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This study aims to clarify the seismic behavior of traditional Japanese architecture, particularly focusing on the role of brackets in these structures.

June 3, 2026Journal of the Visualization Society of Japan0 citationsOpen Access

Sustainability of Japanese Traditional Architecture Viewed Through Visualization of Seismic Behavior

YTYuya Takaiwa

Key Points

This study aims to clarify the seismic behavior of traditional Japanese architecture, particularly focusing on the role of brackets in these structures.
Dynamic loading tests were conducted on an ancient architectural bracket (斗栱)
Motion capture technology was utilized to visualize the bracket's behavior under dynamic loading
Results from the ancient bracket were compared with those of a newly constructed bracket made from the same specifications and materials.
The ancient bracket exhibited comparable seismic characteristics to a newly constructed one after approximately 150 years.
It was suggested that the bracket's design, primarily relying on friction resistance, minimizes the impact of wood aging.

Abstract

我が国の古建築に多く見られる斗栱は，柱頭と丸桁の間に設置されるブラケットの役割を果たす部材であり，その地震時挙動は明らかになっていない．そこで，古建築の地震時挙動を明らかにすることを目的として斗栱の動的加力試験をおこなった．動的加力試験において，変位計で挙動を把握することは，変位計同士の接触など配置的な問題から困難である．そこで，本実験ではモーションキャプチャを用いて斗栱の挙動を可視化した．併せて，同仕様・同寸法のヒノキで新築した斗栱を用いた動的加力実験の結果と比較をおこなうことで，古建築の持つサステナビリティについて考察をおこなった．実験の結果，斗栱は，約150年の年月を経ても新築した斗栱と同等の特性を有することが確認された．斗栱は，主たる成分が摩擦抵抗となるディテールとすることで，木材の経年変化の影響を受けにくくしていることが推察された．

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Yuya Takaiwa (2025) studied this question.

synapsesocial.com/papers/6a1fc3a6dee9eb8c0dce5268 https://doi.org/10.3154/jvs.45.173_2

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June 3, 2026Journal of the Visualization Society of Japan0 citationsOpen Access

Sustainability of Japanese Traditional Architecture Viewed Through Visualization of Seismic Behavior

YTYuya Takaiwa

Key Points

This study aims to clarify the seismic behavior of traditional Japanese architecture, particularly focusing on the role of brackets in these structures.
Dynamic loading tests were conducted on an ancient architectural bracket (斗栱)
Motion capture technology was utilized to visualize the bracket's behavior under dynamic loading
Results from the ancient bracket were compared with those of a newly constructed bracket made from the same specifications and materials.
The ancient bracket exhibited comparable seismic characteristics to a newly constructed one after approximately 150 years.
It was suggested that the bracket's design, primarily relying on friction resistance, minimizes the impact of wood aging.

Abstract

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Cite This Study

Yuya Takaiwa (2025) studied this question.

synapsesocial.com/papers/6a1fc3a6dee9eb8c0dce5268 https://doi.org/10.3154/jvs.45.173_2

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