# Construction and Application of Safety Management Scenarios at Construction Sites
## 5 Conclusions  
This study proposes a method and idea for enhancing construction engineering construction site safety management through the integration of BIM and GIS technology. By overlaying and analyzing safety management scenarios constructed during different construction phases, it determines the relatively safe areas and the more dangerous areas in different construction stages of the construction site. This approach aims to ensure the safety of personnel, materials, and machinery at the construction site. The following conclusions can be drawn from the study:  
(1) This study proposes a method for comprehensively considering various factors in construction site safety management, including natural conditions such as air quality, temperature, wind speed, and wind direction, as well as man-made conditions, including machinery, materials, and software parameter settings. It also considers the spatial and temporal effects of construction projects, building height, and seasonal changes on the construction site. (2) In spring and summer, the northern and western sides of the construction site are generally in the wind shadow area, resulting in low wind speeds. Conversely, in autumn and winter, the southern and western sides of the construction site are more often in the shadow zone, again with reduced wind speeds. The wind speed is higher along the central path of Plant Nos. 4 and 5 throughout the year. However, in autumn and winter, it is further increased by the narrowing effect of the buildings' height and length at different stages of construction, combined with the group bypassing phenomenon generated by air currents at the construction site. This scenario results in increased wind speeds and the formation of corner winds. Areas with high wind speeds and high temperatures on site are prone to fire accidents. In the event of a fire, downwind fires will be larger than upwind fires, and fire fighting measures should be installed upwind. (3) The hazardous areas of the construction site are mostly located in areas with higher wind speeds and where an overlap of machinery and material secondary buffer zones occur. Conversely, the relatively safe areas are mostly situated in regions with lower wind speeds and where no overlap of machinery and material buffer zones occur or in areas within the inner primary buffer zone. In spring and winter, the hazardous areas of the construction site are the east side of Plant No. 5 and the north side of Building No. 1, while in summer, it is the east side of Plant No. 5. In fall, the east side of Plant No. 5 and the north side of Building No. 2 are hazardous areas. In spring and summer, the relatively safe area of the construction site is the north side of Plant No. 4. In fall, it is the east side of Building No. 2. In winter, the east side of Plant No. 4 and Building No. 2 is a safe area. This study is a preliminary exploration of integrating BIM and GIS technology into the field of construction site safety management in construction projects, but limitations persist. First, this study utilizes CFD wind environment simulation. For the climatic conditions of the construction site, the data from the official website of the National Meteorological Information Center were used, and the highest temperature, wind speed and wind direction occurring in each of the four seasons were selected. Subsequent studies can use relevant measuring instruments on site to obtain dynamic and continuous climatic data for simulation to more adequately capture the complexity and dynamic nature of the environment at the construction site. Second, in simulating the spatial and temporal safety of personnel, materials, and machinery at the construction site, this study primarily focuses on the overlap of scenario results to determine the relatively safe and hazardous areas. Future research can be optimized following the analysis results in the layout of construction sites.