Tunnel portal flexible nose-shaped rolling stone discharging and guiding shed tunnel structure and designing method thereof

Abstract

The invention belongs to the field of hydraulic engineering and rolling stone prevention and control engineering and relates to a tunnel portal flexible nose-shaped rolling stone discharging and guiding shed tunnel structure and a designing method thereof. The structure comprises multiple lambdoidal prevention and control individuals which are arranged along a slope, every two adjacent prevention and control individuals are in stacked-tile socketed connection or seamless sequential connection, each prevention and control individual comprises two truss structure ceilings which are mounted on a slope energy-consuming damping anchoring base through a supporting structure, and a composite energy-consuming cover plate covers each truss structure ceiling. The designing method aims to determine integral structural size and spatial position of a discharging and guiding shed tunnel and thickness of an energy-consuming damping material of a bearing platform. The tunnel portal flexible nose-shaped rolling stone discharging and guiding shed tunnel structure is simple in structure, unitary in component, standard in size, conducive to factory-scale production and quality control, beneficial to transporting and mounting in alpine canyon areas and good for subsequent maintenance due to modularized structure.

Description

technical field [0001] The invention belongs to the fields of water conservancy engineering and rolling stone prevention and control engineering, and relates to a flexible nose-shaped rolling stone row guiding shed structure at a tunnel mouth and a design method thereof. Background technique [0002] With the advancement of my country's western development strategy, the transportation industry in the western mountainous area is booming, and corresponding bridge and tunnel projects abound. However, due to the special geological and landform environment, landslides and rolling rocks in the western mountainous areas are serious, and roads, especially tunnel entrances, are often damaged by rolling rocks, resulting in traffic blockages and seriously affecting economic and social development. [0003] As one of the most effective and common engineering technologies for rolling rock prevention and control, shed tunnels have been widely used on a large scale in the prevention and co...

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Problems solved by technology

[0006] Of course, traditional barrier-type sheds are mostly reinforced concrete structures, which have "high construction costs", "long construction period", "difficult to build in alpine and canyon areas", "difficult to repair after damage", and "large self-weight increases the load of bridges and tunnels". " and other unfavorable factors also limit its application in tunnel entrances, and there is an urgent need for a new type of light-weight, energy-consuming, convenient and efficient new type of shed.

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