Comparative study on the effectivness of seismic displacement control of long-span triple-tower suspension bridge

被引：0

作者：

Zheng W. ^{[1
]}

Wang H. ^{[1
]}

Zhang Y. ^{[1
]}

Zou Z. ^{[1
]}

Wang C. ^{[1
]}

机构：

[1] Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education, Southeast University, Nanjing

来源：

Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2019年 / 40卷 / 02期

关键词：

Elastic cable; Long-span triple-tower suspension bridge; Mild steel damper; Seismic displacement control; Traveling wave effect; Viscoelastic damper;

D O I：

10.11990/jheu.201709018

中图分类号：

学科分类号：

摘要：

Seismic displacement at the end of the main girder of a bridge subjected to strong ground motion may exceed the allowed level. Thus, adding suitable seismic reduction devices between the tower and the main girder is necessary to control the relative displacement of both parts involved. Considering the effect of traveling wave velocity on the seismic response of a long-span suspension bridge, this study investigates the optimum parameters of elastic cables, viscoelastic dampers, and mild steel dampers to control the seismic response of Taizhou Bridge, a long-span triple-tower suspension bridge with main span of 2 m×1 080 m. Their seismic reduction performance was compared. Results show that the relative displacement between the main girder and the tower can be effectively controlled with an elastic cable and mild steel damper than with a viscoelastic damper, whereas the relative displacement can be controlled using a viscoelastic damper without greatly increasing the inner force at the bottom of the towers. © 2019, Editorial Department of Journal of HEU. All right reserved.

引用

页码：279 / 284

页数：5

共 18 条

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