二次受力CFRP布加固钢筋混凝土梁的受剪性能研究  

Study on the shear properties of reinforced concrete beams with CFRP sheets under secondary eccentric loading

作　　者：张凯[1] 刘瑛[2] 叶天帅 

机构地区：[1]青岛理工大学土木工程学院,青岛266033 [2]青岛理工大学管理学院,青岛266033

出　　处：《青岛理工大学学报》2014年第5期17-21,109,共6页Journal of Qingdao University of Technology

摘　　要：在CFRP加固钢筋混凝土梁受剪承载力的基本假定的基础上,采用桁架-拱模型,推导出了一次受力下CFRP布加固钢筋混凝土梁的斜截面受剪承载力计算公式,考虑了CFRP受力的不均匀性,采用CFRP的有效应变,并在一次受力的基础上,考虑了二次受力对CFRP抗剪的不利,推导出了二次受力下CFRP布加固钢筋混凝土梁的受剪承载力公式.This paper,based on the shear properties of reinforced concrete beams with CFRP sheets,proposes a formula on the shear bearing capacity of reinforced concrete beams with CFRP sheets under firstly eccentric loading on a truss-arch model,and uses the effective strain of CFRP in consideration of the unevenness of the force CFRP and of negative aspects of shear force with CFRP under secondary eccentric loading.It also drives a formula on the shear bearing capacity of reinforced concrete beams with CFRP sheets under secondary eccentric loading.

关 键 词：受剪承载力 二次受力 CFRP布 

分 类 号：TU375.1[建筑科学—结构工程]