Deep Foundation Pit Support Design And Monitoring Data Analysis

The foundation pit project is a comprehensive and strong temporary project with high risk.How to save the project cost while ensuring the safety of the foundation pit and minimize the impact on the surrounding environment is an eternal project of foundation pit engineering research.Therefore,it is of great significance to improve the design theory of foundation pits,improve the construction technology and the development of monitoring technology.Theoretical research often lags behind engineering practice.Therefore,this paper studies the foundation pit project by combining practical engineering.The main outcomes are as follows:(1)According to the advantages and disadvantages of all kinds of foundation pit supporting structure and construction technology for deep foundation pit engineering of huainan city wanda square concrete support requirements for design and control of groundwater.Combined with the environmental characteristics of the various sections of the foundation pit,this paper adopts the spatial sectional support mode.At the same time,the design software of the deep foundation pit is designed and calculated in detail;It points out the problems that should be paid attention to in excavation and protection of the foundation pit and the potential danger.At the same time,the corresponding construction guidance and response plan were given,and the safety accident was avoided.(2)By means of FLAC3D numerical simulation software without considering the effects of foundation pit space effect and the groundwater situation in view of the area A foundation pit 4-4(POE + pile anchor bracing)section of the excavation and supporting process is simulated.The displacement of the soil body,the structure of the surrounding structure,the change of internal force and the variation of the inner force were obtained.And the environmental changes caused by excavation of foundation pit are evaluated.(3)Detailed analysis of foundation pit monitoring data.The profile of the foundation pit and the internal force of the support structure,the displacement size and the dynamic of the change.Timely detection of safety hazards.It provides an important reference for the adjustment of the support plan and the improvement of the construction process.Provide important guarantee for the safety of foundation pit project.