A Method for Determining the Pavement Thickness of Asphalt Overlay on Cement Concrete Pavement

A technology of overlay and cement concrete, which is applied in the field of road construction, can solve problems such as insufficient shear resistance, and achieve the effect of ensuring the shear thickness

Active Publication Date: 2021-05-28
CHONGQING JIAOTONG UNIVERSITY
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to provide a research on the shearing problem between the cement concrete pavement asphalt overlay, from the perspective of design rationality, aiming at the various problems of the current overlay layer due to insufficient shearing resistance, a comprehensive solution is made. Analytical and researched method for determining the pavement thickness of asphalt overlay on cement concrete pavement

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  • A Method for Determining the Pavement Thickness of Asphalt Overlay on Cement Concrete Pavement
  • A Method for Determining the Pavement Thickness of Asphalt Overlay on Cement Concrete Pavement
  • A Method for Determining the Pavement Thickness of Asphalt Overlay on Cement Concrete Pavement

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[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0041] In describing the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element...

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Abstract

The invention discloses a method for determining the pavement thickness of the asphalt overlay on cement concrete pavement, calculating the shear stress of the asphalt overlay on the cement concrete pavement, and obtaining the shear stress data of the asphalt overlay on the cement concrete pavement in combination with the elastic multi-layer system management theory, And compare and analyze the shear stress data obtained with the reference data; carry out indoor tests to obtain the test data of the self-shear strength of each layer and the shear strength of each layer, and obtain the shear envelope of the overlay layer according to the Mohr-Coulomb criterion. curve; compare the shear stress data with the test data, and obtain the value of the pavement thickness based on the interlayer shear strength of the overlay. To achieve the research on the shear resistance between asphalt overlays on cement concrete pavement, from the perspective of design rationality, a comprehensive analysis and research is made on the various problems of the current overlay layer due to insufficient shear resistance, and it is determined that the cement concrete pavement The pavement thickness of the asphalt overlay is to ensure the shear thickness of the overlay.

Description

technical field [0001] The invention relates to the technical field of road construction, in particular to a method for determining the pavement thickness of an asphalt overlay on a cement concrete road surface. Background technique [0002] In the current asphalt overlay design of cement concrete pavement, whether it is the deflection method of the American Asphalt Association (AI), the insufficient thickness gap method of the US Army Corps of Engineers (COE), the American AASHTO empirical method, or the "Highway Cement Concrete Pavement Design The methods of the Standard (JTG D40-2002) are all designed for reflective cracks on the pavement. The main control parameters are the deflection value of the pavement and the value of the interlayer bending and tensile stress. Considering the interlayer shear strength of the package disease problem, and it is precisely this kind of problem that may be the cause of many road diseases (especially mountainous urban roads). In addition...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C7/35G01N3/24G06F30/13G06F30/23G06F119/14
CPCE01C7/353G01N3/24G01N2203/0075G01N2203/0226G01N2203/0605G01N2203/0682
Inventor 傅翔黄平班宇鑫谢强王侠茜曾彬涂义亮向茂铭
Owner CHONGQING JIAOTONG UNIVERSITY
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