Tunnel ditch insulation structure

Abstract

The invention relates to a tunnel ditch insulation structure. In a traditional tunnel drainage ditch, a double-layer cover plate insulation ditch is commonly used, insulation materials are added in the middle of the double-layer cover plate insulation ditch, the mode that angle steel is embedded on the side wall of the ditch and a cover plate is placed on the angle steel is used for mounting the second cover plate layer, construction difficulty is large, the cover plate can fall easily to plug the ditch for the reasons of breakages, size errors and the like, and water draining is not smooth. According to the tunnel ditch insulation structure, a reinforcing steel bar support with a U-shaped cross section is arranged above a ditch in a tunnel, the bottom face of the reinforcing steel bar support is higher than the water surface in the ditch, and the reinforcing steel bar support is filled with insulation materials. The top edge of the reinforcing steel bar support is bent to the two sides in the horizontal direction and is placed in ditch wall surface chisel grooves formed in the two sides of the top of the ditch, cement mortar is used for flattening the ditch wall surface chisel grooves, and a ditch cover plate covers the reinforcing steel bar support. The tunnel ditch insulation structure can achieve the insulation purpose of tunnel ditches in cold regions, and has the advantages of being simple in construction, convenient to replace, saving in investment and the like.

Description

technical field [0001] The invention belongs to the technical field of tunnel traffic engineering, and in particular relates to a tunnel gutter heat preservation structure. Background technique [0002] my country has built a large number of tunnel projects in cold regions such as Northwest and Northeast. In winter, the temperature at both ends of the tunnel is relatively low. In areas where the average temperature of cold months is lower than -10°C), it is easy to cause the water in the drainage ditch to freeze and gradually spread to the outside of the ditch, thereby endangering driving safety. How to take effective measures to ensure that the drainage in the tunnel is not frozen and discharged smoothly, so as to avoid diseases and ensure driving safety has always been a concern and headache for technicians. The traditional tunnel drainage ditch generally adopts double-layer cover plates to insulate the gutter, adding insulation materials in the middle, and the installati...

AI Technical Summary

Problems solved by technology

The traditional tunnel drainage ditch generally adopts double-layer cover plates to insulate the gutter, adding insulation materials in the middle, and the installation of the second layer of cover plate adopts the method of pre-embedding angle steel on the side wall of the ditch, and the cover plate is placed on the angle steel, which makes the construction difficult , Due to damage, dimensional error and other reasons, the cover plate is easy to fall and block the ditch, resulting in poor drainage, making the water in the ditch more likely to freeze and forming diseases

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