01015506

Component

https://doi.org/10.3141/1919-08

http://scholar.google.com...Beam&publication_year=2005

Many highway agencies use AASHTO methods for the design of pavement structures. Current AASHTO methods are based on empirical relationships between traffic loading, materials, and pavement performance developed from the AASHO Road Test (1958–1961). The applicability of these methods to modern-day conditions has been questioned; in addition, the lack of realistic inputs regarding environmental and other factors in pavement design has caused concern. Research sponsored by the NCHRP has resulted in the development of a mechanistic–empirical design guide (M-E design guide) for pavement structural analysis. The new M-E design guide requires more than 100 inputs to model traffic, environmental, material, and pavement performance to provide estimates of pavement distress over the design life of the pavement. Many designers may lack specific knowledge of the data required. A study was performed to assess the relative sensitivity of the models used in the M-E design guide to inputs relating to portland cement concrete materials in the analysis of jointed plain concrete pavements. Twenty-nine inputs were evaluated by analysis of a standard pavement section and change of the value of each input individually. The three pavement distress models (cracking, faulting, and roughness) were not sensitive to 17 of the 29 inputs. All three models were sensitive to six of the 29 inputs. Combinations of only one or two of the distress models were sensitive to six of the 29 inputs. These data may aid designers in focusing on inputs that have the most effect on desired pavement performance.

01015500

English

pp 65-73

2005

Transportation Research Record: Journal of the Transportation Research Board

0309093929

Print

Figures (3) ; References (4) ; Tables (4)

Concrete pavements; Mathematical models; Mechanistic design; Pavement design; Pavement distress; Pavement performance; Portland cement concrete; Rigid pavements; Sensitivity analysis

AASHO Road Test

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

TRIS, TRB, ATRI

Jan 13 2006 10:00AM

• Analytical Study of Effects of Truck Tire Pressure on Pavements with Measured Tire-Pavement Contact Stress Data
• Calibration of Alligator Fatigue Cracking Model for 2002 Design Guide
• Closed-Form, Six-Slab, Thick-Plate Solution for Analysis of Edge Slab of Concrete Pavement
• Concrete-Filled, Glass Fiber-Reinforced Polymer Dowels for Load Transfer in Jointed Rigid Pavements
• Engineering Solution for the Uniform Strength of Partially Cracked Concrete
• Enhanced Portland Cement Concrete Fatigue Model for StreetPave
• Evaluation of Predicted Pavement Response with Measured Tire Contact Stresses
• Field and Theoretical Evaluation of Thermal Fatigue Cracking in Flexible Pavements
• Implementation Initiatives of the Mechanistic-Empirical Pavement Design Guides in Indiana
• Implementing the Mechanistic-Empirical Design Guide Procedure for a Hot-Mix Asphalt-Rehabilitated Pavement in Indiana
• Improvements of Testing Procedures for Concrete Coefficient of Thermal Expansion
• Measurement and Significance of the Coefficient of Thermal Expansion of Concrete in Rigid Pavement Design
• Predicting Asphalt Pavement Temperature with a Three-Dimensional Finite Element Method
• Quantification of the Joint Effect of Wheel Load and Tire Inflation Pressure on Pavement Response
• Strategic Plan of the Texas Department of Transportation for Implementing NCHRP 1-37A Pavement Design Guide
• Stress Prediction for Cracking of Jointed Plain Concrete Pavements, 1925-2000: An Overview