2006年10月
Behavior of buried flexible pipe under high fills and design implications
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
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- 巻
- 132
- 号
- 10
- 開始ページ
- 1354
- 終了ページ
- 1359
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1061/(ASCE)1090-0241(2006)132:10(1354)
- 出版者・発行元
- ASCE-AMER SOC CIVIL ENGINEERS
The existing design guidelines for buried flexible pipes are limited to depth up to 10 m. The increasing use of difficult terrains for infrastructure, landfills, and residential and industrial developments has prompted installation of drainage pipelines under 20-30 m high fills. This paper presents the behavior of an instrumented flexible pipe buried under a 47.1 m deep fill. For filling above 20 m, the measured vertical stress above the pipe exhibited a concave distribution, corresponding to 90 and 110% of the average vertical pressure at the center and edges of the pipe, respectively. The measured results suggest that a triangular lateral pressure distribution can lead to overly conservative and uneconomical results for high fills while Spangler's analysis is unconservative. Based on the measured results, a revised vertical and lateral earth pressure diagram was proposed for the design of flexible pipe under high fills > 20 m. This paper proposes closed-form analyses for estimating the moments and displacements of the pipe subjected to high fill earth pressures. These closed-form solutions agree well with the measured pipe displacements and strains.
- リンク情報
- ID情報
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- DOI : 10.1061/(ASCE)1090-0241(2006)132:10(1354)
- ISSN : 1090-0241
- Web of Science ID : WOS:000240763000012