Research On The BIM Optimization Technology Of Construction Scheme For The Crossing Minjiang Interval In The Fuzhou Metro

Shield tunneling machine is used for the tunnel construction of crossing Minjiang interval, the engineering geological conditions and construction organization are complex and major targets control are difficult. The construction process is a highly dynamic process and the construction site environment is complicated. Therefore, under uncertain environment, BIM technology combined with multi-objective optimization theory is used for the multi-objective BIM integrated optimization research of crossing Minjiang interval construction scheme. It has important significance.Firstly, the static construction scheme optimization model is established before construction under fuzzy environment by using network planning technique, multi-objective optimization theory, fuzzy mathematic theory and NSGA2 algorithm, And by using the method of statistical analysis and PDCA circulation control, the dynamic construction scheme optimization model is set up in the process of construction. The BIM model is used to assist decision-makers with construction scheme optimization. Then implement the construction scheme optimization model of crossing Minjiang interval. Taking crossing Minjiang interval for an example, the static construction scheme optimization model is applied. By using NSGA2 algorithm, the Pareto optimal solutions of construction scheme and analysis results are get. In the process of construction, the dynamic optimization of construction scheme and cycle control is conducted. Finally, the BIM integrated information model of construction scheme for crossing Minjiang interval is put into effect. By simulating different construction scheme and visualization analysis, the BIM model is used to assist the optimization of construction scheme and provide a scientific basis for the optimization and decision-making of construction scheme.