Optimum design of concrete cable-stayed bridges with prestressed decks

被引：10

作者：

Martins, Alberto M. B. ^{[1
]}

Simoes, Luis M. C. ^{[1
]}

Negrao, Joao H. J. O. ^{[1
]}

机构：

[1] Univ Coimbra, Dept Civil Engn, Coimbra, Portugal

来源：

INTERNATIONAL JOURNAL FOR COMPUTATIONAL METHODS IN ENGINEERING SCIENCE & MECHANICS | 2016年 / 17卷 / 5-6期

关键词：

Cable-stayed bridges; construction stages; prestressed concrete; prestressing forces; sizing design variables; structural optimization; time-dependent effects;

D O I：

10.1080/15502287.2016.1231237

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This article presents an optimization-based numerical method for the design of concrete cable-stayed bridges with prestressed decks. This method includes a structural analysis module and a sensitivity analysis and optimization module. The structural analysis considers concrete time-dependent effects, construction stages and geometrical nonlinearities. The discrete direct method is used for sensitivity analysis and an entropy-based approach is used for structural optimization. The design is formulated as a multi-objective optimization problem with objectives of minimum cost, minimum deflections and stresses. Numerical examples concerning the optimization of a real sized cable-stayed bridge are presented to illustrate the applicability of the proposed method.

引用

页码：339 / 349

页数：11

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