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Engineering Construction Standard Full Text Information System
Construction Industry Standard of the People's Republic of China JG/T3055—1999
Pile dynamic testing instruments
Pile dynamic testing instruments Construction Standard
1999-03-22 Issued
1999-09-01 Implementation
Released by the Ministry of Construction of the People's Republic of China
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JG/T3055—1999
This standard is compiled according to the document No. 19957174 of the Ministry of Construction. It is the first time that this industry product standard has been compiled in China. The structure, technical elements and expression rules of this standard strive to be consistent with the current relevant national standards and industry standards.
The technical requirements of the items specified in this standard, among which the main performance requirements are based on the provisions of the main performance indicators of the pile dynamic tester in JGJ/T93-1995 "Low Strain Dynamic Test Regulations for Pile Foundations", JGJ106-1997 "High Strain Dynamic Test Regulations for Pile Foundations" and JG (Construction) 0003-1996 "Measurement and Verification Regulations for Pile Dynamic Tester Measurement System", and refer to the instrument indicators of some domestic and foreign manufacturers: other technical requirements and test method inspection rules are mainly based on the relevant requirements of the "Electronic Measuring Instrument" series of national standards and JG (Construction) 0003-1996. In addition, according to the field use characteristics of the pile dynamic tester and the development trend of domestic and foreign instrument research and production, specific requirements are respectively stipulated for the environmental adaptability and product classification of the pile dynamic tester. Appendix A of this standard is the appendix of the standard.
This standard is proposed by the Standard and Quota Research Institute of the Ministry of Construction. The China Academy of Building Research, the responsible unit for the construction engineering standard technology of the Ministry of Construction in this standard, is the official website of the Ministry of Construction.
This standard was drafted by China Academy of Building Research, Hefei University of Technology, Wuhan Institute of Rock Mechanics, Chinese Academy of Sciences, and General Research Institute of Building Research, Ministry of Metallurgy. The main drafters of this standard are Chen Fan, Li Zhiyuan, He Huaijian, Xue Jialin, Deng Zhonghua, and Liu Yanling.
This standard is entrusted to the Institute of Foundation Engineering, China Academy of Building Research for interpretation. Engineering Construction Standards Full-text Information System
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Construction Industry Standards of the People's Republic of China Pile Dynamic Testing Instruments
Pile dynamic testing instruments Scope
JG/T3055—1999
The standard specifies the classification, technical requirements, test methods, inspection rules and marking, packaging, transportation, storage, etc. of pile dynamic testing instruments (hereinafter referred to as dynamic testing instruments). This standard applies to measuring and analyzing instruments for dynamic testing of the pile body structural integrity and the vertical bearing capacity of single piles (axial bearing capacity for inclined piles) of engineering foundation piles using the low strain or high strain method specified in the current standards JGJ/T93-1995 and JGJ106-1997.
Cited Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB191--1990 Pictorial marking for packaging, storage and transportation GB4793.1-1995 Safety requirements for electrical equipment for measurement, control and laboratory use Part 1: General requirements
GB/T5081-1985 Guide for collecting data on reliability, effectiveness and maintainability of electronic products in the field
GB/T6587.2-1986 Temperature test for electronic measuring instruments Approved by the Ministry of Construction of the People's Republic of China on March 22, 1999 Engineering Construction Standard Full Text Information System
Implementation on September 1, 1999
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GB/T6587.3-1986
Electronic measuring instruments
Humidity test
6 Electronic measuring instruments
GB/T6587.4-1986
Vibration Test
GB/T6587.5—1986
6 Impact test for electronic measuring instruments
6 Transportation test for electronic measuring instruments
GB/T6587.6—1986
GB/T6587.8—1986 Power supply frequency and voltage test for electronic measuring instruments GB/T6833—1987 Electromagnetic compatibility test specification for electronic measuring instruments GB/T1146 3—1989Reliability test of electronic measuring instruments 5Low strain dynamic testing regulations for pile foundations
JGJ/T93—1995
JGJ106—1997High strain dynamic testing regulations for pile foundationsJJG (Construction) 0003—1996Metric verification regulations for measurement systems of pile foundation dynamic testing instrumentsSJ1743—1981X-type small round plug socket
3Definition
This standard adopts the following definitions.
The pile dynamic testing instrument consists of a measuring system and an analysis system. It is a test and analysis instrument used to detect the structural integrity of the engineering foundation pile and the vertical bearing capacity of a single pile under impact or vibration loads. It can also be used to monitor the piling process of prefabricated piles and steel piles. 3.2 The pile dynamic testing instrument measuring system (hereinafter referred to as the measuring system) is composed of sensors, cables, conditioners, data collectors, recording indicators, etc. According to the different physical quantities to be measured, the measuring system can be divided into four subsystems: acceleration, velocity, strain and dynamic force. The pile dynamic testing instrument analyzing system (hereinafter referred to as the analyzing system) is composed of a computer, or a dynamic signal analyzer, or a digital signal processor with calculation and analysis functions, and application software compiled according to the principles of various dynamic pile testing methods. It can process and analyze the measured data, and sometimes also has the functions of controlling signal conditioning and data acquisition.
4 Product classification
4.1 Classification by use function
a) Low strain dynamic measuring instrument;
b) High strain dynamic measuring instrument;
c) High and low strain dynamic measuring instrument.
The manufacturer shall provide the functional characteristics of the product. 4.2
Classification by structure
Separate dynamic measuring instrument: The signal conditioner, data acquisition device and other instruments of the measurement system are connected to the microcomputer of the analysis system through a bus, serial or parallel interface and a cable.
Integrated dynamic measuring instrument: The signal conditioner, data acquisition and analysis system of the measurement system are integrated together by the microcomputer board-level products, or the digital signal processor and the microcomputer board-level products are integrated together, and the structure becomes a portable hardware entity powered by a single power supply.
The manufacturer shall provide the structural type of the product. 4.3
Classification by working mode of measuring amplifier
a) Program-controlled and non-program-controlled;
b) Fixed-point and floating-point.
Manufacturers should give the working mode of the product. Classification by power supply
According to the power supply used, it can be divided into three types: DC, AC, and AC/DC. Manufacturers should give the type and requirements of the product power supply. Classification by other characteristics
Manufacturers should indicate in the product classification content. Model naming
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DCY口E
Marking example
DC power supply, program-controlled
Marked as:
JG/T3055-1999
Remodel serial number: capital Chinese pinyin letter call order (prototype can be omitted) DC is Z; AC is J: AC/DC dual-purpose is program-controlled as C: non-program-controlled as F; fixed-point and floating-point are not indicated as separated as F: integrated as Y
Low strain is D: High strain is G: High and low strain compatibility is J dynamic instrument
Integrated pile high strain dynamic instrument,Modification serial number B Pile foundation dynamic tester DCYGYCJ-2JG/T3055—19995 Technical requirements
This standard divides dynamic testers into three levels according to the main technical performance and environmental performance of the product. The manufacturer should clearly indicate the level to which the product belongs. The performance indicators given in this standard are only the minimum requirements for each level. The performance indicators of the dynamic tester should at least meet the requirements of the lowest level (level 1). Some performance indicators should be selected to a higher level, but the level of the lowest performance indicator should be used as the level of the product. 5.1 General requirements
5.1.1 Component design and evaluation requirements
The hardware technical performance indicators must comply with the standards and technical regulations for the relevant dynamic pile test methods, and reliability and maintainability design should be carried out. For serialized dynamic testers, the principles of serialization and standardization should be followed, and they should have certain self-test functions. 5.1.2 Software Design Requirements
The analysis and calculation methods of the compiled test and analysis software must comply with the standards and technical regulations of the corresponding dynamic pile test methods. The configured software should be compatible with the hardware resources of the hardware system. In addition to the system software (or additional application software), it should also be equipped with complete diagnostic software or inspection procedures. For the software of the same series of dynamic test instruments, the principles of serialization, standardization and modularization should be followed.
5.1.3 Software Technical Document Requirements
The functions and basic usage methods of the software system should be fully described, including:
a) The purpose of the application (function, performance, accuracy, time characteristics, flexibility); b) The operating environment;
c) The use process (installation initialization, input and output data background and format); d) Operation error handling and recovery.
These descriptions should be included in the user manual. 5.1.4 Structural design requirements
The assembly design of the electrical and mechanical parts and components of the dynamic tester shall comply with the requirements of GB/T4793.1.
The housing and frame structure shall be compact and strong, and meet the requirements of dustproof, moisture-proof, vibration and shock resistance.
The size and specifications of the connectors shall comply with the requirements of SI1743-81. 5.2
Appearance and structure
The surface of the product shall not have obvious dents, scratches, cracks, deformation and pollution. The surface coating shall be uniform and shall not bubble, crack, fall off or wear. Metal parts shall not have rust and other mechanical damage.
5.2.2 The parts of the product shall be fastened without looseness, and the control of the keyboard, switch, button and other control components shall be flexible and reliable.
Instruments with grounding terminals shall be clearly marked. The text, symbols and signs describing the functions shall be clear and correct, and shall comply with the provisions of GB/4793.1.
Main performance
The main performance of the product is divided into three levels, see Table 1. 5.4 Environmental conditions
5.4.1 Climate environment adaptability is divided into three levels, see Table 2. 5
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Mechanical environment adaptability is divided into three levels, see Table 3 and Table 4. 5.4.2
Table 1 Main performance
A/D converter
Resolution, bit
Single channel sampling frequency, kHz
Frequency response
When the amplitude-frequency error is <±5%, Hz
When the amplitude-frequency error is <±10%, 1z
Speed measurement||t t||Subsystem
Speed measurement
Subsystem
Strain measurement
Subsystem
Dynamic force measurement
Subsystem
Amplitude nonlinearity
Zero drift during impact measurement
Sensor installation resonant frequency D,kHz
Rate response 2)
99-000
≤10%
≤2%ES
z15~1000
When amplitude frequency error <±10%, Hz
When phase frequency nonlinearity error ≤10°
Constant nonlinearity
Sensor installation resonant frequency”, kHZ
Sensor static performance
2-5 000
2~5000
18-000
≤1%FS<0.5%FS
10~1200
Not applicable
Non-linearity, hysteresis, repeatability
Zero output
Resistance balance range
Strain signal conditioner
Frequency response range upper limit when error <±5%, H
Sensor installation resonant frequency",
Sensor static performance
Amplitude non-linearity
Nonlinearity, hysteresis, repeatability
Zero point output (strain gauge)
Sensor installation resonant frequency 1), kHz
Single channel sampling points
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<±10%FS
≥±1.0%
Not applicable
Not applicable
Not applicable
≤±5%FS
≥±1.5%
h<±05//<±02//2
≤±1%S/2h
>1 000
<±10%FS
Strain gauge
Piezoelectric
≤0.5%FS
≤±5%FS
>1 024
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System dynamic range, dB
Output noise level effective value, mV
Attenuation gear (or program-controlled amplification) error
Channel consistency error between two channels
Continued Table 1
Amplitude, dB
Phase, ms
1) Refers to the first resonant frequency measured in the laboratory when the sensor installation method is close to the actual use. 2) For the "dynamic parameter method\measurement, the frequency response range can be 10~300 Hz, for steady-state mechanical impedance
measurement, its phase-frequency nonlinear error can be ignored. 3) The natural frequency corresponding to the egg finger speedometer when the phase difference is 90°: the high-frequency upper limit of the frequency response range.
4) When the front-end amplification or six-wire connection method is not used, the correction value of the cable resistance on the bridge voltage should be given. Table 2
Temperature, ℃
Relative humidity
Working conditions
Limit conditions||tt ||Storage and transportation conditions
Working conditions
Storage and transportation conditions
Atmospheric pressure, kPa
Climate and environmental adaptability
-5～45
-10~55
20%~75%40℃
—10~55
-20~60
20%~90%50℃
5%~90%
50-90% 12 55C-90%2460c90%18 m86~106
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Test phase
Resonance search
Resonance hold
Report cycle
Test strip
Frequency range, Hz
Sweep rate
Drive amplitude or acceleration
Speed (peak value)
Drive amplitude or acceleration
Speed (peak value)
Time, mtn
Rate cycle range,
Drive amplitude or acceleration||tt ||Speed (peak)
Daily frequency
Vibration adaptability
Non-working state
5~33~5
Working state
≤loct/min
0.100.2mml)
1.6mm(5HzK10Hz)
0.8mm(10Hz<25Hz)
0.2mm(25Hz<55Hz)
5~55~5
0.1~0.2mm)
5~55~5
l cot/min
1DDepending on the firmness of the instrument, it can be between 0.1~0.Take any value within the range of 2mm. Table 4 Impact adaptability
Acceleration, m/s
Pulse duration
Number of impacts
Drop height or angle
Inclined drop state
Number of drops
(6±1)ms
3 axial directions (optional
surfaces) each once
Half sine
Non-working state
50mm or 45°
Working state
(11±1)ms
6 surfaces (if the instrument is
Non-working state
55~150
30-m/z2
55~150~55
(6±1) ms
When one side has raised parts
and cannot be tightly fixed to the impact table surface, this side can be exempted from work); 3 times on each side
Half sine
Non-working state
Half sine
Non-working state
100mm or 45%
Working state
Once on each side (4 times in total)
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5.4.3 When the circulation conditions of the product are severe and meet the level 3 circulation conditions specified in GB/T6587.6-1986, the drop adaptability requirements of the product transportation packaging should be specified in the enterprise standard.
5.5 Safety requirements
5.5.1 The general safety requirements of the product shall comply with the relevant provisions of GB/T4793.1. 5.5.2 Earth leakage current
The earth leakage current of the product shall comply with the provisions of 6.3.1.2 of GB/T4793.1-1995.
5.5.3 Dielectric strengthbzxz.net
The dielectric strength of the product shall comply with the provisions of 6.3.1.1 of GB/T4793.1-1995. 5.6 Power supply requirements
5.6.1 For AC powered products, they shall be able to operate normally under the conditions of 220V±22V, 50Hz±2.5Hz. Power supplies with special requirements for AC voltage and frequency shall be explained.
For DC powered products, they shall be able to operate normally under the conditions of a change of ±10% of the nominal DC voltage.
Requirements for cable and connector connection
5.7.1 The cable and connector connection should not be subjected to mechanical stress only by welding or by tying a soft wire in the connector entrance.
5.7.2 The cable should be equipped with a soft wire entrance sheath at the entrance where it is connected to the connector. 5.7.3 The mechanical properties of the cable and connector connection should comply with the provisions of Table 5. Table 5 Mechanical properties of cable and connector connection Cable diameter D, mm
Electromagnetic compatibility requirements
Tension, N
Torque, Nm
When the product has electromagnetic compatibility requirements, it should comply with the relevant provisions of GB/T6833. 9
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5.9 Reliability Requirements
The unacceptable value m of the mean time between failures (MTBF) is used as an indicator to measure the reliability level of the product, and its value should be given in the enterprise standard. 5.10 Other requirements
5.10.1 The manufacturer shall provide
a) the maximum power consumption of the instrument;
b) the cut-off value of the overload (overvoltage, overcurrent, short circuit) protection device of the instrument;
c) the mass of the entire instrument or the mass of each extension and accessory (kg);
e) the external interface standard of the instrument with programmable control function or separate instrument, including the connection function, level, coding and other requirements;
f) the model, specification, accuracy, measurement rated output and limit value, typical value of environmental performance index and calibration certificate of the sensor;
g) the time or frequency indication error of the motion measuring instrument;
D the specific sensor connection and installation method, and specify the technical requirements for the connecting cable and installation fixture;
D the battery-powered instrument shall state the specifications of the battery used and the time the battery guarantees normal operation. For rechargeable batteries, the charging voltage, current, recharging time and charger usage should be stated.
5.10.2 The sensitivity and range of the sensor should be given in accordance with the requirements of JGJ/T93 and JGJ106
For the excitation device used in the "steady-state mechanical impedance method", its technical performance 5.103
indicators should comply with the provisions of JGJ/T93.
Test method
6.1 Test environment conditions
In this standard, except for climate environment tests, reliability tests and enterprise standards as otherwise specified, other tests are carried out under the following normal atmospheric conditions. 10
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1The manufacturer should provide
a) the maximum power consumption of the instrument;
b) the cut-off value of the instrument's overload (overvoltage, overcurrent, short circuit) protection device;
c) the mass of the entire instrument or the mass of each extension and accessory (kg);
e) the external interface standard of the instrument with programmable control function or separate instrument, including the connection function, level, coding and other requirements;
f) the model, specification, accuracy, measurement rated output and limit value, typical value of environmental performance index and verification certificate of the sensor;
g) the time or frequency indication error of the dynamic measuring instrument;
D the specific sensor connection and installation method, and specify the technical requirements for the connection cable and installation fixture;
D the battery-powered instrument should state the specifications of the battery used and the time the battery guarantees normal operation. For rechargeable batteries, the charging voltage, current, recharge time and charger usage should be stated.
5.10.2 The sensitivity and range of the sensor shall be given according to the requirements of JGJ/T93 and JGJ106
For the excitation device used in the "steady-state mechanical impedance method", its technical performance 5.103
indicators shall comply with the provisions of JGJ/T93.
Test method
6.1 Test environment conditions
In this standard, except for climate environment tests, reliability tests and enterprise standards, other tests are carried out under the following normal atmospheric conditions. 10
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1The manufacturer should provide
a) the maximum power consumption of the instrument;
b) the cut-off value of the instrument's overload (overvoltage, overcurrent, short circuit) protection device;
c) the mass of the entire instrument or the mass of each extension and accessory (kg);
e) the external interface standard of the instrument with programmable control function or separate instrument, including the connection function, level, coding and other requirements;
f) the model, specification, accuracy, measurement rated output and limit value, typical value of environmental performance index and verification certificate of the sensor;
g) the time or frequency indication error of the dynamic measuring instrument;
D the specific sensor connection and installation method, and specify the technical requirements for the connection cable and installation fixture;
D the battery-powered instrument should state the specifications of the battery used and the time the battery guarantees normal operation. For rechargeable batteries, the charging voltage, current, recharge time and charger usage should be stated.
5.10.2 The sensitivity and range of the sensor shall be given according to the requirements of JGJ/T93 and JGJ106
For the excitation device used in the "steady-state mechanical impedance method", its technical performance 5.103
indicators shall comply with the provisions of JGJ/T93.
Test method
6.1 Test environment conditions
In this standard, except for climate environment tests, reliability tests and enterprise standards, other tests are carried out under the following normal atmospheric conditions. 10
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