不同水位线下临坡基坑受力变形特性研究

Research on Deformation and Stress of the Foundation Pit Adjacent to Landside under Different Water Level

随着基坑工程场地环境越发的复杂,临坡基坑的工程安全越来越被工程师们所关注。文章针对镇江市某临坡基坑进行有限元受力变形分析,结果表明:基坑开挖破坏了边坡原有的土压力平衡状态,边坡稳定性的变化取决于围护桩的刚度;由于临近边坡产生了不平衡土压力,基坑受力变形增大,变形往一侧偏转;降低水位能够有效减小基坑围护结构的受力变形,从而保证工程施工的安全。

With the around environment of foundation pit more complex, the engineering safety of the foundation pit adjacented to landside is concerned by more engineers. A finite element stress analysis is carried out for this type of the foundation pit in Zhenjiang City. The results indicate that the excavation of the foundation pit destroyed the balance of the original earth pressure and the slope stability depends on the stiffness of the retaining pile. Due to the unbalanced earth pressure at the adjacent slope, the deformation of the foundation pit is increases and the deformation is deflected to one side near the slope. Descending water level can effectively reduce the deformation of the foundation pit structure and ensure the safety of the construction.