Comparison of Direct Displacement-based Design with Force-based Design for Lead Rubber Bearing base-isolated buildings.
Abstract
Force-based design (FBD) is the conventional method; it mainly focuses on seismic force on the structure through which the building will be designed. It has limitations such as assumed member stiffness and reduction factors through which time period and seismic forces on the structure are determined and structure will be designed. The performance level is directly related to displacement but not to strength. To overcome these limitations Direct displacement-based design (DDBD) came as an efficient alternative. In DDBD initially, the target displacement is defined through which the stiffness of members and seismic forces acting on the building will be determined. In this paper, the performance of G+3 and G+5 lead rubber bearing base-isolated building is evaluated using FBD and DDBD method, and a comparison is made. The building is designed according to Indian standards with IS 1893 (part 1) 2016 for seismic design and IS 456 (2000) for all RC frame members. Non-linear pushover analysis is carried out using SAP2000 for finding out a structural performance like base shear and inter-story drift ratio (IDR%.) This paper concludes that the DDBD method is more reliable and effective compared to the FBD method for LRB base-isolated buildings.
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References
Calvi, G.M., Priestley, M.J.N. and Kowalsky, M.J., 2007. Displacement based seismic design of structures. In New Zealand Conference on Earthquake Engineering (p. 740). IUSS press.
Cardone, D., Dolce, M. and Palermo, G., 2008, October. Force-based vs. direct displacement-based design of buildings with seismic isolation. In The 14th World Conference on Earthquake Engineering (Vol. 1).
Cardone, D., Palermo, G. and Dolce, M., 2010. Direct displacement-based design of buildings with different seismic isolation systems. Journal of Earthquake Engineering, 14(2), pp.163-191.
Code, P., 2005. Eurocode 8: Design of structures for earthquake resistance-part 1: general rules, seismic actions and rules for buildings. Brussels: European Committee for Standardization.
FEMA, F., 2006. 445. Next-Generation Performance-Based Seismic Design Guidelines Program Plan for New and Existing Buildings. Redwood City.
FEMA, N., 2000. NEHRP, Prestandard and commentary for the seismic rehabilitation of buildings (No. 356). Report.
Kelly, T.E., 2001. “Base isolation of structures: Design guidelines.” Auckland: Holmes Consulting Group Ltd.
Lashgari, M., 2014. Comparative study of base-isolated and fixed-base buildings using a damage/cost approach.
Mondal, G. and Jain, S.K., 2005. Design of non-structural elements for buildings: A review of codal provisions. Indian concrete journal, 79(8), pp.22-28.
Pettinga, J.D. and Priestley, M.N., 2005. Dynamic behaviour of reinforced concrete frames designed with direct displacement-based design. Journal of Earthquake Engineering, 9(spec02), pp.309-330.
Priyanka, B. and Mayur, B., Analysis and Capacity Based Earthquake Resistance Design of Multy Bay Multy Storeyed Residential Building. Int. Journal of Engineering Research and Applications www. ijera. com ISSN: 2248, 9622, pp.78-84.
Seismic Safety Council IS:1893-Part 1, 2016. Criteria for earthquake resistant design of structures, part-1 general provisions and building sixth revision. New Delhi: Bureau of Indian standards.
Sharma, A., Tripathi, R.K. and Bhat, G., 2020. Comparative performance evaluation of RC frame structures using direct displacement-based design method and force-based design method. Asian Journal of Civil Engineering, 21(3), pp.381-394.
Sharma, A., Tripathi, R.K. and Bhat, G., 2020. Seismic assessment of RC building frames using direct-displacement-based and force-based approaches. Innovative Infrastructure Solutions, 5(3), pp.1-12.
Vidot-Vega, A.L. and Kowalsky, M.J., 2013. Drift, strain limits and ductility demands for RC moment frames designed with displacement-based and force-based design methods. Engineering structures, 51, pp.128-140.
Yan, L. and Gong, J., 2019. Development of displacement profiles for direct displacement based seismic design of regular reinforced concrete frame structures. Engineering Structures, 190, pp.223-237.
Ye, K., Xiao, Y. and Hu, L., 2019. A direct displacement-based design procedure for base-isolated building structures with lead rubber bearings (LRBs). Engineering Structures, 197, p.109402.
Zameeruddin, M. and Sangle, K.K., 2016, May. Review on Recent developments in the performance-based seismic design of reinforced concrete structures. In Structures (Vol. 6, pp. 119-133). Elsevier.
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