Method for determining optimum maintenance opportunities of pavements on basis of pavement performance models before and after maintenance

A technology for pavement performance and determination methods, applied in special data processing applications, complex mathematical operations, instruments, etc., can solve problems such as poor maintenance benefits, difficult to determine the analysis period, etc., achieve high accuracy, wide applicability, and avoid difficult estimation or inaccurate effect

Active Publication Date: 2018-03-13
SOUTHEAST UNIV
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  • Abstract
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Problems solved by technology

In the past, when determining the timing of maintenance by maximizing the maintenance benefits, in order to ensure that the maximum value can appear before the pavement performance reaches the maintenance threshold, it is often necessary to determine the analysis period in advance. Due to

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  • Method for determining optimum maintenance opportunities of pavements on basis of pavement performance models before and after maintenance
  • Method for determining optimum maintenance opportunities of pavements on basis of pavement performance models before and after maintenance
  • Method for determining optimum maintenance opportunities of pavements on basis of pavement performance models before and after maintenance

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Embodiment Construction

[0035] Taking the 168 asphalt pavement maintenance projects in the long-term pavement performance database (LTPP) in the United States as an example, the method for determining the best maintenance timing in the embodiment of the present invention will be described in detail.

[0036] 1. Establish the IRI performance model before and after the implementation of each maintenance project, using a linear model, and the model has a high degree of fitting, such as figure 2 with image 3 As shown, through the IRI value and the corresponding time tk 2 , b 2 、k 1 , b 1 value, and record these 168 conservation items k 2 , b 2 、k 1 , b 1 value of .

[0037] 2. Pass k in step 1 2 , b 2 、k 1 , b 1 Corresponding values, denoted by k 2 , b 2 is the dependent variable, k 1 , b 1 Build a multiple linear regression model for the independent variables, such as Figure 4 ~ Figure 5 shown, and determined k 2 , b 2 with k 1 , b 1 The relational formula:

[0038] k 2 =-0.008...

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Abstract

The invention discloses a method for determining optimum maintenance opportunities of pavements on basis of pavement performance models before and after maintenance. The method comprises the followingsteps of: determining two pavement performance decay models before and after maintenance according to performance detection indexes of a practical pavement maintenance project over the years, whereinthe performance detection indexes over the years comprise a flatness index IRI, a track depth RD and the like; establishing relationship between parameters of the two models, predicting a pavement performance model after the maintenance by using a pavement performance model before the maintenance, defining a maintenance benefit as enveloping areas between performance curves before and after the maintenance and a maintenance threshold value, and expressing the enveloping areas by functions of the parameters of the performance model before the maintenance; and finally, determining a value of acorresponding parameter when the maintenance benefit is the maximum so as to determine an optimum maintenance opportunity and providing important basis for road maintenance and management decisions. When the method is used for determining the optimum maintenance opportunity, an analysis period does not need to be determined in advance, so that the method has wide applicability.

Description

technical field [0001] The invention relates to a highway management and decision-making technology, in particular to a method for determining the best maintenance time of the road surface. Background technique [0002] In order to ensure the safety, functionality and structure of the road, it is necessary to carry out timely maintenance on the road. Different from pavement reconstruction, pavement maintenance is carried out before a large number of diseases appear, and generally can effectively delay the decline of pavement performance and restore pavement functions. Studies have shown that every dollar spent on pavement maintenance can save $6 to $10 in subsequent pavement reconstruction. Therefore, formulating an effective maintenance plan is an important task of the highway maintenance management department, and the key to highway maintenance management decision-making is to choose a reasonable maintenance method and timing. [0003] The concept of optimal maintenance ...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06F17/18
CPCG06F17/18G06F30/13G06F30/367
Inventor 陈雪琴董侨姚琳怡倪富健顾兴宇
Owner SOUTHEAST UNIV
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