Abstract
This paper takes the dock hoisting technology of the large stereo garage block of 7800PCTC (Pure Car and Truck Carrier, PCTC) as research object. Due to the needs of loading vehicles, this kind of block has large structural size and weight, and the lack of vertical and horizontal bulkhead support in the middle, resulting in weak overall structural strength and structural instability and deformation during hoisting. Firstly, according to the hoisting process principle, three layouts of hoisting points are formulated, and the best hoisting points layout scheme is selected through FE (Finite Element, FE) simulation analysis. After analysing the deformation and structural strength of the section, a targeted temporary strengthening scheme is proposed according to the analysis results. The strengthened FE calculation results show that, the stress concentration and excessive structural deformation under the selected layout scheme are effectively controlled. The calculation results provide a strong guarantee for the hoisting in the dock loading stage.
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