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[1]王海涛,刘永健,孙立鹏.基于壁板屈曲后强度的矩形钢管混凝土偏压承载力计算方法[J].建筑科学与工程学报,2022,39(05):41-52.[doi:10.19815/j.jace.2022.06027]
　WANG Hai-tao,LIU Yong-jian,SUN Li-peng.Calculation Method of Eccentric Bearing Capacity of RCFST Based on Post-buckling Strength of Panels[J].Journal of Architecture and Civil Engineering,2022,39(05):41-52.[doi:10.19815/j.jace.2022.06027]
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
39卷
期数:
2022年05期
页码:
41-52
栏目:
结构工程
出版日期:
2022-09-30

文章信息/Info

Title:
Calculation Method of Eccentric Bearing Capacity of RCFST Based on Post-buckling Strength of Panels
文章编号:
1673-2049(2022)05-0041-12
作者:
王海涛1,刘永健1,2,孙立鹏1
(1. 长安大学 公路学院,陕西 西安 710064; 2. 长安大学 公路大型结构安全教育部工程研究中心,陕西 西安 710064)
Author(s):
WANG Hai-tao1, LIU Yong-jian1,2, SUN Li-peng1
(1. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Research Center of Highway Large Structure Engineering on Safety of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China)
关键词:
矩形钢管混凝土;  单侧约束板;  弹性屈曲系数;  有效宽度法;  偏压;  大宽厚比
Keywords:
rectangle concrete-filled steel tube;  unilateral restrained plate;  elastic buckling coefficient;  effective width method;  eccentric compress;  large width-to-thickness ratio
分类号:
TU398
DOI:
10.19815/j.jace.2022.06027
文献标志码:
A
摘要:
为了准确计算大宽厚比矩形钢管混凝土短柱偏压承载力,通过有限元方法对非均匀受压单侧约束平板的屈曲性能进行了研究,给出了该类板件的弹性屈曲系数计算公式。以此为基础,结合有效宽度法,提出了基于壁板屈曲后强度的矩形钢管混凝土偏压承载力计算方法。为验证所提计算方法的准确性,建立了大宽厚比钢管混凝土短柱偏压试验数据库,并将该计算方法与各规范的计算方法进行了对比。结果表明:提出的两种大宽厚比矩形钢管混凝土偏压承载力计算方法具有较高的计算精度,计算结果与试验结果吻合良好,其中方法二能够准确地评估构件的偏压承载力,可用于大宽厚比矩形钢管混凝土短柱偏压承载力计算中。
Abstract:
In order to accurately calculate the eccentric compress strength of rectangular concrete-filled steel tube(RCFST)short columns with large width-to-thickness ratio, the buckling performance of non-uniformly compressed unilaterally restrained plates was studied by the finite element method, and the calculation formula of the elastic buckling coefficient of this type of plate was given. Based on this, combined with the effective width method, a calculation method of eccentric bearing capacity of RCFST based on post-buckling strength of panels was proposed. In order to verify the accuracy of the calculation method, the test database of RCFST short columns with large width-to-thickness ratio was established, and the new calculation method was compared with the calculation methods of various codes. The results show that the two proposed methods for calculating the eccentric bearing capacity of RCFST with large width-to-thickness ratio have high calculation accuracy, and the calculation results are in good agreement with the test results. The second method can accurately evaluate the eccentric bearing capacity of components, and can be used in the calculation of eccentric bearing capacity of RCFST short columns with large width-to-thickness ratio.

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相似文献/References:

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[3]刘永健,李 慧,张 宁,等.PBL加劲型矩形钢管混凝土界面粘结-滑移性能[J].建筑科学与工程学报,2015,32(05):1.
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备注/Memo

备注/Memo:
收稿日期:2022-06-20
基金项目:国家自然科学基金项目(51778058)
作者简介:王海涛(1997-),男,山东淄博人,工学硕士研究生,E-mail:3489281946@qq.com。
通信作者:刘永健(1966-),男,江西玉山人,教授,博士研究生导师,工学博士,E-mail:liuyongjian@chd.edu.cn。
更新日期/Last Update: 2022-09-30