Auxiliary prefabrication device for a structural plane sample in indoor shear test and use method thereof
A technology of internal shear and control device, which is used in the preparation of test samples, the use of stable shear force to test the strength of materials, and the measurement device. problems such as the level of the surface and the influence of the shear strength parameters of the structural surface to achieve the effects of novel design, high reliability and strong practicability
Inactive Publication Date: 2019-11-22
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI +1
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However, this method also has the biggest technical problem, that is, it is difficult to control the horizontality between the neutral plane of the structural surface and the shear direction when preparing poured samples on the structural surface, and this parameter has a significant impact on the shear strength parameters of the structural surface
In addition, the concrete pouring sample needs to match the size of the shear box. Usually, the method of pouring a large-sized sample and cutting it into shape is not used. The secondary disturbance will easily cause damage to the interface between the structural surface and the concrete and the original structural surface, directly affecting the pouring test. sample quality
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[0023] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0024] 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 orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood ...
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The invention relates to the technical field of rock mass engineering equipment, and discloses an auxiliary prefabrication device for a structural plane sample in an indoor shear test. The auxiliary prefabrication device comprises a vertical direction control device, a left and right dovetail pushing device, a container and a contact disc. The invention also discloses a use method of the auxiliaryprefabrication device. The method is characterized by adjusting a horizontal position A of the vertical direction control device on an upper horizontal guide rail through a second parbuckle screw; adjusting the tightness of the vertical guide rail through a first parbuckle screw and furthermore, adjusting the upper and lower position B of the contact disc connected with the vertical guide rail; controlling the tightness of two dovetail pushing blocks through a fourth parbuckle screw to control the position C of the left and right dovetail pushing device in the container; and obtaining a finalsample ideal position according to the positions A, B and C. The device can prepare a shear sample containing a structural plane in one molding, and can control the level degree of the structural plane neutral plane and the shear direction, thereby increasing structural plane shear strength parameter measurement precision.
Description
technical field [0001] The invention relates to the technical field of rock mass engineering equipment, in particular to an auxiliary prefabrication device for structural surface samples in indoor shear tests and a method for using the same. Background technique [0002] The structural plane shear strength index is a very important mechanical parameter in rock mass engineering, and is usually obtained through in-situ shear tests and indoor structural plane shear tests. For the indoor shear test of the original structure, because the sample obtained by the on-site sampling method (such as drilling core, in-situ cutting, etc.) is controlled and affected by the natural occurrence or development direction of the structural plane, the obtained structural Face core and block test blocks usually cannot meet the requirements of indoor shear samples. Most of the shear boxes for indoor shear samples are cuboids of a specific size, which prevents cylindrical cores or rock samples with...
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Login to View More IPC IPC(8): G01N1/36G01N3/24G01N3/02
CPCG01N1/36G01N3/02G01N3/24G01N2001/366G01N2203/0025G01N2203/0298
Inventor 邱士利闫思泉刘继光贾超张晨曦杨艳霜
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI