|Table of Contents|

Optimization Analysis of Cable Tensions of Dead Load State for Cable-stayed Bridge with Steel Box Girder(PDF)

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

Issue:
2007年02期
Page:
19-23
Research Field:
Publishing date:
2007-06-20

Info

Title:
Optimization Analysis of Cable Tensions of Dead Load State for Cable-stayed Bridge with Steel Box Girder
Author(s):
ZHOU Xu-hong1; 2;  DAI Peng1;  DI Jin1
1. School of Highway, Chang’an University, Xi’an 710064, Shaanxi, China; 2. School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, Gansu, China
Keywords:
bridge engineering;  cable-stayed bridge with steel box girder;  optimization of cable tension;  shape of dead load state;  finite element analysis
PACS:
U448.28
DOI:
-
Abstract:
Based on optimization theory, a mathematical model for constrained optimization of cable tensions was established. Based on spatial finite element model of cable-stayed bridge, the shape of dead load state was the objective function in this method. Unconstrained conjugate gradient optimization algorithms were applied. Through means such as modifying the minor objective function to constraint conditions, authors solved the optimization calculation of cable tensions of dead load state. The method was applied to optimization calculation of cable tensions of Hongdao Waterway Bridge which is a single pylon cable-stayed bridge with steel box girder and two cable planes. The difference and practicability of some methods about adjustment of cable tensions were compared by setting various objectives function. The results show that the primary objectives in adjustment of cable tensions are different for various types of cable-stayed bridge. The shape of dead load state is the primary objective in adjustment of cable tensions for cable-stayed bridge with steel box girder. The optimization calculation method is simple, effective and precise for computing shape of dead load state and it has high practical values.

References:

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Last Update: 2007-06-20