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Indoor model test device for simulating stress deformation of karst cave foundation pile and use method thereof

A force-deformed, indoor model technology, applied in the test of basic structure, basic structure engineering, construction, etc., can solve the problem of lack of systematic research, and achieve the effect of improving reliability, improving detection quantity, and improving adaptability

Pending Publication Date: 2021-08-10
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few research results on the load transfer law of pile foundations crossing karst caves, and there is still a lack of systematic research

Method used

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  • Indoor model test device for simulating stress deformation of karst cave foundation pile and use method thereof
  • Indoor model test device for simulating stress deformation of karst cave foundation pile and use method thereof
  • Indoor model test device for simulating stress deformation of karst cave foundation pile and use method thereof

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Experimental program
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Embodiment 1

[0041] Such as Figure 1-Figure 6 As shown, the indoor model test device for simulating the force deformation of the cave foundation pile includes a box mechanism 1 for forming molds, a loading mechanism 2 for providing longitudinal pressure, and a measuring mechanism 3 for fixing measuring equipment. The upper end of the mechanism 1 is connected to the loading mechanism 2, and the measuring mechanism 3 is arranged on both sides of the box mechanism 1;

[0042] The box mechanism 1 includes a side frame 11, a bottom plate 12, a simulated karst cave 13, and a simulated pile 14. Two side frames 11 are arranged on the upper end of the bottom plate 12, and a simulated karst cave 13 is formed between the side frame 11 and the bottom plate 12. The simulated karst cave 13 is penetrated with a simulated pile 14;

[0043]The loading mechanism 2 includes a column 21, a reaction beam 22, a jack 23, and a moving seat 24. The two ends of the reaction beam 22 are connected with a column 21,...

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Abstract

The invention discloses an indoor model test device for simulating stress deformation of a karst cave foundation pile and a use method thereof. The indoor model test device comprises a box body mechanism used for forming a mold, a loading mechanism used for providing longitudinal pressure and measuring mechanisms used for fixing measuring equipment, the upper end of the box body mechanism is connected with the loading mechanism, and the measuring mechanisms are arranged on the two sides of the box body mechanism. According to the indoor model test device for simulating the stress deformation of the karst cave foundation pile and the use method thereof, the structure of the loading mechanism, which is convenient to move, is utilized, so that the pressure applying position and the pressure applying height of a jack are conveniently adjusted, the adaptability of the device is improved, and the detection quantity of data is improved by utilizing multi-point and multi-azimuth detection of the measuring mechanisms, so that the credibility of the data and the accuracy of the test are improved.

Description

technical field [0001] The invention relates to the field of pile foundation force tests, in particular to an indoor model test device for simulating force deformation of karst cave foundation piles and a use method thereof. Background technique [0002] In the process of pile foundation construction in karst areas, when the weathered roof of the cave is severely weathered or the thickness is small, drilled rock-socketed piles are often used to cross the cave, and the pile ends are embedded in the stable rock mass at the bottom of the cave. However, in areas with strong karst development, there are often multiple karst caves at the pile site, which develop in a beaded shape. A rock-socketed pile must pass through one or more layers of karst caves, and its bearing properties and failure modes are better than those of rock-socketed piles in ordinary rock foundations. more complicated. At present, there are few research results on the law of load transfer of pile foundations c...

Claims

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Application Information

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IPC IPC(8): E02D33/00E02D27/12
CPCE02D33/00E02D27/12
Inventor 李鹏甲雷勇谭豪陈于斯
Owner HUNAN UNIV OF SCI & TECH
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