| 玉井 宏樹（たまい ひろき） | データ更新日：2024.04.23 |
准教授 ／
工学研究院
社会基盤部門
建設材料工学
| 1. | 玉井宏樹, Erdenechuluun Munkhbayar, Souphavanh SENESAVATH, 園田佳巨, PCM-CFグリッド工法により補強したRC梁の耐衝撃性に関する基礎検討, Proceedings of the 14th Symposium on Impact Problems in Civil Engineering, 論文番号(3), 2024.02. |
| 2. | 上野 貴行, 玉井 宏樹, 安川 華乃子, 池田 博嗣, 阿部 陵, 井手 健太, 繰り返し載荷を受けるPCaPC電柱の破壊過程の把握と建替評価に関する一提案, 構造工学論文集, https://doi.org/10.11532/structcivil.70A.807, Vol.70A，pp.807-818, 2024.03. |
| 3. | 下河 初美, 櫨原 弘貴, Dhruva Narayana Katpady, 山田 悠二, 玉井 宏樹, 小池 賢太郎, 管理者直営補修の実践に向けた技能講習会の取組とその成果, 土木構造・材料論文集, 39, 151-159, 2023.12. |
| 4. | 安川 華乃子, 玉井 宏樹, 上野 貴行, 池田 博嗣, 井手 健太, 実物大実験によるPC電柱の曲げ耐荷特性の把握とその再現解析, 土木構造・材料論文集, 39, 45-53, 2023.12. |
| 5. | Souphavanh Senesavath, Hiroki Tamai, Chi Lu, Yoshimi Sonoda, Strengthening of RC Beams with CFC Panels for Improving Impact Resistance, Applied Sciences, https://doi.org/10.3390/app131910625, 13, 19, 論文番号10625, 2023.10. |
| 6. | 上野貴行, 池田博嗣, 玉井宏樹, 井手健太, 繰り返し載荷を行ったコン柱の物性値の変化とスペクトルの変化に着目した建替評価に関する実験的検討, コンクリート工学年次論文集, 45巻，2号，pp. 991-996，2023, 2023.07. |
| 7. | 玉井 宏樹, 德永 和也, 園田 佳巨, 中立軸位置に緊張材を配したプレテンションPC梁の単発および繰り返し衝撃荷重下の動的挙動に関する実験的研究, 構造工学論文集, https://doi.org/10.11532/structcivil.69A.1048, Vol.69A，pp.1048-1057, 2023.03. |
| 8. | 玉井 宏樹，木下 義昭，伊方 寛睦, 劣化損傷を有する供用中の小規模特殊橋を対象とした実橋載荷試験, 土木構造・材料論文集, 38, 106-114, 2022.12. |
| 9. | 青島 亘佐, 玉井 宏樹, 野間 康隆, 樋口 祐治, 府川 和樹, 山口 雄也, 山田 洋輔, 吉元 大介, 江口 康平, 大島 義信, 視線情報による橋梁健全性診断の暗黙知抽出に関する検討, AI・データサイエンス論文集, https://doi.org/10.11532/jsceiii.3.J2_650, 2022 年 3 巻 J2 号 p. 650-660, 2022.11. |
| 10. | 徳永和也, 梶原淳史, 玉井 宏樹, 園田佳巨, 単発衝撃荷重が作用するプレテンションPC 梁の耐荷性状に関する実験的研究, コンクリート工学年次論文集, 44巻，2号，pp. 949-954，2022, 2022.07. |
| 11. | Yoshimi Sonoda, Hiroki Tamai, Tatsuya Ifuku, Masami Koshiishi, Reinforcing effect of polyurea resin coating on RC members subject to low-speed and medium-speed impact, Advances in Structural Engineering, https://doi.org/10.1177/13694332221088945, Volume: 25 issue: 7, page(s): 1609-1621, 2023.05. |
| 12. | 西村 拓真，玉井 宏樹，園田 佳巨, 骨材の吸水膨張がコンクリートのひび割れ性状に及ぼす影響に関する一考察, 土木構造・材料論文集, 37, 153-161, 2021.12. |
| 13. | 玉井 宏樹，古賀 智史，園田 佳巨, 付着性能ならびに動的加振が断面修復部の剥落危険性に及ぼす影響, 土木構造・材料論文集, 37, 139-146, 2021.12. |
| 14. | Yoshimi Sonoda, Hiroki Tamai, Hirotsugu Ikeda, Seismic Performance of Dam Piers Retrofitted with Reinforced Polymer Cement Mortar, Applied Sciences, https://doi.org/10.3390/app11167255, Volume 11, Issue 16, 7255, 2021.08. |
| 15. | 木下 義昭, 佐川 康貴, 玉井 宏樹, 松永 昭吾, 災害発生時の初動対応に既存のICTを用いた地方公共団体の業務効率化, 土木学会論文集F5（土木技術者実践）, https://doi.org/10.2208/jscejppce.77.1_112, 77, 1, 112-129, 77巻、1号、pp.112-129, 2021.07. |
| 16. | Tadaaki Nozawa, Yuki Kobayashi, Yoshimi Sonoda, Hiroki Tamai, A basic study on characteristics of RC beam using ESCON, Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations, 10.1201/9780429279119-166, pp.1225-1231, 2021.04. |
| 17. | 原 紘一朗, 園田 佳巨, 野澤 忠明, 玉井 宏樹, 超高強度合成繊維補強コンクリートを用いたRC梁の疲労耐荷性に関する研究, 構造工学論文集, https://doi.org/10.11532/structcivil.67A.619, Vol.67A，pp.619-627, 2021.03. |
| 18. | 玉井 宏樹，畠中 玲，園田 佳巨，櫨原 弘貴, 局所的に生じた鉄筋腐食が扁平 RC 梁のかぶりの剥離・剥落に及ぼす影響, 土木構造・材料論文集, 36, 53-63, 2020.12. |
| 19. | Hiroki Tamai, Chi Lu, Yoichi Yuki, New Design Concept for Bridge Restrainers with Rubber Cushion Considering Dynamic Action: A Preliminary Study, Applied Sciences, https://doi.org/10.3390/app10196847, Volume 10, Issue 19, 6847, 2020.09, [URL]. |
| 20. | Hiroki Tamai, Yoshimi Sonoda, John E. Bolander, Impact resistance of RC beams with reinforcement corrosion: Experimental observations, Construction and Building Materials, 10.1016/j.conbuildmat.2020.120638, 263, 2020.12, [URL], Reinforcing steel corrosion is a serious problem that may negatively impact the safety and serviceability of reinforced concrete (RC) structures. To properly maintain and manage RC structures with corroded reinforcement, it is necessary to clarify the relationship between the degree of deterioration and the remaining load capacity. Most previous studies have focused on evaluating the load-bearing capacity of RC beams with corroded reinforcement subjected to quasi-static loads. In contrast, there are relatively few studies on the behavior of corroded RC beams subjected to impact loads, as might occur during natural disasters. In this study, RC beam specimens with varying degrees of reinforcement corrosion are subjected to quasi-static and falling-weight impact load tests. Electrolytical means are employed to induce corrosion. The test results are used to evaluate: 1) the impact resistance of RC beams deteriorated by reinforcement corrosion, including the effects of repetitive impact; and 2) the differing effects of corrosion on static load-carrying performance and impact resistance. The results indicate that, for corrosion degrees higher than 10%, the impact resistance is significantly reduced and the failure mode becomes more brittle. The brittleness can be attributed to, at least in part, interactions between flexural cracking caused by the loading and preexisting damage associated with the corrosion process. Furthermore, the results reveal that reinforcement corrosion has a greater influence on impact resistance than on quasi-static load capacity.. |
| 21. | Hagere Alemayehu Gibe, Hiroki Tamai, Yoshimi Sonoda, Numerical Study on Failure Process and Ultimate State of Steel Bearing Under Combined Load, Heliyon, https://doi.org/10.1016/j.heliyon.2020.e03764, 6, 4, Heliyon 6 (2020) e03764, 2020.04. |
| 22. | Hiroki Tamai, Sota Jinkawa, Yoshimi Snoda, Damage evaluation and protection method of resin pipe for gas conduit subjected to impact load, International Journal of Protective Structures, https://doi.org/10.1177/2041419620902791, Volume 11, Issue 4, page 423-447, 2020.12. |
| 23. | 中山歩，玉井宏樹，園田佳巨，神川創太, 材種の異なるガス用樹脂管の耐衝撃性能に関する研究, 第12回構造物の衝撃問題に関するシンポジウム論文集, 2019.12. |
| 24. | 曾健恒，園田佳巨，玉井宏樹, CFパネル補強したRC 梁の耐衝撃性能に関する数値研究, 第12回構造物の衝撃問題に関するシンポジウム論文集, 2019.12. |
| 25. | 大塚柚人,櫨原弘貴,玉井宏樹,小池賢太郎,添田政司, 表面含浸工法の適用が電気化学的手法による鉄筋の状態評価に与える影響, コンクリート構造物の補修，補強アップブレード論文報告集, Vol.19, pp.361-366, 2019.10. |
| 26. | Yamazaki Kazuki, Yoshimi Sonoda, Hiroki Tamai, Hiroyuki Yamada, Masahiro Haruguchi, Analytical Study on Dynamic Behavior of Reinforced Dam Pier under Seismic Load, Modern Developments in Performance of Structures under Extreme Loading ~Proceedings of PROTECT 2019~, 944-955, ISBN 978-0-88865-341-3, 2019.09. |
| 27. | Hiroki Tamai, Yoshimi Sonoda, A Study on Impact Resistance Performance of RC Member Deteriorated by Reinforcement Corrosion, Modern Developments in Performance of Structures under Extreme Loading ~Proceedings of PROTECT 2019~, 352-363, ISBN 978-0-88865-341-3, 2019.09. |
| 28. | Hiroki Tamai, Sota Jinkawa, Yoshimi Sonoda, Ayumi Nakayama, A Comparative Study on Impact Resistance of Plastic Gas Pipes with Different Materials, Modern Developments in Performance of Structures under Extreme Loading ~Proceedings of PROTECT 2019~, 364-374, ISBN 978-0-88865-341-3, 2019.09. |
| 29. | Lu Chi, Hiroki Tamai, Yoshimi Sonoda, An Evaluation Method for the Impact Load Carrying Capacity of RC Beam Members under the Influence of ASR, Modern Developments in Performance of Structures under Extreme Loading ~Proceedings of PROTECT 2019~, 277-287, ISBN 978-0-88865-341-3, 2019.09. |
| 30. | 山崎航希, 玉井宏樹, 園田佳巨, 鉄筋とポリマーセメントモルタルにより補強された扁平状RC 梁の曲げ耐荷性状に関する研究, コンクリート工学年次論文集, 第41巻, 第2号, 1267-1272, 2019.07. |
| 31. | 曾健恒, 玉井宏樹, 園田佳巨, 小尾 博俊, NUMERICAL STUDY ON FAILURE BEHAVIOR OF RC BEAM RETROFITTED BY CFC PANEL UNDER IMPACT LOAD, コンクリート工学年次論文集, 第41巻, 第2号, 703-708, 2019.07. |
| 32. | 玉井 宏樹, 朝隈 竜也, 櫨原 弘貴, コンクリート構造物の補修業務に関する課題の抽出とその分析, 土木構造・材料論文集, 第34号, 121-128, 2018.12. |
| 33. | Hiroki Tamai, Yoshimi Sonoda, Impact resistant capacity and failure behaviour of RC slab with corroded reinforcement, Proceedings of the 5th International Conference on Protective Structures, 551-556, ISBN: 978-83-89333-71-1 (e-version), 2018.08. |
| 34. | Yoshimi Sonoda, Kazuki Fukunaga, Hiroki Tamai , Impact resistance performance assessment of wire ring net guard fence using full scale test and numerical analysis, Proceedings of the 5th International Conference on Protective Structures, 502-505, ISBN: 978-83-89333-71-1 (e-version), 2018.08. |
| 35. | 小尾 博俊, 玉井宏樹, 園田佳巨, 鉄筋腐食による劣化後に連続繊維複合パネルで補強したRC版の耐衝撃性に関する基礎的検討, コンクリート工学年次論文集, 第40巻, 第2号, 721-726, 2018.06. |
| 36. | Hiroki Tamai, Chi Lu, Yoshimi Sonoda, An Experimental Study on the Impact Resistance of RC Members with Reinforcement Corrosion, Proceedings of 6th Annual International Conference on Architecture and Civil Engineering, 10.5176/2301-394X_ACE18.128, 336-340, 2018.05. |
| 37. | Yoshimi Sonoda, Mari Okamura, Hiroki Tamai, A Fundamental Study on Hammering Sound Test of Deteriorated Concrete Structures, Proceedings of 6th Annual International Conference on Architecture and Civil Engineering, 10.5176/2301-394X_ACE18.118, 89-94, 2018.05. |
| 38. | 玉井 宏樹, 吉武 翔, 園田 佳巨, 中島 健一郎, 中山 歩, ガス用ポリエチレン管の耐衝撃性能およびその防護材の効果に関する実験的研究, 構造工学論文集, 64A, 847-854, 2018.03. |
| 39. | Hamidun Mohd Noh, Yoshimi Sonoda, Hiroki Tamai, Isao Kuwahara, An analysis of chemical-mechanical damage in reinforced concrete beam, International Journal of Integrated Engineering, 10, 4, 156-164, 2018.01, Nowadays, a major issue in the field of construction is the deterioration of reinforced concrete structures due to chemical and mechanical attacks. This deterioration directly impacts construction safety and serviceability, as well as the cost of maintenance. For the purpose of maintaining safety and serviceability, it is necessary to evaluate the durability of existing structures accurately, in order to predict the structure's deterioration and its future strength. In this study, an experiment was conducted in which the electrolytic process was carried out for several levels of corrosion. Next, a static loading test was adopted to assess the structural performance and obtain the ultimate strength of the beam. In addition, continuum damage mechanics were utilized in the analysis of damage caused by chemical and mechanical effects. Within the framework of this method, chemical damage caused by the corrosion of steel bars was considered. Then the coupling effects of chemical and mechanical damage were calculated by introducing two independent scalar damage variables into the constitutive equation. To calculate the chemical damage evolution, we carried out a diffusion process of chloride ions that impact the corrosion of steel bars in concrete, and an evaluation was conducted on an affected cross-sectional area of a steel bar. The proposed method was found to validate the experiment's results and could predict the ultimate strength under various exposure conditions. Moreover, the proposed orthotropic conditions may be carried out as an alternative to isotropic analysis in order to identify the worst-case scenario of the structure.. |
| 40. | Chi Lu, Hiroki Tamai, Yoshimi Sonoda, A Numerical Study on the Impact Resistant Capacity of RC Beams with Corroded Reinforcement, Procedia Engineering, https://doi.org/10.1016/j.proeng.2017.11.086, 341-348, Volume 210, 2017, Pages 341-348, 2017.12, To evaluate the remaining service life and determine the appropriate timing and method for repair and reinforcement for the reinforced concrete (RC) structures, it is important to quantitatively evaluate the residual load capacity of RC structures deteriorated by rebar corrosion due to chloride attack or neutralization. There have been many studies on the load capacity during static loadings. However, for disaster-prone areas, the evaluation of the residual load should be conducted also against the dynamic and impact loads. In this study, to clarify the impact resistance of the RC beam members with rebar corrosion, a falling weight impact experiment is conducted on the RC beam specimen with accelerated deterioration. Based on the experimental results, the relationship between the degree of deterioration and impact resistance is clarified. To numerically simulate the rebar corrosion by FEM, FE modelling of RC beam with corroded rebar is proposed focusing on the following 3 factors related to the mass loss ratio of the rebar: the reduction of the cross-sectional area of the reinforcement is reproduced by adjusting the parameters of the rebar material; an interface element is defined to describe the reduction of the bond strength; the cracks are generated by subjecting expansion pressure to the concrete. Uneven corrosion model is introduced to simulate the actual corrosion result. By comparing the analytical result with the experimental result, it can be found that the experimental result is accurately reproduced.. |
| 41. | Hiroki Tamai, Yoshimi Sonoda, A Study on Impact Resistant Capacity of RC Slab with Corroded Reinforcement and its retrofitting method, Proceedings of 6th International Conference on Design and Analysis of Protective Structures, 559-564, 2017.11, The reinforcement corrosion of RC structures due to chloride attack or neutralization is a serious problem to shorten the service life of them. In order to properly maintain and manage the RC structure with corroded reinforcement, it is necessary to clarify the relationship between the degree of deterioration and the remaining loading capacity. However the existing studies mainly focused on the evaluation of the load bearing capacity of RC beams subjected to static load, and there are few studies on the impact loads involved in natural disasters. Considering the fact that the large-scale natural disasters happened more frequently in recent years, it is important to quantitatively evaluate the impact behavior and resistance of the RC structures with corroded reinforcement for disaster-prone countries like Japan. In this study, to clarify the impact resistance of the RC slabs with corroded reinforcement under medium velocity impact by a rigid projectile, a horizontal impact test was conducted on the RC slab specimen with corroded reinforcement made by electrolytic corrosion method. In a series of impact tests, an air-acceleration type horizontal impact test machine like a launcher was used, and a flat nose projectile of a mass of 3kg and a RC slab with 600 mm x 600 mm in length and width, 80 mm in depth were used. Impact velocity was set to 15m/s. Through the impact tests, the difference of impact response and fracture pattern between the RC slabs without and with corroded reinforcement was clarified as a fundamental information. The relationship between the degree of corrosion and impact resistance of the slabs was also clarified. In addition, we tried to clarify the impact resistance improvement effect of RC slab retrofitted by continuous fiber composite panel (CFC panel) which has already been applied to repair and reinforcement such as renewal of tunnel lining and seismic reinforcement of pillar parts.. |
| 42. | 玉井宏樹, 桑原功旺, 園田佳巨, 鉄筋腐食による劣化を想定したRC梁の耐荷性能および耐衝撃性能に及ぼす各要因の影響評価, コンクリート工学年次論文集, 第39巻, 第2号, 553-558, 2017.06, 鉄筋腐食により劣化したRC梁部材に生じる，鉄筋の断面積減少，鉄筋とコンクリート間の付着性能の低下，かぶりコンクリートの剥落といった損傷が部材の耐荷性能に及ぼす影響を定量的に把握することを目的に，各損傷を個々に理想的に再現した供試体を用いて静的載荷試験および落錘式衝撃試験を実施した。その結果，鉄筋の断面積減少が耐荷力や耐衝撃性能に大きな影響を及ぼし，また，付着性能は破壊性状に大きく影響を及ぼすことが明らかとなった。さらに，実験結果を分散分析することで，それらの影響度合いを定量化した。. |
| 43. | Yang Sun, Hiroki Tamai, Yoshimi Sonoda and Hirotoshi Obi, Experimental study on impact resistance of corroded rc beams reinforced by CFC plate, Proceedings of the 12th International Conference on Shock & Impact Loads on Structures, 978-981-11-2850-9, 409-418, 2017.06, In recent years, as the aging of existing reinforced concrete (RC) structures is progressing, research on reinforcement and repair methods has become a concern. However, most of these researches mainly focus on the study of static behaviour for RC structures. Therefore, it is necessary to clarify the decrement of the impact resistance of the protective structure that is expected to be subjected to impact loads due to deterioration damage. It is important to provide an appropriate repairing and reinforcing method. From these backgrounds, in this research, we first attempted to corrode the rebar by electrolytic corrosion and to do the drop weight impact test to clarify the decrement of the impact resistance of the RC beam due to deterioration. Furthermore, by doing the same test, we tried to clarify the impact improvement effect of RC beam reinforced by continuous fiber composite panel (CFC panel) which has already been applied to repair and reinforcement such as renewal of tunnel lining and seismic reinforcement of pillar parts. As a result, we could get some findings. Firstly, reinforcement with CFC panel can greatly improve the impact resistance of the RC beam by reinforcing the bottom surface or three surfaces of the RC beam, and it was confirmed that this tendency does not depend on the deterioration degree before reinforcement. Second, although the upper surface reinforcement does not exert much effects on the deformation of the RC beam, it was found that it is effective for preventing the compressive failure of the collision surface.. |
| 44. | 玉井 宏樹, 桑原 功旺, 園田 佳巨, 鉄筋腐食により劣化したRC梁部材の曲げ耐荷性能および耐衝撃性能に関する基礎的研究, 構造工学論文集, 63A, 1224-1236, 2017.03. |
| 45. | 玉井 宏樹, 桑原 功旺, 園田 佳巨, 鉄筋の腐食程度が腐食膨張圧やひび割れ発生に及ぼす影響に関する一考察, 土木構造・材料論文集, 第32号, 135-142, 2016.12, 本研究では中央に腐食鉄筋を有するモルタル円柱供試体の割裂引張試験とその再現解析を組み合わせた手法により鉄筋の腐食程度と膨張圧関係を推定することを試みた。具体的には図-1 に示すように、まず、後述する電食法を用いて鉄筋の腐食率（質量減少率）を変えた円柱供試体を作製し、割裂引張試験を実施することで腐食率と最大荷重の関係を算出した。続いて、解析においては有限要素法を用いて腐食生成物による体積膨張を鉄筋部の熱膨張として再現したモデルに対し、割裂引張試験の再現解析を行い、膨張圧と最大荷重の関係を算出した。実験と解析により得られた2 つの関係から最大荷重をパラメータとして、腐食率と膨張圧関係の推定を試みた。また、得られた腐食率と膨張圧の関係を用いて表面ひび割れ発生時の腐食率についても検討した。. |
| 46. | Chi Lu, HIROKI TAMAI, YOSHIMI SONODA, A STUDY ON IMPACT COMPRESSIVE PROPERTIES OF CUSHION RUBBER FOR CABLE BRIDGE RESTRAINERS, 4th International Conference on Protective Structures, 476-485, 2016.10. |
| 47. | Yoichi Yuki, HIROKI TAMAI, Hironori Ishii, YOSHIMI SONODA, Toshihiro Kasugai, Weight-drop tests of bridge restrainers under large weights, 11th German Japanese Bridge Symposium, 2016.08. |
| 48. | HIROKI TAMAI, ISAO KUWAHARA, YOSHIMI SONODA, A STUDY ON THE EFFECT OF CORROSION RATE OF REINFORCING STEEL ON ITS EXPANSION PRESSURE AND LOAD BEARING CAPACITY OF RC BEAM, 41st Conference on OUR WORLD IN CONCRETE & STRUCTURES, 275-284, 2016.08. |
| 49. | 結城 洋一, 玉井 宏樹, ケーブル式落橋防止構造における緩衝材の動的応答評価に向けた解析的研究, 鋼構造論文集, 第23巻, 第90号, 105-115, 2016.06. |
| 50. | ISAO KUWAHARA, HIROKI TAMAI, YOSHIMI SONODA, Experimental Study on Impact Load Resistance of RC Beam with Corroded Reinforcement, MATEC Web of Conferences, 47, 02004-p1-02004-p7, 2016.04. |
| 51. | 土屋 羊平, 園田 佳巨, 玉井 宏樹, 嶋 丈示, 鋼製透過型砂防堰堤の耐荷性能に関する基礎的研究, 構造工学論文集, 62A, 1019-1030, 2016.03. |
| 52. | 結城 洋一, 玉井 宏樹, 石井 博典, 園田 佳巨, 春日井 敏博, 大型落錘実験による落橋防止構造に作用する最大荷重の推定, 構造工学論文集, 62A, 341-350, 2016.03. |
| 53. | Hariyadi, HIROKI TAMAI, Enhancing the performance of porous concrete by utilizing the pumice aggregate, Elsevier: Procedia Engineering, 125, 732-738, 2015.11. |
| 54. | HIROKI TAMAI, ISAO KUWAHARA, YOSHIMI SONODA, An experimental study on static and impact load resistance of RC beam with corroded reinforcement, Proceedings of 40th Conference on OUR WORLD IN CONCRETE & STRUCTURES, 467-474, 2015.08. |
| 55. | HIROKI TAMAI, YOSHIMI SONODA, Evaluation of cumulative damage of RC members under repeated impact loading, Applied Mechanics and Materials, 784, 500-507, 2015.07. |
| 56. | HIROKI TAMAI, YOICHI YUKI, YOSHIMI SONODA, TOSHIHIRO KASUGAI, A study on shock absorbing properties of rubber pieces for bridge seismic restrainers, Proceedings of the Fifth International Workshop on Performance, Protection & Strengthening of Structures Under Extreme Loading (PROTECT 2015), 27-35, 2015.06. |
| 57. | Kozo Onoue, HIROKI TAMAI, Hendro Suseno, Shock-absorbing capability of lightweight concrete utilizing volcanic pumice aggregate, Elsevier: Construction and Building Materials, 83, 261-274, 2015.05. |
| 58. | HIROKI TAMAI, LU CHI, YOSHIMI SONODA, FUNDAMENTAL STUDY ON EVALUATION OF IMPACT LOAD OF COLLAPSED SOIL BY EXTENDED DISTINCT ELEMENT METHOD, Proceedings of 11th International Conference on Shock & Impact Loads on Structures, 27-35, 2015.05. |
| 59. | 結城 洋一, 玉井 宏樹, 宇野 まり子, 園田 佳巨, 春日井 敏博, 形状や拘束条件に着目した緩衝ゴムの緩衝特性に関する基礎実験, 構造工学論文集, 61A, 313-321, 2015.03, 落橋防止構造に用いる緩衝ゴムの汎用的な設計を行うためには，緩衝材の任意の形状，硬度，拘束条件を考慮する必要があると考えられるが，このような点に着目した研究は見当たらない．そこで，本研究では緩衝ゴムを設計するにあたり有用となり得る基礎的なデータを収集する目的で，直方体の緩衝ゴムを対象とし，供試体の形状（厚さや受圧面積），硬度，拘束条件（側面の拘束や載荷面へのプレストレス），ならびに重錘の衝突速度を変えた落錘実験を実施した．そして，緩衝ゴムの緩衝特性と各パラメータとの関連性を調査し分析を行った．. |
| 60. | YOSHIMI SONODA, HIROKI TAMAI, Damage evaluation of the existing PC bridge by vehicle collision using numerical analysis, Proceedings of the 3rd International Conference on Protective Structures ICPS3, 550-560, 2015.02. |
| 61. | 宗本 理, 園田 佳巨, 池邉 将光, 玉井 宏樹, 数値解析によるゴム製防舷材の耐荷性能評価に関する基礎的検討, 土木構造・材料論文集, 第30号, 113-119, 2014.12, 船舷および岸壁の損傷を防ぐ緩衝材である防舷材は，船舶の接岸エネルギーを吸収し，その際に生じる反力を緩和できる（定反力ゾーン）ように設計されるが，近年船舶の大型化が進み，防舷材の信頼性設計が今後重要になることが予想される．防舷材の信頼性設計を行うためには，実規模レベルの試験データが必要となるが，容易に実験できない場合が多い．そのため，防舷材の特徴である定反力ゾーンを含む耐荷性能を適切かつ定量的に評価可能な数値解析手法を確立することが必要不可欠である．そこで，本研究では数値解析によるゴム製防舷材の定量的評価に向けた解析的検討を実施した．具体的には， FE解析によるV型防舷材の圧縮載荷シミュレーションを行い，防舷材の耐荷性能を適切に評価するための留意すべき点について考察した．. |
| 62. | 玉井 宏樹, 園田 佳巨, 大塚 久哲, 原田 孝志, 鵜野 禎史, FE 解析による鋼製支承のコンパクト化に関する一考察, 土木構造・材料論文集, 第30号, 63-71, 2014.12, 鋼製支承の現行設計法では、鉛直反力（上揚力も含む）および水平力を設計荷重として、はり理論に基づく簡便な計算方法に基づいて設計されている。しかし、近年実績の多いタイプB支承であるBP･B支承はその構成要素が多いため、載荷時に複雑な応力状態を呈することが容易に推察され、現行設計法で仮定した応力状態と実際の応力状態は異なっている可能性がある。そこで、本研究では、橋梁の新設及び耐震補強の支承交換に適用できるコンパクトな鋼製支承を開発することを最終的な目的として、まずは、より詳細なモデル化を施したFEMによる接触解析を実施し、BP･B支承の載荷時の応力状態を詳細に把握した。さらに、FE解析によって出力された応力値と設計値との比較から、構成要素の断面減少などのコンパクト化の可能性について検討したところ、下沓の高さを削減することが可能であることを確認した。. |
| 63. | 結城 洋一, 玉井 宏樹, 宇野 まり子, 園田 佳巨, 春日井 敏博, 拘束条件が緩衝ゴムの衝撃力低減効果に及ぼす影響に関する実験的考察, 第11回構造物の衝撃問題に関するシンポジウム論文集, 論文No.(28), 2014.10. |
| 64. | 宗本 理, 園田 佳巨, 池邊将光, 西本安志, 玉井 宏樹, 動的荷重を受けるゴム製防舷材の耐荷特性に関する基礎的検討, 第11回構造物の衝撃問題に関するシンポジウム論文集, No.(30), 2014.10. |
| 65. | 玉井 宏樹, 路 馳, 園田 佳巨, 別府 万寿博, 崩壊土砂の衝撃力評価に向けたDEM解析の適用に関する基礎的研究, 第11回構造物の衝撃問題に関するシンポジウム論文集, 論文No.（21）, 2014.10. |
| 66. | Shinobu Sano, HIROKI TAMAI, Yoshihiko Murata, YOSHIMI SONODA, Numerical study on a thermal crack control effect of concrete structures using delayed-setting mortar, Proceedings of 39th conference on Our World in Concrete & Structures, XXXⅢ, 425-434, 2014.08. |
| 67. | 村田 慶彦, 佐野 忍, 玉井 宏樹, 園田 佳巨, 凝結遅延モルタルの敷設状態が温度応力低減効果に及ぼす影響に関する一検討, 日本コンクリート工学会年次論文集, 36, 2, 1453-1458, 2014.07, スラブ状の既設部材の上に壁状の部材を打ち継ぐ構造物においては壁部材に温度応力に起因したひび割れが生じる可能性が高く，材料的な観点から様々な抑制対策が提案されている。本研究では，凝結遅延剤を添加して凝結時間を数日から数週間に大幅に遅延したモルタルを打継ぎ面に敷設し，拘束応力を低減する方法について実構造物において実証実験を行い，有用性を検証した。また，実構造物をモデルとした温度応力解析を行うとともに，適切な敷設条件に関する検討を行った。その結果，凝結遅延モルタルを打継ぎ面に一定の厚さで全面に敷設することにより，拘束応力を低減できることを確認した。. |
| 68. | HIROKI TAMAI, Mariko Uno, Yoichi Yuki, YOSHIMI SONODA, Toshihiro Kasugai, A Study on the Effectiveness of Energy Absorbing Rubber in Pin-Fixed Cable Restrainer of a Bridge, International Journal of Protective Structures, 5, 2, 219-237, 2014.06, The Japanese specifications for highway bridges require unseating prevention devices to be installed on bridges as necessary. Recently, a new type of cable restrainer was developed where the assembly allows the cable to rotate without restriction on the brackets’ mounting angle. Cylindrical rubber pieces are inserted around pins to absorb impact forces. However, no standard design method has been established for the shock absorbers so far. This paper presents the impact-resisting characteristics of a pin-fixed cable device; design indications for shock absorbers were acquired based on the results of impact tests on bracket models of actual restrainers. The results showed that the pin-fixed restrainers had sufficient impact resistance for all tested sizes and that the maximum impact load showed consistent trends. Finite element analysis was also performed on the device assuming hyper-elastic bodies for rubber pieces. The numerical results sufficiently represented the impact response trend obtained from the experimental results.. |
| 69. | Yoichi Yuki, HIROKI TAMAI, Naoki Wada, YOSHIMI SONODA, Toshihiro Kasugai, A Fundamental Study on the Shock Cushioning Characteristics of a Novel pin-Fixed Aseismatic Connector for Bridges, Applied Mechanics and Materials, 566, 637-642, 2014.06, This paper presents a novel pin-fixed aseismatic connector for bridges. A feature of this device is that the anchorage areas of both ends are connected with hinges; thus, there are no restrictions with respect to their mounting angles. Additionally, the PC cable of this device is given an appropriate amount of sag; thus, within the range of the sag the structure is capable of absorbing the amount of displacement because of temperature changes and live loads. In addition, this device has a certain shock-cushioning effect because of the rubber material surrounding the hinge pins. However, there is no quantitative evaluation method on the shock-cushioning effect of this device. Therefore, in this study, the shock-cushioning effect of the novel pin-fixed aseismatic connector for bridges is investigated using impact load tests and numerical analysis. It is found that the shock-cushioning effect of this device is almost equal to similar aseismatic connectors. Furthermore, it is also confirmed that their effects can be quantitatively evaluated using impact response analysis.. |
| 70. | 結城 洋一, 玉井 宏樹, 宇野 まり子, 園田 佳巨, 春日井 敏博, サイズの異なるピン定着型ケーブル式落橋防止装置の緩衝特性に関する実験的考察, 構造工学論文集, 60A, 360-371, 2014.03, 落橋防止構造には衝撃的な地震荷重の緩和機能を持たせることが道路橋示方書により規定されている．しかし，緩衝材の性能の評価法や諸元の決定方法が確立されておらず，現状として緩衝材の選定は設計者の判断に任せられている．著者らは，落橋防止構造に付加される緩衝材の動的設計法を提案することを最終目的とし，その基礎段階として，近年新たに開発されたピン定着型ケーブル式落橋防止構造（ピン定着型落防）を対象に落錘式衝撃実験を実施し，それらの衝撃緩衝性能を明らかにしてきた1）．一方，落橋防止装置は橋梁規模に応じて様々なサイズが存在するが，異なるサイズにおける衝撃緩衝性能に関しては明らかではない。そこで，本研究ではサイズの異なるピン定着型落防を対象とした衝撃実験を実施，その耐衝撃挙動や緩衝ゴムの衝撃緩衝効果を把握することを試みた。さらに，FEMによる動的解析を行い数値解析による再現性の検証を試みた．. |
| 71. | 玉井 宏樹, 櫨原 弘貴, 園田 佳巨, 鋼板補強コンクリート部材の点検診断技術への非破壊検査法の適用に関する基礎的研究, 土木構造・材料論文集, 第29号, 51-58, 2013.12, 鋼板補強RC部材に代表されるような異種材料で覆われたコンクリート内部や接着界面の点検診断技術は確立されていないのが現状である。そこで、本研究では、打音法と赤外線法に着目した鋼板補強RC構造物の点検技術確立を最終目標とし、その基礎的段階として、鋼板を接着したコンクリート供試体を製作し、鋼板厚さや欠陥種別をパラメータとすることで、２つの手法により得られる音圧波形や表面加速度波形や温度分布を分析することで、欠陥の有無や欠陥の種類を判別可能な特徴量の抽出を試みた。さらに、供試体実験を再現した過渡応答解析を実施することで、打音法の適用限界を明らかにした。. |
| 72. | Mariko Uno, HIROKI TAMAI, Yoichi Yuki, YOSHIMI SONODA, Toshihiro Kasugai, A study on the impact resistance of pin fixed cable restrainers for bridges, Proceedings of 10th International conference on Shock and Impact Loads on Structures, 471-480, 2013.11, The Japanese Specification for Highway Bridges requires the installation of unseating prevention device on bridges identified as necessary. Recently, a new type of cable restrainer was developed, whose assembly allows the cable to rotate and creates no restriction to their brackets’ mounting angle. Cylindrical rubbers are inserted around pins to absorb impact forces. However, no standard design method of the shock absorber has been established yet. This paper presents the study of the impact resisting characteristics of the pin-fixed cable device with a goal of developing the appropriate design method of the shock absorbing rubbers by conducting impact load tests on bracket models of the actual restrainers. As a result, it was observed that pin fixed restrainer has sufficient impact resistance and that there are some trends with maximum impact load. We have also conducted FE analyses on the device assuming the hyper-elastic behaviour of three-parameter Mooney-Rivlin model. The analyses could nearly demonstrate the impact response trend obtained from the conducted experiments.. |
| 73. | HIROKI TAMAI, Seongbong Cheon, Satoshi Goya, YOSHIMI SONODA, Case study of damage of PC bridge by vehicle collision and its numerical analysis, Proceedings of 10th International conference on Shock and Impact Loads on Structures, 451-460, 2013.11, Accidental collisions occur frequently between bridge superstructures and over-height vehicles passing under the bridges. In order to keep the damaged bridge in a serviceable state, it is important to conduct quantitative evaluation of its damage level and residual performance. In this study, we performed FE simulation of an actual collision accident between PC girder and container truck, and confirmed that the simulation reproduced the condition of damage from the actual incident such as cracks and deformation. In addition, we conducted the collision analyses assuming various collision cases and also static vertical loading analyses of PC girder received collision. The analyses elucidate the effect of collision speed, collision angle, gross vehicle weight on the damage of PC girder. Based on results of each analysis, the correlation of damage and residual performance is assessed.. |
| 74. | YOICHI YUKI, HIROKI TAMAI, NAOKI WADA, YOSHIMI SONODA, TOSHIHIRO KASUGAI, A fundamental study on the shock cushioning characteristic of a new pin fixed aseismatic connector for bridges, Proceedings of the 8th International Symposium on Impact Engineering, 2013.08. |
| 75. | HIROKI TAMAI, YOSHIMI SONODA, A fundamental study on the impact resistance of damaged RC slab under single and repeated low-velocity impact, Proceedings of 4th International Workshop on Performance, Protection, and Strengthening of Structures under Extreme Loading-PROTECT2013, 2013.08. |
| 76. | 合屋 智史, 玉井 宏樹, 園田 佳巨, 大型車両の衝突を受けたPC桁の損傷度評価に関する解析的考察, コンクリート工学年次論文集, 35, 2, 709-714, 2013.07. |
| 77. | 玉井 宏樹, 合屋智史, 園田 佳巨, 単発及び繰り返し衝突が作用する二辺単純支持RC版の応答特性に関する基礎的研究, 土木構造・材料論文集, 第28号, 47-53, 2012.12. |
| 78. | Satoshi Gouya, HIROKI TAMAI, YOSHIMI SONODA, A Fundamental Study on the Repeated Impact Analysis of RC Slab with Consideration of Local Damage, Proceedings of 5th International Conference on Protection of Structures against Hazards, 2012.11. |
| 79. | NAOKI WADA, HIROKI TAMAI, YOSHIMI SONODA, SATORU MUNEMOTO, Experimental Study on Dynamic Response Characteristic of the Bridge Restrainer Plate System with Shock Absorber Device, Proceedings of 9th German-Japanese Bridge Symposium, 2012.09. |
| 80. | 玉井 宏樹, 園田 佳巨, A Numerical Study on Impact Damage Assessment and Dynamic Behaviour of Concrete Bridges by Pounding Effect, International Journal of Protective Structures, 10.1260/2041-4196.3.2.147, Volume 3, Number 2, 147-160, 2012.06. |
| 81. | 玉井宏樹，和田直樹，園田佳巨，宗本理, 衝撃緩衝機能を有する落橋防止連結板装置に関する実験的考察, 構造工学論文集, Vol.58A（2012.3），pp.1010-1020, 2012.03. |
| 82. | Hiroki Tamai, Yoshimi Sonoda, Yuichirou Kawabata, Makoto Shinozaki, A numerical approach for damage evaluation of RC slab under single and repeated impact loading, 9th International Conference on Shock and Impact Loads on Structures Proceedings of the 9th International Conference on Shock and Impact Loads on Structures, 643-651, 2011.12, Dynamic behavior of RC beam under single impact loading has been studied by many researchers in recent years. However some RC protective structures such as RC caisson breakwater wall are subjected to not only single impact but also repeated impact loading in in-service period. So, it is important to clarify the damage condition of RC member under repeated impact loading. We have studied cumulative damage of RC beam under repeated impact loading by using numerical technique. In that previous study, to evaluate the damage condition and residual performance of RC beam under repeated impact loading, we have proposed the evaluation method of residual performance based on cumulative damage models. As a result, it is found that the cumulative damage and residual displacement of RC beam could be properly evaluated by using our proposed method. Although our proposed method has been verified for RC beam under repeated impact loading, the validity and accuracy for RC slab have not been thoroughly studied. The main objective of this study is to quantitatively evaluate the dynamic behavior, the impact failure mechanism and the residual performance of RC slab subjected to repeated impact loading. From the viewpoint of the impact-resisting design of RC caisson breakwater wall covered with wave-dissipating blocks, at first, structural behavior and damage distribution of the RC slabs subjected to repeated impact loads were investigated through falling weight impact loading tests. Second, numerical approaches for damage evaluation of RC slab under single and repeated impact loading (low velocity impact) were conducted by using proposed method.. |
| 83. | Hiroki Tamai and Yoshimi Sonoda, A numerical approach for damage evaluation of RC slab under single and repeated impact loading, Proceedings of 9th International conference on Shock and Impact Loads on Structures, pp.643-652, 2011.11. |
| 84. | 宗本理，玉井宏樹, RCはりの耐衝撃性能評価に向けた各解析手法の留意点に関する一考察, 土木構造・材料論文集, 第27号、pp42-52, 2011.11. |
| 85. | Hiroki Tamai, Yoshimi Sonoda, Numerical studies on cumulative damage of RC members under repeated impact loading, 3rd International Workshop on Performance, Protection and Strengthening of Structures under Extreme Loading, PROTECT2011 Performance, Protection and Strengthening of Structures under Extreme Loading, 10.4028/www.scientific.net/AMM.82.320, 320-325, 2011.08, [URL], We have tried to develop the simple FE analysis method based on continuum damage mechanics to quantitatively evaluate the impact behaviour and the cumulative damage of RC beam under repeated impact loading. As a result, it has been found that the cumulative damage and residual displacement of RC beam under repeated impact load can be properly evaluated, but the crack propagation cannot be evaluated by using the proposed method. This paper presents the following matters: (1) Numerical investigation on the impact behaviour and cumulative damage of RC beam under repeated impact loading by using the proposed method. (2) Numerical investigation of the relationship between cumulative kinetic energy of repeated impact loading and cumulative damage of RC members. (3) Investigation on improved points of our existing proposed method to evaluate the crack path of RC member under repeated impact.. |
| 86. | 中山慎也，玉井宏樹，坂田力, コンクリートの欠陥状態が判別可能な打音特徴量関数の提案に向けた基礎的研究, コンクリート工学年次論文集, Vol.33，No.1，1811-1816, 2011.07. |
| 87. | 玉井宏樹，篠崎誠, 衝撃荷重を受ける曲げ破壊型RC はりの全体応答に影響を及ぼす解析要因の把握に関する研究, コンクリート工学年次論文集, Vol.33，No.1，1811-1816, 2011.07. |
| 88. | 玉井宏樹，篠崎誠, 繰返し衝突が作用するRC部材の累積損傷に関する一考察, 第１０回構造物の衝撃問題に関するシンポジウム論文集, 133-136, 2010.12. |
| 89. | 篠崎誠，玉井宏樹, 衝撃荷重を受けるRCはりの全体応答に影響を及ぼす解析要因の把握に関する研究, 第１０回構造物の衝撃問題に関するシンポジウム論文集, 1-6, 2010.12. |
| 90. | H.TAMAI,Y.SONODA, A Numerical study on impact damage assessment and dynamic behavior of concrete bridges by pounding effect, Proceedings of ISIE2010, 2010.08. |
| 91. | 深澤仁，園田佳巨，玉井宏樹, SPH法を用いた衝撃解析の離散化程度および解析精度に関する基礎的研究, 土木学会構造工学論文集, Vol.56A，1169-1176, 2010.03. |
| 92. | H.TAMAI,Y.SONODA, A Numerical Study on the Dynamic Behaviour of Concrete Bridges by Pounding Effect, Proceedings of 8th International Conference on SHOCK & IMPACT LOADS ON STRUCTURES, 2009.12. |
| 93. | 玉井宏樹，園田佳巨, 繰返し衝撃荷重を受けるRC部材の残存性能評価法の実現象への適用, 土木学会構造工学論文集, Vol.55A，1366-1375, 2009.03. |
| 94. | H.TAMAI,Y.SONODA, A Numerical Study on Evaluation of Residual Performance of RC Beam under Repeated Impact Load, Proceedings of 2nd International Workshop on Performance, Protection, and Strengthening of Structures under Extreme Loading-PROTECT2009, 2009.08. |
| 95. | 吉田佳太郎，梶田幸秀，大塚久哲，玉井宏樹, 桁-橋台衝突のモデル化の違いが橋梁全体系の地震応答解析結果に与える影響の検討, 第12 回地震時保有耐力法に基づく橋梁等構造の耐震設計に関するシンポジウム講演論文集, 2009.01. |
| 96. | 玉井宏樹，森田将旗，坂田力，梶田幸秀，吉田佳太郎, 大地震時に起こる橋桁と橋台の衝突現象に関する一考察, 第９回構造物の衝撃問題に関するシンポジウム論文集, 135-138, 2008.12. |
| 97. | 玉井宏樹，園田佳巨，坂田力, 繰返し衝突が作用するRC部材の残存性能評価に関する研究, 第９回構造物の衝撃問題に関するシンポジウム論文集, 101-104, 2008.12. |
| 98. | Hiroki Tamai, Yoshimi Sonoda, A numerical study on evaluation of residual strength of rc member under repeated impact load, Doboku Gakkai Ronbunshuu A, 10.2208/jsceja.64.915, 64, 4, 915-925, 2008.12, [URL], To evaluate the impact behavior and the residual strength of RC protective structure under repeated impact load is essential for building of performance based design method of protective structure.In this study, damage condition of RC beam under single impact load was clarified by using Lemaitre's damage model, which can evaluate stiffness degradation of damaged materials for unloading/reloading. Further, a new cumulative damage model was proposed. By using the model, the residual strength and allowable impact condition were evaluated based on cumulative damage level of RC beam under repeated impact load.. |
| 99. | 玉井宏樹，園田佳巨, 繰返し衝突荷重を受けるRC部材の残存性能評価に関する解析的研究, 土木学会論文集Ａ, Vol.64 No.4，915-925, 2008.11. |
| 100. | 下薗征史，園田佳巨，玉井宏樹，西本安志, 積層繊維補強ゴム緩衝材の衝撃破壊特性に関する解析的考察, 土木学会構造工学論文集, Vol.52A, 1201-1208, 2006.03. |
| 101. | 玉井宏樹，片岡宗太，園田佳巨，関野勇, 更生工法により補修されたマンホールの耐震性能に関する解析的研究, コンクリート工学年次論文集, Vol.28，No.2，1585-1590, 2006.07. |
| 102. | 別府万寿博，園田佳巨，玉井宏樹, 粒子法によるコンクリートおよびＲＣはりの非線形解析に関する基礎的研究, コンクリート工学年次論文集, Vol.28，No.2，55-60, 2006.07. |
| 103. | H.TAMAI,Y.SONODA,T.HAMAMOTO, A Numerical Study on The Damage Evaluation of Abutment by Pounding Effect, Proceedings of International conference on BRIDGE ENGINEERING –Challenges in the 21st Century, 2006.11. |
| 104. | 後藤恵一，玉井宏樹，園田佳巨，梶田幸秀，濱本朋久, 地震時における橋梁の桁端衝突解析に関する基礎的研究, 第８回構造物の衝撃問題に関するシンポジウム論文集, 115-120, 2006.11. |
| 105. | 玉井宏樹，園田佳巨, 損傷モデルを用いたＲＣはりの衝撃応答解析に関する研究, 第８回構造物の衝撃問題に関するシンポジウム論文集, 25-30, 2006.11. |
| 106. | 下薗征史，園田佳巨，玉井宏樹，西本安志, 積層繊維補強ゴム緩衝材の衝撃応答解析, 第８回構造物の衝撃問題に関するシンポジウム論文集, 19-24, 2006.11. |
| 107. | 玉井宏樹，園田佳巨，後藤恵一，梶田幸秀，濱本朋久, 桁端衝突による橋台の損傷度評価および衝突ばね特性に関する基礎的研究, 土木学会構造工学論文集, Vol.53A，1219-1226, 2007.03. |
| 108. | H.TAMAI,Y.SONODA,K.GOTOU,Y. KAJITA, A Numerical Study on Impact Damage Assessment of PC Box Girder Bridge by Pounding Effect, Proceedings of First International Workshop on Performance, Protection, and Strengthening of Structures under Extreme Loading-PROTECT2007, 2007.08. |
| 109. | 玉井宏樹，園田佳巨, 損傷モデルを用いたＲＣはりの衝撃応答解析手法に関する検討, 土木学会論文集Ａ, Vol.63 No.3，411-422, 2007.09. |
| 110. | Hiroki Tamai, Yoshimi Sonoda, A study on impact response analysis of RC beam using damage model, Doboku Gakkai Ronbunshuu A, 10.2208/jsceja.63.411, 63, 3, 411-422, 2007.12, [URL], The impact responses of steel and reinforced concrete (RC) beams were previously analyzed. It was found that the decrease in the stiffness of concrete is a key feature to analyse RC beam. Consequently, introducing the damage model, analytical solutions are improved, and the applicability is demonstrated. Further, a new model is developed, estimating the residual impact resistance. Thus, the impact response of RC beam under cyclic loading is clarified.. |
| 111. | 西本安志，玉井宏樹，園田佳巨，別府万寿博，彦坂煕, 積層繊維補強ゴムの衝撃緩衝効果に関する解析的考察, 第７回構造物の衝撃問題に関するシンポジウム論文集, 107-112, 2004.11. |
| 112. | 中村博史，玉井宏樹，園田佳巨，別府万寿博, 粒子法を用いた鉄筋コンクリートはりの衝撃応答解析, 第７回構造物の衝撃問題に関するシンポジウム論文, 71-76, 2004.11. |
| 113. | 玉井宏樹，園田佳巨, 衝撃応答解析への損傷力学の適用に関する研究, 第７回構造物の衝撃問題に関するシンポジウム論文集, 59-64, 2004.11. |
| 114. | 西本安志，玉井宏樹，園田佳巨，別府万寿博，彦坂煕, 積層繊維補強ゴムを用いた緩衝材の衝撃挙動に関する解析的考察, 土木学会構造工学論文集, Vol.51A, 1625-1634, 2005.03. |
| 115. | 園田佳巨，玉井宏樹, 損傷力学の概念を適用した衝撃応答解析手法に関する基礎的研究, 土木学会構造工学論文集, Vol.51A, 1687-1694, 2005.03. |
| 116. | H.TAMAI, Y.SONODA, A fundamental study on the impact response analysis of RC beam using damage mechanics, Proceedings of 6th Asia-Pacific Conference on SHOCK & IMPACT LOADS ON STRUCTURES, 2005.12. |
| 117. | M.BEPPU,Y.SONODA,H.TAMAI, Dynamic Behavior of Beam Member under Impulsive Load using Particle Method, Proceedings of 6th Asia-Pacific Conference on SHOCK & IMPACT LOADS ON STRUCTURES, 2005.12. |
| 118. | Y.SONODA,H.TAMAI,T.KATO,H.OHSUMI, A Study On The Impact Resistance Of Steel Frame Dam By Discrete Element Method, Proceedings of 6th Asia-Pacific Conference on SHOCK & IMPACT LOADS ON STRUCTURES, 2005.12. |
| 119. | 別府万寿博，園田佳巨，玉井宏樹, 粒子法による鋼およびＲＣはりの弾塑性衝撃応答解析に関する基礎的研究, 土木学会構造工学論文集, Vol.52A, 1179-1188, 2006.03. |
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