Calculation Method for Lateral Deformation Angle of High-Rise Hexagonal Grid Tube Structures
The study aims to investigate the influence of the dependable deformation angle on the seismic design of high-rise hexagonal grid tube structures.A new simplified calculation method is proposed in the paper for lateral deformation angle of high-rise hexagonal grid tube structures based on the mechanical model of the main load-bearing components.Considering the impacts of structural bending deformation and shear deformation,a simplified formula for calculating the shear and bending stiffness of typical hexagonal cell elements is presented,and then the relationship between the deformation angle of the hexagonal grid tube structural cell module and the axial strain of the inclined column at the corner of the web is established.The finite element model of 48-floor hexagonal grid tube structures with different inclined angles of the columns is established,with which the static elastic analysis under different load types is made.The results show that,for the inclined column angles of 33.69°,53.13°,63.43° and 69.44°,the errors between the results obtained by the proposed simplified calculation method and the ones obtained by the finite element model analysis are 6％,3％,0.08％and 13％,respectively and that,for lateral uniform load,inverted triangular load,and apex concentrated load,the errors are 4％,2％,and 6％,respectively.These results indicate that the calculation method proposed in this paper is workable,which is expected to provide reference for the seismic design of hexagonal grid tube structures in high-rise buildings.
hexagonal grid tubedeformation angleaxial straininclined angles of the columns
万方数据
维普
