Mechanical Analysis of the Influence of Rubber-Sleeved Stud Connector on the Steel-Concrete Composite Girder

被引：0
|
作者：
Su Q. [1 ,2 ]
Su H. [1 ]
Wu F. [1 ]
机构：
[1] College of Civil Engineering, Tongji University, Shanghai
[2] Shanghai Engineering Research Center of High Performance Composite Bridges, Shanghai
来源：
Tongji Daxue Xuebao/Journal of Tongji University | 2021年 / 49卷 / 08期
关键词：
Composite girder; Connector; Finite element analysis; Rubber sleeve; Stud; Test;
D O I：
10.11908/j.issn.0253-374x.21168
中图分类号：
学科分类号：
摘要：
To study the mechanical properties of the rubber-sleeved stud connector and its influence on the steel-concrete composite girder, 5 groups of 15 push-out test specimens are designed and fabricated. The mechanical behavior of the rubber-sleeved stud connector is revealed by using the static loading test while the influence of the rubber-sleeved stud connector on the steel-concrete composite girder is analyzed by using the FEM(finiti element method) models. The test and finite element analysis results show that the rubber-sleeved stud connector helps to reduce the shear stiffness of the push-out test specimens without decreasing the carrying capacity. Meanwhile, the rubber sleeve has little impact on the mid-span deflection and the stress in the steel girder but magnificently decreases the stress in the concrete slab at the mid-support. For composite bridges using shear connectors with a diameter of 22 mm and 19mm, the tensile stress in concrete slab decreases by 26 % and 13 % respectively. As for the problem of sudden stress change, a transition area of 2m at the intersection of the positive moment region and the negative moment region can reduce the stress mutation by 30 %, which effectively improve the adverse condition in the stiffness changing region. © 2021, Editorial Department of Journal of Tongji University. All right reserved.
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页码：1079 / 1087
页数：8
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共 20 条
  • [1] El-GENDY M, El-SALAKAWY E., Effect of flexural reinforcement type and ratio on the punching behavior of RC slab-column edge connections subjected to reversed-cyclic lateral loads, Engineering Structures, 200, (2019)
  • [2] DAI Changyuan, SU Qingtian, Crack width calculation of steel-concrete composite bridge deck in negative moment region, Journal of Tongji University(Natural Science), 45, 6, (2017)
  • [3] CHIN C L, KHUN M C, AWANG A Z, Et al., Confining stress path dependent stress-strain model for pre-tensioned steel-confined concrete, Engineering Structures, 201, (2019)
  • [4] MASSARO F M, MALO K A., Stress-laminated timber decks in bridges: friction between lamellas, butt joints and pre-stressing system, Engineering Structures, 213, (2020)
  • [5] STEENSELS R, VANDOREN B, VANDEWALLE L, Et al., Evaluation of end-zone detailing of pre-tensioned concrete girders, Engineering Structures, 187, 15, (2019)
  • [6] KIM C E, KIM J K, YUN N R, Et al., Structural behavior of a continuous composite truss with a composite bottom chord, Journal of Constructional Steel Research, 105, (2015)
  • [7] KIM H H, SHIM C S., Experimental investigation of double composite twin-girder railway bridges, Journal of Constructional Steel Research, 65, 6, (2009)
  • [8] MESZOELY T, RANDL N., Shear behavior of fiber-reinforced ultra-high performance concrete beams, Engineering Structures, 168, 1, (2018)
  • [9] WAN-WENDNER L, WAN-WENDNER R, CUSATIS G., Age-dependent size effect and fracture characteristics of ultra-high performance concrete, Cement and Concrete Composites, 85, (2018)
  • [10] CHEN Baochun, JI Tao, HUANG Qingwei, Et al., Review of research on ultra-high performance concrete, Journal of Architecture and Civil Engineering, 31, 3, (2014)
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