ACI 421.2R-2010 Guide to Seismic Design of Punching Shear Reinforcement in Flat Plates《平板中抗冲切配筋的抗震设计指南》.pdf
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1、ACI 421.2R-10Reported by Joint ACI-ASCE Committee 421Guide to Seismic Design ofPunching Shear Reinforcementin Flat PlatesGuide to Seismic Design of Punching Shear Reinforcementin Flat PlatesFirst PrintingApril 2010ISBN 978-0-87031-374-5American Concrete InstituteAdvancing concrete knowledgeCopyright
2、 by the American Concrete Institute, Farmington Hills, MI. All rights reserved. This materialmay not be reproduced or copied, in whole or part, in any printed, mechanical, electronic, film, or otherdistribution and storage media, without the written consent of ACI.The technical committees responsibl
3、e for ACI committee reports and standards strive to avoid ambiguities,omissions, and errors in these documents. In spite of these efforts, the users of ACI documents occasionallyfind information or requirements that may be subject to more than one interpretation or may beincomplete or incorrect. Use
4、rs who have suggestions for the improvement of ACI documents arerequested to contact ACI. Proper use of this document includes periodically checking for errata atwww.concrete.org/committees/errata.asp for the most up-to-date revisions.ACI committee documents are intended for the use of individuals w
5、ho are competent to evaluate thesignificance and limitations of its content and recommendations and who will accept responsibility for theapplication of the material it contains. Individuals who use this publication in any way assume all risk andaccept total responsibility for the application and us
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7、r damages of any kind, including any special, indirect, incidental,or consequential damages, including without limitation, lost revenues or lost profits, which may resultfrom the use of this publication.It is the responsibility of the user of this document to establish health and safety practices ap
8、propriate tothe specific circumstances involved with its use. ACI does not make any representations with regard tohealth and safety issues and the use of this document. The user must determine the applicability of allregulatory limitations before applying the document and must comply with all applic
9、able laws and regulations,including but not limited to, United States Occupational Safety and Health Administration (OSHA) healthand safety standards.Order information: ACI documents are available in print, by download, on CD-ROM, through electronicsubscription, or reprint and may be obtained by con
10、tacting ACI.Most ACI standards and committee reports are gathered together in the annually revised ACI Manual ofConcrete Practice (MCP).American Concrete Institute38800 Country Club DriveFarmington Hills, MI 48331U.S.A.Phone: 248-848-3700Fax: 248-848-3701www.concrete.orgACI 421.2R-10 supersedes ACI
11、421.2R-07 and was adopted and published April 2010.Copyright 2010, American Concrete Institute.All rights reserved including rights of reproduction and use in any form or by anymeans, including the making of copies by any photo process, or by electronic ormechanical device, printed, written, or oral
12、, or recording for sound or visual reproduc-tion or for use in any knowledge or retrieval system or device, unless permission inwriting is obtained from the copyright proprietors.421.2R-1ACI Committee Reports, Guides, Manuals, and Commentariesare intended for guidance in planning, designing, executi
13、ng,and inspecting construction. This document is intended for theuse of individuals who are competent to evaluate thesignificance and limitations of its content and recommendationsand who will accept responsibility for the application of thematerial it contains. The American Concrete Institute discl
14、aimsany and all responsibility for the stated principles. The Instituteshall not be liable for any loss or damage arising therefrom.Reference to this document shall not be made in contractdocuments. If items found in this document are desired by theArchitect/Engineer to be a part of the contract doc
15、uments, theyshall be restated in mandatory language for incorporation bythe Architect/Engineer.Guide to Seismic Design of Punching Shear Reinforcement in Flat PlatesReported by Joint ACI-ASCE Committee 421ACI 421.2R-10During an earthquake, the unbalanced moments transferred at flat plate-column conn
16、ections can produce significant shear stresses that increasethe vulnerability of these connections to brittle punching shear failure. Thisguide provides recommendations for designing flat plate-column connectionswith sufficient ductility to withstand lateral drift without punching shearfailure or lo
17、ss of moment transfer capacity. This guide treats reinforcedconcrete flat plates with or without post-tensioning.Keywords: ductility; flat plate; post-tensioning; punching shear; seismicdesign; shear reinforcement; stud shear reinforcement.CONTENTSChapter 1Introduction, p. 421.2R-21.1General1.2Scope
18、1.3Objective1.4RemarksChapter 2Notation and definitions, p. 421.2R-32.1Notation2.2DefinitionsChapter 3Lateral story drift, p. 421.2R-53.1Lateral-force-resisting systems3.2Limits on story drift ratio3.3Effects of gravity loads on story drift capacity3.4Design recommendations for flat plates with andw
19、ithout shear reinforcementChapter 4Minimum shear and integrity reinforcements in flat plates, p. 421.2R-7Simon J. Brown Amin Ghali*James S. Lai Edward G. NawyPinaki R. Chakrabarti Hershell Gill Mark D. Marvin Eugenio M. SantiagoWilliam L. Gamble*Neil L. Hammill Sami Hanna Megally*Thomas C. Schaeffer
20、Ramez Botros Gayed*Theodor Krauthammer Michael C. Mota Stanley C. Woodson*Member of the subcommittee that prepared this guide.The committee would like to thank Frieder Seible for his contribution to this guide.Mahmoud E. KamaraChair421.2R-2 ACI COMMITTEE REPORTChapter 5Assessment of ductility, p. 42
21、1.2R-8Chapter 6Unbalanced design moment,p. 421.2R-96.1Frame analysis6.2Simplified elastic analysis6.3Upper limit for MuChapter 7Design of shear reinforcement,p. 421.2R-117.1Strength design7.2Summary of design steps7.3ACI 318 provisionsChapter 8Post-tensioned flat plates,p. 421.2R-138.1General8.2Sign
22、 convention8.3Post-tensioning effects8.4Effective compressive stress fpc8.5Extension of punching shear design procedure topost-tensioned flat plates8.6Research on post-tensioned flat platesChapter 9References, p. 421.2R-179.1Referenced standards and reports9.2Cited referencesAppendix AVerification o
23、f proposed minimum amount of shear reinforcement for earthquake-resistant flat plate-column connections,p. 421.2R-18Appendix BVerification of upper limit to unbalanced moment to be used in punching shear design, p. 421.2R-18Appendix CNotes on properties of shear-critical section, p. 421.2R-20C.1Seco
24、nd moments of areaC.2Equations for vAppendix DDesign examples, p. 421.2R-21D.1GeneralD.2Example 1: Interior flat plate-column connectionD.3Example 2: Edge flat plate-column connectionD.4Example 3: Corner flat plate-column connectionD.5Example 4: Use of stirrupsInterior flat plate-column connectionD.
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- ACI4212R2010GUIDETOSEISMICDESIGNOFPUNCHINGSHEARREINFORCEMENTINFLATPLATES 平板 中抗冲切配筋 抗震 设计 指南 PDF
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