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本文描述了水泥稳定基层与薄沥青面层路面系统厚度设计方法。水泥稳定基层铺筑在土基上,薄沥青面层起保护作用。应力和变形采用弹性层状体系理论计算。首先选择适当的厚度,以防止水泥稳定层的疲劳破坏,第二步是保证荷载应力和温度应力的综合作用不使稳定层开裂。 本方法考虑了水泥稳定层建筑以后,由于收缩应力迅速产生裂缝的情况。基层和土基的模量,或者由实验室试验决定,或者通过近似方法计算。在公路型荷载条件下,用本方法求得的厚度与用现行方法得到的厚度比较,表明两种方法得出的值近似。一般来说,这一厚度足以使路面的初始裂缝最小,因此,对于只有少量重复载重荷载的情况,本方法可能偏于保守。
This paper describes the design method of the thickness of the pavement system between the cement stabilized base and the thin asphalt surface. Stabilized cement foundation paved on the foundation, thin asphalt surface protection. The stress and deformation are calculated using the elastic layered system theory. First, select the appropriate thickness, in order to prevent fatigue failure of the stabilized layer of cement, the second step is to ensure that the combined effect of load stress and temperature stress does not make the stability layer cracking. This method takes into account the rapid crack generation due to shrinkage stress after the construction of the stabilized concrete structure. The modulus of grassroots and earth-based, either determined by laboratory tests or calculated by approximate methods. Under highway load conditions, the thickness obtained by this method is compared with the thickness obtained by the current method, indicating that the values obtained by the two methods are approximate. In general, this thickness is sufficient to minimize the initial crack in the pavement, so the method may be conservative in the case of only a small number of repeated loading loads.