DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...
Transcript of DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...
![Page 1: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/1.jpg)
DEVELOPMENT
OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN TOOL
FOR PENNSYLVANIA RIGID PAVEMENTS (PITTRIGID-ME)
Lev Khazanovich, Anthony Gill Professor
Haoran Li, graduate student
University of Pittsburgh | Swanson School of Engineering 1
![Page 2: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/2.jpg)
THE PROBLEM
The current Pennsylvania design method for rigid pavements is outdated
AASHTO 93-based procedure (1960-s technology)
Not cost-effective: many empirical evidences of overdesign built into AASHTO 93
Pennsylvania is transitioning to AASHTO ME design, which requires the user:
to provide many inputs thus increasing possibilities of the design errors
to use AASHTOWare Pavement ME software with an expensive license
University of Pittsburgh | Swanson School of Engineering 2
![Page 3: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/3.jpg)
WHY AASHTO ME DESIGN?
3
3 University of Pittsburgh | Swanson School of Engineering
Concrete Sustainability Hub@MIT – Special Research Brief – March 2011
![Page 4: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/4.jpg)
AASHTOWARE PAVEMENT ME
4
4 University of Pittsburgh | Swanson School of Engineering
Project control
panel
Project
information
Pavement layers
layout
Design criteria
Dashboard
Dialog area
![Page 5: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/5.jpg)
RESEARCH OBJECTIVES
5
5 University of Pittsburgh | Swanson School of Engineering
Provide effective, localized design tool to Pennsylvania pavement engineers compatible with the AASHTOWare Pavement ME program similar to MnPAVE Rigid, the tool used by MnDOT
Accelerate implementation of the AASHTO Mechanistic-Empirical Pavement Design Guide (MEPDG)
Reduce potential of design errors from the improper use of the AASHTOWare Pavement ME software
Reduce or eliminate license fees required to perform MEPDG design using the AASHTOWare Pavement ME software
![Page 6: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/6.jpg)
MNPAVE RIGID
6
6 University of Pittsburgh | Swanson School of Engineering
![Page 7: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/7.jpg)
APPROACH - TASKS
Task 1. Literature and Software Review and Sensitivity Analysis
Task 2: Perform Pavement ME Factorial and Develop Simplified Design Tool, PittRigid-ME
Task 3: Conduct PittRigid-ME Verification
Task 4: Final Report
University of Pittsburgh | Swanson School of Engineering 7
![Page 8: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/8.jpg)
PROGRESS TO DATE
Evaluated relevant literature dealing with Pavement ME inputs and sensitivity studies
Performed preliminary sensitivity study and evaluated relative significance of the inputs for Pennsylvania conditions
Recommended design features for PittRigid-ME
8 University of Pittsburgh | Swanson School of Engineering
![Page 9: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/9.jpg)
PAVEMENT ME INPUTS
9 University of Pittsburgh | Swanson School of Engineering
Traffic
Annual Average Daily Truck Traffic (AADTT)
Vehicle class distribution
….
Climate (weather stations)
JPCP Design Features
PCC thickness
Joint spacing
Shoulder type
Dowel diameter
Base type and thickness
![Page 10: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/10.jpg)
PAVEMENT ME TRAFFIC INPUTS
10
10 University of Pittsburgh | Swanson School of Engineering
Monthly Adjustment
Factor (MAF)
Hourly Adjustment
Factor (HAF)
Axle spectrum distribution
Annual growth rate
Basic design lane
and traffic
configuration
![Page 11: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/11.jpg)
PAVEMENT ME CLIMATE INPUTS
11
11 University of Pittsburgh | Swanson School of Engineering
![Page 12: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/12.jpg)
PAVEMENT ME JPCP DESIGN INPUTS
12
12 University of Pittsburgh | Swanson School of Engineering
May 12, 2019
Dowel bar design
General JPCP inputs
PCC-base bonding
conditions
Joint spacing
Shoulder type and
lane width
![Page 13: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/13.jpg)
SENSITIVITY ANALYSIS
More than 100 Pavement ME runs
7-in thick Jointed Plain Concrete Pavement
9-in thick Jointed Plain Concrete Pavement
13 University of Pittsburgh | Swanson School of Engineering
![Page 14: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/14.jpg)
SENSITIVITY ANALYSIS
14 University of Pittsburgh | Swanson School of Engineering
![Page 15: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/15.jpg)
SENSITIVITY ANALYSIS
15 University of Pittsburgh | Swanson School of Engineering
![Page 16: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/16.jpg)
CLIMATE INPUTS
16 University of Pittsburgh | Swanson School of Engineering
![Page 17: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/17.jpg)
CLIMATE INPUTS
17 University of Pittsburgh | Swanson School of Engineering
![Page 18: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/18.jpg)
CLIMATE INPUTS
18 University of Pittsburgh | Swanson School of Engineering
![Page 19: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/19.jpg)
CLIMATE INPUTS RECOMMENDATIONS
19 University of Pittsburgh | Swanson School of Engineering
![Page 20: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/20.jpg)
TRAFFIC INPUTS
20 University of Pittsburgh | Swanson School of Engineering
Interstate Urban
Interstate Rural
Principal Arterial
Minor Arterial
Traffic mix
![Page 21: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/21.jpg)
EFFECT OF BASE TYPE
21
21 University of Pittsburgh | Swanson School of Engineering
![Page 22: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/22.jpg)
EFFECT OF BASE THICKNESS
22
22 University of Pittsburgh | Swanson School of Engineering
![Page 23: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/23.jpg)
RECOMMENDED PITTRIGID-ME DESIGN INPUTS
Design life: 1-100 years
Climate Regions
Region 1: Erie County
Region 2: PennDOT Districts D1 (except Eire County), D10, D11, and D12
Region 3: PennDOT Districts D2 and D9
Region 4: PennDOT Districts D3 and D4
Region 5: PennDOT Districts D5, D6, and D8
23
23 University of Pittsburgh | Swanson School of Engineering
![Page 24: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/24.jpg)
RECOMMENDED PITTRIGID-ME DESIGN INPUTS (CONT.)
Two-way AADTT: 0-10000
Yearly compound growth rate: 0-10%
Traffic Patterns:
Urban Principal Arterial-Interstate
Rural Principal Arterial-Interstate,
Minor Arterials, Collectors, and Recreational
Number of lanes: 2, 4, 6, or 8
24
24 University of Pittsburgh | Swanson School of Engineering
![Page 25: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/25.jpg)
PITTRIGID-ME DESIGN INTPUTS (CONT.)
Shoulder type
Concrete slab width
Base type
25
25 University of Pittsburgh | Swanson School of Engineering
Required concrete slab thickness
Required dowel diameter
PITTRIGID-ME OUTPUT
![Page 26: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/26.jpg)
NEXT STEPS
Perform more than 50,000 Pavement ME simulations
Screen the output files for predicted:
Fatigue damages at the bottom and top surfaces of the concrete slab
Differential energy of subgrade deformation
Develop procedures for predicting cracking and faulting for various levels of traffic and concrete strength
Develop procedures for thickness and dowel
diameter prediction
26
26 University of Pittsburgh | Swanson School of Engineering
![Page 27: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/27.jpg)
SCHEDULE
University of Pittsburgh | Swanson School of Engineering 27
Year 1
Months 1 2 3 4 5 6 7 8 9 10 11 12
Task 1: Literature and Software Review and Sensitivity Analysis
Task 2: Develop PittRigidME
Delieverable: An alpha-version of PittRigidME
Task 3: Conduct PittRigidME verification
Delieverable: A Memo comparing PittRigidME and PavementME
Task 4: Final Report
Delieverable: Final Report and the final version of the software
![Page 28: DEVELOPMENT OF SIMPLIFIED MECHANISTIC-EMPIRICAL DESIGN ...](https://reader030.fdocuments.us/reader030/viewer/2022020622/61ee38d7e789822e206664be/html5/thumbnails/28.jpg)
APPLICATION OF RESEARCH PRODUCT
Design of new concrete pavements
Implementation of the AASHTO ME design procedure for concrete pavements in Pennsylvania without software license fees
Simplification of design and reduction of design errors
Pavement type selection
Improvement/local calibration of AASHTO ME for Pennsylvania conditions
28
28 University of Pittsburgh | Swanson School of Engineering