Shaking Table Test of Earthquake-damaged Recycled Aggregate Concrete Frame Retrofitted with Steel Dampers

被引：0
|
作者：
Lü X. [1 ,2 ]
Zhu Q. [1 ,2 ]
机构：
[1] College of Civil Engineering, Tongji University, Shanghai
[2] State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai
来源：
Tongji Daxue Xuebao/Journal of Tongji University | 2019年 / 47卷 / 07期
关键词：
Earthquake-damaged; Recycled aggregate concrete frame; Retrofitting for seismic response reduction; Shaking table test; Steel damper;
D O I：
10.11908/j.issn.0253-374x.2019.07.003
中图分类号：
学科分类号：
摘要：
An earthquake-damaged eight-storey recycled aggregate concrete frame model was retrofitted by using epoxy injection and steel energy dissipation devices,then shaking table test was conducted to investigate earthquake response of the retrofitted frame and damping effect of the steel dampers. Based on the test results, damage observation, dynamic characteristic, acceleration and displacement response of the test model were analyzed, furthermore, stiffening and damping effects contributed by the steel dampers to the primary frame were discussed. The test results indicate that inter-storey stiffness degradation can be reduced by hysteretic damping effect of the steel dampers, and acceleration response can be effectively controlled under strong earthquake excitations. Yielding sequence of the steel dampers along the floors starts from the middle floor towards the upper and lower floors. Deformations of the steel dampers installed at the middle floors increase greatly, dissipating a large amount of input seismic energy. © 2019, Editorial Department of Journal of Tongji University. All right reserved.
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页码：914 / 924
页数：10
相关论文
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