A tower is a frame-shear wall structure of a single tower with large chassis.There are many irregularities,such as torsion irreg-ularity,floor discontinuity,bearing capacity mutation,tower offset,etc.,which belongs to a regular over-limit project.In view of the ir-regularity of the structure,the performance-based seismic design method is used to analyze the main structure and key parts in detail,and a series of structural measures are adopted to ensure that the overall index and seismic performance of the structure meet the requirements of the code and the seismic performance target.
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