Development of the hysteresis chacteristics model for the wooden shear wall combining a brace and structural plywood and application to wooden houses cluster model

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K15133
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 23010:Building structures and materials-related
• Research Institution: Yamagata University
• Principal Investigator: SHIOMITSU MASASHI 山形大学, 工学部, 助教 (30830129)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 木質構造 / 耐力壁 / 併用壁 / 筋かい / 構造用合板 / 復元力特性モデル

Outline of Final Research Achievements

The main objective of this study was to verify the hysteresis characteristics of a wall with a combination of a brace and structural plywood , which is commonly used as a shear wall in wooden buildings, and to develop a hysteresis characteristic model that can reproduce such a wall, and we conducted static tests of combination walls. Specifically, the performance of specimens pulled in one direction and pulled in the positive direction after being subjected to arbitrary negative deformation were compared to verify the effect of deformation on one side on the performance of the opposite side. The results showed that deformation exceeding 1/30 rad, the structural plywood was damaged at deformation on one side , loosening the buckling restraint of the brace and affecting the performance of the opposite side, and deformation exceeding 1/20 rad, the performance of the structural plywood was clearly degraded.

Free Research Field

木質構造

Academic Significance and Societal Importance of the Research Achievements

本研究では、木造建物の耐力壁として一般的な筋かいと構造用合板を併用した壁の復元力特性を検証した。その結果、併用壁を用いて作成された木造建物が、地震時にどのような性能を有するか、そして、地震時の挙動をするかを明らかにすることができた。よって本結果は、今後併用壁を用いた建物を耐震設計をする上で、重要な知見になると言える。