关键词: 高层建筑, 复杂结构, 模拟地震, 振动台试验, 转换层结构

Abstract:

The partial frame-supported shear wall with transfer storey is applied to a 49-storey apartment building.As the difference in angle between the main axis of the upper storeys and that of the podium is 45°, a girder trans-fer structure is adopted , which results in the exceeding of several structural indexes from the limitation of current design codes. In order to investigate the aseismic performance of this complex high-risebuilding , a model with a
scale of 1: 20 is fabricated and tested on the large-scale shaking-table with 3 dimensions and 6 degrees of freedom in the Chinese Academy of Building Research. Based on the test , the self-shaking properties , damping ratios , seismic responses , damage features and mechanism of the model prototype are researched , and the seismic response of the prototype structure is analyzed , indicating that the structure exhibits satisfactory aseismic performance under the ac-tion of the 7 - and 8-occurred earthquakes. Moreover , the feeble parts in the structure are presented. Several suggestions are finally offered to improve the aseismic performance of the building.

Key words: high-rise building, complex structure, simulated earthquake, shaking-table test, transfer-storey structure