论文部分内容阅读
针对基坑工程中渗流作用下基坑整体稳定性分析这一难点,在考虑基坑邻近水体水位变化及其非稳定渗流的基础上,同时考虑连续墙的影响,对常规边坡临界滑动场法进行改进,提出邻近水体多层地基深基坑整体稳定分析方法。以合肥地铁1号线大东门站基坑工程为依托,分析了邻近水体水位变化及其渗流作用下基坑开挖过程中整体稳定性变化,并与圆弧滑动法计算结果进行比较。结果表明:该方法可搜索出任意形状危险滑动面,相比于传统设计方法假定圆弧滑动面更合理,计算结果也更可靠;渗流作用是影响邻水基坑整体稳定性的主要因素之一,渗流场的变化会造成滑动面位置的改变。
Considering the difficulty of the overall stability analysis of foundation pit under seepage in foundation pit engineering, taking into account the change of water level near the foundation pit and its unsteady seepage, taking into account the influence of continuous wall, To improve the overall stability of deep foundation pit of multi-layer foundation near water. Based on the excavation project of Dadongmen Station of Hefei Metro Line 1, the variation of water level near the water body and the change of overall stability during excavation of foundation pit under seepage are analyzed, and the results are compared with the results of circular slide method. The results show that this method can search for dangerous sliding surface of arbitrary shape, which is more reasonable than the traditional design method assuming the arc sliding surface and the calculation result is more reliable. The seepage effect is one of the main factors affecting the overall stability of the adjacent water pit , The change of seepage field will cause the change of sliding surface position.