静载试验成果的概率分析

PROBABILITY ANALYSIS OF STATIC LOAD TEST RESULTS

通过分析给出了地基(或单桩)承载力均值在给定置信度下的置信下限,并对按静载试验取用特征值的安全度进行了概率分析。结果表明,按现行规范,可靠度指标将不小于2.32。对地基静载试验值的极差超过规范规定的情况下,可以根据此方法按照保持可靠度指标不变的原则取用承载力特征值。

It is given the confidence lower limit of the bearing capacity average of a foundation (single pile) under given confidence using an analysis; and a probability analysis is also done for the safety of the eigen value taken according to a static load test. The results show that reliability index will be not less than 2.32 by current codes. In case of the range of the static load test value being over that in a code, then the given value of the bearing capacity may be taken in accordance with a constant reliability index specified by the method in this paper.