BIM Technology Research On Deep Foundation Pit Supporting Engineering Of City Subway Station

The development and utilization of urban underground space is an important direction of the development in recent years,the subway,underground shopping malls,underground garage of a large number of construction of deep foundation pit engineering is more and more,the depth is also more and more big.The foundation pit supporting system is becoming more and more complex,using the support system of the three-dimensional data information model,based on the BIM information management is the research direction of super deep foundation pit engineering.Taking a subway station project as an example,this paper does the following research work:1.the use of Revit software Create subway station foundation pit support system of BIM model structure,elevation settings and control axis network,create fender piles,retaining walls,layer of concrete,concrete support and steel pipe support member initial modeling of.2.For the system family type component is not included in the structural components,such as 45 C steel waist beam,after the definition of Revit in to create,and set the relevant parameters,save the load model file,complete the BIM modeling.3.The geological conditions are simplified,the structural foundation of the floor of this component to simplify the simulation strata,marking the formation of cohesive strength,internal friction angle,compression modulus and other parameters of information,complete geological modeling.4.According to the BIM model of subway station foundation pit system,"collision detection",check the support structure of the collision and intersection problem,and according to the collision point ID returns model to modify,eliminate hidden dangers.5.According to modify the model,create support within the quantity and size of the list,with the supporting system of BIM model file changes,schedule automatic updates.6.See the BIM model,analysis of data,the complex content through the image expression,clear and easy to read.According to the model view,calculating the stability of foundation pit supporting system,to realize information sharing and transmission.Through the data analysis function of the model to detect the collision problem and make the modification and improvement,reduce the rework caused by design errors and the change of the drawings.Automatic update of the model file changes to the schedule,the effective control of the project budget,to achieve the construction cost of real-time monitoring,so that information technology.