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Dynamic characteristics of site and existing low-rise RC building for seismic vulnerability assessment

Kamarudin, A.F. and Daud, M.E. and Ibrahim, A. and Ibrahim, Z. and Koh, H.B (2014) Dynamic characteristics of site and existing low-rise RC building for seismic vulnerability assessment. International journal of geology, 8. pp. 28-38. ISSN 1998-4499

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Seismic performance and vulnerability studies of existing reinforced concrete (RC) buildings without seismic design provision in Peninsular Malaysia have been started to be given serious attention. Previous earthquakes from neighboring country of Sumatra and local earthquake events in Bukit Tinggi had shaken many low-rise to high rise buildings and emerged panic. Insufficient structure durability for excessive lateral resistance, inappropriate building configuration, site-structure resonance effect, poor soil conditions, ground topographic surfaces irregularities etc. may be associated to the building vulnerabilities against seismic threat. In this study, ambient noise measurements were conducted for dynamic characteristics and resonance potential of site and an existing 4-storey RC primary school building of SK Sri Molek in Batu Pahat-Johor (Peninsular Malaysia). Estimations of building capacity and sediment thickness based on the microtremor findings were also discussed. The predominant building frequencies were found between 4.20 Hz and 4.35 Hz in transverse and longitudinal directions, while 2.69 Hz to 3.20 Hz for the ground frequencies, at medium level of resonance potential was estimated. Good agreement and closer prediction of sediment thickness shown in comparison with boreholes data. Since none of specific design response spectra (RSA) available in the study area, estimation of base shear force using equivalent static analysis (ESA) and Eurocode 8 has been done by substituting the RSA developed in Kuala Lumpur region. The ultimate horizontal load based on conventional design load combination found to be exceeded 1.5% as provided in BS 8110 which may lead to structural damages.

Item Type: Article
Uncontrolled Keywords: Microtremor; dynamic characteristics; resonance potential; base shear force
Subjects: T Technology > TH Building construction > TH1-844 Building construction
Divisions: Faculty of Civil and Environmental Engineering > Department of Structural and Material Engineering
Depositing User: Mrs Hasliza Hamdan
Date Deposited: 13 Aug 2018 03:33
Last Modified: 13 Aug 2018 03:33
URI: http://eprints.uthm.edu.my/id/eprint/9746
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