MEILYANA, TRI RISMA (2025) ANALISIS STRUKTUR RUMAH SAKIT TERHADAP BEBAN GEMPA MENGGUNAKAN METODE PUSHOVER (Studi Kasus : Proyek Pembangunan Gedung Rumah Sakit Pusat Pelayanan Ibu Dan Anak Pantai Indah Kapuk). S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
The structural design of multi-story buildings, especially hospitals, requires a structural system that is not only strong and stiff but also capable of ductile behavior under seismic loads. Conventional analysis methods that consider only elastic behavior are often insufficient to represent the actual structural response during major earthquakes. Therefore, a performance-based evaluation method such as pushover analysis is necessary, as it can depict the nonlinear behavior of structures progressively until they reach ultimate conditions. This study aims to evaluate the structural performance of a hospital building under earthquake loads using nonlinear static analysis (pushover method). The case study is conducted on a seven-story hospital building modeled using ETABS v.21, following the provisions of SNI 1726:2019 and ATC-40. The study examines base shear, inter-story drift, plastic hinge distribution, and structural ductility. The analysis results show that the maximum inter-story drift occurs on the 4th floor, reaching 37.51 mm in the X-direction and 29.19 mm in the Y-direction, both within the allowable limits set by SNI. The structural performance level is classified as Immediate Occupancy (IO) according to ATC-40. The ductility values are 1.499 in the X-direction and 5.886 in the Y-direction, indicating that the Y-direction has better plastic deformation capacity to dissipate earthquake energy. Keywords: Pushover Analysis, Hospital Structure, Earthquake Load, Ductility, Immediate Occupancy Perencanaan struktur bangunan gedung bertingkat, khususnya rumah sakit, membutuhkan sistem struktur yang tidak hanya kuat dan kaku, tetapi juga mampu berperilaku daktail dalam menghadapi beban gempa. Metode analisis konvensional yang hanya mempertimbangkan perilaku elastis sering kali belum cukup untuk menggambarkan respons aktual struktur terhadap gempa besar. Oleh karena itu, diperlukan metode evaluasi berbasis kinerja seperti analisis pushover, yang dapat menggambarkan perilaku nonlinier struktur secara bertahap hingga mencapai kondisi ultim. Penelitian ini bertujuan untuk mengevaluasi kinerja struktur gedung rumah sakit terhadap beban gempa menggunakan metode analisis statik nonlinier (pushover). Studi kasus dilakukan pada bangunan rumah sakit bertingkat tujuh yang dianalisis dengan software ETABS v.21 berdasarkan ketentuan SNI 1726:2019 dan ATC-40. Penelitian ini meninjau gaya geser dasar, simpangan antar lantai, distribusi sendi plastis, serta nilai daktilitas struktur. Hasil analisis menunjukkan bahwa simpangan antar lantai maksimum terjadi pada lantai 4 sebesar 37,51 mm pada arah X dan 29,19 mm pada arah Y, masih berada di bawah batas izin yang ditentukan SNI. Tingkat kinerja struktur berada pada level Immediate Occupancy (IO) berdasarkan ATC-40. Nilai daktilitas sebesar 1,499 pada arah X dan 5,886 pada arah Y menunjukkan bahwa arah Y memiliki kemampuan deformasi plastis yang lebih baik dalam meredam energi gempa. Kata kunci: Analisis Pushover, Struktur Rumah Sakit, Beban Gempa, Daktilitas, Immediate Occupancy
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