Cast-in-place prestressed concrete pavement structure and construction method thereof

Abstract

The invention discloses a cast-in-place prestressed concrete pavement structure. The pavement structure comprises a lane pre-cast strip, a curb post-cast strip and an inter-lane post-cast strip which are all laid on a roadbed, and the lane pre-cast strip comprises transverse steel bars and longitudinal steel bars which are arranged along the pavement structure at intervals, and a concrete slab which is used for connecting the steel bars into a whole in a pouring manner; transverse ends are inserted into the curb post-cast strip or the inter-lane post-cast strip, prestress is applied to the portions, located in the lane pre-cast strip, of the transverse steel bars, and no prestress is applied to the portions, located in the curb post-cast strip and the inter-lane post-cast strip, of the transverse steel bars. The invention further discloses a construction method of the prestressed concrete pavement structure. The invention has the beneficial effects that the prestressed reinforced concrete is adopted, and the relatively high rigidity and crack resistance of the prestressed concrete under the lane are utilized, so that the pavement can be prevented from cracking, and the service life of the pavement is prolonged.

Description

technical field [0001] The invention relates to road construction technology, in particular to a cast-in-place prestressed concrete pavement structure and a construction method thereof. Background technique [0002] Improving the service life of pavement is the long-term pursuit of the road traffic industry. However, due to the material characteristics of concrete with strong compressive capacity and poor tensile capacity, it is very easy to cause concrete pavement cracking under temperature and wheel load. When the concrete pavement cracks, the rainwater on the road surface will invade the interior of the road along the cracks, causing corrosion of steel bars and softening and damage of the roadbed, leading to further cracking of the road. [0003] In order to avoid the above problems, the traditional treatment methods mainly include two aspects, one is to increase the reinforcement ratio of the concrete pavement, such as the concrete pavement structure with double-layer r...

AI Technical Summary

Problems solved by technology

Although the traditional method reduces the generation of concrete pavement cracks to a certain extent and improves the life of the pavement, the economic cost is extremely high, and it is difficult to be widely promoted and popularized except for a few arterial roads.

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