双反弯曲线钢箱连续梁桥剪力滞效应研究  

Research of Shear Lag Effect in Reverse Bending Curved Steel Box Continuous Girder Bridge

作　　者：张磊[1] 郑宝成[1] 成丕富 

机构地区：[1]河北工业职业技术学院,河北石家庄050091 [2]长沙市规划设计院有限责任公司,湖南长沙410007

出　　处：《公路工程》2013年第4期124-127,132,共5页Highway Engineering

摘　　要：双反弯曲线钢箱梁桥由于存在弯扭耦合效应,会引起截面扭转、支座反力不均匀等现象,受力较为复杂。针对双反弯曲线钢箱梁桥的剪力滞效应,本文通过采用壳单元建立空间精细化有限元模型,详细讨论了其横向及纵向"剪力滞"效应的规律,可为今后类似桥梁的设计计算提供参考。Reverse bending curved steel box continuous girder’s stress state is complex because of its coupling effect of bend-twist.It can cause twist of girder section and uneven distribution of support reactions.In order to calculate the shear lag effect of reverse bending curved steel box continuous girder,3-D finite element model is established.The law of bend-twist effect obtained in this article may be a reference for similar works.

关 键 词：双反弯曲线 剪力滞效应 弯扭耦合 

分 类 号：U448.213[建筑科学—桥梁与隧道工程]