|本期目录/Table of Contents|

[1]马腾飞,陈志华,杜颜胜.L形方钢管再生混凝土组合异形柱偏压承载力计算方法[J].建筑科学与工程学报,2025,42(01):82-89.[doi:10.19815/j.jace.2022.07095]
　MA Tengfei,CHEN Zhihua,DU Yansheng.Calculation method of eccentric load-bearing capacity of L-shaped column composed of recycled aggregate concrete-filled square steel tube[J].Journal of Architecture and Civil Engineering,2025,42(01):82-89.[doi:10.19815/j.jace.2022.07095]
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
42卷
期数:
2025年01期
页码:
82-89
栏目:
建筑结构
出版日期:
2025-01-20

文章信息/Info

Title:
Calculation method of eccentric load-bearing capacity of L-shaped column composed of recycled aggregate concrete-filled square steel tube
文章编号:
1673-2049(2025)01-0082-08
作者:
马腾飞1,2,3,陈志华1,杜颜胜1
(1. 天津大学 建筑工程学院,天津 300072; 2. 北华航天工业学院 建筑工程学院,河北 廊坊 065000; 3. 河北省建筑保温与结构一体化技术创新中心,河北 廊坊 065000)
Author(s):
MA Tengfei1,2,3, CHEN Zhihua1, DU Yansheng1
(1. School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2. Department of Civil Engineering, North China Institute of Aerospace Engineering, Langfang 065000, Hebei, China; 3. Technical Innovation Center of Building Insulation and Structure Integration in Hebei Province, Langfang 065000, Hebei, China)
关键词:
方钢管混凝土柱;  L形异形柱;  再生混凝土;  偏压承载力;  计算方法
Keywords:
concrete-filled square steel tube column;  L-shaped column;  recycled concrete;  eccentric compression bearing capacity;  calculation method
分类号:
TU398
DOI:
10.19815/j.jace.2022.07095
文献标志码:
A
摘要:
基于叠加原理,在《矩形钢管混凝土组合异形柱技术规程》提供的理论计算公式基础上,研究了L形方钢管再生混凝土组合异形柱偏压承载力计算方法。在考虑再生混凝土有效约束面积影响的基础上,提出了L形方钢管再生混凝土组合异形柱偏压承载力计算公式,绘制出轴力-弯矩关系曲线。结果表明:通过引入钢管对内填再生混凝土的约束效应系数,考虑钢管对不同粗骨料取代率再生混凝土的有效约束作用,并根据约束强弱将钢管对内填再生混凝土的约束区域进行划分,可得到再生混凝土的有效约束面积; 通过与试验及数值模拟结果对比,验证了L形方钢管再生混凝土组合异形柱偏压承载力计算公式的有效性,该公式可用于预测L形方钢管再生混凝土组合异形柱的偏压承载力,轴力-弯矩关系曲线可较为准确且安全地预测试件的承载力。
Abstract:
According to the superposition principle, the calculation method of eccentric compression bearing capacity of L-shaped column composed of recycled aggregate concrete-filled square steel tube(L-RACFST)was studied based on the theoretical calculation formula provided by the Technical Specification for Special-shaped Column Structure Composed of Concrete-filled Rectangular Steel Tubes. Considering the effect of recycled concrete effective restraint area, the calculation formula of eccentric bearing capacity of the L-RACFST was put forward, and the axial force-bending moment (N-M) relationship curve was drawn. The results show that by introducing the restraint influence coefficient of the steel tube on the recycled coarse aggregate(RCA), considering the effective restraint effect of the steel tube on the recycled concrete with different RCA replacement ratio, and dividing the restraint area of steel tube on RAC according to the constraint strength, the effective restraint area of recycled concrete can be obtained. By comparing with the experimental and numerical simulation results, the validity of the calculation formula of the eccentric compression bearing capacity of the L-RACFST is verified. The formula can be used to predict the eccentric compression bearing capacity of the L-RACFST, and the N-M relationship curve can predict the bearing capacity of the specimen more accurately and safely.

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相似文献/References:

[1]徐 嫚,梁思雨,张力滨,等.方钢管混凝土柱-钢梁半刚性节点参数分析[J].建筑科学与工程学报,2017,34(04):72.
　XU Man,LIANG Si-yu,ZHANG Li-bin,et al.Parameter Analysis on Concrete-filled Square Steel Tubular Column-steel Beam Semi-rigid Connection[J].Journal of Architecture and Civil Engineering,2017,34(01):72.
[2]周天华,聂少锋,郭新艳.削弱梁端的方钢管混凝土柱-钢梁框架结构静力弹塑性分析[J].建筑科学与工程学报,2009,26(01):84.
　ZHOU Tian-hua,NIE Shao-feng,GUO Xin-yan.Static Elasto-plastic Analysis of Concrete-filled Square Tubular Column to Steel Beam Frame Structure with Reduced Beam Section[J].Journal of Architecture and Civil Engineering,2009,26(01):84.
[3]吴 波,王 辉,刘晓珠.内置高强角钢的方钢管混凝土柱偏压性能试验[J].建筑科学与工程学报,2021,38(02):16.[doi:10.19815/j.jace.2021.02023]
　WU Bo,WANG Hui,LIU Xiao-zhu.Experiment on Eccentric Compressive Behaviors of Square CFST Columns with Built-in High-strength Steel Angles[J].Journal of Architecture and Civil Engineering,2021,38(01):16.[doi:10.19815/j.jace.2021.02023]

备注/Memo

备注/Memo:
收稿日期:2023-07-05 投稿网址:http://jace.chd.edu.cn
基金项目:国家重点研发计划项目(2019YFD1101005); 河北省高等学校科学技术研究项目(QN2021003); 北华航天工业学院科研基金项目(ZD-2022-05); 中央引导地方科技发展资金项目(226Z1201G); 河北省高等学校科学技术研究项目青年拔尖人才项目(BJ2019059)
作者简介:马腾飞(1987-),女,工学博士研究生,讲师,E-mail:mtf@nciae.edu.cn。
通信作者:杜颜胜(1989-),男,工学博士,副研究员,E-mail:duys@tju.edu.cn。Author resumes: MA Tengfei(1987-), female, doctoral student, assistant professor, E-mail: mtf@nciae.edu.cn; DU Yansheng(1989-), male, PhD, associate research fellow, E-mail: duys@tju.edu.cn.
更新日期/Last Update: 2025-01-20