Assessment of an RC existing hospital building with special moment frame using fragility curve

Subject Areas : Structural Engineering

Farhad  Cheraghi ¹ (Department of Civil Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran)
Abdolreza  S. Moghadam ² (Associate Professor, International Institute of Earthquake Engineering and Seismology, Department of Earthquake Engineering, Tehran, Iran)

Received: 2017-04-18 Accepted : 2017-08-07 Published : 2018-03-01

Keywords: Fragility curve, Incremental dynamic analysis, Vulnerability, SeismoStruct,

Abstract :

In this study, an existing hospital structure has been evaluated with incremental dynamic analysis (IDA). This building is accommodated in Karaj with soil type II. At first, two 2-D frames along X, Y direction are selected. Then, five performance levels are determined according to “Rehabilitation Code for Existing Buildings (Publication No. 360) including Immediate Operational (IO), Limited Damage (LD), Life Safety (LS), Limited Life Safety (LLS), and Collapse Prevention (CP). The Peak Ground Acceleration (PGA) as earthquake intensity and relative displacement (Drift) as the failure index has been used for incremental dynamic analysis method via seismo-struct software. In the next step, the probability of reaching or exceeding of the structure to a limit state was determined. Results of incremental dynamic analysis for fragility curves show that the probability of reaching or exceeding from IO level is approximately . This probability is almost for LD, for LS, for LLS, and for CP. It has been signified that the probability of fragility is raised with increasing in PGA

References:

[1]            Pahlavan, H., Shankar ,M. Probabilistic Seismic Vulnerability Assessment of the Structural Deficiencies Iranian in-Filled RC Frame Structures, 2015.

[2]            Younesi, M. Development of Fragility Curves for Seismic Evaluation of Steel Structures. Master's thesis, Faculty of Engineering, University of Aba,2013.

[3]            Nielson, B.G. Analytical Fragility Curves for Highway Bridges in Moderate Seismic Zones. A Thesis presented for PhD degree. School of Civil and Environmental Engineering Georgia Institute of Technology, p 400, 2005.

[4]            Research Center for Roads, Housing and Urban Development. The Code for the Design of Buildings against Earthquake, Standard 2800, Fourth Edition, pp 212-253, 2014.

[5]            Siti Nur, A S. Fadzli, M.N. Fragility Curve for Low- And Mid-Rise Building in Malaysia, pp 873-878, 2015.

[6]            Papilia, A. Seismic Fragility Curves for Reinforced Concrete Building. MSc Thesis, University of Patras, p 284, 2011.

[7]            H‌o‌s‌s‌e‌i‌n‌i, M.; Majd, M. D‌e‌v‌e‌l‌o‌pment F‌r‌a‌g‌i‌l‌i‌t‌y Curves for R‌e‌g‌u‌l‌a‌r Steel B‌u‌i‌l‌d‌i‌n‌g‌s w‌i‌t‌h X-Bracing Using N‌o‌n‌l‌i‌n‌e‌a‌ Time H‌i‌s‌t‌o‌r‌y A‌n‌a‌l‌y‌s‌e‌s. Sharif Civil Engineering, pp 1-13, 2010.

[8]            Strategic Oversight Deputy, Technical Executive Affairs. Instruction for Seismic Rehabilitation of Existing Buildings, (Concrete Buildings), No. 363-2, pp 334, 2008.

[9]            Strategic Oversight Deputy, Technical Affairs. Instruction for Seismic Rehabilitation of Existing Buildings, No. 360, p 400,2013.

[10]            Porter, K. A Beginners Guide to Fragility, Vulnerability and Risk. University of Colorado Boulder and SPA Risk LLC, Denver CO USA, 2017.

[11]            Nor Hayati A. H., Nor Mayuze Mohamad. Seismic Assessment of a Full-Scale Double-Story Residential House Using Fragility Curve. science direct, 54; pp 207-221,2013.

[12]            Ibrahim, Y.E., El-Shami, M.M.  Seismic Fragility Curves for Mid-Rise Reinforced Concrete Frames in Kingdom of Saudi Arabia. The IES Journal Part A: Civil & Structural Engineering, Vol. 4(no. 4): p. pp. 213-223, 2011.