Unlock instant, AI-driven research and patent intelligence for your innovation.

Model test equipment for unsaturated earth pile base

A technology of test device and base model, which is applied in the test of basic structure, basic structure engineering, and testing the strength of materials by applying stable tension/pressure, which can solve the problem of unable to change and control the suction of soil sample matrix.

Inactive Publication Date: 2006-10-04
WUHAN MUNICIPAL ENG DESIGN & RES INST
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is: in order to solve the problem that the current unsaturated soil pile foundation model test device can not change and control the matrix suction of the soil sample well in the test process, the invention provides a kind of unsaturated soil pile foundation model test device , it is convenient to change and control the matrix suction of the soil sample during the test according to the needs of the test, and measure the bearing performance of the model pile foundation under the corresponding matrix suction

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Model test equipment for unsaturated earth pile base
  • Model test equipment for unsaturated earth pile base
  • Model test equipment for unsaturated earth pile base

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. figure 1 It is an unsaturated soil pile foundation model device using a cylindrical pressure vessel in the present invention. Before the test, the soil sample 17 used is properly treated and the necessary soil parameters are measured. In particular, it is necessary to obtain the soil- Water characteristic curve, so that the matric suction of soil sample 17 can be accurately controlled by controlling the air pressure according to the soil-water characteristic curve of soil sample 17 during the unsaturated pile foundation test.

[0013] When carrying out the test, first connect the air bubble device 24 on the base 21 with the helical groove side hole 30 passing through the helical groove 28, and connect the hole pressure measuring device 25 with the helical groove central hole 26 passing through the helical groove 28. Connected, then the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a kind of tester of unsaturated earth pile model. It is composed of pressure vessels whose upper cover and base can be taken down. There is a piston rob and piston cover used for transmission and a valve used for infliction and exhaust on the upper cover. An indentation is machined in the middle of the base and it is suited to the pottery with high admission value. Different potteries with high admission value are fixed in the indentation according to the requirements. Volute trough is machined on the bottom of the indentation to discharge the air bubble. So we can control the matric suction of soil samples on trial easily and realize the load-carrying properties of unsaturated earth pile model.

Description

technical field [0001] The invention relates to a pile foundation model test device for indoor measurement of pile foundation bearing capacity in soil mechanics and foundation engineering. Background technique [0002] At present, domestic and foreign pile foundation test models are generally composed of model piles, axial or horizontal force measuring devices, axial or horizontal displacement measuring devices, model grooves, soil samples, etc. If there are special requirements, a stress test device is also installed on the model pile to measure the internal stress of the pile, or an earth pressure cell is embedded in the soil of the model groove to measure the stress distribution and stress in the soil. size. When conducting model pile tests, the density and water content of the soil are generally controlled according to predetermined values ​​before the test. If the water content of the soil sample is to be changed during the test, the only way to i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E02D33/00G01N3/10
Inventor 郭爱国孔令伟
Owner WUHAN MUNICIPAL ENG DESIGN & RES INST