Analisis Hasil Vacuum Preloading pada Area Reklamasi dan Stabilitas Sheet Pile Area Dermaga di Terminal Kalibaru Tahap 1B Pelabuhan Tanjung Priok

Wardoyo, Valent Dita (2026) Analisis Hasil Vacuum Preloading pada Area Reklamasi dan Stabilitas Sheet Pile Area Dermaga di Terminal Kalibaru Tahap 1B Pelabuhan Tanjung Priok. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 5012221008-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only Download (6MB) | Request a copy

Abstract

Terminal Kalibaru Tahap 1B di Pelabuhan Tanjung Priok merupakan bagian dari pengembangan kapasitas pelabuhan untuk mendukung peningkatan aktivitas ekspor dan impor nasional. Pengembangan dilakukan pada lahan reklamasi yang didominasi tanah lunak dengan nilai N-SPT < 10 hingga kedalaman ±18 m, sehingga berpotensi mengalami penurunan yang besar dan memiliki daya dukung rendah. Untuk mengatasi kondisi tersebut, diterapkan metode vacuum preloading pada area reklamasi guna mempercepat proses konsolidasi tanah. Pada area dermaga yang berbatasan langsung dengan laut, digunakan sistem Steel Pipe Sheet Pile (SPSP) yang diperkuat dengan anchor pile D1200 untuk menahan tekanan tanah lateral, serta dilakukan pengerukan kolam pelabuhan hingga elevasi -20 m sesuai kebutuhan operasional kapal. Tugas Akhir ini dilakukan untuk mengevaluasi kinerja vacuum preloading berdasarkan data monitoring settlement plate serta menganalisis stabilitas dan kecukupan kedalaman SPSP dan kapasitas anchor pile D1200 pada area dermaga.
Dalam menyelesaikan permasalahan tersebut, analisis konsolidasi tanah berdasarkan parameter hasil penyelidikan tanah awal dan dibandingkan dengan data monitoring settlement plate untuk memperoleh besarnya penurunan aktual serta derajat konsolidasi yang tercapai. Selanjutnya dilakukan analisis tekanan tanah lateral, perhitungan momen, serta evaluasi faktor keamanan terhadap stabilitas SPSP dan kapasitas tarik anchor pile D1200 dengan mempertimbangkan kondisi dredging hingga -20 m. Analisis dilakukan menggunakan data sekunder berupa hasil soil investigation, data desain, dan data monitoring lapangan.
Hasil analisis menunjukkan bahwa prediksi penurunan akhir konsolidasi menggunakan metode Asaoka sebesar 3,946 meter dan HWYL sebesar 3,941 meter. Deviasi terhadap penurunana primer teoritis sebesar 3,27 meter terjadi akibatnya adanya kontribusi penurunan segera (immediate settlement) dan penurunan sekunder (secondary settlement) yang berjalan simultan selama masa vakum aktif. Sementara itu berdasarkan eveluasi stabilitas lateral dermaga, panjang penetrasi Steel Pipe Sheet Pile (SPSP) sedalam 45,9 meter dan kapasitas anchor pile D1200 dinyatakan memenuhi kriteria keamanan yang disaratkan dengan gaya tarik angkur aktual 3769,39 kN pada kondisi operasional dermaga.
===================================================================================================================================
The Kalibaru Terminal Phase 1B at the Port of Tanjung Priok is a vital infrastructure expansion aimed at increasing port capacity to support national export and import activities. The development was executed on a reclamation area predominated by highly soft soils characterized by an N-SPT value of less than 10 extending down to a depth of approximately 18 meters, which inherently posed risks of substantial settlement and low bearing capacity. To mitigate these geotechnical challenges, the vacuum preloading method was implemented across the reclamation zone to accelerate the soil consolidation process. Concurrently, at the wharf area directly adjacent to the sea, a Steel Pipe Sheet Pile (SPSP) system integrated with D1200 anchor piles was deployed to resist lateral earth pressures, while the port basin was dredged to an operational depth of -20 meters to accommodate target vessel drafts. This Final Project evaluates the performance of the vacuum preloading system based on settlement plate monitoring data and analyzes the stability, penetration depth adequacy of the existing SPSP, and the tensile capacity of the D1200 anchor piles.
To resolve these engineering objectives, soil consolidation analysis was initially
conducted utilizing theoretical parameters from soil investigations and subsequently validated against empirical field data from settlement plate monitoring to determine the magnitude of actual settlement and the achieved degree of consolidation. Furthermore, lateral earth pressure distributions, bending moment profiles, and safety factors were evaluated to determine the structural stability of the SPSP and the ultimate tensile capacity of the D1200 anchor piles under a critical dredging depth of -20 meters. The analysis relied on secondary data encompassing soil investigation reports, structural design configurations, and field monitoring data.
The analytical results indicate that the predicted ultimate consolidation settlements
derived from the Asaoka and HWYL methods are 3.946 meters and 3.941 meters, respectively. The deviation from the theoretical primary consolidation settlement of 3.27 meters is attributed to the combined effects of immediate elastic settlement and secondary compression (creep) occurring simultaneously during the active vacuum operation stage. Meanwhile, based on the lateral stability evaluation of the quay wall structure, the existing 45.9 meter penetration length of the SPSP and the structural capacity of the D1200 anchor piles successfully fulfill the required safety criteria under actual lateral earth pressures and anchor tensile forces during port operational conditions.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Vacuum Preloading, Settlement Plate, Asaoka, HWYL, Quay Wall, Vacuum Preloading, Settlement Plate, Asaoka, HWYL, Quay Wall
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TA Engineering (General). Civil engineering (General) > TA749 Soil stabilization T Technology > TA Engineering (General). Civil engineering (General) > TA760+ Retaining walls T Technology > TC Hydraulic engineering. Ocean engineering > TC801 Reclamation of land
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22201-(S1) Undergraduate Thesis
Depositing User:	Valent Dita Wardoyo
Date Deposited:	28 Jul 2026 01:31
Last Modified:	28 Jul 2026 01:31
URI:	http://repository.its.ac.id/id/eprint/138120

Actions (login required)

View Item