中、法标准承载比CBR试验对比研究

The Comparative Study on California Bearing Ratio (CBR) Test of China and France

本文首先对法国标准中的NFP94-078(1997)、NFP94-093(1999)和中国国家标准《土工试验方法标准》(GB/T50123-1999)进行承载比CBR试验要求进行了对比研究,然后用工程实例,采用两种试验方法进行了CBR试验,用实际试验数据对两种规范因使用土样颗粒特征、仪器设备、操作过程、计算公式、CBR值选取方法等不同带来的影响进行了分析,对工程实际是有一定借鉴意义。

Firstly, this paper makes a comparative study on the CBR test requirements of load-bearing ratio in French standard NF P94-078 (1997), NF P94-093 (1999) and Chinese national standard GB/T 50123-1999. Then the CBR test is carried out by two test methods with engineering examples. Based on the actual test data, the influence of the two specifications on the use of soil particle characteristics, instruments and equipment, operation process, calculation formula, CBR value selection method and so on is analyzed, which has certain reference significance for engineering practice.