Alternatif Desain Struktur Atas Jalan Tol Solo-Yogyakarta Menggunakan Precast Concrete-U Girder (PC-U Girder)

Anggraini, Adinda Dwi Novita (2026) Alternatif Desain Struktur Atas Jalan Tol Solo-Yogyakarta Menggunakan Precast Concrete-U Girder (PC-U Girder). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pembangunan Jalan Tol Solo–Yogyakarta di kawasan Ring Road Yogyakarta memiliki keterbatasan ruang kerja dan waktu pelaksanaan erection akibat padatnya lalu lintas. Desain eksisting terdiri atas sembilan bentang PC-I Girder sepanjang 40,8 m dan 45,8 m, dengan 12 unit girder pada setiap bentang. Konfigurasi tersebut memerlukan banyak unit girder dan pilar di tengah keterbatasan ruang kerja dan kepadatan lalu lintas. Oleh karena itu, direncanakan konfigurasi alternatif menggunakan PC-U Girder bentang 50 m dan PC-I Girder bentang 22 m. PC-U Girder memiliki penampang yang lebih lebar serta kekakuan yang memadai untuk melayani bentang lebih panjang sehingga jumlah girder pada bentang utama dapat dikurangi dari 12 menjadi 8 unit dan jumlah pilar dapat dikurangi. Perencanaan ini bertujuan mengevaluasi kinerja struktur PC-U Girder serta membandingkan kebutuhan material desain eksisting dan desain alternatif. Tahapan perencanaan dimulai dengan menetapkan konfigurasi bentang alternatif PC-U Girder 50 m dan PC-I Girder 22 m. Struktur atas direncanakan melalui penentuan tendon dan kehilangan prategang, kemudian diperiksa terhadap tegangan, lentur, geser, dan lendutan. Reaksi struktur atas digunakan untuk merencanakan pierhead, kolom, pile cap, dan bored pile, meliputi pemeriksaan kapasitas struktur, daya dukung, defleksi lateral, dan penurunan. Selanjutnya, kebutuhan beton dan strand desain alternatif dibandingkan dengan desain eksisting. Hasil perencanaan menunjukkan bahwa konfigurasi pilar berkurang dari 10 menjadi 9 dan jumlah bentang berkurang dari 9 menjadi 8. PC-U Girder memenuhi persyaratan lentur dengan momen rencana 78.226,299 kN.m yang lebih besar daripada momen ultimit 45.731,165 kN.m. Persyaratan geser juga terpenuhi karena kuat geser rencana 6.989,269 kN melebihi gaya geser kritis 3.322,171 kN. Seluruh kontrol tegangan memenuhi, sedangkan lendutan akibat beban hidup 61,332 mm lebih kecil daripada batas 62,500 mm. Desain alternatif mengurangi jumlah girder sebesar 37,04%, tetapi volume beton meningkat sebesar 19,61% dan panjang total strand meningkat sebesar 28,08%. Dengan demikian, desain alternatif memenuhi persyaratan struktur dan mengurangi jumlah pilar serta elemen girder yang harus dipasang, tetapi tidak menghasilkan penghematan pada material yang ditinjau.
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The construction of the Solo–Yogyakarta Toll Road in the Yogyakarta Ring Road area is constrained by limited working space and girder erection time due to heavy traffic. The existing design consists of nine PC-I Girder spans measuring 40.8 m and 45.8 m, with 12 girders in each span. This configuration requires numerous girders and piers amid the limited working space and heavy traffic. Therefore, an alternative configuration using 50 m PC-U Girders and 22 m PC-I Girders was proposed. The PC-U Girder has a wider cross-section and sufficient stiffness to accommodate longer spans, allowing the number of girders in the main spans to be reduced from 12 to 8 units and the number of piers to be reduced. This design aims to evaluate the structural performance of the PC-U Girder and compare the material requirements of the existing and alternative designs. The design process began with establishing an alternative span configuration consisting of 50 m PC-U Girders and a 22 m PC-I Girder. The superstructure was designed by determining the prestressing tendons and prestress losses, followed by checks of stresses, flexural strength, shear strength, and deflection. The superstructure reactions were then used to design the pierheads, columns, pile caps, and bored piles, including evaluations of structural capacity, bearing capacity, lateral deflection, and settlement. Finally, the concrete and strand requirements of the alternative design were compared with those of the existing design. The results show that the pier configuration reducing the number of piers from 10 to 9 and the number of spans from 9 to 8. The PC-U Girder satisfies the flexural requirement, with a design moment capacity of 78,226.299 kN.m exceeding the ultimate moment of 45,731.165 kN.m. The shear requirement is also satisfied because the design shear capacity of 6,989.269 kN exceeds the critical shear force of 3,322.171 kN. All stress checks are satisfied, and the live-load deflection of 61.332 mm is below the 62.500 mm limit. The alternative design reduces the number of girders 37.04%; however, the concrete volume increases 19.61%, and the total strand length increases 28.08%. Therefore, the alternative design satisfies the structural requirements and reduces the number of piers and girder units to be erected, but it does not provide savings in the materials evaluated.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	PC-U Girder, beton prategang, kapasitas ultimit, kinerja layan, kebutuhan material;PC-U Girder, prestressed concrete, ultimate capacity, serviceability, material demand
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA444 Reinforced concrete T Technology > TA Engineering (General). Civil engineering (General) > TA492.G5 Girders T Technology > TA Engineering (General). Civil engineering (General) > TA681 Concrete construction T Technology > TA Engineering (General). Civil engineering (General) > TA683 Precast concrete construction. Prestressed concrete construction. T Technology > TE Highway engineering. Roads and pavements > TE7 TG300 Bridges--Design and construction.
Divisions:	Faculty of Vocational > 22301-Civil Infrastructure Engineering (D4)
Depositing User:	Adinda Dwi Novita Anggraini
Date Deposited:	31 Jul 2026 04:11
Last Modified:	31 Jul 2026 04:11
URI:	http://repository.its.ac.id/id/eprint/141336

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