|Table of Contents|

Sensitivity Parameters Analysis of PC Oblique-pulling Truss Bridge(PDF)

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

Issue:
2007年01期
Page:
59-63
Research Field:
Publishing date:
2007-03-20

Info

Title:
Sensitivity Parameters Analysis of PC Oblique-pulling Truss Bridge
Author(s):
HUANG Ping-ming;  WANG Da;  ZHANG Yong-jian
Key Laboratory for Bridge and Tunnel of Shaanxi Province, Chang'an University, Xi'an 710064, Shaanxi, China
Keywords:
bridge engineering;  finite element;  sensitivity parameter;  shrinkage and creep;  nonlinearity;  static characteristic
PACS:
TU448.224
DOI:
-
Abstract:
In order to accurately grasp variation situations of inner force and deflection for PC cable-stayed bridge during construction and running stage and study the mechanical characteristics of this type bridge, a PC oblique-pulling truss bridge was taken as the studying case. A three-dimensionalspace finite element model was built with the large-scale finite element calculation program. The related researches were carried on the structure by computer simulation analysis method. The influence rules and levels of the bridge static characteristics were obtained, which were affected by the sensitivity parameters, such as shrinkage and creep of concrete, changing of the temperature, nonlinearity and so on. The results indicate that shrinkage and creep of concrete, nonlinear and rigidity deviation have a less affection on inner force of bridge, while they have a greater affection on deflection of structure, and changes of deflection value linearity decrease from middle span to two side spans. But temperature and self-weights deviation have a smaller affection on deflection and inner force than the other sensitivity parameters and changes of deflection of them are taken as parabolic distribution from middle span to two side spans, while changes of inner force don't have much variation on the whole bridge.

References:

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Last Update: 2007-03-20