A system and method for predicting fatigue damage to pavement structures
A technology for pavement structure and fatigue damage, which is applied in the direction of testing material strength by applying repetitive force/pulsation force, testing material strength by applying stable tension/pressure, and measuring devices, which can solve the scientific basis for road maintenance and road monitoring data. Problems such as idleness, inability to make full use of road monitoring and prediction of road fatigue damage, etc., to avoid periodic reconstruction, improve accuracy, and avoid structural damage
Active Publication Date: 2022-04-19
SHANDONG HI SPEED GRP CO LTD +2
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Pavement service performance monitoring is a key link in the construction of smart expressways. At this stage, the monitoring of expressway pavement service performance is still limited to collecting road surface parameters such as road speed, axle load, and temperature through the deployment of monitoring equipment. Predict the fatigue damage of the pavement and realize the early warning of the fatigue damage of the expressway pavement, resulting in a large amount of pavement monitoring data being idle, unable to play the role of pavement monitoring and the prediction of the fatigue damage of the pavement, and thus unable to provide scientific information for the pavement maintenance of the expressway. in accordance with
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0063] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0064] In this embodiment, the expressway in Jinan, Shandong Province is taken as an example, and the experimental road section is selected on the expressway. The experimental road section is an asphalt pavement, and the pavement structure is as follows: figure 1 As shown, adopting a kind of method for predicting the fatigue damage of pavement structure that the present invention proposes predicts the fatigue damage of pavement structure of experimental road section, specifically comprises the following steps:
[0065] Step 1. Obtain the pavement parameters of the experimental road section. The pavement structure of the experimental road surface is set as asphalt layer, granular material layer and base layer in sequence from top to bottom, and the thickness of the asphalt layer is It is 180mm, and the granular material layer is set t...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention provides a system for predicting pavement structure fatigue damage, which relates to the technical field of road engineering. It includes a traffic axle load measuring device, a pavement structure mechanical response measuring device, a pavement structure temperature measuring device, a crack measuring device and a pavement data processing device. The present invention also provides a method for predicting fatigue damage of pavement structure, by obtaining pavement parameters and measurement data, using mechanical calculation software to calculate the bottom strain of the asphalt layer, and establishing the pavement structure fatigue after calibration with the measured bottom strain The damage model determines the total damage of the asphalt layer, and then uses the pavement structure crack calculation model to calculate the area percentage and length percentage of the cracks in the pavement structure. After calibration with the actual measurement data of the crack measuring device, the pavement structure crack development prediction model is established to predict the road surface Development tendency of cracks in structures. The invention realizes the prediction of the fatigue damage of the pavement structure, and provides a basis for the repair and maintenance of the pavement structure.
Description
technical field [0001] The invention relates to the technical field of road engineering, in particular to a system and method for predicting fatigue damage of pavement structures. Background technique [0002] The expressway network plays a vital role in the economic development of the society. my country has built the largest expressway network in the world. The construction of smart expressways with "smart cars" and "smart roads" as the main features is an important part of the road transportation industry. The major demand for transformation and development is the only way for my country to develop from a transportation powerhouse to a transportation powerhouse. Pavement service performance monitoring is a key link in the construction of smart expressways. At this stage, the monitoring of expressway pavement service performance is still limited to collecting road surface parameters such as road speed, axle load, and temperature through the deployment of monitoring equipmen...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/34G01N3/08
CPCG01N3/08G01N3/34G01N2203/0003G01N2203/0005G01N2203/0019G01N2203/0033G01N2203/0073G01N2203/0218G01N2203/0244G01N2203/0252G01N2203/0647G01N2203/0676G01N2203/0682G01N2203/0694
Inventor 周勇王林韩文扬吕思忠韦金城马士杰
Owner SHANDONG HI SPEED GRP CO LTD