A prefabricated reinforced concrete simply supported beam bridge deck pavement maintenance structure and construction method

Abstract

The invention discloses a prefabricated reinforced concrete simply-supported girder bridge deck pavement and maintenance structure. The structure comprises a cement concrete pavement layer with single-layer reinforcing steel bars or double-layer reinforcing steel bars, and the cement concrete pavement layer is coated with a bond waterproof layer with ester adhesives as primer, and a colloidal concrete pavement layer formed by blending a curing agent, polyurethane and aggregate is laid on the bond waterproof layer; and an anti-sliding layer is arranged on the colloidal concrete pavement layer. The invention further discloses a construction method of the prefabricated reinforced concrete simply-supported girder bridge deck pavement and maintenance structure. Compared with the prior art, the structure has the beneficial effects that a novel material is adopted, the thicknesses of all structural layers are more reasonable, the performance of the structural layers is more prominent, the bonding strength between the upper pavement layer and the lower pavement layer is good, construction is convenient, and the maintenance cost is low.

Description

technical field [0001] The invention relates to a road surface pavement structure technology, in particular to a treatment technology and construction method for deck pavement defects of prefabricated reinforced concrete simply supported beam bridges. Background technique [0002] In the early years, multi-span prefabricated reinforced concrete simply supported girder bridges with small and medium spans were widely used in engineering, and 13-20m prestressed hollow slab girders were especially used in large quantities. reinforced concrete continuous structure. Due to flaws in the design, the construction quality cannot be fully guaranteed. During operation, a large number of overloaded and over-limited vehicles will encounter long-term repeated action, and the beam-slab hinged concrete and the continuous joint structure of the bridge deck will be more likely to be damaged. Therefore, after being put into use for a certain number of years, the beam-slab hinged concrete and t...

AI Technical Summary

Problems solved by technology

Due to the limitation of the thickness of the structural layer, the above-mentioned defects cannot be completely eradicated, so hidden dangers still exist, and the waterproof performance is poor, and the service life is difficult to guarantee; Option 2, cancel the asphalt concrete pavement layer, use single-layer cement concrete pavement, and configure double-layer reinforcement , this design improves the stiffness and bearing capacity of the pavement, but it also inherits the shortcomings of the concrete bridge deck, such as skid resistance, poor driving comfort, strong reflections that are easy to dazzle, difficult maintenance, etc., and poor water resistance

Images