Mechanical Performance of Group Stud Connectors in Steel–Concrete Composite Beams with Straddle Monorail
Source abstract
Abstract
A steel–concrete composite beam with a straddle monorail is a lightweight and easily installable structure. The mechanical performance of group stud connectors and their arrangement are key design parameters that govern the beam’s overall performance. This study investigates the behavior of group stud connectors by conducting push-out tests on four specimens, comprising three full-scale models and one 1:3 scaled model. Variables such as the number of connectors, arrangement, and specimen size were explored. The results indicated that all the specimens exhibited ductile failure due to stud shearing. The strain distribution analysis revealed higher strain at the edges and lower in the middle, persisting as the load increased. The group stud effect resulted in a 23.4% to 27.2% reduction in shear capacity for the full-scale specimens and 16.5% for the scaled specimen. The reduction was proportional to the density of the studs, but the size effects were less significant. This study provides valuable insights into the mechanical behavior of group stud connectors and offers design recommendations for practical applications.
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Research context
OpenAlex topics: Structural Load-Bearing Analysis · Mechanical stress and fatigue analysis · Structural Behavior of Reinforced Concrete
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Fashion and Design, Donghua University, Shanghai 200051, China
College of Civil Engineering, Hunan University, Changsha 410082, China
College of Civil Engineering, Chongqing University, Chongqing 400044, China
College of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Funding
National Key Research and Development Program of China · China Postdoctoral Science Foundation · Fundamental Research Funds for the Central Universities
References (27)
Show source-provided references
1. Seismic retrofit of monorail bridges considering soil-pile-bridge-train interaction10.1061/(ASCE)BE.1943-5592.0001613 ↗
2. An innovative straddle monorail track switch design for the personal rapid transit10.1504/IJHVS.2021.117500 ↗
3. Study on equivalent stiffness of prefabricated steel-concrete composite track beam with straddle monorail group nail connection
4. Numerical Analysis on Shear Behavior of Grouped Head Stud Shear Connectors between Steel Girders and Precast Concrete Slabs with High-Strength Concrete-Filled Shear Pockets10.1061/(ASCE)BE.1943-5592.0001727 ↗
5. Experimental Study of the New Type Stud Shear Connector for Assembled Steel–Concrete Beams10.1007/s40996-021-00791-9 ↗
6. The Use of Shear Connectors for Enhancing the Performance of Steel–Concrete Composite Beams: Experimental and Numerical Assessment10.1007/s13296-021-00546-2 ↗
7. Study on mechanical characteristics of assembled composite track beam connected by group nails
8. Static Behavior of Grouped Stud Shear Connectors in Steel–Precast UHPC Composite Structures Containing Thin Full-Depth Slabs10.1016/j.engstruct.2021.113484 ↗
9. Shear behavior of a novel bearing-shear connector for prefabricated concrete decks10.1016/j.conbuildmat.2020.121090 ↗
10. Experimental Investigation on Static Mechanical Performance of Grouped-Stud Shear Connectors in Steel–UHPC Composite Beams10.1016/j.engstruct.2024.117836 ↗
11. Lu, W., Huang, Y., and Xu, W. (2023). Study on the Shear Resistance Performance of Grouped Stud Connectors. Materials, 16.10.20944/preprints202309.0046.v1 ↗
12. Investigations on the Shearing Performance of Composite Beams with Group Studs10.1177/13694332221120083 ↗
13. Zhao, G.-Y., Zhu, L., Liu, W., Zhao, J.-C., and Huo, J.-X. (2023). Numerical Study on the Effect of Interface Dynamic Damage of Steel–Concrete Composite Beam Bridge Caused by High–Frequency Impact Load. Buildings, 13.10.3390/buildings13020545 ↗
14. 3D finite element analysis of grouped shear stud connectors in composite beams
15. Performance of Grouped Stud Connectors in Precast Steel-UHPC Composite Bridges under Combined Shear and Tension Loads10.1016/j.engstruct.2022.115470 ↗
16. Influence of grouped shear connectors on the fatigue behavior of composite beams
17. Stiffness Analysis of Shear Stud Group Connectors in Precast Concrete Deck10.1016/j.engstruct.2022.115148 ↗
18. Static and Dynamic Characteristics of Steel-Concrete Composite Track Beam of Straddle Monorail with Cluster-Distributed Studs10.1155/2022/9570045 ↗
19. Experimental and Numerical Study of the Flexural Behavior of a Full-Scale Steel-Concrete Composite Beam10.1007/s40996-022-01009-2 ↗
20. Methodology for Calculating Load Capacity Reduction and Slip Relationship of Clustered Group Nail Connectors10.1186/s43251-024-00118-4 ↗
21. (2012). Standard for Test Methods of Concrete Structures (Standard No. GB/T 50152). (In Chinese).
22. (2002). Cheese Head Studs for Arc Stud Welding (Standard No. GB/T 10433-2002). (In Chinese).
23. (2016). Technical Specification for Steel–Concrete Composite Structures (Standard No. JGJ 138-2016). (In Chinese).
24. (2005). EUROCODE 4: Design of Composite Steel and Concrete Structures (Standard No. EN 1994).
25. AASHTO (2007). LFRD Bridge Design Specifications, American Association of State Highway and Transportation Officials. [4th ed.].
26. JSCE (2007). Standard Specification for Steel and Composite Structures (Design Edition), Japan Society of Civil Engineers. (In Japanese).
27. (2013). Code for Design of Steel and Concrete Composite Bridges (Standard No. GB50917-2013). (In Chinese).