STATISTICAL SURVEY ON STRUCTURAL CHARACTERISTICS OF EXISTING HIGH-RISE CFT BUILDINGS

Abstract

Concrete-filled steel tubular (CFT) columns have become popular as structural members in high-rise buildings. Data on the structural characteristics of 159 high-rise CFT buildings designed from 1968 to 2013 was collected. The structural planning and seismic design value of existing high-rise CFT buildings was analyzed as a function of their design generation. The following observations were made. The strength of concrete used in structures increased over time. As a result, the number of stories and story height increased. In recent years, seismic isolation structures and seismic structures with energy dissipation devices have largely increased in number.