Automatic Monitoring And Intelligent Warning System For Deep And Large Foundation Pit Based On Feedback Closed Loop Technology

Taking the project of Xinzheng Airport Station as the engineering background,this thesis uses advanced monitoring equipment and computer technology to develop a set of automatic,remote and intelligent foundation pit automatic monitoring and intelligent warning system based on feedback loop method.The proposed new system is able to apply for completing the functions of accuracy,immediacy and continuity of foundation pit monitoring,so as to improve the safety risk monitoring and management ability in deep foundation engineering.The purpose of this paper is to reduce the construction risk,the labor cost and ensure the construction safety for the same type of foundation pit monitoring project.The main research results in this paper are shown in the follows:1.This thesis systematically expounds the technical methods and key technical solutions of the research on automatic monitoring and intelligent warning system of foundation pit,through the research on automatic monitoring and intelligent warning technology of deep and large foundation.This paper puts forward a set of foundation monitoring system which integrates automatic data collection,remote wireless transmission,automatic analysis and processing,advance prediction and intelligent warning system.2.Starting from the actual demand of the field,find and design all kinds of monitoring equipment and sensors which are suitable in the field,and clarify the working principle and method of each component.Based on the projection of Xinzheng Airport,the methods and processes of normal data processing are defined,subsequently,the causes and countermeasures of abnormal data are discussed3.Through the comparative analysis of the measured data of the automatic monitoring system and the measured data recorded by manuals,it is found that the trend of the automatic monitoring data is consistent with that of the manuals,which ensures the authenticity and effectiveness of the data measured by the system.The numerical case concerned with the projection of of Xinzheng Airport Station is subsequently carried out by using Midas GTS NX and Lizheng deep foundation finite element software,and the results are compared with the field automatic monitoring results to verify the accuracy of the finite element simulation.4.Finally,the method of issuing monitoring results is introduced.The setting methods of warning value and process are studied,so that the monitoring results can be fed back quickly and accurately.In addition,the data are converted visually,and a variety of ways are used to warn the management and monitoring personnel on different occasions.