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An Optimization Design Method of Combination of Steep Slope and Sharp Curve Sections for Mountain Highways
Joint Authors
Source
Mathematical Problems in Engineering
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-03-05
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
As it was found steep slope and sharp curve sections account for 14% of the accident-prone sections according to the accidents data in Chongqing.
Regular design indices with certain thresholds are found not enough for this kind of mountain highways.
The goal of this paper is to find an optimization design method for combination of steep slope and sharp curve sections based on the analysis of vehicle driving stability.
The overall safety model of steep slope and sharp curve combined section is established, and the relevant coordination relationship between design indices of the front and rear alignment unit is established by using the operating speed estimation model.
Taking the maximum slope length corresponding to the specified design speed as the design condition of the front segment, the threshold values and variation rules of the design indices of the rear segment under different design speeds are calculated ensuring driving safety.
The safety model is simulated by CarSim software, the trajectory offset and lateral acceleration are used to indirectly reflect the degree of lateral instability, and the results are compared to verify the effectiveness of the simplified safety model established in this paper.
American Psychological Association (APA)
Yue, Lei& Wang, Hui. 2019. An Optimization Design Method of Combination of Steep Slope and Sharp Curve Sections for Mountain Highways. Mathematical Problems in Engineering،Vol. 2019, no. 2019, pp.1-13.
https://search.emarefa.net/detail/BIM-1194756
Modern Language Association (MLA)
Yue, Lei& Wang, Hui. An Optimization Design Method of Combination of Steep Slope and Sharp Curve Sections for Mountain Highways. Mathematical Problems in Engineering No. 2019 (2019), pp.1-13.
https://search.emarefa.net/detail/BIM-1194756
American Medical Association (AMA)
Yue, Lei& Wang, Hui. An Optimization Design Method of Combination of Steep Slope and Sharp Curve Sections for Mountain Highways. Mathematical Problems in Engineering. 2019. Vol. 2019, no. 2019, pp.1-13.
https://search.emarefa.net/detail/BIM-1194756
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1194756