Method for predicting hot in-place recycling heating temperature field of asphalt pavement

Abstract

The invention discloses a method for predicting a hot in-place recycling heating temperature field of an asphalt pavement. The method comprises the following steps: constructing a numerical simulation model; setting boundary conditions; inputting model parameters; simulating a heating temperature field; and post-processing the numerical simulation data. According to the method for predicting hot in-place recycling heating temperature field of asphalt pavement, the influence of solar radiation, air convection heat exchange, air radiation heat exchange and heating source radiation heat exchange on the asphalt pavement heating temperature field can be comprehensively considered, and accurate simulation can be carried out on different heating machine types, heating machine walking speeds and heating machine reciprocating times; the prediction method has the advantages of high precision, convenience, rapidness, low cost and the like, the prediction result is reliable, the on-site complex heating scheme debugging process can be replaced, and the on-site heating scheme debugging time and cost are remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of hot-in-place regeneration of asphalt pavement, in particular to a method for predicting the heating temperature field of hot-in-place regeneration of asphalt pavement. Background technique [0002] At present, my country's highway construction industry is developing rapidly. As of the end of 2019, the total mileage of national highways has reached 5.0125 million kilometers, of which 149,600 kilometers are expressways. The main pavement structure form of the highway. However, with the rapid development of my country's economy, the traffic load has increased rapidly, and overload and overrun phenomena are common. Rutting has become one of the main diseases of expressways, which seriously affects the driving comfort and service life of asphalt pavement. At present, there are mainly the following rut maintenance methods for the pavement ruts of high-grade highways in my country: micro-surface filling technolo...

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Problems solved by technology

[0004] In order to solve the problem of unsatisfactory heating effect commonly existing in the maintenance process of hot-in-place regeneration of asphalt pavement, the present invention proposes a method for predicting the heating temperature field of hot-in-place regeneration of asphalt pavement, which can quickly and accurately predict the failure of asphalt pavement Geothermal regenerative heating temperature field can replace the complex on-site heating scheme debugging process, significantly reducing the on-site heating scheme debugging time and cost

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