Ultra-deep Foundation Anchored Piles In Monitoring And Numerical Simulation Analysis

In recent years, with the rapid development of urbanization in China, the major cities have to plan for super high‐rise buildings. To high‐altitude development and development of underground space, is to save the limited land resources, land use structure adjustment, air defense and national defense construction inevitable choice. So, bring a sharp increase in excavation works. However, there is a foundation engineering: theory behind the practice, theory does not accurately reflect the actual construction of the problem. So deep excavation in the construction process, the full range of security monitoring, accurate forecasting project danger, will monitor the results back to the pit design, development of deep excavation and research has far‐reaching significance. To solve the above problems, this paper describes accordingly from the following four aspects:(1) For deep excavation research in the field of design theory and calculation methods were reviewed.(2) Determination of the deep excavation monitoring system to monitor the project, monitoring methods and monitoring instruments selected monitoring sites design and production, to analyze applications such as monitoring and warning values.To the practical problems arising in the course of the monitoring, prevention and proposed methods to solve.(3) In this paper, specific examples of Shijiazhuang White II of the project, mainly from soil pressure, bolt axial force, slope pile reinforcement force, slope deep pile horizontal displacement of the four areas to be monitored. And to analyze the reasons for the produce corresponding results. Reasonableness and accuracy of numerical simulation testing method of calculating the theoretical design provides a reference basis.(4) Using the finite element software MIDAS/GTS performed numerical simulation study engineering. Focuses on supporting the distribution of pile body deformation with time (during construction) changes were analyzed.