Testing apparatus and method for simulating liquefied particle motion characteristics

A particle movement and test device technology, applied in the field of geotechnical earthquake engineering, can solve the problems of poor stability, high cost, low precision, etc., to avoid boundary effects and local effects, and improve test efficiency.

Active Publication Date: 2012-10-17
HOHAI UNIV
View PDF9 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The object of the present invention is to overcome the above-mentioned defects such as high cost, poor stability, short time and low precision of the above-mentioned traditional experimental equipment for simulating the state after liquefaction

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
  • Testing apparatus and method for simulating liquefied particle motion characteristics
  • Testing apparatus and method for simulating liquefied particle motion characteristics
  • Testing apparatus and method for simulating liquefied particle motion characteristics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] Such as figure 1 , figure 2 and image 3 As shown, a test device for simulating the movement characteristics of particles after liquefaction, including a model box (1) a workbench (2) a bolt (3) a base (4) a connecting block (5) a forward and reverse motor (6) a shaft (7 ) fixed pulley (8) water injection hole (9) permeable plate (10) permeable material (11) steel wire rope (12) solid cylinder (13) track (14) tension sensor (15) plastic sand (16) model box sealing cover ( 17) Vacuum hole (18) and PIV optical test platform.

[0056] The model box (1) is made of a transparent plexiglass panel, and a sealing ring is wrapped around the model box sealing cover (17), and a vacuum hole (18) is opened in the middle of the model box sealing cover (17), and the model box (1 ) is provided with a water injection hole (9) on one side of the bottom, and the cover of the water injection hole (9) is also designed to be sealed, and a piece of plexiglass panel is set at a certain dis...

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

PropertyMeasurementUnit
densityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a testing apparatus and a testing method for simulating liquefied particle motion characteristics. The apparatus comprises: a model box, a model box sealing cap, a workbench, and a PIV optical testing platform. The model box is prepared from a transparent plexiglass material. A water injection hole is arranged on the side of the model box. A vacuum pumping hole is arranged on the sealing cap. Two rails are arranged inside the model box. A fixed pulley assembly and a forward and reverse motor are connected outside the model box. The testing method comprises that: liquefied sands are simulated by using suspending plastic sands in a sodium chloride solution with a certain density; a steel wire is drawn by the motor, such that a solid cylinder moves horizontally on the rails; the motion states of the plastic sands around the cylinder during the movement is measured by using the PIV optical testing platform; and the horizontal tensile force on the cylinder during the movement is measured by using a tension sensor. The apparatus and the method provided by the invention are advantaged in high precision, simple operation, stable state after liquefaction simulation, and the like.

Description

technical field [0001] The invention belongs to the technical field of geotechnical earthquake engineering, in particular to a test device and method for simulating the movement characteristics of particles after liquefaction. [0002] Background technique [0003] Earthquake is one of the major disasters faced by human beings. Saturated sandy soil will liquefy under the action of earthquake, which will cause the damage of rock and soil structures. Caused by weakening of cohesive soil. In recent years, there have been frequent earthquakes around the world, especially in the "5.12" Wenchuan Earthquake in China in 2008 and the "3.11" Earthquake in Japan in 2011, both of which caused earthquake damage due to sand liquefaction. [0004] The total stress of saturated sand is composed of effective stress and pore water pressure. In general, the load of the foundation is mainly borne by the effective stress in the total stress. However, when an earthquake occurs, the pore water 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 Applications(China)
IPC IPC(8): G01N15/00
Inventor 周葛陈育民刘汉龙丁选明
Owner HOHAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap