ACI 562M-2016 Code Requirements for Assessment Repair and Rehabilitation of Existing Concrete Structures and Commentary (metric).pdf

1、ACI 562M-16Code Requirements for Assessment, Repair, and Rehabilitation of Existing Concrete Structures and Commentary (metric)Reported by ACI Committee 562An ACI Standard First PrintingNovember 2016ISBN: 978-1-942727-43-9Code Requirements for Assessment, Repair, and Rehabilitation of Existing Concr

2、ete Structures and CommentaryCopyright by the American Concrete Institute, Farmington Hills, MI. All rights reserved. This material may not be reproduced or copied, in whole or part, in any printed, mechanical, electronic, film, or other distribution and storage media, without the written consent of

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5、-date revisions.ACI committee documents are intended for the use of individuals who are competent to evaluate the significance and limitations of its content and recommendations and who will accept responsibility for the application of the material it contains. Individuals who use this publication i

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11、 be obtained by contacting ACI.Most ACI standards and committee reports are gathered together in the annually revised ACI Manual of Concrete Practice (MCP).American Concrete Institute38800 Country Club DriveFarmington Hills, MI 48331Phone: +1.248.848.3700Fax: +1.248.848.3701www.concrete.orgACI 562M-

12、16Code Requirements for Assessment, Repair, and Rehabilitation of Existing Concrete Structures (ACI 562M-16) and CommentaryAn ACI StandardReported by ACI Committee 562Keith E. Kesner, Chair Kevin Conroy, SecretaryVoting MembersTarek AlkhrdajiJames Peter BarlowF. Michael BartlettRandal M. BeardEric L

13、. EdelsonGarth J. FallisPaul GaudetteFred R. GoodwinRobert F. JoyceLawrence F. KahnPaul L. KelleyCarl J. LaroscheJohn S. LundMarjorie M. LynchTracy D. MarcotteAntonio NanniJay H. PaulEugenio M. SantiagoConstadino SirakisGene R. StevensConsulting MembersPeter Emmons Randall W. PostonSubcommittee Memb

14、ersJared BreweKip GattoAnton GueorguievGaur JohnsonPatrick D. MartinJ. Gustavo TumialanDavid W. WhitmoreACI 562M-16, “Code Requirements for Assessment, Repair, and Rehabilitation of Existing Concrete Structures” was developed to provide design professionals involved in the assessment of existing con

15、crete structures a code for the assessment of the damage and deterioration, and the design of appropriate repair and rehabili-tation strategies. The code provides minimum requirements for assessment, repair, and rehabilitation of existing structural concrete buildings, members, systems and where app

16、licable, nonbuilding structures. ACI 562M-16 was specifically developed to work with the International Existing Building code (IEBC) or to be adopted as a stand-alone code.CONTENTSPREFACE, p. 3CHAPTER 1GENERAL REQUIREMENTS, p. 51.1General, p. 51.2Criteria for the assessment and design of repair and

17、rehabilitation of existing concrete structures, p. 61.3Applicability of this code, p. 81.4Administration, p. 101.5Responsibilities of the licensed design professional, p. 101.6Construction documents, p. 111.7Preliminary evaluation, p. 121ACI 562M-16 supersedes ACI 562M-13, was adopted June 1, 2016,

18、and was published November 2016.Copyright 2016, American Concrete Institute.All rights reserved including rights of reproduction and use in any form or by any means, including the making of copies by any photo process, or by electronic or mechanical device, printed, written, or oral, or recording fo

19、r sound or visual reproduc-tion or for use in any knowledge or retrieval system or device, unless permission in writing is obtained from the copyright proprietors.CHAPTER 2NOTATION AND DEFINITIONS, p. 142.1Notation, p. 142.2Definitions, p. 15CHAPTER 3REFERENCED STANDARDS, p. 22CHAPTER 4CRITERIA WHEN

20、 USING THIS CODE WITH THE INTERNATIONAL EXISTING BUILDING CODE (IEBC), p. 244.1General, p. 244.2Compliance method, p. 254.3Unsafe structural conditions, p. 254.4Substantial structural damage, p. 264.5Conditions of deterioration, faulty construction or damage less than substantial structural damage,

21、p. 264.6Conditions of deterioration, faulty construction, or damage less than substantial structural damage without strengthening, p. 284.7Additions, p. 284.8Alterations, p. 284.9Change of occupancy, p. 29CHAPTER 5LOADS, FACTORED LOAD COMBINATIONS, AND STRENGTH REDUCTION FACTORS, p. 305.1General, p.

22、 305.2Load factors and load combinations, p. 305.3Strength reduction factors for rehabilitation design, p. 315.4Strength reduction factors for assessment, p. 325.5Additional load combinations for structures rehabili-tated with external reinforcing systems, p. 32CHAPTER 6ASSESSMENT, EVALUATION, AND A

23、NALYSIS, p. 356.1Structural assessment, p. 356.2Investigation and structural evaluation, p. 356.3Material properties, p. 366.4Test methods to quantify material and member prop-erties, p. 396.5Structural analysis of existing structures, p. 426.6Structural serviceability, p. 436.7Structural analysis f

24、or repair design, p. 436.8Strength evaluation by load testing, p. 446.9Recommendations, p. 44CHAPTER 7DESIGN OF STRUCTURAL REPAIRS, p. 457.1General, p. 457.2Strength and serviceability, p. 457.3Behavior of repaired systems, p. 457.4Interface bond, p. 467.5Materials, p. 497.6Design and detailing cons

25、iderations, p. 507.7Repair using supplemental post-tensioning, p. 537.8Repair using fiber-reinforced polymer (FRP) composites, p. 547.9Performance under fire and elevated temperatures, p. 56CHAPTER 8DURABILITY, p. 588.1General, p. 588.2Cover, p. 598.3Cracks, p. 608.4Corrosion and deterioration of re

26、inforcement and metallic embedments, p. 608.5Surface treatments and coatings, p. 63CHAPTER 9CONSTRUCTION, p. 649.1General, p. 649.2Stability and temporary shoring requirements, p. 649.3Temporary conditions, p. 669.4Environmental issues, p. 66CHAPTER 10QUALITY ASSURANCE, p. 6710.1General, p. 6710.2In

27、spection, p. 6710.3Testing of repair materials, p. 6910.4Construction observations, p. 70CHAPTER 11COMMENTARY REFERENCES, p. 71APPENDIX ACRITERIA WHEN USING THIS CODE AS A STAND-ALONE CODE, p. 78A.1General, p. 78A.2Design-basis code criteria, p. 78A.3Unsafe structural conditions, p. 79A.4Substantial

28、 structural damage, p. 80A.5Conditions of deterioration, faulty construction or damage less than substantial structural damage, p. 81A.6Conditions of deterioration, faulty construction, or damage less than substantial structural damage without strengthening, p. 84A.7Additions, p. 84A.8Alterations, p

29、. 84A.9Change of occupancy, p. 85Key changes from ACI 562M-13 to ACI 562M-16, p. 86American Concrete Institute Copyrighted Materialwww.concrete.org2 CODE REQUIREMENTS FOR ASSESSMENT, REPAIR, AND REHABILITATION OF EXISTING CONCRETE STRUCTURES (ACI 562M-16)PREFACEThis code provides minimum requirement

30、s for assessment, repair, and rehabilitation of existing structural concrete buildings, members, systems and where applicable, nonbuilding structures. This code was developed by an ANSI-approved consensus process. This code can supplement the International Existing Building Code (IEBC), supplement t

31、he code governing existing structures of a local jurisdictional authority, or act as a stand-alone code in a locality that has not adopted an existing-building code. When this code is used as a stand-alone code, Appendix A is used in place of Chapter 4.This code provides requirements for assessment,

32、 design and construction, or implementation of repairs and rehabilitation, including quality assurance requirements, for structural concrete in service. This code has no legal status unless it is adopted by the jurisdictional authority. Where the code has not been adopted, it serves as a standard pr

33、oviding minimum require-ments for assessment, and design and construction of repair and rehabilitation of existing structural concrete. ACI 318M provides minimum requirements for the materials, design, and detailing of structural concrete buildings and, where applicable, nonbuilding structures prior

34、 to issuance of a letter of occupancy or prior to the legally defined declaration of an existing struc-ture and for new construction within existing structures where noted herein.Key changes from ACI 562M-13 to ACI 562M-16 include: revisions to definitions used in the code to bring this document int

35、o conformance with the IEBC and other standards for existing structures; adding specific criteria requirements for assess-ment and design of repair and rehabilitation for varying levels of damage, deterioration, or faulty construction in Chapter 4 when using this code with IEBC and in Appendix A whe

36、n using this code as a stand-alone code; and re-organization and revision of Chapter 1 to address the amendments of Chapters 2 and 4. Technical changes are summarized at the end of this document.American Concrete Institute Copyrighted Materialwww.concrete.orgCODE REQUIREMENTS FOR ASSESSMENT, REPAIR,

37、 AND REHABILITATION OF EXISTING CONCRETE STRUCTURES (ACI 562M-16) 3THIS PAGE INTENTIONALLY LEFT BLANK.American Concrete Institute Copyrighted Materialwww.concrete.org4 CODE REQUIREMENTS FOR ASSESSMENT, REPAIR, AND REHABILITATION OF EXISTING CONCRETE STRUCTURES (ACI 562M-16)CHAPTER 1GENERAL REQUIREME

38、NTS1.1General 1.1.1 ACI 562M, “Code Requirements for Assessment, Repair, and Rehabilitation of Existing Concrete Structures,” is hereafter referred to as “this code.”1.1.2 ScopeThis code shall apply to assessment, repair, and rehabilitation of existing concrete structures as a code supplementing the

39、 International Existing Building Code (IEBC), as part of a locally adopted code governing existing buildings or structures, or as a stand-alone code for existing concrete structures.1.1.3 The intent of this code is to safeguard the public by providing minimum structural requirements for existing str

40、uctural concrete members, systems, and buildings.1.1.4 All references in this code to the licensed design professional shall be understood to mean persons who possess the knowledge, judgment and skills to interpret and properly use this code and are licensed in the jurisdiction where this code is be

41、ing used. The licensed design profes-sional for the project is responsible for and in charge of the assessment or rehabilitation design, or both.1.1CGeneral 1.1.2C This code defines assessment, design, construction and durability requirements for repair and rehabilitation of existing concrete struct

42、ures. Throughout this code, the term “structure” means an existing building, member, system, and, where applicable, nonbuilding structures where the construction is concrete or mixed construction with concrete and other materials.Chapter 4 provides assessment, repair, and rehabilitation criteria if

43、this code is used as a supplement to the IEBC for concrete members and systems.Appendix A provides assessment, repair, and rehabilita-tion criteria when this code is used as a stand-alone code in a jurisdiction without a code governing existing structures.1.1.3C The intent of this code is to address

44、 the safety of existing structures through assessment requirements that demonstrate an approximation of the structural reliability using demand-capacity ratio limits of Chapter 4 or Appendix A and, if necessary as determined by the assessment, increase the structural capacity by repair or rehabilita

45、tion.Unless prohibited by the jurisdictional authority, if an existing structure is shown to be unsafe in accordance with 4.3 or A.3, the structure should be rehabilitated using 4.3 or A.3.Using the demand-capacity ratio limits of 4.5.1 or A.5.1, repair of the existing structural concrete to its pre

46、-deterio-rated state is permitted based on material properties speci-fied in the original construction (per Chapter 6), and substan-tiated engineering principles of the original design. Where requirements of the original building code are appreciably changed in the current building code, the license

47、d design professional may consider using 4.5.2 or A.5.2.Beyond the restoration assessment requirements of 4.5.1 and 4.5.3 or A.5.1 and A.5.3, the structural reliability principles of 4.5.2 or A.5.2 are permitted. These alterna-tive requirements provide acceptable safety if the current building code

48、demand exceeds the original building code demand or if the regulations of the original building code provide an unacceptable level of structural reliability.1.1.4C The licensed design professional should exercise sound engineering knowledge, experience, and judgment when interpreting and applying th

49、is code.American Concrete Institute Copyrighted Materialwww.concrete.orgCODE COMMENTARYCODE REQUIREMENTS FOR ASSESSMENT, REPAIR, AND REHABILITATION OF EXISTING CONCRETE STRUCTURES (ACI 562M-16) 51.1.5 The requirements of this code are provided using strength design provisions for demands and capacities, unless otherwise noted.1.2Criteria for the assessment and design of repair and rehabilitation of existing concrete structures1.2.1 The “existing-building code” refers to the code adopted by a jurisdiction tha