MULTILAYERED FILTER PROTECTIONS WITH DIFFERENT RIPRAP SIZES AGAINST LOCAL SCOUR OF SAND BED
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- Suzuki Koichi
- 社団法人 土木学会 愛媛大学 工学部環境建設工学科
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- Yamamoto Hironori
- 社団法人 土木学会 愛媛大学 工学部環境建設工学科
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- Tokuyasu Yoshinori
- 社団法人 土木学会 日本道路公団
Bibliographic Information
- Other Title
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- 逆フィルターを利用した捨石洗掘防止工に関する基礎的研究
- ギャク フィルター オ リヨウシタ ステイシ センクツ ボウシコウ ニ カンス
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Abstract
Riprap protection works against local scour of sand bed are practical and effective if the riprap size is large enough and the protected bed sand is not drawn out through the riprap filter. These stability conditions were studies experimentally, and the results are applied for the design of multilayered filter protections with different riprap sizes to reduce the total thickness of the protection works. The critical ratio of riprap (D/d)c of riprap size D to bed sand size d for phisically possible movement of sand through riprap porosity was determined, and the damping of the tractive force through the riprap filter was expressed as a function of the ratio L/D of filter thickness L to the riprap size. And examples of practical design of the multilayered filter protections were shown.
Journal
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- Doboku Gakkai Ronbunshu
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Doboku Gakkai Ronbunshu 1997 (572), 1-9, 1997-08-21
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390001205308377728
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- NII Article ID
- 130003982733
- 10001837466
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- NII Book ID
- AN10014020
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- ISSN
- 18827187
- 02897806
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- NDL BIB ID
- 4292757
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed