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Device for simulating shearing friction of pipe joint of jacking pipe and rocky surrounding rock and testing method

A pipe joint and rock technology, applied in the field of pipe jacking construction, can solve problems such as sharp increase in friction and pipe jams

Active Publication Date: 2018-12-11
重庆大学建筑规划设计研究总院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, in order to solve the problem of pipe jacking friction characteristics between pipe jacking and surrounding rock under complex contact conditions, the present invention solves the problem that the sharp increase in friction between pipe joints and surrounding rock in micro-shield pipe jacking in complex mountainous areas will eventually cause pipe jamming. To study urgent problems and provide a device and test method for simulating the shear friction between pipe jacking pipe joints and surrounding rock

Method used

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  • Device for simulating shearing friction of pipe joint of jacking pipe and rocky surrounding rock and testing method
  • Device for simulating shearing friction of pipe joint of jacking pipe and rocky surrounding rock and testing method

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Embodiment Construction

[0024] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0025] The reference signs in the accompanying drawings of the specification include:

[0026] Diamond jack 1, first reaction wall 2, second reaction wall 3, support rod 4, rigid block 5, ball base 6, selfie stick button 7, selfie stick 8, mobile phone 9, fixed pole 10, trigger terminal 11 , rock base 12, concrete test piece 13, push plate 14, computer 15, first wire 16, second wire 17, hydraulic jack 18, pressure sensor 19.

[0027] Such as figure 1 A device for simulating the shear friction between the pipe jacking pipe joint and the rock surrounding rock is shown, including a cuboid rigid block 5 and a lifting mechanism installed at the bottom of the rigid block 5. The lifting mechanisms are three groups evenly arranged on the rigid block 5 The rhombus jack 1 at the bottom can realize the lifting of the rigid block 5 pads by the rhombu...

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Abstract

The invention belongs to the technical field of construction of a pipe jacking method and relates to a device for simulating shearing friction of a pipe joint of a jacking pipe and a rocky surroundingrock and a testing method. A hoisting mechanism is arranged at the bottom of a rigid block; a rock base is arranged above a ball base at the top of the rigid block and a curved-surface groove is formed in the middle of the rock base; the curved-surface groove is internally provided with a concrete test piece matched with the shape of the curved-surface groove; a selfie stick with a selfie stick button is mounted at the outer side of a triggering end of the left side of the rock base; a fixed rod which is detachably connected with the selfie stick is fixedly mounted on a first counter-force wall at the outer side of the selfie stick; a supporting rod and a second counter-force wall are sequentially and fixedly mounted at the right side of a push plate on the ball base at the right side ofthe rock base; the second counter-force wall is fixedly provided with a displacement mechanism which is fixed through a supporting rod; a pressure sensor between the displacement mechanism and the push plate and the displacement mechanism are connected to a computer through lead wires; the whole device can be used for simulating a process of jacking the concrete jacking pipe in the surrounding rock in real time, and a jacking pipe-surrounding rock friction rule in a jacking process is tested and researched.

Description

technical field [0001] The invention belongs to the technical field of pipe jacking construction, and relates to a device and a test method for simulating the shear friction between a pipe jacking joint and rock surrounding rock, in particular to a device for simulating the shear friction between a pipe jacking joint and rock surrounding rock Specimen setup and simulation method for friction tests. Background technique [0002] With the wide application of the pipe jacking method in municipal infrastructure construction, energy transportation engineering, water conservancy and hydropower engineering and other fields, large cross-section and long-distance pipe jacking projects have also emerged. [0003] Pipe jacking construction is an extremely complex mechanical process, and its construction quality is closely related to engineering geological conditions, pipe joint structure, type selection and layout of relay rooms, jacking equipment and lubricating materials. Although p...

Claims

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Application Information

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IPC IPC(8): G01N3/24G01N19/02G01N3/02
CPCG01N3/02G01N3/24G01N19/02G01N2203/0025
Inventor 钟祖良李超刘新荣何冠男邓志云
Owner 重庆大学建筑规划设计研究总院有限公司
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