Evaluasi dan Rencana Perkuatan Gedung Perkantoran 6 Lantai di Surabaya Menggunakan Carbon Fiber Reinforced Polymer dan Concrete Jacketing

Ahmad, Athiyah Nafiisah Daaliyah (2026) Evaluasi dan Rencana Perkuatan Gedung Perkantoran 6 Lantai di Surabaya Menggunakan Carbon Fiber Reinforced Polymer dan Concrete Jacketing. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Peningkatan kejadian gempa merusak dalam beberapa tahun terakhir meningkatkan risiko bahaya akibat kerusakan struktural bangunan, terutama di kawasan perkotaan dengan tingkat kepadatan penduduk yang tinggi. Seiring dengan perkembangan ketentuan perencanaan bangunan tahan gempa, bangunan eksisting yang masih beroperasi dan dirancang berdasarkan peraturan terdahulu perlu dievaluasi kembali karena berpotensi belum memiliki kapasitas yang memadai terhadap tuntutan pembebanan gempa menurut standar terbaru. Objek penelitian ini adalah sebuah gedung perkantoran sektor perbankan di Surabaya yang dibangun pada tahun 1991 berdasarkan PPTGIUG 1983, sebelum diperkenalkannya Kategori Desain Seismik (KDS) dan klasifikasi Sistem Rangka Pemikul Momen. Meskipun gedung tersebut berada pada KDS D, detailing strukturnya tidak memenuhi persyaratan Sistem Rangka Pemikul Momen Khusus. Oleh karena itu, analisis dilakukan menggunakan parameter yang setara dengan Sistem Rangka Pemikul Momen Menengah. Studi ini bertujuan untuk membandingkan respons struktur berdasarkan PPTGIUG 1983 dan SNI 1726:2019, mengidentifikasi elemen struktur yang memerlukan perkuatan akibat pembebanan gempa periode ulang 975 tahun sesuai SNI 9273:2025, serta mengevaluasi kemampuan Carbon Fiber Reinforced Polymer (CFRP) dalam memenuhi kebutuhan perkuatan elemen struktur berdasarkan ACI 440.2R-08. Analisis dilakukan menggunakan metode linier dinamik respons spektrum dengan pendekatan Force-Based Design. Berdasarkan hasil evaluasi, diperoleh bahwa penggunaan SNI 1726:2019 menghasilkan perubahan periode getar alami sebesar 0,58%, peningkatan gaya geser dasar sebesar 128,18%, serta peningkatan simpangan antar tingkat maksimum sebesar 708,9% dibandingkan PPTGIUG 1983. Perencanaan perkuatan menggunakan CFRP pada elemen pelat dan balok menghasilkan peningkatan kapasitas lentur masing-masing sebesar 151,06% dan 90,95%, serta peningkatan kapasitas geser balok sebesar 40,94%. Peningkatan kapasitas lentur tidak selalu berbanding lurus dengan penambahan jumlah lapisan CFRP. Jumlah lapisan dibatasi hingga tiga lapis berdasarkan hasil penelitian eksperimental terdahulu yang menunjukkan kecenderungan terjadinya kegagalan dini pada penggunaan lapisan yang lebih banyak. Dengan keterbatasan tersebut, CFRP belum mampu memenuhi seluruh kebutuhan perkuatan sehingga pada elemen tertentu diusulkan metode perkuatan alternatif berupa pelat baja berangkur dan concrete jacketing.
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The increasing occurrence of destructive earthquakes has increased structural damage risk, particularly in densely populated urban areas. As seismic design provisions evolve, existing buildings designed under previous regulations require re-evaluation because they may not have adequate withstand earthquake loading according to current standards. The object of this study is a banking office building in Surabaya built in 1991 based on PPTGIUG 1983, before the introduction of Seismic Design Categories (SDC) and moment-resisting frame classifications. Although the building is categorized under SDC D, its detailing did not satisfy the requirements for a Special Moment Resisting Frame. Therefore, parameters equivalent to an Intermediate Moment Resisting Frame were adopted for analysis. This study aims to compare the structural response based on PPTGIUG 1983 and SNI 1726:2019, identify structural elements requiring retrofit under the 975-year return period earthquake loading specified in SNI 9273:2025, and evaluate the ability of Carbon Fiber Reinforced Polymer (CFRP) to meet the strengthening requirements of structural elements based on ACI 440.2R-08. Analysis was performed using the linear dynamic response spectrum method with the Force-Based Design approach. The results showed that adopting SNI 1726:2019 changed the natural vibration period by 0,58%, increased the base shear by 128,18%, and increased the maximum inter-story drift by 708,9% compared with PPTGIUG 1983. The proposed CFRP retrofit for slabs and beams increased the flexural capacity by 151,06% and 90,95%, respectively, and the beam shear capacity by 40,94%. However, the increase in flexural capacity was not always proportional to the number of CFRP layers. The number of CFRP layers was limited to three based on previous experimental studies reporting a tendency for premature failure when additional layers were applied. Consequently, CFRP was unable to satisfy all strengthening requirements. Anchored steel plates and concrete jacketing were proposed as alternative strengthening methods for specific structural elements.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Evaluasi Struktur, Perkuatan Struktur, Carbon Fiber Reinforced Polymer, Concrete Jacketing, Structural Evaluation, Structural Retrofitting, Carbon Fiber Reinforced Polymer, Concrete Jacketing
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA418.9 Composite materials. Laminated materials. T Technology > TA Engineering (General). Civil engineering (General) > TA444 Reinforced concrete T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering) T Technology > TA Engineering (General). Civil engineering (General) > TA658 Structural design
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22201-(S1) Undergraduate Thesis
Depositing User:	Athiyah Nafiisah Daaliyah Ahmad
Date Deposited:	28 Jul 2026 03:06
Last Modified:	28 Jul 2026 03:06
URI:	http://repository.its.ac.id/id/eprint/138307

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