摘要
为了研究焊接H型钢PEC柱-钢梁顶底角钢连接节点的滞回性能,以顶底角钢连接节点为研究对象,共设计了6个试件。试件参数有高强螺栓直径、顶底角钢厚度和PEC柱翼缘厚度。通过低周反复水平荷载试验,得到了6个试件的荷载-位移曲线、位移延性系数等试验结果。试验结果表明,各参数中角钢厚度对节点的滞回性能影响较大,增大角钢厚度能明显提高节点的承载力,最大增幅为35.9%,但平均位移延性系数减小了46.1%;增大螺栓直径对节点承载力提高幅度较小,最大增幅为6.6%;柱翼缘厚度对节点的承载力几乎没有影响,但减小柱翼缘厚度使节点延性提高了68.1%。焊接H型钢PEC柱-钢梁顶底角钢连接节点具有良好的滞回性能。
In order to study the hysteretic behavior of top-seat angle connections in PEC welding column and steel beam,top-seat angle connections are taken as object,and six groups of specimens are designed. The parameters are high strength bolt diameter,angle thickness and column flange thickness. Through analyzing measured data of slow cyclic loading test,load-displacement hysteretic curves and ductility parameters and other test results on the six specimens are obtained. The result shows that： in all parameters the angle thickness has great influence on hysteretic behavior,the increase angle thickness can significantly improve the bearing capacity of connections,the largest increase is 35. 9%,but the average displacement ductility factor decreases by 46. 1%; bolt diameter can increase the bearing capacity slightly,the largest increase is 6. 6%; column flange thickness has almost no impact on the performance of connections,but the reducing column flange thickness can increase the average displacement ductility factor by 68. 1%. The top-seat angle connections in PEC welding column and steel beam have good hysteretic behaviors.
出处
《工程抗震与加固改造》
北大核心
2016年第2期39-43,24,共6页
Earthquake Resistant Engineering and Retrofitting
基金
国家自然科学基金资助项目(51268042)
