【摘要】 管桩与承台的连接节点是结构的薄弱环节,在地震发生时容易破坏继而造成严重的后果。通过改变管桩与承台的连接形式,对结构施加水平低周反复作用模拟地震作用,研究管桩的荷载-位移滞回、延性等方面的性能。试验结果表明:填芯管桩内增设非预应力钢筋对于提高管桩的承载能力有良好的效果,以非预应力钢筋作为连接钢筋以一定角度插入承台体内连接承台和管桩,对于结构节点的抗震耗能和节点延性的提高效果十分显著。更多还原

【Abstract】 Prestressed concrete pipe pile is applied widely.Pipe pile and pile cap joints are structural weaknesses that can easily break under a earthquake,thus resulting in serious consequences.By changing the connection form of a pipe pile and pile cap,and imposing cyclic loading on the structure to simulated seismic wave,it was studied on pipe pile load-displacement hysteresis,ductility etc.Test results showed that adding non-prestressed rebar within the filled pipe pile could increase evidently the bearing capacity of pipe piles;and using to non-prestressed rebar dowels inserted at an angle in the connection between the cap and pipe pile could have a great improvement on the structural ductility and seismic energy dissipation of the joint.更多还原