Seismic Behavior of Studded Steel Coupling Beam Linked to RC Shear Wall

Document Type : Structural Earthquake Engineering

Authors

1 IIEES

2 Tarbiat Modares University

Abstract

Steel coupling beams are increasingly used in coupled wall systems in medium to high rise buildings for high seismic prone areas. Recent investigations focused on interactions between steel coupling beams and reinforced concrete wall in connection region. However, due to lack of data, effect of studs practically utilized in connection zone is not fully understood. Therefore, the major variable in the experimental test includes studs on beam flanges. On the other hand, the test complemented on specimen only considered one half of steel coupling beam and an individual wall, which is different from actual conditions of coupled walls. To address the gap in the previous study, the effects of this difference and concentrated transverse reinforcement around the connection zone investigated through finite element modeling. Results showed that the application of studs could decrease the required embedment length in wall face if reinforcement around the embedded beam were properly placed. The findings proved that tests half assembly of coupled walls in comparison with total assembly have considerably underestimate results.

Keywords


ACI211-91 (2002) Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete. American Concrete Institute committee, 211 (Reapproved) 1-38.
ACI 318 (2014) Building Code Requirements for Structural concrete and Commentary. American Concrete Institute; Farmington Hills, MI, USA.
AISC (2010) Seismic Provisions for Structural Steel Buildings. American Institute of Steel Construction, Chicago, USA.
ASTM A370 - 12a (2012) Standard Test Methods and Definitions for Mechanical Testing of Steel Products. ASTM strandard, West Conshohocken, PA, USA.
ASTM C39/C39M-17a (2017) Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens. ASTM strandard; West Conshohocken, PA, USA.
Bengar, H.A., and Aski, R.M. (2016) Performance-based evaluation of RC coupled shear wall system with steel coupling beam. Steel Compos. Struct., 20(2), 337-355.
Cheng, M.Y., Fikri, R., and Chen, C.C. (2015) Experimental study of reinforced concrete and hybrid coupled shear wall systems. Eng. Struct., 82(1), 214-225.
Code 2800 (2014) Iranian Code of Practice for Seismic Resistant Design of Buildings 2800. Terhan, Iran.
CEB-FIP (1993) CEB-FIP Model Code 1990. Comite Euro-International Du Beton, Lausanne, Switzerland.
El-Tawil, S., Harries, K.A., Fortney, P.J., Shahrooz, B.M., and Kurama, Y. (2010) Seismic Design of Hybrid Coupled Wall Systems: State of the Art. J. Struct. Div., ASCE, 136(7), 755-769.
Farsi, A., Keshavarzi, F., Pouladi, P., and Mirghaderi, R. (2016) Experimental study of a replaceable steel coupling beam with an end-plate connection. J. Constr. Steel Res., 122, 138-150.
Fortney, P.J., Shahrooz, B.M., and Rassati, G.A. (2007a) Large-Scale Testing of a Replaceable ‘Fuse’ Steel Coupling Beam. J. Struct. Div. ASCE, 133(12), 1801-1807.
Fortney, P.J., Shahrooz, B.M., and Rassati, G.A. (2007b) Seismic performance evaluation of coupled core walls with concrete and steel coupling beams. Steel Compos. Struct., 7(4), 279-301.
Gong, B. and Shahrooz, B.M. (2001a) Concrete-steel composite coupling beams. II: Subassembly testing and design verification. J. Struct. Div. ASCE, 127(6), 632-638.
Gong, B., and Shahrooz, B.M. (2001b) Concrete-steel composite coupling beams. I: Component Testing. J. Struct. Div. ASCE, 127(6), 625-631.
Han, L.H., Yao, G.H., and Tao, Z. (2007) Performance of concrete-filled thin-walled steel tubes under pure torsion. Thin-Walled Struct., 45(1), 24-36.
Harries, K.A., Mitchell, D., Redwood, R.G., and Cook, W.D. (1997) Seismic design of coupling beamsÂ‌ - a case for mixed construction. Can. J. Civ. Eng., 24(3), 448-459.
Harries, K.A., Gong, B., and Shahrooz, B.M. (2000) Behavior and design of reinforced concrete, steel, and steel-concrete coupling beams. Earthq. Spectra, 16(4), 775-799.
Harries, K.A., Mitchell, D., Cook, W.D., and Redwood, R.G. (1993) Seismic response of steel beams coupling concrete walls. J. Struct. Div., ASCE, 119(12).
Marcakis, K., and Mitchell, D. (1980) Precast concrete connections with embedded steel members. J. Prestress. Concr. Inst., 25(4), 88-116.
Mattock, A.H., and Gaafar, G.H. (1982) Strength of embedded steel sections as brackets. J. Proc., 79(2), 83-93.
Motter, C.J. (2014) Large-Scale Testing of Steel Reinforced Concrete (SRC) Coupling Beams Embedded into Reinforced Concrete Shear Walls. Ph.D. Dissertation, University of California, Los Angeles.
Motter, C.J., Fields, D.C., Hooper, J.D., Klemencic, R., and Wallace, J.W. (2016a) Steel-reinforced concrete coupling beams. I: Testing. J. Struct. Div., ASCE, 143(3), 14-25.
Motter, C.J., Fields, D.C., Hooaper, J.D., Klemencic, R., and Wallace, J.W. (2016b) Steel-reinforced concrete coupling beams. II: Modeling. J. Struct. Div., ASCE, 143(3), 1-13.
Pallars, L., and Hajjar, J.F. (2010a) Headed steel stud anchors in composite structures, Part II: Tension and interaction. J. Constr. Steel Res., 66(2), 213-228.
Pallars, L., and Hajjar, J.F. (2010b) Headed steel stud anchors in composite structures, Part I: Shear. J. Constr. Steel Res., 66(2), 198-212.
Park, W.S., and Yun, H.D. (2005) Seismic behaviour of steel coupling beams linking reinforced concrete shear walls. Eng. Struct., 27(7), 1024-1039.
Park, W.S., Yun, H.D., Chung, J.Y., and Kim, Y.C. (2005) Experimental studies on seismic behavior of steel coupling beams. Struct. Eng. Mech., 20(6), 695-712.
Shahrooz, B.M., Remmetter, M., and Quin, F. (1993) Seismic design and performance of composite coupled walls. J. Struct. Div., ASCE, 119, 3291-3309.