Significance of subgrade damping on structural evaluation of pavements

Chen-Ming Kuo, Ting Yi Tsai

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Falling weight deflectometer (FWD) has been widely adopted to generate a transient loading on pavement to simulate a moving wheel on the road. Although damping effects influence structural responses in dynamic conditions, it was usually neglected in pavement evaluations. This study presented the pavement responses of finite element analysis of FWD tests on various types of subgrade soils. The results showed that subgrade damping significantly influences pavement deflections of FWD tests. Among the types of soils, the analysis results revealed that gravel subgrade has the least damping effect on dynamic deflections. Deflection velocity was found to be crucial to interpret the importance of soil damping in FWD tests. The simulated pavement responses of the FWD test are different from that caused by a moving vehicle.

Original languageEnglish
Pages (from-to)455-464
Number of pages10
JournalRoad Materials and Pavement Design
Volume15
Issue number2
DOIs
Publication statusPublished - 2014 Jan 1

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Pavements
Damping
Soils
Gravel
Wheels
Finite element method

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering

Cite this

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Significance of subgrade damping on structural evaluation of pavements. / Kuo, Chen-Ming; Tsai, Ting Yi.

In: Road Materials and Pavement Design, Vol. 15, No. 2, 01.01.2014, p. 455-464.

Research output: Contribution to journalArticle

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