|Table of Contents|

Research on Control Parameter of Main Cable Shape of Suspension Bridge Based on Reliability Theory(PDF)

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

Issue:
2010年03期
Page:
47-52
Research Field:
Publishing date:
2010-09-20

Info

Title:
Research on Control Parameter of Main Cable Shape of Suspension Bridge Based on Reliability Theory
Author(s):
YAN Xiao-yu1;  SHEN Rui-li1;  TANG Mao-lin1;  CHEN Wei-guo2
1. Department of Bridge Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China; 2. Zhejiang Provincial Construction Headquarters of Zhoushan Islands Link Project, Zhoushan 316000, Zhejiang, China
Keywords:
suspension bridge;  main cable shape;  reliability;  Monte Carlo method
PACS:
U448.25
DOI:
-
Abstract:
The reliability analysis method on the basis of adaptive importance sampling was proposed and the concrete steps of this method were presented. Four suspension bridges including Jiaolongba Bridge, Haicang Bridge, Balinghe Bridge and Xihoumen Bridge, which differed from each other in span, were taken as examples. According to theoretical calculations and actual experimental data, the distributions of span, height difference, sag, steel wire-diameter, elastic modulus and temperature were obtained. Then the mentioned analysis method was used to calculate and analyze the reliability of datum strand and unloaded cable shape, as well as to discuss the parametric sensitivity. The study result shows that, under the current measurement accuracy, the reliability index of construction geometry of datum strand meeting the design geometry decreases as span increases; the reliability index of unloaded cable shape decreases as main cable strand increases. For the datum strand shape, elastic modulus is the most important factor while temperature has the greatest influence on the unloaded cable shape.

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Last Update: 2010-09-20