Improvement of Concrete Shear Wall Structures by Smart Materials

Mehdi Ghassemieh, Mohammad Reza Bahaari, Seyed Mohyeddin Ghodratian, Seyed Ali Nojoumi

Civil & Environmental Engineering Department, University of California, Los Angeles, CA, USA.
School of Civil Engineering, University of Tehran, Tehran, Ira.

DOI: 10.4236/ojce.2012.23014                

Abstract

Smart materials have found numerous applications in many areas in civil engineering recently. One class of these materials is shape memory alloy (SMA) which exhibits several unique characteristics such as superelasticity and shape memory effect. Due to these characteristics, research efforts have been extended to use SMA in controlling civil structures. This paper investigates the effectiveness of SMA reinforcements in enhancing the behavior of shear walls, especially when subjected to seismic excitations. Two ordinary and coupled shear walls were introduced as reference structures and were modeled by ABAQUS software. For improving the seismic response of the shear walls, vertical SMA reinforcing bars were proposed to be implemented like conventional steel reinforcements, throughout the height of the structures and in every connecting beam in the coupled shear wall system. The one dimensional superelastic model of SMA material was implemented in the computer software using FORTRAN code. The dynamic response of the shear walls subjected to seismic loading was investigated through time history analyses under El-centro and Koyna records. The results showed that using superelastic SMA material instead of steel bars caused remarkable reduction in residual displacement for both ordinary and coupled shear walls. In addition, SMA reinforcements could significantly decrease the maximum deflection of the coupled shear wall system.

Keywords

Smart Material; Shape Memory Alloy; Shear Wall; Superelasticity; Seismic Behavio

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	M. Dolce, D. Cardone and R. Marnetto, “Implementation and Testing of Passive Control Devices Based on Shape Memory Alloys,” Earthquake Engineering and Structural Dynamics, Vol. 29, No. 7, 2000, pp. 945-968. doi:10.1002/1096-9845(200007)29:7<945::AID-EQE958>3.0.CO;2-#
[2]	K. Wilde, P. Gardoni and Y. Fujino, “Base Isolation System with Shape Memory Alloy Device for Elevated Highway Bridges,” Engineering Structures, Vol. 22, 2000, pp. 222-229. doi:10.1016/S0141-0296(98)00097-2
[3]	M. Dolce and D. Cardone, “Mechanical Behavior of Shape Memory Alloys for Seismic Applications-2. Austenite NiTi Wires Subjected to Tension,” International Journal of Mechanical Sciences, Vol. 43, No. 11, 2001, pp. 2657- 2677. doi:10.1016/S0020-7403(01)00050-9
[4]	S. Bruno and C. Valente, “Comparative Response Analysis of Conventional and Innovative Seismic Protection Strategies,” Earthquake Engineering and Structural Dynamics, Vol. 31, 2002, pp. 11067-11092. doi:10.1002/eqe.138
[5]	A. Baratta and O. Corbi, “On the Dynamic Behavior of Elastic-Plastic Structures Equipped with Pseudoelastic SMA Reinforcements,” Computational Materials Science, Vol. 25, No. 2, 2002, pp. 1-13. doi:10.1016/S0927-0256(02)00245-8
[6]	R. DesRoches and M. Delemont, “Seismic Retrofit of Simply Supported Bridges Using Shape Memory Alloy,” Engineering Structures, Vol. 24, No. 3, 2002, pp. 325- 332. doi:10.1016/S0141-0296(01)00098-0
[7]	A. Masuda and M. Noori, “Optimization of Hysteretic Characteristics of Damping Devices Based on Pseudoelastic Shape Memory Alloys,” International Journal of Non-Linear Mechanics, Vol. 37, No. 8, 2002, pp. 1375- 1386. doi:10.1016/S0020-7462(02)00024-0
[8]	R. DesRoches, M. Delemont and J. McCormick, “Cyclical Properties of Superelastic Shape Memory Alloys,” ASCE Journal of Structural Engineering, Vol. 130, No. 1, 2004, pp. 38-46. doi:10.1061/(ASCE)0733-9445(2004)130:1(38)
[9]	A. Abolmaali, J. Treadway, P. Aswath, F. K. Lu and E. McCarthy, “Hysteresis Behavior of T-stub with Superelastic Shape Memory Fasteners,” Journal of Constructional Steel Research, Vol. 62, No. 8, 2006, pp. 831-838. doi:10.1016/j.jcsr.2005.11.017
[10]	E. Choi, T.H. Nam, J.T. Oh and B.S. Cho, “An Isolation Bearing for Highway Bridges Using Shape Memory Alloys,” Material Science and Engineering A, Vol. 438-440, 2006, pp. 1081-1084. doi:10.1016/j.msea.2006.05.098
[11]	S. A. Motahari and M. Ghassemieh, “Multilinear One- dimensional Shape Memory Material Model for Use in Structural Engineering Applications,” Engineering Structures, Vol. 29, No. 6, 2006, pp. 904-913. doi:10.1016/j.engstruct.2006.06.007
[12]	C. Czaderski, B. Hahnebach, and M. Motavalli, “RC Beam with Variable Stiffness and Strength,” Construction and Building Materials, Vol. 20, No. 9, 2006, pp. 824- 833. doi:10.1016/j.conbuildmat.2005.01.038
[13]	S. Saiidi and H. Wang, “Exploratory Study of Seismic Response of Concrete Columns with Shape Memory Alloys Reinforcement,” ACI Structural Journal, Vol. 103, No. 3, 2006, pp. 436-443.
[14]	S. A. Motahari, M. Ghassemieh and S. A. Abolmaali, “Implementation of Shape memory Alloy Dampers for Passive Control of Structures Subjected to Seismic Excitations,” Journal of Constructional Steel Research, Vol. 63, No. 12, 2007, 1570-1579. doi:10.1016/j.jcsr.2007.02.001
[15]	L. Li, Q. Li and F. Zhang “Behavior of Smart Concrete Beams with Embedded Shape Memory Alloy Bundles,” Journal of Intelligent Material Systems and Structures, Vol. 18, No. 10, 2007, pp. 1003-1014. doi:10.1177/1045389X06071974
[16]	B. Andrawes and R. DesRoches “Comparison between Shape Memory Alloy Seismic Restrainers and Other Bridge Retrofit Devices,” Journal of Bridge Engineering, Vol. 12, No. 6, 2007, pp. 700-709. doi:10.1061/(ASCE)1084-0702(2007)12:6(700)
[17]	R. Johnson, J. E. Padgett, M. E. Maragakis, R. DesRoches and M. S. Saiidi, “Large Scale Testing of Nitinol Shape Memory Alloy Devices for Retrofitting of Bridges,” Smart Material and Structures, Vol. 17, No. 3, 2008, Article ID: 035018, pp. 1-28. doi:10.1088/0964-1726/17/3/035018
[18]	M.A. Rahman, S. R. Akanda and M.A. Hossain, “Effect of Cross Section Geometry on the Response of an SMA Column,” Journal of Intelligent Material Systems and Structures, Vol. 19, No. 2, 2008, pp. 243-252.
[19]	A. M. Sharabash and B. Andrawes, “Application of Shape Memory Alloy Dampers in the Seismic Control of Cable-Stayed Bridges,” Engineering Structures, Vol. 31, No. 2, 2009, pp. 607-616. doi:10.1016/j.engstruct.2008.11.007
[20]	S. Saiidi, M. O’Brien and M. Sadrossadat-Zade, “Cyclic Response of Concrete Bridge Columns Using Superelastic Nitinol and Bendable Concrete,” ACI Structural Journal, Vol. 106, No. 1, 2009, pp. 69-77.
[21]	O. E. Ozbulut and S. Hurlebaus, “Seismic Assessment of Bridge Structures Isolated by a Shape Memory Alloy/ Rubber-Based Isolation System,” Smart Materials and Structures, Vol. 20, No. 1, 2011, Article ID: 015003, pp. 1-15. doi:10.1088/0964-1726/20/1/015003
[22]	A. kari, M. Ghassemieh and A. Abolmaali, “A New Dual Bracing System for Improving the Seismic Behavior of Steel Structures,” Smart Materials and Structures, Vol. 20, No. 12, 2011, Article ID: 125020, pp. 1-35. doi:10.1088/0964-1726/20/12/125020
[23]	Abaqus, Inc., ABAQUS User Manual, V6.4, 2006.
[24]	J. Lee and G. L. Fenves, “A Plastic-Damage Model for Cyclic Loading of Concrete Structures,” ASCE Journal of Engineering Mechanics, Vol. 124, No. 8, 1998, pp. 892-900. doi:10.1061/(ASCE)0733-9399(1998)124:8(892)
[25]	B. Andrawes and R. DesRoches, “Sensitivity of Seismic Applications to Different Shape Memory Alloy Models,” Journal of Engineering Mechanics, Vol. 134, No. 2, 2008, pp. 173-183. doi:10.1061/(ASCE)0733-9399(2008)134:2(173)