Asphalt pavement layer drainage device based on capillary principle and construction method thereof

Abstract

The invention relates to an asphalt pavement layer drainage device based on the capillary principle and a construction method thereof.Theasphalt pavement layer drainage device based on the capillary principle comprises a drainage pipe buried on bottom of an asphalt pavement layer along the transverse direction of a bridge, a water inlet hole is formed in the side surface of the drainage pipe,andcapillary holesleading to the inside of the drainage pipe are formed in the bottom surface of the drainage pipe. The asphalt pavement layer drainage device based on the capillary principle utilizes thecapillary principle, large amount of water accumulation at the junction of the asphalt pavement layer of a bridge deck and concrete or an expansion joint devicedue to a longitudinal slope of the bridge deck can be effectively avoided, and using environment of the asphalt pavement layer of the bridge deck at the interface is improved,cracks or even damage due todegradation of the performance of anasphalt material caused by long-term immersing of the asphalt pavement layer in the water accumulation are prevented, the service life of the asphalt pavement layer is further prolonged, and normal passing of the bridge deck is effectively ensured;theasphalt pavement layer drainage deviceis convenient in construction, easy in construction quality control, the asphalt pavement layer drainage deviceis especially suitable for a bridge structure with the asphalt pavement layer and the expansion joint device, and the asphalt pavement layer drainage device has great application value and good economic benefits.

Description

technical field [0001] The invention relates to an asphalt pavement drainage device based on the capillary principle and a construction method thereof. Background technique [0002] At present, in the bridge deck pavement project, asphalt concrete pavement and ordinary concrete pavement are often connected, and interface gaps often appear at the junction of the two during use. The main reason is the elasticity of asphalt concrete and ordinary concrete. The modulus is different. Under the action of automobile wheel pressure, impact load and temperature load, the deformation of the two is different, resulting in the formation of gaps in the original bonded interface between the two, and the rainwater directly penetrates into the asphalt concrete surface along the interface gap or directly. , and gather along the longitudinal slope to the junction of asphalt pavement and concrete structure (such as expansion joint device), which will cause the asphalt concrete in this part to b...

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Problems solved by technology

[0002] At present, in the bridge deck pavement project, asphalt concrete pavement and ordinary concrete pavement are often connected, and interface gaps often appear at the junction of the two during use. The main reason is the elasticity of asphalt concrete and ordinary concrete. The modulus is different. Under the action of automobile wheel pressure, impact load and temperature load, the deformation of the two is different, resulting in the formation of gaps in the original bonded interface between the two, and the rainwater directly penetrates into the asphalt concrete surface along the interface gap or directly. , and gather along the longitudinal slope to the junction of asphalt pavement and concrete structure (such as expansion joint device), which will cause the asphalt concrete in this part to be soaked in ponding water for a long time, causing the performance degradation of asphalt material and causing cracks or even damage. Significantly reduce the service life of the asphalt pavement layer, seriously affecting the normal traffic of the bridge deck

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