Studi Komparasi Struktur Atas Jalan Tol Layang Menggunakan Simply Supported dan Continuous Span PCU-Girder

Semita, Made Yujiro (2025) Studi Komparasi Struktur Atas Jalan Tol Layang Menggunakan Simply Supported dan Continuous Span PCU-Girder. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pemerintahan Indonesia sangat gencar dalam pembangunan infrastruktur jalan tol untuk memperlancar distribusi barang dan jasa, serta memberi dampak peningkatan ekonomi di daerah yang terjaring. Pembangunan yang masif menimbulkan jejak karbon tinggi dari produksi material serta proses konstruksi yang terjadi. Infrastruktur jalan tol sangat penting untuk perputaran ekonomi Indonesia, maka dari itu diperlukan struktur berkelanjutan yang dapat melayani sesuai umur rencananya, namun tetap efisien dari segi material dan konstruksinya. Jalan tol layang merupakan alternatif tipe struktur jalan yang tidak mengambil banyak lahan dan mengurangi pekerjaan galian timbunan di lapangan. Tetapi, kebutuhan material beton dan baja yang lebih banyak meningkatkan biaya dan emisi. Pada tugas akhir ini, diselidiki penggunaan penampang Prestressed Concrete U (PCU) Girder dengan konfigurasi struktur simply supported dan continuous span yang menggunakan overlapping tendons untuk perencanaan struktur atas jalan tol layang dengan tipikal bentang 40,8 meter dengan lebar 16,5 m. Penampang PCU-Girder yang digunakan dalam perencanaan menggunakan produk pracetak PT. Adhi Persada Beton. Pemodelan dan analisis struktur dilaksanakan pada program bantu Midas Civil untuk mendapatkan reaksi gaya dalam dan staging analysis. Perencanaan girder, kontrol desain, dan perencanaan penulangan sesuai dengan Peraturan Bina Marga No. 11 Tahun 2011 dan AASHTO LRFD 2020.Komparasi menggunakan struktur atas jalan tol layang dengan 5 bentang tipikal. Kedua konfigurasi girder direncanakan menggunakan 3 pasang tendon pada sisi atas, tengah, dan bawah girder. Pada struktur simply supported dan continuous girder tengah menggunakan tendon layout berbentuk satu parabola terbalik, sementara pada continuous girder ditambahkan penggunaan overlapping tendons. Jumlah strand total untuk 5 bentang simply supported sebanyak 400 strands, sedangkan pada struktur continuous span lebih sedikit, yaitu sebanyak 374 strands, sehingga gaya prategang awal yang digunakan lebih kecil. Initial prestress diambil sebesar 1376,4 MPa untuk kedua konfigurasi. Dari staging analysis, didapatkan bahwa serat atas dan bawah di seluruh bentang kedua konfigurasi berupa tekan (zero-tension) dan perbedaan nilai tegangannya tidak signifikan. Tetapi, lendutan yang terjadi pada continuous span lebih kecil, dikarenakan momen positif yang lebih kecil pada tengah bentang.
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Indonesia’s government is very steadfast in highway infrastructure construction to elevate the distribution of goods and services, while also giving economic impact for affected areas. However, massive construction results in high carbon footprint from material production and onsite construction process. Highway infrastructure is essential for the rotation of the Indonesian economy, therefore we need sustainable structures that can withstand their expected design life, while still efficient in terms of materials and construction methods. Elevated highway structures are an alternative structure type for roads that doesn’t take up much space and minimize cut-and-fill earthworks. Despite this, it’s larger concrete and steel material needs could increase costs and emissions. In this final project, the use of Prestressed Concrete U (PCU) Girder sections are investigated with simply supported and continuous span utilizing overlapping tendons for an elevated highway superstructure with typical spans of 40,8 meters each and 16,5 meters width. The PCU-Girder sections for planning and design uses PT. Adhi Persada Beton precast products. Structural modeling and analysis are done with the Midas Civil software to obtain internal forces and staging analysis results. The design codes used for girder planning, design control, and reinforcement design are Peraturan Bina Marga No. 11 Tahun 2011 and AASHTO LRFD 2020. The comparison uses an elevated highway superstructure with 5 typical spans. Both girder configurations are designed with 3 pairs of tendons on the top, middle, and bottom part of the girder. For the simply supported and the middle continuous girders, the tendon layout used are one inverted parabola, while overlapping tendons are added for the continuous. The total strand number for 5 spans of the simply supported structure is 400 strands, while the continuous span has less material, only using 374 strands, reducing the initial prestress force required. The initial prestressing for both configurations is set at 1376,4 MPa. From the staging analysis, it’s concluded that the top and bottom fiber of the whole span of both configurations are in compression (zero-tension) and the differences in the stress values are insignificant. However, the midspan deflection of the continuous girders are smaller, mainly because the reduced positive moment at midspan.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Beton Prategang, Bentang Sederhana, Bentang Menerus, Construction Staging, Jalan Tol Layang, Midas Civil, Overlapping Tendons, PCU-Girder, Continuous Span, Elevated Highway, Prestressed Concrete, Simply Supported
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA492.G5 Girders T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering) T Technology > TA Engineering (General). Civil engineering (General) > TA683 Precast concrete construction. Prestressed concrete construction.
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22201-(S1) Undergraduate Thesis
Depositing User:	Made Yujiro Semita
Date Deposited:	25 Jul 2025 03:03
Last Modified:	25 Jul 2025 03:03
URI:	http://repository.its.ac.id/id/eprint/121245

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