Evaluasi Kinerja Struktur Tribun Barat Stadion RAA Adiwijaya Kabupaten Garut dengan Analisis Pushover Metode ATC-40

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ABSTRAK

Perancangan struktur bangunan gedung bertingkat di Indonesia memiliki tantangan yang harus dihadapi, yaitu risiko bencana alam berupa gempa bumi. Indonesia terletak di persimpangan empat lempeng tektonik: Lempeng Indo-Australia, Lempeng Pasifik, Lempeng Eurasia, dan Filipina yang dikenal juga sebagai Cincin Api Pasifik. Analisis seismik non linier biasanya digunakan untuk mengetahui kinerja struktur bangunan bertingkat dan tidak beraturan. Tujuan dari penelitian ini adalah untuk mengevaluasi kinerja struktur Struktur Tribun Barat Stadion RAA Adiwijaya Kabupaten Garut, baik dengan analisis sesimik linier respon spektra maupun analisis seismik non linier pushover, menggunakan software SAP2000 yang diselidiki berdasarkan gaya geser dasar, perpindahan, dan simpangan. Penelitian ini menghasilkan gaya geser maksimum pada arah X sebesar 61.045,515 kN dengan perpindahan sebesar 33,811 mm; sedangkan arah Y gaya geser maksimum sebesar 90.114,592 kN dengan perpindahan 1,799 mm. Berdasarkan metode ATC-40, Struktur Tribun Barat Stadion RAA Adiwijaya Kabupaten Garut memiliki level kinerja struktur Immediate Occupancy (IO). Hal ini terlihat dari nilai simpangannya sebesar 0,0005 untuk arah X dan 0,00001 untuk arah Y halmana level kinerja struktur Immediate Occupancy bernilai ≤0,01.

Kata kunci: bangunan gedung bertingkat, analisis pushover, level kinerja struktur, ATC-40

ABSTRACT

The structural design of multi-story buildings in Indonesia confronting challenges that is the risk of natural disasters such as earthquakes. Indonesia is located at the intersection of four tectonic plates: the Indo-Australian Plate, the Pacific Plate, the Eurasian Plate, and the Philippine Plate, which is also known as the Pacific Ring of Fire. Non-linear seismic analysis is usually used to determine the structural performance of multi-story and irregular building. The aim of this research is to evaluate the structural performance of the West Stand Structure of the RAA Adiwijaya Stadium, Garut Regency, both with linear seismic analysis of spectral response and non-linear pushover seismic analysis, using SAP2000 software which is investigated based on base shear forces, displacements and drifts. This research produces a maximum base shear force in the X direction of 61,045.515 kN with a displacement of 33.811 mm; while in the Y direction the maximum base shear force is 90,114.592 kN with a displacement of 1,799 mm. Based on ATC-40 method, the West Stand structure of the RAA Adiwijaya Stadium, Garut Regency has an Immediate Occupancy (IO) structural performance level. This can be seen from the drift value of 0.0005 for the X direction and 0.00001 for the Y direction, where the Immediate Occupancy structural performance level is ≤0.01.

Keywords: multi-story buildings, pushover analysis, compression strength, structural performance level, ATC-40