十字板剪切试验实测指标的修正方法及应用

Correction method and application of the measured indicators of the vane shear test

针对现场十字板剪切试验实测指标的修正问题,阐述了目前中国与欧洲所采用的各种修正方法。通过工程实例,对中欧修正方法进行了应用介绍,并且对各种方法确定的修正指标进行对比与分析。结果表明:欧洲采用的固结状态分区图法,所确定的修正指标为实测指标的55%~75%,在各种评价方法中最低,并且与土的长期强度与峰值强度的数值关系基本吻合。固结状态分区图法指标安全可靠、方便快捷且易于操作,建议在实际应用中采用。

In view of the correction of the measured indicators of the field vane shear tests,this paper expounds the various kinds of correction methods adopted in China and Europe.By the engineering examples,the various kinds of correction methods are compared and analyzed in detail.The results show that:the correction indicator is55%~75%of the measured values using the European consolidation partition graph method which is the lowest among various correction methods,and it is generally conform with the numerical relationship between the long-term strength and peak strength of the soil.The indicator of consolidation partition graph method is safe and reliable,and the method is convenient and easy to operate,so it is recommended in practice.