波纹钢腹板简支结合箱梁的截面优化  

Optimization Design of Section Parameters of Simply-Supported Composite Box-Girder Bridge with Corrugated Steel Webs

作　　者：孙洁[1] 刘磊[1] 彭益[1] 

机构地区：[1]北京交通大学土木建筑工程学院,北京100044

出　　处：《铁道标准设计》2012年第4期61-62,69,共3页Railway Standard Design

摘　　要：波纹钢腹板结合箱梁桥以其独特的优势,渐渐为国内外桥梁设计者所采纳,然而针对此类结合梁所做的优化分析并不多见。采用有限元分析软件ANSYS,建立了波纹钢腹板结合梁的有限元优化分析模型,首先对波纹腹板横截面进行了多变量的优化分析,然后在此基础上,对一跨度30 m的简支梁的横截面进行优化分析。得出波纹钢腹板尺寸的优化取值及箱梁截面的优化取值。With its unique advantages,composite box-girder bridges with corrugated steel webs are gradually adopted by domestic and foreign bridge designers,however,the optimization analysis of this composite girder is rare.In this paper,by using the finite element analysis software ANSYS,the finite element model of optimization analysis of composite box-girder with corrugated steel webs was established.First,the multivariable optimization analysis on the cross-section parameters of corrugated webs was implemented,and then,based on this optimization analysis results,the optimization analysis on the cross section of a simply supported girder with a span of 30 m was also implemented.As a result,the optimum values of the corrugated steel web dimensions and the section parameters of box-girder were obtained.

关 键 词：箱梁 波纹钢腹板 优化分析 

分 类 号：U448.21+6[建筑科学—桥梁与隧道工程]