Airport pavement is a typical thin shell structure,which is prone to fracture damage caused by temperature stress.Especially in the early hardening process,it is affected by external radiation,and air convection heat transfer,etc.The continuous hydration and heat release of cement itself makes the temperature field of pavement structure change rapidly,and the strength of cement concrete slab in the early stage of pouring pavement slab has not been fully formed,which makes it easier for pavement slab to receive initial damage in the early stage.Through taking the runway of a new airport in southern China as an example,the study calculates the 28-day stress history of cement concrete pavement by simulating the hydration heat of concrete and the heat exchange of pavement surface,and analyzes the early temperature stress state of cement concrete pavement,so as to provide reference for airport pavement construction and maintenance.
维普
万方数据