土木工程学报  2020, Vol. 53 Issue (2): 1-11    
  结构工程 本期目录 | 过刊浏览 | 高级检索 |
型钢混凝土异形柱损伤行为及性能量化指标研究
薛建阳1,2 周超锋1,3 刘祖强1,2 杜振宇1
1. 西安建筑科技大学土木工程学院,陕西西安 710055; 2. 西安建筑科技大学结构工程与
抗震教育部重点实验室, 陕西西安 710055;3. 河南工业大学,河南郑州 450001
Research on damage behavior and quantitative indexes for #br# steel reinforced concrete column with irregular section
Xue Jianyang1,2 Zhou Chaofeng1,3 Liu Zuqiang1,2 Du Zhenyu1
1. College of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China;
2. Key Lab of Structural Engineering and Earthquake Resistance of the Ministry of Education, Xi’an University of Architecture
and Technology, Xi’an 710055, China;3. Henan University of Technology, Zhengzhou 450001, China
全文: PDF (19146 KB)   HTML (1 KB) 
输出: BibTeX | EndNote (RIS)      
摘要 为研究型钢混凝土异形柱在不同形式的水平荷载作用下的损伤行为,采用“建研式”加载方式对15根SRC异形柱(9根T形柱、3根L形柱、3根十形柱)进行试验研究,考虑加载制度、轴压比、配钢率等因素对其损伤性能的影响,观察其破坏形态,分析荷载位移(P-Δ)曲线特性。结果表明:试件主要表现为弯曲破坏并伴随着黏结破坏特征;低周反复荷载作用下荷载-位移曲线饱满对称,无明显“捏缩”现象;试件延性系数介于4.16~9.44,具有良好的变形能力,尤其单调加载时试件延性最好。基于试验,通过考虑混凝土开裂、加载路径以及有效耗能对试件损伤的影响,建立基于变形和能量的损伤模型,并对其各特征点处的损伤程度进行评估。同时,将SRC异形柱的抗震性能水准划分为正常使用、基本正常使用、暂时使用、修复后使用、接近严重破坏等5个水准。对41根SRC异形柱各特征点的位移角进行频次统计,建立SRC异形柱在不同性能水平下的位移角量化指标以及相对应的损伤指数阈值,以期为SRC异形柱结构基于性能的抗震设计和震后修缮加固提供依据。
服务
把本文推荐给朋友
加入我的书架
加入引用管理器
E-mail Alert
RSS
作者相关文章
薛建阳 周超锋 刘祖强 杜振宇
关键词 型钢混凝土异形柱损伤模型位移角量化指标    
Abstract: In order to study the damage behavior of steel reinforced concrete (SRC) columns with irregular section under different horizontal loadings, the experiment research was carried out on 15 SRC with irregular section columns, including 9 T-shaped section columns, 3 L-shaped section columns and 3 +shaped section columns.The loading scheme by parallel four-connecting rods device was used, in which the axial compression ratio and steel ratio were taken as the analysis parameters.The failure modes of specimens were observed and the loading-displacement (P-Δ) curve were analyzed.The test results indicate that the specimens mainly show bending failure accompanied by bond failure.The loading-displacement curve is full and symmetrical without obvious pinch under the low cyclic reversed loading.The ductility coefficient ranges from 4.16 to 9.44, indicating that these specimens have excellent deformation ability, especially the specimen under the monotonous loading. Based on the experiment results, a damage model with double parameter was proposed by considering the effect of concrete cracking, loading path and effective energy consumption on the damage, and the damage index at each characteristic point was calculated.Meanwhile, the seismic performance level for SRC with irregular section column was divided into five levels, namely normal use, basically normal use, temporary use, post-repair use, near severe damage.According to the statistical analysis of displacement ratio at each characteristic point for 41 SRC with irregular section columns, the quantitative index of displacement ratio and corresponding limitvalue of damage index are established for different seismic performance levels.The research results can provide reference for the design based on the seismic performance and the post-earthquake repair.
Key wordssteel reinforced concrete    irregular section column    damage model    displacement ratio    quantitative index
    
引用本文:   
薛建阳 周超锋 刘祖强 杜振宇. 型钢混凝土异形柱损伤行为及性能量化指标研究[J]. 土木工程学报, 2020, 53(2): 1-11.
Xue Jianyang Zhou Chaofeng Liu Zuqiang Du Zhenyu. Research on damage behavior and quantitative indexes for #br# steel reinforced concrete column with irregular section. 土木工程学报, 2020, 53(2): 1-11.
链接本文:  
http://manu36.magtech.com.cn/Jwk_tmgcxb/CN/     或     http://manu36.magtech.com.cn/Jwk_tmgcxb/CN/Y2020/V53/I2/1
主办:中国土木工程学会 地址:北京三里河路9号建设部内

《土木工程学报》杂志社有限公司 版权所有 · 京ICP备05023187号
地址:北京三里河路9号建设部内 邮政编码:100835 电话/传真:010-57811488  E-mail:tumuxuebao@ccej.net