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A visual test device and method for model pile calculation width

A test method and model pile technology, applied in the field of visual test device for model pile calculation width, can solve problems such as difficult quantitative research on model pile calculation width, difficult model pile visualization test, etc., and achieve simple layout, simple disassembly and assembly , Easy installation and fixed effect

Inactive Publication Date: 2021-05-14
SICHUAN UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that it is difficult to carry out model pile visualization test based on the similarity principle, and it is difficult to quantitatively study the soil stress diffusion around the model pile and the calculation width of the model pile, and to provide a visual test device and method for the calculation width of the model pile

Method used

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  • A visual test device and method for model pile calculation width
  • A visual test device and method for model pile calculation width
  • A visual test device and method for model pile calculation width

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0045]Such asFigure 1 to 8 As shown, the structure of the visualization test device for calculating the width of the model pile, including:

[0046]Visualization model box 1, the top opening, the inner filling is a model soil 4 configured in a similar principle 4; the mini scaffold is composed of a steel rod 7, the bolt 9, and the fastener 8 for lap the test equipment; the loading device 3 is connected On the hydraulic servo system, the model pile 5 is exposed to a portion of the horizontal load; the surface of the model soil is in the center, 0 °, 15 °, 30 °, 38 °, 45 ° and 52 ° symmetrical arrangement with a displacement point 6, press 0.75 times the pile width pitch arrangement three rows; the upper rack of the model soil 4 has a high-speed particle camera 2, which adjusts it to clearly capture all of the displacement points 6.

[0047]The model box 1 in this embodiment is 180 cm × 110cm × 150 cm × 110cm × 150 cm (length × height), and the skeleton is welded by the steel frame, and the...

Embodiment 2

[0058]The method of calculating the width of the model pseudo-calculation of the model pile of Example 1, including the following steps:

[0059](1) Preparing test materials and equipment

[0060]The physical mechanics parameters of prototyping soil and prototype pile are measured according to similar principles, the model soil 4 and model pile 5 are made according to the model pile 5 size and boundary effect to determine the model box 1 size, prepare the displacement point 6, and the steel rod 7, fasteners 8 and bolts 9, high speed particle cameras 2, load device 3 and a computer.

[0061](2) Construction model pile side slope model

[0062]The configured model soil 4 is compacted in the model box 1. After filling a certain height, the model pile is buried in a predetermined position, the whole platform, and continues to be stratified to fill the model soil 4 until it reaches The stake body is predetermined to expose the height and the top of the soil surface.

[0063](3) fixed adjustment monitor...

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Abstract

The invention provides a model pile calculation width visualization test device and method. The device is mainly composed of model boxes, model soil, model piles, high-speed particle cameras, bolts, fasteners, steel rods and displacement punctuation points. The model box is a transparent box composed of steel structure and acrylic. The model soil and prototype The soil has similar physical and mechanical indicators, and is arranged in the model box with the model piles. The displacement punctuation points are arranged on the surface of the model soil at a certain angle. The bolts and fasteners cooperate with the steel rods to form a mini-scaffold for erecting testing equipment , the high-speed particle camera is erected directly above the model soil. Compared with the existing test device and test method, the present invention is more convenient and flexible to overlap, and can quantitatively analyze the soil stress diffusion according to the similarity principle, and calculate the calculated width of the pile body, which can be It is widely used in the study of pile-soil interaction under different site slopes, soil properties or pile geometry.

Description

Technical field[0001]The present invention belongs to the field of geotechnical engineering and geological engineering, involving a model test device and a test method, and specifically, a visualization test apparatus and test method for calculating width of model piles.Background technique[0002]In our country, the engineering geological conditions are very complicated, and different site conditions have made different requirements for the basis of its structures. Especially in the southwest of my country, the slope site is about 90% of the land area, in the construction of roads, railways, buildings, electricity, water conservancy and other projects, often need to be placed on top of the slope or sloped field. Due to the reason such as site terrain, the slope site pile foundation has occurred due to the lack of lack of capacity, and its horizontal bearing capacity design indicators, such as calculating the width should be targeted.[0003]Due to the presence of the surface of the pil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/00E02D33/00
CPCE02D33/00
Inventor 康舜刘长武袁勋
Owner SICHUAN UNIV