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Title:

New Mechanistic–Empirical Approach for Estimating the Effect of Roughness on Vehicle Durability

Accession Number:

01333253

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States
Order URL: http://www.trb.org/Main/Blurbs/166429.aspx

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Order URL: http://worldcat.org/isbn/9780309167505

Abstract:

Vehicle manufacturers place a major focus on improving the design of vehicle components to respond better to changes in road surface profiles. Nevertheless, changes in the surface profile still directly affect user costs including repair and maintenance (R&M) costs and damage to goods. For example, AASHTO reported that poor road conditions added an estimated $76.8 billion to transport costs annually. The objective here is to estimate the effect of roughness, as expressed by the international roughness index, on vehicle durability and R&M costs. First, the R&M costs of Zaniewski et al. (the latest comprehensive research conducted in the United States) are updated by multiplying their reported costs by the inflation rate of R&M costs between 1982 and 2007. Then a mechanistic–empirical (M-E) methodology is proposed to estimate the effect of roughness on R&M costs. The proposed approach is based on fatigue damage analysis by using numerical modeling of the vehicle response. Finally, the results from the M-E approach are compared with the empirical results (updated Zaniewski tables) and found to be very close up to 5 m/km. The standard error is about 2%. Also, a case study of the I-69 section near Lansing, Michigan, is presented. This detailed analysis is useful for identifying those segments of the road within a project that cause higher operating costs to the traveling vehicles. These localized rough sections could then be subject to maintenance activities in order to remedy the problem.

Monograph Accession #:

01358795

Report/Paper Numbers:

11-3297

Language:

English

Authors:

Zaabar, Imen
Chatti, Karim

Pagination:

pp 180-188

Publication Date:

2011

Serial:

Transportation Research Record: Journal of the Transportation Research Board

Issue Number: 2227
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

9780309167505

Media Type:

Print

Features:

Figures (8) ; References (26) ; Tables (2)

Geographic Terms:

Subject Areas:

Highways; Pavements; I23: Properties of Road Surfaces

Files:

TRIS, TRB, ATRI

Created Date:

Feb 17 2011 6:28PM

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