Ballast bed and tunnel bottom defect regulating and constructing method as well as anchoring device

Abstract

The invention discloses a ballast bed and tunnel bottom defect regulating and constructing method as well as an anchoring device. The anchoring device comprises anchor rod and ballast bed slab anchoring ends and ballast bed slab middle anchoring ends, wherein each anchor rod and ballast bed slab anchoring end comprises a combination end, an anchor rod I and deformed steel bars I, the combination end is welded by two pieces of anchor rod clamp-fixing angle steel and a piece of ballast bed slab clamp-fixing angle steel, the two pieces of anchor rod clamp-fixing angle steel are welded on the same surface of the ballast bed slab clamp-fixing angle steel, and an interval allowing the anchor rod I to pass is reserved between the two pieces of angle steel, and the deformed steel bars I are welded on two sides of the combination end respectively; and each ballast bed slab middle anchoring end comprises a bearing plate, an anchor rod II and deformed steel bars II, the bearing plate adopts a crossed steel plate provided with a hole which is formed in the middle and allows the anchor rod II to pass, and the deformed steel bars II are welded on two sides of the bearing plate respectively. According to the ballast bed and tunnel bottom defect regulating and constructing method as well as the anchoring device, the structure is simple, the processing is easy, the problems of baseplate reinforcement and controlling and blocking of opening and closing cracks between the ballast bed slab and the baseplate can be solved effectively, and the purpose of quick, effective and comprehensive regulation of the ballast bed slab and tunnel bottom defects is achieved.

Description

technical field [0001] The invention belongs to the field of existing tunnel overall ballast bed deformation control and tunnel bottom renovation construction technology, and in particular relates to a ballast bed and tunnel bottom disease renovation construction method and an anchoring device. Background technique [0002] With the continuous development of my country's railway construction, the integral ballast bed is widely used in long tunnels because of its good stability and small maintenance workload in the later period. However, with the passage of tunnel operation time, the increase of railway traffic volume, the repeated dynamic load of trains, the influence of groundwater and many other factors, the overall ballast bed is prone to diseases such as the separation of the ballast bed and the floor, the mud and mud of the ballast bed, and cracks in the ballast bed. The influence of the ballast bed disease leads to different degrees of damage and fractures in the tunne...

AI Technical Summary

Problems solved by technology

However, with the passage of tunnel operation time, the increase of railway traffic volume, the repeated dynamic load of trains, the influence of groundwater and many other factors, the overall ballast bed is prone to diseases such as the separation of the ballast bed and the floor, the mud and mud of the ballast bed, and cracks in the ballast bed. The influence of the ballast bed disease leads to different degrees of damage and fracture in the tunnel ditch. The damaged section of the ballast bed in the tunnel is often accompanied by problems such as the opening and closing of the ballast bed and the bottom plate, and water outflow from the diseased section. The suction effect will continuously bring out the fine aggregate in the floor concrete. The long-term effect will lead to the emptying of the floor and the suspension of the track bed. The disease will cause the track plate to break to a certain extent and endanger the safety of the train. Therefore, it is necessary to carry out inspection of the diseased area remediation

[0003] At present, the treatment measures for ballast bed diseases mainly include blocking and dredging groundwater, grouting to strengthen the broken area of ​​the bottom plate, and repairing the diseased ballast bed. There are also certain deficiencies. For example, the renovation of the diseased track bed will easily increase the project investment and affect the operation of the existing railway; a single grouting reinforcement can play a better role in improving the floor, but it often cannot completely control the dynamic settlement of the track slab. The opening and closing gap between the bottom plates is difficult to control

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