摘要
为进一步对水泥混凝土桥面柔性铺装结构进行优化,通过对比普通沥青路面直接套用于桥面铺装时的力学特性,对不同沥青混合料的路用性能和力学性能进行分析;借助力学模型软件对不同组合的结构受力状况作计算。结果表明:桥面铺装层承受更大的应力,而相对位移值较小;骨架密实型沥青混合料用于桥面铺装具有更好的抗车辙性能和抗弯拉强度;柔性铺装中增加矿料粒径有利于增加混合料的摩擦角,但抗剪强度降低,应选择路用性能较高的混合料进行组合使用。
In order to further optimize the flexible pavement structure of cement concrete bridge deck,the pavement performance and mechanical properties of different asphalt mixtures were analyzed by comparing with the mechanical properties of ordinary asphalt pavement that were directly applied to bridge deck pavement,and the mechanical model software was used to calculate the stress status of different composite structures.The results show that the bridge deck pavement bears greater stress,but the relative displacement is smaller.The skeleton dense asphalt mixture can be used for bridge deck pavement with better rutting resistance and flexural tensile strength;the increase of the particle size in the flexible pavement contributes to increasing the friction angle of the mixture,but the shear strength will be reduced.Therefore,the combination of the road type with higher performance should be selected and used in combination.
作者
王锦斌
WANG Jin-bin(Shanxi Taijiu Expressway Co.,Ltd.,Yangquan 045000,Shanxi,China)
出处
《筑路机械与施工机械化》
2018年第9期85-91,共7页
Road Machinery & Construction Mechanization
基金
山西省青年基金项目(201701D221060)
关键词
道路工程
柔性铺装
力学分析
结构优化
road engineering
flexible pavement
mechanical analysis
structural optimization
