TITLE:
A New Approach in Design of a Pavement Reinforced by A Geosynthetic Layer in Severely Stressed Area of the Airport Pavement to Accommodate Stresses Imposed by Aircraft Landing and Ground Movements
AUTHORS:
Devinder Kumar Yadav
KEYWORDS:
Aircraft, Airport, Aeronautical, Aviation, Apron, Engineering, Pavement, Runway, Structure
JOURNAL NAME:
Journal of Transportation Technologies,
Vol.12 No.3,
June
28,
2022
ABSTRACT: Pavements of airport runway and apron are
subjected to stern stresses imposed by landing and ground movements of
aircraft. The stresses are primarily concentrated in touchdown zone and wheel
path areas of the pavement structure. This paper proposes that this area can be
designed using geosynthetic layer
reinforcement to minimise deflection and deterioration of the structure. The
reinforcement can reduce the vertical stresses on the underground fuel pipes in
the apron area, if used. The concept of ditch conduit reinforcement is
suggested where a geosynthetic layer is used within a soil backfill to
redistribute load over a conduit leading to stress redistribution. It is
observed that the vertical load is significantly reduced by the arching action
of the soil mass overlying the conduit. The load can be reduced further by
placing a geosynthetic reinforcement layer within the soil backfill above the
conduit. It is suggested that the inclusion of a geosynthetic layer in the
granular backfill reduces the vertical load on a ditch conduit and the amount
of reduction depends upon the tensile modulus, deflection of the geosynthetic
and soil arching action. This leads to believe that a reinforced pavement
structure for runway and aerodrome apron area improves the load carrying
capacity of the pavement to sustain the operations of heavy transport aircraft,
including occasional overloading of the pavement. Hence, this paper explores a
possibility of using a geosynthetic layer under the runway pavement to provide
reinforcement.