A method for processing seabed in-situ test data

A technology of in-situ testing and processing methods, applied in the field of foundation soil survey, construction, infrastructure engineering, etc., can solve problems such as the influence of undrained shear strength, increase in shear strength, etc., and achieve the effect of real and reliable data results

Active Publication Date: 2021-03-30
OCEAN UNIV OF CHINA
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Problems solved by technology

It is known in the art that an increase in strain rate leads to an increase in shear strength under undrained conditions, so penetration rate has an effect on undrained shear strength

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  • A method for processing seabed in-situ test data
  • A method for processing seabed in-situ test data
  • A method for processing seabed in-situ test data

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Embodiment Construction

[0040] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0041] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two compo...

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Abstract

The invention discloses a processing method of seabed in-situ test data and belongs to the oceanographic engineering geological exploration field. The processing method of the seabed in-situ test datacomprises the steps that a tip resistance correction factor is obtained through a laboratory experiment by means of ratio relevant calibrators; in the process of utilizing a seabed in-situ test device to penetrate into seabed sediment, pressure variation, dynamic penetration rate and dynamic penetration tip resistance are obtained; according to the pressure variation, earth pressure is obtained;according to the tip resistance correction factor, the dynamic penetration rate, static penetration rate, the dynamic penetration tip resistance, the earth pressure and probe coefficient, undrained shear strength is obtained, wherein the static penetration rate is a constant value, and the probe coefficient is a constant value. When the parameters of the penetration process are processed, the dynamic penetration rate is used as one of influence factors of the undrained shear strength, the influence of strain rate on the shear strength is taken into full consideration, so that the obtained undrained shear strength can better accord with actual working conditions, and the data result is more real and more reliable.

Description

technical field [0001] The invention relates to the field of marine engineering geological exploration, in particular to a method for processing seabed in-situ test data. Background technique [0002] With the development of marine engineering, the demand for testing the mechanical properties of seabed sediments has become increasingly significant. At present, methods such as static sounding and dynamic sounding are mostly used to investigate the strength of various stratum soils on the seabed. Compared with conventional drilling and sampling exploration methods, the method of sounding has the advantages of rapidity and economy. [0003] Static CPT is to penetrate the soil layer at a certain rate (usually 20mm / s), and the penetration rate is relatively low, which is not enough to produce obvious dynamic effects. The whole penetration process can be considered as quasi-static, so the cohesive soil The undrained shear strength has almost nothing to do with the penetration vel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D1/00
CPCE02D1/00
Inventor 张民生王秀海魏志明
Owner OCEAN UNIV OF CHINA
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