Steel and Composite Structures

  • 제34권4호
  • /
  • Pages.525-545
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  • 2020
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Flexural performance of composite walls under out-of-plane loads

  • Sabouri-Ghomi, Saeid (Civil Engineering Department, K.N. Toosi University of Technology) ;
  • Nasri, Arman (Civil Engineering Department, K.N. Toosi University of Technology) ;
  • Jahani, Younes (Analysis and Advanced Materials for Structural Design (AMADE), Polytechnic School, University of Girona) ;
  • Bhowmick, Anjan K. (Department of Building, Civil and Environmental Engineering, Concordia University)
  • 투고 : 2019.08.13
  • 심사 : 2020.01.03
  • 발행 : 2020.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents a new structural system to use as retaining walls. In civil works, there is a general trend to use traditional reinforced concrete (RC) retaining walls to resist soil pressure. Despite their good resistance, RC retaining walls have some disadvantages such as need for huge temporary formworks, high dense reinforcing, low construction speed, etc. In the present work, a composite wall with only one steel plate (steel-concrete) is proposed to address the disadvantages of the RC walls. In the proposed system, steel plate is utilized not only as tensile reinforcement but also as a permanent formwork for the concrete. In order to evaluate the efficiency of the proposed SC composite system, an experimental program that includes nine SC composite wall specimens is developed. In this experimental study, the effects of different parameters such as distance between shear connectors, length of shear connectors, concrete ultimate strength, use of compressive steel plate and compressive steel reinforcement are investigated. In addition, a 3D finite element (FE) model for SC composite walls is proposed using the finite element program ABAQUS and load-displacement curves from FE analyses were compared against results obtained from physical testing. In all cases, the proposed FE model is reasonably accurate to predict the behavior of SC composite walls under out-of-plane loads. Results from experimental work and numerical study show that the SC composite wall system has high strength and ductile behavior under flexural loads. Furthermore, the design equations based on ACI code for calculating out-ofplate flexural and shear strength of SC composite walls are presented and compared to experimental database.

키워드

참고문헌

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피인용 문헌

  1. Behavior of L-shaped double-skin composite walls under compression and biaxial bending vol.37, pp.4, 2020, https://doi.org/10.12989/scs.2020.37.4.405
  2. Improved analytical formulation for Steel-Concrete (SC) composite walls under out-of-plane loads vol.38, pp.4, 2020, https://doi.org/10.12989/scs.2021.38.4.463