钢-混凝土组合梁与混凝土柱节点的抗震性能试验研究

Experimental research on seismic behavior of SC beam to RC column connection

基于端板螺栓连接的钢-混凝土组合梁与混凝土柱节点的低周反复荷载试验,对其受力过程、破坏形式、滞回曲线、骨架曲线、延性等抗震性能进行了较为深入的研究与分析。结果表明:端板螺栓连接的钢-混凝土组合梁与混凝土柱节点试件的滞回曲线呈梭形,且较为丰满,耗能能力强;组合梁横向配筋率及其配筋形式、组合梁剪力连接度对节点的承载力影响并不显著,但对节点的延性有显著的影响。横向配筋率的增大及横向配筋为封闭式可提高节点的变形能力,剪力连接度越高变形能力越强。

Based on experiments of endplate bolted connection of the SC beam and RC column specimen under cyclic loading, the failure pattern, hysteretic loops, skeleton curves and ductility were studied. Researches show that endplate bolted connection of the SC beam and RC column specimen had enough energy dissipation capacity and stable hysteretic characteristic. Yielding capacity and ultimate capacity of this connection are less influenced by the rations of transverse steel and the arrangement of steel, and the degree of shear connection of composite beam, while the ductility is influenced by these two parameters obviously. The increase of the rations of transverse steel add to the ductility of connections; and the increase of degree of shear connection lead to stronger deformability.