[1]史庆轩,盛广彦,戎翀,等.钢桁架(ST)约束混凝土组合柱抗震性能研究[J].世界地震工程,2020,(02):062-72.
 SHI Qingxuan,SHENG Guangyan,RONG Chong,et al.Research on seismic performance of steel-truss (ST) confined concrete composite column[J].,2020,(02):062-72.
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钢桁架(ST)约束混凝土组合柱抗震性能研究
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《世界地震工程》[ISSN:/CN:]

卷:
期数:
2020年02期
页码:
062-72
栏目:
出版日期:
2020-04-10

文章信息/Info

Title:
Research on seismic performance of steel-truss (ST) confined concrete composite column
作者:
史庆轩12 盛广彦1 戎翀1 陈云枭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
Author(s):
SHI Qingxuan12 SHENG Guangyan1 RONG Chong1 CHEN Yunxiao1
1. School of Civil Engineering, Xi’an University of Architecture & Technology, Xi’an 710055, China;
2. Key Lab of Structural Engineering and Earthquake Resistance, Ministry of Education(XAUAT), Xi’an 710055, China
关键词:
钢桁架约束混凝土组合柱抗震性能有限元分析位移延性系数轴压比限值
Keywords:
steel truss confined concrete composite columnseismic performancefinite element analysisdisplacement ductility coefficientlimit value of axial compression ratio
分类号:
TU398
摘要:
目前,组合柱在建筑结构中进行了广泛应用和研究,研究表明:截面形式对组合柱的抗震性能有很大影响。首先,对钢桁架(ST)约束混凝土组合柱进行了试验研究。并在此基础上,利用有限元软件ABAQUS建立了数值分析模型;其次,基于数值分析模型,分析了组合柱中各部件的应力应变状态,分别考察了轴压比、缀板排列方式、体积配箍率、角钢肢宽与肢厚等因素对柱抗震性能的影响;最后,给出了组合柱在不同抗震等级下轴压比限值的建议值,可为后续组合柱的研究提供参考。研究表明:随着轴压比的增大,组合柱的延性变差,承载力先增大后减小;合理的缀板排列方式可有效抑制角钢的局部屈曲;随着体积配箍率的增大,组合柱的承载力有一定提升,延性提高较为显著;随着角钢肢宽和肢厚的增加,组合柱的承载力和延性均有显著提升。
Abstract:
The composite columns have been widely applied in building structures and studied in the existing research, which shows that the cross-sectional form has a great influence on the seismic performance of composite columns. Firstly, this paper presents the experimental study on the steel truss (ST) confined concrete columns. Then a numerical analysis model was established by finite element software ABAQUS based on the experiment. Using the proposed finite element model, the stress states of various components of this columns were analyzed. The effects of the parameters including the axial compression ratio, arrangement of the batten plates, volume stirrup ratio, angle steel limb width and limb thickness on the seismic performance of the column were examined. Finally, Finally, the suggested values of the axial compression ratio limits under different seismic grades were given, which can provide references for the future research of ST confined concrete columns. The following conclusions can be drawn from the analysis:with the increasing of the axial compression ratio, the ductility of composite columns decreases, and the bearing capacity increases first and then decreases; reasonable arrangement of battens can effectively restrain the local buckling of angle steel; with the increase of volume stirrup ratio, the bearing capacity and ductility of the composite columns increase; with the increasing of limb width and limb thickness of angle steel, the bearing capacity and ductility of composite columns increase significantly.

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备注/Memo

备注/Memo:
收稿日期:2019-10-23;改回日期:2019-12-15。
基金项目:十三五国家重点研发计划项目(2017YFC0703406);国家自然科学基金资助项目(51878540)
作者简介:史庆轩(1963-),男,教授,博士,主要从事钢与混凝土组合结构研究.E-mail:shiqx@xauat.edu.cn
更新日期/Last Update: 1900-01-01