建筑结构学报2025，Vol.46Issue(1)：19-29,11.DOI:10.14006/j.jzjgxb.2023.0362
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
摘要
Abstract
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Key words
RC frame/large-diameter rebar/prefabrication/pseudo-dynamic test/seismic performance分类
土木建筑引用本文复制引用
张旭乔,肖绪文,朱彤,张勇波,张磊,张志超,丛峻,武朝军,李罡..大直径钢筋装配式混凝土足尺框架拟动力试验研究[J].建筑结构学报,2025,46(1):19-29,11.基金项目
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). （CSCEC-2020-Z-18）
