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Shake table testing of a multi-tower
connected hybrid structure
Zhou Ying 1, Lu Xilin 1, Lu Wensheng1
and He Zhijun 2
1. State Key Laboratory for Disaster Reduction in Civil Engineering,
Tongji University, Shanghai 200092, China
2. Architectural Design and Research Institute, Tongji University,
Shanghai 200092, China
Abstract: Many single-tower reinforced concrete core wall-steel
frame (RCC-SF) buildings have been built in China, but there are no
buildings of different-height multi-tower hybrid system. A multi-tower
RCC-SF tall building was thus studied because of its structural
complexity and irregularity. First, a 1/15 scaled model structure was
designed and tested on the shake table under minor, moderate, and major
earthquake levels. Then, the dynamic responses of the model structure
were interpreted to those of the prototype structure according to the
similitude theory. Experimental results demonstrate that, despite the
complexity of the structure, the lateral deformation bends as the
ˇ°bending typeˇ± and the RC core walls contribute more than the steel
frames to resist seismic loads. The maximum inter-story drift of the
complex building under minor earthquakes is slightly beyond the elastic
limitation specified in the Chinese code, and meets code requirements
under major earthquakes. From the test results some suggestions are
provided that could contribute favorable effect on the seismic behavior
and the displacement of the building.
Keywords: complex building; hybrid structure; scaled model; shake
table testing; seismic performance
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