应用落锤式弯沉仪评价土基模量的试验研究(英文)  

Experimental Study of Estimating Sub-grade Moduli by Falling Weight Deflectometer

作　　者：潘放[1] 陈少幸 张肖宁[1] 

机构地区：[1]华南理工大学道路工程研究所,广州510641 [2]广东交通集团检测中心,广州510420

出　　处：《科学技术与工程》2007年第17期4392-4397,共6页Science Technology and Engineering

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。Resilient modulus （Eo ） is an important parameter for pavement design. Eo 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 Eo by bearing plate in situ. The correlation analysis between elastic moduli by FWD back-calculation and Eo was processed. Study feasibility of prediction sub-grade Eo immediately by FWD test results. The result indicates that it is viable in some degree.

关 键 词：土基 回弹模量 FWD 弹性模量 相关性分析 

分 类 号：U416.222[交通运输工程—道路与铁道工程]