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  • 探头参数(圆锥净截面面积比)

探头参数(圆锥净截面面积比)

探头参数(圆锥净截面面积比)

系数α [-] 表示圆锥净截面面积比,由试验校验测量得到,用于消除侧壁和锥头的不完全吻合带来的不利影响。该系数的常见取值范围为0.7至0.85。

锥头和侧壁连接处不完全吻合的影响(来源:[6], Figure 20, pp. 22)

参考文献:

[1] EN ISO 22476-1: Geotechnical investigation and testing - Field testing. Part 1: Electrical cone and piezocone penetration test, 2013.

[2] EN ISO 22476-3: Geotechnical investigation and testing - Field testing. Part 3: Standard penetration test, 2005.

[3] EN ISO 22476-4: Geotechnical investigation and testing - Field testing. Part 4: Menard pressuremeter test, 2005.

[4] EN ISO 22476-12: Geotechnical investigation and testing - Field testing. Part 12: Mechanical cone penetration test (CPTM), 2009.

[5] Robertson, P. K.: Interpretation of Cone Penetration Tests – a unified approach. Canadian Geotechnical Journal, 2009, No. 46, pp. 1337 – 1355.

[6] Robertson, P. K. and Cabal, K. L.: Guide to Cone Penetration Testing for Geotechnical Engineering. Gregg Drilling & Testing, Inc., USA, 6th edition, 2014, 133 p.

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