带锚固板钢筋的桥墩拟静力试验研究

Pseudo-static Test Study on Bridge Piers with Anchorage Plated-rebar

采用MTS伺服加载系统对2种不同锚固形式(锚固板与钢筋末端弯折)的钢筋混凝土双柱桥墩开展低周反复加载试验,研究锚固区域的应力应变及钢筋滑移状态,对比两者的滞回性能和极限状态。研究结果表明,带锚固板钢筋具有可靠的锚固性能,在桥墩节点区域采用锚固板的构造措施,可有效解决钢筋拥挤、施工不便等问题。

Low cycle repeated loading test was carried out by using MTS on reinforced concrete double column piers with two different anchorage types(anchorage plate and steel end bending)to study the stress-strain and slip state in anchorage zone and to compare the hysteresis behavior and ultimate state of the anchorage plate and the steel end bending.The experimental results show that rebar with anchorage plate has reliable anchorage performance,and adoption of anchorage plates in the pier node zone could effectively solve the problems of rebar congestion and construction inconvenience.