崇明越江大桥大体积混凝土温度裂缝成因分析与控制  

Analysis and Control of Reasons of Temperature Cracks in Mass Concrete for Chongming Cross-river Bridge

作　　者：杨林鹏 

机构地区：[1]林同棪国际工程咨询(中国)有限公司,重庆401121

出　　处：《公路交通技术》2014年第1期88-90,共3页Technology of Highway and Transport

摘　　要：上海崇明越江大桥为主跨730 m斜拉桥,其塔高208.722 m,塔柱混凝土为C50高性能海工混凝土,具有弹性模量高、收缩徐变大、养护要求高等特点。通过有限元模拟,分析各种因素对大体积混凝土温度裂缝的影响,为大体积混凝土的施工控制提供借鉴。Shanghai Chongming Cross-fiver Bridge is a cable-stayed bridge at main span ot 730m and tower height of 208.722m, and tower columns are made of C50 high-performance marine concrete with features of high elastic modulus, large shrinkage and creep and high requirement for maintenance. This paper based on finite element simulation analyzes influences of various factors on temperature cracks in mass concrete to provide a reference for construction control of mass concrete.

关 键 词：大体积混凝土 裂缝 成因分析 裂缝控制 

分 类 号：U445[建筑科学—桥梁与隧道工程]