水泥混凝土路面应力吸收层功效分析

由于旧水泥混凝土路面接缝点存在应力集中,旧水泥混凝土路面上的加铺层极易产生反射裂缝;而设置了应力吸收层的水泥混凝土路面加铺层却得到良好的改善,为了验证水泥混凝土路面中应力吸收层的功效并探究功效大小,利用有限元原理,对设置应力吸收层和未设置应力吸收层的加铺层路面结构进行分析;通过建模分析,结论数据表明,设置应力吸收层后,水泥混凝土路面接缝点的加铺层结构受到的应力得到很大程度的缓解,从而有效控制反射裂缝的发生和延伸恶化,延长了公路的使用寿命.

Effect Analysis of Stress Absorbing Layer in Cement Concrete Pavement

Because of stress concentration at the seam crossing of old cement concrete pavement,the overlay on the old cement concrete pavement produces reflection crack.In order to prove and test the effect of the overlay,we take the theory of the finite element and analyse the overlay with stress absorbing membrane interlayer and the adverse condition.According to modeling,the result proves the overlay at the seam crossing with stress absorbing membrane interlayer bears less power.This can prevent reflection crack apparently and prolong the life of pavement.