ISO/TS TECHNICAL SPECIFICATION 14837-32 Firstedition 2015-12-15 Mechanical vibration Ground. borne noise and vibration arising from rail systems - Part 32: Measurement of dynamic properties of the ground Vibrations mécaniques - Vibrations et bruits initiés au sol dus a des lignesferroviaires Partie 32: Mesurage des propriétés dynamiques du sol Reference number IS0/TS14837-32:2015(E) ISO @ IS0 2015 Copyright International Organization for Standardizatior Not for F IS0/TS14837-32:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS02015,PublishedinSwitzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org @ IS0 2015 - All rights reserved rds Bodies IS0/TS14837-32:2015(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. .1 2 Normative references ...1. 3 Symbols 4 Transmission of ground-borne noise and vibration ..3 4.1 General .3 4.2 Ground-borne noise versus vibration- Effectoffrequency ..4 5 Parameters for wave propagation in the ground. ..4 5.1 General ..4 5.2 Fundamental wave propagation parameters. ..4 5.3 Material loss and non-linearity .9 5.4 Geometry effects, stratification and lateral variability of the ground .13 5.5 Nearfield effects .15 5.6 Anisotropy .15 5.7 Ground water effects - Ground materials as a two-phase medium ..16 6 Methods for parameter estimation and measurement .16 6.1 Stratification and classification of the ground: Boring logs and seismic investigations ....16 6.2 Soils versus rock. 17 6.3 Empirical estimation methods based on index parameters .17 6.3.1 General .17 6.3.2 Effective (bulk) mass density.. ..18 6.3.3 Wave speeds and elastic shear modulus .18 6.3.4 Non-linearity and material loss factor 6.4 Indirect determination from geotechnical in-situ penetration tests 25 6.4.1 General 25 6.4.2 Cone penetration test .26 6.4.3 Standard penetration test .26 6.5 Direct in-situ measurement of dynamic ground parameters .27 6.5.1 General. 27 6.5.2 Surface wave measurements 30 6.5.3 Down-hole (and up-hole) measurements - Seismic CPT (S-CPT) .33 6.5.4 Cross-hole measurements .36 6.5.5 Other measurements - Refraction and multi-channel p- and s-wave reflection, resistivity. .39 6.5.6 Other in-situ methods .40 6.6 Laboratory measurement of dynamic ground parameters .40 6.6.1 General ..40 6.6.2 Piezo measurements .41 6.6.3 Resonant column testing .43 6.6.4 Cyclic triaxial, DsS and torsional shear testing ..44 7 Strategy for ground parameter determination .44 7.1 General .44 7.2 Expected severity of ground-borne vibration and noise ..4 7.3 Parameter estimation from available information ..44 7.4 Summary of in-situ measurements versus laboratory measurements. ..45 7.5 Direct measurement of vibration and noise propagation as an alternative to measuring dynamic properties and use of calculation models. ..45 Annex A (informative) Abbreviations used in this part of IS0 14837 ..47 Bibliography .48 Copyrintnteratonal SraizAl rights reserved iii :49:41 MST