Study of Mechanical Behaviors of Airfield PCC Slabs In Process of Breaking With Pickaxe Machine

Abstract:

Based on FEM software abaqus, a two-slab analysis model considering joint load transfer and interlayer contact condition is established, in which the model dimension, displacement boundary, load model, material model, joint load transfer are simplified. The Model can be used to study the mechanical behaviour of PCC pavement in process of breaking with pickaxe machine. Both deformation and tensile stress and interface shear stress of removal slab and reserved slab are calculated for typical breaking process parameter and pavement structure, the mechanism for destruction of reserved slab is also proposed.