Permanent pavement structure fatigue reliability evaluation method based on parameter bounded distribution

A technology of pavement structure and evaluation method, applied in the direction of sustainable transportation, electric digital data processing, special data processing application, etc., to achieve the effect of large traffic volume, improved production quality, and long service period

Pending Publication Date: 2022-06-03
CHONGQING JIAOTONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the existing research, there are no reports on the reliability evaluation methods and procedures of the permanent asphalt pavement structural surface, base and subgrade.

Method used

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  • Permanent pavement structure fatigue reliability evaluation method based on parameter bounded distribution
  • Permanent pavement structure fatigue reliability evaluation method based on parameter bounded distribution
  • Permanent pavement structure fatigue reliability evaluation method based on parameter bounded distribution

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Embodiment Construction

[0054] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0055] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative relationship between various components under a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly.

[0056] In addition, the descriptions involving "first", "secon...

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Abstract

The invention discloses a permanent pavement structure fatigue reliability evaluation method based on parameter bounded distribution. The method comprises the following steps: 1) obtaining variability statistical characteristics of pavement design input parameters; 2) generating a random number conforming to a classic distribution model according to variability statistical characteristics of the obtained pavement design input parameters; (3) judging whether the generated random numbers conform to a specified interval range or not, and screening the random numbers conforming to the range until the random numbers conform to the parameter truncation distribution model of the specified statistical characteristics in the step (1); 4) establishing a limit state equation Z of a pavement structure fatigue index and an accumulated equivalent axis number; (5) judging the state of the structural performance function according to the steps (3) and (4); (6) setting the cycle index N, repeating the steps (2)-(5), and counting the number p of times when Zi is greater than 0 and the number q of times when Zi is less than 0; 7) based on the step 6), drawing a reliability convergence curve of p / (p + q), and judging reliability convergence; and 8) obtaining the reliability of the pavement structure.

Description

technical field [0001] The invention relates to the field of pavement structure fatigue reliability evaluation, in particular to a permanent pavement structure fatigue reliability evaluation method based on parameter bounded distribution. Background technique [0002] Since the mechanical response expression of pavement structure contains infinite Bessel integral functions that are not easy to be explicit and partial derivatives, the calculation of pavement structure reliability is usually based on numerical simulation such as Monte Carlo method. Before the implementation of the Specification for Design of Highway Asphalt Pavements (JTG D50-2017) in September 2017, the inspection calculation and reliability analysis of the pavement structure mainly revolved around the deflection and bottom tensile stress indicators. In September 2017, the "Code for Design of Highway Asphalt Pavements" (JTG D50-2017) abolished the deflection and other verification indicators, and revised the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F30/20G06F119/02G06F119/04
CPCG06F30/13G06F30/20G06F2119/02G06F2119/04Y02T90/00
Inventor 秦旻张权何兆益张庆余
Owner CHONGQING JIAOTONG UNIVERSITY
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