GFRP/钢绞线复合筋混凝土梁开裂性能试验

郝庆多¹, 王川¹, 王勃¹, 欧进萍²

1.哈尔滨工业大学土木工程学院;2.大连理工大学土木工程学院



摘要:

为了研究GFRP/钢绞线复合筋混凝土梁的开裂性能,设计了5根GFRP/钢绞线复合筋混凝土梁试件,并对混凝土梁试件进行三分点静载试验研究,试验变量为混凝土梁截面尺寸和混凝土保护层厚度.在系统分析试验数据的基础上,提出GFRP/钢绞线复合筋混凝土梁抗裂承载力与最大裂缝宽度的计算方法,并给出使用荷载作用下的裂缝宽度限值.

关键词:  GFRP/钢绞线复合筋  混凝土梁  开裂性能  试验研究

DOI：10.11918/j.issn.0367-6234.2012.02.002

分类号:TU375.1

基金项目:国家自然科学基金资助项目(51008091);中国博士后科学基金资助项目(20090460913)



Experimental study on cracking behavior of concrete beams reinforced with GFRP/steel wire composite rebar

HAO Qing-duo¹, WANG Chuan¹, WANG Bo¹, OU Jin-ping²

1.HAO Qing-duo1,WANG Chuan1,WANG Bo1,OU Jin-ping1,2(1.School of Civil Engineering,Harbin Institute of Technology,150090 Harbin,China;2.School of Civil Engineering,Dalian University of Technology,116024 Dalian,Liaoning,China)

Abstract:

To study the cracking behavior of concrete beams reinforced with GFRP/steel wire composite rebar,five simply-supported beams were tested under three-point static load.The test variables were beam section size and concrete cover depth.Based on analysis on the test results,the calculation methods of cracking capacity and maximum crack width were proposed,and the limit value of crack width was suggested.

Key words:  GFRP/steel wire composite rebar  concrete beam  cracking behavior  experimental study