Based On GIS And The Finite Element Numerical Simulation Of Subway Construction Monitoring And Early Warning Research

As the economy continues to develop, more and more urban population, growing urban traffic congestion, construction of the subway is the solution to urban traffic congestion good way. Due to security concerns subway deep excavation and its impact on the surrounding environment, so the metro construction monitoring is essential. Subway Construction Monitoring by monitoring instruments and inspection checks construction(structures) on the construction process of information gathering and analysis, construction safety issues to make an objective evaluation.Metro monitoring project numerous and long construction period, large amount of monitoring data, how to effectively manage and analysis is an important issue to be studied. With the continuous expansion of the detection technology, computer technology and three-dimensional GIS technology, people on the subway construction monitoring data collection, management and analysis of both the new demand. For subway construction monitoring characteristics and requirements, we developed a three-dimensional article subway construction monitoring and early warning systems and successfully applied to the Shenzhen Metro Line 9 construction monitoring process.(1) Introduces the subway monitoring technologies and subway construction monitoring and early warning systems related to technology, design needs three subway construction monitoring and early warning systems, the overall objectives and functions; and key technologies and implementation of the system has been the focus of research: the use Developer Express controls system interface design, database design Geodatabase, monitoring the results of three-dimensional visualization, monitoring and early warning function to achieve predictive finite element results visualization capabilities.(2) The use of professional Sketchup modeling software to build three-dimensional models, and 3D model texture mapping and rendering, restore the subway pit in which three-dimensional environment, showing the true three-dimensional effect.(3)The results with the measured data describes the ABAQUS finite element software and the principles of construction monitoring and early warning, and Shenzhen People's South Station subway, for example, deep foundation pit excavation process was simulated, and the simulation for comparison verification and analysis, shows that the accuracy and usefulness of the 3D simulation model. Improve early warning function subway construction monitoring and early warning system based on ABAQUS simulation results and the main function of research and development of three-dimensional subway construction monitoring and early warning systems were evaluated.