1、Mechanistic-Empirical Pavement Design Guide A Manual of Practice August 2015 Second Edition 2015 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.ii | MechanisticEmpirical Pavement Design Guide 2015, by Ameri
2、can Association of State Highway and Transportation Officials. All rights reserved. This book, or parts thereof, may not be reproduced in any form without written permission of the publisher. Printed in the United States of America. Publication Code: MEPDG-2 ISBN: 978-1-56051-597-5 2015 by the Ameri
3、can Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law. | iii AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS EXECUTIVE COMMITTEE 2015/2016 V oting Members O cers: President: John Cox, Wyoming Vice President
4、: Paul Trombino, Iowa Secretary-Treasurer: Carlos Braceras, Utah Regional Representatives: REGION I: Sue Minter, V ermont, One-Y ear T ermLeslie Richards, Pennsylvania, Two-Year Term REGION II: John Schroer, T ennessee, One-Y ear T ermPaul Mattox, West Virginia, Two-Year Term REGION III: Mike King,
5、Kansas, One-Y ear T ermCharles A. Zelle, Minnesota, Two-Year Term REGION IV: Malcom Dougherty, California, One-Y ear T ermBrian Ness, Idaho, Two-Year Term Nonvoting Members Immediate Past President: Mike Hancock, Kentucky AASHTO Executive Director: Bud Wright, W ashington, DC 2015 by the American As
6、sociation of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.iv | MechanisticEmpirical Pavement Design Guide Members: Bill Farnbach Chief, Office of Pavement Engi- neering California Zamora Richard Branch Manager, Project Develop- ment Co
7、lorado Robin Davis Pavement Design Engineer Delaware Chris Brakke Pavement Design/Management Engineer Iowa Greg Schieber Geotechnical Engineer Kansas Paul Looney Pavement Branch Manager Kentucky Jeffery Lambert Pavement Design Engineer Louisiana Richard Bradbury Director of Materials T esting and Ex
8、ploration Maine Edmund Naras Pavement Engineer Massachusetts Curtis Joel Bleech Pavement Operations Engineer Michigan Curt T urgeon Pavement Engineer Minnesota Thomas Booth Director, Aeronautics Mississippi W es Y ang Engineering Research Specialist Ne w Yo r k Aric Morse Assistant Pavement Engineer
9、 Ohio Jeff Dean Pavement Engineer Oklahoma Cole Mullis Pavement Services Engineer Oregon Jeff Uhlmeyer State Pavement Engineer W ashington State Thomas Medvick Pavement Engineer, Materials Division West Virginia 2015/2016 JOINT TECHNICAL COMMITTEE ON PAVEMENTS Other American Association of State Hig
10、hway and Transportation Officials Vicki Schofield Project Manager, AASHTOW areFederal Highway Administration Gary Crawford Concrete Pavement Engineer Transportation Research Board Amir Hanna, Senior Program Officer James Bryant Chair Judith Corley-Lay Pavement Analysis Engineer North Carolina Vice C
11、hair John Donahue Construction and Materials Liaison Engineer Missouri 2015 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.Preface | v PREFACE is document describes a pavement design methodology that is bas
12、ed on engineering mechanics and has been validated with extensive road test performance data. is methodology is termed mecha- nistic-empirical (M-E) pavement design, and it represents a major change from the pavement design methods in practice today. Interested agencies have already begun implementa
13、tion activities in terms of sta training, collection of input data (materials library, tra c library, etc.), acquiring of test equipment, and setting up eld sec- tions for local calibration. is manual presents the information necessary for pavement design engi- neers to begin to use the MEPDG design
14、 and analysis method. is manual refers to AASHTOW are Pavement Me Design, M-E Pavement design software which is commercially available through AASHTOW are, AASHTOs software development program (see http:/www.aashtoware.org/Pavement/Pages/default.aspx). AASHTOW are Pavement ME Design has been revised
15、 from the software described in the previous edition of this manual based upon evaluations performed by state Departments of Transportation and others in the community of practice. e following table summarizes the key di erences noted between the format and calibration factors used in the MEPDG vers
16、ion 1.1 software and the AASHTOW are Pavement ME Design software. 2015 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.Table i-1. Summary of Key Differences in Software Format and Calibration Factors Format
17、and Calibration Factors MEPDG V ersion 1.1 AASHTOWare Pavement ME Design Output Format Excel-based PDF- and Excel-based Climatic Data in Output Summary Not included Included Axle Configuration Data in Output Summary Not included Included Special Axle Load Configuration Included Not included Reflecti
18、on Cracking Not included Included Coefficient of Thermal Expansion (CTE) CTE for Basalt of 4.6 CTE for Basalt of 5.2 PCC Zero Stress T emperature PCC Zero Stress T emperature (Range 60o to 120oF) PCC Set T emperature (Range 70o to 212o F) Heat Capacity of Asphalt Pavement Default value of 0.23 BTU/l
19、b-oF Default value of 0.28 BTU/lb-oF Thermal Conductivity of Asphalt Pavement Default value of 0.67 BTU/(ft) (hr)(F) Default value of 1.25 BTU/(ft)(hr)(F) Surface Shortwave Absorptivity Default value of 0.95 Default value of 0.85 Global Calibration Coefficient for Unbound Materials and Soils in Flex
20、ible Pavement Subgrade Rutting Model k S1granular of 1.63 k S1granular of 2.03 Global Field Calibration Coefficients in the Fatigue Cracking Prediction Model in Flexible Pavement k f2of -3.9492 k f2of 3.9492 k f3of -1.281 k f3of 1.281 Global Field Calibration Coefficients in the Thermal Cracking Mod
21、el for HMA k t(Level 1) of 5.0 k t(Level 1) of 1.5 k t(Level 2) of 1.5 k t(Level 2) of 0.5 k t(Level 3) of 3.0 k t(Level 3) of 1.5 Global Field Calibration Coefficients in the Rut Depth Prediction Model k 2rof 0.4791 k 2of 1.5606 k 3rof 1.5606 k 3of 0.4791 Calibration Coefficients in the Rigid Pavem
22、ent Faulting Prediction Model C 1of 1.29 C 1of 1.0184 C 2of 1.1 C 2of 0.91656 C 3of 0.001725 C 3of 0.0021848 C 4of 0.0008 C 4of 0.0008837 C 7of 1.2 C 7of 1.83312 Calibration Coefficient in the Rigid Pavement Punchout Prediction Model A POof 195.789 C 3of 216.8421 a POof 19.8947 C 4of 33.15789 b POof
23、 -0.526316 C 5of -0.58947 vi | MechanisticEmpirical Pavement Design Guide 2015 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.TABLE OF CONTENTS 1. Introduction . . . . . . . . . . . . . . . . . . . . . . .
24、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.1 Purpose of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.2 Overview of the MEPDG Design Procedure . . . .
25、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2. Referenced Documents and Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112.1 T est Protocols and Standards . . . . . . . . . . . . . . . . . . . . . . . . . . .
26、 . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.2 Material Speci cations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132.3 Standard Practices and T erminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27、 . . . . . . . . . . . . . . . . . 132.4 Referenced Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3. Signi cance and Use of the MEPDG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28、 . . . . . . . . 173.1 Performance Indicators Predicted by the AASHTOW are Pavement ME Design . . . . . . . . . 173.2 MEPDG General Design Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183.3 New Flexible Pavement and HMA Overlay Design Strateg
29、ies Applicable for Use with AASHTOW are Pavement ME Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203.4 New Rigid Pavement, PCC Overlay, and Restoration of Rigid Pavement Design Strategies Applicable for Use with AASHTOW are Pavement ME Design . . . . . . . . . . . . . . 2
30、33.5 Design Features and Factors Not Included Within the MEPDG Process . . . . . . . . . . . . . . . 26 4. T erminology and De nition of Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294.1 General T erms . . . . . . . . . . . . . . . . . .
31、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294.2 Hierarchical Input Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314.3 T r uc k T r a c T erms . . . . . . . . . . . . . . . .
32、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314.4 Smoothness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324.5 Distress or Performance Indicator T erms HMA-Surfac
33、ed Pavements . . . . . . . . . . . . . . . . . 324.6 Distress or Performance Indicator T erms PCC-Surfaced Pavements . . . . . . . . . . . . . . . . . . 33 5. Performance Indicator Prediction MethodologiesAn Overview . . . . . . . . . . . . . . . . . . . . . . . . 355.1 Selecting the Input Levels .
34、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355.2 Calibration Factors Included in AASHTOW are Pavement ME Design . . . . . . . . . . . . . . . . . 375.3 Distress Prediction Equations for Flexible Pavements and HMA Overlays . . . . . .
35、 . . . . . . . . 375.4 Distress Prediction Equations for Rigid Pavements and PCC Overlays . . . . . . . . . . . . . . . . . 53 6. General Project Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 696.1 Design/ Analysis Lif
36、e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 696.2 Construction and Tra c Opening Dates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 7. Selecting Design Criteria and Reliability L
37、evel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 717.1 Recommended Design-Performance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 717.2 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
38、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 8. Determining Site Conditions and Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 758.1 Truck Tra c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
39、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 758.2 Climate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81| vii 2015 by the American Association of State Highway and Transportation Official
40、s. All rights reserved. Duplication is a violation of applicable law. 8.3 Foundation and Subgrade Soils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 828.4 Existing Pavements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
41、 . . . . . . . . . . . . . . . . . . . . . . . . . . 83 9. Pavement Evaluation for Rehabilitation Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 859.1 Overall Condition Assessment and Problem De nition Categories . . . . . . . . . . . . . . . . . . . . . 85
42、9.2 Data Collection to De ne Condition Assessment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 899.3 Analysis of Pavement Evaluation Data for Rehabilitation Design Considerations . . . . . . . . 103 10. Determination of Material Properties for New Paving Materials . . . .
43、. . . . . . . . . . . . . . . . . . . . . 10910.1 Material Inputs and the Hierarchical Input Concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10910.2 HMA Mixtures; Including SMA, Asphalt-Treated or Stabilized Base Layers, and Asphalt Permeable-Treated Base Layers . . . . . . .
44、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10910.3 PCC Mixtures, Lean Concrete, and Cement-Treated Base Layers . . . . . . . . . . . . . . . . . . . . . 11610.4 Chemically Stabilized Materials; Including Lean Concrete and Cement-Treated Base Layers 11610.5 Unbound Aggre
45、gate Base Materials and Engineered Embankments . . . . . . . . . . . . . . . . . . . 123 11. Pavement Design Strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12911.1 New Flexible Pavement Design StrategiesDeveloping the Init
46、ial Trial Design . . . . . . . . 12911.2 New Rigid Pavement Design StrategiesDeveloping the Initial Trial Design . . . . . . . . . . 136 12. Rehabilitation Design Strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14312.1 General Over
47、view of Rehabilitation Design Using the AASHTOW are Pavement ME Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14312.2 Rehabilitation Design with HMA Overlays . . . . . . . . . . . . . . . . . . . . . . . .
48、 . . . . . . . . . . . . . . . 14512.3 Rehabilitation Design with PCC Overlays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164 13. Interpretation and Analysis of the Results of the Trial Design . . . . . . . . . . . . . . . . . . . . . . . . . . . 18113.1 Summar
49、y of Inputs for Trial Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18113.2 Reliability of Trial Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18113.3 Supplemental Information ( Layer Modulus, Truck Applications, and Other Factors) . . . . 18313.4 Predicted Performance V alues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18413.5 Judging the Acceptability of the
