Abstract
Thermal stress caused by temperature distribution in pavement slab is important in the structural design of airport concrete pavements. Airport concrete pavement slab is very thick, therefore, temperature in the pavement slab varies nonlinearly throughout the slab depth. Thermal stress caused by the nonlinear temperature distribution would be different from that of linear temperature distribution. In this research, following issues were investigated to evaluate the thermal stress in concrete pavement. 1) Thermal stress caused by nonlinear temperature distribution was calculated using temperatures and restraint strains measured in an experimental concrete pavement with a 46cm thick slab. 2) Temperature distribution in concrete pavement was evaluated by thermal analysis. 3) Thermal stress was calculated considering the nonlinear temperature distribution by 3DFEM.
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