钢混凝土组合梁临时支撑处横向裂缝成因分析及计算  

Cause Analysis of Transverse Cracks at Steel-concrete Composite Beam Temporary Support Spot and Calculation

作　　者：孙韬[1] 

机构地区：[1]江苏建筑职业技术学院建筑工程技术学院,江苏徐州221116

出　　处：《徐州建筑职业技术学院学报》2011年第3期6-8,12,共4页Journal of XUZHOU Institute of Architectural Technology

基　　金：建设部科学技术项目计划(05-K5-12)

摘　　要：在大跨度钢-混凝土组合梁的施工中,临时支撑附近的梁混凝土翼板出现横向裂缝.从临时支撑处梁上翼板应力变化入手,分析了裂缝产生的原因,并对翼板应力进行分析和计算,提出了组合梁施工阶段临时支撑的间距计算公式,并结合工程实例进行验证.During construction of large span steel-concrete composite beam,transverse cracks appear at concrete flange plate near temporary support.this paper analyses the cause of cracks from changes of beam flange plate stress at temporary support spot and carries out analyses and calculations of flange plate stress.Calculation formula of composite beam temporary support spacing at construction stage is put forward and verified through engineering examples.

关 键 词：钢-混凝土组合梁 临时支撑处 混凝土翼板 横向裂缝 分析 计算 实例验证 

分 类 号：TU398[建筑科学—结构工程]