| The modular building is based on a single room as a modular unit.The unit is prefabricated at the factory,transported to the site for installation,and assembled into a complete architectural form with a reliable connection.As an emerging construction system,modular building has huge advantages in economic,environmental protection,energy saving and construction cycle efficiency.It has a broad development prospect and become one of the key development directions in construction field.However,module building started late in our country,and the relevant technical and research materials are scarce.There is still a lot of research space in the modular building layout design,plane optimization system,and the whole module structure.This paper takes five-story modular building residence as an example,starting from the plane size and structural stress characteristics of the steel structure modular building as an entry point,and explores the completed chain of architectural plane size arrangement under the limited conditions of minimum steel consumption and minimum building energy consumption.It forms the unique modeling method and multi-objective optimization method of the modular building,and obtains the optimal type of the modular building residence under the structural bearing capacity requirements.The main significance of this study is as follows:(1)Proposed a modular building parametric plane modeling and analysis method;(2)Using parameterized platform and programming language to initially realize structural intelligent design and optimization,and providing possibilities and guidance for future structural intelligent design and application of structural intelligent software;(3)Combining building design,building technology and building structure in modular building residences,and generate optimal solution sets that satisfied the characteristics of modular building through multi-objective optimization.First of all,the article mainly proposes a modular building modeling method.The modeling is mainly through Rhino&Grasshopper to generate experiments.According to the characteristics of the module units and user needs to plan the layout of the residential plan.Based on the completion of the experimental objects,the room is used according to the functions,constraints,adjacencies,and other conditional modeling to generate residential layout forms,combining modular building with building plan generation technology,and explore the unique building generation rules and modeling methods of modular buildings,providing guidance methods for design.Secondly,with the help of the finite element design plug-in Karamba,and the structural intelligent design and automatic optimization are realized through the python language.The optimization process uses Galapagos to perform single-objective optimization of the structural steel consumption of modular buildings and residences.The independent variables are the length and width of each room and the size of structural members.The effect of the length and width of each room on the structural steel is studied.The analysis software SPSS analyzes the correlation between the shape factor and structural steel quantity under the influence of independent variables,and explores the changing trend between the steel quantity and the shape coefficient,finding the critical point of change,and forms the optimized plan with the minimum steel quantity.Through comparison and analysis with structural design software Midas,the rationality and effectiveness of the results obtained by this structural intelligent optimization method are verified.Finally,with the help of the parameterized platform OCTOPUS optimization plug-in,with structural steel consumption and total building energy consumption as the objective function,the energy consumption model and the structural model are established and multi-objective optimization is performed,and the Pareto frontier solution set is obtained.In order to obtain a construction plan with structural safety,low steel consumption,and energy saving,the range of the two objective function values of the optimal solution set is determined,and several better schemes are provided for the designer to choose and provide guidance for the design.And analyze the correlation between the size variable of each room and the total energy consumption of the building.This paper combines building design,building technology and building structure to achieve the unity of form,energy saving and structure.Finally,a set of optimal residential unit schemes that are unique to the modular architecture is formed,which provides methods and guidance for the application of cross-disciplinary multi-objective optimization in the field of architecture. |
