Seismic impact response of continuous girder bridge with self-reset seismic reduction and isolation structure at pier bottom

被引：0
|
作者：
Zhang W. [1 ,2 ]
Zhang H. [1 ,2 ]
Chen Y. [1 ,2 ]
Fang R. [1 ,2 ]
Zhao H. [1 ,2 ]
机构：
[1] College of Architecture and Civil Engineering, Beijing University of Technology, Beijing
[2] MOE Key Lab of Urban Security and Disaster Engineering, Beijing University of Technology, Beijing
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2020年 / 39卷 / 17期
关键词：
Continuous girder bridge; Impact; Railway; Seismic reduction and isolation; Self-reset;
D O I：
10.13465/j.cnki.jvs.2020.17.032
中图分类号：
学科分类号：
摘要：
Aiming at problems of only one fixed pier usually being set for continuous girder bridges and aseismic design being difficult to meet actual demands, a new self-reset seismic reduction and isolation structure at pier bottom was proposed. The aseismic effect of the proposed structure at pier bottom was studied with shaking table tests and finite element (FE) simulation. Taking a typical 3-span railway continuous girder bridge as an example, effects of the proposed structure at pier bottom on impact between the main bridge and the approach bridge were studied to analyze effects of site type, pier height and peak seismic acceleration on impact response. Results showed that the proposed structure at pier bottom has good aseismic effect, but it may increase impact response between the main bridge and the approach one; site type and pier height greatly affect its aseismic effect, with site type varying from I to IV and increase in pier height, its overall aseismic effect is more obvious. © 2020, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：245 / 253and260
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