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Liquefaction judgment method based on standard penetration and static cone penetration test correlation

A technology of standard penetration test and static penetrating sounding, which is applied in the field of foundation soil survey, foundation structure engineering, sampling, etc., and can solve the problems of data not fully functioning and collation

Active Publication Date: 2014-12-31
CEEC JIANGSU ELECTRIC POWER DESIGN INST CO LTD +1
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Problems solved by technology

However, due to the failure to systematically organize these data in time, many in-situ test data have not established corresponding relationships, making these data not fully functional

Method used

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  • Liquefaction judgment method based on standard penetration and static cone penetration test correlation
  • Liquefaction judgment method based on standard penetration and static cone penetration test correlation
  • Liquefaction judgment method based on standard penetration and static cone penetration test correlation

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Embodiment Construction

[0066] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation, structure, features and effects of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. rear.

[0067] A liquefaction discrimination method based on the correlation between standard penetration and static penetration tests, comprising the following steps:

[0068] (1) Firstly, determine the selection principles of test holes for standard penetration tests and comparison holes for static penetration tests;

[0069] (2) Define the representative soil layer, determine the standard penetration parameter N value corresponding to each representative soil layer, and determine the cone tip resistance q in the static penetration test corresponding to the standard penetration parameter N value c value and side friction resistance f s The read...

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Abstract

The invention relates to a liquefaction judgment method based on standard penetration and static cone penetration test correlation. A principle of selecting a static cone penetration test contrast hole of a standard penetration test hole and a reading method for a standard penetration parameter value N and a static cone penetration parameter tip resistance value qc are provided; three influence factors of clay content rhoc, average particle size D50 and soil parameter alphap are considered, the value N and the value qc are fitted, and a statistically correlative relationship of N-qc is provided; and on the basis, a foundation soil liquefaction judgment method based on a static cone penetration test is provided. By the method, the liquefaction judgment of foundation soil can be made relatively quickly and accurately; and compared with the conventional method, the method is simple, economic and quick, and has a good engineering application value.

Description

technical field [0001] The invention relates to a liquefaction discrimination method based on the correlation between standard penetration and static penetrating tests, and belongs to the field of foundation soil liquefaction discrimination. Background technique [0002] At present, the standard penetration test is the most widely used and standardized method in the field of foundation soil liquefaction identification. The biggest advantage of this method is that it can simultaneously collect soil samples for indoor tests during the test process. The disadvantage is that it is labor-intensive. It requires a large investment in material and financial resources, and its parameter standard penetration parameter N value has a large dispersion. The static penetrating test is widely used in our country. It has good stability, is simple and economical, and can obtain continuous information of the soil layer, and even weak thin layers can be detected. The disadvantage of this metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/00E02D1/00
Inventor 赵学亮陈念军黄志宏任亚群刘欣良龚维明马骁孙焯宋志远刘益平王先勇贾尚瑞
Owner CEEC JIANGSU ELECTRIC POWER DESIGN INST CO LTD
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