摘要
通过钢-混凝土组合结构形式及在雀替位置处设置黏滞阻尼器,可提升仿古建筑枋-柱节点的力学性能。为研究其力学性能,共设计3个试件,包括2个附设黏滞阻尼器的试件及1个未附设黏滞阻尼器的对比试件,进行快速往复加载试验,分析加载全过程中试件的破坏特性及破坏机制,对其力学特性关键指标进行对比分析,包括恢复力特征曲线、骨架曲线、延性及刚度变化等。试验结果显示:采用钢-混凝土组合结构形式的仿古建筑双枋-柱节点力学性能得到一定幅度的提高;结构破坏时形成梁铰机制,符合抗震设计要求;在阑额与柱连接处设置黏滞阻尼器能有效提升节点的变形性能及承载能力,并在一定程度上抑制试件的刚度退化速率。总体上,结构整体抗震性能有大幅提高。
The mechanical behavior of lintel-column joints in antique buildings can be improved by adopting a steel-concrete composite structure and setting viscous dampers at the Queti.For the study of its mechanical properties,three specimens were designed and tested,namely,two specimens with viscous dampers and one specimen without viscous damper for comparison.The failure process and mechanism of the lintel-column joints in antique buildings were analyzed using the three specimens under dynamic cyclic sine wave loading.Based on the experimental results,the mechanical properties of the lintel-column joints were analyzed,including the restoring force characteristic curve,skeleton curve,and changes in ductility and stiffness.The results indicate that the seismic behavior of the lintel-column joints in antique buildings with steel-concrete composite structures was improved to a certain extent.The beam hinge mechanism was formed when the structure was damaged,which meets the seismic design requirement.Viscous dampers at the Queti can enhance the bearing capacity and deformation performance of joints and restrain the stiffness degradation rate of the specimen to a certain extent.Overall,the general seismic performance of the structure has been greatly improved.
作者
公衍茹
董金爽
隋䶮
黄斌
杨亮
李龙建
GONG Yanru;DONG Jinshuang;SUI Yan;HUANG Bin;YANG Liang;LI Longjian(College of Civil Engineering and Architecture,Hainan University,Haikou 570228,Hainan,China;School of Civil Engineering,Xi'an University of Architecture&Technology,Xi'an 710055,Shaanxi,China;Hainan Branch of China Railway Construction Group Co.,Ltd.,Haikou 570208,Hainan,China)
出处
《地震工程学报》
CSCD
北大核心
2023年第6期1377-1385,共9页
China Earthquake Engineering Journal
基金
海南省自然科学基金项目(520RC544)
国家重点研发计划(2019YFD1101003)
海南省重大科技计划项目(ZDKJ201803)
国家自然科学基金项目(52068019)
研发技术服务合同项目(华南-海口2021073QT2022011)。
关键词
仿古建筑
枋-柱节点
黏滞阻尼器
力学性能
antique buildings
lintel-column joint
viscous damper
mechanical property
