PERENCANAAN ULANG STRUKTUR ATAS JEMBATAN MENGGUNAKAN TWIN CELLULAR BOX GIRDER BETON PRATEGANG PANJANG 60 METER (Studi Kasus: Jembatan Taman Sepanjang Baru, Kabupaten Sidoarjo)

Estanislau Gusmau Rodrigues da Costa, Francisco (2026) PERENCANAAN ULANG STRUKTUR ATAS JEMBATAN MENGGUNAKAN TWIN CELLULAR BOX GIRDER BETON PRATEGANG PANJANG 60 METER (Studi Kasus: Jembatan Taman Sepanjang Baru, Kabupaten Sidoarjo). [Tugas Akhir/Skripsi]

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Abstract

Perencanaan ulang Jembatan Taman Sepanjang Baru dilakukan menggunakan struktur atas Twin Cellular Box Girder Beton Prategang dengan bentang 60 meter sebagai alternatif struktur yang mampu memenuhi persyaratan kekuatan dan kemampuan layan. Perencanaan mengacu pada SNI 1725:2016 tentang Pembebanan untuk Jembatan, SNI 2833:2016 tentang Perencanaan Jembatan terhadap Beban Gempa, dan SNI 7833:2012 tentang Perencanaan Struktur Beton Prategang. Analisis pembebanan dan perhitungan gaya dalam dilakukan berdasarkan ketentuan SNI dengan bantuan program SAP2000 untuk memperoleh respons struktur secara akurat pada setiap kombinasi beban rencana. Tujuan perencanaan ini adalah menentukan dimensi penampang dan sistem prategang yang memenuhi persyaratan perencanaan serta mengevaluasi kinerja struktur berdasarkan tegangan, lendutan, torsi, dan kapasitas geser. Hasil perencanaan menunjukkan bahwa Twin Cellular Box Girder memiliki tinggi penampang 3,30 m, lebar pelat atas 9,00 m, lebar pelat bawah 5,00 m, tebal pelat atas dan web 0,50 m, serta tebal pelat bawah 0,40 m. Sistem prategang yang digunakan adalah sistem pascatarik (post-tensioned) dengan 30 tendon yang masing-masing terdiri atas 22 strand sehingga total strand sebanyak 660 buah, menggunakan uncoated 7-wire super strand ASTM A416 Grade 270 dan angkur VSL tipe E5-22. Hasil analisis menunjukkan kehilangan gaya prategang total sebesar 21,71%, lebih kecil dari batas yang diizinkan sebesar 25%. Tegangan akhir pada pelat, serat atas, dan serat bawah masing-masing sebesar -13,86 MPa, -15,04 MPa, dan 13,35 MPa. Kapasitas momen ultimit penampang sebesar 274.159,13 kNm lebih besar daripada momen ultimit akibat pembebanan sebesar 170.452,40 kNm. Lendutan total sebesar 5,30 cm masih lebih kecil dari lendutan izin sebesar 6,00 cm, sedangkan torsi memenuhi persyaratan dengan nilai Tcr sebesar 103.957,92 kNm lebih besar daripada Tu sebesar 2.510,07 kNm. Pada kontrol geser diperlukan penambahan tulangan geser karena nilai Vu melebihi kapasitas geser beton (ØVc). Berdasarkan hasil tersebut, struktur yang direncanakan dinyatakan aman serta memenuhi persyaratan kekuatan dan kemampuan layan sesuai standar yang berlaku. Kata Kunci: Twin Cellular Box Girder, Beton Prategang, Sistem Pascatarik. ABSTRACT : The redesign of the Taman Sepanjang Baru Bridge was carried out by adopting a 60-meter-span Prestressed Concrete Twin Cellular Box Girder as an alternative superstructure capable of satisfying both strength and serviceability requirements. The design was conducted in accordance with SNI 1725:2016 concerning Bridge Loading, SNI 2833:2016 concerning Seismic Design for Bridges, and SNI 7833:2012 concerning the Design of Prestressed Concrete Structures. Load analysis and internal force calculations were performed based on the provisions of these standards with the assistance of SAP2000 software to obtain accurate structural responses under the prescribed load combinations. The objective of this study was to determine the cross-sectional dimensions and prestressing system that satisfy the design requirements, as well as to evaluate the structural performance in terms of stresses, deflection, torsion, and shear capacity. The results indicate that the proposed Twin Cellular Box Girder has a section depth of 3.30 m, a top slab width of 9.00 m, a bottom slab width of 5.00 m, a top slab and web thickness of 0.50 m, and a bottom slab thickness of 0.40 m. The prestressing system employs a post-tensioning system consisting of 30 tendons, each containing 22 strands, resulting in a total of 660 strands, using uncoated 7-wire super strands conforming to ASTM A416 Grade 270 and VSL E5-22 anchorages. The analysis shows that the total prestress loss is 21.71%, which is lower than the allowable limit of 25%. The final stresses in the slab, top fiber, and bottom fiber are -13.86 MPa, -15.04 MPa, and 13.35 MPa, respectively. The ultimate flexural capacity of the section is 274,159.13 kNm, exceeding the required ultimate bending moment of 170,452.40 kNm. The total deflection is 5.30 cm, which is less than the allowable deflection of 6.00 cm, while the torsional capacity satisfies the design requirement with Tcr of 103,957.92 kNm exceeding Tu of 2,510.07 kNm. Shear reinforcement was required because the applied shear force (Vu) exceeded the concrete shear capacity (ØVc). Based on these results, the proposed structure is considered safe and satisfies the strength and serviceability requirements specified by the applicable design standards. Keywords: Twin Cellular Box Girder, Prestressed Concrete, Post-Tensioning System.

Item Type:	Tugas Akhir/Skripsi
Uncontrolled Keywords:	Twin Cellular Box Girder, Prestressed Concrete, Post-Tensioning System.
Subjects:	T Technology > TH Building construction
Divisions:	Faculty of Engineering > Civil Engineering Study Program
Depositing User:	2211 Francisco Estanislau Gusmau Rodrigues da Costa UWKS
Date Deposited:	20 Aug 2026 07:01
Last Modified:	20 Aug 2026 07:01
URI:	http://erepository.uwks.ac.id/id/eprint/23382

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