材料参数变化对沥青加铺层结构应力的影响

采用沥青加铺层结构是修补旧水泥路面的有效方法,但由于旧水泥路面裂缝的存在,沥青加铺层易产生反射裂缝。文章建立三维有限元模型,模拟在交通荷载作用下,通过分别改变加铺层模量、夹层模量、加铺层厚度、夹层厚度以及基础模量,得出加铺层应力响应的变化规律。其结论对实际工程中选取合理的修补方案具有一定的参考意义。

Impact of Material Parameter Variation on the Structural Stress of Additional Asphalt Layer

Paving additional asphalt layer is an effective method for repairing the old cement pavement.However,with the crack on the old cement pavement,some reflective crack may occur on the additional asphalt layer.By establishing a tri-dimensional finite element model,the Paper introduces how to obtain the variation rule of stress response of additional layer by respectively changing the modulus of additional layer and interlayer,the thickness of additional layer and interlayer,as well the foundation modulus.Its conclusion will provide some reference for selecting reasonable repair scheme during the actual works.