In order to solve the problem of quantitative analysis of the impact of greening facilities on outdoor near-ground temperature, the author proposed the simulation analysis and design optimization of campus outdoor thermal environment under the compound energy supply system. On the basis of UAV aerial survey data, ENVI-met was used to establish two schemes of actual and non-vegetation in the study area, and the thermal environment was simulated and compared. The experimental results show that: UAV tilt photography can quickly obtain orthophoto images and high precision 3-D information of the research area, and ENVI-met modelling is more flexible and cheaper. The correlation coefficient between the results and the measured results is >0.9, and the root mean square error is 0.6?C, the simulation results can reflect the distribution of temperature in the study area well. Vegetation and turf had obvious cooling effect, the area of high temperature area (>36 ?C) in the study area without vegetation increased by 34%, the area of predicted mean vote (PMV > 4.5), which is an evaluation index of human thermal response (cold and heat sensation), increased by 17%. In the vertical direction, the cooling effect of vegetation on the ground can be extended to 15 m. In conclusion vegetation and greenery can reduce the temperature near the ground through transpiration, effectively improve the urban thermal environ?ment, and improve human comfort.
This article solves the problem of China's construction industry adopted by the traditional extensive construction mode for a long time. The traditional methods was falling behind as they have the largest number of accidents among various types of safety accidents in the construction industry. This paper puts forward a new mode of fine construction management based on BIM. This article depicts the experimental analysis considering 277 accidents of falling from height, accounting for 54% of the total. There were 72 collapse accidents, ranking second among all types of safety accidents in the construction industry. It further discusses the application measures and benefits of BIM Technology in fine management from four aspects of quality management, schedule control, cost management and safety management. It is demonstrated from experimentation that BIM Technology has brought good economic and social effects to aid fine management.Povzetek: S strojnim učenjem in pomočjo BIM tehnologije so bile analizirane nesreče v kitajskem gradbeništvu.
Some models are established by ANSYS in this paper. Finite-element analysis was used for these models, which include circular hole castellated columns with expansion ratio being 1.4 or 1.5, solid-web steel members without expansion. And then, buckling analysis for the models under axial compression is carried out. So the bearing capacity for compressive members are obtained and analyzed.
In order to further improve the efficiency of sorting robots, an algorithm based on artificial intelligence design is evaluated. On the basis of determining the design requirements of belt conveyor and motor selection, the reverse device and return device and camera bracket sorting car are redesigned, and the sorting car is further analyzed by finite element method. All programs are written based on PLC. The results show that the recognition and sorting rate of 100 express surface orders with the same specifications reaches 100% and the sorting rate reaches 94% by analyzing the data recorded in the database, and the average time consumed in each recognition process is 0.0493097 s and 0.047133 s, respectively, in basic and simulated recognition. The difference did not exceed 0.01 s, and the time was basically the same. Therefore, the scheme verifies the rationality of mechanical structure design, visual scheme design, and control system design.
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