Intelligent Identification and Analysis of Dangerous Factors in Bridges Based on FISM-MICMAC Model and Computer Numerical Simulation

The service environment of the bridge column of the sea-crossing bridge is relatively poor, which is easily affected by the construction personnel and construction technology. The sea-crossing bridge is often in harsh weather waters such as strong winds and the current situation is difficult to predict. Therefore, it is particularly important to accurately and effectively identify and analyze the dangerous factors of bridge column construction. Based on the grounded theory, this paper selects 15 crucial risk factors for constructing the bridge column of the sea-crossing bridge from three aspects. The relationship between the indexes and the structure of the index system is analyzed by the fuzzy interpretative structural model-cross-impact matrix multiplication (FISM-MICMAC) method. The relationship between various factors is gradually analyzed and concluded from the perspective of the environment, construction, and human system analysis. The results show that the dangerous factors that play a direct role in the construction of cross-sea bridge columns mainly include the construction site conditions and material and equipment conditions, and the dangerous fundamental factors are the objective influence of natural environment and geological conditions. The proposed FISM-MICMAC model method can better identify the impact and correlation between the various risk factors, and further provide relevant suggestions for engineering practice.