The effect of tsunami loads on Pasar Raya Inpres Block III building in Padang City based on FEMA P-646

Fauzan Fauzan,Nurpadila Siregar,Zev Al Jauhari,Febrin Anas Ismail,A Awaludin,S Siswosukarto,T Matsumoto,K Nur Rahma Putri,H Jonkers,A Fajar Setiawan,S Pessiki

doi:10.1051/matecconf/201925803020

Abstract

Pasar Raya Inpres Block III building in Padang City is a traditional market building that located in the high seismic zone and prone to tsunami. The building consists of five floors that planned to be used as a vertical evacuation for the surrounding community. However, in designing the building structure, it is only planned to strongly against the earthquake load and it does not take into account the tsunami load. In this study, the effect of tsunami load on the building was investigated. This building will be analyzed and modeled by using ETABS v.9.7.1 software. The applied earthquake load in the building refers to SNI 1726:2012, while the tsunami loads refer to FEMA P-646/2012. From the analysis results, it was found that the columns of the building are capable of restrained the tsunami loads, but the beams were not strong enough to withstand the tsunami loads. The beam failure occurred due to the small load-bearing capacity of the beams against the tsunami loads includes buoyant force, additional gravity load, and uplift hydrodynamic force. Furthermore, the retrofitting of the building should be carried out, especially on the beams of the building before being used as a tsunami vertical evacuation building.

Highlights

Padang City is the third largest city in Sumatera Island that located along the west coast of Sumatera
The analysis results on the effect of tsunami loads on the building will be presented in term of the inter-story drift, internal forces, load-bearing capacity of the structural elements and foundation capacity
Pasar Raya Inpres Block III Padang building was strong against earthquake load, but it is not strong enough against tsunami loads

Summary

Introduction

Padang City is the third largest city in Sumatera Island that located along the west coast of Sumatera. It appears before the border of Eurasia and Indo-Australia plates, and the area is at a high risk of earthquake and tsunami disaster. This condition makes Padang City very vulnerable to tsunami hazard [1]. It is very complicated to evacuate many people (more than 400,000 population) in a short period to the tsunami safe zone. The residents would not have enough time to reach high ground. The transportation facilities would not help due to the public panic met with the number of vehicles will only cause traffic [2,3]

Methods

Results

Conclusion