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作者们依据在工程实践中出现的问題,对具有刚性下卧层的路面进行了理论分析和试验研究,揭示出这类路面的破坏原因在于:在刚性层上的路面层内产生应力集中,导致面层过大的弯拉应力及基层过大的活动剪应力,从而对具有刚性下卧层的路面设计提出二个验算指标即面层的抗弯拉及基层的抗剪切。重点研究了基层抗剪切指标,并提出了一整套计算方法及参数,供实际应用。
Based on the problems in engineering practice, the authors made theoretical analysis and experimental research on the pavement with rigid subsoil, revealing that the damage of such pavement is due to the stress concentration in the pavement layer on the rigid layer, resulting in Bending stress of the surface too large and excessive shear stress of the grassroots, so as to two parameters of the road surface design with rigid under-lying layer that is the anti-bending of the surface layer and the shear resistance of the grassroots. Focus on the primary anti-shear indicators, and put forward a set of calculation methods and parameters for practical application.