KAJIAN RESPON GEMPA DAN KERENTANAN BANGUNAN PUBLIK BERDASARKAN DATA MIKROTREMOR DI ACEH UTARA

Analysis of building and soil interactions is an essential part construction appraisal. In this article, the response buildings to earthquakes identified by determining natural frequency value on each floor, as well examining relationship between building. This article will also identify attenuation factors for type public that have different functions, namely school campus buildings, determine effect resonance infrastructure. Analyzed include rest area elementary junior high schools, campuses. The variable number floors aspect be observed. Microtremor data research utilizes a near-broadband seismometer. vibration recording device placed ground, reviewed are campus. Data collection was carried out when condition not loaded, measurements were made floor many 5 points 1 point ground 30 minutes at measurement point. methods used Horizontal-to-Vertical Spectral Ratio (HVSR), Fast Fourier Transform (FFT), Floor (FSR), Random Decrement Method (RDM). calculation results show in range 0.7 0.85 Hz except location reaches 6.868 Hz, reason dominated hard rocks. (f0) 2.557 4.292 low meets requirements SNI, damping ratio 2.002 4.974%, category standard 2 5%, five review level, period safe limit according SNI 17-02-2012 vulnerability index low.