Search result: GB/T 40961-2021
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Calibration methods of rock triaxial testing apparatus
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GB/T 40961-2021
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| Standard ID | GB/T 40961-2021 (GB/T40961-2021) | | Description (Translated English) | | | Sector / Industry | National Standard (Recommended) |
GB/T 40961-2021
Calibration methods of rock triaxial testing apparatus
ICS 27.140
CCSP55
National Standards of People's Republic of China
Calibration method of rock triaxial tester
Released on 2021-11-26
2022-06-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Foreword Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Check performance 2
4.1 Loading device 2
4.2 Load indicating device 2
4.3 Extensometer 2
5 Calibration method 2
5.1 Calibration equipment 2
5.2 Checking environmental conditions 3
5.3 Check before calibration 3
5.4 Loading device verification 3
5.5 Check of load indicating device 3
5.6 Extensometer calibration 5
6 Calibration results and calibration cycle 5
6.1 Check result 5
6.2 Calibration cycle 5
Appendix A (informative) Commonly used symbols, units and instructions for calibration of rock triaxial tester 6
Appendix B (Informative) Verification record format of rock triaxial tester 7
Appendix C (informative) The format of the calibration certificate of the rock triaxial tester and the format of the calibration result notice 9
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents.
This document was proposed and managed by the Ministry of Water Resources of the People's Republic of China.
Drafting organizations of this document. Yangtze River Water Resources Commission, Yangtze River Academy of Sciences, Wuhan Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan University of Technology, Chengdu
Dudonghua Zhuoyue Technology Co., Ltd., Changchun Pingce Test Instrument Co., Ltd.
The main drafters of this document. Zhu Jiebing, Wu Aiqing, Zhou Hui, Zhang Guang, Guo Guoqing, Wang Bin, Zheng Yun, Liu Xiaohong, Wang Xin.
Calibration method of rock triaxial tester
1 Scope
This document describes the calibration performance, calibration method, calibration result and calibration cycle of the rock triaxial tester.
This document is applicable to rocks with an axial rated load of 500kN~5000kN and a lateral rated load of 20MPa~150MPa.
Shaft tester calibration. Refer to the calibration of the rock triaxial creep tester.
2 Normative references
The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations
Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
This document.
GB/T 2611-2007 General technical requirements for testing machines
GB/T 36416.1 Testing Machine Vocabulary Part 1.Material Testing Machine
JJF1096 Extensometer Calibrator Calibration Specification
JJG762 Extensometer
3 Terms and definitions
The following terms and definitions defined in GB/T 36416.1 apply to this document.
3.1
Rock triaxial testing apparatus rocktriaxial testingapparatus
Triaxial instrument
A testing machine for testing the strength and deformation characteristics of rock specimens under the three-dimensional stress state of equal lateral pressure (σ2=σ3).
Note. Consists of axial and lateral loading devices, load indicating devices and deformation measuring devices. Refer to Appendix A for symbols, units and instructions commonly used in triaxial instrument calibration.
3.2
Extensometer
When the triaxial instrument exerts a load on the rock specimen, the specimen deformation measuring device is composed of a deformation sensor and a deformation display unit.
3.3
Resolution
The test machine indicating device that can effectively distinguish indicates the smallest difference between the indicated values.
[Source. GB/T 36416.1-2018, 6.40]
3.4
Standard dynamometer
A force measuring instrument for verification, calibration, comparison, and transfer of standard force values.
3.5
Division value
Indicates the difference between the magnitudes represented by two adjacent scale lines on the scale of the indicating device.
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