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[1]潘启仁,陈云峰,韩云,等.考虑环境温度的钢管混凝土轴压承载力试验与计算方法研究*[J].中国安全生产科学技术,2024,20(12):97-104.[doi:10.11731/j.issn.1673-193x.2024.12.013]
　PAN Qiren,CHEN Yunfeng,HAN Yun,et al.Study on test and calculation method of axial compression bearing capacity of concrete filled steel tube considering ambient temperature[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2024,20(12):97-104.[doi:10.11731/j.issn.1673-193x.2024.12.013]
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考虑环境温度的钢管混凝土轴压承载力试验与计算方法研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
20
期数:
2024年12期
页码:
97-104
栏目:
职业安全卫生管理与技术
出版日期:
2024-12-30

文章信息/Info

Title:
Study on test and calculation method of axial compression bearing capacity of concrete filled steel tube considering ambient temperature
文章编号:
1673-193X(2024)-12-0097-08
作者:
潘启仁; 陈云峰; 韩云; 王力; 李海国; 刘彪
(1.兰州交通大学 土木工程学院，甘肃 兰州 730070；
2.中国铁路兰州局集团公司，甘肃 兰州 730000；
3.中铁北京工程局集团第六工程有限公司，辽宁 沈阳 110000)
Author(s):
PAN Qiren;  CHEN Yunfeng;  HAN Yun;  WANG Li;  LI Haiguo;  LIU Biao
(1.School of Civil Engineering,Lanzhou Jiaotong University,Lanzhou Gansu 730070,China;
2.China Railway Lanzhou Group Co.,Ltd.,Lanzhou Gansu 730000,China;
3.China Railway Beijing Engineering Bureau Group Sixth Engineering Co. Ltd，Shenyang Liaoning 110000，China)
关键词:
钢管混凝土; 承载力; 环境温度; 解析理论; 极限平衡法
Keywords:
concrete filled steel tube (CFST);  bearing capacity;  ambient temperature;  analytical theory;  limit equilibrium method
分类号:
X947
DOI:
10.11731/j.issn.1673-193x.2024.12.013
文献标志码:
A
摘要:
为了研究环境温度对钢管混凝土轴压承载力的影响特征。开展不同环境温度下钢管混凝土短柱轴压承载力试验，探究环境温度对钢管混凝土轴压承载力的影响规律；基于极限平衡法，推导考虑环境温度影响的钢管混凝土轴压承载力理论计算公式，并通过试验验证其精确性。研究结果表明：温度变化对钢管混凝土柱承载力影响显著，环境温度由20 ℃降至-40 ℃时，试件承载力最大提升了34.3％；所提考虑环境温度影响的钢管混凝土轴压承载力理论公式计算值与试验值相对误差小于10%，具有较高的准确性。研究结果可为高寒大温差地区钢管约束混凝土结构设计提供理论参考。
Abstract:
In order to study the influence of ambient temperature on the axial compression bearing capacity of concrete filled steel tube (CFST),the axial compression bearing capacity test of CFST short columns under different ambient temperatures was carried out to explore the influence of ambient temperature on the axial compression bearing capacity of CFST.Based on the limit equilibrium method,the theoretical calculation formula of axial compression bearing capacity of CFST considering the influence of ambient temperature was derived,and its accuracy was verified by experiments.The results show that the temperature change has significant influence on the bearing capacity of CFST columns.When the temperature decreases from 20 ℃ to -40 ℃,the bearing capacity of the specimen increases by 34.3% at most.The relative error between the calculated value of theoretical formula and the experimental value about the axial compression bearing capacity of CFST considering the influence of ambient temperature is less than 10%,which has high accuracy.The research results can provide a theoretical basis for the design of steel tube confined concrete structures in alpine regions with large temperature difference.

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备注/Memo

备注/Memo:
收稿日期： 2024-06-24
* 基金项目： 甘肃省联合科研基金重点项目（24JRRA869）；兰州铁路局集团公司科技研究开发计划项目（LZJKY2024041-1）
作者简介： 潘启仁，硕士研究生，主要研究方向为组合结构理论。
通信作者： 王力，博士，副教授，主要研究方向为组合结构桥梁理论。
更新日期/Last Update: 2024-12-28