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Three-dimensional controllable dynamic compaction simulated centrifuge testing mechanical arm device

A centrifuge and manipulator technology, which is applied in the direction of applying repetitive force/pulse force to test the strength of materials, and can solve the problems affecting the reliability of water and soil pressure load tests and different stress levels.

Inactive Publication Date: 2015-07-01
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Scholars at home and abroad have done a lot of research on the dynamic compaction method, but the practice of the dynamic compaction method is still far ahead of the theory
At present, scholars at home and abroad often use scaled-scale indoor model tests to discuss the mechanism of dynamic compaction, but the stress level of the scaled-down model under 1g is different from that of the on-site prototype, and cannot truly reproduce the stress level on site, which directly affects water and soil. Test reliability of pressure load

Method used

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  • Three-dimensional controllable dynamic compaction simulated centrifuge testing mechanical arm device

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Embodiment 1

[0024] Such as Figure 1-Figure 7 As shown, the device consists of a base 1, a transparent glass observation window 2, a steel frame 3, a first rail 4, a first moving track 5, a slider 6, a bracket 7, a reinforcing bracket 8, a first motor 9, and a motor fixing plate 10. Transmission shaft 11 is fixed bolt 12, second track 13, second moving track 14, work platform 15, second motor 16, third motor 17, gearbox 18, displacement rod 19, electromagnetic relay 20, iron miniature rammer Hammer 21 and slide bar 22 form. Among them, the base 1 can be made of ordinary concrete blocks, and it is used as a platform for temporary storage when making soil samples in the model box. The base 1 needs to be level. The tamping manipulator is hoisted to the centrifuge basket for installation and fixation. The external dimensions of the model box are 900mm×700mm×700mm. In order to reduce deformation under high stress, the steel frame 3 is made of high carbon steel, and the glass used for the tra...

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Abstract

The invention belongs to the technical field of geotechnical centrifuges and in particular relates to a three-dimensional controllable dynamic compaction simulated centrifuge testing mechanical arm device. The three-dimensional controllable dynamic compaction simulated centrifuge testing mechanical arm device is composed of a base, a model box, a three-dimensional displacement system and an automatic hammer dropping system, wherein a dynamic compaction mechanical arm can realize manual controllable three-freedom-degree movement in horizontal-longitudinal, horizontal-transverse and vertical directions, and can realize simulation actions such as free falling of a miniature rammer, hoisting ramming repeatedly and ramming at different points and the like based on a three-directional movement module and an electromagnetic relay system; by combining a centrifuge device, an imaging system and a sensor system, provided by a centrifugation laboratory room, the three-dimensional controllable dynamic compaction simulated centrifuge testing mechanical arm device can be used for simulating the dynamic compaction construction method, disclosing the mechanism of the dynamic compaction method and optimizing the construction scheme.

Description

technical field [0001] The invention belongs to the technical field of rock-soil centrifuges, and in particular relates to a centrifuge test manipulator device which can be manipulated in three dimensions to simulate dynamic compaction. Background technique [0002] The dynamic compaction method, also known as the dynamic consolidation method or the dynamic compaction method, is an effective foundation treatment scheme. This method is to repeatedly lift the weight to a high place and then use the automatic decoupling device to make it fall freely, giving the foundation a solid foundation. Ramping with powerful impact energy can improve the strength of foundation soil, reduce compressibility, eliminate collapsibility, improve anti-vibration liquefaction ability, improve uniformity of soil layer, and reduce uneven settlement. The dynamic compaction method has been widely used in engineering practice. Scholars at home and abroad have done a lot of research on the dynamic compa...

Claims

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Application Information

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IPC IPC(8): G01N3/34
Inventor 冯世进杜风雷毛健智
Owner TONGJI UNIV
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