Precast pile, beam and slab renovation technology for diseases of existing line tunnel base

Abstract

The invention discloses a precast pile, beam and slab renovation technology for diseases of an existing line tunnel base. The technology is used for reinforcing and renovating of a tunnel which is large in base disease range and serious in disease condition. Piles, beams and slabs are prefabricated outside a hole, restrained beams are used for erecting lines overhead, drilling is conducted, precast piles are embedded, cement slurry is poured, the beams are erected on the piles, the slabs are paved, and railway ballast is backfilled. According to the precast pile, beam and slab renovation technology for the diseases of the existing line tunnel base, the piles, the beams and the slabs are all prefabricated outside the hole, the aspects of materials, dimensions, maintenance and the like are all guaranteed, end product quality is high, and durability is achieved. The pile, beam and slab prefabricating technology is adopted, concentrated batch production can be achieved, the construction time inside the hole can be reduced, the time limit for a project is shortened, and an operation influence is reduced. After the precast piles, the beams and the slabs are constructed, later period maintenance is relatively easy. The precast pile, beam and slab renovation technology has the advantages of being practical, rapid, safe, easy to renovate and thorough in disease treatment.

Description

Technical field [0001] The invention relates to the field of tunnel construction, and is particularly suitable for the treatment of large-scale and serious bottom diseases of tunnels. Background technique [0002] The bottom of the railway tunnel is the base structure of the track, and the solidity and stability of the base structure is the first condition to ensure the good condition of the track. Due to the weak structural durability design, unreasonable drainage design, defective construction technology, poor quality, inadequate daily maintenance and maintenance, and natural and human factors at the bottom of the tunnel, the bottom of the tunnel is subject to repeated train dynamics and groundwater erosion. Cracking, damage, subsidence, extrusion to both sides, mud turning, and mud emergence. These diseases will cause gauge deviation, rail and joint fracture. If things go on like this, it will adversely affect railway operations and passenger comfort, and even endanger ...

AI Technical Summary

Problems solved by technology

Due to the strong concealment of the tunnel structure and the limitations of existing detection methods, the severity and development trend of the tunnel damage can only be gradually revealed with the deepening of the renovation construction.

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