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近年来,在伊万诺夫教授领导下所拟订出来的柔性路面设计理论已经广泛地在我国得到了运用,但如何合理地使用这个理论,使之与中国的实际情况更好地结合起来,我们还是不能满意的。为了解决这一问题,同时也为了更深入地研究理论,我们必须制备一些必要的工具,路基、路面垂直应力测定仪就是其中之一。对于新创设的仪器必须满足一系列的要求,如测量元件的敏感性,大小;测量元件的刚性与土壤刚性的关系;应力与应变的协调性;它的坚固性,耐久性,使用上的简便和价钱是便宜的等等。我们选择了硫化镉半导体(光敏电阻)作为垂直应力测量的基本元件,通过它使得非电量(应力)转变成电量(电流)。我们认为工作还进行得很不深入,今后主要应该解决实地如何使用的问题。我们希望热心于柔性路面设计理论的同志们共同努力来完成这一任务。
In recent years, the theory of flexible pavement design developed under the leadership of Professor Ivanov has been widely used in our country, but how to use this theory rationally and make it better integrated with the actual situation in China, we Still can not be satisfied. In order to solve this problem and to further study the theory, we must prepare some necessary tools. Subgrade and pavement vertical stress tester is one of them. For newly created instruments, a number of requirements must be met, such as the sensitivity and size of the measuring element; the relationship between the rigidity of the measuring element and the rigidity of the soil; the coordination of stress and strain; its robustness, durability and ease of use And the price is cheap and so on. We chose a cadmium sulfide semiconductor (photo resistor) as the basic component of vertical stress measurement, through which non-electrical (stress) energy is converted into electricity (current). We think the work is still underdeveloped. In the future, we should mainly solve the problem of how to use it on the ground. We hope that all those comrades who are enthusiastic about flexible pavement design will work together to accomplish this task.