筏式基础结构的沥青混凝土路面设计计算和影响因素分析

Design Calculation and Influencing Factors Analysis of Asphalt Concrete Pavement with Mat Foundation Structure

有一种拥有多年历史的沥青路面做法:把水泥混凝土的刚性低基层直接建在原状土上,像构筑物的筏式基础,路基土只承受自重荷载,其基本不承受车轮荷载应力,或是车轮荷载应力与自重应力之比基本接近小于0.1,可以忽略不计[1]。文章用层状体系理论的BISAR3.0软件,进行路基工作区验算,介绍了水泥混凝土刚性底基层的厚度、强度、土基回弹模量值对路基工作区深度的影响程度,可为类似设计提供参考。

There is a kind of asphalt pavement practice has a history of many years, the rigid low base of cement concrete is directly built on the undisturbed soil, like the mat foundation of the structure, the subgrade soil can only bear the deadweight load, its basic does not bear the wheel load stress, or the ratio of the wheel load stress and the dead weight stress is less than 0.1, it can be ignored[1]. This article used the BISAR3.0 software of layered system theory, carried out the checking computations of subgrade working area ar. At the same time, this article also introduced the thickness, strength, modulus of resilience of the cement concrete rigid base layer on the depth of the subgrade work area, which can provide reference for similar design.