ISO 4354-2009 Wind actions on structures《风力对建筑物的作用》.pdf
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1、 Reference number ISO 4354:2009(E) ISO 2009INTERNATIONAL STANDARD ISO 4354 Second edition 2009-06-01 Wind actions on structures Actions du vent sur les structures ISO 4354:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may b
2、e printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts
3、 no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the f
4、ile is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2009 All rights reserved. Unless otherwise specified, no part of this publication may be repr
5、oduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22
6、749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2009 All rights reservedISO 4354:2009(E) ISO 2009 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references1 3 Symbols2 4 Wind actions 2 5 Wind pressure3 6 Wi
7、nd force 3 7 Site peak dynamic pressure.4 8 Exposure factor .4 9 Pressure and force coefficients.4 10 Dynamic response factor5 11 Criterion for aeroelastic instability 5 12 Methods of determination of wind loads 5 Annex A (normative) Mean velocity method7 Annex B (informative) Determination of refer
8、ence wind speed .9 Annex C (informative) Determination of exposure factors .11 Annex D (informative) Aerodynamic pressure and force coefficients 22 Annex E (informative) Dynamic response factors.40 Annex F (informative) Structures subject to critical excitation vortex resonance and aeroelastic insta
9、bility59 Annex G (informative) Mode combinations62 Annex H (informative) Wind tunnel testing 64 Annex I (informative) Computation-based methods .65 Annex J (informative) Reliability considerations.66 Bibliography67 ISO 4354:2009(E) iv ISO 2009 All rights reservedForeword ISO (the International Organ
10、ization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been establish
11、ed has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
12、 International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Pu
13、blication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such paten
14、t rights. ISO 4354 was prepared by Technical Committee ISO/TC 98, Bases for design of structures, Subcommittee SC 3, Loads, forces and other actions. This second edition cancels and replaces the first edition (ISO 4354:1997), which been technically revised. ISO 4354:2009(E) ISO 2009 All rights reser
15、ved vIntroduction This International Standard is intended for use by countries without an adequate wind loading standard and as a bridge between existing International Standards. The data in the annexes, with the exception of Annex A, whilst formally only informative, and limited to the most common
16、usage, are intended for use within the definitions in this International Standard. Additional data will be provided from time to time in ISO Technical Reports for use on the same basis. INTERNATIONAL STANDARD ISO 4354:2009(E) ISO 2009 All rights reserved 1Wind actions on structures 1 Scope This Inte
17、rnational Standard describes the actions of wind on structures and specifies methods of calculating characteristic values of wind loads for use in designing buildings, towers, chimneys, bridges and other structures, as well as their components and appendages. The loads are suitable for use in conjun
18、ction with ISO 2394 and other International Standards concerned with wind loads. In particular, this International Standard facilitates the conversion between peak and mean wind speed methodologies and covers the three main storm types, synoptic winds, thunderstorms and tropical cyclones (hurricanes
19、 and typhoons). This International Standard provides the basic methods from which to determine wind loading analytically through the determination of design pressures or orthogonal along-wind and cross-wind forces and moments for structures of simple shape and wind directionality effects, and throug
20、h wind tunnel or computational determinations of pressure, forces and moments for structures with complex shapes and wind directionality effects resulting in complex combinations of forces and moments. Structures of unusual nature, size or complexity (e.g. tall buildings, long span bridges, large sp
21、an roofs, guyed masts, offshore and moving structures) typically require a special engineering study; some guidance is given on the limitations of this International Standard in these cases. Two methods of analytical determination of design wind loads are given in this International Standard, one ba
22、sed on a peak velocity and the other on a mean velocity. Both methods can be used when dynamic response effects are important, and where they are not important only the peak-velocity method is used in this International Standard by taking the peak dynamic response factor to be unity. To simplify pre
23、sentation, the method based on the peak velocity is given in the main body of this International Standard and the method based on the mean velocity is given in a normative Annex A. 2 Normative references The following referenced documents are indispensable for the application of this document. For d
24、ated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 2394, General principles on reliability for structures ISO 4354:2009(E) 2 ISO 2009 All rights reserved3 Symbols Symbol Term Unit ATributary o
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