A kind of prestressed concrete pavement suitable for flat curve road section and its construction method

Abstract

The invention discloses prestressed concrete pavement suitable for a flat curve road section and a construction method thereof. The prestressed concrete pavement includes cement concrete, V-shaped prestressed tendons, reinforcing rebars, an anchorage zone, and a sliding layer, wherein bi-directional prestressed tendons are bent into a V shape and distributed in the cement concrete in the road driving direction, and the reinforcing rebars are arranged in blank areas of the prestressed reinforcement at both ends of the prestressed pavement; the V-shaped prestressing tendons adopt two-times tension, according to a symmetrical tension principle, one-direction prestressing tendons are tensioned successively from one end of the pavement to the other end, and then reverse prestressing tendons aretensioned successively. The prestressed concrete pavement can be used for paving the pavement of a straight road section, has the advantages of ordinary inclined prestressed concrete pavement, and can further adapt to a road line shape of the flat curve road section; and the arrangement mode of the V-shaped prestressed tendons reduces the area of a zone where the prestressed tendons cannot be arranged at both ends of the ordinary inclined prestressed concrete pavement, the pavement stress state is optimized; and fixed form prestressed tendons are convenient for construction, installation andpositioning.

Description

technical field [0001] The invention relates to the field of cement concrete pavement, in particular to a prestressed concrete pavement suitable for flat curve road sections. Background technique [0002] Cement concrete pavement has the advantages of high strength, strong bearing capacity, good stability and long service life, and can withstand road traffic loads of large tonnage and large flow. However, due to the influence of temperature and construction conditions, ordinary cement concrete pavement needs to set a large number of joints, which becomes the weak point of ordinary cement concrete pavement. 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. In addition, the jo...

AI Technical Summary

Problems solved by technology

This invention also arranges straight prestressed tendons obliquely, which cannot be applied to flat curved road sections, and there are many holes reserved in the road slab. When the road surface width is large and the distance between prestressed tendons is small, it is easy to overlap the holes at the end of the slab.

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