Analisis Berbasis Kinerja Struktur Elevated Dengan Sistem Portal Pada Jalan Tol Jogja - Bawen Menggunakan Analisis Statik Nonlinear (Pushover Analysis)

Edgar Rabani, Muhammad Rafi (2024) Analisis Berbasis Kinerja Struktur Elevated Dengan Sistem Portal Pada Jalan Tol Jogja - Bawen Menggunakan Analisis Statik Nonlinear (Pushover Analysis). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Gempa bumi dapat menyebabkan kerusakan struktural signifikan pada bangunan. Studi ini mengevaluasi dampak gempa pada jembatan layang tipe struktur portal dengan analisis statik nonlinier (pushover). Literatur yang ada lebih fokus pada gedung, sedangkan struktur jembatan dan jalan layang tipe portal masih kurang dibahas. Studi ini bertujuan untuk mengevaluasi gempa pada Proyek Jalan Layang Tol Jogja-Bawen Elevated 4 Paket 1 seksi 1.
Metode analisis statik nonlinear pada struktur elevated menilai tingkat kinerja berdasarkan respon struktur setelah analisis dilakukan. Ini menentukan apakah bangunan dapat memenuhi fungsi dan standar kinerja sesuai spektrum kapasitas (ATC-40) dan metode perpindahan (FEMA 356). Analisis respons spektrum mengikuti SNI 1725:2016 dan SNI 2833:2016 untuk perencanaan dan pembebanan gempa. Proyek ini terdiri dari empat tahap: pengecekan kondisi struktur eksisting, analisis pushover untuk mengetahui tingkat kinerja, membandingkan base shear dari analisis respon spektrum dengan pushover, dan analisis pushover pada setiap portal jembatan untuk memperkuat hasil analisis seluruh bentang jembatan.
Hasil analisis nonlinear menunjukkan bahwa maksimum drift ratio pada arah x adalah 0.00431 dan pada arah y adalah 0.00738. Berdasarkan ATC-40, level kinerja bangunan adalah Immediate Occupancy (IO). Analisis base reaction respons spectrum vs pushover menunjukkan nilai base reaction dengan beban gempa arah x sebesar 165,362.388 kN dan arah y sebesar 164,909.217 kN, yang menyebabkan sendi plastis pada borepile, kolom, dan pierhead, namun tetap dalam batas Immediate Occupancy (IO). Menurut metode FEMA 356, drift actual pada arah x sebesar 0.51420% dan arah y sebesar 0.90407%, menegaskan struktur berada pada level IO. Pushover pada arah x menunjukkan sendi plastis IO pertama terbentuk pada P101 dengan base reaction 170,375.30 kN dan displacement 37.10 mm, struktur bergeser 2.8%. Pada arah y, sendi plastis IO pertama terbentuk pada P101 dengan base reaction 184,392.75 kN dan displacement 55.69 mm, struktur bergeser 4.2%. Menurut FEMA 356, Immediate Occupancy adalah level kinerja paling aman untuk desain jembatan sangat penting, sehingga struktur dapat tetap digunakan setelah gempa tanpa menunggu perbaikan.
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Earthquakes can cause significant structural damage to buildings. This study evaluates the impact of earthquakes on portal structure type flyovers with nonlinear static analysis (pushover). The existing literature focuses more on buildings, while the structure of bridges and portal-type overpasses is still poorly discussed. This study aims to evaluate the earthquake on the Jogja-Bawen Elevated Toll Road Project 4 Package 1 section 1.
The nonlinear static analysis method on elevated structures assesses the level of performance based on the structural response after the analysis is carried out. It determines whether a building can meet the function and performance standards as per the capacity spectrum (ATC-40) and displacement method (FEMA 356). The spectral response analysis follows SNI 1725:2016 and SNI 2833:2016 for earthquake planning and loading. The project consists of four stages: checking the condition of the existing structure, pushover analysis to determine the level of performance, comparing the base shear of the spectral response analysis with the pushover, and pushover analysis on each bridge portal to strengthen the results of the analysis of the entire bridge span.
The results of the nonlinear analysis show that the maximum drift ratio in the x direction is 0.00431 and in the y direction is 0.00738. Based on ATC-40, the building's performance level is Immediate Occupancy (IO).The base reaction analysis of the spectrum vs pushover response showed a base reaction value with an earthquake load in the x-direction of 165,362,388 kN and a y-direction of 164,909,217 kN, which caused plastic joints in the borepile, column, and pierhead, but remained within the limits of Immediate Occupancy (IO). According to the FEMA 356 method, the actual drift in the x direction is 0.51420% and the y direction is 0.90407%, confirming the structure is at the IO level. The pushover in the x-direction shows that the first IO plastic joint was formed on P101 with a base reaction of 170,375.30 kN and a displacement of 37.10 mm, the structure shifted by 2.8%. In the y direction, the first IO plastic joint was formed at P101 with a base reaction of 184,392.75 kN and a displacement of 55.69 mm, the structure shifted by 4.2%. According to FEMA 356, Immediate Occupancy is the safest level of performance for bridge design is critical, so that the structure can remain in use after an earthquake without waiting for repairs.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Bangunan beton tahan gempa, jembatan layang, jembatan tipe portal, analisis berbasis kinerja (pushover). Earthquake-resistant concrete buildings, overpasses, portal-type bridges, performance-based analysis (pushover).
Subjects:	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) > TA681 Concrete construction
Divisions:	Faculty of Vocational > Civil Infrastructure Engineering (D4)
Depositing User:	Muhammad Rafi Edgar Rabani
Date Deposited:	06 Aug 2024 07:09
Last Modified:	06 Aug 2024 07:09
URI:	http://repository.its.ac.id/id/eprint/113112

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