Complex staggered floor structure design and analysis of Wangfujing Foreign Language Bookstore
The Wangfujing Foreign Language Bookstore project is a seismic complex out-of-code high-rise project,with double large-span structure.There are two-way staggered floors,and shared space with an outer diameter of 19.5 meters and a height of 27 meters is set in the middle.The research and analysis results of a typical single staggered steel structure show that the cross type staggered columns will not enter the shear yield under the action of earthquakes,and the staggered double beams and the staggered series bracing can effectively improve the lateral load-bearing capacity of the structure and reduce the degree of plastic damage to the structure under the action of large earthquakes.The steel frame-bracing system is adopted for this structure.In the design,several issues such as the analysis method for staggered floor structure design,the statistics of inter-story displacement angle and torsional displacement ratio,the calculation of storey stiffness ratio and shear bearing capacity ratio,and the determination of eccentric layout were discussed.A design concept is proposed to reduce the adverse effects by adjusting the layout of lateral-resistant members and optimizing the horizontal force transmission path.Through multi-program and multi-model calculation and analysis,performance-based seismic design,and special research on special parts,the architectural effect,structural safety,and rationality are well achieved.
two-way staggered floorrotating walkwaystaggered series bracingperformance-base seismic design
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