基于梁格法的变宽箱梁桥空间效应分析  

Analysis of Space Effect of Widened Box-girder Bridge Based on Beam Grid Method

作　　者：王文龙[1] 姜基建[1] WANG Wenlong;JIANG Jijian(Guizhou Transportation Planning Survey ＆ Design Academe Co.,Ltd.,Guiyang 550081,China)

机构地区：[1]贵州省交通规划勘察设计研究院股份有限公司,贵阳550081

出　　处：《交通科技》2018年第5期49-51,共3页Transportation Science & Technology

摘　　要：利用有限元软件WISEPLUS对比分析了某变宽箱梁桥采用单梁模型与梁格模型的计算结果。分析表明,在常规的单梁模型计算中往往忽视由于恒载横向分布不均而产生的的空间效应,且对于某些桥,常用的活载偏载系数也取值过小,从而导致边腹板的计算结果偏不安全。通过计算得到了本桥恒载及活载的偏载系数,并为边腹板采用了不同的配束方式以解决其受力过大的问题。In this paper, the finite element sol calculation results of a single beam model and tware WISEPLUS analysis shows that the single beam model often neglects the spa was used to compare and analyze for a widened box girder bridge. ce effect due to the dead load and of live load is also too small, which results in unsafecalculation. In this paper, coefficient of the dead load and live load was given by calculation. solve the problem of the overstressed side webs is provided.

关 键 词：梁格法 箱梁 空间效应 WISEPLUS 

分 类 号：U441[建筑科学—桥梁与隧道工程]