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一、设想目前我国柔性路面设计对新建路面采用双园均布垂直荷载下的弹性层状体系理论公式计算厚度,其主要的设计参数是路面材料回弹模量E_1值;旧路补强厚度设计系用三参数经验公式,主要的设计计算参数是β值。E_1和β都是反映路面材料性能的参数。宁波地区设计补强层是套用交通部从全国范围调查、归纳整理提出的β值,它有个从低值到高值的幅度,从宁波近海地区的气候、自然条件、矿料性质及施工条
First, suppose that the current flexible pavement design in our country uses the theoretical formula of the elastic layered system under the uniform load in the double-park for the new pavement to calculate the thickness. The main design parameters are the elastic modulus E_1 of pavement materials; Department of three-parameter empirical formula, the main design calculation parameters is β value. Both E_1 and β are parameters that reflect the performance of pavement materials. The design reinforcement layer in Ningbo covers the β value proposed by the Ministry of Communications from a nationwide survey and summarization. It has a range from low value to high value. From the aspects of climatic conditions, natural conditions, mineral resources and construction conditions in the coastal areas of Ningbo,