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Geotechnical triaxial test sample preparation split round mold and sample preparation method

A technology of triaxial test and manufacturing method, which is applied in the field of civil engineering equipment, can solve the problems such as the inapplicability of conventional soil sample preparation molds, and achieve the effects of simple structure, good integrity and good preparation effect.

Inactive Publication Date: 2015-02-25
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for the GDS UNSAT system saturation module, conventional soil sample preparation models are not applicable

Method used

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  • Geotechnical triaxial test sample preparation split round mold and sample preparation method
  • Geotechnical triaxial test sample preparation split round mold and sample preparation method
  • Geotechnical triaxial test sample preparation split round mold and sample preparation method

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The present invention starts from Figure 1 to Figure 5 Shown includes a split cylinder, the split cylinder is axially divided into two parts that can be tightly combined: the half cylinder a 27 and the half cylinder b 28 ; The folio is divided into upper, middle and bottom parts. The bottom is the part combined with the base of the test instrument, with a height of 227.6mm and an inner diameter of 54mm; the upper part is the part where the sample cap is placed, with a height of 189.4mm and an inner diameter of 52.1mm; the middle part is the part forming the sample, with a height of 110.6mm, the inner diameter is slightly larger than 50.5mm, which meets the requirements of the specification that the ratio of the height to diameter of the prepared sample is 2.0 to 2.5. The folio can be axially disassembled into two pieces, and the joint form o...

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Abstract

The invention discloses a geotechnical triaxial test sample preparation split round mold and a sample preparation method, belonging to the technical field of civil engineering equipment. The split round mold comprises two parts, namely a split cylinder and a lantern ring, wherein the split cylinder is axially divided into a split cylinder a and a split cylinder b; a U-shaped hole is formed in the split cylinder a; four grooves are formed in the bottom of the split round mold, so that the split round mold is firmly attached to a pressure chamber base; a vacuum exhaust opening is formed in the split cylinder a and is connected with an exhaust bolt and a rubber exhaust guide tube, so that a rubber membrane covers and is tightly attached to the inner surface of the split mold so as to form a uniform sample; the lantern ring is made of stainless steel, the thickness of the lantern ring body is 0.5mm, a bolt rod is connected to the ring body, and the split cylinder can be clamped. The split round mold disclosed by the invention is convenient and rapid to assemble and firm to clamp, the two 1 / 2 split cylinders are spliced to form two connecting gaps, and the manufactured geotechnical triaxial test sample is uniform in compactness, so that reliable geotechnical triaxial test data can be acquired.

Description

technical field [0001] The invention belongs to the technical field of civil engineering equipment, and relates to a split circular mold for preparing a geotechnical triaxial test sample and a method for preparing a geotechnical triaxial test sample. Background technique [0002] The four pillars of soil mechanics are theoretical soil mechanics, experimental soil mechanics, applied soil mechanics and computational soil mechanics. As the foundation of the development of soil mechanics, experimental soil mechanics is not only a repetitive test based on sampling, fabrication, and simulation of influencing factors, but it must be closely integrated with theoretical soil mechanics. With the improvement of soil mechanics theory and geotechnical experiment technology, geotechnical triaxial test has become a commonly used method to measure soil mechanical parameters. When conducting soil tests, the unsaturated soil triaxial tester (GDS UNSAT) produced by the British GDS company is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
Inventor 路德春张佩杜修力潘志刚孔凡超王秋生
Owner BEIJING UNIV OF TECH
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