车载动水压力对沥青路面破坏的影响

Influence of vehicle hydrodynamic pressure on the damage of asphalt pavement

以保定市顺平县G234国道沥青路面为研究对象,建立了沥青路面有限元模型,模拟了车载作用对饱水与干燥状态沥青路面的响应规律,研究了水的存在对路面结构受力的影响,结果表明:水的存在抑制了车辆荷载在沥青路面上的传递;在同一位置,饱水状态下各层路面的竖向压应力均小于无水状态下的竖向压应力;饱水状态下排水路面各层水平应力变化规律与普通路面基本一致。

Taking the asphalt pavement of G234 national highway in Shunping as the research object,the finite element model of asphalt pavement is established,the response law of vehicle action on saturated and dry asphalt pavement is simulated,and the influence of water on the stress of pavement structure is studied.The results show that the existence of water inhibits the transmission of vehicle load on asphalt pavement.At the same position,the vertical compressive stress of each layer of pavement in the saturated state is less than that in the anhydrous state.The variation law of horizontal stress of each layer of drainage pavement under saturated state is basically consistent with that of ordinary pavement.