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随着交通量的增长和渠化交通的推广,沥青路面车辙病害在我国业已出现。采用蠕变理论与试验对车辙进行研究和控制在国际上也因其简便而方兴未艾。本文简洁地介绍了四种方法,思路有借鉴的价值。Huschek Ⅱ法通过蠕变试验方法的选擇,建立与车辙的联系,Huschek Ⅰ法借助于马克斯威尔体(Maxwell)在应力为常量,当荷载作用时间t等于T时(t=T),粘性变形等于弹性变形;这样实际应用时问题就归结于T值的确定,而T=η/E。论文所推荐的新方法是目前广泛应用的壳牌法(Shell)的发展,Shell法的思路简明,应用时的难点在两个修正系数C_m与Z(?),新法采用了三向应力的概念。
With the increase of traffic volume and the promotion of canalized traffic, the rutting disease of asphalt pavement has appeared in our country. The research and control of rutting with creep theory and testing is also in the ascendant in the international arena because of its simplicity. This article succinctly introduced four kinds of methods, ideas have reference value. Huschek II method through the creep test method to establish the relationship with rutting, Huschek I method by means of Maxwell body (Maxwell) at a constant stress, when the load time t is equal to T (t = T), viscosity Deformation is equal to the elastic deformation; so practical problems are due to the determination of T value, and T = η / E. The new method recommended in this paper is the development of Shell, which is widely used at present. The idea of Shell method is concise, and the difficulty of applying the two correction coefficients C_m and Z (?). The new method adopts the concept of three-direction stress.