Development and prospect of hybrid high-rise building structures in China

Hybrid high-rise building structure has both the advantages of steel structure and concrete structure. Steel and concrete hybrid structures are widely used in China in recent years. However, different views exist related to the seismic behavior of hybrid structures and key design methodologies. This paper attempts to summarize various hybrid structure systems along with introduction of typical engineering examples. Key technical issues are discussed, including seismic behavior, ductility design, member design, the reliability of connections, difference in vertical deformation, construction analysis, nonlinear time-history analysis and damping ratio. Future research needs are also suggested.