Deformation modulus E testing instrument and method thereof

A deformation modulus, tester technology, applied in instruments, measuring devices, scientific instruments, etc., can solve the problems of high labor intensity, difficult reading by testers, inaccurate data, etc., and achieve the effect of reducing labor intensity

Inactive Publication Date: 2007-02-07
CHINA RAILWAY FIFTH SURVEY & DESIGN INST GRP
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The technical problem that the present invention needs to solve is, for the K in the prior art 30 The load-settlement relationship measured by the plate load test cannot completely reflect the real strength of the subgrade filling. Not only is the data inaccurate, but there are also shortcomings such as difficult reading for the test personnel and high labor intensity. In order to overcome these shortcomings, it is necessary to re- Develop a kind of accurate, convenient detection equipment and detection method, the purpose of the present invention is to provide a kind of deformation modulus E v2 Tester and test method, the deformation modulus E v2 The load-settlement curve of the test is obtained after step-by-step loading, unloading, and secondary loading. It ca...

Method used

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  • Deformation modulus E testing instrument and method thereof
  • Deformation modulus E testing instrument and method thereof
  • Deformation modulus E testing instrument and method thereof

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Embodiment Construction

[0021] refer to figure 1 , figure 2 , represents the deformation modulus E described in the present invention v2 The overall schematic diagram of the tester and the diagram of the loading and carrying device. In the figure, the loading and carrying device 1 includes 4 parts. They are the manual hydraulic pump 1.1, which loads the force to the bearing plate 1.4 at the bottom of the jack through the hydraulic cylinder 1.2 and the extension rod 1.3 , the loading and carrying device is connected to the electronic measuring instrument 2 through the force sensor 1.5, and the top of the device is provided with an adjusting pressure head 1.6.

[0022] refer to image 3 , represents the outline schematic diagram of the electronic measuring instrument, the device 2 includes a casing 2.1, a switch knob 2.2, an LCD display 2.3 on the front panel, an input and output interface 2.4, a charger socket 2.5, and a printer interface 2.6 on the side panel.

[0023] refer to Figure 4a , 4b r...

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Abstract

The deformation-modulus EV2 tester comprises: a loading device connected with a carrying device, an electronic detector connected with force sensor in last device, and the drop-off measurement device. This invention obtains result with large discrete, and has high measurement precision.

Description

technical field [0001] The invention belongs to the field of detection equipment, and in particular relates to a deformation modulus E of equipment used for detection of roadbed construction quality. v2 Tester and test method. Background technique [0002] In my country's current "Code for Design of Railway Subgrade" and "Code for Construction of Railway Subgrade", the foundation coefficient K is used for the detection of the strength index of the compaction quality of the subgrade. 30 value, which is passed through K 30 Tester to read the value. Although the foundation coefficient K 30 The value is also a parameter reflecting the strength and deformation relationship of subgrade soil, but K 30 The load-settlement curve of the test is obtained from one load, and its settlement (deformation) includes the elastic deformation and plastic deformation of the filler, which can only explain the deformation relationship of the subgrade, and cannot truly reflect the real strength...

Claims

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Application Information

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IPC IPC(8): G01N3/00E02D33/00
Inventor 李庆民肖金凤李树峰王安升刘长勇王慨慷东爱明熊倚勤胡华军
Owner CHINA RAILWAY FIFTH SURVEY & DESIGN INST GRP
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