Parametric Design And Mechanical Performance Analysis Of Multi Ribbed EPSC Wall Based On BIM

Since the 21st century,the global environmental crisis has increasingly threatened modern human life,and green building and building energy efficiency are one of the effective ways to solve current problems.Cement polystyrene molded shell(EPSC for short)lattice integrated walls are widely used due to their characteristics of being green,soundproof,thermal-insulated,and assembled construction.However,due to its limited seismic performance,it is mainly used in low-rise residential buildings.In the context of mid-rise and high-rise buildings becoming the mainstream development trend in China,improving their seismic performance and having a higher safety reserve capacity is a significant challenge.To this end,thesis explores the replacement of half of the lattice columns and beams of EPSC lattice walls with wall panels to form a dense ribbed EPSC wall.It also analyzes the dense-ribbed EPSC wall model design,architectural design to mechanical verification in an integrated manner,with the following main research elements:(1)Through in-depth analysis of the structural form of dense-ribbed EPSC wall,a split parametric design method for dense-ribbed EPSC wall is proposed,based on the Revit family approach to parametric design of cement polystyrene membrane shell,lattice column,wall slab,spiral hoop and longitudinal reinforcement,and the creation of parametric dense-ribbed EPSC wall elements is completed through the nesting method.The parametric members of beams,slabs and columns were also created to establish a standardized family library,thus getting rid of the limitations of traditional two-dimensional design.(2)Based on Revit API technology,C# language is used to independently develop a platform for viewing and linkage modification of the information of the components of the dense-ribbed EPSC wall building model,realising one-click viewing of the structural parameters,material statistics,design drawings and construction pictures of any component in the building model,as well as the modification of structural parameters to achieve material statistics and linkage modification of design drawings,and verifying its stability through engineering examples.Its stability is verified by engineering examples.(3)Revit parameterizes the creation of regular and multi ribbed EPSC wall models with consistent dimensions,and imports them into ABAQUS to set the same parameters and boundary conditions.Through finite element numerical simulation,the seismic performance indicators such as hysteresis curve,skeleton curve,displacement ductility coefficient,stiffness degradation,and equivalent viscous damping ratio of multi ribbed EPSC lattice wall and regular EPSC lattice wall under different lattice spacing are compared and analyzed.(4)Utilize finite element numerical simulation to analyze the influence of reinforcement ratio of multi ribbed EPSC walls with wall panels and the arrangement of spiral stirrups on the seismic performance of the walls.Obtaining the optimal design scheme for enhancing seismic performance of multi ribbed EPSC walls provides theoretical support and technical guidance for the subsequent seismic performance of EPSC lattice walls.