Device and method for testing deep horizontal displacement of foundation pit enclosure structure in model test
A technology of foundation pit enclosure and horizontal displacement, which is applied in measuring devices, mechanical measuring devices, soil material testing, etc., can solve the problem of difficulty in accurately measuring the horizontal displacement of the deep layers of the enclosure structure.
Pending Publication Date: 2019-04-19
EAST CHINA JIAOTONG UNIVERSITY
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Problems solved by technology
However, most scholars often worry about the difficulty of reasonably and accurately measuring the deep horizontal displacement of the enclosure structure in the process of carrying out model tests.
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Embodiment Construction
[0022] Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements.
[0023] Please refer to Figure 1-4 , the deep horizontal displacement test device for the model test foundation pit enclosure structure includes a model box 1, the model box is a box structure with a size of 2200mm*1000mm*1500mm, the box frame adopts square steel, the top of the box is open, and the front and rear two The sides are equipped with transparent plastic plates, and the left and right sides are equipped with steel plates. Sand soil 2 is filled in the model box 1 . Two rows of model piles 3 are fixed in the sand 2, the top of the model pile 3 is basically flush with the sand 2, the bottom of the model pile 3 is 200mm away from the bottom of the model box 1, and the distance between the two rows of model piles 3 is 530mm , the distance between the model pile 3 on the left and the model box 1 is 1050mm, and the ...
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The invention discloses a device for testing deep horizontal displacement of a foundation pit enclosure structure in a model test, which comprises a model box with an open top, wherein sand is filledin the model box, a circle of model piles are fixed in the sand, two opposite sides of the model pile are respectively and fixedly connected with transversely arranged steel rods which are distributedat equal intervals in the depth direction, the periphery of each steel rod is movably sleeved with a hollow glass pipe, the inner end of the hollow glass pipe is freely arranged near the model piles,the outer end of the hollow glass pipe penetrates through and extends out of the model box, the hollow glass pipe is fixed at the penetrated position of the model box, and the outer end of each steelrod freely extends out of the model box along the hollow glass pipe and is connected to a displacement measuring device. The invention discloses a method for testing deep horizontal displacement of the foundation pit enclosure structure in the model test. The method can reasonably and accurately measure the deep horizontal displacement of the enclosure structure.
Description
technical field [0001] The invention relates to the technical field of foundation pit enclosure construction, in particular to a deep horizontal displacement testing device and testing method for a foundation pit enclosure structure for model tests. Background technique [0002] In recent years, with the rapid development of domestic subway and other infrastructure construction, row piles are one of the important forms of foundation pit enclosure structure, and the research on their bearing and deformation characteristics has always been a hot topic in the field of geotechnical engineering. Due to the poor economy of field tests and the unrepeatability of test results, most scholars carry out related research through theoretical analysis, model experiments and numerical analysis. However, most scholars are often troubled by the difficulty of reasonably and accurately measuring the deep horizontal displacement of the enclosure structure in the process of carrying out model te...
Claims
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Login to View More IPC IPC(8): G01N33/24G01B5/02
CPCG01B5/02G01N33/24
Inventor 方焘张婷刘春
Owner EAST CHINA JIAOTONG UNIVERSITY