沿海地区复杂地层抗拔桩在深基坑中的试桩实例

Testing Examples of Uplift Piles for Deep Excavation Bracing in Complex Formation of Coastal Area

通过沿海地区复杂地层中抗拔桩试桩实例,介绍了抗拔试验桩试验参数与方法以及深基坑中的抗拔桩施工技术:填石夹填土层成孔技术、桩端岩心取样技术与桩基清孔技术。试验表明,抗拔试验参数较为可靠且能满足结构设计的抗拔要求,为抗拔桩在深基坑中的应用研究提供了数据支撑。

Through the testing examples of uplift piles for deep excavation bracing in the complex formation of coastal area,the test parameters and methods are introduced,as well as the uplift pile construction technology of deep excavation bracing,such as boring technology in rockfill formation with soil,core sample taking at the end of pile and pile hole cleaning.The test data show that the test parameters of uplift are reliable and can meet the requirements of float resisting capability of the structure design,which provides the data support for the application of uplift pile in deep excavation.