Large cylindrical loess remolded sample preparation equipment with controllable initial conditions, and sample preparation method

An initial condition and loess technology, applied in the field of soil property testing in geotechnical engineering, can solve problems such as difficulty in uniform sample preparation and inability to control initial conditions, and achieve the effect of improving test efficiency and reducing boundary effects and size effects

Pending Publication Date: 2020-09-25
CHANGAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention provides a large-scale cylindrical loess remodeling sample preparation equipment and a sample preparation method with controllable initial conditions to overcome the problem that the existing large-scale soil column test cannot control the initial conditions and is difficult to uniformly prepare samples

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  • Large cylindrical loess remolded sample preparation equipment with controllable initial conditions, and sample preparation method

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Embodiment Construction

[0042]In order to make the purpose and technical solution of the present invention clearer and easier to understand. The present invention will be further described in detail below in conjunction with the drawings and embodiments. The specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0043] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orie...

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Abstract

The invention discloses large cylindrical loess remolded sample preparation equipment and method with controllable initial conditions. The sample preparation equipment comprises a counter-force base,a cylinder body and a pressure plate, wherein the counter-force base is provided with a pressurizing device for applying pressure to the pressure plate, a sample preparation cylinder is fixed on the counter-force frame base, the cylinder body comprises the sample preparation cylinder and an auxiliary cylinder fixed on the sample preparation cylinder, and during sample preparation, the pressurizingdevice applies pressure to remolded loess in the cylinder body through the pressure plate. Through the combination of the sample preparation cylinder and the auxiliary cylinder, the required remoldedloess sample can be calculated in advance according to the volume of the sample preparation cylinder in the sample preparation process, so that when the calculated mass is used for preparing the sample, the mass and the volume are known, and the dry density rho d and the moisture content omega are controllable.

Description

technical field [0001] The invention belongs to the technical field of soil property testing in the subject of geotechnical engineering, and in particular relates to a large-scale cylindrical loess remodeling sample preparation device and method with controllable initial conditions. Background technique [0002] China has reshaped the Loess Plateau with ravines and ravines. With the development of urbanization, some areas have been reshaped by flat mountains and cities. When backfilling with remolded loess, the original structure of remolded loess is strongly disturbed, and the engineering geological and hydrogeological conditions of the site are reconstructed. Therefore, under external loads, it is easy to cause large-scale subsidence and uneven settlement of the foundation soil, causing cracks in buildings, and even failure of the foundation, collapse of buildings, and disasters. Therefore, it is of great practical significance to carry out geotechnical tests on the resha...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
CPCG01N1/28G01N1/286
Inventor 张亚国李纪恒翟张辉李同录黄沛
Owner CHANGAN UNIV
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