Design Of Dolphin Structure For Coal Terminal In Tudi Bay, North Gorontalo

• Main Author: Suciana
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/43081
• Institution: Institut Teknologi Bandung

Indonesia is one of the largest producers and exporters of coal in the world (ranked 9th by contributing 2.2% of the total coal reserves in the world). 81.79% of domestic coal needs are used as fuel for PLTU. One of the provinces in Indonesia, Gorontalo, took part in the construction of a power plant to meet the electricity needs of coal fuel. In supporting coal needs from outside the island, coal loading and unloading docks are planned in Teluk Tudi, North Gorontalo Regency, Gorontalo Province with dolphin types and deck on pile structures. The planned dock consists of loading platforms, breasting dolphin, mooring dolphin, and trestle. The scope of the final project includes an explanation of the planning design criteria, load calculation on structure, determination of structural dimensions, structural modelling, structural reinforcement design, and geotechnical analysis. Dolphin design refers to the British Standard, structural design refers to SNI 1729: 2015 for steel and SNI 2847: 2013 for concrete. Structural modelling is carried out using SAP2000 software to determine the reability of the plan structure against the working load. The results of modeling are Unity Check Ratio (UCR), structural deflection, force in beams and plates, and base reactions. The planned coal dock structure produces UCR between 0.8 and 1.0 with beams and piles deflection comply the deflection permit limit. The internal force is used for reinforcing concrete structures and base reaction is used to determine the piling depth of structure foundation. Based on geotechnical analysis result, the structural foundation for loading platform, breasting dolphin, mooring dolphin, and trestle is piled until 21 m, 27 m, 20 m, and 20 m below the seabed.