Analisis Kerentanan Struktur Gedung C Rumah Sakit Rujukan Regional Kota Langsa Menggunakan Metode Pushover Analysis

MEILANDY PURWANDITO; HAIKAL FAJRI; IRWANSYAH .; MUHAMMAD AGUSSALIM

doi:10.29103/tj.v13i2.964

Analisis Kerentanan Struktur Gedung C Rumah Sakit Rujukan Regional Kota Langsa Menggunakan Metode Pushover Analysis

MEILANDY PURWANDITO, HAIKAL FAJRI, IRWANSYAH ., MUHAMMAD AGUSSALIM

Abstract

Abstrak

Fenomena gempa merupakan gejala alam yang sangat berpengaruh terhadap bangunan, terutama pada bangunan tinggi. Perencanaan struktur bangunan gedung tahan gempa sangat penting di Indonesia, mengingat sebagian besar wilayahnya terletak dalam wilayah gempa dengan intensitas sedang hingga tinggi. Kajian penelitian adalah Rumah sakit rujukan regional kota Langsa dengan struktur bangunan 4 lantai dan tinggi 19,25 meter. Tujuan penelitian ini adalah menentukan kriteria level kinerja struktur dan mengetahui pola keruntuhan bangunan sehingga dapat diketahui joint-joint yang mengalami kerusakan dan kehancuran. Metode analisis pushover merupakan salah satu metode yang digunakan untuk menganalisis beban gempa guna mengetahui perilaku keruntuhan struktur dari hasil nilai performance point menggunakan ATC-40 dan nilai target displacement FEMA-356 dan FEMA 440. Hasil penelitian memperlihatkan bahwa berdasarkan ATC-40 untuk arah-x diperoleh nilai drift aktual sebesar 0,0082 mm berada di level kinerja Immediate occupancy dan untuk arah-y sebesar 0,0072 berada di level kinerja Imediated Occupancy. Sedangkan menurut FEMA 356 dan FEMA 440 drift aktual untuk arah-x sebesar 0,015 yang berada di level kinerja Damage Control, sementara arah-y sebesar 0,037 berada pada level kinerja Life safety.

Kata kunci: kerentanan struktur, rumah sakit, gempa, pushover analysis, level kinerja

Abstract

Earthquake phenomena are natural phenomena that greatly affect buildings, especially tall buildings. The planning of earthquake-resistant building structures is very important in Indonesia, considering that most of the area is located in an earthquake area with moderate to high intensity. The research study was the Langsa city regional hospital with a 4-storey building structure and a height of 19.25 meters. The purpose of this study was to determine the criteria for the level of structural performance and to determine the pattern of building collapse so that the joints that were damaged and destroyed could be identified. The pushover analysis method is one of the methods used to analyze earthquake loads to determine the collapse behavior of structures from the results of performance point values using ATC-40 and displacement target values of FEMA-356 and FEMA 440. The results show that based on ATC-40 for the x-direction the actual drift value of 0.0082 mm is obtained at the Immediate Occupancy and for the y-direction of 0.0072 at the Immediate Occupancy performance level. Meanwhile, according to FEMA 356 and FEMA 440 the actual drift for the x-direction is 0.015 which is at the Damage Control, while the y-direction is 0.037 at the Life safety performance level.

Keywords: structure vulnerability, hospital, earthquake, pushover analysis, performance level

Keywords

structure vulnerability, hospital, earthquake, pushover analysis, performance leve

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DOI: http://dx.doi.org/10.29103/tj.v13i2.964