An in-situ soil parameter measurement device based on pressure penetration testing
A technology of parameter measurement and in-situ soil, which is applied in the fields of geotechnical, geological and environmental research, can solve the problems of inability to accurately measure the physical characteristic parameters of shallow soil, and achieve the effect of improving accuracy
Active Publication Date: 2021-11-05
DALIAN UNIV OF TECH
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Problems solved by technology
That is to say, the traditional full-flow penetrometer cannot accurately measure the physical characteristic parameters of shallow soil
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[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0024] The purpose of the present invention is to provide an in-situ soil parameter measurement device based on pressure penetration testing, to solve the above-mentioned problems in the prior art and improve the measurement accuracy of in-situ soil engineering parameter characteristics.
[0025] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail bel...
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The invention discloses an in-situ soil parameter measurement device based on pressure penetration testing, which includes a work cylinder, a loading and data acquisition system, a probe rod, a probe, a pressurized capsule and a pressurized part. For the test, the work cylinder is inserted into the soil In the body, the loading and data acquisition system controls the slow loading of the probe until the probe touches the soil surface, and uses the pressurizing part to input the pressurized medium into the pressurized capsule. Extrude to improve the accuracy of test results. Control the pressure in the pressurized capsule through the pressurized parts until the soil surface in contact with the working cylinder is subjected to the uniform design load exerted by the pressurized capsule. The loading and data acquisition system controls the probe rod Unloading, conduct soil characteristic parameter test. In addition, the in-situ soil parameter measurement device based on pressure penetration testing of the present invention can also be used for in-situ soil consolidation characteristic tests.
Description
technical field [0001] The invention relates to the technical field of geotechnical, geological and environmental research, in particular to an in-situ soil parameter measurement device based on pressure penetration testing. Background technique [0002] Geotechnical in-situ testing refers to the investigation and testing of the engineering properties of soil in situ. Geotechnical in-situ testing can determine the relevant engineering mechanical properties of undisturbed soil samples that are difficult to obtain; it can avoid the influence of stress release during the sampling process; the influence range is large and the representativeness is strong. Static penetration testing (CPT, CPTU, etc.) and full-flow penetration testing are currently widely used in-situ tests, which are fast, direct and accurate. The commonly used probe forms for full-flow penetration testing are T-bar and ball-bar. The measurement principle is to statically press the probe into the soil at a const...
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IPC IPC(8): G01N3/12G01N3/02G01N19/00
CPCG01N3/02G01N3/12G01N19/00G01N2203/0019
Inventor 于龙张荷月王忠涛王泽明
Owner DALIAN UNIV OF TECH