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Multifunctional stimulating device for soil vibrating and liquefying as well as pile foundation liquefying resisting functions

A technology of vibration liquefaction and simulation device, which is applied in basic structure engineering, basic structure test, construction, etc. It can solve the problems of not considering the water content of the soil and the anti-soil liquefaction effect, so as to achieve intuitive display and reduce the number of experiments. cost, the effect of improving the presentation effect

Pending Publication Date: 2018-11-13
YELLOW RIVER CONSERVANCY TECHN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The existing demonstration technology of soil vibration liquefaction does not consider the influence of soil water content, and can only demonstrate the liquefaction of saturated soil. Therefore, a simulation device for soil vibration liquefaction and pile foundation anti-liquefaction effect with simple results, easy operation and different demonstration functions is needed, so as to have a deep understanding of soil liquefaction mechanism and treatment methods

Method used

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  • Multifunctional stimulating device for soil vibrating and liquefying as well as pile foundation liquefying resisting functions
  • Multifunctional stimulating device for soil vibrating and liquefying as well as pile foundation liquefying resisting functions
  • Multifunctional stimulating device for soil vibrating and liquefying as well as pile foundation liquefying resisting functions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0032] When simulating the liquefaction of soils with different saturations under different vibration loads, the steps are as follows:

[0033] a. Start the pile foundation telescopic controller 206, shorten the pile length of the scalable pile foundation 201 to the minimum value, adjust the inclination angle of the pile foundation tilt display device 203 to 0 ° (angle with the vertical direction);

[0034] b. The liquid level of the pore water 402 in the movable water tank 401 is placed at a position lower than the water-containing sand 202, and the drain valve 403(a) is opened, and the water in the water-containing sand 202 flows in through the water outlet filter device 407 and the water outlet pipe 404 In the movable water tank 401, the saturation of the water-containing sand 202 decreases, and when the water body no longer flows out, close the drain valve 403(a);

[0035] c. Input the required vibration load type in the vibration controller 308, start the corresponding vi...

Embodiment approach 2

[0039] When simulating the anti-soil liquefaction effect of pile foundations with different pile lengths during soil liquefaction, the steps are as follows:

[0040] a. Start the pile foundation telescopic controller 206, shorten the pile length of the scalable pile foundation 201 to the minimum value, adjust the inclination angle of the pile foundation tilt display device 203 to 0 ° (angle with the vertical direction);

[0041] b. Raise the movable water tank 401 so that the liquid level of the pore water 402 exceeds the height of the water-containing sand 202, open the drain valve 403 (b), and the pore water 402 flows into the water-containing sand 202 through the water inlet pipe 404 and the water inlet filter device 408 , the soil saturation increases, and when the liquid level of the water-containing sand 202 rises to a predetermined position (the liquid level position when the sand is saturated), close the drain valve 403 (b) and stop the water intake;

[0042] c. Input ...

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Abstract

The invention discloses a multifunctional stimulating device for soil vibrating and liquefying as well as pile foundation liquefying resisting functions. The stimulating device comprises a sand box stimulating device part, a telescopic pile foundation stimulating and controlling device part, different vibrating load loading device parts and a movable type pore water increasing-reducing device part. The movable type pore water increasing device controls saturation degree of water-containing sandy soil in the sand box through a water adding or reducing way, different vibrating load loading devices can apply different types of vibrating load, and vibrating and liquefying phenomena under different saturation degrees and different vibrating load of the water-containing sandy soil can be observed. The length of a variable pile foundation buried in the water-containing sandy soil is controlled, so that a tilting condition of a short pile foundation while the saturated soil is liquefied, and action, in resisting soil liquefying, of the long pile foundation can be observed. The device has the advantages of being multifunctional, easy to operate, repeatable, and visual in display, and is suitable for displaying the soil vibrating and liquefying as well as pile foundation liquefying resisting functions in the civil engineering field.

Description

technical field [0001] The invention relates to a multifunctional soil vibration liquefaction and pile foundation anti-liquefaction function simulation device, which is particularly suitable for intuitively displaying the phenomena of soil vibration liquefaction and pile foundation anti-liquefaction functions in the field of civil engineering. Background technique [0002] The total stress in the soil includes the effective stress and pore stress of the soil. The intergranular stress transmitted by the contact between soil particles is the effective stress of the soil, which is the stress in the soil that controls the volume deformation and strength change of the soil; the pore transmission in the soil The stress is called pore stress, or pore pressure, including pore water pressure and pore gas pressure. For saturated soils, the pores are filled with pore water and only pore water pressure exists. That is, the total stress σ at any point in the saturated soil is equal to t...

Claims

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Application Information

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IPC IPC(8): E02D33/00
CPCE02D33/00
Inventor 田玲苏巧荣杨志刚雷艳丽王腊梅孙其龙王玉珏邢琳琳齐善忠靳玉娟吕新娓孟宪金
Owner YELLOW RIVER CONSERVANCY TECHN INST
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