Perancangan Struktur Gedung Perkantoran Delapan Lantai Di Surabaya Dengan Analisis Repair Cost Ratio Berdasarkan Pada Fema P-58

Izuan, Reza Harizul (2026) Perancangan Struktur Gedung Perkantoran Delapan Lantai Di Surabaya Dengan Analisis Repair Cost Ratio Berdasarkan Pada Fema P-58. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Perencanaan struktur tahan gempa tidak hanya ditinjau dari aspek keselamatan, tetapi juga perlu mempertimbangkan konsekuensi ekonomi akibat kerusakan pascagempa. Penelitian ini bertujuan untuk menganalisis pengaruh variasi faktor reduksi gempa (R) terhadap respons struktur serta mengevaluasi estimasi biaya perbaikan pascagempa menggunakan metode FEMA P-58 pada gedung beton bertulang dengan variasi Sistem Rangka Pemikul Momen Khusus (SRPMK), Sistem Rangka Pemikul Momen Menengah (SRPMM), dan Sistem Rangka Pemikul Momen Biasa (SRPMB). Analisis respons struktur dilakukan menggunakan Linear Time History Analysis untuk memperoleh Engineering Demand Parameters (EDP) berupa Story Drift Ratio (SDR) dan Peak Floor Acceleration (PFA). Nilai EDP kemudian dipetakan ke kurva fragility FEMA P-58 untuk menentukan probabilitas Damage State pada komponen struktural dan nonstruktural. Probabilitas kerusakan tersebut selanjutnya dikonversi menjadi estimasi biaya perbaikan dan dinyatakan dalam bentuk Repair Cost Ratio (RCR) sebagai perbandingan antara biaya perbaikan terhadap biaya penggantian bangunan. Hasil penelitian menunjukkan bahwa semakin besar nilai faktor reduksi gempa (R), respons struktur cenderung meningkat sehingga menghasilkan estimasi biaya perbaikan dan nilai Repair Cost Ratio yang lebih besar. Sebaliknya, penggunaan faktor reduksi gempa yang lebih kecil menghasilkan respons struktur dan estimasi biaya perbaikan yang lebih rendah. Seluruh model yang dianalisis memiliki nilai Repair Cost Ratio yang masih berada di bawah ambang batas yang umumnya digunakan sebagai pertimbangan pembangunan kembali, sehingga perbaikan masih menjadi alternatif yang lebih layak dibandingkan penggantian bangunan. Penelitian ini menunjukkan bahwa metode FEMA P-58 mampu memberikan evaluasi kinerja struktur dari aspek keselamatan sekaligus konsekuensi ekonomi pascagempa.
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Earthquake-resistant structural design should not only be evaluated from the perspective of structural safety but also from the economic consequences of post-earthquake damage. This study aims to investigate the influence of variations in the seismic response modification factor (R) on structural response and to evaluate the estimated post-earthquake repair cost using the FEMA P-58 methodology for a reinforced concrete building designed with Special Moment Frames (SMF), Intermediate Moment Frames (IMF), and Ordinary Moment Frames (OMF). Structural response was analyzed using Linear Time History Analysis to obtain the Engineering Demand Parameters (EDPs), namely Story Drift Ratio (SDR) and Peak Floor Acceleration (PFA). The resulting EDPs were mapped to the FEMA P-58 fragility curves to determine the probabilities of Damage States (DS) for structural and nonstructural components. These damage probabilities were subsequently converted into estimated repair costs and expressed as the Repair Cost Ratio (RCR), defined as the ratio of repair cost to replacement cost. The results indicate that higher seismic response modification factors (R) tend to produce larger structural responses, leading to higher estimated repair costs and Repair Cost Ratios. Conversely, lower values of the response modification factor result in lower structural responses and reduced post-earthquake repair costs. All structural systems analyzed in this study exhibit Repair Cost Ratios below the threshold commonly considered for replacement decisions, indicating that repair remains a more economically feasible alternative than building replacement. The findings demonstrate that the FEMA P-58 methodology provides an effective framework for evaluating structural performance from both structural safety and post-earthquake economic perspective.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Performance Based Earthquake Engineering, FEMA P-58; Repair Cost Ratio.
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA444 Reinforced concrete
Divisions:	Faculty of Civil Engineering and Planning > Civil Engineering > 22201-(S1) Undergraduate Thesis
Depositing User:	Izuan Reza Harizul
Date Deposited:	29 Jul 2026 07:10
Last Modified:	29 Jul 2026 07:10
URI:	http://repository.its.ac.id/id/eprint/139020

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