Title:
METHOD AND APPARATUS FOR CALCULATING PAVEMENT CAVITY MOISTURE CONTENT BASED ON RADAR NONDESTRUCTIVE TESTING
Document Type and Number:
WIPO Patent Application WO/2022/095536
Kind Code:
A1
Abstract:
The present invention relates to a method for calculating pavement cavity moisture content based on radar nondestructive testing, comprising the following steps: setting an excitation source of a forward modeling process, and establishing a three-dimensional finite element equation of propagation of electromagnetic waves of the forward modeling process in a pavement mixture; acquiring thickness parameters of each structural layer of a pavement to be measured, obtaining a relative dielectric constant of a mixture of said pavement, and constructing a three-dimensional road model by combining the thickness parameters and the relative dielectric constant; establishing three-dimensional cavity models with different moisture contents on the basis of the three-dimensional road model; performing forward modeling on each three-dimensional cavity model on the basis of the excitation source and the three-dimensional finite element equation, to obtain single-channel reflection oscillograms corresponding to the three-dimensional cavity models with different moisture contents; establishing an association model between the moisture contents and the reflection waveforms according to the single-channel reflection oscillograms corresponding to the three-dimensional cavity models with different moisture contents; and calculating the moisture content of said pavement according to the association model. According to the present invention, quantitative analysis of the pavement cavity moisture content can be realized.
Inventors:
LUO RONG (CN)
SHU YU (CN)
CHENG BOWEN (CN)
YU XIAOHE (CN)
LI CHONG (CN)
WANG BIAO (CN)
SHU YU (CN)
CHENG BOWEN (CN)
YU XIAOHE (CN)
LI CHONG (CN)
WANG BIAO (CN)
Application Number:
PCT/CN2021/112710
Publication Date:
May 12, 2022
Filing Date:
August 16, 2021
Export Citation:
Assignee:
UNIV WUHAN TECH (CN)
International Classes:
G01S13/88; G01N27/22
Foreign References:
| CN112363163A | 2021-02-12 | |||
| CN108875211A | 2018-11-23 | |||
| CN107748392A | 2018-03-02 | |||
| US20160313443A1 | 2016-10-27 |
Other References:
QIU HUAIZHONG: "Research on Interpretation Technology of Pavement Water Cavern Radar Detection Image Based on GPR Forward Modeling Technology", TRANSPORTATION SCIENCE & TECHNOLOGY, no. 6, 31 December 2020 (2020-12-31), pages 79 - 84, XP055928991, ISSN: 1671-7570, DOI: 10.3969/j.issn.1671-7570.2020.06.019
CHEN JIE, LING TONG-HUA;LIU HAO-RAN;YANG YU: "Forward Simulation and Experimental Analysis of Ground Penetration radar for the Underground Cavities", JOURNAL OF TRANSPORT SCIENCE AND ENGINEERING, vol. 34, no. 3, 30 September 2018 (2018-09-30), pages 31 - 37, XP055928978, ISSN: 1674-599X, DOI: 10.16544/j.cnki.cn43-1494/u.2018.03.006
CHEN JIE, LING TONG-HUA;LIU HAO-RAN;YANG YU: "Forward Simulation and Experimental Analysis of Ground Penetration radar for the Underground Cavities", JOURNAL OF TRANSPORT SCIENCE AND ENGINEERING, vol. 34, no. 3, 30 September 2018 (2018-09-30), pages 31 - 37, XP055928978, ISSN: 1674-599X, DOI: 10.16544/j.cnki.cn43-1494/u.2018.03.006
Attorney, Agent or Firm:
WUHAN ZHI JIA JOINT INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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