ANALYTICAL FRAGILITY CURVES FOR REINFORCED CONCRETE BUILDING USING SINGLE POINT SCALED SPECTRUM MATCHED GROUND MOTION ANALYSES
DOI:
https://doi.org/10.11113/mjce.v28.15983Keywords:
Ground Motion Scaling, Fragility Curves, Time History, Reinforced ConcreteAbstract
Seismic performance is obtained for a five-storied reinforced concrete frame building performing non-linear dynamic time history analyses. Performance of the building was obtained as a mean of fragility function of spectral acceleration. Earthquake ground motion records are selected from online source considering local earthquake faults scenario proposed in Comprehensive Disaster Management Program (CDMP) and then scaled to fit with Bangladesh National Building Code (BNBC) 1993 design response spectra. Since the structure is considered as typical reinforced concrete ordinary moment resisting frame located in Bangladesh, mechanical properties and other associated parameters are chosen according to Bangladeshi perspective. Each ground motion spectrum is matched with design code spectrum at fundamental time period of the building. Non-linear static pushover analysis is performed to determine damage states from pushover curve. Four damage states (from slight to collapse) are defined based on simplified assumptions. A set of dynamic time history analyses are carried out in order to obtain probability density function of the displacement demand correspond to different level of ground motions. Cumulative distribution of each associated damage states allows deriving fragility curves. Finally four fragility curves are obtained for four damge grades (slight, moderate, severe and collapse).References
Ali and Chowdhury J.R. (2002) Earthquake Hazard in Bangladesh and Measures for Mitigation,
Weekend Independent, 4 January, 2002
Ansary, M.A. (2006) Installation of an Earthquake Monitoring System for Bangladesh, Safer
Cities Project, COSMOS-WSSI.
ATC (1996) Seismic Evaluation and Retrofit of Reinforced Concrete Buildings, Applied
Technology Council, ATC- 40.
Banglapedia (2015) en.banglapedia.org/index.php?title=Earthquake
Bilham, R. (2004) Earthquakes in India and the Himalaya: tectonics, geodesy and history,
Annals of Geophysics,Vol. 47, N. 2/3, 839-858
BNBC (1993. Bangladesh National Building Code, Housing and Building Research Institute,
Dhaka, Bangladesh.
Bolt, B.A (1987) Site Specific study of seismic intensity and ground motion parameters for
proposed Jamunariver bridge, Bangladesh, A report of Jamuna bridge study.
BRTC-BUET (2010) Bureau of Research Testing and Consulancy, Bangladesh University of
Engineering and Technology, Updating of National Building Code 1993, Inception Report.
CDMP (2009) Time-predictable fault modelling for seismic hazard and vulnerability assessment
of Dhaka, Chittagong and Sylhet, Comprehensive Disaster Management Programme,
Ministry of Food and Disaster Management, Bangladesh
Chowdhury, J.R. (1993) Seismicity in Bangladesh, Incede Report 5, Bangkok
(http://cidbimena.desastres.hn/docum/crid/Nov-Dic2003/pdf/eng/doc6965/doc6965-a.pdf)
CSI (2012) Structural Analysis Program 2000 Version 15 integrated finite element analysis and
design of structures basic analysis reference manual. Computers and Structures Inc.
Fahjan, Y. M. (2008) Selection and Scaling of Real Earthquake Accelerograms to Fit the Turkish
Design Spectra, Teknik Dergi Vol. 19, No. 3, pp: 4423-4444
FEMA 273 (1997) NEHRP Guidelines for the Seismic Rehabilitation of Buildings, Federal
Emergency Management Agency
GEM (2014), A Global Earthquake Model, GEM Foundation, Pavia, Italy.
Heo, Y., Kunnath, S. K. and Abrahamson, N. (2011), Amplitude-Scaled versus SpectrumMatched
Ground Motions for Seismic Performance Assessment, J. Struct. Eng.
137:278-288.
Karbassi, A. and Lestuzzi P. (2014) Seismic risk for existing buildings in Switzerland –
development of fragility curves for masonry buildings, Ecole Polytechnique Fédérale de
Lausanne, Lausanne, Switzerland, report prepared under contract to the Federal Office for
the Environment (FOEN), 55 p.
Lagomarsino S, Giovinazzi S (2006) Macroseismic and mechanical models for the vulnerability
and damage assessment of current buildings, Bull EarthqEng 4:415–443
Milutinovic ZV, Trendafiloski GS (2003) Vulnerability of current buildings RISK-UE project of
the EC: an advanced approach to earthquake risk scenarios with applications to different
European towns
Morino, M., Maksud Kamal, A.S.M., Akhter, S.H., Rahman, M.J., Alic, R.M.E., Talukder, A.,
Khanc, M.M.H., Matsuod, J. and Kanekod, F. (2014). A paleo-seismological study of the
Dauki fault at Jaflong, Sylhet, Bangladesh: Historical seismic events and an attempted
rupture segmentation model, Journal of Asian Earth Sciences, 91: 218–226.
Oldham, R.D. (1899) Report on the Great Earthquake of 12 June 1897, Mem. Geol. Soc. India,
Geol. Surv. India, 29, pp. 379.
PEER NGA (2015) PEER Ground Motion Database - PEER Center (ngawest2.berkeley.edu/)
Risk-UE (2004) An advanced approach to earthquake risk scenarios with applications to
different European towns, Contract number: EVK4-CT-2000-00014 Project of the European
Commission
Rota, M., Penna, A. and Magenes, G (2010) A methodology for deriving analytical fragility
curves for masonry buildings based on stochastic nonlinear analyses, Engineering Structures
(2010) 1312-1323
SDMC (2009) SAARC workshop on earthquake risk management in South Asia, SAARC
Disaster Management Center, 8-9 October, Islamabad, Pakistan
Steckler, M. S., Mondal, D. R., Akhter, S. H., Seeber, L, Feng, L., Gale, J., Hill, E. M. and Howe,
M. (2016) Locked and loading megathrust linked to active subduction beneath the IndoBurman
Ranges, Nature Geoscience, DOI: 10.1038/NGEO2760
