大跨径钢桥面粘弹性沥青铺装层温度应力求解

Solution to the Thermal Stress of the Viscoelastic Asphalt Pavement on the Large-span Steel Bridge Deck

建立了大跨径钢桥面铺装层温度应力计算模型,并导出了该模型温度应力计算方法;引入沥青材料的松弛模量和时温等效性,推导出钢桥面粘弹性沥青铺装层温度应力计算式,最后应用该方法求解了某大跨径钢桥面铺装层在变温作用下的温度应力.

A calculation model of the thermal stress of the asphalt pavement on the large - span steel bridge deck was founded, and the solution of the thermal stress of this model was worked out. Then, the calculation expression of the thermal stress of the viscoelastic asphalt pavement on the steel bridge deck was deduced, with the relaxation modulus and the time - temperature equivalence applied. Lastly, this solution was applied to calculate the thermal stress of a certain asphalt pavement on the steel bridge deck.