Research On Energy-saving Based On Form Optimization Of High-rise Office Buildings In Cold Regions Driven By Sunlight Radiation

At present,the construction of high-rise office buildings in severe cold regions in China is large and tends to be intensive.With the rapid development of construction process,the contradiction between building energy-saving demand and extreme cold climate conditions in cold regions has become increasingly prominent.Architects and planners need to create ecological,comfortable city and architectural environment from a new perspective and with the help of the development of multi-disciplinary achievements.With the help of performance-driven design theory and technology,this paper aims to establish a set of multi-objective optimization design method for the configuration of high-rise office buildings in cold regions,taking the minimum solar heat gain in summer and the maximum solar heat gain in winter as the design objectives.Firstly,the plane and spatial morphological characteristics of high-rise office buildings in cold regions are studied,and the quantitative index of their morphological design is obtained.Combining with the field investigation and the requirements of relevant design codes,the expansion range and step size are constrained.Rhinoceros and Grasshopper are used to translate the physical buildings and their surrounding environment into the typical parametric model.Secondly,based on solar radiation,with the help of Ladybug & Honeybee,the calculation of solar radiation heat in winter and summer for high-rise office buildings in cold regions is carried out,and driven by this performance index,the architectural form is evaluated.Finally,the parametric model and performance objectives are translated into biological concepts in Octopus,a genetic algorithm platform.Based on genetic algorithm,the multi-objective optimization problem of configuration is studied,and the results of the above operations are visually fed back and recorded.After verifying the advantages of the multi-objective optimization method,according to the Pareto frontier and the range characteristics of high-rise office buildings in cold regions,the numerical distribution characteristics of design parameters are analyzed,and the general strategy of high-rise office buildings group design in cold regions based on solar radiation is put forward.This paper puts forward the principle of optimum scheme selection of high-rise office buildings in cold region based on genetic algorithm,and carries out the final scheme selection on this basis.