一种测试粘土路基弹性模量的简易方法

路基土弹性模量是道路工程中一个很重要的参数,其值在现阶段一般用重复荷载三轴试验测定,既昂贵又耗时.文中介绍了一种新的测试方法——DCP测试法,只要测出DCPI值便可测试出路基的弹性模量.同时,通过试验结果的分析,不但找出了影响DCPI值和弹性模量的因素,而且还证明了该方法在实际工程中是切实可行的.DCP试验作为一种新的原位测试土工试验方法,具有简单、快捷和经济等特点.

Simple Method to Evaluate Resilient Modulus of Subgrade Cohesive Soils

As we know,resilient modulus is one of the most important parameters in the road engineering.The resilient modulus of subgrade soil normally can be estimated from the laboratory repeated load triaxial test.The tests are expensive and time consuming.In this article,a new method is introduced i.e.dynamic cone penetration test to predict resilient modulus of subgrade cohesive soils.By analyzing test results,the factors affecting the value of DCPI and resilient modulus are found,it is proved that the test will be successful in practical use.Although the test is simple,rapid and economical,the application of the dynamic cone penetration test in evaluating the resilient modulus of subgrade soils is not well known.