|Table of Contents|

Influences of Central Buckles on Dynamic Behaviors of Triple-tower Suspension Bridge(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2009年04期
Page:
49-53
Research Field:
Publishing date:
2009-12-20

Info

Title:
Influences of Central Buckles on Dynamic Behaviors of Triple-tower Suspension Bridge
Author(s):
ZOU Ke-guan;  WANG Hao;  LIANG Shu-ting
Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast University, Nanjing 210096, Jiangsu, China
Keywords:
central buckle;  triple-tower suspension bridge;  dynamic behavior;  natural vibration characteristic;  vibration mode
PACS:
U448.25
DOI:
-
Abstract:
A 3-D finite element calculation model was established for Taizhou Yangtze River Bridge based on ANSYS software, and the subspace iteration method was adopted to analyze the natural vibration characteristics of the bridge, meanwhile, the influences of settings of central buckles at the mid-span of the main spans between the main cables and the main girder on the dynamic behaviors of a long-span triple-tower suspension bridge were studied. The results show that settings of central buckles have great influence on the first vertical bending vibration mode and have tremendous influence on some other vertical bending modes. Furthermore, central buckles postpone the appearance of the first torsion vibration mode as well as modes mainly consist of main cable vibration. Setting of central buckles increases frequencies of lateral bending vibration modes, and it has greater influence on those vibration modes with an antisymmetric shape in each single span than those with a symmetric shape in each single span. The research results provide a necessary information and research foundation for wind-resistant and anti-seismic research of the bridge.

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Last Update: 2009-12-20