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路面结构层厚度、模量及层间粘结状态对结构层使用性能有着显著影响,为了分析结构层参数变化与路面病害的相关性,建立路面结构力学分析模型计算了层间粘结状态、结构层厚度、结构层模量变化时路面结构层最大拉应力,结果表明,层间粘结强度较低时面层结构受力特性发生改变,面层容易发生疲劳开裂;下面层厚度减小对结构层受力产生的不利影响最为显著,下面层厚度由16.0cm减小到8.0cm,面层最大拉应力增加约2.9~6.6倍,基层最大拉应力增加约5.7~10.0倍;结构层模量减小改变了路面结构受力特性,容易发生开裂破坏。
Pavement structure layer thickness, modulus and interlaminar bonding state have a significant impact on the performance of the structural layer. In order to analyze the relationship between structural layer parameter variation and pavement disease, pavement structural mechanics analysis model is established to calculate the interlaminar bond state, structure Layer thickness and the modulus of the structural layer, the maximum tensile stress of the pavement structure layer changes. The results show that the mechanical properties of the surface structure change when the interlaminar bond strength is low, and the surface layer is prone to fatigue cracking. The most significant negative influence of the layer stress is that the thickness of the lower layer decreases from 16.0cm to 8.0cm, the maximum tensile stress of the surface layer increases about 2.9 to 6.6 times, and the maximum tensile stress of the base layer increases about 5.7 to 10.0 times. Small changes in the mechanical properties of the pavement structure, prone to cracking damage.