鹦鹉洲长江大桥双壁钢围堰水平桁架在复杂工况下力学性能分析  

Mechanical Properties Analysis of Horizontal Truss for Double-wall Steel Cofferdams in Yingwuzhou Yangtze River Bridge Under Complex Working Condition

作　　者：肖亮 甘一鸣[2] XIAO Liang;GAN Yi-ming(School of Civil Engineering,Architecture and Environment,Hubei University of Technology, Wuhan 430068,China;China Railway Major Bridge Engineering Group Co,Ltd,Wuhan 430050,China)

机构地区：[1]湖北工业大学土木建筑与环境学院,武汉430068 [2]中铁大桥局集团有限公司,武汉430050

出　　处：《建材世界》2018年第2期90-94,共5页The World of Building Materials

摘　　要：鹦鹉洲长江大桥主桥桥墩采用双壁钢套箱围堰的结构形式,体量大,工况多,现场施工环境复杂。基于施工安全考虑,选择围堰着床和围堰内抽水两个最危险工况,利用Midas和规范计算两种方式对该围堰水平桁架进行受力计算和分析。分析结果表明,该围堰水平桁架受力达到规范要求,设计合理可靠。Main bridge pier of Yingwuzhou Yangtze River Bridge adopts the structure of double-wall steel cofferdams,which features large volume,multiple working conditions,and complex environment of on-site construction.For safety reasons of construction,this article,selecting the two most dangerous working conditions of sinking down and pumping in cofferdam,calculates and analyzes horizontal truss of cofferdam by Midas and standard calculation.The results show that horizontal truss of cofferdam meets the standard requirement and has reasonable and reliable design.

关 键 词：双壁钢围堰 水平桁架 围堰着床 围堰内抽水 

分 类 号：U445.556[建筑科学—桥梁与隧道工程]