|本期目录/Table of Contents|

[1]刘 坚,彭林苗,陈盼盼,等.圆钢管约束型钢再生混凝土短柱抗震性能[J].建筑科学与工程学报,2023,40(06):27-34.[doi:10.19815/j.jace.2022.01078]
 LIU Jian,PENG Linmiao,CHEN Panpan,et al.Seismic performance of circular steel tube confined steel reinforced recycled concrete short columns[J].Journal of Architecture and Civil Engineering,2023,40(06):27-34.[doi:10.19815/j.jace.2022.01078]
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圆钢管约束型钢再生混凝土短柱抗震性能(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
40卷
期数:
2023年06期
页码:
27-34
栏目:
建筑结构
出版日期:
2023-11-30

文章信息/Info

Title:
Seismic performance of circular steel tube confined steel reinforced recycled concrete short columns
文章编号:
1673-2049(2023)06-0027-08
作者:
刘 坚1,2,彭林苗1,陈盼盼1,刘长江1,2,任 达1,2,陈 原1,2,肖海鹏1,招 渝1,杨勤鹏1
(1. 广州大学 土木工程学院,广东 广州 510006; 2. 广州大学 广东省复杂钢结构工程技术研究中心,广东 广州 510006)
Author(s):
LIU Jian1,2, PENG Linmiao1, CHEN Panpan1, LIU Changjiang1,2, REN Da1,2, CHEN Yuan1,2, XIAO Haipeng1, ZHAO Yu1, YANG Qinpeng1
(1. College of Civil Engineering, Guangzhou University, Guangzhou 510006, Guangdong, China; 2. Guangdong Engineering Technology Research Center for Complex Steel Structures, Guangzhou University, Guangzhou 510006, Guangdong, China)
关键词:
圆钢管型钢混凝土 再生混凝土柱 径厚比 再生粗骨料 取代率 轴压比 抗震性能
Keywords:
circle steel tube steel reinforced concrete recycled concrete column diameter-thickness ratio recycled coarse aggregate replacement rate axial compression ratio seismic performance
分类号:
TU528
DOI:
10.19815/j.jace.2022.01078
文献标志码:
A
摘要:
针对圆钢管约束型钢再生混凝土短柱的抗震性能进行研究,在验证了分析模型合理性的前提下,考虑了圆钢管径厚比、再生粗骨料取代率和轴压比等设计参数对试件力学性能的影响规律,获取了试件滞回曲线、骨架曲线、延性系数、等效黏滞阻尼系数等抗震性能指标和试件的峰值承载力,并与已有试验进行了对比分析。结果表明:在再生混凝土取代率、轴压比、含钢率等参数基本相同时,圆钢管约束型钢再生混凝土短柱比型钢再生混凝土柱和圆钢管型钢再生混凝土柱表现出更好的变形和耗能能力; 再生粗骨料取代率对滞回曲线等抗震性能指标影响不大,可基本满足工程抗震要求,并可广泛应用于工程的承重结构中; 在取代率和轴压比相同时,随着径厚比的增大,试件弹性阶段初始刚度、峰值承载力和耗能能力逐渐下降,但延性会有一定幅度的提升,延性变形能力可提高30%~40%; 在取代率和径厚比相同时,随着轴压比的增大,试件的峰值承载力和耗能能力变化不大,延性越来越差。
Abstract:
The seismic performance of circular steel tube confined steel reinforced recycled concrete short columns was studied. On the premise of verifying the rationality of the analysis model, the influence of design parameters such as diameter-thickness ratio of circular steel tube, replacement rate of recycled coarse aggregate and axial compression ratio on the mechanical properties of the specimens was considered. The seismic performance indexes such as hysteresis curve, skeleton curve, ductility coefficient, equivalent viscous damping coefficient and the peak bearing capacity of the specimens were obtained and compared with the existing tests. The results show that when the parameters such as the replacement ratio of recycled concrete, axial compression ratio and steel ratio are basically the same, the circular steel tube confined steel recycled concrete short column shows better deformation and energy dissipation capacity than the steel recycled concrete column and the circular steel tube steel recycled concrete column. The replacement rate of recycled coarse aggregate has little effect on the seismic performance index such as hysteresis curve, which can basically meet the seismic requirements of the project and can be widely used in the bearing structure of the project. When the replacement rate and axial compression ratio are the same, with the increase of diameter-thickness ratio, the initial stiffness, peak bearing capacity and energy dissipation capacity of the elastic stage of the specimen gradually decrease, but the ductility will be improved to a certain extent, and the ductility deformation capacity can be increased by 30%-40%. When the replacement rate and the diameter-thickness ratio are the same, with the increase of the axial compression ratio, the peak bearing capacity and energy dissipation capacity of the specimens do not change much, and the ductility is getting worse and worse.

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相似文献/References:

备注/Memo

备注/Memo:
收稿日期:2023-02-22
基金项目:国家自然科学基金项目(51678168); 广建装配式建筑成套技术研究项目(19C00001); 广东省自然科学基金项目(2017A030313267); 广州市科技计划项目(201607010107)
作者简介:刘 坚(1964-),男,工学博士,教授,博士生导师,E-mail:787196372@qq.com。
更新日期/Last Update: 2023-12-01