Wet joint structure and construction method suitable for prefabricated pavement

Abstract

The invention discloses a structure and a construction method suitable for wet joints of assembled pavement. The prefabricated cement road slab is reserved with prestressed channels, and the slab surface is provided with dowel rods and chiseled; the cement board is hoisted on the smooth sliding layer On the top, the wet joint position is reserved and the formwork is installed at its end. The bellows connects the prestressed tunnels of the two adjacent slabs and passes through the reinforcement; Connection; tensioning of prestressed tendons, and pouring cement slurry from the grouting port. The invention arranges wet joints and stretches prestressed tendons, enhances the integrity of the road surface, and improves the shear resistance; solves the problem of difficult assembly and docking of the assembled prestressed road surface, and speeds up the construction progress; Pouring micro-expansion high-performance concrete to solve the problems of easy fracture and water leakage at the joints of prefabricated prestressed road slabs, improve structural stability, and prolong the service life of the road surface.

Description

technical field [0001] The invention relates to the field of cement concrete pavement, in particular to a wet joint structure and construction method suitable for prefabricated pavement. Background technique [0002] Cement concrete pavement is widely used because of its high strength, strong bearing capacity, good stability and long service life. However, due to the influence of temperature and construction conditions on ordinary cement concrete pavement, a large number of joints need to be set. Seams destroy the continuity and smoothness of the road surface, affecting driving comfort. At the same time, the joints are channels for water seepage in the pavement area. Under the action of traffic load, it is easy to cause diseases such as mud pumping, slab bottom void, fragmentation, and misplacement, which affect the durability of the pavement. [0003] Prefabricated prestressed concrete pavement offsets the tensile stress generated in the concrete slab by pre-applying comp...

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Problems solved by technology

[0007] In order to solve the problems raised in the background technology, the present invention provides a wet joint structure and construction method suitable for prefabricated pavement, which solves the difficulty of leveling and docking the prefabricated pavement while ensuring the normal function of the prestressed concrete pavement. problem, and greatly improved the shear capacity of the pavement, prolonging the service life

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