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一、极限状态的标准在交通荷栽的多次重复作用下,路面如果在规定的期限内保持整体性和面层表面足够的平整度,那么我们认为路面是坚固的。强度条件发生破坏时,第一,在土基和低粘的路面各层次(砂、砾石等)中,可能发生极限剪切平衡条件破坏而出现残余变形;第二,在整体性路面结构层中拉应力超过极限并出现裂缝。极限状态的这些条件与荷载下的弹性弯沉有关。弹性弯沉的数值,正如研究表明,它表征着柔性路面的强度,因此,目前苏联所采取的柔性路面计算方法是基于
First, the state of the limit state Under repeated loads of traffic load, if the road to maintain the integrity within the prescribed period and the surface smooth enough surface, then we believe that the road is strong. In the event of failure of strength conditions, firstly, residual shear deformation may occur under the conditions of ultimate shearing equilibrium at various levels (sand, gravel, etc.) of the earth-based and low-viscosity pavement; secondly, in the monolithic pavement structure layer Tensile stress is exceeded and cracks appear. These conditions of the limit state are related to the elastic deflection under load. The value of elastic deflection, as the study has shown, is indicative of the strength of the flexible pavement, and so the current method of calculating the flexible pavement adopted by the Soviet Union is based on