Seismic Performance Of Steel Frame Supporting Sandwich Frame Analysis

With the development of society and economy, people are using the function and appearance of the building have become increasingly demanding, single-function buildings are gradually reduced, replaced by the rapid development of an integrated architecture. In recent tensions building land market and the rapid development of the construction market in the formation of a fierce conflict, which also features the other hand to promote the transition from a single building to integration.Sandwich steel frame supporting frame structure is made of adding layer of the sleeve structure evolved through continuous improvement to meet the functional requirements of local building large space is to use a variety of architectural features can be set in one of the structure, more suitable for general construction requirements, conforms to the development trend of China’s architectural forms, with a wide range of applications.Because of China’s vast territory, the special geological conditions, earthquakes only occur at high frequencies, but there are many numbers are extremely destructive and destructive earthquakes. According to the State Seismological Bureau of Statistics, China’s mainland over8earthquake accounted for about10%of the world, more than seven continental earthquakes accounted for about30%of the world.8.0Wenchuan earthquake in2008resulted in the death of nearly10million people, affected more than million.7.1earthquake occurred in Yushu in Qinghai Province in2010caused2,698deaths, nearly thirty thousand people were affected. Such a grim situation led to an audit must be carried out strictly on its seismic performance of a building before any form of application.Sandwich steel frame supporting frame structure as a new structure, to study the seismic performance there are still many gaps. Engineering staff in practice can refer to analyze the data are limited, limiting the development of this application structure. Another point is that this structure has not yet experienced the earthquake test, there is no first-hand information on the post-earthquake design verification, but also limits the improvement of the structure of the upgrade.This paper compares the advantages and disadvantages of existing seismic calculation methods, the decision support analysis of steel frame sandwich frame structure in a multi-case earthquake, seismic fortification, rare case of force and deformation under the effect of the first use of more sophisticated seismic response spectrum method, make a preliminary evaluation of the seismic performance. To improve the energy dissipation capacity of the structure in the rare case of earthquakes under the structure to add the appropriate number of buckling restrained braces. Then pushover analysis using buckling restrained braces for added structural seismic performance tested. By capacity spectrum needs of different spectral curve and the curve for comparison, the overall seismic performance evaluation; then by comparing different specimens of the order they appear in the plastic hinge frame, inspection buckling restrained braces meets the initial set of fuses and consumption requirements can be members; followed by the shear layer, layer displacement, story drift angle curve identify weak layer structure. To improve the accuracy of nonlinear static analysis, using two load loading mode, and the results obtained were compared.