粘贴玻璃钢板补强混凝土梁徐变特性初探  

The creep analysis of reinforced concrete beam strengthened by epoxy-bonded glass fiber reinforced plastic plate

作　　者：曾宪桃[1] 丁亚红[1] 

机构地区：[1]河南理工大学土木建筑工程系

出　　处：《四川建筑科学研究》2006年第6期81-85,共5页Sichuan Building Science

基　　金：河南省自然科学基金(004041700)

摘　　要：在对16片粘贴玻璃钢板补强的混凝土梁进行动静载试验后,得到了粘贴于混凝土梁受拉区的玻璃钢板的应变与混凝土梁主筋应变满足准平面假定的基础上,考虑混凝土徐变、收缩和玻璃钢板徐变情况下,对补强梁的徐变特性进行了分析、计算,结果表明,对补强加固梁进行徐变分析是必要的。徐变、收缩引起混凝土材料应变约有29%的增长量,补强梁的截面曲率约有15%的变化。By static test and fatigue test of sixteen reinforced concrete beams strengthened by glass fiber reinforced plastic plate, the GFRP plate and the concrete work together very well and the strain of GFRP and steel rebar satisfies the quasi - plane - hypothesis, This paper analyses the creep of composite beam considering the concrete＇s creep and shrink and the creep of GFRP, which indicates that it is necessary to analyze the creep of the composite beam, and the time deformation of concrete caused by creep and shrink increases by 99% and the curvature of the beam increases by 15%.

关 键 词：玻璃钢 混凝土梁 徐变 

分 类 号：TU312.3[建筑科学—结构工程]