【摘要】 利用有限元法计算了不同工况下水泥路面板的温度应力,包括不同的面板尺寸、板厚和基层顶面当量回弹模量.结果表明:板内温度应力随着板尺寸的减小而减小,板平面尺寸由4m×5m变化到3.5m×3m时,温度应力减小幅度并不大;当板平面尺寸小于3.5m×3m时,温度应力减小幅度比较大,降低幅度约为20%~30%.因此,减小板的平面尺寸能够有效地降低板内的温度应力,提高使用寿命.更多还原

【Abstract】 Temperature warping stresses of cement road slab were calculated by finite element analysis under different working conditions,including different sizes,thicknesses,and equivalent resilience modulus.Results show that slab temperature warping stress decreases with the decrease of the size of slab.The reduction of temperature stress is not large when slab size changes from 4m×5mto 3.5m×3m,while it decreases quicker when the slab plane size is less than3.5m×3m,whose reduction is between 20% and 30%.Therefore,the reduction of slab plane size can effectively reduce the temperature stress in the slab and prolong the service life.更多还原