外伸式端板连接的蜂窝钢梁-复合焊接环式箍筋混凝土柱组合节点抗剪性能研究

Study on shear behavior on honeycombed steel beam and welded compoundring-hoop concrete column composite joint connected by extended end-plate

通过低周往复加载试验,研究了外伸式端板连接的蜂窝钢梁-复合焊接环式箍筋混凝土柱组合节点的抗剪性能,得到如下结论:由于焊接环式箍筋的约束,三向受压状态下节点域的混凝土抗剪能力比钢筋混凝土节点混凝土的抗剪能力显著提高;外伸式端板连接型蜂窝钢梁-混凝土柱组合节点高强螺栓预压力的存在,使得节点域的混凝土开裂较少,改善了节点域的抗剪性能.

The shear behaviour of honeycombed steel beam and welded compound-ring-hoop concrete col- umn composite joint connected by extended end-plate through experiment were investigated. The experimental results showed pound-ring-hoop, the shear capability of concrete in the joint a low-frequency quasi-static cyclic loading that because of the restriction effect of corn- region under three-directional pressure was significantly improved in contrast with the shear capability of concrete in the reinforced concrete joint re- gion. Because of the pre-pressure of high-strength bolts,concrete cracks were fewer in the joint region and the shear behaviour of joint region was improved.