Simulation device capable of simulating asphalt pavement ruts in longitudinal slope conditions

Abstract

The invention discloses a simulation device capable of simulating asphalt pavement ruts in longitudinal slope conditions. The simulation device comprises two parts including a rut test machine and a test mold. An electromotor of the rut test machine is a variable-frequency electromotor. The traveling speed of test wheels can be controlled through control of the rotate speed of the variable-frequency electromotor by use of a frequency changer, and the traveling speed of the test wheels can be randomly adjusted between 10 times / min (one-way)-60 times / min (one-way). The test mold comprises, from bottom to top, a slope cushion block (15), a test mold baseplate (17) and a test mold sidewall (18). Through use of the simulation device, the traveling speed of the test wheels can be controlled through control of the rotate speed of the variable-frequency electromotor through use of the frequency changer; route longitudinal slope can be simulated through use of the rut test mold provided with the slope cushion block , and longitudinal slope size can be realized through change of the slope angle alpha of the slope cushion block; and the simulation device can simultaneously simulate influences of both vehicle speed and the longitudinal slope on the ruts, so that action modes of wheel load are more in accordance with actual action modes in the longitudinal slope conditions and generated rut test results are more in accordance with actual situations.

Description

technical field [0001] The invention belongs to the technical field of indoor test instruments for evaluation of service performance of highway asphalt pavement, and in particular relates to a simulation device capable of simulating rutting of asphalt pavement under longitudinal slope conditions. Background technique [0002] The rapid development of my country's economy has led to a substantial increase in traffic flow, the traffic channelization of expressways and first-class roads, and the situation of overloading and heavy loading has intensified. In addition to the rare and continuous high temperature in summer, the rutting problem has become a prominent problem affecting the healthy development of my country's roads. question. [0003] At the same time, my country is a country with many mountains and hills. As the expressway continues to extend to the mountainous areas, the problem of "long" and "steep" slopes will inevitably be encountered in route design. The rutting...

AI Technical Summary

Problems solved by technology

[0008] The purpose of this invention is to solve the problem that the previous indoor rutting test studies have neglected the influence of the change of the interaction mode between the wheel and the road surface caused by the longitudinal slope on the rutting. The purpose of comprehensively considering the influence of vehicle speed and longitudinal slope in rutting test

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