Performance-based Seismic Design Principles and Objectives of Shanghai Tower

Since both of the height and irregularity of Shanghai Tower are far beyond the current Chinese code specification, non-prescriptive performance-based seismic design (PBSD) approach is required to be employed in the seismic design of this super tall building. PBSD principles and objectives of this building are presented here. The seismic performance objectives selected for Shanghai Tower are as follows: fully operational under frequent earthquakes, operational under basic earthquakes, and life safety under rare earthquakes. The design criteria for structural components and systems consistent with the above performance objectives are established. The individual requirements of loading- carrying capacity and deformation demands on different types of structural components under different earthquake level are put forward in order to accomplish predefined performance objectives. The requirements on seismic performance analysis and evaluation are presented at last.