Geometrical optimization shape and parameter optimization algorithm for parameterized cross section of floating tunnel

Abstract

The invention discloses a geometric optimization shape and parameter optimization algorithm for a parameterized cross section of a floating tunnel. The geometric optimization shape and parameter optimization algorithm comprises the following steps: 1, determining a geometric scale of the cross section of the floating tunnel according to engineering construction requirements; 2, constructing a parameterized function curve to describe the combined section shape meeting the size limitation requirement, and determining optimization parameters and constraint conditions; 3, obtaining indexes such ashydrodynamic performance and structural attributes of the cross section of the suspension tunnel under a series of different parameter combinations and using same for establishing an optimization algorithm sample set and determining an initial training set and a test set; and 4, determining the suspension tunnel cross section parameter combination and the cross section shape of the optimal hydrodynamic performance or structural attribute and the like by optimizing an algorithm flow. The optimal parameter variable combination is determined through the parameterized geometrical shape of the suspension tunnel cross section in combination with the intelligent optimization algorithm, the optimal geometrical shape of the suspension tunnel cross section is determined, the hydrodynamic performance of the suspension tunnel can be improved, and the engineering cost is reduced.

Description

technical field [0001] The invention relates to the technical field of water engineering construction, in particular to a parametric cross-section geometrically optimized shape of a suspended tunnel, and an optimized design algorithm flow thereof. Background technique [0002] The geometry of the cross-section of a floating tunnel has a direct impact on hydrodynamic properties, space utilization, structural behavior, and construction costs. Therefore, the cross-sectional geometry design of the floating tunnel becomes one of the main factors in the structural design and optimization, which should be determined in the initial stage of the project, such as the feasibility analysis stage. Based on the existing research results at home and abroad, the research on the cross section of the floating tunnel is mainly based on common geometric shapes, such as circle, rectangle, polygon, ellipse, ear shape, etc., and the parametric design research on the cross section geometry of the f...

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Problems solved by technology

Based on the existing research results at home and abroad, the research on the cross section of the floating tunnel is mainly based on common geometric shapes, such as circle, rectangle, polygon, ellipse, ear shape, etc., and the parametric design research on the cross section geometry of the floating tunnel is carried out. still blank

[0003] In addition, the hydraulic environment in which the floating tunnel is located is generally very complex, the flow direction is uncertain, and there are hydraulic conditions such as shear flow, internal wave-induced shear flow, tidal wave, and storm surge. It brings great challenges; the floating tunnel has a large cross-section, a large Reynolds number of the

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