Perilaku Siklik Dinding Geser Langsing Dengan Pelapisan Perkuatan Ultra High Performance Fiber Reinforcement Conrete

Arifa, Geralda Nurry (2026) Perilaku Siklik Dinding Geser Langsing Dengan Pelapisan Perkuatan Ultra High Performance Fiber Reinforcement Conrete. Masters thesis, InstitutTeknologi Sepuluh Nopember.

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Abstract

Dinding geser merupakan elemen struktural utama dalam menahan beban lateral akibat gempa, namun pada dinding geser langsing yang dirancang berdasarkan peraturan lama, kegagalan geser dan ketidakstabilan pasca-retak masih berpotensi terjadi. Salah satu metode perkuatan yang berkembang adalah pelapisan menggunakan Ultra High Performance Fiber Reinforcement Concrete (UHPFRC), yang memiliki kekuatan tinggi, kemampuan kontrol retak yang baik, serta ketahanan pasca-retak yang unggul. Penelitian ini bertujuan untuk menganalisis perilaku siklik dinding geser langsing yang diperkuat dengan UHPFRC serta membandingkannya dengan dinding geser squat yang juga diperkuat UHPFRC. Analisis dilakukan menggunakan metode elemen hingga tiga dimensi berbasis perangkat lunak ABAQUS dengan model Concrete Damaged Plasticity (CDP). Model numerik divalidasi terhadap data eksperimental dinding geser beton bertulang dari Oesterle et al. (1976). Variasi perkuatan UHPFRC meliputi satu dan dua lapis dengan ketebalan 40 mm dan 50 mm. Parameter evaluasi meliputi kurva gaya–perpindahan, kurva histeresis, daktilitas, disipasi energi, serta distribusi kerusakan berdasarkan parameter Damaget. Hasil analisis menunjukkan bahwa pelapisan UHPFRC secara signifikan meningkatkan kapasitas lateral, daktilitas, dan disipasi energi dinding geser langsing. Peningkatan kapasitas beban puncak mencapai sekitar 72% pada konfigurasi dua lapis UHPFRC setebal 50 mm dibandingkan dinding geser beton normal. Pola kerusakan Damaget menunjukkan bahwa peningkatan jumlah lapisan dan ketebalan UHPFRC mampu menunda perkembangan kerusakan, mendistribusikan tegangan secara lebih merata, serta meningkatkan stabilitas pasca-puncak. Perbandingan dengan dinding geser squat menunjukkan bahwa perkuatan UHPFRC lebih efektif pada dinding geser langsing, yang ditandai dengan perilaku yang lebih daktail dan degradasi kekuatan yang lebih terkendali.
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Shear walls are primary structural elements designed to resist lateral loads induced by earthquakes; however, slender shear walls designed based on older codes remain susceptible to shear failure and post-cracking instability. One strengthening technique that has gained increasing attention is the application of Ultra High Performance Fiber Reinforced Concrete (UHPFRC) overlays, which offer high strength, excellent crack control capability, and superior post-cracking performance. This study aims to analyze the cyclic behavior of UHPFRC-strengthened slender shear walls and to compare their performance with UHPFRC-strengthened squat shear walls. The analysis was conducted using a three-dimensional finite element method implemented in ABAQUS software with the Concrete Damaged Plasticity (CDP) model. The numerical model was validated against experimental data of reinforced concrete shear walls reported by Oesterle et al. (1976). Several UHPFRC strengthening configurations were considered, including single- and double-layer overlays with thicknesses of 40 mm and 50 mm. The structural response was evaluated in terms of force–displacement relationships, hysteresis behavior, ductility, energy dissipation, and damage distribution based on the DAMAGET parameter. The results indicate that UHPFRC overlays significantly enhance the lateral capacity, ductility, and energy dissipation of slender shear walls. The peak lateral load increased by approximately 72% for the double-layer UHPFRC overlay with a thickness of 50 mm compared to the unstrengthened shear wall. The DAMAGET damage patterns demonstrate that increasing both the number of layers and the overlay thickness delays damage progression, promotes a more uniform stress distribution, and improves post-peak stability. A comparison with squat shear walls shows that UHPFRC strengthening is more effective for slender shear walls, which exhibit more ductile behavior and more controlled strength degradation.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	ABAQUS, Cohesion Zone Model, Concrete Damage Plasticity, Shear wall Slender, Ultra High Performance Fiber Reinforcement Concrete
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22101-(S2) Master Thesis
Depositing User:	Geralda Nurry Arifa
Date Deposited:	02 Feb 2026 08:17
Last Modified:	02 Feb 2026 08:17
URI:	http://repository.its.ac.id/id/eprint/131307

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