机场水泥道面水泥稳定碎石基层应力状态分析

Analysis of Stress State of Cement Stabilized Gravel Base at Airport Cement Pavement

针对机场水泥道面水稳基层多裂缝现状,采用有限元分析得到荷载应力,参考微分单元受力理论得到的温缩应力和干缩应力计算公式与分布规律,解释了目前水稳基层的开裂原因。并对温、干缩应力各影响因素进行分析,为减少水稳基层裂缝数量、增大裂缝间距提供可行途径和理论依据。

Aiming at the current multi cracks status in the base of cement road in airport, the load stress, temperature shrinkage stress and dry shrinkage stress is taken into consideration to get the cal culation and distribution law by using finite element analysis and referencing theory of differential u nits＇ stress. Theoretical analysis results explain the cracking of cement stabilized gravel base. At the moment, in order to provide feasible methods and theoretical basis for decreasing the fractures number and increasing crack spacing, the influence factors of temperature shrinkage stress and dry shrinkage stress are analyzed.