ISO INTERNATIONAL STANDARD 11031 First edition 2016-08-01 Cranes Principles for seismically resistant design Appareils de levage a charge suspendue - Principes pour une conceptionresistantealasismicite Reference number IS0 11031:2016(E) (so @ IS0 2016 IS0 11031:2016(E) COPYRIGHT PROTECTED DOCUMENT @ IS0 2016, Published in Switzerland 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.+4122 749 0111 Fax +4122 749 09 47 copyright@iso.org www.iso.org Copyright lima @ IS0 2016 - All rights reserved ional Organizationfor Standardizatior IS0 11031:2016(E) Contents Page Foreword ..iv Introduction. .V 1 Scope. ..1 2 Normative references ..1 3 Symbols ..1 4 Seismic design methods 2 5 Seismic design by Modified Seismic Coefficient Method 13 5.1 General 1.3 5.2 Calculation of horizontal seismic design coefficient, Kh .3.3 5.2.1 General 5.2.2 Determination of normalized basic acceleration, Abg ..3 5.2.3 Determination of subsoil amplification factor, β2 5.2.4 Determination of acceleration response factor, β3 ..5 5.3 Calculation of vertical seismic design coefficient, Ky .8 5.4 Calculation of seismic design loads .8 5.4.1 Calculation of seismic accelerations .8 5.4.2 Calculation of seismic forces. .9 6 Seismic design based on Maximum Response Spectrum Method .9 6.1 General .9 6.2 Calculation procedure for total seismic response (TsR) 10 Combinations of seismic and non-seismic effects. ..11 7.1 General .11 7.2 Proof of static strength: load combinations in accordance with IS0 8686-1 .11 7.3 Proof of static strength: load combination according to SRsS Method 12 7.4 Proofofglobalstability .12 7.5 Proof of competence for crane structures. ..13 Annex A (informative) Flow chart of seismic design ..14 Annex B (informative) Design accelerations and seismic zones ..15 Annex C (informative) Information about Maximum Response Method ..32 Annex D (informative) Time History Response Method and a comparison of different seismic methods available ..35 Annex E (informative) Relation between basic acceleration, Mercalli and Richter scales ...38 Annex F (informative) Vertical seismic intensity ..39 Bibliography .40 ational orgzISMSaharaizAlh rights reserved ii