Analisis Simpangan Antar Lantai Tingkat Pada Gedung Tidak Beraturan Dengan Pembebanan Gempa Metode Riwayat Waktu

Abstract

The city of Yogyakarta is an area prone to both tectonic and volcanic earthquakes. The buildings in Yogyakarta will always be faced with the earthquake disaster. One method of dynamic earthquake loading analysis is the time history method. This study analyzes drift story at one of the hotels building in Yogyakarta by the time history method using 5 BMKG Yogyakarta ground motions database and 5 overseas ground motions database that are characteristic similar to the earthquake in Yogyakarta on May 27, 2006. The analysis was done by modeling the hotel building on the SAP2000 program. Then determine the loading of dead load, life, roof, wind, and earthquake. All earthquake recordings are matched according to spectrum response of Yogyakarta based on SNI-1726-2012 earthquake regulation. The matching process of earthquake recording is done by Seismomatch program. Calculation of drift story analysis based on SNI-1726-2012 earthquake regulation. The drift analysis was conducted on 5 Yogyakarta ground motions database and 5 overseas ground motions database, each of which was taken maximum drift value. These results are compared and controlled based on the drift story requirement in the SNI-1726-2012 earthquake regulation. The results of the analysis show that overseas ground motions of Superstition Hills-02 gave the biggest drift effect. Each BMKG Yogyakarta ground motions gives the biggest drift effect for different drift directions. There is a maximum drift difference between BMKG Yogyakarta and overseas earthquake recording loading ranges from 0.036 cm - 0.545 cm for all floors. The maximum drift value for overseas ground motions database is greater than BMKG Yogyakarta. The result of drift control based on SNI-1726-2012 indicates that all floors in the hotel building fulfill the requirement of drift story limit (Δa) both when loading with ground motions database of BMKG Yogyakarta and abroad. For further research, it is expected to use more ground motions database because dynamic analysis requires repeated calculations.