Spectral displacement (SD) of banda aceh’s soft soil for seismic vulnerability assessment

¹ Syiah Kuala University, Faculty of Engineering, Department of Civil Engineering, 23111 Banda Aceh, Indonesia
² Syiah Kuala University, Faculty of Engineering, Program Study of Geological Engineering, 23111 Banda Aceh, Indonesia

^* Corresponding author: nora.abdullah@unsyiah.ac.id

Abstract

Reliable spectral displacement (SD) in a wide range of response periods is crucial in seismic vulnerability assessment for Banda Aceh-Indonesia as the city is founded on a thick-soft soil. This SD is excellent for estimating building drift ratio from which the vulnerability of building is assessed. SD can be obtained from conversion of the acceleration spectra (converted SD) and site response analysis (analyzed SD). In this paper, both converted- and analysed-SDs are developed for Banda Aceh’s soft soil case using three historical seismic events of the 2012 Simeulue II, the 2013 Mane-Geumpang, and the 2013 Bener Meriah earthquakes and three soil models from which acceleration-displacement response spectrum (ADRS) of Banda Aceh’s soft soil is proposed. This proposed ADRS is compared to the generic response spectra of Centre of Research and Development of Housing and Settlement (PUSKIM) Indonesia. It can be concluded that the Proposed ADRSs can be used as another source in determining the performance of a building beside the PUSKIM ADRSs. Furthermore, the developed SDs were used to calculate the drift of 2-, 3-, and 4-storey typical shop-house buildings at Banda Aceh-Indonesia.