Research On Generation Algorithm Of Building Composite Skin Based On Light Environment Optimization

In the technical background of parametric design and the social background of sustainable development,with the maturity of algorithm design and performance-driven design methods,buildings are becoming more complex and non-standardized.The architectural skin is an external expression of the aesthetic characteristics and cultural characteristics of modern architecture.At the same time,as an important interface for regulating the physical environment inside the building,its design methods and design goals are increasingly diversified.The logic rationality,rapid modification and extensibility of the algorithm under the guidance of the emerging geometry make it widely used in the construction of the composite skin of the building.At the same time,the form and performance can be better balanced achieved by the synergy of the multi-objective optimization algorithm.Therefore,it is particularly important to study which algorithm is used and how to implement the algorithm to study the shape of the building composite skin.This study takes the development direction and type of building composite skin as the starting point,explores the design characteristics of building composite skin in parametric design environment;deeply studies parametric design and shape algorithm,summarizes and extracts it suitable for building skin shape,and a set of reusable algorithm database is constructed.Taking the optimization of architectural light environment as an example,the plasticity of multi-objective optimization of building composite skin is explored,so that the designer can take care of the form of the building skin and the internal performance of the building under its influence in the early design stage,so that rapid program comparison and selection can improve design efficiency.Based on this,this study mainly carried out the following parts:First of all,through the literature reading and case collection,the development history of the building skin is traced back,and the development trend of the current building skin is proposed.By sorting out a large number of Pioneer firm’s architectural skin practice cases,the omposite skin is divided into two types: variable and fixed.The composition characteristics of each type of epidermis were analyzed in turn,and the actual cases were interpreted.(Chapter 2)Secondly,the ontology of algorithm design is discussed,including the concept of algorithm design and design flow,which clarifies the characteristics and advantages of algorithm design.Combined with the construction field,it enumerates the application of algorithm design in different design stages.This paper introduces the algorithm design technology platforms Rhino,Grasshopper and Ghpython used in this paper,and expounds its operation principle,function characteristics and application scope.(Chapter 3)Thirdly,through the interdisciplinary principle analysis and algorithm modeling,the biomorphic algorithm applicable to the composite skin is clarified and classified into six types: mosaic,fractal,folding,polygon,weaving and interference.It is implemented by the algorithm design platform,making it an algorithmic rule that can be applied repeatedly.Then from the logic of the algorithm,the current building composite skin design of various pioneers is analyzed and introduced.(Chapter 4)Finally,multi-objective optimization experiments were carried out using modeling simulation and statistical analysis methods.Based on the generation algorithm of building composite skin and the optimization theory of architectural light environment,the two are integrated into a complete optimization design work method,and the architectural shape of Guangzhou International Financial Center is selected as the object.An algorithmic workflow is established to make it a biometric,reusable,and scalable biomorphic program.Combined with statistical analysis of data,an optimization design strategy is proposed.(Chapter 5)...