Hydrological simulation device for drainage asphalt pavement and testing method for hydrological simulation device

Abstract

The invention discloses a hydrological simulation device for a drainage asphalt pavement and a testing method for the hydrological simulation device. A testing bearing platform is established in a laboratory, a canopy and a canopy bracket are mounted on the testing bearing platform, a water supply pipeline and a rainfall sprinkle nozzle are mounted on the canopy bracket, a water tank and a water return pipe are arranged in the middle of the testing bearing platform, the water return pipe is connected with the water tank, a wheel movement guide rail and a guide rail bracket are arranged on the testing bearing platform, a wheel towing frame is mounted on the guide rail bracket, a wheel towing motor and a standard wheel are mounted on the wheel towing frame, and a drainage testing pavement is arranged on the testing bearing platform. According to the hydrological simulation device for the drainage asphalt pavement and the testing method for the hydrological simulation device, determination of hydrological parameters such as pavement surface water depth and drainage efficiency of drainage testing pavements under different rainfall conditions and with different vehicle speeds and tire pressures, different pavement gradients and different structures can be simulated, and effective data support can be provided for the design and the construction of the drainage asphalt pavement.

Description

technical field [0001] The invention belongs to the field of highway engineering in traffic and transportation engineering, in particular to a drainage asphalt pavement hydrological simulation device and a test method. Background technique [0002] According to survey statistics, the accident rate of vehicles driving on the expressway in rainy days is 5 to 7 times that in sunny days, and the number of casualties and economic losses in rainy days are much higher than those in sunny days, about 1.8 to 6.2 times that of sunny days. Conventional road surfaces cannot effectively drain rainfall, and water mist or splashes generated by accumulated water on the road surface seriously reduce the visibility of driving on the road surface, and greatly reduce the friction coefficient between the road surface and tires, resulting in frequent accidents in rainy days. In order to solve the above problems, the drainage asphalt pavement has been promoted on expressways, and the large void st...

AI Technical Summary

Problems solved by technology

Regardless of whether the skeleton particle model or the cylindrical core sample is used, or the fixed water head or variable head infiltration meter is used to simulate the inflow and infiltration conditions of the road surface, there is a big difference between the hydrological characteristics of the road surface in the actual operating road under the rainfall environment. For different rainfall conditions The seepage performance of the drainage pavement under the comprehensive influence of factors such as the actual structural void state and the slope of the road surface cannot be accurately evaluated, so that effective test data cannot be obtained to guide the design and construction of the drainage asphalt pavement

Based on the above situation, there is no good indoor simulation test equipment for the influence of different rainfall, pavement porosity and other factors on the hydrological characteristics of drainage asphalt pavement. It is urgent to develop a drainage asphalt pavement that simulates the actual road operation environment. Hydrological simulation test device

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