Beam Conversion Layer On Seismic Performance Analysis And Research

In order to meet the needs of architectural features, high-rise buildings often need to set the conversion layer, the layer structure with conversion of the vertical component is not continuous along the height direction, leading to uneven distribution of its vertical stiffness. In the earthquake, because the mutation makes the structural stiffness in the conversion layer in the vicinity of the corresponding displacement and internal forces are also generated mutations, detrimental to the earthquake. From the conversion layer structure, due to beam conversion layer compared to other forms of conversion layer structure of the force transmission is relatively direct and clear advantage, it is now widely used in practical engineering.This paper describes the conversion layer structure of the status quo, development trends, and several issues to be resolved, and then discuss the girder transfer story structure and design of the force characteristics of the finite element method and related theory. Finally, application of large-scale general-purpose finite element software SAP2000, the establishment of reinforced concrete shear wall core tube beam conversion layer structure model. First on the structure of modal analysis and vibration response spectrum analysis of the conversion layer to set the height and the equivalent conversion layer on the lower stiffness than the impact of structural seismic performance, set on a high degree of conversion layer influence on the analysis of seismic performance to discuss the conversion layer height of the structure set period, the impact of displacement and internal forces; conversion layer in the lower stiffness than the equivalent impact on the seismic performance analysis, discusses the structure of the selection method than the lateral stiffness and the equivalent stiffness than the reasonable range. Finally, the elastic time-history analysis of structures, under earthquake in more than a linear time-history analysis, setting the height of the conversion layer is not the same in the three selected seismic waves, the structure top floor displacement, axial force underlying pillar box and the transfer beam bending and shear properties of schedule changes, identify the structure and components of the force and displacement characteristics, and through analysis of operating conditions on the linear structure of time-displacement and displacement angle of the discussion compares the response spectrum analysis and schedule analysis features.Conclusion paper describes beam conversion layer structures and components under earthquake load-bearing capacity, deformation characteristics and analysis of the impact of such seismic performance of the main factors. By combining several aspects of this paper, has been beam conversion layer structure and its components in the seismic performance characteristics and force some of the conclusions for the future of engineering analysis and calculations similar to the design reference.