灌注桩混凝土抗压强度代表值的未确知数分析

Analysis of Representative Value of Concrete Compressive Strength for Cast In-suit Pile Using Unascertained Mathematics

根据未确知数学理论,提出了小样本条件下灌注桩混凝土抗压强度代表值的未确知数分析法.通过5根灌注桩15组混凝土芯样抗压强度试验,并与相关规范进行比较,可以证明上述方法不但能较好地反映灌注桩桩身混凝土抗压强度的实际状况,而且可以给出灌注桩混凝土抗压强度代表值的可信度信息,从而为灌注桩承载力可靠度分析提供方便条件.

The unascertained mathematics was introduce compressive strength of concrete core from cast in-suit p d to analyze the representative values of lie at the condition of small sampling data. The compressive strength of 15 sets of concrete core from 5 cast in-suit piles were tested as a practical example, and compared with the results from relative standards. The results show that the method is not only applicable in assessing the practical states of compressive strength of concrete pile, but can obtain the confidence level of representative values of compressive strength also.