A New Round of Updation of Seismic Design Code of China

Abstract eng:
A new round of updation of seismic design code of China named GB50011 has taken since the second half of 2006. The conception of the performance based seismic design has been presented in terms of Three Earthquake Defence Lines and Seismic Objectives. Basic requirements for conception design, design earthquake strong motion parameters and response spectra, methodologies for site classification, requirements on input earthquake acceleration records for time history analysis of structures, the minimum required shear force of base and stories, two phases of seismic design : the elastic analysis for the section design to minor earthquake actions and the elasto-plastic analysis for displacement response of structures to major earthquake actions and corresponding drift limits of structures, etc. are summarized. Lesions learned from damages of the 512 Wenchuan Earthquake, 2008 are introduced. provision for new types of structures, such as steel structure, building with base isolators and energy dissipation devices, spacious structures and underground buildings are also involved in the code.

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