Abstract:Research purposes: The current investment estimation methods for transportation construction projects are difficult to accurately reflect the complexity, nonlinearity and the characteristics of the whole life cycle of transportation construction projects. Taking Xibaipo-Fuping Expressway as an example, this paper comprehensively uses PSO, BPNN, FIS and BIM three-dimensional technology to carry out the whole life cycle cost estimation and investment option comparison of transportation construction project. Research conclusions: (1) The traffic construction project investment estimation information database is established to provide certain historical data for the selection of investment plans. (2) Combining the characteristics of the proposed project, using the PSO method to screen out similar projects, based on BP neural network model, this paper separately predicts its construction cost and operating cost in the next 20 years, and then uses FIS to predict its operating cost in the next 21~100 years, combining three parts of data to obtain the whole life cycle cost. (3) From an economic point of view, with the best life-cycle cost as the decision criterion, BIM three-dimensional technology is used to establish a visual model of the investment plan, so that decision makers can find the best one. (4) The research result can provide a reference for the decision-making of investment plans for transportation construction projects.
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