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Investigation of Stiffness Effect of Coupling Beam on Boundary Element Detailing in Structures with Hybrid Coupled Shear Walls

Technical note

Abstract

Coupled walls are known to be efficient lateral load-bearing systems. Coupling beam and wall piers are two important and effective elements in the general response of these structures. In this paper, stiffness effect of steel coupling beams on boundary elements in coupled shear walls has been investigated. The provisions of Iranian National Building Code for concrete structure (INBC-No. 9) for evaluating detailing requirements at wall boundaries are based on studies on uncoupled continuous walls, in which stress distribution across sections is assumed to be linear and in un-cracked sections. Due to the fact that there have been severe axial forces on wall piers resulting in the creation of cracks in sections of tension walls, the applicability of these provisions in coupled walls should be evaluated. Several coupled wall structures with different geometrical specifications, representative of various ratios of stiffness of the coupling beam to stiffness of the wall (RSBW), under equivalent lateral force, were designed, and efficiency of the code provisions was investigated in comparison with the results of the numerical analysis in Abaqus software. In this analysis, nonlinear behavior of material was considered. Results show that for structures with large and medium RSBW, code provisions are not appropriate in evaluating detailing requirements of tension wall boundaries, and a nonlinear stress distribution on the section should be used. For compression walls and structures with low RSBW, code provision is reliable.

Keywords

Coupled shear wall Steel coupling beam Boundary element 

References

  1. ABAQUS (2010) Analysis user’s manual, version 6.10.1., 2010Google Scholar
  2. American Concrete Institute (ACI) (2008) Committee 318. Building code requirements for reinforced concrete and commentary (ACI 318-08), Farmington Hills, MI, 2008Google Scholar
  3. Arabzadeh A, Omranian E (2012) Investigation of behavior of steel coupling beams in coupled shear wall structures under cyclic loading, 2nd National conference of Structure and Steel 2012, Tehran, IranGoogle Scholar
  4. Fortney PJ (2005) The next generation of coupling beams. PhD Dissertation, University of Cincinnati, CincinnatiGoogle Scholar
  5. Fortney PJ, Shahrooz BM (2009) Boundary detailing of coupled core wall system wall piers. J Adv Struct Eng 122:99–310Google Scholar
  6. Fortney PJ, Shahrouz BM, Rassati GA (2006) The next generation of coupling beams. Composite Construction in Steel and Concrete 2006 V, Leon RT, Lange J (eds), ASCE, Reston 619:630Google Scholar
  7. Fortney PJ, Shahrooz BM, Rassati GA (2007) Large-scale testing of a replaceable fuse steel coupling beam. J Struct Eng 133:1801–1807CrossRefGoogle Scholar
  8. Gong B, Shahrooz BM (2001) Steel-concrete composite coupling beams-behavior and design. J Eng Struct 23:1480–1490CrossRefGoogle Scholar
  9. Harries KA, Mitchell D, Cook WD, Redwood RG (1993) Seismic response of steel beams coupling concrete walls. J Struct Eng 119:3611–3629CrossRefGoogle Scholar
  10. Harries KA, Gong B, Shahrooz B (2000) Behavior and design of reinforced concrete, steel, and steel-concrete coupling beams. J Earthq Spectr 16:775–799CrossRefGoogle Scholar
  11. Kheyroddin A, Naderpour H, Ghodrati Amiri G, Hoseini Vaez SR (2011) Influence of carbon fiber reinforced polymers on upgrading shear behavior of RC coupling beam. IJST Trans Civil Eng 35:155–169Google Scholar
  12. Kuang JS, Baczkowski BJ (2009) Steel fibre reinforced concrete coupling beams subjected to monotonic loading. Mag Concr Res 61(1):35–41CrossRefGoogle Scholar
  13. Marcakis K, Mitchell D (1980) Precast concrete connections with embedded steel members. PCI J 25:88–116CrossRefGoogle Scholar
  14. Omranian E (2012) Investigation of behavior of Steel coupling beams in concrete shear wall under cyclic loading, M.Sc. thesis, University of Tarbiat Modares, Iran, 2012. (in Persian)Google Scholar

Copyright information

© Shiraz University 2016

Authors and Affiliations

  1. 1.Faculty of Civil Engineering and EnvironmentTarbiat Modares UniversityTehranIran

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