预制桥墩连接技术研究综述

Summary of Research on Precast Pier Connection Technology

预制桥墩体系因具有快速施工、缩短工期等优点而被大量应用于国内外的非强震区。现阶段对预制桥墩体系抗震性能的研究尚不成熟,这限制了其在强震区的工程应用。将预制桥墩体系分成等同现浇连接、非等同现浇连接、UHPC连接和震后可恢复连接四类进行总结。介绍了不同连接形式的基本构造、传力机理和抗震性能,并重点阐述了UHPC连接和震后可恢复连接的相关研究。在此基础上分析并展望了预制桥墩连接技术未来的研究方向,以促进国内实际工程中对预制桥墩连接技术的合理应用。

Prefabricated bridge pier system has been widely used in non-strong earthquake areas at home and abroad due to its advantages of rapid construction and shorter construction period.At present,the research on seismic performance of precast pier system is not mature,which limits its engineering application in strong earthquake areas.The precast pier system is divided into equivalent cast-in-place connection,non-equivalent cast-in-place connection,UHPC connection and recoverable connection after earthquake.This paper introduces the basic structure,force transfer mechanism and seismic performance of different connection forms,and focuses on the relevant research of UHPC connection and post-earthquake recoverable connection.On this basis,the future research direction of precast pier connection technology is analyzed and prospected to promote the reasonable application of precast pier connection technology in domestic practical projects.