摘要
Abstract
In recent years, the double-row piles structure is widely promoted and applied in deep foundation pit to meet the needs of intensive and complicated underground projects due to its high lateral stiffness, less deformation and quick construction and the vigorous development of urban underground engineering construction. However, in practical design, there is no unified design method and there exists a certain degree of conservative due to the lack of standard theory to match the structure deformation mechanism with calculation models. With Nanjing Meizizhou Qingao city underground space engineering program and field monitoring data, the deformation mechanism and soil pressure distribution law of double-row pile retaining structure are studied, which is gradually promoted and used in underground engineering field in recent years with finite element computation model. On the basis of this, a practical and reasonable corrected computation model of double-row pile retaining structure is recommended after the comparison and analysis of the widely used Lizheng and Xinguifang double-row pile models. This model structure is featured by clearness, high accuracy, and practical application in engineering design. The model can be easily applied in computation and analysis of double-row pile structure.关键词
深基坑/双排桩/变形机理/计算模型/有限元法Key words
Deep foundation pit/Double-row pile/Deformation mechanism/Computation model/Finite element method分类
交通工程
