Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Soil grasper measuring device for measuring real displacement of soil sheared by large size soil engineering direct shear apparatus

A measuring device and earth grab technology, applied in the field of geotechnical engineering, can solve the problems affecting the accuracy of the test simulation mechanical process, the reliability of the test data collection, etc., and achieve the effect of filling the research gap

Active Publication Date: 2016-10-26
TONGJI UNIV
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The geotechnical direct shear test widely used at present generally considers that the displacement of the shear box is equal to the displacement of the soil in the shear box, and ignores the uneven displacement of the soil in the shear box. This basic assumption seriously affects the The accuracy of the mechanical process simulated by the test and the reliability of the data collected by the test, the research on this defect of the geotechnical direct shear test is still blank in the academic and engineering circles

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
  • Soil grasper measuring device for measuring real displacement of soil sheared by large size soil engineering direct shear apparatus
  • Soil grasper measuring device for measuring real displacement of soil sheared by large size soil engineering direct shear apparatus
  • Soil grasper measuring device for measuring real displacement of soil sheared by large size soil engineering direct shear apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as Figure 1-Figure 11 As shown, the present invention proposes a soil grab measuring device for measuring the real displacement of a large-scale geotechnical direct shear instrument shearing soil, consisting of a lower shear box base plate 1, a lower shear box system and a sensor system, wherein:

[0033] The lower shear box bottom plate 1 is used as the bearing platform for the lower shear box system and the entire sensor system. Both the lower shear box system and the sensor system are placed on the lower shear box bottom plate 1. The large-size geotechnical direct shear The horizontal load loading device of the instrument is directly connected;

[0034] The lower shear box system is composed of the lower shear box soil support bracket 2, the lower shear box side limit frame 3, and the high-strength spring group 4. The lower shear box soil support bracket 2 is directly fixed on the lower shear box bottom plate 1. The strength spring group 4 is distributed aroun...

Embodiment 2

[0041] Using the device described in Example 1, the working process of the three-grab soil direct shear test is as follows: put the test soil of the direct shear test into the lower shear box side limit frame 3 and the lower shear box soil support 2 In the upwardly open cuboid semi-open space formed, and carry out necessary tamping, make the test soil fill the lower shear box, the upper surface of the test soil is aligned with the upper edge of the lower shear box side limit frame 3, and the Insert three soil grabs 6 into the test soil, insert the vertical plate 11 of the soil grab vertically into the soil, place the horizontal plate 12 of the soil grab on the test soil horizontally, and then pass three sets of high-strength steel wires 7 through the matching steel wire diverter 8 and fixedly connected with three displacement sensors 5, and then tighten the high-strength steel wire 7, after the above work is completed, the upper shear box and its supporting test operation can b...

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 relates to a soil grasper measuring device for measuring the real displacement of soil sheared by a large size soil engineering direct shear apparatus. The device is composed of a low shearing box base plate, a lower shearing box soil-bearing support, a lower shearing box lateral limit frame, a high strength spring set, a soil grasper, a high strength steel wire, and a steel wire steering gear. The lower shearing box soil-bearing support is fixed on the low shearing box base plate; the high strength spring set is arranged on the periphery of the lower shearing box soil-bearing support; the lower shearing box lateral limit frame and the lower shearing box soil-bearing support are nested with each other to form a rectangular semi-opened space for containing tested soil; a steering gear support and a displacement sensor support are both fixed on the base plate; the steel wire steering gear is fixed on the upper end of the steering gear support, a displacement sensor is arranged on the upper end of the displacement sensor support; the high strength steel wire bypasses the steel wire steering gear, is connected to two ends of the displacement sensor, and is tensed to form an enclosed loop; and the soil grasper is welded to the high strength steel wire. The provided device can measure the real displacement of soil in a shearing box in the soil engineering direct shear tests, the shortage that a shear box is used to replace soil displacement is overcome, the measurement precision is improved, and the blank of soil engineering direct shear test research is filled.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering, and in particular relates to a soil grab measuring device for measuring the real displacement of soil sheared by a large-scale geotechnical direct shear instrument, which can realize accurate measurement of the real displacement of soil in a shear box in a geotechnical direct shear test . Background technique [0002] Direct shear test is an important test method for testing the shear strength of soil in geotechnical engineering. Geotechnical direct shear instrument is the test platform for direct shear test, and it is one of the most basic and important test instruments in the field of geotechnical engineering test. . The geotechnical direct shear test widely used at present generally considers that the displacement of the shear box is equal to the displacement of the soil in the shear box, and ignores the uneven displacement of the soil in the shear box. This basic assumption ...

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
IPC IPC(8): G01N3/24
CPCG01N3/24G01N2203/0025
Inventor 冯世进沈阳黄茂松
Owner TONGJI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com