Method for calculating bituminous pavement heating power control in hot in place recycling process

A technology of asphalt pavement and regeneration process, which is applied in the field of heating power control calculation of asphalt pavement, and can solve the problems of unstudied heating power and limited guidance of heating power control

Inactive Publication Date: 2016-08-31
CHANGAN UNIV
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  • Application Information

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Problems solved by technology

However, these literatures have not studied the influence of heating power on the temperature field of asphalt pavement durin...

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  • Method for calculating bituminous pavement heating power control in hot in place recycling process
  • Method for calculating bituminous pavement heating power control in hot in place recycling process
  • Method for calculating bituminous pavement heating power control in hot in place recycling process

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Embodiment Construction

[0044] The present invention will be further explained below in conjunction with specific embodiments and accompanying drawings.

[0045] The present invention comprises the following steps:

[0046] (1) Establishing the unsteady heat conduction model of asphalt pavement

[0047]The asphalt pavement exists in the form of a whole, and the heater can only be located above the asphalt pavement, and the heat energy is input from the surface of the asphalt pavement through convection (hot air) or radiation (although microwave heating has a certain penetration, but due to the large installed power demand, currently not yet available for asphalt pavement heating in hot-in-place recycling processes), such as figure 1 shown;

[0048] (2) Establish the unsteady heat conduction equation of asphalt pavement

[0049] Considering the asphalt pavement as a multi-layer elastic system structure, in order to simplify the calculation model of asphalt pavement heat conduction, the following as...

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Abstract

The invention discloses a method for calculating bituminous pavement heating power control in a hot in place recycling process, and aims at providing reliable basis for the bituminous pavement heating power control in the hot in place recycling process through researching the influences, on the bituminous pavement temperature fields, of heating power. An adopted technical scheme is that the method comprises the following steps: 1) establishing a bituminous pavement unsteady state heat conduction model; 2) establishing and simplifying a bituminous pavement unsteady state heat conduction equation; 3) solving the bituminous pavement unsteady state heat conduction equation; 4) simulating bituminous pavement unsteady state heat conduction. According to the method, the relationship between the heating power and the temperature rising characteristics, heating times and thermal power of bituminous mixtures in the bituminous pavement heating link of a bituminous pavement hot in place recycling process is deeply researched on the basis of a heat transfer theory, so as to provide references for the bituminous pavement heating power control.

Description

technical field [0001] The invention belongs to the technical field of highway asphalt pavement regeneration, and in particular relates to a method for controlling and calculating the heating power of asphalt pavement during in-situ heat regeneration. Background technique [0002] As of the end of 2014, the total mileage of China's highways reached 4.4639 million kilometers, of which the total mileage of expressways reached 111,900 kilometers, surpassing the United States to become the world's first, and roads paved with asphalt concrete accounted for a large proportion. With the rapid development of my country's economy and road construction, the tonnage of vehicles continues to increase, and more and more railway freight is turned to fast and flexible road transportation. The increase in traffic volume, the increase in tire pressure, the increasing load and the increase in service life have all accelerated the aging of the road. The asphalt pavement has various degrees of ...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06F17/13
CPCG06F17/13G06F30/20
Inventor 顾海荣董强柱张珲李金平岳珂张吉星
Owner CHANGAN UNIV
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