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Drawing type soil layer shearing strength testing device and method for testing by using same

A shear strength and tester technology, which is applied in the direction of using a stable shear force to test the strength of materials, etc., to achieve the effects of simple installation, low cost and simple structure

Inactive Publication Date: 2014-03-12
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of existing test instruments for testing the shear strength of undisturbed soil layers, the present invention proposes a pull-out type soil layer shear strength tester and its testing method that can complete the shear strength test of cohesive or sandy soil layers on the spot

Method used

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  • Drawing type soil layer shearing strength testing device and method for testing by using same
  • Drawing type soil layer shearing strength testing device and method for testing by using same
  • Drawing type soil layer shearing strength testing device and method for testing by using same

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Embodiment Construction

[0020] see Figure 1A , Figure 1B with Figure 1C , in the present embodiment, the pull-type soil layer shear strength tester 11 is a frame structure, and there is a column 13 on the left and right sides of the bottom plate 12 fixedly arranged on the base 4, and the tops of the two columns 13 are connected by a beam 14 . There is a handwheel 15 on the crossbeam 14, and the vertical screw rod 16 passes through the guide hole in the middle of the crossbeam 14 through the handwheel 15, and is connected with the top of the measuring force ring 17 in the frame, and the bottom of the measuring force ring 17 is connected with a vertical connecting rod 18. The rod 18 runs through the circular hole in the middle of the bottom plate 12 and the base 4 , and the bottom end of the connecting rod 18 has a joint 19 connected with the pull rod 31 . The rear side of the base plate 12 is fixed with an organic box 22 , and a display, a temperature sensor 23 , and a cable fixing head 24 are ar...

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Abstract

The invention discloses a drawing type soil layer shearing strength testing device and a method for testing by using the same. The drawing type soil layer shearing strength testing device comprises a base, a drawing type soil layer shearing strength tester, a drawing rod and a displacement sensor and is characterized in that the base and the drawing type soil layer shearing strength tester are arranged on a test point of a soil layer, a connecting rod joint of the drawing type soil layer shearing strength tester is connected with the drawing rod placed in the soil layer, a hand wheel of the drawing type soil layer shearing strength tester is rotated to lift the drawing rod until the soil layer is sheared, and the shearing strength of the soil layer is tested. The drawing type soil layer shearing strength testing device and the method for testing by using the same are suitable for in-site test of total dewatering-free shearing strength of soil layers such as a foundation pit, a side slope and the like and rapidly making engineering evaluation on the soil layers.

Description

technical field [0001] The invention relates to an instrument and equipment for on-site testing of the shear strength of soil layers, in particular to a pull-out type soil layer shear strength tester and a testing method thereof. Background technique [0002] At present, the only instrument that can test the shear strength of the undisturbed soil layer on site is the cross-plate shear test geotechnical instrument. This instrument can only be used for the shear strength test of soft clay soil layer. For the shear strength index of cohesive or sandy soil layer, only the undisturbed soil sample or the disturbed soil sample can be cut, and the test can be done directly in the laboratory. Shear test or triaxial shear test can be obtained, so if it is required to make the shear strength index of cohesive or sandy soil layer on site, and quickly make an engineering evaluation of the soil layer, it cannot meet the demand. Contents of the invention [0003] Aiming at the deficienc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/24
Inventor 汪哲荪魏松
Owner HEFEI UNIV OF TECH
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