预应力混凝土桩锚支护对近邻建筑变形的影响

Study on Deformations of Adjacent Building under the Supporting Structure with Anchor Pre-stress Concrete Piles

以实际工程为例,对深基坑的支护采用预应力混凝土桩锚结构.先对支护结构进行设计计算,根据设计方案,把基坑、支护结构、近邻建筑物放在一个系统中,运用FLAC模拟计算.同时在施工中监测建筑物的变形,对模拟结果与实际监测数据对比分析,证明了支护方案的可行性,为预应力混凝土桩锚支护的设计和施工提供了一定的指导.

According to an instance of deep foundation excavation projects, the supporting structure is designed with anchor pre-stress concrete piles. In this design, deep foundation excavations, supporting structure and adjacent building are put into one system. The deformations of adjacent building are simulated and analyzed by the FLAC. During the construction, the deformations of adjacent building are monitored. By contrasting the simulation results with the results monitored, it is proved that the designed scheme of supporting for foundation pit is feasible, and it gives a direction for the design and construction of deep foundation excavation engineering with anchor pre--stress concrete pile.