装配式梁柱狗骨式耗能铰连接节点抗震性能研究  

Seismic performance of prefabricated beam⁃to⁃column joint with dog⁃bone shaped steel energy⁃dissipating hinge

作　　者：郑莲琼 崔芳兵 魏常贵 颜桂云 薛潘荣 ZHENG Lianqiong;CUI Fangbing;WEI Changgui;YAN Guiyun;XUE Panrong(School of Civil Engineering,Fujian University of Technology,Fuzhou 350118,China;Fujian‑Taiwan Cooperative Institute of Civil Engineering Technology in Universities of Fujian Province,Fuzhou 350118,China;Fujian Provincial Erjian Construction Group Co.,Ltd.,Fuzhou 350001,China)

机构地区：[1]福建理工大学土木工程学院,福建福州350118 [2]福建省高校闽台合作土木工程技术工程研究中心,福建福州350118 [3]福建省二建建设集团有限公司,福建福州350001

出　　处：《武汉大学学报(工学版)》2025年第2期209-221,共13页Engineering Journal of Wuhan University

基　　金：国家自然科学基金项目(编号:51578152,51878174);福建省自然科学基金项目(编号:2020J01887)。

摘　　要：提出一种新型装配式梁柱节点,该节点由预制混凝土梁柱、狗骨式削弱的耗能连接铰、钢管约束预制节点核心区等装配组成。设计并制作新型装配式梁柱狗骨式耗能铰连接节点和现浇节点进行低周往复荷载试验,分析其破坏特征,并根据节点的滞回曲线、骨架曲线、耗能能力、延性、刚度退化、强度退化及应变等对新型装配式梁柱节点抗震性能进行了研究。结果表明:新型装配式梁柱节点的连接方式合理有效,节点具有良好的整体性能;新型装配式梁柱狗骨式耗能铰连接节点的破坏模式为狗骨式耗能铰屈曲,预制梁柱构件处于弹性或弱非线性阶段,实现梁端塑性可控;装配式节点滞回曲线较现浇节点滞回曲线更饱满、承载能力更高、耗能和变形能力更强,刚度退化较慢,抗震性能明显提高。最后提出了在水平荷载和竖向荷载共同作用下的新型装配式梁柱狗骨式耗能铰连接节点设计方法。This study presents a novel prefabricated beam-column joint,which is composed of a precast concrete beam and column,a dog-bone shaped steel energy-dissipating hinge,and a prefabricated steel tube confined joint core.A new prefabricated beam-column joint with dog bone energy-dissipating hinge and a cast-in place joint were designed and fabricated.The low-cycle reciprocating load tests were carried out to study the failure characteristics,and the seismic performance of the new prefabricated joint was investigated according to the hysteretic curve,skeleton curve,energy-dissipating capacity,ductility,stiffness degradation,strength degradation and strain of the joint.The experimental results demonstrate that the connection mode of the new assembled beam-column joints is reasonable and effective,and the joints have good overall performance.The failure mode of the new prefabricated beam and column joint with dog-bone shaped steel energy-dissipating steel hinge is buckling of the dog bone energy dissipating hinge,and the prefabricated beam-column members are in the elastic or weak nonlinear stage,which realizes the plastic control of the beam end.Compared with the cast-in-place joint,the prefabricated node has fuller hysteretic curve,higher load-bearing capacity,stronger energy dissipation and deformation capacity,slower stiffness degradation,and significantly improved seismic performance.Finally,the design method of the new type of prefabricated beam-to-column joint with dog-bone shaped steel energy-dissipating hinge under the combined action of horizontal load and vertical load is proposed.

关 键 词：装配式节点 狗骨式耗能铰 低周往复荷载试验 抗震性能 设计方法 

分 类 号：TU352.1[建筑科学—结构工程]