Seismic Behavior Analysis Considering Soil Structure Interaction of RC Multistory Buildings in Halabja City

  • Hunar Farid Hama Ali Department of Building and Construction, College of Engineering, University of Halabja, Halabja, Kurdistan Region, Iraq
  • Rabar H. Faraj Department of Building and Construction, College of Engineering, University of Halabja, Halabja, Kurdistan Region, Iraq
  • Kamaran Mohammed Kareem Department of Building and Construction, College of Engineering, University of Halabja, Halabja, Kurdistan Region, Iraq
Keywords: Soil types, Soil structure interaction, Multistory building, Equivalent static method, Dynamic response spectrum analysis, seismic analysis


Response of structures to seismic loads measures the degree of safety of the structures. In order for buildings to be under a more realistic circumstance, it is essential to consider the effect of Soil – Structure – Interaction (SSI) in the analysis of the building subjected to seismic loads. In this study, three samples of typical buildings with six, eight and ten stories are chosen with and without the effect of SSI using both equivalent static method and dynamic response spectrum analysis. For each method, the five different soil categories (SA, SB, SC, SD, SE) are examined to illustrate the effect of the foundation soil on the buildings subjected to a seismic load. The results show that no modifications can be observed in rock foundations with or without the consideration of SSI. On the contrary, the effect on SSI can increase the displacement in low stiffness soils particularly soil type (SE). Similarly the natural time period of the buildings increase significantly with decreasing the soil stiffness. 


AKTER, M. S., AHMED, M. & EUN, J.-B. 2010. Solvent effects on antioxidant properties of persimmon (Diospyros kaki L. cv. Daebong) seeds. International Journal of Food Science & Technology, 45, 2258-2264.
AL-REFAI, F. 2006. Isolation and identification of fungi from cosmetic using some plant extracts as preservative agents. Ph. D. Thesis. College of Science. Mosul Univ. Iraq.
BABA, S. A. & MALIK, S. A. 2014. Evaluation of antioxidant and antibacterial activity of methanolic extracts of Gentiana kurroo royle. Saudi J Biol Sci, 21, 493-8.
BHAGAT, J., LOBO, R., PARMAR, V. & BALLAL, M. 2011. In vitro Free Radical Scavenging Potential of Indian Habitant Anisochilus carnosus (LF) Wall. Chinese journal of natural medicines, 9, 456-460.
BHANDARI, J., MUHAMMAD, B., THAPA, P. & SHRESTHA, B. G. 2017. Study of phytochemical, anti-microbial, anti-oxidant, and anti-cancer properties of Allium wallichii. BMC Complement Altern Med, 17, 102.
BRAND-WILLIAMS, W., CUVELIER, M.-E. & BERSET, C. 1995. Use of a free radical method to evaluate antioxidant activity. LWT-Food science and Technology, 28, 25-30.
BRYAN, J. E. 2002. Bulbs, Portland, Oregon, U.S.A., Timber Press.
BRYAN, J. E. 2005. Pocket Guide to Bulbs ( Pocket Guides).pdf>, Portland, Oregon, U.S.A., Timber Press.
CHEN, C., LIU, C.-H., CAI, J., ZHANG, W., QI, W.-L., WANG, Z., LIU, Z.-B. & YANG, Y. 2018. Broad-spectrum antimicrobial activit ACI 318M-14-Building Code Requirements for Structural Concrete and Commentary.
American Society of Civil Engineers, & Structural Engineering Institute. Minimum Design Loads on Buildings and Other Structures Standards Committee. (2016). Minimum design loads for buildings and other structures. American Society of Civil Engineers.
ASCE 41-17- Seismic Evaluation and Retrofit of Existing Buildings.
Bowles, Joseph E. Engineering properties of soils and their measurement. McGraw-Hill, Inc, 1992.
CSI, C. (2016). analysis reference manual for SAP2000, ETABS, and SAFE. Computers and Structures, Inc., Berkeley, California, USA.
Faraj, Rabar Hama Ameen., 2018. A Case Study: Effect of Soil-Flexibility on the Seismic Response of Reinforced Concrete Intermediate-Rise Regular Buildings in Halabja City. Eurasian Journal of Science & Engineering 4 (1), pp. 149-156. https://doi: 10.23918/iec2018.09.
Galal, K. and Naimi, M., 2008. Effect of soil conditions on the response of reinforced concrete tall structures to near‐fault earthquakes. The Structural Design of Tall and Special Buildings, 17(3), pp.541-562.
Kabtamu, H.G., Peng, G. and Chen, D., 2018. Dynamic Analysis of Soil Structure Interaction Effect on Multi Story RC Frame. Open Journal of Civil Engineering, 8(4).
Kraus, I. and Džakić, D. (2013) Soil-Structure Interaction Effects on Seismic Behavior of Reinforced Concrete Frames. SE-50EEE, International Conference on Earthquake Engineering, Skopje, 29-31 May 2013, Paper Number: 645073.
Ministry of Construction and Housing-Centeral Organaziation for Standarazation and Quality Control. (2014) "Seismic Code - Iraqi Building Code 303," Ministry of Construction and Housing-Federal Government, Baghdad.
Raheem, S.E.A., Ahmed, M.M. and Alazrak, T.M.A. (2015) Evaluation of Soil-Foundation-Structure Interaction Effects on Seismic Response Demands of Multi-Story MRF Buildings on Raft Foundations. International Journal Advanced Structural Engineering, 7, 11-30.
Reza Tabatabaiefar, S.H., Fatahi, B. and Samali, B., 2012. Seismic behavior of building frames considering dynamic soil-structure interaction. International Journal of Geomechanics, 13(4), pp.409-420.
S.S. Patil, M. G. Kalyanshetti, Dyawarkonda S. S, 2016. Parametric Study Of R.C Frames With Raft Foundation Considering Soil Structure Interaction Using Spring. International Journal of Scientific Development and Research (IJSDR), Volume 1, Issue 4, pp53-67.
Samali, B., Fatahi, B. and Tabatabaiefar, H.R., 2011. Seismic behaviour of concrete moment resisting buildings on soft soil considering soil-structure interaction. Incorporating Sustainable Practice in Mechanics of Structures and Materials: Proceedings of the 21st Australian Conference on the Mechanics of Structures and Materials, held in Melbourne, Australia, 7- 10 December 2010
Tabatabaiefar, H.R. and Massumi, A., 2010. A simplified method to determine seismic responses of reinforced concrete moment resisting building frames under influence of soil–structure interaction. Soil Dynamics and Earthquake Engineering, 30(11), pp.1259-1267.
How to Cite
Ali, H., R. H. Faraj, and K. Mohammed Kareem. “Seismic Behavior Analysis Considering Soil Structure Interaction of RC Multistory Buildings in Halabja City”. ZANCO Journal of Pure and Applied Sciences, Vol. 31, no. s3, Aug. 2019, pp. 52-60, doi:10.21271/ZJPAS.31.s3.8.