Analisis Fragilitas Seismik Struktur Jembatan Slab On Pile

Apriliana, Estu Ema (2024) Analisis Fragilitas Seismik Struktur Jembatan Slab On Pile. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kurva fragilitas seismik adalah alat yang efektif untuk mengidentifikasi potensi risiko gempa dan konsekuensinya selama dan setelah terjadinya gempa. Kurva ini mengukur probabilitas kerentanan struktur terhadap parameter gerakan tanah yang diberikan. Dalam studi ini, kurva fragilitas analitik dikembangkan untuk jembatan slab on pile yang berlokasi di Jakarta. untuk mengetahui efek dari panjang pengisian beton bertulang pada komponen spun pile, analisis fragilitas seismik dari struktur jembatan slab on pile yang berlokasi di Jakarta diinvestigasi menggunakan dua tipe panjang pengisian spun pile, pengisian tipe A sepanjang dua meter dari ujung atas pile, sedangkan pengisian tipe B hingga kedalaman tiga meter di bawah tanah. Enam variasi geometri yang mereprentasikan jembatan slab on pile yang umum ditemui Jakarta digunakan sebagai faktor ketidakpastian geometri. Analisis pushover digunakan untuk mendapatkan nilai batasan seismic demands dari setiap level kerusakan. Analisis riwayat waktu nonlinear pada model 3D dengan soil pile interaction (SPI) dilakukan menggunakan program STKO. Kurva fragilitas yang dihasilkan menunjukan bahwa akibat beban gempa rencana, model dengan pengisian tipe A dan B, masing-masing memiliki probabilitas terjadinya kerusakan berat (extensive) sebesar 60% dan 64% pada sistem struktur dan 28% dan 58% pada komponen spun pile. Dapat disimpulkan bahwa jembatan slab on pile dengan pengisian tipe A memiliki kerentanan terhadap gempa lebih kecil dibandingkan dengan slab on pile dengan pengisian tipe B
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Seismic fragility curve is an effective tool for identifying the potential seismic risk and consequences during and after an earthquake. This curve measures the probability of structural vulnerability to given ground motion parameters. In this study, analytical fragility curves were developed for slab-on-pile bridges located in Jakarta. To understand the effect of the length of reinforced concrete filling on the components of the spun pile, seismic fragility analysis of slab-on-pile bridge structures located in Jakarta is investigated using two types of spun pile filling lengths. Type A filling extends two meters from the top of the pile, while type B filling extends three meters below the ground. Six variations of geometries representing commonly encountered slab-on-pile bridges in Jakarta were used to considered uncertainty. Pushover analysis was employed to obtain seismic demand values for each damage state. Nonlinear time history analysis on a 3D model with soil-pile interaction (SPI) was performed using the STKO program. The resulting fragility curve indicates that due to the seismic load, the model with Type A and Type B filling has probabilities of extensive damage of 60% and 64% in the structural system, and 28% and 58% in the spun pile component, respectively. In conclusion, The resulting fragility curves indicate that slab-on-pile bridges with type A filling are less vulnerable to earthquakes than those with type B filling.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Struktur jembatan slab on pile, spun pile, fragilitas, soil-pile interaction, Slab on pile bridge structure, fragility curve
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering)
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22101-(S2) Master Thesis
Depositing User:	Estu Ema Apriliana
Date Deposited:	07 Feb 2024 06:41
Last Modified:	07 Feb 2024 06:41
URI:	http://repository.its.ac.id/id/eprint/106401

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