【摘要】 土基回弹模量是路面设计的重要参数,实验室内测定土基回弹模量的方法为重复荷载三轴试验,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。更多还原

【Abstract】 Resilient modulus (E0) is an important parameter for pavement design. E0 value is generally obtained by conducting repeated load tri-axial tests in laboratory or bearing plate test; automated dynamic cone penetrometer in situ etc. because of the complexities encountered with the above tests. Testing sub-grade by FWD and calculating elastic modulus by deflections, also testing E0 by bearing plate in situ. The correlation analysis between elastic moduli by FWD back-calculation and E0 was processed. Study feasibility of prediction sub-grade E0 immediately by FWD test results. The result indicates that it is viable in some degree.更多还原