[1]陈伟宏,王晨阳,吴胜豪,等.PC框架节点在地震作用下的破坏模式研究[J].地震工程与工程振动,2020,40(03):078-84.[doi:10.13197/j.eeev.2020.03.78.chenwh.008]
 CHEN Weihong,WANG Chenyang,WU Shenghao,et al.Study on failure mode of PC frame joints under earthquake[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2020,40(03):078-84.[doi:10.13197/j.eeev.2020.03.78.chenwh.008]
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PC框架节点在地震作用下的破坏模式研究
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《地震工程与工程振动》[ISSN:/CN:]

卷:
40
期数:
2020年03
页码:
078-84
栏目:
论文
出版日期:
2020-06-30

文章信息/Info

Title:
Study on failure mode of PC frame joints under earthquake
作者:
陈伟宏1 王晨阳1 吴胜豪1 崔双双2
1. 福州大学 土木工程学院, 福建 福州 350108;
2. 福建工程学院 土木工程学院, 福建 福州 350118
Author(s):
CHEN Weihong1 WANG Chenyang1 WU Shenghao1 CUI Shuangshuang2
1. College of Civil Engineering, Fuzhou University, Fuzhou 350108, China;
2. College of Civil Engineering, Fujian University of Technology, Fuzhou 350118, China
关键词:
装配式PC节点抗震性能破坏模式拟静力试验
Keywords:
prefabricatedPC jointseismic performancefailure modequasi-static test
分类号:
TU352.1
DOI:
10.13197/j.eeev.2020.03.78.chenwh.008
摘要:
为研究PC框架节点在地震荷载作用下的破坏模式,设计了2个足尺PC框架梁柱节点,并对其进行拟静力试验。获得了试件破坏形态、极限承载力、滞回曲线和裂缝开展情况等。发现梁叠合面处未出现裂缝,沿梁柱叠合面出现竖向裂缝;轴压比为0.17的试件破坏时,柱叠合面处产生水平裂缝,且节点核心区破坏程度大于轴压比为0.34的试件,轴压比0.34的试件柱叠合面未开裂。研究了2个试件位移延性、承载力退化系数等抗震性能指标,结果表明:PC节点滞回曲线饱满,2个试件延性系数分别为6.56和6.45,承载力退化系数均大于0.85,具有较高延性水平和较好抗震性能。
Abstract:
To study the failure modes of PC structures under seismic loads, two full-scale PC frame beam-column joints were designed and conducted quasi-static tests. The failure modes, ultimate bearing capacity, hysteretic curve and crack development of the specimens were obtained. It was found that there were no cracks at the interface of beam-beam and vertical cracks along the interface of beam-column. when the loading was ended, a horizontal crack occurred at the column interface of the specimen with 0.17 axial compression ratio. And the damage degree of the joint core was greater than that of the specimen with 0.34 axial compression ratio. The seismic performance indexes of displacement ductility and bearing capacity degradation coefficient of two specimens were studied. The results showed that the hysteretic curves of the two specimens were plump, the ductility coefficients of the two specimens are 6.56 and 6.45 respectively, and the degradation coefficients of the bearing capacity were greater than 0.85, all of which had higher ductility level and better seismic performance.

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备注/Memo

备注/Memo:
收稿日期:2019-12-10;改回日期:2020-02-12。
基金项目:国家自然科学基金项目(51508099);福州市科技计划项目(2018-G-52);福建省科技厅自然科学基金项目(2017J01672)
作者简介:陈伟宏(1980-),男,副研究员,博士,主要从事结构抗震研究.E-mail:chenweihong1980@163.com
通讯作者:崔双双(1983-),女,副教授,博士,主要从事结构倒塌研究.E-mail:cshuangshuang@163.com
更新日期/Last Update: 1900-01-01