预应力预制闸墩接缝型式及抗震性能试验研究  

Experimental study on joint types and seismic performance of prestressed precast piers

作　　者：蔡小宁 温永昕 李庆斌[3] 周亮 巩妮娜 杨佳乐 刘光昆 CAI Xiaoning;WEN Yongxin;LI Qingbin;ZHOU Liang;GONG Nina;YANG Jiale;LIU Guangkun(School of Civil and Ocean Engineering,Jiangsu Ocean University,Lianyungang 222005,China;Lianyungang Xuwei Port Holding Group Co.,Ltd,Lianyungang 222000,China;State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China;Yellow River Engineering Consulting Co.,Ltd.,Zhengzhou 450003,China)

机构地区：[1]江苏海洋大学土木与港海工程学院,江苏连云港222005 [2]连云港徐圩港口控股集团有限公司,江苏连云港222000 [3]清华大学水圈科学与水利工程全国重点实验室,北京100084 [4]黄河勘测规划设计研究院有限公司,郑州450003

出　　处：《水力发电学报》2025年第4期50-58,共9页Journal of Hydroelectric Engineering

基　　金：国家自然科学基金(51878315;52101313);连云港市科技局重点研发计划(CG2207)。

摘　　要：预应力预制节段闸墩具有施工速度快、受力性能好的优点。节段之间以及节段与基础的接缝型式对结构的受力性能影响较大,本文提出新型预应力预制节段闸墩接缝型式并进行接缝抗震性能试验研究,研究接缝处的设计参数对结构抗震性能的影响。试验结果表明节段之间接缝处设置连接钢板可以有效避免节段接缝处在侧向荷载作用下开裂,保证节段墩柱的整体性,而节段-基础接缝处安装负泊松比耗能件,可有效增大结构的耗能和承载力,但同时也会引起残余变形的增大。本文所得结论可供工程设计参考。Prestressed precast segmental piers have the advantages of fast construction and good mechanical performance.The joint types between segments and between segments and foundation have great influence on the seismic performance of the structure.This paper presents an experimental study on a new type of joints that we have designed for prestressed precast segment piers,focusing on the structure’s seismic performance and the influence of design parameters.The results show that the connecting steel plates installed at the segment joints are very effective in preventing the joint from cracking under lateral load and ensuring the integrity of the pier column,while the energy dissipators with a negative Poisson's ratio installed at the segment-foundation joints are effective in enhancing energy consumption and the structure’s bearing capacity.These findings are useful for engineering design of pier structures.

关 键 词：预应力 预制闸墩 接缝形式 抗震性能 连接钢板 负泊松比耗能件 

分 类 号：TV321[水利工程—水工结构工程]