温州瓯江口软土地区基坑工程设计案例分析

Case Study of Foundation Pit Engineering Design in Soft Soil Area of Oujiang Estuary

温州瓯江口新区的土质为欠固结的淤泥质软土,强度低、饱和性大、流塑性强,在温州地区基本属于最差的土质,基坑设计难度高。在本工程基坑挖深大、面积广、工期紧、经济性要求高的情况下,创新采用多种支护体系相结合,顺利地完成了地下室施工,为后期瓯江口地区的基坑支护设计提供了一定的经验和参考价值。

The soil of Oujiang Estuary New District of Wenzhou is unconsolidated mucky soft soil with low intensity,high saturability and strong soil plasticity flow. It is basically the worst soil in Wenzhou region and foundation pit design is challenging. In the case of large excavation depth,wide area,tight construction period and high economic requirements,innovative use of a variety of support systems combined so the basement construction was successfully completed,which provides some experience and reference value for later period of foundation pit support design in Oujiang Estuary area.