Roadbed freezing injury treatment device capable of vertically partitioning and gradually reducing pressure

Abstract

In combination with frost heaving and thaw collapse diseases of railroad beds in seasonal frozen soil areas in China, a railroad bed freezing injury treatment device capable of releasing frost heavingforce step by step in a vertical partition mode is provided. The device is composed of a reinforced concrete supporting box body, a plurality of reinforced concrete movable panels, a low-friction-coefficient isolation layer, a spring set, an embedded sleeve with a thread, a guide rod with a thread, an embedded sleeve and a rubber protection layer. The panel of the device is designed in a layeringand blocking mode, the number of blocks can be flexibly determined according to specific use conditions, the panel block design can release frost heaving force in a blocking mode in the soil body freezing process to enable springs to store energy, and when the soil body melts, the energy storage springs can push movable plates at the corresponding melting positions to move outwards to extrude thesoil body, and the roadbed rigidity is improved; the subgrade thaw collapse amount is reduced, the improvement effect is more obvious, the conditions that the whole panel inclines, so that the devicefails, frost heaving force is not released in time and the like are avoided, and the working performance and reliability of the device are improved.

Description

technical field [0001] The invention relates to the field of freezing damage treatment of railway subgrades in seasonally frozen soil regions, and relates to a subgrade freezing damage treatment device that releases frost heaving force in different regions and gradually reduces pressure. According to the existing research results and related test results, and according to the development characteristics of freezing damage, a device is designed. The utility model relates to a subgrade frost damage treatment device for stepwise decompression in vertical partitions. Background technique [0002] According to the duration of the soil in the frozen state, frozen soil can be divided into seasonal frozen soil and permafrost. Seasonally frozen soil refers to the soil whose surface layer is frozen in winter and completely thaws in summer. It will not freeze for more than one season in a year. Permafrost is frozen soil that lasts for many years and does not thaw for many years. my c...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is mainly to overcome the shortcomings of existing devices that cannot release frost heaving force uniformly and cannot be used in areas with high moisture content, and propose a roadbed frost damage treatment device that gradually reduces pressure in vertical partitions. The panels are designed in layers and blocks, and the number of blocks can be flexibly determined according to the specific usage conditions. The block design of the panels can release the frost heaving force in blocks during the freezing process of the subgrade filling, so that the remediation effect is more obvious, and there will be no overall The inclination of the panel makes the device invalid and the frost heaving force is not released in time, which improves the working performance and reliability of the device

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