Techno Press
You logged in as Techno Press

Structural Engineering and Mechanics
  Volume 17, Number 2, February 2004, pages 267-279
DOI: http://dx.doi.org/10.12989/sem.2004.17.2.267
 


Probabilistic determination of initial cable forces of cable-stayed bridges under dead loads
Jin Cheng, Ru-Cheng Xiao and Jian-Jing Jiang

 
Abstract
    This paper presents an improved Monte Carlo simulation for the probabilistic determination of initial cable forces of cable-stayed bridges under dead loads using the response surfaces method. A response surface (i.e. a quadratic response surface without cross-terms) is used to approximate structural response. The use of the response surface eliminates the need to perform a deterministic analysis in each simulation loop. In addition, use of the response surface requires fewer simulation loops than conventional Monte Carlo simulation. Thereby, the computation time is saved significantly. The statistics (e.g. mean value, standard deviation) of the structural response are calculated through conventional Monte Carlo simulation method. By using Monte Carlo simulation, it is possible to use the existing deterministic finite element code without modifying it. Probabilistic analysis of a truss demonstrates the proposed method\' efficiency and accuracy; probabilistic determination of initial cable forces of a cable-stayed bridge under dead loads verifies the method\' applicability.
 
Key Words
    cable-stayed bridges; initial cable forces; probabilistic; parametric uncertainties; response surface; Monte Carlo simulation; statistics.
 
Address
Jin Cheng and Ru-Cheng Xiao
Department of Bridge Engineering, Tongji University, Shanghai, 200092, China

Jian-Jing Jiang
Department of Civil Engineering, Tsinghua University, Beijing, 100084, China
 

Techno-Press: Publishers of international journals and conference proceedings.       Copyright © 2021 Techno Press
P.O. Box 33, Yuseong, Daejeon 305-600 Korea, Tel: +82-42-828-7996, Fax : +82-42-828-7997, Email: info@techno-press.com