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本文分析了目前在单、双桥探头对比统计时各种混乱现象,如两种探头对比时不同尺寸的组合;不同结构类型加工精度的组合;统计时不同分层方法和不同的变量选择等。针对这种现象,本文用80多组单、双桥探头对比试验,同一探头的平行试验的实例计算,说明了以上各种因素对统计结果的影响,以及土层不均匀性的影响。并从实用角度出发,提出了对分层方法、变量选择和统计公式选择的看法。最后提出了铁路系统所用、单双桥探头的对比方法和结果。
This paper analyzes the various chaos phenomena when comparing single and double bridge probes, such as the combination of different sizes when comparing two kinds of probes; the combination of processing precision of different types of structures; different stratification methods and different variable selection during statistics. In view of this phenomenon, this article uses more than 80 sets of single- and double-bridge probes to compare tests, and parallel probes for the same probe to calculate the impact of the above factors on the statistical results, as well as the effects of soil inhomogeneity. From the practical point of view, it put forward the views on the choice of stratification methods, variable selection and statistical formulas. Finally, the comparison methods and results of the single and double bridge probes used in the railway system are presented.