Dynamic stress study in pavement subgrade under a major highway in Hong Kong

Gordon L M Leung; Zhen Leng; Alan W G Wong

doi:10.1061/9780784413418.040

Dynamic stress study in pavement subgrade under a major highway in Hong Kong

Gordon L M Leung, Zhen Leng, Alan W G Wong

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

1 Citation (Scopus)

Abstract

Flexible pavements are relatively thick in Hong Kong. Their thicknesses are generally designed to be at least 300 mm, generally due to high traffic volume. The design is based on the fatigue failure concept of the main structural layer (i.e. roadbase) after a prolonged number of traffic passages and, in turn, it is highly related to the stress levels being experienced in the pavement layers, including the subgrade. This paper presents the data collected on the dynamic stresses of the subgrade layer by soil pressure gauges under a major highway in Hong Kong. The results illustrate that the vertical stresses are in the range of 0.5 to 5kPa. These correspond well to the theoretical analysis results obtained by the software mePADs, by using the typical properties of the pavement layers. Subsequently, horizontal stresses at the bottom of the roadbase were also estimated. These fundamental findings provide an important yardstick for the review of design and analysis for fatigue life of flexible pavements in Hong Kong.

Original language	English
Title of host publication	Pavement Materials, Structures, and Performance - Selected Papers from the Proceedings of the 2014 GeoShanghai International Congress
Publisher	American Society of Civil Engineers (ASCE)
Pages	403-413
Number of pages	11
Edition	239 GSP
ISBN (Print)	9780784413418
DOIs	https://doi.org/10.1061/9780784413418.040
Publication status	Published - 1 Jan 2014
Event	2014 GeoShanghai International Congress: Pavement Materials, Structures, and Performance - Shanghai, China Duration: 26 May 2014 → 28 May 2014

Conference

Conference	2014 GeoShanghai International Congress: Pavement Materials, Structures, and Performance
Country/Territory	China
City	Shanghai
Period	26/05/14 → 28/05/14

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology
Civil and Structural Engineering
Building and Construction
Architecture

More information

10.1061/9780784413418.040

Cite this

Leung, G. L. M., Leng, Z., & Wong, A. W. G. (2014). Dynamic stress study in pavement subgrade under a major highway in Hong Kong. In Pavement Materials, Structures, and Performance - Selected Papers from the Proceedings of the 2014 GeoShanghai International Congress (239 GSP ed., pp. 403-413). American Society of Civil Engineers (ASCE). https://doi.org/10.1061/9780784413418.040

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Leung, GLM, Leng, Z & Wong, AWG 2014, Dynamic stress study in pavement subgrade under a major highway in Hong Kong. in Pavement Materials, Structures, and Performance - Selected Papers from the Proceedings of the 2014 GeoShanghai International Congress. 239 GSP edn, American Society of Civil Engineers (ASCE), pp. 403-413, 2014 GeoShanghai International Congress: Pavement Materials, Structures, and Performance, Shanghai, China, 26/05/14. https://doi.org/10.1061/9780784413418.040

Dynamic stress study in pavement subgrade under a major highway in Hong Kong. / Leung, Gordon L M; Leng, Zhen; Wong, Alan W G.
Pavement Materials, Structures, and Performance - Selected Papers from the Proceedings of the 2014 GeoShanghai International Congress. 239 GSP. ed. American Society of Civil Engineers (ASCE), 2014. p. 403-413.

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

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Dynamic stress study in pavement subgrade under a major highway in Hong Kong

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