分割型ランマーを用いた簡易貫入試験機の分解能の向上 Improvement of resistance value in simple penetration tests using a variable impact weight

この論文にアクセスする

この論文をさがす

著者

抄録

This paper proposes a new type of impact weight for simple penetration tests that is variable from 1- to 5-kgf in 1-kgf increments. Many simple penetration tests were conducted to estimate the effect of this weight in three actual forests. Experimental results provide a detailed description of the vertical distribution of penetration resistance values within the surface soil layer by using 2- and 3-kgf weights, which are lighter than conventional ones, i.e., 5-kgf. The ratio of penetration resistance values by using impact weights 5-kgf, 3-kgf, and 2-kgf, i.e., N<sub><i>5kgf</i></sub> : N<sub><i>3kgf</i></sub> : N<sub><i>2kgf</i></sub>, is nearly equal to 1.00:2.02:3.66. In addition, N<sub><i>3kgf</i></sub> nearly equals the resistance value obtained with Hasegawa's soil penetration test. These results show that variable impact weight is very useful for accurately estimating the physical characteristics of soil within forest slope where hillside collapse is liable to occur.

収録刊行物

  • 砂防学会誌 : 新砂防 = Journal of the Japan Society of Erosion Control Engineering  

    砂防学会誌 : 新砂防 = Journal of the Japan Society of Erosion Control Engineering 60(5), 47-53, 2008-01-15 

    社団法人 砂防学会

参考文献:  4件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10021228144
  • NII書誌ID(NCID)
    AN1056478X
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    02868385
  • NDL 記事登録ID
    9360356
  • NDL 雑誌分類
    ZR21(科学技術--農林水産--林産) // ZN1(科学技術--建設工学・建設業)
  • NDL 請求記号
    Z18-495
  • データ提供元
    CJP書誌  NDL  J-STAGE 
ページトップへ