ACI 562-2016 Code Requirements for Assessment Repair and Rehabilitation of Existing Concrete Structures and Commentary (Incorporates Errata November 9 2017).pdf

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1、ACI 562-16Code Requirements for Assessment, Repair, and Rehabilitation of Existing Concrete Structures and CommentaryReported by ACI Committee 562An ACI Standard First PrintingJune 2016ISBN: 978-1-942727-90-3Code Requirements for Assessment, Repair, and Rehabilitation of Existing Concrete Structures

2、 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 ACI.The techn

3、ical committees responsible 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 occasionally find information or requirements that may be subject to more than one interpretation or may be

4、 incomplete or incorrect. Users who have suggestions for the improvement of ACI documents are requested to contact ACI via the errata website at http:/concrete.org/Publications/DocumentErrata.aspx. Proper use of this document includes periodically checking for errata for the most up-to-date revision

5、s.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 in any way assu

6、me all risk and accept total responsibility for the application and use of this information.All information in this publication is provided “as is” without warranty of any kind, either express or implied, including but not limited to, the implied warranties of merchantability, fitness for a particul

7、ar purpose or non-infringement.ACI and its members disclaim liability for damages of any kind, including any special, indirect, incidental, or consequential damages, including without limitation, lost revenues or lost profits, which may result from the use of this publication.It is the responsibilit

8、y of the user of this document to establish health and safety practices appropriate to the specific circumstances involved with its use. ACI does not make any representations with regard to health and safety issues and the use of this document. The user must determine the applicability of all regula

9、tory limitations before applying the document and must comply with all applicable laws and regulations, including but not limited to, United States Occupational Safety and Health Administration (OSHA) health and safety standards.Participation by governmental representatives in the work of the Americ

10、an Concrete Institute and in the development of Institute standards does not constitute governmental endorsement of ACI or the standards that it develops.Order information: ACI documents are available in print, by download, on CD-ROM, through electronic subscription, or reprint and may be obtained b

11、y 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 562-16Code Requirem

12、ents for Assessment, Repair, and Rehabilitation of Existing Concrete Structures (ACI 562-16) and CommentaryAn ACI StandardReported by ACI Committee 562Keith E. Kesner, Chair Kevin Conroy, SecretaryVoting MembersJames Peter BarlowF. Michael BartlettRandal M. BeardEric L. EdelsonGarth J. FallisPaul Ga

13、udetteFred 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. PostonSubocmmittee MembersJared BrewKip GattoAnton Gue

14、orguievGaur JohnsonPatrick D. MartinJ. Gustavo TumialanDavid W. WhitmoreACI 562-16, “Code Requirements for Assessment, Repair, and Rehabilitation of Existing Concrete Structures” was developed to provide design professionals involved in the assessment of existing concrete structures a code for the a

15、ssessment 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 applicable, nonbuilding structures.

16、ACI 562-16 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 rehabilitation of existing concret

17、e 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 562-16 supersedes ACI 562-13, was adopted June 1, 2016, and was published June 2016.Copyrigh

18、t 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 for sound or visual reproduc-tion or for u

19、se 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 USING THIS CODE WITH THE INTERNATIONAL

20、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, p. 264.6Conditions of deterioration, fau

21、lty 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. 305.2Load factors and load combinations

22、, 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 ANALYSIS, p. 356.1Structural assessment,

23、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 for repair design, p. 436.8Strength evalu

24、ation 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 considerations, p. 507.7Repair using supplem

25、ental 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 reinforcement and metallic embedments, p.

26、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. 6710.2Inspection, p. 6710.3Testing of repair mat

27、erials, 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 structural damage, p. 80A.5Conditions o

28、f 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. 84A.9Change of occupancy, p. 85Key cha

29、nges from ACI 562-13 to ACI 562-16, p. 86American Concrete Institute Copyrighted Materialwww.concrete.org2 CODE REQUIREMENTS FOR ASSESSMENT, REPAIR, AND REHABILITATION OF EXISTING CONCRETE STRUCTURES (ACI 562-16)PREFACEThis code provides minimum requirements for assessment, repair, and rehabilitatio

30、n 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 the code governing existing structures of a

31、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, design and construction, or implementation

32、 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 providing minimum requirements for assessment

33、, and design and construction of repair and rehabilitation of existing structural concrete. ACI 318 provides minimum requirements for the materials, design, and detailing of structural concrete buildings and, where applicable, nonbuilding struc-tures prior to issuance of a letter of occupancy or pri

34、or to the legally defined declaration of an existing structure and for new construction within existing structures where noted herein.Key changes from ACI 562-13 to ACI 562-16 include: revisions to definitions used in the code to bring this document into conformance with the IEBC and other standards

35、 for existing structures; adding specific criteria requirements for assessment 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 when using this code as a stand-alone code; and re-

36、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, AND REHABILITATION OF EXISTING CONCRETE STRUCTU

37、RES (ACI 562-16) 3THIS PAGE INTENTIONALLY LEFT BLANK.American Concrete Institute Copyrighted Materialwww.concrete.org4 CODE REQUIREMENTS FOR ASSESSMENT, REPAIR, AND REHABILITATION OF EXISTING CONCRETE STRUCTURES (ACI 562-16)CHAPTER 1GENERAL REQUIREMENTS1.1General 1.1.1 ACI 562, “Code Requirements fo

38、r 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 International Existing Building Code (IEBC), as pa

39、rt 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 structural concrete members, systems, and buildings.1.

40、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 being used. The licensed design profes-sional for the

41、 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 structures. Throughout this code, the term “structure” me

42、ans 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 this code is used as a supplement to the IEBC for c

43、oncrete 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 the safety of existing structures through assessme

44、nt 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 rehabilitation.Unless prohibited by the jurisdictional author

45、ity, 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-deterio-rated state is permitted based on material

46、 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 licensed design professional may consider using 4.5.2 or A

47、.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 demand exceeds the original building code demand or

48、 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 this code.American Concrete Institute Copyrighted Mat

49、erialwww.concrete.orgCODE COMMENTARYCODE REQUIREMENTS FOR ASSESSMENT, REPAIR, AND REHABILITATION OF EXISTING CONCRETE STRUCTURES (ACI 562-16) 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 that regulates existing buildings or structures.1.2.2 T