Experimental study on seismic behavior of concrete pipe column shelf and minor diameter pipe column BRB shock absorbing shelf

被引：0

作者：

Zhao Z. ^{[1
]}

Gao X. ^{[1
]}

Liu Y. ^{[1
]}

Wang Y. ^{[2
]}

Liu K. ^{[2
]}

Wang Z. ^{[1
]}

Ling L. ^{[1
]}

机构：

[1] Key Laboratory of Earthquake Engineering and Structural Retrofit of Beijing, Beijing University of Technology, Beijing

[2] Power Generation Division, North China Electric Power Design Institute Co., Ltd., Beijing

来源：

Jianzhu Jiegou Xuebao/Journal of Building Structures | 2021年 / 42卷 / 03期

关键词：

Air-cooled condenser support structure; Buckling-restrained brace(BRB); Concrete pipe column; Energy dissipation and seismic reduction; Quasi-static test;

D O I：

10.14006/j.jzjgxb.2019.0095

中图分类号：

学科分类号：

摘要：

In order to solve the problems of weak lateral resistance and inadequate seismic defense of traditional air condenser bracket structures, two air-cooled bent frame specimens were designed and manufactured. One was consisting of two concrete pipe columns with conventional diameter, the other was consisting of two pipe columns with minor diameter and a multi-segment-connected buckling-restrained brace (BRB). The seismic tests of two bent structures under cyclic loading were carried out, and the seismic performance was compared and analyzed, including the cracking state and its development process of pipe columns, horizontal force-lateral displacement hysteresis curves, stiffness degradation, skeleton curves and so on. The characteristics of the axial force and deformation hysteresis curves of the single diagonal BRB and the working mechanism improving the seismic performance were studied. The tests prove that the BRB starts yielding to dissipate seismic energy when the lateral displacement angle is about 1/750, and it does not fail until the angle reaches about 1/30, which increases the structural damping and stablizes the energy dissipation, the earthquake-resistant capability is increased significantly. © 2021, Editorial Office of Journal of Building Structures. All right reserved.

引用

页码：80 / 89

页数：9

共 18 条

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