[1]程怡.强震作用下独塔斜拉桥抗震性能分析[J].福建工程学院学报,2018,16(04):320-325.[doi:10.3969/j.issn.1672-4348.2018.04.003]
　CHENG Yi.Seismic performance analysis of single-tower cable-stayed bridge under strong earthquake excitation[J].Journal of FuJian University of Technology,2018,16(04):320-325.[doi:10.3969/j.issn.1672-4348.2018.04.003]
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强震作用下独塔斜拉桥抗震性能分析()
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《福建工程学院学报》[ISSN:2097-3853/CN:35-1351/Z]

卷:
第16卷
期数:
2018年04期
页码:
320-325
栏目:
出版日期:
2018-08-25

文章信息/Info

Title:
Seismic performance analysis of single-tower cable-stayed bridge under strong earthquake excitation
作者:
程怡
阳光学院土木工程学院
Author(s):
CHENG Yi
College of Civil Engineering, Yango University
关键词:
独塔斜拉桥; 地震响应; 有限元分析; 粘滞阻尼器
Keywords:
single-tower cable-stayed bridge;  seismic response;  finite element analysis;  viscous damper
分类号:
U442.5
DOI:
10.3969/j.issn.1672-4348.2018.04.003
文献标志码:
A
摘要:
以某跨径为110 m的独塔异形斜拉桥为工程背景，通过非线性有限元分析对斜拉桥在强震作用下的地震响应特性及减震措施进行了研究，得出如下结论：相比Lander-amboy波，卓越周期与桥梁固有周期较为接近的Cerro Prieto波能够引起结构较大的地震响应。行波效应能够显著增大工程背景斜拉桥的地震响应，且随着视波速的增大，桥梁的加速度响应明显增大。阻尼系数25 000 kN·s/m为工程背景斜拉桥的最优粘滞阻尼器设计参数，且在塔梁连接处安装该参数粘滞阻尼器后，斜拉桥减震效果显著，尤其能明显减小结构的位移响应。
Abstract:
A single-tower cable-stayed bridge with a span of 110m was selected as the sample of the required engineering background. Based on the finite element analysis, the seismic response characteristics and damping measures of cable-stayed bridges were studied. Results show that compared with the Lander-amboy wave, the Cerro Prieto wave with its predominant period similar to that of the bridge’s natural period, can cause a larger seismic response of the structure. The travelling wave effect can significantly increase the seismic response of the cable-stayed bridge, and the acceleration response of the bridge increased when the apparent wave velocity was increased. The optimum viscous damper design parameter for the cable-stayed bridge is 25 0000 kN·s/m. Installing viscous dampers designed with such parameters at the connection points of the tower’s beams produced remarkable damping effects for the bridge, with the displacement responses of the structure reduced most obviously.

参考文献/References:

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更新日期/Last Update: 2018-08-25