Perpetual pavement structure design uses tensile strain index and vertical compressive strain index to control the structure fatigue life, and uses shear index to ensure that surface distr.

• 长寿命沥青混凝土路面结构设计采用沥青混凝土层底弯拉应变和基顶压应变指标控制结构疲劳寿命,采用抗剪指标以控制表面损坏过早发生。