Device for simulating centrifugal field slope excavating condition

A technology of centrifugal field and slope, which is applied in excavation, foundation structure engineering, foundation structure test, etc., can solve the problems of time-consuming and labor-consuming, and can not be simulated realistically, and achieves wide applicability, convenient control, and simple equipment structure Effect

Active Publication Date: 2010-12-08
TSINGHUA UNIV
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Problems solved by technology

The first type of method artificially ignores the influence of the stress path of the centrifuge, and cannot truly simulate the stress field of the actual slope and the changes caused by the excavation; the method of discharging liquid with a density similar to that of the soil is time-consuming and labor-intensive. There are many requirements for sample preparation; precision excavation machinery often needs to be combined with a sophisticated and perfect centrifuge platform system, which is subject to different degrees of restrictions. slope excavation equipment

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  • Device for simulating centrifugal field slope excavating condition
  • Device for simulating centrifugal field slope excavating condition
  • Device for simulating centrifugal field slope excavating condition

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Embodiment Construction

[0028] The present invention provides a device for simulating the excavation condition of a centrifugal field slope, and the present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0029] The working principle of the excavation equipment is to use the blade to cut the soil to be excavated from the slope and push it away, which can be simplified into two processes: the process of the blade cutting into the soil at the slope from top to bottom (down cutting) and rightward movement to push the cut soil away from the slope (push-pull). In addition, the control system is composed of travel switches, slip rings and controllers to control the excavation equipment in real time.

[0030] Such as figure 1 and figure 2 As shown, the equipment mainly includes platform part, undercutting system and push-pull system.

[0031] The structure of the platform part is: the bottom platform board 1 placed horizontal...

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Abstract

The invention belongs to a construction site simulating device, in particular to a device for simulating a centrifugal field slope excavating condition. After a pulling motor is electrified, a motor gear rotates forwardly and reversely so as to drive an upper plate on right end of a rack to slide left and right on a linear guide rail and drive a blade to move left and right, namely, efficiently simulate the process of 'pulling and pushing'. A motor shaft of the linear motor drives a lower blade to move up and down along the vertical direction, so as to realize the process of 'downwards cutting-upwards lifting' by vertically inserting the blade and removing the slope foot according to the requirement. The invention has high reliability, low cost, wide application, simple device structure and convenient modification. Device and model boxes are separated from each other, so the narrow inner idle size of the model boxes after being sampled is not limited any more. The control is convenient. By connecting a sliding ring to a control chamber and combining with an image sampling and displacement measuring system, the side slope can be excavated for several times at real time.

Description

technical field [0001] The invention belongs to construction site simulation equipment, in particular to a device for simulating excavation conditions of centrifugal field slopes applied to slope geotechnical centrifuge model tests. Background technique [0002] Slope excavation is a problem often encountered in engineering. Unreasonable excavation design and construction will have an important impact on the safety of the project. Centrifugal model test has been widely used in slope stability and failure mechanism due to its advantages of keeping the stress of the model and the prototype the same. [1] . At present, there are mainly two methods for simulating excavation in the centrifugal model test: one is to dig out the soil to be excavated in advance during sample preparation, and then increase the centrifugal acceleration to study the response of the soil or retaining structure under the condition of increased stress [2] ; The second is to simulate excavation by discha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D33/00E02D17/00E02D17/20
Inventor 张嘎李明张建民
Owner TSINGHUA UNIV
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