Design of Underwater Pile Cap Steel Hanging Box Cofferdam for High-Piled Wharf in Inland River Reservoir Area
This article focuses on the structural characteristics of pile caps and ship-relying components at high-piled wharves,taking into account the significant water level differences in the main channel of the Minjiang River estuary.It builds upon the traditional steel cofferdam by optimizing its structure and introducing innovative features.These include the addition of sealed cavities for ship-relying components and the design of specialized devices for their placement,thereby enabling dry construction conditions for the installation of underwater pile caps and addressing the technical challenges associated with high-piled wharf construction and the installation of ship-relying components.The study conducts a thorough analysis of the most challenging conditions encountered during the construction of steel cofferdams,wharf pile caps,and ship-relying components to establish the appropriate loads and their values.It employs the finite element method to calculate the deformation and stress conditions of the steel cofferdam's various components.This includes evaluations of the cofferdam's bottom plate and walls,tension and pressure rods,shear plates,the compartments for installing ship-relying components,and the temporary fixing measures.All these elements were verified to meet industry standards,ensuring the structural integrity and feasibility of the construction approach under adverse conditions.
inland river reservoir areahigh-piled wharfsteel hanging box cofferdamunderwater pile capcomponents of ship-relyingforce check and calculation
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