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Cover of Analysing Dynamic Wheel Loading and its Effects on the Network
Analysing Dynamic Wheel Loading and its Effects on the Network
  • Publication no: AP-T297-15
  • ISBN: 978-1-925294-45-3
  • Published: 13 July 2015

This interim report is the third and final deliverable in the 2013/14 and 2014/15 project years for Austroads project AT1733, Analysing Dynamic Wheel Loading and its Effects on the Network. The purpose of the project is to quantify the impacts of dynamic wheel loads applied by vehicles to pavement surfaces and bridges.

The project, as detailed in this report, has implemented changes in approach to overcome limitations in previously trialled models for linking vehicle/road characteristics and dynamic wheel loads. In particular, a physical dynamics model has been implemented to replace previous statistical models, and provide a more reliable and accurate link between wheel loads and road profile, and enable calculations of spatial repeatability. A test program, specifically designed to collect data to support this revised modelling approach, was also carried out successfully.

  • Summary
  • 1. Introduction
    • 1.1. Progress on the Current Project (AT1733)
    • 1.2. Outline of Deliverables and Milestones
    • 1.3. Outlining the Research Needs
  • 2. Feedback Received from Working Group
    • 2.1. Methods of Presenting the Results
    • 2.2. The Scope of the Proposed Field Test Program
    • 2.3. Links to Bridge-Loading Research
    • 2.4. Dynamic Load Share
  • 3. Development of the Dynamic Model
    • 3.1. Previous Development of Dynamic Models
    • 3.2. New Approach Using Existing Simulation Capabilities
    • 3.3. Validation and Calibration of the Model
    • 3.4. Required Input Data
  • 4. Quantification of the Effects of Input Parameters
    • 4.1. Field Data
    • 4.2. Published Research
    • 4.3. Quantification of Knowledge Gaps
      • 4.3.1. Sensitivity Study to Determine Significance of Knowledge Gaps
    • 4.4. Relative Importance of Influencing Parameters
      • 4.4.1. Static Axle Load
      • 4.4.2. Spring Vertical Stiffness and Damping Coefficient
      • 4.4.3. Road Profile
      • 4.4.4. Travel Speed
      • 4.4.5. Sprung Mass Inertia
      • 4.4.6. Tyre Vertical Stiffness
      • 4.4.7. Road Geometry
  • 5. Field Test Program
    • 5.1. Aim and Objectives
    • 5.2. Key Features
    • 5.3. Test Program
      • 5.3.1. Vehicles Used for Testing
      • 5.3.2. Test Roads
      • 5.3.3. Test Cases
    • 5.4. Preliminary Testing Outcomes
    • 5.5. Summary of Test Data Sets
  • 6. Conclusions and Next Steps
  • References
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