Novel construction method of precast slab assembled floating road bed

Abstract

The invention discloses a novel construction method of a precast slab assembled floating road bed. The method comprises the following steps of: laying a central line of a floating road bed base and an encryption foundation mark for positioning a plurality of floating road bed precast slabs to be paved; laying a lifting control line of each floating road bed precast slab and a tool positioning hole for auxiliary positioning; mounting an auxiliary tool according to the tool positioning hole, and mounting the floating road bed precast slabs on the floating road bed base in sequence according to the auxiliary tools and the lifting control lines, and connecting into an integral floating road bed; and mounting inner sleeves of a vibration isolator inside each floating road bed precast slab in sequence, and carrying out integral leveling and jacking. The novel construction method of the precast slab assembled floating road bed disclosed by the invention is simple in construction procedure, short in construction period, high in construction efficiency and good in construction quality, and is convenient for the safety inspection of the floating road bed in later use; and the damaged parts out of work can be replaced.

Description

technical field [0001] The invention relates to the technical field of rail transit construction, in particular to a construction method of a prefabricated slab-assembled floating ballast bed. Background technique [0002] The construction project of the steel spring floating slab ballast bed in the prior art has many contents, complex procedures and long construction period. For example, in the construction method disclosed in the Chinese Patent Utility Application No. 20120118256, titled "A Prefabricated Steel Spring Floating Slab Track Construction Technology", firstly, the base of the floating slab track bed is measured and laid out; Set the slab ballast bed base for reinforcement binding and concrete pouring construction, and transport the processed prefabricated floating slabs to the track laying base of the ballast bed slab for storage; then, lay multiple prefabricated floating slabs sequentially from front to back and complete the assembly; finally , install rails o...

AI Technical Summary

Problems solved by technology

[0004] 1) It is necessary to pre-arrange multiple pads on the base of the floating ballast bed, which increases the preparation work for construction and wastes manpower and time;

[0005] 2) The side-mounted vibration isolator needs to be installed, and the inner sleeve of the vibration isolator needs to be installed on the prefabricated floating plate before installing the side-mounted vibration isolator, so it is necessary to repeatedly check the side-mounted vibration isolator and the inner sleeve of the vibration isolator Therefore, the construction time is increased and the construction progress is affected;

[0006] 3) When installing the prefabricated floating plate, both the side-mounted vibration isolator and the inner sleeve of the vibration isolator are under pressure, so it cannot be guaranteed that the side-mounted vibration isolator and the inner sleeve of the vibration isolator are evenly stressed after jacking up, and it is easy to Cause damage to the side-mounted vibration isolator and the inner sleeve of the vibration isolator;

[0007] 4) Shear hinges are required to connect and fix adjacent prefabricated floating slabs, which are pre-buried in the prefabricated floating slabs and cannot be inspected. Once damaged and invalid, they cannot be replaced, which is detrimental to the track structure and train operation Impact

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