Effect of viscous dampers on seismic response of rocking double-column bents under near-field ground motions with strong pulses

被引：0

作者：

Zhou, Yulong ^{[1
]}

Zhang, Jinquan ^{[1
]}

Han, Qiang ^{[2
]}

Cheng, Shoushan ^{[1
]}

He, Haifang ^{[1
]}

机构：

[1] Research Institute of Highway Ministry of Transport, Beijing,100088, China

[2] Key Laboratory of Urban Security and Disaster Engineering of the Ministry of Education, Beijing University of Technology, Beijing,100124, China

来源：

Tumu Gongcheng Xuebao/China Civil Engineering Journal | 2020年 / 53卷

关键词：

Seismic response;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

To investigate the effect of viscous dampers on the seismic response of rocking double-column bents, the case study, parametric analysis and overturning analysis were performed on the rocking double-column bents with viscous dampers based on the assumption of rigid bodies and the Lagrange equation.It can be concluded that the viscous dampers can decrease the displacement response of rocking double-column bents under earthquakes.Moreover, as a damper based on velocity, the benefit on the near-field ground motions with pulses is more significant than that on the far-field ground motions.The increase of the dimensionless damping (λ) and the decrease of the damping exponent (nv) can reduce displacement response of rocking double-column bents subjected to the near-field ground motions with pulses.However, the peak displacement response of rocking bents has no significant change when the failure displacement of dampers is greater than 120 mm.The viscous dampers can improve the overturning resistant capacity of rocking double-column bents subjected to the near-field ground motions with pulses, and the overturning resistant capacity increases with the increase of λ and the decrease of nv. © 2020, Editorial Office of China Civil Engineering Journal. All right reserved.

引用

页码：288 / 293