锈蚀栓钉连接件力学性能试验研究  

Experimental Analysis on Mechanical Properties of Corroded Stud Shear Connectors

作　　者：荣学亮[1] 黄侨[1] 

机构地区：[1]东南大学交通学院,南京210096

出　　处：《土木建筑与环境工程》2012年第2期15-20,共6页Journal of Civil,Architectural & Environment Engineering

基　　金：国家自然科学基金资助项目(51078078)

摘　　要：为了解钢-混组合梁的栓钉连接件发生锈蚀后的静力工作性能,进行了4组栓钉试件的推出试验。首先通过人工电化学快速锈蚀方法使试件中的栓钉达到预定锈蚀状况,然后进行静载破坏试验,通过试验结果分析不同锈蚀状况对栓钉连接件力学性能的影响。结果表明:栓钉钉杆尤其是靠近结合面处发生锈蚀时,其极限承载力降低最大达到18%,相同荷载作用下滑移量增加,与极限荷载相对应的滑移量最大减小了12%;栓钉大头端部发生锈蚀时,对推出试件的承载力影响不大,但对栓钉连接件变形性能影响较大。Four series stud push-out specimens were conducted to study static mechanical behavior when stud shear connectors of composite beams were corroded.Firstly,the studs were manually rapidly corroded by electrochemical methods,and then a static load test was performed on them.Test results show that when corrosion occurs at stud rod especially close to combined surface,the ultimate bearing capacity reduces most by 18%,slip under the same load increases,and slip relative to the ultimate load reduces most by 12%.When corrosion occurs at the large end of stud,it has little effect on ultimate bearing capacity of push-out specimens,but deformation performance of stud shear connectors is affected seriously.

关 键 词：栓钉连接件 锈蚀 极限承载力 荷载-滑移 

分 类 号：TU398[建筑科学—结构工程] U448.21[建筑科学—桥梁与隧道工程]