新型波纹管-UHPC槽连接预制拼装桥墩抗震性能数值模拟分析

Numerical Simulation Analysis on Seismic Performance of Precast SegmentalBridge Piers Connected by Novel Corrugated Pipe-UHPC Slot

提出了一种可用于高烈度区的新型波纹管-UHPC槽预制拼装桥墩连接方式,数值模拟分析了新型波纹管-UHPC槽预制拼装桥墩与现浇桥墩的承载力、失效模式与耗能等抗震性能。结果表明,新型波纹管-UHPC槽预制拼装桥墩的承载力、延展性等抗震性能与现浇桥墩接近,从而验证了该新型波纹管-UHPC槽连接方式用于高烈度区预制装配桥墩抗震设计的有效性,研究结果对于预制拼装桥墩在高烈度区的应用有参考价值。

In this paper,a novel corrugated pipe-UHPC slot connection for precast bridge piers in high intensity areas is proposed.Seismic performances of bearing capacity,failure mode and energy dissipation of the novel precast bridge pier and cast-in-place bridge pier are numerically simulated.The result shows that the bearing capacity and ductility of the precast assembled piers are close to that of the cast-in-place piers.The effectiveness of the corrugated pipe-UHPC slot connection in high intensity areas is verified.The research is great significant for the application of precast assembled piers in high intensity areas.