Abstract
This paper presents a simplified method in the seismic vulnerability assessment of reinforced concrete (RC) buildings based on proposed seismic vulnerability index (SVI) methodology. The employed procedure is derived with some modifications from the Italian GNDT and the European Macro-seismic approaches. Eight parameters were modeled in three distinct vulnerability classes to estimate the vulnerability indices of RC structures. The vulnerability classes were categorized based on the earthquake resistant design (ERD) defined as; (Low, Moderate, and High)-ERDs. Nonlinear time history analysis (NL-THA) and nonlinear static analysis (NL-SA) were carried out to define the weight of each parameter in order to calculate the seismic vulnerability index in a specific intensity (PGA) of an earthquake event. Knowing that it ranges from 0 to 1 from less vulnerable to most vulnerable with respect to the seismic intensity. In addition, the engineering demand parameter (EDP) used to determine the vulnerability index as the maximum top displacement of the structure. After determining the (SVI), The mean damage states were developed to evaluate the estimated physical damage of buildings in distinct seismic intensities.•This simplified methodology helps to manage and implements strategies for the safety of the communities before earthquake takes place by investigating the vulnerability classes for each building type.•Modeling the parameters that have an influence on the structural behavior without considering the past-damages observations through an analytical approach.•Developing the seismic vulnerability index can reduce or limit the role of the rapid visual screening methods, which is based on expert opinion decisions, and depends on observations of damages caused by earthquakes, and can be a useful framework criterion in earthquake filed.
Highlights
What happened recently in East Malaysia is such a prove that Malaysia classified as having low to moderate seismicity and must consider the effect of earthquake loading in future edition of building design code [1]
Most of the recent studies were focusing on the seismic vulnerability of masonry structures, and few others were focused on steel structures [5,6,7,8]
In Portugal the GNDT II approach was used to assess the vulnerability of the masonry structures which overwhelmed in the Portuguese cities such as; Horta, Seixal, Faro and Coimbra, using the empirical vulnerability index, while in Spain the European Macroseismic approach was applied [9,10,11]
Summary
The present methodology deals with the development of seismic vulnerability index (SVI) for a set of existing RC buildings in Malaysia using the Non-linear time history analysis (NL-THA) based on an array of earthquake ground motion records, and Non-linear static analysis (NL-SA) based on performance limit states and the plastic hinges formation affecting the structure, as well as to develop the vulnerability or fragility curves. Phase 7: Calculate the Seismic Vulnerability Index (SVI) by applying the Nonlinear static analysis (NL-SA) based on plastic hinges formation in beams and columns.
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