|本期目录/Table of Contents|

[1]周绪红,戴鹏,狄谨.钢箱梁斜拉桥成桥索力优化分析[J].建筑科学与工程学报,2007,24(02):19-23.
　ZHOU Xu-hong,DAI Peng,DI Jin.Optimization Analysis of Cable Tensions of Dead Load State for Cable-stayed Bridge with Steel Box Girder[J].Journal of Architecture and Civil Engineering,2007,24(02):19-23.
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
24卷
期数:
2007年02期
页码:
19-23
栏目:
出版日期:
2007-06-20

文章信息/Info

Title:
Optimization Analysis of Cable Tensions of Dead Load State for Cable-stayed Bridge with Steel Box Girder
作者:
周绪红1,2,戴鹏1,狄谨1
1. 长安大学 公路学院,陕西 西安 710064; 2. 兰州大学 土木工程与力学学院,甘肃 兰州 730000
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
关键词:
桥梁工程;  钢箱梁斜拉桥;  索力优化;  成桥线形;  有限元分析
Keywords:
bridge engineering;  cable-stayed bridge with steel box girder;  optimization of cable tension;  shape of dead load state;  finite element analysis
分类号:
U448.28
DOI:
-
文献标志码:
A
摘要:
基于最优化理论,建立了斜拉桥索力约束优化数学模型。以斜拉桥空间有限元模型为基础,以成桥线形为目标函数,通过转化次要目标函数为约束条件等措施,采用无约束的共轭梯度法,对成桥索力进行了优化计算,并应用该法对红岛航道桥这一独塔双索面钢箱梁斜拉桥进行了索力调整计算。通过设置不同的目标函数,比较了索力调整方法的差异和适用性。计算结果表明:不同类型的斜拉桥,其索力调整的主要目标也不尽相同,钢箱梁斜拉桥的索力调整主要以成桥线形为首要目标; 该优化计算方法简便有效,计算精度高,成桥线形拟合好,具有较高的实用价值。
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.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2007-01-12
基金项目:山东省交通科技基金项目(2006X015)
作者简介:周绪红(1956-),男,湖南南县人,教授,博士生导师,工学博士,E-mail:zxh@lzu.edu.cn。
更新日期/Last Update: 2007-06-20