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Testing device of visual display foundation vertical stress variation law under the action of concentrated force

A technique for intuitive display and stress change, applied in the field of soil mechanics teaching, to achieve the effect of simple structure and easy production

Inactive Publication Date: 2011-10-26
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] In the prior art, there is no test device that can visually display the variation law of the vertical stress of the foundation under the action of concentrated force

Method used

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  • Testing device of visual display foundation vertical stress variation law under the action of concentrated force
  • Testing device of visual display foundation vertical stress variation law under the action of concentrated force
  • Testing device of visual display foundation vertical stress variation law under the action of concentrated force

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Embodiment Construction

[0035] In conjunction with the accompanying drawings, the present invention will be further described in detail through a preferred embodiment: see attached image 3 , a test device for visually displaying the variation law of the vertical stress of the foundation under the action of concentrated force, comprising a U-shaped connecting pipe 1, a support 5, and an exhaust valve 6, characterized in that n said U-shaped connecting pipes (1) are equidistantly arranged in parallel Placed on the bracket 5, n is a natural number other than zero, and the connecting pipe between each adjacent U-shaped connecting pipe 1 is provided with a drain valve 2, and the lower part of each U-shaped connecting pipe 1 has a protruding The port is connected to one end of a transparent rubber tube 3, and the other end of the transparent rubber tube 3 is connected to a flat rubber water bag 4, and the end of the flat rubber water bag 4 is provided with the exhaust valve 6. The height 1 of the U-shaped...

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PUM

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Abstract

The invention relates to a testing device of visual display foundation vertical stress variation law under the action of concentrated force, comprising U-shaped communicating tubes, a bracket and a vent valve, wherein, n U-shaped communicating tubes are arranged and installed on the bracket in parallel at equal distance, and n is the natural number except zero; a drain valve is arranged on the communicating tube between adjacent U-shaped communicating tubes; the lower part of each U-shaped communicating tube is respectively provided with a bulged opening connected with one end of a transparent rubber hose, the other end of the transparent rubber hose is connected with a flat rubber water sac, and the end part of the flat rubber water sac is provided with the vent valve. The invention has simple structure and easy fabrication; the flat rubber water sacs embedded in different positions of foundation earth in a model box receives different pressures to ensure that the liquid level of theU-shaped communicating tube changes, thus visually displaying the foundation vertical stress variation law under the action of concentrated force.

Description

technical field [0001] The invention relates to a display device for foundation stress, in particular to visually displaying the law of variation of foundation vertical stress under the action of concentrated force, and belongs to the field of soil mechanics teaching. Background technique [0002] Basic solution of space problem——Boussinesq solution [0003] On the surface of the elastic body in semi-infinite space, a vertical concentrated force acts, such as figure 1 shown. [0004] In 1885, J.V.Boussinesq used the theory of elasticity to solve the problem of the state of additional stress in the foundation under the action of concentrated force. Among the six stress components of the Boussinesq solution, the most significant to the calculation of foundation settlement is the vertical stress σ z , its distribution law is naturally also the key point. [0005] σ z = 3 P 2 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B23/00G01L1/02
Inventor 邱成春张孟喜魏伟
Owner SHANGHAI UNIV