论文部分内容阅读
本校学报1957年度第期1翁朝庆教授提出“论柔性路面的垂直形变公式”一文。在这篇论文内,翁先生认为苏联伊万诺夫教授柔性路面设计理论中的垂直形变公式存在着两个矛盾: (1)形变模量为E_1的路面层的分布压力反尔不如同样厚度的土层(E_0)的分布压力能力; (2)由换算土层后所得的形变量要比路面层在同一深度处所得的形变量大得多。翁先生由于发觉这两种矛盾,他建议把伊万诺夫教授原来的垂直形变公式予以修改。但是,发生这两种矛盾的基本根源,是由于对传力体采用了不同的应力集中系数。在伊万诺夫的柔性路面理论中,路面双层体的应力集中系数与换算当量层后的单一体的应集中系数,都采用了1。但是翁先生则认为在双层体内应力集中系数可以采用1,而在换算当量层后的单一体内则应当采用2.5。因此,所得的结果,自然就不同了。究竟哪一种方式是对的呢?这就是我们要讨论的中心问题。
Our school journal in 1957 1 Professor Weng Zhaoqing proposed “on the vertical deformation of flexible pavement formula,” a text. In this essay, Mr. Weng argues that there are two contradictions in the vertical deformation formula taught by Professor Ivanov in the theory of flexible pavement in the Soviet Union. (1) The distribution pressure of the pavement layer with deformation modulus E_1 is not as good as that of the same thickness (E_0) distribution of pressure capacity; (2) the deformation obtained by the conversion of soil than the pavement layer obtained at the same depth much greater deformation. Due to the discovery of these two contradictions, Mr. Weng suggested that Professor Ivanov’s original formula for vertical deformation be amended. However, the basic cause of these two contradictions is the use of different stress concentration factors for transmission bodies. In Ivanov’s theory of flexible pavement, both the stress concentration factor of the pavement double body and the concentration factor of the single body after converting the equivalent layer are used. However, Mr. Weng believes that the stress concentration factor can be used in the double body 1, and in the conversion of the equivalent layer should be used in a single body 2.5. Therefore, the result obtained is naturally different. Which way is right? This is the central issue we are going to discuss.