Study On Fractal Mimetic Design Of Public Building Skin

Fractal theory originated from fractal geometry,including self-similarity,iterative generation,scale hierarchy,fractal dimension and so on.It has strong discipline vitality and broad application prospects.Architectural design based on traditional European geometry may have a single form,which is due to the lack of scale level and detail level.Fractal architecture theory designs form,function and space from the perspective of generative theory,expands and makes up for the deficiency of system theory,and can effectively solve the problem of insufficient scale of architectural design form based on European geometry.Using fractal self-similarity,iteration generation and scale hierarchy theory,fractal analogy fractal iteration and graphical analysis,this paper explored the principle of fractal geometry and its related basic fractal theory,comb ed the theory and design principle of fractal architecture comprehensively,explored the design principle and generation mechanism of fractal micry of public building skin,and probed into the skin of public building.The design strategy and method of fractal mimetic were discussed.Taking the One Pavilion and Five Centers of Xiangtan as an example,the practice and application of fractal mimetic design method for public building skin were discussed.Fractal Iterative Architectural Design Principle uses simple fractal elements and iteration logic to iteratively zoom architectural space or skin to generate architectural space or skin shape with different scales and levels of self-similarity,and combines them according to the requirements of functional or architectural specifications to form the final architectural space or skin design.Computer can also be used to directly control the iteration parameters.The principle of fractal mimetic design is suitable for building structure design,external form design and internal space construction.It optimizes structural design and reduces building cost,making the building and environment a whole,and creating complex and changeable internal space.Based on Fractal mimetic design theory,building space and structure are scientific,efficient and abundant in form;fractal model of simulating tree branching is established by L-System to maximize the internal use space with fewer structural volumes;by simulating the spatial organization of biological cavity,different scales of building interior space are designed by power-law scaling rules to maximize the size of each room.Landscape and sunshine.Using fractal mimetic method to achieve high efficiency and low energy consumption of the skin function,the skin and structure are integrated into a fractal mimetic design,releasing the indoor space.The fractal mimetic design of multi-layer epidermis generates multi-scale semi-outdoor shared space by controlling the iteration times of the fractal elements of the epidermis.The design strategies of fractal mimicry are divided into concrete fractal mimicry and abstract fractal mimicry.By means of self-similarity isomorphism,concrete fractal mimicry can reproduce prototype vividly,integrate architecture and environment,or convey design conception;Abstract fractal mimicry can extract fractal dimension of a certain kind of thing and simplify Abstract it,form uncertain direction and rich artistic conception,and trigger visitors' association.Think and imagine.Fractal mimetic architecture design is simulated by extracting fractal feature elements of environment,establishing relevant fractal rule models or formulas,forming fractal isomorphism with natural or artificial environment,and efficiently using building materials to organize building space.The method of cultural fractal transforms culture from abstract concept to architectural form or space that can evoke people's emotional resonance and enhance people's cultural identity to architecture.The calculation and analysis of fractal dimension of buildings can overcome the limitations of style and type.From the perspective of fractal scale hierarchy and fractal dimension,we can quantitatively evaluate the degree of environmental integration,form abundance and scale hierarchy of buildings scientifically and effectively.