预应力混凝土管桩节点抗震性能研究
|
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。
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.
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.
引文
[1]完平平.预应力混凝土管桩抗震分析及思考[J].广东科技,2009(3):79-80.
[2]刘惠珊.桩基震害及原因分析——日本阪神大地震的启示[J].工程抗震,1999(1):37-43.
[3]Tam C M,Thomas K L,Tong Tony,et al.Diagnosis ofPrestressed Concrete Pile Defects Using Probabilistic NeuralNetworks[J].Engineering Structures,2004,26:1155-1162.
[4]杜福生.预应力高强混凝土管桩(PHC)抗震性能的探讨[J].福建建筑,2009(3):57-58.
[5]GB13476—2009先张法预应力混凝土管桩[S].
[6]DB29-110—2010预应力混凝土管桩技术规程[S].
[7]JGJ101—96建筑抗震试验规程[S].
[8]倪诗阁.结构试验中屈服变形的确定方法[J].工业建筑,1996,26(8):45-50.
[2]刘惠珊.桩基震害及原因分析——日本阪神大地震的启示[J].工程抗震,1999(1):37-43.
[3]Tam C M,Thomas K L,Tong Tony,et al.Diagnosis ofPrestressed Concrete Pile Defects Using Probabilistic NeuralNetworks[J].Engineering Structures,2004,26:1155-1162.
[4]杜福生.预应力高强混凝土管桩(PHC)抗震性能的探讨[J].福建建筑,2009(3):57-58.
[5]GB13476—2009先张法预应力混凝土管桩[S].
[6]DB29-110—2010预应力混凝土管桩技术规程[S].
[7]JGJ101—96建筑抗震试验规程[S].
[8]倪诗阁.结构试验中屈服变形的确定方法[J].工业建筑,1996,26(8):45-50.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心