A hydrodynamic analysis method for a tunnel suspended in water

Abstract

The invention discloses a hydrodynamic analysis method for a tunnel suspended in water, comprising: according to the shape coefficient of the pipe section, the influence coefficient of the roughness of the pipe section, the influence coefficient of the suspension depth, the water density, the maximum water flow velocity, the length of the suspended pipe section, and the direction along the water flow of the pipe section The cross-sectional height of the pipe section and the angle between the design water flow direction are used to calculate the standard value of the frontal impact force of the water flow force of the pipe section; according to the vortex lift coefficient, water density, maximum water flow velocity, length of the suspended pipe section, cross-sectional height of the pipe section along the water flow direction, The vortex frequency and vortex characteristic time are used to calculate the standard value of the cross-flow lift of the pipe section. The invention provides a simplified force calculation method for the suspended state of the tunnel, which is of great significance to the analysis of the force situation of the tunnel in the overall design of the early stage of the project.

Description

Technical field [0001] The present invention relates to the field of tunnel design, and more particularly to a tunnel in water suspension state affected by water dynamic analysis. Background technique [0002] my country is a marine big country, with a coastline of 18,000 km, across 22 latitude belts; there is more than 6,500 islands, the island shore wire is 14,000 km; also has a total length of 430,000 kilometers, of which is 1000 kilometers There are more than 20 rivers. There are nearly 100 people in the country, the vast majority of the rivers, the river, but the rivers and the ocean segment the city or region, urgently need to build a channel of cross-river Yuehai to make the country form a whole fast transportation Road Network. [0003] The tunnel has the advantages of all-weather, does not affect the ability of shipping and anti-war struggle, is one of the main ways to build cross-river crossing. Tunnel engineers have been exploring how high quality build underwater tunn...

AI Technical Summary

Problems solved by technology

[0004] For a long time, there has been a lack of applicable theoretical calculation formulas as design guidance for the hydrodynamic calculation of immersed tunnels or floating tunnels in the suspended state of the tunnel section.

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