中国铁道科学2012，Vol.33Issue(z1)：86-91,6.DOI:10.3969/j.issn.1001-4632.2012.S1.15
大跨度连续钢箱梁横隔板的合理布置
Proper Diaphragm Layout of Long-Span Continuous Steel Box Girder
摘要
Abstract
According to the analysis on the structural behavior of steel box girder (SBG) under eccentric load, the proper diaphragm layout of SBG should be investigated from the point of analyzing distortional warping stress. It is put forward that Beam on Elastic Supports Analogy (BESA) should be adopted to analyze the distortional warping stress of long-span variable cross-section SBG. The distortion of single-room rectangular box girder is regarded as the bending of the beam on elastic foundation (BEF) based on the similarity between the distortional warping control differential equation of the single-room rectangular box girder and the bending control differential equation of BEF. By this analogy method, the distortional warping stress of the single-room rectangular box girder influenced by diaphragm spacing and rigid can be solved. With the distortional warping stress of the controlled box girder less than 15 percent of bending normal stress as the target, the method is adopted to determine the proper diaphragm layout for Chongqi Main Bridge. If diaphragm spacing is 5. 6 m, solid-web diaphragm should be adopted on top of each pier, while truss-type diaphragms for others.关键词
连续钢箱梁/横隔板/畸变翘曲应力/弹性支承连续梁比拟法Key words
Continuous steel box girder/ Diaphragm/ Distortional warping stress/ Beam on Elastic Supports Analogy (BESA)分类
交通工程引用本文复制引用
方兴,白玲,史永吉..大跨度连续钢箱梁横隔板的合理布置[J].中国铁道科学,2012,33(z1):86-91,6.基金项目
江苏省交通科学研究计划项目(1040YF1206) （1040YF1206）
