The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 2024
Filed:
Oct. 26, 2021
Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Hubei, CN;
Zheng Lu, Wuhan, CN;
Chuxuan Tang, Wuhan, CN;
Hailin Yao, Wuhan, CN;
Jie Liu, Wuhan, CN;
Yongxiang Zhan, Wuhan, CN;
Xingwen Luo, Wuhan, CN;
Mingliang Yang, Wuhan, CN;
Yang Zhao, Wuhan, CN;
Abstract
A device and method for health diagnosis of subgrade service performance, including: a loading device, which applies a load to a road; a data acquisition device, which collects stress and vertical displacement generated by a pavement layer when a load is applied; a data analysis device, that performs a frequency spectrum analysis on a vertical displacement signal to obtain a propagation speed of a Rayleigh wave of a pavement layer and a thickness of the pavement layer, and thereby obtains an elastic modulus of the pavement layer; inputting the stress, vertical displacement, elastic modulus and thickness of pavement layer into a trained subgrade soil modulus calculation model to obtain an elastic modulus of subgrade soil; and obtaining a dynamic deformation value of the subgrade under a standard load, and evaluating a health state of the subgrade according to the dynamic deformation value.