| The main energy consumption factor of high-rise office building in hot summer and cold winter area is air conditioning operation and artificial illumination,compared with the method of optimizing the construction structure or material in the later stage of architectural design to optimize the performance of high-rise office building,it is more feasible to optimize its shape and epidermis in the prophase of high-rise office architecture.Performance optimization results are also more significant.By controlling the building form,the total solar radiation received by high-rise office building can be effectively improved,and the use of air conditioner is reduced.By controlling the window wall ratio and the window aspect ratio of the epidermis,the proportion of the indoor office space illuminance in the high-rise office building can be effectively increased,and the use of artificial lighting equipment is reduced.The research and practice of energy-saving optimization design of the existing high-rise office buildings mainly exist in the following points: 1.The main focus is on energy-saving optimization of high-rise office building design and low performance optimization.2.performance optimization process is not clear,modeling software,performance simulation software,optimization software with poor coordination,there are duplicate modeling,modification inconvenience and so on.3.can only simulate the simple model analysis,can not cope with the complex reality.In this paper,the shape and epidermis of high-rise office building in hot summer and cold winter area are optimized,and the construction form and epidermis optimization process based on the early stage of architectural design are put forward,and the optimization process is validated and perfected through the real architectural design project.First of all,using the Grasshopper parametric modeling tool,we can generate different types of high-rise office building form and epidermis model by controlling the key parameters of plane shape,plane fillet radius,plane rotation angle,plane scaling ratio and wall proportion.Then,with the help of the Ladybug Building Performance simulation plug-in and the honeybee Building performance simulation plug-in under the Grasshopper platform,the simulation calculates the summer winter two-season total sunshine radiation and the illumination of the high-rise office building.Finally,through the Grasshopper optimization plug-in octopus,the structure and the epidermis are optimized automatically,and the optimum standard is the proportion of the total sunshine radiation and the suitable area of indoor illumination.After the optimization process is presented,in the case of a high-rise office building design project in the industrial park of Zhenjiang Hi-Tech Zone,the author optimizes the architecture form and epidermis under the real design conditions and constraints,and modifies and perfects the relevant parameters and optimization objectives in the optimization process according to the practice.Finally,the feasibility and effectiveness of the optimization process are validated by contrasting the original scheme and the optimization scheme.Based on the early stage of architectural design,aiming at high-rise office buildings in hot summer and cold winter area,this paper puts forward a set of relatively simple,clear and operable performance optimization methods,which improves the performance of high-rise office buildings and reduces the energy consumption of high-rise office buildings during the operation.It has a positive significance for building energy conservation and sustainable development. |
