# [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] 点击复制 大跨悬索桥地震响应控制的阻尼器最优布置方法() 分享到： var jiathis_config = { data_track_clickback: true };

39

2009年第2期

315-319

2009-03-20

## 文章信息/Info

Title:
Optimal placement method of dampers for seismic control of long-span suspension bridges

Author(s):
Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China

Keywords:

U448
DOI:
10.3969/j.issn.1001-0505.2009.02.024

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.

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