| 基于粘滞阻尼器的元江大桥减震设计方案 |
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| 引用本文： | 郑久建,刘晓丰,申现龙,雷大根.基于粘滞阻尼器的元江大桥减震设计方案[J].世界地震工程,2018,34(3):169-178. |
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| 作者姓名： | 郑久建 刘晓丰 申现龙 雷大根 |
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| 作者单位： | 1. 燕山大学 建筑工程与力学学院, 河北 秦皇岛 066004;2. 杭州市市政工程集团有限公司, 浙江 杭州 310006 |
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| 摘 要： | 为了提高大跨度桥梁的抗震性能水平，基于粘滞阻尼器的结构减震控制技术成为专家学者研究的重点和工程设计人员首先考虑的抗震设防措施。现有成果主要集中在大跨度公路斜拉桥的研究和应用，在山区的非规则高墩钢桁连续梁桥研究的较少。以云南省元江大桥为例，采用Midas/civil建立弹性分析的有限元模型，对元江大桥进行了动力特性分析。采用快速非线性时程分析方法对粘滞阻尼器参数进行了优化分析，并且总结了粘滞阻尼器参数对高墩连续梁桥的减震作用规律。最后，通过有控和无控结构的地震动响应对比分析，评价了安装阻尼器后的结构主控部位的减震效果。结果表明:减震控制提高了结构的安全性。
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| 关 键 词： | 铁路连续梁桥 粘滞阻尼器 减震设计 阻尼器参数优化 |
Damping design scheme of Yuanjiang bridge based on viscous damper |
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| ZHENG Jiujian,LIU Xiaofeng,SHEN Xianlong,LEI Dagen.Damping design scheme of Yuanjiang bridge based on viscous damper[J].World Information On Earthquake Engineering,2018,34(3):169-178. |
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| Authors: | ZHENG Jiujian LIU Xiaofeng SHEN Xianlong LEI Dagen |
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| Institution: | 1. School of Civil Engineering and MechanicsYanshan University, Qinhuangdao 066004, China;2. Hangzhou Municipal Engineering Group Co., Ltd, Hangzhou 310006, China |
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| Abstract: | In order to improve the seismic performance of long-span bridges, the structural damping control technology based on the viscous dampers has become both the focus researched by experts and scholars and the seismic fortification measures considered firstly by the engineering designers. The existing references mainly focus on the research and application of long-span cable-stayed bridges, and there are fewer researches on irregular high pier steel truss continuous girder bridges in the mountains.In this paper,taking the Yuanjiang bridge in Yunnan Province as an example,the finite element model forelastic analysis was established by Midas/civil, and the dynamic characteristics of the bridge were analyzed. The parameters of the viscous dampers wereoptimized by the fast nonlinear time history analysis method, and the damping effect of the viscous damper parameters on the high pier continuous girder bridge was summarized. Finally,was compared and analyzed, the damping effect of the main control part of the structure after installing the damper wasevaluated by comparing and analyzing the seismic response ofcontrolled and uncontrolled structures.The results shows that the dampingcontrol improves the safety of the structure. |
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| Keywords: | railway continuous beam bridge viscous dampers damping design dampers parameter optimization |
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