Analisis Desain Pile Jetty A Eksisting Dan Perencanaan Alternatif Pada Proyek Pembangunan Dermaga Kapal Selam

Ressa, Muhammad (2026) Analisis Desain Pile Jetty A Eksisting Dan Perencanaan Alternatif Pada Proyek Pembangunan Dermaga Kapal Selam. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Proyek Pembangunan Dermaga Kapal Selam PT PAL Indonesia di Surabaya merupakan infrastruktur maritim strategis yang menuntut standar stabilitas tinggi. Desain Jetty A eksisting menggunakan Steel Pipe Pile (SPP) dan Steel Pipe Sheet Pile (SPSP) berdiameter 1200 mm menghadapi dua kendala teknis utama: kondisi tanah very loose sand hingga kedalaman 7,5 meter yang berpotensi mengurangi daya dukung, serta kerentanan material baja terhadap korosi laut yang memerlukan sistem proteksi HDPE dan Sacrificial Anode Cathodic Protection (SACP) dengan umur layan hanya 10 tahun. Penelitian ini bertujuan mengevaluasi kinerja desain eksisting pada Jetty A dan Jetty B sekaligus merancang alternatif menggunakan Concrete Spun Pile (CSP) untuk Jetty A. Metodologi mencakup koreksi N-SPT, perhitungan daya dukung aksial dengan Metode Luciano Decourt dan Meyerhof, serta pemodelan numerik SAP2000 dengan pendekatan interaksi tanah-struktur Nakazawa. Pembebanan dianalisis sesuai SNI 1726:2019, meliputi beban operasional, sandar kapal 103,03 ton, angin, gelombang, dan gempa. Evaluasi eksisting menunjukkan beban tekan aksial maksimum SPP masih di bawah Qall (526,65 ton < 571,7 ton), namun isu korosi jangka panjang menjadi pertimbangan kritis. Pada desain alternatif, CSP Ø1200 mm tebal 150 mm Class B (fc' 52 MPa) menghasilkan beban tekan maksimum 427,951 ton dan 530,07 ton pada Jetty A Barat dan Timur, keduanya di bawah kapasitas izin 751,9 ton. Seluruh pemeriksaan defleksi dan kapasitas lentur dinyatakan memenuhi syarat. Desain alternatif Spun Pile terbukti aman secara struktural, mengeliminasi kebutuhan proteksi korosi eksternal, dan direkomendasikan sebagai solusi rekayasa yang lebih efisien untuk keberlanjutan fungsi dermaga.
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The Submarine Wharf Construction Project of PT PAL Indonesia in Surabaya is a strategic maritime infrastructure requiring high stability standards. The existing Jetty A design utilizes Steel Pipe Pile (SPP) and Steel Pipe Sheet Pile (SPSP) with a diameter of 1200 mm, facing two major technical constraints: very loose sand soil conditions extending to a depth of 7.5 meters that potentially reduce bearing capacity, and the vulnerability of steel material to marine corrosion requiring an HDPE protection system and Sacrificial Anode Cathodic Protection (SACP) with a service life of only 10 years. This study aims to evaluate the performance of the existing design on Jetty A and Jetty B while proposing an alternative design using Concrete Spun Pile (CSP) in Jetty A. The methodology encompasses N-SPT correction, axial bearing capacity calculations using the Luciano Decourt and Meyerhof methods, and numerical modeling in SAP2000 applying the Nakazawa soil-structure interaction approach. Loadings were analyzed in accordance with SNI 1726:2019, including operational loads, berthing load of 103.03 tons, wind, wave, and seismic loads. Evaluation of the existing design shows that the maximum axial compressive load of the SPP remains below the allowable capacity (526.65 tons < 571.7 tons); however, long-term corrosion issues remain a critical concern. In the alternative design, CSP Ø1200 mm with 150 mm wall thickness, Class B (fc' 52 MPa) yields maximum compressive loads of 427.951 tons and 530.07 tons on Jetty A West and East respectively, both below the allowable capacity of 751.9 tons. All deflection and flexural capacity checks are satisfied. The alternative Spun Pile design is proven structurally safe, eliminates the need for external corrosion protection systems, and is recommended as a more efficient engineering solution for the long-term sustainability of the wharf.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Daya Dukung Lateral, Jetty, Korosi, Spun Pile, Steel Pipe Pile, Very Loose Sand Jetty, Corrosion, Lateral Bearing Capacity, Spun Pile, Steel Pipe Pile, Very Loose Sand
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA760+ Retaining walls T Technology > TA Engineering (General). Civil engineering (General) > TA780 Piles and pile-driving
Divisions:	Faculty of Civil Engineering and Planning > Civil Engineering > 22201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Ressa
Date Deposited:	29 Jul 2026 20:21
Last Modified:	29 Jul 2026 20:21
URI:	http://repository.its.ac.id/id/eprint/138799

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