|本期目录/Table of Contents|

[1]马天宇,刘永健,孙泽坤,等.集簇式栓钉抗剪承载力折减系数计算方法[J].建筑科学与工程学报,2022,39(05):160-171.[doi:10.19815/j.jace.2022.06029]
　MA Tian-yu,LIU Yong-jian,SUN Ze-kun,et al.Calculation Method of Shear Capacity Reduction Coefficient of Cluster Studs Connector[J].Journal of Architecture and Civil Engineering,2022,39(05):160-171.[doi:10.19815/j.jace.2022.06029]
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集簇式栓钉抗剪承载力折减系数计算方法(PDF)
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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:
160-171
栏目:
出版日期:
2022-09-30

文章信息/Info

Title:
Calculation Method of Shear Capacity Reduction Coefficient of Cluster Studs Connector
文章编号:
1673-2049(2022)05-0160-12
作者:
马天宇1,刘永健1,2,孙泽坤1,王 琨1,李 慧3
(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; 3. 西北农林科技大学 水利与建筑工程学院,陕西 杨凌 712100)
Author(s):
MA Tian-yu1, LIU Yong-jian1,2, SUN Ze-kun1, WANG Kun1, LI Hui3
(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. College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China)
关键词:
桥梁工程;  集簇式栓钉;  群钉效应;  抗剪承载力折减系数
Keywords:
bridge engineering;  cluster studs connector;  group studs effect;  shear capacity reduction coefficient
分类号:
TU311
DOI:
10.19815/j.jace.2022.06029
文献标志码:
A
摘要:
为给装配式钢-混组合结构梁桥集簇式栓钉抗剪连接件的设计提供参考,深入研究了集簇式栓钉抗剪连接件的受力特性。采用ABAQUS有限元软件建立推出试验有限元模型,对群钉效应及其主要影响因素进行了有限元参数化分析,并给出综合考虑混凝土强度、栓钉排数、栓钉纵向间距影响的集簇式栓钉连接件抗剪承载力折减系数计算公式。结果表明:受到群钉效应的影响,集簇式栓钉连接件的单钉平均抗剪承载力有较大程度的折减并且钉群受力呈现明显的不均匀性; 随着混凝土强度的提高,φ22×200栓钉连接件抗剪承载力、抗剪刚度逐渐增大; 当栓钉排数从3排增加至7排时,群钉的单钉平均抗剪承载力以及栓钉抗剪承载力折减系数逐渐降低,同时钉群受力的不均匀程度大幅提升; 当栓钉纵向间距由4d(d为栓钉直径)增加至8d时,群钉的单钉平均抗剪承载力以及栓钉抗剪承载力折减系数呈现增大趋势; 提出的集簇式栓钉连接件抗剪承载力折减系数计算公式计算值与有限元值吻合良好,可以为装配式钢-混组合结构梁桥集簇式栓钉抗剪连接件的设计提供理论依据。
Abstract:
In order to provide a reference for the design of cluster studs connector of prefabricated steel-concrete composite girder bridges, the mechanical characteristics of cluster studs connector were studied in depth. The finite element models of the test were established by ABAQUS software and the finite element parametric analysis was carried out to study the group studs effect and its main influencing factors. Then, the calculation formula for the shear capacity reduction coefficient of cluster studs connector was proposed, which considered the influence caused by the concrete strength, the number of stud rows and the space between the stud layers. The results show that the single stud average shear capacity of cluster studs connector reduces sharply and the force of group studs shows obvious inhomogeneity. With the increase of the concrete strength, the shear capacity and shear stiffness of the φ22×200 stud connector increase. When the number of stud rows increases from 3 to 7, the single stud average shear capacity of group studs and shear capacity reduction coefficient of stud decrease, while the unevenness of the force of group studs increases greatly. When the space between the stud layers is from 4d to 8d(d is the diameter of stud), the single stud average shear capacity of group studs and shear capacity reduction coefficient of stud increase. The calculated values by the calculation formula proposed for the shear capacity reduction coefficient of cluster studs connector are in good agreement with the finite element values, which can provide a theoretical basis for the design of prefabricated steel-concrete composite girder bridges’ cluster studs connector.

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备注/Memo

备注/Memo:
收稿日期:2022-06-11
基金项目:中央高校基本科研业务费专项资金项目(300102219310)
作者简介:马天宇(1996-),男,河南商丘人,工学硕士研究生,E-mail:2020121035@chd.edu.cn。
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