Safety Early Warning Research On Foundation Pit Construction Period

Foundation construction relates to the field more and more risk factors during construction, construction is likely to pit unreasonable cause larger security issues. At present, China Foundation construction safety control system is still not mature, Aiming at this problem, the method of software simulation and fuzzy variable combination of theoretical, aimed at the creation of a scientific and practical construction of pit safety warning system. Ideas are as follows:(1) Using the finite element analysis software and pit early monitoring data comparison method of feedback, and constantly improve the model, making the simulation model and the actual project on the deformed trend has a relatively high degree of similarity, and then advance through the model simulation of excavation Next excavation, construction simulation data collection to the next step. The procedure in this article named "Pre-pit data acquisition system", ie a system;(2) Due to construction safety indicators during the excavation and construction of a lot of interaction between the various indicators of each other, but each index mutual influence specific relationship junction is ambiguous. Combined with the actual situation of the construction pit, the introduction of "variable fuzzy theory" fuzzy factor quantitative analysis can be more scientifically handle the pit intrinsic link between factors. In "Variable fuzzy theory" as the basis for the establishment of the system described herein named "Data Processing System", ie System II;(3) System with a combination of two systems "Construction of Foundation Security Early Warning System", the operating principle is: through the system a "pre-pit data acquisition system" multiple parameters and comparing actual project feedback obtained deformation actual dimensional finite element model similar trend, then the next step simulation of excavation pit, collected a total change in value of each pit safety factor analog data will be collected for each safety factor cumulative change in value is substituted into two systems’ data processing system "for scientific computing data processing, and then come to this level of safety case construction pit and put forward the corresponding safety recommendations;(4) The introduction of a construction Case Foundation Guiyang Camp slope, and through the "construction of pit safety early warning system" for a reasonable level determining its safety during construction. Facts prove that "the construction of pit safety warning system" successful "prediction" to the possibility of this security problem, which also provide a reference for safety precautions during construction pit.