大直径钢筋装配式混凝土足尺框架拟动力试验研究  

Pseudo-dynamic test research of full-scale prefabricated concrete frame with large-diameter rebar

作　　者：张旭乔 肖绪文[2] 朱彤 张勇波 张磊 张志超 丛峻 武朝军 李罡 ZHANG Xuqiao;XIAO Xuwen;ZHU Tong;ZHANG Yongbo;ZHANG Lei;ZHANG Zhichao;CONG Jun;WU Chaojun;LI Gang(China Construction Engineering Testing(Beijing)Co.,Ltd,Beijing 101300,China;China State Construction Corporation Limited Technical Center,Beijing 101300,China;China Construction Industrial Engineering and Technology Research Academy Co.,Ltd,Beijing 101300,China;China Construction Sixth Engineering Bureau Corp.,Ltd,Tianjin 300171;Jinan Rail Transit Group Co.,Ltd,Jinan 250013,China;Jinan Transportation Development Investment Co.,Ltd,Jinan 250013,China)

机构地区：[1]中建工程试验检测(北京)有限公司,北京101300 [2]中国建筑股份有限公司技术中心,北京101300 [3]中建工程产业技术研究院有限公司,北京101300 [4]中国建筑第六工程局有限公司,天津300171 [5]济南交通发展投资有限公司,山东济南250013 [6]济南轨道交通集团有限公司,山东济南250013

出　　处：《建筑结构学报》2025年第1期19-29,共11页Journal of Building Structures

基　　金：中国建筑股份有限公司科研课题(CSCEC-2020-Z-18);山东省重点研发计划(2021CXGC011203);济南市社会民生专项(202131001)。

摘　　要：为研究大直径钢筋装配式混凝土框架抗震性能,对三层两跨大直径钢筋装配式混凝土足尺框架进行拟动力试验,分析框架在地震设防三标准下的破坏形态、动力时程反应及抗震性能指标。研究结果表明:多遇地震作用下,框架并未出现裂缝,处于弹性状态;设防地震作用下,框架出现微裂缝,试验结束时裂缝闭合;罕遇地震作用后,框架进入弹塑性状态。以承载力和残余变形确定使用性能时,多遇地震作用下达到抗震性能3(完好);设防地震作用下,达到抗震性能4(轻到中等破坏);罕遇地震作用下,达到抗震性能4(不严重破坏);各地震工况下,框架底部剪力-层间位移角曲线基本呈线性,具有较好的滞回性能;罕遇地震后,柱主筋均未屈服,一、二层梁端主筋屈服,实现了“强柱弱梁”的设计目标。同时,对大直径钢筋框架和普通直径钢筋框架进行有限元对比分析,两者各层层间位移以及层间剪力均值相对误差分别为-5.73%和-1.41%,动力性能接近。In order to study the seismic performance of concrete frames with large-diameter rebar,pseudo-dynamic test of three-story and two-span full-scale frame with large-diameter rebar was carried out.The failure mode,dynamic time-history response,and seismic performance indicators of the frame under the three seismic fortification standards were analyzed.The research results indicate that the frame has no cracks and is in an elastic state under frequent earthquake.Micro-cracks appear in the frame under design basis earthquake,and the cracks are closed at the end of the test.After rare earthquake,the frame is in elastoplastic state.When the seismic performance is determined by the seismic bearing capacity and residual deformation,the seismic performance 3(integrity)is achieved under frequent earthquakes,and the seismic performance 4(light to moderate damage)and seismic performance 4(not serious damage)is achieved under design basis earthquakes and rare earthquakes.The curve of the base shear-inter-story drift basically changes linearly under each earthquake,and has good hysteretic properties.After the rare earthquake,the main rebar of the column did not yield,and the main rebar of the first and second floor beams did yield,realizing the design goal of'strong column and weak beam'.A finite element comparative analysis was conducted on the large-diameter reinforced concrete frame and the ordinary diameter reinforced concrete frame,and the results showed that the average difference in inter-story drift and inter-story shear force between each story was-5.73%and-1.41%,respectively,indicating similar dynamic performance.

关 键 词：混凝土框架 大直径钢筋 装配式 拟动力试验 抗震性能 

分 类 号：TU375.4[建筑科学—结构工程]