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1、 ASCE Manuals and Reports on Engineering Practice No. 111Reliability-Based Design of Utility Pole StructuresPrepared by Reliability-Based Design Committee of the Structural Engineering Institute (SEI) of the American Society of Civil EngineersEdited by Habib J. DagherPublished by the American Societ

2、y of Civil EngineersLibrary of Congress Cataloging-in-Publication DataReliability-based design of utility pole structures : prepared by Reliability-Based Design Committee of the Structural Engineering Institute (SEI) of the American Society of Civil Engineers / edited by Habib J. Dagher.p. cm. (ASCE

3、 manuals and reports on engineering practice ; no. 111)ISBN 0-7844-0845-91. Structural engineeringHandbooks, manuals, etc. I. Dagher, Habib Joseph. II. Structural Engineering Institute. Reliability-Based Design Committee. III. Series. TA635.R45 2006624.1772dc22 2005037138Published by American Societ

4、y of Civil Engineers1801 Alexander Bell DriveReston, Virginia 20191www.pubs.asce.orgAny statements expressed in these materials are those of the individual authors and do not necessarily represent the views of ASCE, which takes no responsibility for any statement made herein. No reference made in th

5、is publication to any specic method, product, process, or service constitutes or implies an endorsement, recommendation, or warranty thereof by ASCE. The materials are for general information only and do not represent a standard of ASCE, nor are they intended as a reference in purchase specications,

6、 contracts, regulations, statutes, or any other legal document.ASCE makes no representation or warranty of any kind, whether express or implied, concerning the accuracy, completeness, suitability, or utility of any information, apparatus, product, or process discussed in this publication, and assume

7、s no liability therefore. This information should not be used without rst securing competent advice with respect to its suitability for any general or specic application. Anyone utilizing this information assumes all liability arising from such use, including but not limited to infringement of any p

8、atent or patents.ASCE and American Society of Civil EngineersRegistered in U.S. Patent and Trade-mark Ofce.Photocopies and reprints. You can obtain instant permission to photocopy ASCE publica-tions by using ASCEs online permission service (www.pubs.asce.org/authors/Rightslink-WelcomePage.html). Req

9、uests for 100 copies or more should be submitted to the Reprints Department, Publications Division, ASCE (address above); email: permissionsasce.org. A reprint order form can be found at www.pubs.asce.org/authors/reprints.htmlCopyright 2006 by the American Society of Civil Engineers.All Rights Reser

10、ved.ISBN 0784408459Manufactured in the United States of America.MANUALS AND REPORTS ON ENGINEERING PRACTICE(As developed by the ASCE Technical Procedures Committee, July 1930, and revised March 1935, February 1962, and April 1982.)A manual or report in this series consists of an orderly presentation

11、 of facts on a particular subject, supplemented by an analysis of limitations and applications of these facts. It contains information useful to the av-erage engineer in his everyday work, rather than the ndings that may be useful only occasionally or rarely. It is not in any sense a “standard,” how

12、ever; nor is it so elementary or so conclusive as to provide a “rule of thumb” for nonengineers.Furthermore, material in this series, in distinction from a paper (which expressed only one persons observations or opinions), is the work of a committee or group selected to assemble and express informat

13、ion on a specic topic. As often as practicable the committee is under the direction of one or more of the Technical Divisions and Councils, and the product evolved has been subjected to review by the Executive Committee of the Division or Council. As a step in the process of this review, proposed ma

14、n-uscripts are often brought before the members of the Technical Divisions and Councils for comment, which may serve as the basis for improve-ment. When published, each work shows the names of the committees by which it was compiled and indicates clearly the several processes through which it has pa

15、ssed in review, in order that its merit may be denitely understood.In February 1962 (and revised in April 1982) the Board of Direction voted to establish:A series entitled “Manuals and Reports on Engineering Practice,” to include the Manuals published and authorized to date, future Manuals of Profes

16、sional Practice, and Reports on Engineering Practice. All such Manual or Report material of the Society would have been refereed in a manner approved by the Board Committee on Publications and would be bound, with applicable discussion, in books similar to past Manuals. Numbering would be consecutiv

17、e and would be a continuation of present Manual numbers. In some cases of reports of joint committees, bypassing of Journal publications may be authorized.MANUALS AND REPORTS ON ENGINEERING PRACTICENo. Title13 Filtering Materials for Sewage Treatment Plants14 Accommodation of Utility Plant Within th

18、e Rights-of-Way of Urban Streets and Highways35 A List of Translations of Foreign Literature on Hydraulics40 Ground Water Management41 Plastic Design in Steel: A Guide and Commentary45 Consulting Engineering: A Guide for the Engagement of Engineering Services46 Pipeline Route Selection for Rural and

19、 Cross-Country Pipelines47 Selected Abstracts on Structural Applications of Plastics49 Urban Planning Guide50 Planning and Design Guidelines for Small Craft Harbors51 Survey of Current Structural Research52 Guide for the Design of Steel Transmission Towers53 Criteria for Maintenance of Multilane Hig

20、hways54 Sedimentation Engineering55 Guide to Employment Conditions for Civil Engineers57 Management, Operation and Maintenance of Irrigation and Drainage Systems59 Computer Pricing Practices60 Gravity Sanitary Sewer Design and Construction62 Existing Sewer Evaluation and Rehabilitation63 Structural

21、Plastics Design Manual64 Manual on Engineering Surveying65 Construction Cost Control66 Structural Plastics Selection Manual67 Wind Tunnel Studies of Buildings and Structures68 Aeration: A Wastewater Treatment Process69 Sulde in Wastewater Collection and Treatment Systems70 Evapotranspiration and Irr

22、igation Water Requirements71 Agricultural Salinity Assessment and Management72 Design of Steel Transmission Pole Structures73 Quality in the Constructed Project: A Guide for Owners, Designers, and Constructors74 Guidelines for Electrical Transmission Line Structural Loading76 Design of Municipal Was

23、tewater Treatment PlantsNo. Title77 Design and Construction of Urban Stormwater Management Systems78 Structural Fire Protection79 Steel Penstocks80 Ship Channel Design81 Guidelines for Cloud Seeding to Augment Precipitation82 Odor Control in Wastewater Treatment Plants83 Environmental Site Investiga

24、tion84 Mechanical Connections in Wood Structures85 Quality of Ground Water86 Operation and Maintenance of Ground Water Facilities87 Urban Runoff Quality Manual88 Management of Water Treatment Plant Residuals89 Pipeline Crossings90 Guide to Structural Optimization91 Design of Guyed Electrical Transmi

25、ssion Structures92 Manhole Inspection and Rehabilitation93 Crane Safety on Construction Sites94 Inland Navigation: Locks, Dams, and Channels95 Urban Subsurface Drainage96 Guide to Improved Earthquake Performance of Electric Power Systems97 Hydraulic Modeling: Concepts and Practice98 Conveyance of Re

26、siduals from Water and Wastewater Treatment99 Environmental Site Characterization and Remediation Design Guidance100 Groundwater Contamination by Organic Pollutants: Analysis and Remediation101 Underwater Investigations102 Design Guide for FRP Composite Connections103 Guide to Hiring and Retaining G

27、reat Civil Engineers104 Recommended Practice for Fiber-Reinforced Polymer Products for Overhead Utility Line Structures105 Animal Waste Containment in Lagoons106 Horizontal Auger Boring Projects107 Ship Channel Design (Second Edition)108 Pipeline Design for Installation by Horizontal Directional Dri

28、lling109 Biologic Nutrient Removal (BNR) Operation in Wastewater Treatment Plants110 Sedimentation Engineering: Theory, Measurements, Modeling, and Practice111 Reliability-Based Design of Utility Pole StructuresCONTENTSACKNOWLEDGMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

29、 . . . ixFIGURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiTABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . .

30、 . . . . . . . . . . . . . 11.1 Current Practice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.2 Reliability-Based Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31.3 Objective . . . . . . . . . . . . . . . . . . . . . . . . . . . .

31、. . . . . . . . . . . . . . . . . . . . 51.4 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51.5 Benets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61.6 Relation to National Electrical

32、Safety Code and Other ASCE Guides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 RELIABILITY-BASED DESIGN METHODOLOGY . . . . . . . . . 92.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92.2 Structu

33、ral Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92.3 Design of Wire System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102.4 Types of Load-Producing Events and Return Period . . . . . . . . . . 102.4.1 Weather-Related Events . . .

34、 . . . . . . . . . . . . . . . . . . . . . . . . . . . 102.4.2 Accidental Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112.4.3 Construction and Maintenance Events . . . . . . . . . . . . . . . . . 112.5 Limit State Design . . . . . . . . . . . . . . . . . . . . . . .

35、. . . . . . . . . . . . . . . . . 122.5.1 Loads and Load Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122.5.2 Component Strength . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122.5.3 Load and Resistance Factor Design Format . . . . . . . . . . . . . 142.6 R

36、eliability-Based Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162.6.1 Target Reliability Levels and Corresponding Load Factors 172.6.2 Selection of Strength Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . 192.7 Moment Magnication Consideration for Flexible

37、Poles . . . . . . . 212.8 Coordination of Failure Sequences . . . . . . . . . . . . . . . . . . . . . . . . . 222.8.1 Structures versus Foundations . . . . . . . . . . . . . . . . . . . . . . . . 22v2.8.2 Wire System versus Support System . . . . . . . . . . . . . . . . . . . 232.8.3 Tangent versus

38、Dead-End Structures . . . . . . . . . . . . . . . . . . . 233 LOADS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253.1.1 Weather-Related L

39、oad Events . . . . . . . . . . . . . . . . . . . . . . . . . 263.1.2 Construction and Maintenance Events . . . . . . . . . . . . . . . . . 273.1.3 Failure Containment Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . 273.1.4 Longitudinal Loads . . . . . . . . . . . . . . . . . . . . . . .

40、. . . . . . . . . . . 283.2 References to Appropriate Load Documents . . . . . . . . . . . . . . . . . 283.2.1 Weather-Related Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283.2.2 Construction and Maintenance Loads . . . . . . . . . . . . . . . . . . 293.2.3 Failure Containmen

41、t Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . 293.3 Regional and Local Weather-Related Loads . . . . . . . . . . . . . . . . . . 303.3.1 Extreme Wind Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303.3.2 Combined Ice and Wind Loads . . . . . . . . . . . . .

42、. . . . . . . . . . . 313.4 Effects of Load Factors or Load Return Periods . . . . . . . . . . . . . . . 314 STRENGTH OF SINGLE-POLE UTILITY STRUCTURES . . . . 354.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354.2 Objective . . . . . . . .

43、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 364.3 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374.4 Characterizing Pole Strength . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374.4.1 Lo

44、ads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 384.4.2 Nominal Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 384.5 Proof Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50A

45、PPENDIX A: DESIGN EXAMPLES . . . . . . . . . . . . . . . . . . . . . . . . . . 53A.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53A.2 Example Load Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54A.3 Example 1: Wood

46、Transmission Pole . . . . . . . . . . . . . . . . . . . . . . . 61A.4 Example 2: Wood Distribution Pole . . . . . . . . . . . . . . . . . . . . . . . . 63A.5 Example 3: Steel Transmission Pole . . . . . . . . . . . . . . . . . . . . . . . . 65A.6 Example 4: Steel Distribution Pole . . . . . . . . .

47、. . . . . . . . . . . . . . . . 66A.7 Example 5: Spun Concrete Transmission Pole . . . . . . . . . . . . . . . . 68A.8 Example 6: Fiber-Reinforced Polymer Distribution Pole . . . . . . . 70A.9 Example Calculation of P- Effect Using the Gere-Carter Method . . . . . . . . . . . . . . . . . . . . . . .

48、 . . . . . . . . . . . . . . . . . . . . . . . . . 72vi CONTENTSAPPENDIX B: EXAMPLES FOR CHAPTER 4: ASSESSING NOMINAL VALUE (Rn) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75B.1 Method 1: Empirical Assessment of Rn. . . . . . . . . . . . . . . . . . . . . . 75B.1.1 E

49、xample 1: Wood Poles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75B.1.2 Example 2: Evaluation of Yield Strength of Steel Using Material Test Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78B.2 Method 2: Monte Carlo Simulations with Mechanics-Based Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79B.2.1 Example 1: Custom-Designed Steel Poles (Range of Pole Sizes) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7