Experimental study on fatigue behavior of shear connectors in Q690 high strength steel-UHPC composite beams

被引：0
|
作者：
Tong L. [1 ,2 ]
Chen L. [1 ]
Wen M. [1 ]
Zhu J. [2 ]
Shao X. [3 ]
Zhao Z. [3 ]
机构：
[1] State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai
[2] Jiaxing Key Laboratory of High-performance and Functional Materials in Civil and Environmental Engineering, Tongji Zhejiang College, Jiaxing
[3] Zhejiang Hongri Tenacal New Materials Technology Co. Ltd., Ningbo
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2023年 / 44卷 / 01期
关键词：
pushout fatigue test; Q690 high strength steel; S-N curve; shear connector; stud arrangement; UHPC;
D O I：
10.14006/j.jzjgxb.2021.0631
中图分类号：
学科分类号：
摘要：
In order to study the fatigue performance of shear connectors in Q690 high-strength structural steel-ultra high-performance concrete (UHPC) composite beams, three groups of constant-amplitude fatigue tests involving a total of 12 pushout specimens were conducted. The tests considered the influences of stud diameter and arrangement of the studs, i. e., single-stud and group-stud. The results show that the fatigue failure mode of the test specimens is stud shear fracture. At a fatigue life of two million times, the fatigue strength of specimen with 13 mm diameter single-stud was 42. 5% greater than that of specimen with 19 mm diameter single-stud, which showed that the smaller diameter stud specimen has higher fatigue strength than the larger diameter stud specimen. The fatigue strength of specimen with 19 mm diametersingle-stud was 15. 0% higher than that of specimen with 19 mm diameter group-stud, which showed that the single-stud specimen has higher fatigue strength than the group-stud specimen. Compared with ordinary strength steel-ordinary concrete and ordinary strength steel-UHPC specimens, the shear connectors in the Q690 high-strength steel-UHPC specimen have higher fatigue strength, which was 71. 8% higher than the European BS EN 1994-1-1 fatigue strength of ordinary strength steel-ordinary concrete shear connectors. The S-N curve of Q690 high-strength steel-UHPC shear connector with single-stud arrangement was proposed for fatigue design. © 2023 Science Press. All rights reserved.
引用
收藏
页码：289 / 299
页数：10
相关论文
共 21 条
  • [1] NIE J G, CAI C S., Steel-concrete composite beams considering shear slip effects, Journal of Structural Engineering, 129, 4, pp. 495-506, (2003)
  • [2] CLASSEN M, HERBRAND M, KUERES D, Et al., Derivation of design rules for innovative shear connectors in steel-concrete composites through the systematic use of non-linear finite element analysis (FEA) [J], Structural Concrete, 17, 4, pp. 646-655, (2016)
  • [3] ROTTER J M, ANSOTJRIAN P., Cross-section behavior and ductility of composite beams [ J], Proceedings of the Institution of Civil Engineering, 67, 4, pp. 1141-1142, (1979)
  • [4] WANG Jingquan, QI Jianan, TONG Teng, Et al., Static behavior of large stud shear connectors in steel-UHPC composite structures, Engineering Structures, 178, 1, pp. 534-542, (2019)
  • [5] WANG Jingquan, XU Qizhi, YAO Yiming, Et al., Static behavior of grouped large headed stud-UHPC shear connectors in composite structures, Composite Structures, 206, 12, pp. 202-214, (2018)
  • [6] XUE Dongyan, LIU Yuqing, YU Zhen, Et al., Static behavior of multi-stud shear connectors for steel-concrete composite bridge, Journal of Constructional Steel Research, 74, 8, pp. 1-7, (2012)
  • [7] ZHANG Bing, HUANG Tao, XU Xiaohui, Et al., Longitudinal shear test on steel-concrete composite beam with two rowsof shear studs, Journal of Building Structures, 38, pp. 324-329, (2017)
  • [8] DING Faxing, NI Ming, GONG Yongzhi, Et al., Experimental study on slip behavior and calculation of shear bearing capacity for shear stud connectors, Journal of Building Structures, 35, 9, pp. 98-106, (2014)
  • [9] SLUTTER R G, FISHER J W., Fatigue strength of shear connectors, Highway Research Record, 147, pp. 65-88, (1966)
  • [10] Eurocode 4: design of composite steel and concrete structure: part 1: general rules and rules for buildings: BS EN 1994-1-1, (2004)
123