Implementation and local calibration of the MEPDG transfer functions in Wyoming.

Details

• Creators:
  Bhattacharya, Biplab B. ; Von Quintus, Harold L. ; Darter, Michael I.
• Corporate Creators:
  Applied Research Associates, Inc.
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Mechanistic-empirical pavement design
  • Implementation
  • Calibration
  • Fatigue cracking
  • Rutting
  • Transfer functions
  • Test sections
  • Field tests
  • Pavement performance
  • Rigid pavements
  More +
• Publication/ Report Number:
  FHWA 16/02F
• Resource Type:
  Tech Report
• Geographical Coverage:
  Wyoming
• Corporate Publisher:
  Wyoming. Dept. of Transportation
• Abstract:
  The Wyoming Department of Transportation (WYDOT) currently uses the empirical AASHTO Design for Design of ; Pavement Structures as their standard pavement design procedure. WYDOT plans to transition to the Mechanistic ; Empirical Pavement Design Guide (MEPDG) for designing new and rehabilitated highway pavements. As a part of the ; transitioning process, WYDOT has sponsored an implementation project. One part of the implementation project is to ; verify the MEPDG global distress transfer functions and calibrate these functions to local conditions, if determined to ; be necessary. The Wyoming Long-Term Pavement Performance (LTPP) and non-LTPP roadway segments, as well as ; LTPP test section is adjacent states were used for this verification-calibration process. ; As noted above, one objective of the implementation project was to verify or confirm that the MEPDG transfer ; functions and global calibration coefficients derived from NCHRP project 1-40D reasonably predict distresses and ; smoothness in Wyoming. One of the tasks within this project focused on using the Wyoming LTPP test sections to ; confirm the applicability of the global calibration coefficients. Results from the initial verification concluded some of ; the transfer functions exhibited significant bias between the measured and predicted distress and require local ; calibration. Thus, some of the LTPP test sections in adjacent states with similar design features built in Wyoming ; combined with some non-LTPP roadway segments in Wyoming were used to determine the coefficients of the transfer ; functions to eliminate any bias between the measured and predicted distresses. ; This report documents the local calibration of the transfer functions using LTPP and non-LTPP roadway segments. The ; calibration process follows the steps presented in the 2010 AASHTO MEPDG Local Calibration Guide. Local ; calibration coefficients were derived to remove that bias for the rutting, fatigue cracking, and thermal cracking transfer ; functions of flexible pavements, and the faulting and fatigue cracking transfer functions of rigid pavements. The global ; coefficients of the smoothness degradation regression equation for flexible and rigid pavements were also checked for ; their applicability to Wyoming conditions.
  More +
• Format:
  PDF
• Funding:
  RS03209
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/29562/dot_29562_DS1.pdf
• File Type:
  [PDF - 2.30 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:154dc252c7d301a8f47f08ef09885731ef7726704ae0bdc8e038bca670bdd3ca