The receiver tower is an important structure in the solar thermal power plant,which adopts com-monly a hybrid structure with about 40 m height upper steel structure and about 200m height lower concrete structure.The total weight of the steel structure is more than 2000t,which makes it a special slender high-rise structure.This hybrid structure has large mass and small stiffness at the top,and the transfer platform,support-ing the upper steel tower,is usually considered as a weak part.The influence of the whipping effect was studied based on finite element analysis and shaking table test,and the amplification coefficient of seismic internal force,which is caused by upper steel tower,was given.The seismic performance of the transfer platform was studied,and the structural layout and detail requirements were proposed,which provides references for specifi-cation compilation and engineering design.
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