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Title:

Effect of Moving Dynamic Loads on Pavement Deflections and Backcalculated Modulus

Accession Number:

01659013

Record Type:

Component

Abstract:

In this study, an existing finite layer program, ViscoWave, has been used for simulating the pavement deflections under a moving load. To simulate the deflections measured by Traffic Speed Deflection Devices (TSDDs), the moving frame analysis methodology was utilized to generate the deflections at various observation points moving with the load. A comparison between the deflections from a fixed point and a moving observation point is established initially under a constant load as well as a simple sinusoidal dynamic load. Then, the moving frame methodology is coupled with a mechanical vehicle model and a set of smooth and rough pavement profiles to demonstrate the effect of dynamic loading. The results indicated that dynamic loads may have a significant effect on the deflections measured by the TSDDs and the backcalculated modulus, especially for rougher pavements from which significant oscillation is generated in the vehicle motion and the resulting dynamic loads.

Supplemental Notes:

This paper was sponsored by TRB committee AFD80 Standing Committee on Pavement Structural Modeling and Evaluation.

Report/Paper Numbers:

18-01768

Language:

English

Authors:

Lee, Hyung Suk
Von Quintus, Harold
Steele, Douglas

Pagination:

21p

Publication Date:

2018

Conference:

Transportation Research Board 97th Annual Meeting

Location: Washington DC, United States
Date: 2018-1-7 to 2018-1-11
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Identifier Terms:

ViscoWave (Computer program)

Uncontrolled Terms:

Finite layer method; Layer moduli

Subject Areas:

Highways; Pavements

Source Data:

Transportation Research Board Annual Meeting 2018 Paper #18-01768

Files:

TRIS, TRB, ATRI

Created Date:

Jan 8 2018 10:26AM