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A Dynamic Friction Experimental System of Rock Mass Structural Surface Based on Shaking Table

An experimental system and dynamic friction technology, applied in the direction of instruments, measuring devices, mechanical devices, etc., can solve problems that are difficult to meet the engineering stress environment, and achieve real-time acquisition, good controllability, and easy operation.

Active Publication Date: 2019-09-27
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this kind of experimental equipment is still difficult to meet the real stress environment in engineering.

Method used

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  • A Dynamic Friction Experimental System of Rock Mass Structural Surface Based on Shaking Table
  • A Dynamic Friction Experimental System of Rock Mass Structural Surface Based on Shaking Table

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Experimental program
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Embodiment Construction

[0036] In order to enable those skilled in the art to better understand the technical solution of the present application, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0037] The orientation terms such as up, down, left, right, front and rear in this application document are established based on the positional relationship shown in the drawings. If the drawings are different, the corresponding positional relationship may also change accordingly, so this should not be understood as limiting the scope of protection.

[0038] In the descriptions in the application documents, "plurality" means two or more, unless otherwise specifically defined.

[0039] In this application document, terms such as "installation", "connection", "connection", "connection" and "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral ground connection, or mech...

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Abstract

The invention relates to a dynamical friction experimental system for a rock discontinuity structural plane based on a vibrating table. A lower test block fixing seat (9) is fixed on a vibrating table (1); the bottom surface of a lower test block (21) is clamped in a groove body of the lower test block fixing seat (9); the side face of the lower test block (21) is connected with a tension-compression sensor (8); an upper test block (22) is stacked on the lower test block (21); a vertical loading device (4) is arranged at the upper end of the upper test block (22); a steel frame (5) is arranged by being independent of the vibrating table (1) and comprises a frame body and a sensor fixing frame arranged on one side of the frame body; the upper test block (22) is fixed in the frame body; a dynamic displacement transducer (7) is arranged on the sensor fixing frame; the output end of the sensor is connected with an acquiring device through a circuit; and the acquiring device is connected with a fitter through a circuit. According to the dynamical friction experimental system disclosed by the invention, a dynamical friction experiment of the structural plane can be simply and conveniently carried out at different vibration amplitudes and different accelerations, and the relationship between a frictional coefficient of the structural plane and the acceleration and relative displacement is obtained.

Description

technical field [0001] The invention relates to the field of structural surface friction test equipment, in particular to a rock mass structural surface dynamic friction experimental system based on a shaking table. Background technique [0002] Traditional structural surface friction test equipment is mostly static (quasi-static) friction test equipment, and the data obtained through these static (quasi-static) friction test equipment often do not conform to the actual situation in the project. This is because the rock mass is usually a block structure with joints and fissures under the action of long-term high geostress. When the dynamic impulse acts on the rock block system, due to the vibration of the rock mass, the relative compaction degree between the rocks will change with time. At some point, when the rock blocks are relatively loose, the friction force and friction coefficient between the rock blocks will be greatly reduced, or even reduced to zero, that is, an ul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N19/02
Inventor 刘耀儒陶灼夫杨强王守光
Owner TSINGHUA UNIV
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