深基坑岛式与盆式土方开挖方法相结合的实际应用

Practical Application of the Combination of Island Excavation with Basin Excavation Methods in Deep Foundation Pit

在建筑工程中,有内支撑的基坑开挖应根据基坑的面积、深度、周边环境、内支撑形式等因素采取不同的开挖方法,大多采用岛式开挖、盆式开挖、分层分块的开挖方式。深基坑岛式与盆式相结合的土方开挖方法是基坑竖向各分层土方采用岛式和盆式进行交替开挖的一种组合方式。以某工程深基坑土方开挖为实例,对岛式与盆式土方开挖相结合的方法做简要介绍。

In engineering construction, excavation methods vary to the factors as area, depth, surrounding situation and in- ner supporting form of the foundation pit, among which island excavation, basin excavation, layered and blocked excavation are mostly taken. The excavation method of combining island excavation with basin excavation of deep foundation pit is an combination method of the foundation pit excavation with alternative use of island excavation with basin excavation along the vertical dimension. Finally based on engineering practice, the combination method of island excavation with basin excava- tion is introduced briefly.