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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 test results of British Standard (BS) standard equipment in the domestic geotechnical design, the British standard and Chinese standard (GB) standard equipment and test results were analyzed to study the correlation. The main difference between the BS and the GB standard equipment is that the hammer mass of the former is greater than that of the latter, resulting in the difference between the hammering energies of the two during the test. Therefore, the number of standard penetration shots obtained is different. Through the use of standard energy analyzer, measuring the actual hammering energy of the BS and GB equipment with different diameters of drill pipe, the energy ratio of the two different actual hammering energy and theoretical hammering energy is calculated, and the difference of energy ratio Analyze the correlation between BS and GB standard penetration number and establish the relevant formula. Analysis shows that the BS standard equipment during the test than the GB standard equipment to hammer the hammer pass energy is smaller, the number of coherent hit to be large; drill diameter of 50 mm than the diameter of 42 mm transmission hammer energy slightly higher, The number of hits is slightly lower. Through the research, the relationship between BS and GB standard equipment test results was finally established. The data obtained from the British standard standard equipment can be better applied to Chinese standards and provide the geotechnical design parameters that are in line with China’s benchmarking.