[1]李爱群,王浩.大跨悬索桥地震响应控制的阻尼器最优布置方法[J].东南大学学报(自然科学版),2009,39(2):315-319.[doi:10.3969/j.issn.1001-0505.2009.02.024]
 Li Aiqun,Wang Hao.Optimal placement method of dampers for seismic control of long-span suspension bridges[J].Journal of Southeast University (Natural Science Edition),2009,39(2):315-319.[doi:10.3969/j.issn.1001-0505.2009.02.024]
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大跨悬索桥地震响应控制的阻尼器最优布置方法()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第2期
页码:
315-319
栏目:
交通运输工程
出版日期:
2009-03-20

文章信息/Info

Title:
Optimal placement method of dampers for seismic control of long-span suspension bridges
作者:
李爱群 王浩
东南大学混凝土及预应力混凝土结构教育部重点实验室,南京 210096
Author(s):
Li Aiqun Wang Hao
Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
大跨悬索桥 地震位移控制 阻尼器 最优布置 一阶优化 评估函数
Keywords:
suspension bridge seismic control damper optimal placement first order optimization assessment function
分类号:
U448
DOI:
10.3969/j.issn.1001-0505.2009.02.024
摘要:
从地震位移控制的原理出发,根据大跨悬索桥结构地震响应的特点,建立了其地震位移控制效果的3种评估函数,提出了一种基于罚函数和一阶优化原理的阻尼器最优布置方法.以主跨1 490 m的润扬悬索桥为研究对象,基于ANSYS建立了该桥的空间有限元计算模型,采用Combin14单元对阻尼器进行模拟,用以研究大跨悬索桥地震位移控制的阻尼器空间最优布置,并给出了该桥在给定地震输入下阻尼器的最优布置.研究结果表明,对于大跨悬索桥而言,只要阻尼器数目及参数选取合理,按合理方式设置均能有效地控制结构的地震位移响应及减小大多数关键截面的地震力,但采用不同控制效果评估函数得到的阻尼器最优布置方案略有差别.
Abstract:
After introducing the mechanism of seismic displacement control with dampers, 3 kinds of assessment functions for seismic response control effect are formulated based on the seismic response characteristics of long-span suspension bridges and a new optimal placement method of dampers using penalty function and first order optimization theory is proposed. Runyang suspension bridge(RSB), with a main span of 1 490 m, is the longest bridge in China. As an example, a spatial finite element(FE)model for RSB is established with program ANSYS, and the Combin14 element is adopted to simulate the damper. On the basis of which seismic response analyses using different placement of dampers are carried out with the optimal placement method, and the optimal placements of dampers with the three assessment functions are then achieved, respectively. The three optimal control effects are analyzed and compared. Results show that different assessment functions can lead to different optimal placements when the number of dampers is determined, but any placement of dampers can reduce the seismic displacement significantly on condition that the parameters and the number of dampers are proper.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 李爱群(1962—),男,博士,教授,博士生导师,aiqunli@seu.edu.cn.
基金项目: 国家高技术研究发展计划(863 计划)资助项目(2006AA04Z416)、国家自然科学基金重点资助项目(50538020).
引文格式: 李爱群,王浩.大跨悬索桥地震响应控制的阻尼器最优布置方法[J].东南大学学报:自然科学版,2009,39(2):315-319.
更新日期/Last Update: 2009-03-20