Analysis of Masonry Infill Panels Retrofitted with FRP Sheets in R/C Frames

الموضوعات :

Hosein Parastesh ¹ , Murat Saatcioglu ²

1 - Associate Professor of Civil Engineering Department of Civil Engineering, University of Science and Culture, Tehran, Iran
2 - Professor, Dept. of Civil Engineering, University of Ottawa, Ottawa, Canada. E-mail: [e-mail]

تاريخ الإرسال : 29 الخميس , شعبان, 1438 تاريخ التأكيد : 22 الأحد , شوال, 1438 تاريخ الإصدار : 22 الأربعاء , ربيع الأول, 1446

الکلمات المفتاحية: Finite element model, Retrofit, nonlinear analysis, seismic loading, Reinforced Concrete, Masonry infill, FRP sheet,

ملخص المقالة :

Masonry infill walls are often used as non-structural elements. According to the past structural failure, ignorance of interaction between infill walls and enclosed frame may lead to the different seismic response for non-ductile building frames. The main contribution of this paper is to analytically investigate the behavior of reinforced concrete with masonry infill panels as participating structural. In doing so, a finite element model based on an equivalent strut method is conducted to represent the behavior of masonry panels. The strut model is calibrated using the results of the companion experimental program, which examined the cyclic behavior of infill panels with and without FRP sheets. Accordingly, a nonlinear spring element and a shell element are used to simulate the behavior of masonry strut elements and FRP sheets, respectively. The nonlinear static analysis (Push over analysis) is accomplished using SAP2000 [1] structural analysis software for a 10-story building with FRP sheets subjec

المصادر:

[1]     SAP2000 Integrated Finite Elements Analysis and Design of Structures.” Referenced an Tutorial Manual Ver. 6.2 Beta, June 1998.

[2]     Ghasemi, S. H. and Ashtari, P.”Combinatorial Continuous Non-stationary Critical  Excitation in M.D.O.F Structures Using modified Envelope Functions”, Journal of Earthquakes and Structures, Vol. 7, No. 6, pp.859-908, 2014.

[3]     Binici, B., Ozcebe, G., and Ozcelik, R. “Analysis and design of FRP composites for seismic retrofit of infill walls in reinforced concrete frames”, Infrastructure Composites under Extreme Loadings, Volume 38, Issues 5–6, pp. 575–583, 2006.

[4]     Almusallam, T. and Al-Salloum, Y.  "Behavior of FRP Strengthened Infill Walls under In-Plane Seismic Loading." J. Compos. Constr., 11:3(308), 308-318, 2007.

[5]     Atkinson, R.H., & Kingsley, R.G., “Comparison of the Behavior of Clay and Concrete Masonry Prisms in Compression.” Technical Report, Atkinson-Noland & Assoc., Boulder, CO, 1975.

[6]     Lunn, D. and Rizkalla, S.  "Strengthening of Infill Masonry Walls with FRP Materials." J. Compos. Constr., 206-214, 2011.

[7]     Ozbakkaloglu, T. and Saatcioglu, M.  "Tensile Behavior of FRP Anchors in Concrete." J. Compos. Constr., 10.1061/(ASCE)1090-0268(2009)13:2(82), 82-92, 2009.

[8]     El-Sokkary, H. and Galal, K.  "Seismic Behavior of RC Shear Walls Strengthened with Fiber-Reinforced Polymer." J. Compos. Constr., 10.1061/(ASCE)CC.1943-5614.0000364, 603-613, 2013.

[9]     Ghasemi, S. H. and Nowak, A. S. “Reliability Index for Non-Normal Distributions of Limit State Functions”. Structural Engineering and Mechanics, Vol. 62, No. 3, pp. 365-372, 2017.  

[10] Ghasemi, S. H. and Nowak, A. S. “Mean Maximum Values of Non-Normal  Distributions for Different Time Periods", International Journal of Reliability and Safety, Vol.  10, No. 2, 2016.

[11] Ghasemi, S. H. and Nowak, A. S. “Reliability Analysis for Serviceability Limit State  of Bridges Concerning Deflection Criteria” Journal of Structural Engineering International, Association for Bridge and Structural Engineering IABSE, Vol. 26, No. 2, pp. 168-175, 2016.

[12] Ghasemi, S. H. and Nowak, A. S. “Statistical Parameters of In-A-Lane Multiple  Truck Presence and a New Procedure to Analyze the Lifetime of Bridges", Journal of Structural  Engineering International, Association for Bridge and Structural Engineering IABSE, Vol. 26,  No. 2, pp. 150-159, 2016.

[13] Ghasemi, S. H. and Nowak, A. S. “Target Reliability for Bridges with Consideration of Ultimate Limit State”, Engineering Structures, vol. 152, pp. 226-237, 2017.

[14] Yanaka, M., Ghasemi, S. H. and Nowak, A. S. “Reliability-Based and Life-Cycle-Cost  Oriented  Design  Recommendations  for  Prestressed  Concrete  Bridge  Girders”  Structural Concrete, Vol. 18, Issue 1, pp. 836-847, 2016.                        

[15] Serrato, F., “Seismic Retrofitted of URM Infill Panels in Reinforced Concrete Frame Using FRP Sheets.” M.A.Sc. Thesis, Department of Civil Engineering, University of Ottawa, Canada, 2002.

[16] Stafford Smith, B., “Lateral stiffness of infilled frames.” Journal of the Structural Division (ASCE): 88(6): 183–199, 1962.

[17] Stafford Smith, B., “Methods for predicting the lateral stiffness and strength of multi-storey infilled frames.” Building Science: 2: 247–257, 1967.

[18] Mainstone, R. J., & Weeks G. A., “The influence of bounding frame on the racking stiffness and strength of brick walls.” Proceedings of the 2nd International Conference on Brick Masonry, Stoke-on-Trent, UK,: 165–171, 1970.

[19] Holmes, M., “Steel frames with brickwork and concrete filling.” Proceedings of the Institute of Civil Engineers: 19(6501): 473–478, 1961.

[20] Stafford Smith, B., “Behavior of square infilled frames.” Journal of the Structural Division (ASCE): 92(1): 381–403, 1966.

[21] Hendry, A., “Structural Brickwork.” Macmillan, London, 1981.

[22]Paulay, T., & Priestley, M. J. N., “Seismic Design of Reinforced Concrete and Masonry Buildings.” John Wiley & Sons, Inc., Toronto, 1992.