記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：International Journal of Architectural Computing  

In architectural and structural design, computational methods have transformed the conceptual phase, allowing the exploration of diverse and efficient solutions. This paper introduces a new framework that integrates shape grammar, genetic algorithms, and clustering techniques to optimize structural designs in the early stages of architectural workflows. Unlike traditional optimization methods that aim for a single optimal solution, this approach generates multiple rational design options, balancing structural performance, aesthetics, and project constraints. Shape grammar effectively manages complex topologies with intuitive inputs, enabling designers to create varied structural forms while understanding the underlying rules and processes. Algorithmically, shape grammar offers significant design variety while maintaining designer control and insight into each configuration’s production. This research focuses on developing a tool for designing 2D trusses and frame systems, with the aim of creating a functional prototype and verifying its performance through a case study. The method uses shape grammar for initial topologies, clustering algorithms to group similar designs, and genetic algorithms to refine and optimize each cluster. This ensures efficient and diverse designs, providing a strong foundation for future developments. The framework’s effectiveness is demonstrated in a case study of a simplified large-scale convention hall, where these computational techniques generate innovative structural layouts. The results show the framework’s ability to produce diverse designs meeting architectural and structural needs, offering advantages over traditional parametric design. This research contributes to architectural and structural design by providing a powerful tool for early design stages, where multiple options are crucial. The framework enhances the creative potential and aligns with the requirements of structural engineering, such as safety and performance. By promoting efficiency, diversity, and adaptability, this approach can transform the way architects and engineers tackle complex design challenges, leading to more innovative building practices.

DOI： 10.1177/14780771251352949

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掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Proceedings from the 14th World Conference on Timber Engineering Advancing Timber for the Future Built Environment Wcte 2025  

This paper present the results of vibration measurement on four Stave Churches in Norway. The study was realized by the joint research team from Norway and Japan. The two countries share important characteristics from the perspective of architecture: the richness in timber resources, technological advancement in timber engineering and the existence of ancient architectural heritage of timber post and beam construction. Four Stave churches in Norway were investigated through multiple monitoring; vibration, temperature, humidity, moisture content measurements and 3D scanning. Fromthese results the application to structural health monitoring on timber architectural heritage is discussed.

DOI： 10.52202/080513-0071

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掲載種別：研究論文（学術雑誌）   出版者・発行元：International Journal of Architectural Computing  

As we strive to improve efficiency and minimise environmental impact in the construction industry, it is important to consider how these objectives impact the work and productivity of designers. This article presents a tool to assist designers in matching reclaimed building products with design intent. The demonstration is based on an actual design project of a two-storey public building made of reclaimed timber from disassembled barns. The algorithm’s objective is to propose optimal matching in terms of a structure’s environmental impact without overloading the user with additional work or excess information. The impact includes emissions embodied in material and related to the transportation from the donor site. The algorithm is integrated into the Grasshopper interface for easier use. All the inputs and objectives are quantitative and fully customisable. The user can still assess qualitative characteristics thanks to a graphical representation of the result. The demonstration shows how automation can simplify the design process with reclaimed elements, support traditional design workflows and enable improvements towards a more sustainable construction industry.

DOI： 10.1177/14780771241234447

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Buildings  

Structural optimization has gained popularity in modern structural design, helping to reduce material consumption while maintaining the structural performance of buildings. This process also significantly influences the architectural appearance, affecting various aspects such as cross-section sizing, structural forms, and the layout of structural members. Beyond minimizing materials or costs, structural optimization can serve as a powerful tool for making architecture more visually appealing. However, with the wide variety of structural optimization methods proposed, gaining a comprehensive overview has become challenging. To address this, a systematic mapping study has been conducted, focusing on methods introduced over the past decade. The relevant journal articles are categorized based on several factors, including types of optimization, materials used, structural typologies, areas of application, and optimization objectives. The results of this study provide both a broad overview of recent developments in structural optimization and valuable insights into research-rich and under-explored areas. Moreover, the paper discusses which types of structural optimization are more relevant when applied as part of the architectural design process. It is suggested that future research should focus on identifying gaps and challenges in effectively applying structural optimization to architectural design, thus enhancing both efficiency and aesthetic potential.

DOI： 10.3390/buildings14113511

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掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：13th World Conference on Timber Engineering Wcte 2023  

The methodology and design methods are often neglected and not discussed as indicators for the popularization of circular design. In this paper, which is part of ongoing research, we propose a design strategy and method for designing a building from reclaimed wooden elements, based on the actual building project case study in Oslo. The design method is a plugin for the Algorithms-Aided Design environment integrated with the database of available reclaimed elements. The plugin is based on algorithms suggesting suitable elements from the database in real-time. This helps the designer in tedious selection processes. Used in the concept and engineering phase of the building process, it can save time and rationalize design choices. The optimization objective is the structural performance and environmental impact of the final structure.

DOI： 10.52202/069179-0474

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