|Table of Contents|

Calculation Method of Shear Capacity Reduction Coefficient of Cluster Studs Connector(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2022年05期
Page:
160-171
Research Field:
Publishing date:

Info

Title:
Calculation Method of Shear Capacity Reduction Coefficient of Cluster Studs Connector
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)
Keywords:
bridge engineering;  cluster studs connector;  group studs effect;  shear capacity reduction coefficient
PACS:
TU311
DOI:
10.19815/j.jace.2022.06029
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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Last Update: 2022-09-30