预应力钢-混组合梁界面滑移性态试验研究  

Experimental study on interface slip behavior of prestressed steel-concrete composite beam

作　　者：胡少伟[1] 赵新铭[2] 梅振华[2] 叶祥飞[1] 

机构地区：[1]南京水利科学研究院,江苏南京210029 [2]南京航空航天大学土木工程系,江苏南京210016

出　　处：《水利水运工程学报》2012年第3期1-5,共5页Hydro-Science and Engineering

基　　金：中央级公益性科研院所重大项目<连续组合梁新型结构在工程中应用关键技术研究>(Y410006)

摘　　要：预应力组合梁作为一种新型的结构,其承载力影响因素众多.受外荷载时,预应力钢-混组合梁的混凝土翼板和钢梁不可能实现完全共同作用,交界面处会发生相对滑移,对其受力性能产生不利影响,因此有必要对预应力组合梁的界面滑移进行深入研究.根据预应力钢-混组合梁界面滑移的试验结果,分析了钢-混组合梁界面滑移的分布和发展规律,界面滑移随荷载的增大而增大,在组合梁的弹性工作阶段变化较慢,弹塑性阶段增加较快;相对滑移会导致钢和混凝土交界面上产生应变差.The bending capacity of prestressed steel-concrete composite beam which is a new structure is influenced by many parameters.The concrete flange and the steel of the composite beams can not work together completely when bearing load and some relative slip will occur in the interface between them,which is bad for the materials mechanical properties.So it is necessary to research the interface slip of the prestressed steel-concrete composite beam.According to the experimental results,the regularity of slip distribution and its development are analyzed in the paper.The research results show that the interface slip increases with load,and increases slowly in the elastic stage but quickly in the ductility stage;the relative slip will cause strain difference on the interface of the steel and concrete.

关 键 词：预应力钢-混组合梁 界面滑移 试验研究 

分 类 号：TU317.1[建筑科学—结构工程] TU398