Abstract
When large displacements occur in buildings with different stiffnesses in the two horizontal directions, torsional moments are generated owing to geometric nonlinearities. Consequently, when the sum or difference of the translational mode natural frequencies in the two horizontal directions is close to the torsional mode natural frequency, the torsional mode is excited. This is known as Q-? resonance. Therefore, we created a three-dimensional frame model of a center-core high-rise building with a biaxially symmetrical plane that satisfied the Q-? resonance condition and examined whether the torsional response was excited by long-period design waves. A time-history response analysis was conducted assuming elastic response and considering geometric nonlinearities. It was confirmed that the torsional mode could be induced.
| Original language | English |
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| Journal | COMPDYN Proceedings |
| DOIs | |
| Publication status | Published - 2023 |
| Event | 9th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2023 - Athens, Greece Duration: 2023 Jun 12 → 2023 Jun 14 |
Keywords
- Geometric Nonlinearity
- High-Rise Building
- Long-Period Ground Motion
- Q-? Resonance
- Torsional Response
ASJC Scopus subject areas
- Computers in Earth Sciences
- Geotechnical Engineering and Engineering Geology
- Computational Mathematics
- Civil and Structural Engineering