Novel indoor earth pressure cell calibration tank
An earth pressure cell, calibration tank technology, applied in the direction of force/torque/work measuring instrument calibration/test, measuring device, instrument, etc., can solve problems such as deviation, avoid air leakage, increase strength and stability, Guaranteed air tightness
Pending Publication Date: 2016-03-23
HENAN UNIVERSITY OF TECHNOLOGY
View PDF0 Cites 7 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, in the engineering environment, it will encounter various factors (sand particle size, arch effect, stress concentration, loading speed, etc.), so there will be a large deviation from the original calibration coefficient
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
[0020] The accompanying drawings show the schematic structural diagrams of the preferred embodiments involved in the present invention; the technical solutions of the present invention will be described in detail below in conjunction with the detailed drawings.
[0021] As shown in the figure, the indoor earth pressure cell calibration tank in this embodiment includes a tank cover 8 , a tank body 9 , tank legs 10 , and a rubber air bag 11 . That is, the upper structure and the lower structure, the tank cover 8 and the tank body 9 are connected by high-strength bolts.
[0022] The pressure gauge 3 is placed at the forefront of the calibration tank, which is convenient for the staff to read. After the line hole 5 passes through the lead wire 13, the hole will be blocked with an airtight material to ensure the airtightness in the calibration tank. The air compressor is connected to the intake valve 2 to ensure that the connection is tight, the air pressure generated by the air c...
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 relates to a novel indoor earth pressure cell calibration tank. The novel indoor earth pressure cell calibration tank comprises a safety valve, a pressure gauge, an inlet valve, an exhaust valve, a line hole, a tank cover, a tank body, an earth pressure cell, a rubber airbag and sand. The rubber airbag plays a role in sealing and force transfer. The earth pressure cell is placed on steel plate sand and then slowly covered with sand to ensure that the sand has the same property as original earth, a lead is connected with an acquisition device via the line hole to plug the line hole and ensure air tightness, air pressure in the calibration tank is increased via an air compressor, the air pressure enables the rubber airbag to produce surface pressure on the sand, and then the air pressure acts on the earth pressure cell. The value of the pressure gauge is read, and the pressure on the sand is controlled by controlling the magnitude of the air pressure and transferred to the earth pressure cell. The voltage output by the earth pressure cell is acquired via the acquisition device, and a calibration curve of the earth pressure cell in the sand is obtained according to the value of the pressure gauge and the voltage output by the earth pressure cell.
Description
technical field [0001] The invention relates to a loading test device, in particular to a novel indoor earth pressure cell calibration tank, which can be used for earth pressure cell calibration in geotechnical engineering. Background technique [0002] With the development of economy and technological progress, the number of large buildings, structures, and super-large bridges is increasing, and the requirements for foundation foundations are becoming increasingly stringent. Pile foundations can significantly increase the bearing capacity of foundations. It is particularly important to study the form of piles and the measurement of soil pressure during penetration. Therefore, in geotechnical engineering, underground engineering, water conservancy and hydropower, etc., the measurement of earth pressure shows a very important aspect. The measurement of earth pressure is an important aspect of soil mechanics theory and experimental research, and an important content of enginee...
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 IPC IPC(8): G01L25/00
CPCG01L25/00
Inventor 肖昭然吕清显朱亮亮周志强郭祝辉赵宪强蒋敏敏曹明明李婷婷
Owner HENAN UNIVERSITY OF TECHNOLOGY