英标和国标标贯设备试验结果相关性分析  

Correlation analysis of standard penetration test results on British and Chinese standard equipments

作　　者：廖先斌[1] 郭晓勇[1] 杜宇[1] 

机构地区：[1]中交第四航务工程勘察设计院有限公司,广州510230

出　　处：《岩土力学》2013年第1期143-147,共5页Rock and Soil Mechanics

摘　　要：为了在国内岩土设计中很好利用英国标准(BS)标贯设备的试验结果,对英国标准和中国标准(GB)标贯设备及试验结果进行分析,研究相关性。BS和GB标贯设备主要的区别是前者的锤垫质量大于后者,造成试验时两者锤击能量有差别,因此,获得的标贯击数不同。通过采用标贯能量分析仪,测量配置不同直径钻杆的BS和GB设备试验时的实际锤击能量,计算两者不同的实际锤击能量与理论锤击能量的能量比,利用能量比的差别分析BS与GB标贯击数的相关性,建立相关公式。分析显示,试验时BS标贯设备比GB标贯设备的锤击传递能量要小,标贯击数要大;钻杆直径为50 mm比直径为42 mm传递的锤击能量略高,标贯击数略低。通过研究,最终建立了BS与GB标贯设备试验结果的相关关系,英标标贯设备获得的数据从而能更好运用于中国标准中,并提供符合中国利用标贯评价的岩土设计参数。In order to make good use of the standard penetration test（SPT） results on British Standard（BS） equipment during the Chinese geotechnical design,BS and Chinese Standard（GB） SPT equipment and results are analyzed to evaluate their correlation.The main difference between BS and GB equipment is that BS anvil quality is larger than GB;and different hitting energy and SPT values are caused.SPT analyzer has been used to measure the actual hitting energy of SPT on BS and GB equipments configured with different diameter rods.In order to analyze the correlation between SPT values of BS and GB,and establish correlation formula,the BS and GB energy ratio that actual hitting energy was divided by theory hitting energy are calculated.The conclusions are as follows： BS equipment is smaller hitting energy and the value of SPT is higher than GB equipment.The rod 50 mm in diameter has higher hitting energy and smaller value of SPT than the rod 42 mm in diameter.Correlation of the standard penetration test results on BS and GB has been set up.Therefore the data based on BS SPT equipments will be more reliable to be utilized in GB and also evaluate the appropriated geotechnical parameter in terms of GB SPT results.

关 键 词：标贯试验(SPT) 英国标准(BS) 中国标准(GB) 锤垫质量 锤击能量 

分 类 号：TU411[建筑科学—岩土工程]