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[1]王 琳,刘永健,孙立鹏.钢管混凝土桥塔加劲钢壁板PBL连接件屈曲拔出力研究[J].建筑科学与工程学报,2025,42(03):126-134.[doi:10.19815/j.jace.2024.11021]
　WANG Lin,LIU Yongjian,SUN Lipeng.Study on buckling pull-out force of PBL connectors in stiffened steel plate of concrete-filled steel tube bridge pylons[J].Journal of Architecture and Civil Engineering,2025,42(03):126-134.[doi:10.19815/j.jace.2024.11021]
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钢管混凝土桥塔加劲钢壁板PBL连接件屈曲拔出力研究(PDF)
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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03期
页码:
126-134
栏目:
桥隧工程
出版日期:
2025-05-30

文章信息/Info

Title:
Study on buckling pull-out force of PBL connectors in stiffened steel plate of concrete-filled steel tube bridge pylons
文章编号:
1673-2049(2025)03-0126-09
作者:
王 琳1,刘永健1,2,3,孙立鹏4
(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中心,陕西 西安 710064; 3. 重庆大学 土木工程学院,重庆 400044; 4. 北京工业大学 桥梁工程安全与韧性全国重点实验室,北京 100124)
Author(s):
WANG Lin1, LIU Yongjian1,2,3, SUN Lipeng4
(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; 3. School of Civil Engineering, Chongqing University, Chongqing 400044, China; 4. National Key Laboratory of Bridge Safety and Resilience, Beijing University of Technology, Beijing 100124, China)
关键词:
钢管混凝土桥塔;  PBL连接件;  加劲钢壁板;  有限元分析;  屈曲拔出力
Keywords:
concrete-filled steel tube pylon;  PBL connector;  stiffened steel plate;  finite element analysis;  buckling pull-out force
分类号:
U443
DOI:
10.19815/j.jace.2024.11021
文献标志码:
A
摘要:
为探究钢管混凝土桥塔中PBL连接件屈曲拔出力的大小及其分布规律,采用有限元法分析了混凝土强度等级、开孔钢板厚度、开孔直径、肋间宽厚比和几何初始缺陷等因素的影响。以PBL连接件在弹性阶段所受的最大屈曲拔出力为设计基础,提出了加劲钢壁板的PBL连接件屈曲拔出力计算公式及其抗拔验算方法。研究结果表明:在弹性阶段,PBL连接件在钢壁板局部屈曲作用下的屈曲拔出力随着肋间宽厚比和几何初始缺陷的增加显著增大; 当肋间宽厚比从20增至35时,屈曲拔出力增加32.5%; 当几何初始缺陷从钢壁板单元短边长度的1/500减小到1/2 000时,屈曲拔出力减小了69.4%; 混凝土强度、开孔钢板圆孔直径及开孔钢板加劲肋厚度对屈曲拔出力的影响较小; 当设计的PBL加劲钢壁板各项参数在常用工程应用参数范围内时,PBL连接件在弹性抗拔刚度下的屈曲拔出力均远小于计算所得抗拔承载力,不会发生拔出破坏,因此可不进行抗拔承载力验算。
Abstract:
In order to investigate the magnitude and distribution pattern of the pull-out force of PBL connectors in concrete-filled steel tube bridge pylons, the effects of concrete strength grade, perforated steel plate thickness, hole diameter, rib width-to-thickness ratio, and initial geometric imperfections were analyzed by finite element method. Based on the maximum pull-out force on PBL connectors in the elastic stage, a calculation formula and verification method for the pull-out force of PBL connectors in stiffened steel plates was proposed. The study results show that, in the elastic stage, the pull-out force on PBL connectors under local buckling of the steel plate significantly increases with the rib width-to-thickness ratio and initial imperfections. When the rib width-to-thickness ratio increases from 20 to 35, the pull-out force increases by 32.5%. when the initial imperfections is reduced from 1/500 to 1/2 000 of the short-side length of the steel wall panel, the pull-out force decreases by 69.4%. The influence of concrete strength, perforated steel plate hole diameter, and stiffened rib thickness on the pull-out force is relatively small. When the design parameters of the PBL stiffened steel plates are within the commonly used engineering application range, the pull-out force on the PBL connectors under elastic pull-out stiffness is much smaller than the calculated pull-out bearing capacity, thus eliminating the need for pull-out bearing capacity verification.

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相似文献/References:

备注/Memo

备注/Memo:
收稿日期:2024-11-05
基金项目:重庆市在渝院士牵头科技创新引导专项(CSTB2023YSZX-JSX0004); 国家资助博士后研究人员计划项目(GZC20230190)
作者简介:刘永健(1966-),男,工学博士,教授,博士生导师,E-mail:liuyongjian@chd.edu.cn。
Author resume: LIU Yongjian(1966-), male, PhD, Professor, E-mail: liuyongjian@chd.edu.cn.
更新日期/Last Update: 2025-06-01