Effect of aircraft gear positions and gear configurations on load transfer efficiency of airfield rigid pavement joints

Ashish Wadkar, Yusuf Mehta, Douglas Cleary, Alejandro Zapata, Laura Musumeci, William Kettleson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Load transfer efficiency (LTE) is commonly used to evaluate degree of load transfer in case of jointed concrete pavements. The concept of load transfer is very important and fundamental to Federal Aviation Administration's (FAA) rigid pavement thickness design procedures. The FAA procedure assumes 25% of stress applied to the edge is transferred across a joint to the adjoining slab. Degree of load transfer across a joint was found to be different under a static and moving aircraft gear. Moreover, as an aircraft traverses a joint, the wheels might be oriented perpendicular or parallel to the joint. The slab bending phenomenon tends to be different under different gear configuration in various positions with respect to the joint. The effect of differential stress distribution along the joint under various modern day aircraft gear configurations in different positions was studied using a 3D-Finite Element analysis program FEAFAA. It was found that load transfer across a joint is a function of number of loaded areas along the joint edge. Overall the differences in LTE were insignificant for similar aircraft in different positions along the joint.

Original languageEnglish (US)
Title of host publicationRoad Pavement and Material Characterization, Modeling, and Maintenance - Proceedings of the 2011 GeoHunan International Conference
Pages40-48
Number of pages9
Edition213 GSP
DOIs
StatePublished - Sep 21 2011
Event2011 GeoHunan International Conference - Road Pavement and Material Characterization, Modeling, and Maintenance - Hunan, China
Duration: Jun 9 2011Jun 11 2011

Other

Other2011 GeoHunan International Conference - Road Pavement and Material Characterization, Modeling, and Maintenance
CountryChina
CityHunan
Period6/9/116/11/11

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Civil and Structural Engineering
  • Building and Construction
  • Architecture

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