鄂东长江公路大桥桥塔设计  

Design of Pylons of Edong Changjiang River Highway Bridge

作　　者：彭晓彬[1] 陈杏枝[1] 

机构地区：[1]湖北省交通规划设计院,湖北武汉430051

出　　处：《桥梁建设》2009年第5期40-43,48,共5页Bridge Construction

摘　　要：鄂东长江公路大桥主桥为主跨926 m的半漂浮体系双塔混合梁斜拉桥,桥塔采用"凤翎"式钢筋混凝土结构,由下塔柱、下横梁、中塔柱、中上塔柱连接部及上塔柱组成,采用C50混凝土。采用MIDAS 2006桥梁综合程序和桥梁博士3.0程序,按三维空间框架结构分裸塔阶段、最大单悬臂阶段和使用阶段对桥塔进行结构计算,并对下塔柱(含下横梁)和中上塔柱连接段进行局部仿真分析,结果表明桥塔的应力、强度和刚度均满足规范要求。桥塔施工分为下塔柱、下横梁、中塔柱、上塔柱和塔顶结构等施工阶段,介绍桥塔施工要点。The main bridge of Edong Changjiang River Highway Bridge is a semi-floating system hybrid girder cable-stayed bridge with double pylons and with a main span 926 m. The pylons of the Bridge are designed as the ＂phoenix＇s plume＂ reinforced concrete structures made up of the lower legs, lower cross beams, middle legs, middle and upper leg connections and upper legs with the grade of the concrete used for the pylons being C50. The bridge comprehensive program MIDAS 2006 and the program Doctor Bridge V3.0 are used to calculate the pylons in accordance with the three-dimensional frame structures in the free standing stage, maximum single cantilever construction stage and operation stage of the Bridge and the local simulation analysis of the lower legs （lower cross beams are included） and the middle and upper leg connections is made as well. The results of the analysis show that the stress, strength and rigidity of the pylons can meet the requirements in the specifications. The construction of the pylons is carried out respectively in the stages of the lower legs, lower cross beams, middle legs, upper legs and pylon tops and the key points of the construction of the pylons are presented.

关 键 词：斜拉桥 桥塔 结构设计 结构计算 桥梁设计 

分 类 号：U443.38[建筑科学—桥梁与隧道工程]