Study on Lateral Load Resisting Mechanism of Reinforced Concrete Shear-dominant Walls Subjected to Bi-directional Loading

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420550
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Building structures/Materials
• Research Institution: Building Research Institute (2015-2016); Kyoto University (2014)
• Principal Investigator: Sakashita Masanobu 国立研究開発法人建築研究所, 構造研究グループ, 主任研究員 (50456802)
• Research Collaborator: TANI Masanori ; IDOSAKO Yuki
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 耐震壁 / RC造 / 水平二方向載荷 / せん断破壊 / 面外方向載荷

Outline of Final Research Achievements

Shear walls deform not only in in-plane direction but also in out-of-plane direction by earthquake ground motions. Little experimental data of structural wall failing in shear are available on the influence of out-of-plane deformation on in-plane seismic resistance. The objective of this study is to investigate the influence of out-of-plane deformation on in-plane shear resistance of wall failing in shear. From experimental study on three 1/3-scale reinforced concrete shear wall specimens, it is clarified that the maximum lateral loads of the specimens subjected to bi-directional loading were approximately 8-18% less than that of the specimen subjected to uni-directional loading. Based on the experimental results, an estimation method for shear capacity of shear walls under bi-directional loading was proposed. In addition, three-dimensional finite element model was constructed for simulating experimental behavior of the shear wall specimens.

Free Research Field

耐震設計