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An assembled laminated shear box

A prefabricated, shear box technology, applied in the direction of using a stable shear force to test the strength of materials, measuring devices, vibration tests, etc. Field deformation simulation and other problems, to achieve the effect of moderate cost, light weight and simple structure

Active Publication Date: 2019-11-19
JIAN YAN FOUND ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The laminated shear box has been widely used in shaking table tests at home and abroad. The laminated shear box is usually composed of multiple fixed metal laminates. Relative displacement can occur between the laminates. After the box is filled with soil, it can Approximately simulating the shear deformation of the soil under seismic load; however, the real shear deformation of the soil is a relatively smooth curve, and the relative displacement of the fixed stack is similar to a ladder, which cannot truly reflect the soil Shear deformation; this affects to some extent the simulation of free-field deformation and thus the test results

Method used

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  • An assembled laminated shear box
  • An assembled laminated shear box
  • An assembled laminated shear box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] see figure 1 , image 3 with Figure 4 As shown, an assembled laminated shear box includes two laminated frames 1 parallel to each other and two sheared frames 2 parallel to each other, and a truss is arranged on the outside of each laminated frame 1 5. The bottom of the truss 5 is connected to the top of the bottom plate 8 by screws; the side of the truss 5 close to the laminated frame 1 is provided with a number of limiting components 513; The frames 1 are in contact; the two ends of the shear frame 2 are rotatably connected to the end sides of the two laminated frames 1; the laminated frames 1 are composed of several first plates 11; each of the first The top surface of the plate 11 is equidistantly provided with two sliding assemblies 6; the sliding assembly 6 includes two parallel support seats 63 vertically connected to the upper surface of the first plate 11; the two support seats 63 A second rotating shaft 62 vertically connected therebetween is provided; the...

Embodiment 2

[0034] see Image 6 , Figure 8 with Figure 9 As mentioned above, as a technical optimization solution of the present invention, the difference from Embodiment 1 is that the limit assembly 513 includes a telescopic rod 5131 vertically connected to the bottom plate 8; the telescopic rod 5131 is composed of multiple connecting rod sleeves Each connecting rod is provided with a first cavity 5133 on the side close to the laminated frame 1; inside the first cavity 5133 is provided a ball 5132 in contact with the laminated frame 1; The inside of the first cavity 5133 is provided with several third cavities 5135 perpendicular to its inner wall; the inside of the third cavity 5135 is provided with a ball 5134 in contact with the ball 5132; the ball can be placed in the third cavity The body can rotate freely, the contact point between the ball and the ball can rotate freely, and the ball can rotate freely inside the first cavity; When the frame is in contact, the contact interval ...

Embodiment 3

[0037] see Figure 5As shown, as a technical optimization scheme of the present invention, the difference from Example 2 is that the number of layers of the shear frame 2 is equal to the number of layers of the laminated frame 1, and the shear frame 2 is composed of several parallel The second plate 21 is formed, and the two ends of the second plate 21 are respectively provided with a first rotating shaft 3 connected horizontally with it; the other end of the first rotating shaft 3 is rotationally connected with the bearing 4; the second plate When the soil in the box is deformed relative to the first plate, the second plate can rotate freely, thereby reducing the restraint of the deformation of the soil due to the rigidity of the box. And along with the deformation of the soil, the second plate rotates relative to the bearing through the first rotating shaft, so that the deformation of the soil can appear in a curved shape outside the box, increasing the accuracy of the exper...

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Abstract

The invention discloses a laminated shear box for simulating real soil deformation. The laminated shear box comprises two laminated frames parallel to each other and two shear frames parallel to eachother, an outer side of each laminated frame is provided with a truss, and a bottom part of the truss is connected onto a top part of a base plate via a screw; one side, positioned close to the laminated frame, of the truss is provided with a number of limiting assemblies; the truss is in contact with the laminated frame via the limiting assemblies; two ends of the shear frames are connected withside faces of end parts of the two laminated frames in a rotating manner; each laminated frame consists of a number of first plate members, a top surface of each first plate member is provided with two sliding assemblies that are arranged at an equal interval, each sliding assembly comprises two support seats that are parallel to each other and connected to upper surfaces of the first plate members vertically, a second rotating shaft is arranged between the two support seats in such a way that the second rotating shaft is connected thereto vertically, a rotating ball is arranged on the secondrotating shaft in a penetrated manner, a surface of the second rotating shaft is provided with a number of second cavities that are perpendicular thereto, and an internal part of each second cavity isprovided with steel balls in contact with an internal part of the rotating ball.

Description

technical field [0001] The invention belongs to the field of earthquake simulation shaking table tests of civil engineering, and relates to an assembled laminated shear box. Background technique [0002] The earthquake simulation shaking table can truly reproduce the earthquake action, and the seismic excitation is applied to the test object to investigate the response characteristics of the test object under the earthquake load excitation; The test is usually a model test scaled according to a certain similar relationship. [0003] For underground structures, the interaction between soil and structure is very important; therefore, in the model test of underground structures, a test device containing soil is usually set up according to the test requirements, and the soil and model structure are buried in the container, and the excitation is applied outside the container Then carry out the test. [0004] For the shaking table model test of the underground structure, the sei...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M7/04G01N3/24
CPCG01M7/04G01N3/24G01N2203/0025
Inventor 高文生刘金砺赵晓光倪克闯邱明兵秋仁东李晓勇郑经纬
Owner JIAN YAN FOUND ENG