地基非均匀沉降的可靠度分析

地基非均匀沉降的可靠度分析 English Version

摘要: 本文将地基土看作一随机场,建立了地基非均匀沉降的概率模型,用二阶矩理论求出地基非均匀沉降的均值和变异系数,并进行可靠度分析求出可靠指标β。通过对某住宅楼地基的实测资料进行计算和与实际值比较,得出了与实际工程有益的结论。
- 非均匀沉降 /
- 可靠度分析 /
- 地基 /
- 天然土层 /
- 概率特性 /
- 方差 /
- 随机变量 /
- 测值 /
- 孔隙比 /
- 互相关性
Abstract: Foundation soil was regarded as a random field, and a probabilistic model of the non-uniform settlement of foundation was established. Mean and coefficient of variation of non-uniform settlement of foundation were determined by first-order second-moment technique. Reliability analysis was then performed to compute the reliability index. As an example, the model was used for the calculation of the non-uniform settlement of a building. Values from calculation and measurment were compared and valuable conclusions were drawn.