DESIGN AND RESEARCH FOR A TALL BUILDING OF CONCRETE FILLED SQUARE STEEL TUBE

摘要

The concrete filled square steel tube structures (CFST) become more and more popular nowadays. In this paper the design and research for a tall building of this kind was introduced. On the basis of calculating and adjusting of mass and stiffness for many times, braced-frame system was adopted to reduce the torsion effect brought by architectural irregularities of plan and elevation. The modal analysis, response spectrum analysis and time history analysis was carried out by several software. The period, displacement and story shearing force etc. were obtained and compared with each other. Relative design methods and research conclusions could be referenced to similar projects.