Earth pressure measuring device and its calibration method for model test
A measuring device and model test technology, which is applied in the field of tunnel engineering research, can solve problems such as the inability to shield the influence of lateral forces, and achieve the effects of simple structure, improved precision, and low cost
Active Publication Date: 2022-06-03
SOUTHWEST JIAOTONG UNIV
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] Aiming at the above-mentioned problems in the prior art, the present invention provides an earth pressure measuring device and its calibration method for model tests, which solves the problem that the earth pressure measuring device used in the simulation test in the prior art cannot shield the influence of lateral force The problem
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0023] As shown in Figures 1 to 3, the earth pressure measuring device for the model test comprises a water tank provided with a water storage cavity 11
[0026] The end of the piston 4 away from the water tank 1 is connected with the piston sleeve 5 through a flexible seal 7. Through the flexible seal 7 can
[0027] The flexible seal 7 includes a first annular boss 71 and a first annular boss 71 and a first annular boss 71 and a second
[0031] The top of the piston sleeve 5 is provided with a return feedback mechanism 8 that detects whether the piston 4 returns. When the pressure at the top of the piston 4
[0033] The piston sleeve 5 is provided with a stop 82 that prevents the lever 81 from rotating downward. In the actual processing process, it can be
[0034] The top of the liquid column pipe 2 is detachably connected with a recoil device 9. Preferably, the backflushing device 9 is connected to the liquid column pipe 2 through a pipeline
[0037] P
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides an earth pressure measuring device and a calibration method thereof for model tests, which relate to the technical field of tunnel engineering research, and include a water tank provided with a water storage chamber and a liquid column tube communicating with the water storage chamber, and the water storage chamber There is a water baffle on the top of the water baffle, and a piston is fixed on the water baffle, and the piston is slidably set in the open-ended piston sleeve, and the water tank is sealed in the isolation box, which includes a rigid shell and a buffer filled inside the rigid shell ball. The problem that the earth pressure measuring device used in the simulation test in the prior art cannot shield the influence of the lateral force is solved.
Description
Earth pressure measuring device for model test and its calibration method technical field The present invention relates to the technical field of tunnel engineering research, particularly relate to a kind of earth pressure measurement for model test Device and its calibration method. Background technique [0002] The earth pressure sensor is suitable for measuring the internal earth pressure of structures such as slopes, foundation pits, tunnels, and dams. An important instrument commonly used in pressure testing, the commonly used sensor for measuring earth pressure in the prior art is a string vibration earth pressure cell, The string vibration type earth pressure cell is buried in the designated position. When the soil stress in the measured structure changes, the induction plate will generate Deformation, the deformation transmitted to the vibrating wire is transformed into a change in the vibrating wire stress, thereby changing the vibration frequency of the vibra...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/02G01L25/00
CPCG01L1/02G01L25/00
Inventor 章慧健刘伟雄张帅曹攀高文山郑余朝
Owner SOUTHWEST JIAOTONG UNIV