THE SEISMIC RESPONSE OF STRUCTURAL OUTRIGGER SYSTEMS IN TALL BUILDING

الاستجابة الزلزالية لأنظمة المدادات الهيكلية في المباني العالية

  • eman el-gharbawy zagazig university
  • Mohamed Husain
  • Hilal Hassan
  • Heba Mohamed
  • eman el-gharbawy
Keywords: lateral stiffness, reinforced concrete outrigger system, time history analysis, MIDAS-GEN

Abstract


One of the advanced structural systems that have been applied in tall buildings to improve the building strength during quake loads is the outrigger system. For that, this research is interested to study different structural system as a vierendeel system and wall beam system when applied them as outrigger which is connected between the internal core walls and the external columns in one or two stories. The outrigger position changed through the tallness of 40 story building and the building response is examined in this research under El-Centro time history earthquake load. All the models are analyzed in Midas-Gen program and the research conclusions were concluded to help researchers to provide more in the field of civil engineering. The inferred parameters as storey drift, story drift ratio and base storey overturning moment are plotted in graphs between the storey number and the outrigger position for each outrigger system. The results showed that, the one storey wall beam structural system is better than two stories vierendeel structural system when these systems applied as outrigger system. The best position for one storey outrigger is about 0.45 of the total building height and for the two stories outrigger, the .20 and .45 of the total building height are the best positions. Overall, the outrigger system is an effective structural system to make the tall buildings withstand through the earthquake loads.

References

[1] Ahmed, J., and Yamini Sreevalli. 2014. Application of Outrigger in Slender High Rise Buildings to Reduce Fundamental Time Period. 6th IRF International Conference, Chennai, India, July.
[2] Alok Rathore1 and Dr. Savita Maru. 2017. Dynamic Analysis of outrigger structural system in tall building. International Journal of Modern Trends in Engineering & Research, 4(12), pp.199–208. DOI: 10.21884/ijmter.2017.4403.jzekk
[3] Choi, H. S., Ho, G., Joseph, L., & Mathias, N. 2017. Introduction to Outrigger Systems. Outrigger Design for High-Rise Buildings, pp.13–24. DOI: 10.1201/9781315661971-7.
[4] Fatima, Tabassum, Sabrina Fawzia, and Azhar Nasir. 2011. Study of the effectiveness of outrigger system for high-rise composite buildings for cyclonic region. International Conference on Electrical, Computer, Electronics and Communication Engineering, Australia.
[5] Gawate, Alpana L., and J. P. Bhusari. (2015). "Behavior of Outrigger Structural System for High-rise Building." International Journal of Modern Trends in Engineering and Research, e-ISSN 2349-9745.‏
[6] Herath, N., et al. (2009). Behaviour of outrigger beams in high rise buildings under earthquake loads. Australian Earthquake Engineering Society Conference, Australia.‏
[7] Kamath, K., 2012. A Study on Static and Dynamic Behavior of Outrigger Structural System for Tall Buildings. Bonfring International Journal of Industrial Engineering and Management Science, 2(4), pp.15–20. DOI: 10.9756/bijiems.1655.
[8] Midas, I. T. "Midas Gen on-line manual: general structure design system." MIDAS Infor mation Technology. Available at: http://manual.midasuser.com/EN_Common/Gen/855/index.htm
[9] Mistry, K. Z., & Dhyani, D. J. Optimum Outrigger Location in Outrigger Structural System for High Rise Building. International Journal of Advance Engineering and Research Development, 2(05). DOI: 10.21090/ijaerd.020536.
[10] Taranath, B.S., 2009. Reinforced Concrete Design of Tall Buildings), pp.685–792. DOI:10.1201/9781439804810-c8.
[11] Paul, G., & Agarwal, P. (2012). Experimental verification of seismic evaluation of RC frame building designed as per previous IS codes before and after retrofitting by using steel bracing. Asian Journal of Civil Engineering (building and housing), 13 (2), PP. 165-79.‏‏
[12] Ragite, N.C., 2019. Outrigger Structural System in High Rise Building to Control Deflection: A Review. International Journal for Research in Applied Science and Engineering Technology, 7(4), pp.3490–3493. DOI: 10.22214/ijraset.2019.4587.
Published
2021/07/22
Section
Original Scientific Paper