GB/T 33521.31-2023Mechanical vibration - Ground-borne noise and vibration arising from rail systems - Part 31: Guideline on field measurements for the evaluation of human exposure in buildings (English PDF)
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Issued by
State Administration for Market Regulation, China National Standardization Administration
Level / Type
National · Recommended
Issue date
March 17, 2023
Implementation date
October 1, 2023
Scope
GB/T 33521.31-2023 (Mechanical vibration - Ground-borne noise and vibration arising from rail systems - Part 31: Guideline on field measurements for the evaluation of human exposure in buildings) is available as an English-translated PDF.
GB/T 33521.31-2023 is the Chinese standard "Mechanical vibration - Ground-borne noise and vibration arising from rail systems - Part 31: Guideline on field measurements for the evaluation of human exposure in buildings".
Its scope clause reads: This document provides standardized guidance for field measurements of ground-induced structure-borne noise and ground-borne vibration for comparison and future development empirical model.
At the same time, in order to ensure the reliability of the evaluation of human exposure in residential buildings, the basic requirements and practice of measurement are also provided. experience.
There are many reasons for conducting on-site measurements of ground-induced structure-induced noise and ground-borne vibrations from rail system operations, such as From complaint investigation to prediction model validation, diagnosis and research as detailed in 7.2 of GB/T 33521.1-2017.In this document, consider Two evaluation ranges were considered. a) Scope 1 is the basic measurement of floor vibration and noise in building rooms to evaluate human exposure to ground-borne and ground-induced vibrations.
Structured noise. The two accuracy classes are. 1) basic measurements with the lowest precision; 2) The measurement with reduced uncertainty has better reproducibility and is more suitable for prediction.
Ground-induced structure-borne noise is concerned with noise radiated by vibrations of building components in a room such as floors, walls, and It is represented by an acoustic quantity and a vibration quantity.
Identifying ground-induced structured noise (which, unlike airborne noise, may also exist) requires Simultaneously measure noise and vibration. However, only vibration measurement is required in the case of very low frequency vibration (below 10Hz~16Hz).
Ga Rattles can also be caused by vibrations, which can come from building components or furniture. This document does not describe the characteristics of this phenomenon, but Record presence when it occurs.
Note.
In some cases, Scope 1 is measured on the ground outside the building (to solve the inaccessible indoor measurement or to comply with national regulations), although usually Measurements within buildings are preferred. b) Scope 2 is the vibration evaluation measurement transmitted to the building, including the vibration measurement at or near the foundation of the building, and the vibration measurement of the building Vibration measurements of the ground near objects to estimate building coupling losses and building transmissibility.
This document does not deal with source characterization measurements in the vicinity of the track (on the ground or in tunnels). Requirements were specified to obtain a consistent minimum data set across surveys to allow comparison of data from different sites. Its clauses include terms and definitions.
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Document preview — GB/T 33521.31-2023
National Standard of the People's Republic of China
- ICS
- 17.160
- Classification
- J 04
Issued by: State Administration for Market Regulation, China National Standardization Administration
Contents
- Preface
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 3.1 Building coupling loss
- 3.2 Building transmissibility
- 3.3 Room Corner
- 3.4 Orbital event category
- 4 Requirements for on-site measurement of buildings
- 4.1 General
- 4.2 Instrument
- 4.3 Fixing of the vibration sensor
- 4.4 Measurement locations in buildings
- 4.5 Vibration measurement position and direction
- 4.6 Noise measurement position
- 4.7 Measurement conditions
- 4.8 Measurement procedure
- 4.9 Analysis, evaluation and reporting procedures
- Appendix A (Informative) Prediction of Ground-Induced Structure-Based Noise Based on Vibration
- Appendix B (informative) Vibration transmission to buildings
- Appendix C (Informative) Sensor Installation
- Appendix D (Informative) Questionnaire Response Scale
1 Scope
This document provides standardized guidance for field measurements of ground-induced structure-borne noise and ground-borne vibration for comparison and future development empirical model. At the same time, in order to ensure the reliability of the evaluation of human exposure in residential buildings, the basic requirements and practice of measurement are also provided.
experience.
There are many reasons for conducting on-site measurements of ground-induced structure-induced noise and ground-borne vibrations from rail system operations, such as
From complaint investigation to prediction model validation, diagnosis and research as detailed in 7.2 of GB/T 33521.1-2017.In this document, consider
Two evaluation ranges were considered.
a) Scope 1 is the basic measurement of floor vibration and noise in building rooms to evaluate human exposure to ground-borne and ground-induced vibrations.
Structured noise. The two accuracy classes are.
1) basic measurements with the lowest precision;
2) The measurement with reduced uncertainty has better reproducibility and is more suitable for prediction.
Ground-induced structure-borne noise is concerned with noise radiated by vibrations of building components in a room such as floors, walls, and
It is represented by an acoustic quantity and a vibration quantity. Identifying ground-induced structured noise (which, unlike airborne noise, may also exist) requires
Simultaneously measure noise and vibration. However, only vibration measurement is required in the case of very low frequency vibration (below 10Hz~16Hz). Ga
Rattles can also be caused by vibrations, which can come from building components or furniture. This document does not describe the characteristics of this phenomenon, but
Record presence when it occurs.
Note. In some cases, Scope 1 is measured on the ground outside the building (to solve the inaccessible indoor measurement or to comply with national regulations), although usually
Measurements within buildings are preferred.
b) Scope 2 is the vibration evaluation measurement transmitted to the building, including the vibration measurement at or near the foundation of the building, and the vibration measurement of the building
Vibration measurements of the ground near objects to estimate building coupling losses and building transmissibility.
This document does not deal with source characterization measurements in the vicinity of the track (on the ground or in tunnels).
Requirements were specified to obtain a consistent minimum data set across surveys to allow comparison of data from different sites.
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references
For documents, 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 3222.2-2022 Description, Measurement and Evaluation of Acoustic Environmental Noise Part 2.Determination of Sound Pressure Level (ISO.1996-2.
2017, IDT)
GB/T 33521.1-2017 Ground-induced structure-induced noise and ground-borne vibration generated by mechanically vibrating track systems - Part 1.General
Then (ISO 14837-1.2005, IDT)
3 Terms and Definitions
The following terms and definitions defined in GB/T 33521.1-2017 apply to this document.
GB/T 32073.1 | GB/T 34018 | GB/T 33877 | GB/T 33523.700 | GB/T 33523.600 | GB/T 33521.32 | […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 64 pages — is available in the English PDF.
Referenced standards
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Related Standards
GB/T 3222.2-2022 — Acoustics - Description, measurement and assessment of environmental noise - Part 2: Determination of sound pressure levels
GB/T 33521.1-2017 — Mechanical vibration -- Ground-borne noise and vibration arising from rail systems -- Part 1: General guidance
GB/T 33521.32-2021 — Mechanical vibration - Ground-borne noise and vibration arising from rail systems - Part 32: Measurement of dynamic properties of the ground
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