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针对APP改性沥青油毡在旧路面沥青混凝土加铺层间防裂中的应用还不广泛,许多研究尚不完善,尤其是力学分析较薄弱的情况,以徐州G104国道机场路改造工程为依托,首先详细解释了APP油毡的工作机理。然后采用有限元方法利用ANSYS软件建立了APP油毡层间防裂效果分析的计算模型,结合依托工程拟定计算参数,经比较分析确定了计算点位。最后全面系统地研究了在行车荷载、温度荷载及两者耦合作用下,APP油毡夹层对加铺层结构的最大主应力、最大剪应力、等效应力、弯沉差等主要控制开裂变量的影响,并推荐了APP油毡的最佳拉伸模量,以期为APP油毡层间防裂提供理论和工程应用的依据。
Aimed at the application of APP modified asphalt felt in anti-cracking of asphalt concrete pavement of old pavement, it is not widely used and many studies are still not perfect, especially in the case of weak mechanical analysis. Relying on the reconstruction of G104 State Road Airport Road in Xuzhou, First explain in detail the working mechanism of APP linoleum. Then, the finite element method was used to establish the calculation model of anti-cracking effect analysis of APP felt with ANSYS software. The calculated parameters were calculated based on the project, and the calculated points were determined by comparative analysis. Finally, a comprehensive and systematic study of the main load, temperature load and the coupling between the two, APP felt laminated on the overlay structure of the maximum principal stress, the maximum shear stress, equivalent stress, deflection and other major cracking control variables , And recommended the best tensile modulus of APP linoleum, in order to provide theoretical and engineering basis for APP linoleum interlayer crack prevention.