Steel Plate Characteristic Effecting on Composite Coupled Beam at Concrete Shear Wall


1 Associate Professor, Faculty of Civil Engineering, Semnan University, Semnan, Iran

2 Assistant Professor, Faculty of Civil Engineering, Semnan University, Semnan, Iran

3 Graduated M.Sc. Student of Structural Eng., Semnan University, Semnan, Iran


Composite couple beams are the concrete elements consisting of longitudinal bars and steel plate, therefore suitable for shear transferring in couple shear walls with arranged gates in its height. In this paper, after modeling couple beams with and without steel plates with F.E methods and calibration the models with experimental results, effects of parameters such as thickness, height, length and yielding strength of the steel plates located in concrete couple composite beam have been investigated on the ductility, energy dissipation and capacity. The results were illustrated that if the plate thickness would be increased by four times, ductility and energy dissipation capacity were decreased 15.6 and 14.7 percent and also loading capacity was enhanced up to 25 percent, respectively. And also the plate height and length didn’t have influence on above mentioned parameters. Furthermore, by 80 and 280 percent enhancement in yielding plate strength, ductility and energy dissipation capacity were decline 10.8 to 23.9 and 8.9 to 21.7 percent and also 19, 33 percent enhancement in loading capacity was happened.


[1] Fortney, P.J., Shahrouz, B.M., Rassati, G.A. (2006). “The next generation of coupling beams”. Composite Construction in Steel and Concrete V, ASCE, pp. 619-630.

[2] Gong, B., Harris, K.A., Shahrouz, B.M. (2000). “Behaviors and design of reinforced concrete, steel, and steel-concrete coupling beams”. Earthquake Spectra, Vol. 16, No. 4, pp. 775-99.

[3] Gong, B., Shahrouz, B.M. (2001). “Concrete-steel composite coupling beams I: Component testing”. Journal of structural Engineering, ASCE, Vol. 127, No. 6, pp. 625-31.

[4] Harris, K.A., Mitchell, D., Cook, W.D., Redwood, R.G. (1993). “Seismic response of steel beams coupling concrete walls”. Journal of Structural Engineering, ASCE, Vol. 119, No. 12, pp. 3611-29.

[5] Riazi, M. (2003). “Modeling concrete couple beams with regular reinforcement at shear walls”, M.S. Thesis, Ferdosi University, Iran.

[6] Mahzarnia, S.H. (2003). “Investigation of shear walls behavior with steel couple beams”. M.S. Thesis, Semnan University, Iran.

[7] Subedi, N.K. (1989). “Reinforced concrete beams with plate reinforcement for shear”. Proceeding of Institution of Civil Engineers part 1-Design & Construction, Vol. 87, pp. 377-99.

[8] Teng J.G., Chen J.F., Lee Y.C. (1999). “Concrete-filled steel tubes as coupling beams for RC shear walls”. Proceedings of the Second International Conference on Advances in Steel Structures, pp. 391-399.

[9] El-Tawil, S., Harris, K.A., Fortney, P.J., Shahrooz, B.M., Kurama, Y. (2010). “Seismic design of hybrid coupled wall systems: state of the art”. Journal of structural engineering, Vol. 136, Issue 7, pp. 755-769.

[10] Lu, X., Chen, Y. (2005). “Modeling of coupled shear walls and its experimental verification”. Journal of Structural Engineering, Vol. 131, Issue 1, pp. 75-84.

[11] ANSYS, (2009). “ANSYS. User’s Manual”.  10.0, SAS IP, Inc.