Pavement interlayer structure void state detection method and system and use method thereof

Abstract

The invention provides a pavement interlayer structure void state detection method and system and a use method thereof. The method comprises the following steps: performing a seismic source excitationstep; to be specific, knocking a pavement by exciting a seismic source to generate an elastic wave; performing an array type data acquisition step; to be specific, collecting elastic wave data generated by the excitation source on the road surface by using detectors arranged in an array; performing a waveform evaluation step; to be specific, removing the noise influence in the elastic wave data,calculating the impact energy of the elastic wave, and evaluating a pavement void state through the impact energy; and performing a three-dimensional model reconstruction step; to be specific, reconstructing a three-dimensional model in a void state. According to the invention, rapid detection and imaging of the void area can be realized; the void position and severity can be visually represented;the integration degree is high; and the method and system are convenient to use.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a method, system and use method for detecting void state of pavement interlayer structure. Background technique [0002] Concrete pavement has many advantages such as high strength, high rigidity, strong durability and good integrity, and has been widely used in infrastructure projects such as roads and bridges. During the use of the concrete pavement, it was found that the disease that has the greatest impact on driving is the void of the pavement. The main cause of the void is that the repeated action of the wheel load causes a slight plastic deformation of the slab foundation, and the gap between the pavement and the base Small voids appear, and a large amount of road surface water seeps into the void layer. Under the cyclical action of vehicle load and environmental factors, the void area gradually expands, thereby reducing the quality of vehicle traffic on the road surface, ...

AI Technical Summary

Problems solved by technology

During the use of the concrete pavement, it was found that the disease that has the greatest impact on driving is the void of the pavement. The main cause of the void is that the repeated action of the wheel load causes a slight plastic deformation of the slab foundation, and the gap between the pavement and the base Small voids appear, and a large amount of road surface water seeps into the void layer. Under the cyclic effect of vehicle load and environmental factors, the void area gradually expands, thereby reducing the quality of vehicle traffic on the road surface, and even threatening driving safety.

[0003] Since the void area is located under the pavement, people cannot directly judge whether the pavement is void from the surface state. The empirical method is often used for repairs, which is not targeted, and the pavement without void is forcibly grouted , it will cause disturbance to the original well-connected plate body, resulting in plate breakage

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