论文部分内容阅读
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。
The connection node between the pipe pile and the cap is the weak link of the structure, which is easy to destroy when the earthquake occurs and then cause serious consequences. By changing the connection form between pipe pile and cap, the effect of horizontal low-cycle repeated earthquake is simulated and the performance of pipe pile in load-displacement hysteresis and ductility is studied. The experimental results show that adding non-prestressed reinforcing bars into the core-filling pipe pile has a good effect on improving the bearing capacity of the pipe pile. The non-prestressed steel bars are used as the connecting reinforcing bars to insert into the caps at an angle to connect the caps and pipe piles. The seismic energy dissipation and the ductility of joints are very significant.