ISO 28842-2013 Guidelines for simplified design of reinforced concrete bridges《钢筋混凝土简化设计指南》.pdf
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1、 Reference number ISO 28842:2013(E) ISO 2013INTERNATIONAL STANDARD ISO 28842 First edition 2013-06-15 Guidelines for the simplified design of reinforced concrete bridges Lignes directrices pour la conception simplifie des ponts en bton arm ISO 28842:2013(E) COPYRIGHT PROTECTED DOCUMENT ISO 2013 All
2、rights reserved. Unless otherwise specified, no part of this publication may be reproduced 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
3、 the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2013 All rights reservedISO 28842:2013(E) ISO 2013 All rights reserved iiiContents Page Foreword . v Introductio
4、n vi 1 Scope 1 2 Normative references 1 3 Terms and definitions . 2 4 Symbols and abbreviated terms 13 5 Design and construction procedure 18 5.1 Procedure . 18 5.2 Design documentation 20 6 General Guides 20 6.1 Limitations . 20 6.2 Limit states . 23 6.3 Ultimate limit state design format 25 6.4 Se
5、rviceability limit state design format . 26 7 Structural systems and layout . 26 7.1 Description of the components of the structure 26 7.2 General program 27 7.3 Structural layout 28 7.4 Feasibility under the guidelines . 29 8 Actions (Loads) . 30 8.1 General . 30 8.2 Dead loads . 30 8.3 Live loads
6、. 31 8.4 Longitudinal forces . 33 8.5 Earth pressure . 33 8.6 Wind loads . 34 8.7 Earthquake inertial forces 34 8.8 Thermal Forces 44 8.9 Load combinations 46 9 Design requirements . 46 9.1 Scope 46 9.2 Additional requirements . 46 9.3 Materials for structural concrete . 47 9.4 Concrete Mixture Prop
7、ortioning 48 9.5 Development length, lap splicing and anchorage of reinforcement 57 9.6 Limits for longitudinal reinforcement 59 9.7 Minimum amounts of transverse reinforcement 62 10 Superstructure . 66 10.1 Strength of members subjected to flexural moments . 66 10.2 Strength of members subjected to
8、 shear stresses 72 10.3 Decks 76 10.4 Solid slabs supported on girders, beams, or joists . 83 10.5 Girders, beams and joists 103 10.6 Railings . 119 11 Substructure 120 11.1 Girders that are part of a frame 120 ISO 28842:2013(E) iv ISO 2013 All rights reserved11.2 Strength of members subjected to ax
9、ial loads with or without flexure . 128 11.3 Torsion 132 11.4 Bearing strength 133 11.5 Columns and Piers 133 11.6 Concrete walls . 142 12 Foundations . 150 12.1 Foundation type and capacity 150 12.2 Subsurface exploration and testing programs . 151 12.3 Dimensioning of the foundation elements 151 1
10、2.4 Footings 151 12.5 Foundation mats 153 12.6 Footings on piles . 153 12.7 Foundation beams . 154 12.8 Retaining Walls 154 13 Lateral load resisting system . 163 13.1 General 163 13.2 Specified lateral forces . 164 13.3 Lateral force resisting structural system 164 13.4 Minimum amount of structural
11、 concrete walls . 164 13.5 Special reinforcement details for seismic zones . 165 14 Bearings 176 14.1 General 176 14.2 Multiple roller bearings . 176 14.3 Elastomeric bearings 177 14.4 Anchorage 179 14.5 Design forces for supporting structure . 179 Annex A (normative) Equivalent equations for materi
12、al factors 181 Annex B (normative) Beam Deflection 186 Bibliography 187 ISO 28842:2013(E) ISO 2013 All rights reserved vForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International St
13、andards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also
14、 take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. I
15、n particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directives Attention is drawn to the possibility that some of the elements of
16、this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received. www.i
17、so.org/patents Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. The committee responsible for this document is ISO/TC 71, Concrete, reinforced concrete and pre-stressed concrete, Subcommittee SC 5, Simplified design standa
18、rd for concrete structures. ISO 28842:2013(E) vi ISO 2013 All rights reservedIntroduction The aim of this International Standard is to provide rules for the design and construction of relatively short span concrete bridges. This International Standard is developed for countries that do not have exis
19、ting national standards on this subject and to offer to local regulatory authorities an alternative for the design of relatively small bridges that abound in urban overpasses and over creeks and rivers everywhere. This International Standard shall not be used in place of a national standard unless s
20、pecifically considered and accepted by the national standards body or other appropriate regulatory organization. The design rules are based in simplified worldwide-accepted strength models. This International Standard is self-contained; therefore, loads, simplified analysis procedures and design spe
21、cifications are included, as well as minimum acceptable construction practice guidelines. The minimum dimensional guidelines contained in this International Standard are intended to account for undesirable side effects that will require more sophisticated analysis and design procedures. Material and
22、 construction guidelines are aimed at site-mixed concrete as well as ready-mixed concrete, and steel of the minimum available strength grades. The earthquake resistance guidelines are included to account for the numerous regions of the world which lie in earthquake prone areas. The earthquake resist
23、ance for zones with high seismic hazard is based upon the employment of structural concrete walls (shear walls) that limit the lateral deformations of the structure and provide for its lateral strength, in place of piers or frames that can be used in zones with intermediate, low or no significant ea
24、rthquake hazard. This International Standard contains guidelines that can be modified by the national standards body due to local design and construction requirements and practices. These guidelines that can be modified are included using “boxed values“. The authorities in each member country are ex
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- ISO288422013GUIDELINESFORSIMPLIFIEDDESIGNOFREINFORCEDCONCRETEBRIDGES 钢筋混凝土 简化 设计 指南 PDF
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