|本期目录/Table of Contents|

[1]李 兵,田立明,周 博.中空夹层钢套铝管混凝土短柱轴压性能试验研究[J].建筑科学与工程学报,2023,40(06):35-44.[doi:10.19815/j.jace.2021.12082]
 LI Bing,TIAN Liming,ZHOU Bo.Experimental study on axial compression performance of concrete short columns with hollow sandwich steel jacketed aluminum tubes[J].Journal of Architecture and Civil Engineering,2023,40(06):35-44.[doi:10.19815/j.jace.2021.12082]
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中空夹层钢套铝管混凝土短柱轴压性能试验研究(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:
35-44
栏目:
建筑结构
出版日期:
2023-11-30

文章信息/Info

Title:
Experimental study on axial compression performance of concrete short columns with hollow sandwich steel jacketed aluminum tubes
文章编号:
1673-2049(2023)06-0035-10
作者:
李 兵,田立明,周 博
(沈阳建筑大学 土木工程学院,辽宁 沈阳 110168)
Author(s):
LI Bing, TIAN Liming, ZHOU Bo
(School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, Liaoning, China)
关键词:
组合结构 中空夹层钢套铝管混凝土 短柱 轴压试验 承载力计算
Keywords:
composite structure hollow sandwich steel jacketed aluminum tube concrete short column axial compression test load capacity calculation
分类号:
TU312
DOI:
10.19815/j.jace.2021.12082
文献标志码:
A
摘要:
为研究中空夹层钢套铝管混凝土短柱的轴压性能,通过改变参数的方法对8根构件开展了轴压试验,构件中空率为0.38、0.51、0.78,混凝土强度为普通混凝土C30、轻质混凝土C30,内铝合金管壁厚为5 mm和3 mm; 依据中空夹层钢管混凝土短柱的轴压承载力公式,对约束效应系数进行修正,最终得出拟合性较好的中空夹层钢套铝管混凝土短柱轴压承载力计算公式。结果表明:构件的破坏形态为跨中部或端部发生鼓曲,其中外钢管向外鼓曲,核心混凝土被压碎,内铝合金管向内凹陷; 中空率为0.78和0.51的构件较中空率为0.38的构件极限承载力分别提高29%、19%,普通混凝土构件的极限承载力相较于轻质混凝土构件提升60%; 内管壁厚为5 mm的构件相较于内管壁厚为3 mm的构件承载力提高约2%; 构件的承载力大小随着中空率的减小而增加,随着混凝土强度等级的增加而增加,随着内铝合金管壁厚的增加而增加。
Abstract:
In order to study the axial compression performance of concrete short columns with hollow sandwich steel jacketed aluminum tubes, an axial compression test on eight members by varying the parameters was carried out. The axial compression test was conducted on components with hollow ratios of 0.38, 0.51, 0.78, concrete strength of ordinary concrete C30 and lightweight concrete C30, and inner aluminum alloy tube thickness of 5 mm and 3 mm. Based on the axial compression load capacity formula of the concrete short column of hollow sandwich steel tube, the restraint effect coefficient in the formula was modified, and finally a better fitting formula for the calculation of the axial compression load capacity of the concrete short column with hollow sandwich steel jacketed aluminum tube was derived. The results show that the failure mode of the component is bulging at the middle or end of the span, with the outer steel pipe bulging outward, the core concrete being crushed, and the inner aluminum alloy tube sinking inward. The ultimate load capacity of the members with hollow ratio of 0.78 and 0.51 is increased by 29% and 19% respectively compared with the members with hollow ratio of 0.38, and the ultimate load capacity of ordinary concrete members is increased by 60% compared with that of lightweight concrete members. The load capacity of members with inner pipe wall thickness of 5 mm is increased by about 2% compared with that of members with inner pipe wall thickness of 3 mm. The load bearing capacity of the member increases with the decrease of the hollow ratio, the increase of the concrete strength grade and the increase of the inner aluminum alloy tube thickness.

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相似文献/References:

备注/Memo

备注/Memo:
收稿日期:2022-12-20
基金项目:国家自然科学基金项目(52027811); 辽宁省重点研发计划项目(2019JH8/10100099);
沈阳市科技计划项目(20-206-4-13); 辽宁省教育厅科学研究经费项目(LJKZ0568)
作者简介:李 兵(1974-),男,工学博士,教授,博士生导师,E-mail:bingleesy@163.com。
更新日期/Last Update: 2023-12-01