Design and research of 3D visualization system for building operation and maintenance based on BIM technology
In view of the low accuracy of passenger flow prediction of large commercial centers,which leads to poor real-time monitoring and security warning of commercial centers,a three-dimensional visualization system for building operation and mainte-nance based on BIM technology is proposed.Firstly,the B/S architecture and Cesium open source map engine are used to design the overall structure of the system;then use BIM technology to build a 3 D visualization model of a large commercial center;finally,propose the indoor space-time passenger flow prediction method based on CNN network+LSTM network to predict the passenger flow of the commercial center,and finally realize the real-time monitoring and safe operation and maintenance of the commercial center based on the prediction results.The experimental results show that the prediction mean variance of the proposed CNN+LSTM net-work model remains within the range of 2.14 to 3.58 between 10 minutes and 120 minutes,which is lower than the prediction mean variance of the traditional ARIMA prediction model and random forest prediction model,indicating that good prediction effect can be achieved by this method.After the system development of the Web platform based on CIM technology as the core,the designed system can realize the functions of passenger flow prediction and display,spatial analysis and security monitoring of the commercial center,which can improve the three-dimensional visualization effect of the large commercial center.
BIM technologybuilding operation & maintenance3 D visualizationLSTMpassenger flow forecast
万方数据
维普
