[中英]柔性路面設(shè)計(jì)

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　　Flexible Pavement Design　　 Generally speaking, pavements (and bases ) may be divided into two broad classifications or types: rigid and flexible. As commonly used in the United States, the term "rigid pavement" is applied to wearing surfaces constructed of Portland-cement concrete. A pavement constructed of concrete is assumed to possess considerable flexural strength that will permit it to act as a beam and allow it to bridge over minor irregularities which may occur in the base or subgrade on which it rests; hence the term "rigid." Similarly, a concrete base that supports a brick or block layer might be described as "rigid."　　柔性路面設(shè)計(jì)　　一般來講，路面(和路基)可以分為兩種類型：剛性路面和柔性路面?！皠傂月访妗币辉~在美國(guó)通常指由普通水泥混凝土修筑的道路面層。人們認(rèn)為，混凝土路面可以像梁一樣具有較高的彎曲強(qiáng)度并能夠跨越基層或路基上一些微小的不平整的地帶，因此稱為“剛性”。同樣，支撐磚層或砌體層的混凝土基座也可以說成是剛性的?！　?

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