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이동차량의 동적 확률모델을 통한 도로 함몰예상지역식별 알고리즘의 개발

Title
이동차량의 동적 확률모델을 통한 도로 함몰예상지역식별 알고리즘의 개발
Other Titles
The Identification of Road Subsidence Zone from Stochastic Modelling of Dynamic Characteristics of a Moving Vehicle
Author
김은주
Keywords
Elastic foundation; Lyapunov solution; Weak foundation identification; Stochastic model
Issue Date
2018-12
Publisher
한국도로학회
Citation
한국도로학회논문집, v. 20, no. 6, page. 31-39
Abstract
PURPOSES: This paper develops a new stochastic approach to analyze the pavement-vehicle interaction model with a certain roughness and elasticity for the pavement foundation, thereby accommodating the deflection of the pavement, and to identify the road subsidence zone represented with a sudden changes in the elasticity of the foundation.METHODS: In the proposed model, a quarter-car model was combined with a filtered white noise model of road roughness and a two-layer foundation (Euler-Bernoulli beam for the top surface and Winkler foundation to represent the sub-structure soil). An augmented state-space model for the subsystems was formulated. Then, because the input is White noise and the system is represented as a single system, the Lyapunov equation governing the covariance of the system’s response was solved to obtain a structurally weak zone index (WZI).RESULTS: The results showed that the WZI from the pavement-vehicle interaction model is sensitive enough to identify road subsidence. In particular, the WZI rapidly changed with a small change in foundation elasticity, indicating that the model has the potential to detect road subsidence in the early stage.CONCLUSIONS: Beacause of the simplicity of the calculation, the proposed approach has potential applications in managing road conditions while a vehicle travels along the road and detecting road subsidence using a device with an on-board computational capability, such as a smart phone.
URI
http://www.ijhe.or.kr/journal/article.php?code=64987https://repository.hanyang.ac.kr/handle/20.500.11754/121009
ISSN
1738-7159; 2287-3678
DOI
10.7855/IJHE.2018.20.6.031
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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