GB/T 33521.32-2021 English PDF

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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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GB/T 33521.32-2021	904	Add to Cart	7 days	Mechanical vibration - Ground-borne noise and vibration arising from rail systems - Part 32: Measurement of dynamic properties of the ground	Valid

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Basic data

Standard ID: GB/T 33521.32-2021 (GB/T33521.32-2021)
Description (Translated English): Mechanical vibration - Ground-borne noise and vibration arising from rail systems - Part 32: Measurement of dynamic properties of the ground
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J04
Word Count Estimation: 50,530
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

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

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Mechanical vibration - Ground-borne noise and vibration arising from rail systems - Part 32.Measurement of dynamic properties of the ground ICS 17.160 J04 National Standards of People's Republic of China Produced by mechanical vibrating track system Ground-induced structural noise and ground-borne vibration Part 32.Dynamic performance measurement of the earth (ISO /T S14837-32.2015, IDT) Released on 2021-08-20 2022-03-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Table of contents

Foreword Ⅲ Introduction Ⅳ 1 Scope 1 2 Normative references 1 3 Symbol 1 4 Propagation of ground-induced structural noise and ground-borne vibration 3 4.1 Overview 3 4.2 Ground-induced structural noise and ground-borne vibration ---frequency influence 3 5 Parameters of medium wave propagation in the earth 3 5.1 Overview 3 5.2 Fundamental wave propagation parameters 4 5.3 Material loss and nonlinearity 7 5.4 Geometry effects, stratification and lateral variability of the earth 10 5.5 Near Field Effect 11 5.6 Anisotropy 11 5.7 The influence of groundwater---two-phase geotechnical materials 11 6 Parameter estimation and measurement methods 12 6.1 Earth stratification and classification. borehole histogram and seismic survey 12 6.2 Soil and Rock 13 6.3 Empirical estimation method based on index parameters 13 6.3.1 Overview 13 6.3.2 Effective (volume) mass density 13 6.3.3 Wave velocity and elastic shear modulus 13 6.3.4 Nonlinearity and material loss factor 15 6.4 Indirect measurement based on in-situ penetration test of rock and soil 19 6.4.1 Overview 19 6.4.2 Cone penetration test 19 6.4.3 Standard penetration test 19 6.5 Direct in-situ measurement of dynamic parameters of the earth 20 6.5.1 Overview 20 6.5.2 Surface wave measurement 23 6.5.3 Lower hole (and upper hole) measurement---Seismic CPT (S-CPT) 26 6.5.4 Cross-hole measurement 29 6.5.5 Other measurements---refraction, multi-channel P-wave and S-wave reflection, resistivity 31 6.5.6 Other in-situ methods 31 6.6 Laboratory measurement of dynamic parameters of the earth 32 6.6.1 Overview 32 6.6.2 Piezoelectric measurement 32 6.6.3 Resonance column test 34 6.6.4 Cyclic triaxial, DSS and torsional shear test 35 7 Strategies for determining geodetic parameters 35 7.1 Overview 35 7.2 Severity of ground-borne vibration and ground-induced structure noise 35 7.3 Parameter estimation of available information 35 7.4 Summary of in-situ measurement and laboratory measurement 35 7.5 Direct measurement of vibration and noise propagation as an alternative to measuring the dynamic performance of the earth and using computational models 36 Appendix A (informative appendix) Abbreviations used in this section 37 Reference 38

Foreword

GB/T 33521 "Ground-induced structural noise and ground-borne vibration generated by mechanical vibration track systems" has been or planned to publish the following part. ---Part 1.General Provisions; ---Part 31.On-site measurement guidelines for human exposure evaluation in buildings; ---Part 32.Dynamic performance measurement of the earth. This part is part 32 of GB/T 33521. This section was drafted in accordance with the rules given in GB/T 1.1-2009. The translation method used in this part is equivalent to ISO /T S14837-32.2015 "Ground-induced structural noise generated by mechanical vibration track system" Sound and ground-borne vibration. Part 32.Measurement of the dynamic properties of the earth." Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents. This part is proposed and managed by the National Mechanical Vibration, Shock and Condition Monitoring Standardization Technical Committee (SAC/TC53). Drafting organizations of this section. China Railway Research Institute Group Co., Ltd. Railway Construction Research Institute, Tongji University, Tsinghua University, China Railway Dao Science Research Institute Group Co., Ltd. Energy Conservation, Environmental Protection, Labor and Sanitation Research Institute, Zhengzhou Machinery Research Institute Co., Ltd. The main drafters of this section. Yang Yiqian, Yin Jing, Luo Yanyun, Wang Wei, Wang Zonggang, Liu Penghui, Meng Xin, Wang Yiqian, Sun Chenglong, Zhou Zheng, Zhao Jianye and Ma Weiping.

Introduction

In order to solve the problem of noise and vibration generated by the track system and propagated through the transmission path between the vibration source and the receiving position of the building, it is necessary to obtain Take the noise and vibration transfer function of the earth. To this end, it is necessary to understand the geological characteristics and bedding structure that affect the transfer. Generally speaking, in order to estimate These parameter characteristics require testing or other methods. For this purpose, this section specifies the measurement of relevant geodetic parameters. Try and estimate methods. Chapter 4 of this part provides an overview of ground-induced structural noise and ground-borne vibration. After this is the main content of this part, it is divided into two parts point. Chapter 5 defines the relevant dynamic parameters of the earth, describes the correlation between these parameters and the basic physics relationship with wave propagation. Chapter 6 gives the methods for determining these parameters. 6.3 gives a simple empirical correction based on traditional geotechnical engineering and engineering geological index parameters Estimation method; 6.4 gives the method of indirect measurement from the field penetration test data of rock and soil; 6.5 and 6.6 give more accurate direct on-site original Bit and laboratory methods to test these parameters. Produced by mechanical vibrating track system Ground-induced structural noise and ground-borne vibration Part 32.Dynamic performance measurement of the earth

1 Scope

This part of GB/T 33521 provides the ground between the track system and the foundation of adjacent buildings (i.e. ground-induced structural noise and ground Guidelines and methods for the dynamic performance measurement of the propagation medium that transmits vibration. The purpose is to determine the parameters of the earth system in order to reliably predict the noise And vibration propagation, designing track systems and foundations that meet the requirements of noise and vibration, planning countermeasures, and verifying design methods.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 33521.1-2017 Ground-induced structure noise and ground-transmitted vibration produced by mechanical vibrating track system Part 1.General (ISO 14837-1.2005, IDT)

3 symbols

The following symbols apply to this part of GB/T 33521. Note. See Appendix A for abbreviations summary. B. The dimensionless constant in the formula of shear modulus (Gmax) D and loss-related distance attenuation factor d wave propagation distance Emax Young's modulus, low strain dynamic value e void ratio, e=φ/(1-φ) f frequency G* complex shear modulus Gmax shear modulus, low strain dynamic value Gsec secant shear modulus, dynamic value Ip Plasticity Index Kmax bulk modulus, low strain dynamic value k* complex wave number M * complex confinement modulus Mmax confinement modulus, low strain dynamic value Corrected number of hammer strokes in N60 standard penetration test (SPT) n The stress index in the shear modulus (Gmax) formula P vibration power flux pa reference stress (pressure), pa=100kPa Q material quality factor ......

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