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| Seismic performance of an asymmetric twin-tower connected structure based on the hybrid energy dissipation technology |
| CAI Zheng1,2， PAN Wen1,2， ZHOU Qiang1,2， GHAFAR Wahab Abdul1,2， YANG Jing1,2 |
| 1．School of Architectural Engineering，Kunming University of Science and Technology，Kunming 650599，China；
2．Earthquake Engineering Researching Center of Yunnan，Kunming 650599，China |
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Abstract An asymmetrical twin-tower connected super high-rise structure was studied here and the seismic wave matching the building's site conditions was chosen as the excitation. The non-linear dynamic time analysis of the structure was used to study the energy dissipation and damping effect of the hybrid energy dissipation and damping connected structure under the action of various intensity earthquakes. The influences of the position change of BRB and cantilever truss with viscous dampers on structural aseismic performances were discussed. Moreover, the energy dissipation and damage assessments of the entire tower were studied and discussed in detail. The results show that the structure has better damping effect when the damper is arranged in the strengthened story in the middle and upper part of the connected structure. Under different seismic levels, BRB and cantilever truss with viscous dampers dissipate energy in stages and have different energy efficiency, the hybrid energy dissipation and damping technology can integrate the advantages of different types of dampers, so that the connected structure has a more comprehensive seismic performance. In terms of deformation control, hybrid energy dissipation and damping technology can reduce the torsional effect and inter-story drift ratio of the connected structure. In terms of member energy dissipation, it reduces the degree of plasticity of the main members and lowers the stress level of the structure's main stress-bearing members. The results provided a reference for further research and application of hybrid energy dissipation and damping technology in connected super high-rise structures.
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Received: 13 April 2023
Published: 28 March 2024
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