Effect of Stud Connector Diameter on the Behavior of Steel–Lightweight Self-Compacting Concrete Composite Beams with Partial shear Connection-Reference-Cited by-同舟云学术

Effect of Stud Connector Diameter on the Behavior of Steel–Lightweight Self-Compacting Concrete Composite Beams with Partial shear Connection

Published:2024-01-02 Issue:2 Volume:9 Page:
ISSN:2714-7444
Container-title:Academia Open
language:
Short-container-title:acopen

Author:

Hadi Bayadir Abed,Saleh Samoel Mahdi

Abstract

This study investigates the efficacy of using lightweight self-compacting concrete (LWSCC) in steel-concrete composite beams, focusing on the role of headed stud connectors in shear connection. The research aimed to evaluate the behavior and shear strength of M16 and M20 headed stud connectors within LWSCC. To this end, six push-out test samples and six simply supported steel-LWSCC composite beams were fabricated and tested, with variables including the degree of shear connection (DSC) and stud diameter. The results demonstrated that an increase in DSC significantly enhanced the ultimate load capacity, service load, and stiffness of the composite beams, with marked improvements observed in the beams with M16 connectors (94%, 95%, and 122%, respectively) and those with M20 connectors (43%, 43%, and 20%, respectively). Furthermore, increasing the stud diameter from 16mm to 20mm resulted in a 38% increase in shear strength of the connectors and notably improved the mechanical characteristics of the beams. The study also found that while an increased DSC reduces deflection at ultimate and service loads due to heightened stiffness, a larger stud diameter has only a marginal effect on deflection. This research highlights the potential of LWSCC in enhancing the structural performance of steel-concrete composite beams, particularly with optimized shear connections, offering valuable insights for advancements in construction materials and methods. Highlights : Enhanced Load Capacity: Increase in the degree of shear connection significantly boosts ultimate load capacity and stiffness in composite beams. Stud Diameter Impact: A 38% rise in shear strength is achieved by increasing stud diameter from 16mm to 20mm. Deflection Reduction: Higher degree of shear connection effectively minimizes deflection, though stud diameter has minimal impact. Keywords : Lightweight Self-Compacting Concrete, Steel-Concrete Composite Beams, Shear Connection, Headed Stud Connectors, Structural Performance.

Publisher

Universitas Muhammadiyah Sidoarjo

Reference23 articles.

1. R. Shamass and K. A. Cashell, “Behaviour of Composite Beams Made Using High Strength Steel,” Structures, vol. 12, pp. 88–101, 2017.

2. B. Wang, Q. Huang, X. Liu, and W. Li, “Experimental investigation of steel-concrete composite beams with different degrees of shear connection under monotonic and fatigue loads,” Adv. Struct. Eng., vol. 21, no. 2, pp. 227–240, 2018.

3. G. Vasdravellis and B. Uy, “Shear Strength and Moment-Shear Interaction in Steel-Concrete Composite Beams,” J. Struct. Eng., vol. 140, no. 11, pp. 1–11, 2014.

4. M. Zhou, J. Zhang, J. Zhong, and Y. Zhao, “Shear Stress Calculation and Distribution in Variable Cross Sections of Box Girders with Corrugated Steel Webs,” J. Struct. Eng., vol. 142, no. 6, pp. 1–10, 2016.

5. A. Thirumalaiselvi, N. Anandavalli, J. Rajasankar, and N. R. Iyer, “Numerical evaluation of deformation capacity of laced steel-concrete composite beams under monotonic loading,” Steel Compos. Struct., vol. 20, no. 1, pp. 167–184, 2016.