过载损伤混凝土T梁的抗弯承载力试验研究  

Experimental sudy on bending capacity of reinforced concrete T-beamsafter overloading damage

作　　者：王振海[1] 邓军[1] 王道耀 

机构地区：[1]广东工业大学土木与交通工程学院,广东广州510006

出　　处：《混凝土》2014年第6期31-33,40,共4页Concrete

基　　金：新世纪优秀人才支持计划项目(NCET-13-0739);国家自然科学基金项目(51278131;50808085);霍英东教育基金会青年教师基金项目(131073)

摘　　要：通过对1根对比梁和3根过载损伤梁进行静载试验,研究了过载损伤钢筋混凝土T梁的抗弯性能,对过载损伤后试件的挠度变化、裂缝开展情况、抗弯承载力以及延性进行分析。结果表明:过载损伤使得钢筋混凝土T梁产生一定的残余变形,产生的裂缝也不能完全闭合,由于试验梁的钢筋在反复受力后产生了一定的冷拉效果,过载损伤梁的强度略为上升,但延性显著下降。One contrast beam and three beams after overloaddamagewere tested to study the bending capacity of reinforced concrete T-beams after overloadingdamage.Thechange of the deflection,the development of cracks,the bending capacity and the ductility were ana-lyzed.The results show that the reinforced concrete T-beams after overloading damagehavea certain residual deformation ,cracks caused by overload cannot be closed completely.As a result of the steel bar in test beam after repeated stress will produce a certain effect of cold-draw-ing,the strength of reinforced concrete T-beams after overloading damage increased slightly,but the ductility significantly decreased.

关 键 词：过载损伤 荷载谱 承载力 钢筋混凝土T梁 

分 类 号：TU528.01[建筑科学—建筑技术科学]