DESIGN OF GENERAL CARGO WHARF STRUCTURE DECK ON PILE TYPE IN SOASIO PORT, TIDORE KEPULAUAN CITY, NORTH MALUKU PROVINCE

• Main Author: Tazkia Fadhilah, Alda
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/51744
• Institution: Institut Teknologi Bandung

Soasio Port is one of the regional feeder ports located in Goto, Tidore Kepulauan City, North Maluku Province. This port plays a role in the distribution of commodities, especially agricultural, plantation and forestry commodities, livestock, as well as wholesale and retail trade, which are the main commodities of Kepulauan Tidore City. To accommodate the distribution of commodities, a dock is needed to handle these commodities that are considered as general cargo. The purpose of writing this Final Repot is to design deck on pile cargo dock structure at Soasio Port, Tidore Kepulauan City, North Maluku Province. The dock structure is designed based on applicable design criteria and includes the design of a trestle that connects the wharf to the mainland. The design in this final project includes determining the layout of the wharf, dimensions of structural and structural elements of the wharf and trestle, structural modeling, structural reinforcement design, and soil bearing capacity analysis. In determining the dock layout and the preliminary design of the structure, secondary data is used, such as ship characteristic data and environmental data obtained from consultant documentation. In addition, there is also data on operational tools used at the designed cargo dock. Secondary data that has been analyzed will produce the parameters needed to determine the dock layout and design of the wharf and trestle structures. SAP2000 software is used in structural modeling to determine the reliability of structural design against loads acting on the structure. Modeling is carried out until the optimum structural design is obtained, namely the UCR (unity check ratio) which is in the range of 0.7 to 1.0 and is accompanied by deflection conditions that meet the permissible value. The optimum UCR value obtained for the wharf was 0.96, while the UCR value for the trestle 0.92 with deflection for both structures permitted. The forces in the structural elements from the SAP2000 output are used to design the reinforcement of the structural elements. Analysis of the bearing capacity of the soil is also carried out to obtain the required depth and height of piles based on structural reactions and geotechnical data. The wharf is designed to serve the loading and unloading of general cargo with the largest vessel measuring 5,000 DWT, 135 m long, and 12.5 m wide, with a wharf depth of -7.27 LWS and a dock floor elevation of +2.4 m from LWS. The trestle which is designed to connect the wharf with the mainland has a length of 68 m and a width of 6 m with the same floor elevation as the wharf, which is +2.4 m from LWS. To accommodate ships anchored at the pier, there are UE800x1500 (E2) element fender units and tee bollards with a capacity of 30 tons installed on the wharf. The structural elements in the pier and trestle consist of piles, beams, plates and pile cap. The piles on the pier have a diameter size of 609.6 mm with a thickness of 11.9 mm, while the piles on the trestle have a diameter size of 406.4 mm with a thickness of 11.13 mm. There are several types of beams and plates located on a pier with a trestle to meet the needs of the pier design. In general, the beams on the pier and trestle are 1000 mm thick and 500 mm wide. The plate on the dock has a thickness of 250 mm, while the plate on the trestle has a thickness of 150 mm. The pile cap in these two structures is determined based on the diameter of the respective piles as well as other needs. So, the wharf pile cap has a dimension of 1300 mm x 1300 mm x 1500 mm, while the trestle pile cap has a dimension of 900 mm x 900 mm x 1500 mm. Reinforcement for the pier and trestle concrete structural elements is carried out for each type of beam, slab, and pile cap. Based on the results of the analysis of the carrying capacity of the soil, it is found that the required depth of pile foundation piling and design pile height is obtained as follows. For the wharf structure, it takes a piling depth of 16 m with a height of all design piles for a wharf of 24 m. Meanwhile, for the trestle structure, a piling depth of 14 m is required. The design piles for the trestle are generally 18 m, except for two piles at the sides of the pier with a 2 m distance in between them, a design pile height of 24 m is required.