Vulnerability of public buildings in Sabah subjected to earthquake by finite element modelling

• Main Authors: Adnan, A. (Author), Ibrahim, A. (Author), Ismail, R. (Author)
• Format: Article
• Language: English
• Subjects: Beam - column connection; Beam elements; Building design; Building vulnerability; Concrete buildings; Damage level; Design capacity; Dynamic analysi; Earthquake intensity; Earthquake load; Earthquakes; East Malaysia; Finite element method; Finite element modeling; Finite element modelling; High rise building; Internal forces; Malaysia; Moment resisting frames; Non-linear analysis; Non-structural damage; Philippines; Plastic hinges; Public buildings; Public works; Reinforced concrete; Seismic demand; Seismic demands; Seismic design; Seismic vulnerability; Structural damages; Sumatra; Tall buildings; Time history analysis; Yield points
• Online Access: View Fulltext in Publisher; View in Scopus
• ISBN: 18777058 (ISSN)
• DOI: 10.1016/j.proeng.2011.11.138

This paper presents the vulnerability of public buildings in Sabah which are subjected to earthquakes from Sumatra and the Philippines. Tremors in Peninsular Malaysia and East Malaysia due to Sumatra and Philippine earthquakes have been reported several times. Engineers are concerned of the seismic vulnerability of public buildings due to lack of earthquake consideration in Malaysia's building design procedure. 8 (eight) reinforced concrete buildings which are mostly categorized as moment resisting frames has been selected for vulnerability study. A case study has been conducted on low rise, medium rise, and high rise buildings. The buildings are analyzed using Finite Element Modeling (FEM) under different types of analyses including Time History Analysis (THA) considering low to medium earthquake intensities. Different intensities of earthquake load, 0.05g, 0.10g, 0.15g and 0.20g are applied to the structures to know the maximum allowable earthquake load intensities for the buildings. In the non-linear analysis of modal frames, it indicates that most of the buildings are categorised in the moderate damage level where there is no structural damage but some non-structural damage are expected. The performances of the structure are shown by the yield point at beam-column connections where the internal forces at beam elements exceed the design capacity of the beams. The Labuan Airport building was performed the early yielding point at 3.85 sec for column element at intensity 0.05g. The study indicates that the plastic hinge initially formed on the column at the lower storey level for both low and high rise building frames. © 2011 Published by Elsevier Ltd.