论文部分内容阅读
土基回弹模量是路面设计的重要参数,测定土基回弹模量实验室内的方法为重复荷载3轴试验,野外测试的方法有承载板、动态锥等方法,上述方法操作起来都比较复杂。利用FWD(落锤式弯沉仪)测试土基计算弹性模量,再用国内常用的野外承载板试验测定土基回弹模量,分析FWD弹性模量和回弹模量之间的相关性,研究FWD直接预测土基回弹模量的可行性。结果表明该方法具有一定的可行性。
The elastic modulus of soil foundation is an important parameter of pavement design. The method of testing the modulus of elasticity of soil foundation is three-axis repetitive loading test. The methods of field testing include loading plate and dynamic cone method. quite complicated. The elastic modulus of soils was measured by FWD (drop-weight deflection), and then the modulus of elasticity of soil-subgrade was measured by the commonly used test of field carrying board in China. The correlation between the modulus of elasticity of FWD and the modulus of elasticity was analyzed , The feasibility of using FWD to directly predict the rebound modulus of soil foundation was studied. The results show that the method has some feasibility.