免震用積層ゴムの水平2方向加力時の限界特性に関する研究

加藤 秀章; 森 隆浩; 室田 伸夫; 鈴木 重信; 嶺脇 重雄; 山本 雅史; 米田 春美; 東野 雅彦

doi:10.3130/aijt.16.167

Structures

AN EXPERIMENTAL AND ANALYTICAL STUDY ON ULTIMATE PROPERTIES OF SEISMIC RUBBER BEARINGS UNDER HORIZONTAL BIAXIAL LOADING

Hideaki KATO, Takahiro MORI, Nobuo MUROTA ^†, Shigenobu SUZUKI ^†, Shigeo MINEWAKI ^†, Masashi YAMAMOTO ^†, Harumi YONEDA ^†, Masahiko HIGASHINO ^†

Author information

Hideaki KATO
Dept. of Seismic Isolation Eng., Bridgestone Co.
Takahiro MORI
Dept. of Seismic Isolation Eng., Bridgestone Co.
Nobuo MUROTA ^†
Dept. of Seismic Isolation Eng., Bridgestone Co.
Shigenobu SUZUKI ^†
Dept. of Seismic Isolation Eng., Bridgestone Co.
Shigeo MINEWAKI ^†
R. & D. Inst., Takenaka Co.
Masashi YAMAMOTO ^†
R. & D. Inst., Takenaka Co.
Harumi YONEDA ^†
R. & D. Inst., Takenaka Co.
Masahiko HIGASHINO ^†
R. & D. Inst., Takenaka Co.
Author contributions

†These authors contributed equally: Nobuo MUROTA, Shigenobu SUZUKI, Shigeo MINEWAKI, Masashi YAMAMOTO, Harumi YONEDA, Masahiko HIGASHINO

Keywords: Seismic isolation, Rubber bearings, Horizontal biaxial loading, Ultimate properties, Finite element method

JOURNAL FREE ACCESS

2010 Volume 16 Issue 32 Pages 167-172

DOI https://doi.org/10.3130/aijt.16.167

Details

Abstract

Ultimate properties of seismic isolation rubber bearings under horizontal biaxial loading are investigated with scaled-model testing.
It was observed that the high-damping rubber bearings was twisted by torque generated by damping factor under biaxial deformation, and showed shear-break in smaller shear strain range than in uniaxial loading.
Additionally, finite element analysis (FEM) was conducted to simulate the twisting deformation and local stress and strain. The results showed good agreement with test results, and indicated the possibility of FEM as an effective tool for prediction of failure strain of isolators in biaxial loading.

Corresponding author

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