Torsional behavior of a non‐eccentric structure considering the effect of shear deformations in vertical members
Abstract Torsional moments can occur in a column owing to the geometric nonlinearity when the top of the column undergoes a large displacement in two horizontal directions. Periodically generated torsional moments can excite the torsional mode of a building owing to the internal resonance. For high‐...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-10-01
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| Series: | Japan Architectural Review |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/2475-8876.12290 |
| _version_ | 1811205316670390272 |
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| author | Shiori Maki Masayuki Kohiyama |
| author_facet | Shiori Maki Masayuki Kohiyama |
| author_sort | Shiori Maki |
| collection | DOAJ |
| description | Abstract Torsional moments can occur in a column owing to the geometric nonlinearity when the top of the column undergoes a large displacement in two horizontal directions. Periodically generated torsional moments can excite the torsional mode of a building owing to the internal resonance. For high‐rise buildings, there is a risk that long‐period seismic motions can cause a non‐negligible torsional response due to this phenomenon. To investigate this risk, this study focuses on non‐eccentric single‐story and two‐story shear‐type structural models with an aggregate column, which is assumed to be an elastic Timoshenko beam. We derived the equations of motion for the models under horizontal ground motions and confirmed that the equations were identical to those of the models with an aggregate column of an elastic Euler beam. We then performed time‐history response analyses of the models satisfying the internal resonance conditions under the input ground motions of harmonic waves, Gaussian white noise acceleration, acceleration records of previous earthquakes, and a long‐period design wave. The results showed that the maximum horizontal acceleration at the corner of the top floor slab could be increased by more than 60% of the acceleration at the center of the slab in the worst case. |
| first_indexed | 2024-04-12T03:29:56Z |
| format | Article |
| id | doaj.art-df0db04a54ee43b9b7025b8ee7ac4ef0 |
| institution | Directory Open Access Journal |
| issn | 2475-8876 |
| language | English |
| last_indexed | 2024-04-12T03:29:56Z |
| publishDate | 2022-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | Japan Architectural Review |
| spelling | doaj.art-df0db04a54ee43b9b7025b8ee7ac4ef02022-12-22T03:49:35ZengWileyJapan Architectural Review2475-88762022-10-015440443110.1002/2475-8876.12290Torsional behavior of a non‐eccentric structure considering the effect of shear deformations in vertical membersShiori Maki0Masayuki Kohiyama1Graduate School of Science and Technology Keio University Yokohama JapanFaculty of Science and Technology Keio University Yokohama JapanAbstract Torsional moments can occur in a column owing to the geometric nonlinearity when the top of the column undergoes a large displacement in two horizontal directions. Periodically generated torsional moments can excite the torsional mode of a building owing to the internal resonance. For high‐rise buildings, there is a risk that long‐period seismic motions can cause a non‐negligible torsional response due to this phenomenon. To investigate this risk, this study focuses on non‐eccentric single‐story and two‐story shear‐type structural models with an aggregate column, which is assumed to be an elastic Timoshenko beam. We derived the equations of motion for the models under horizontal ground motions and confirmed that the equations were identical to those of the models with an aggregate column of an elastic Euler beam. We then performed time‐history response analyses of the models satisfying the internal resonance conditions under the input ground motions of harmonic waves, Gaussian white noise acceleration, acceleration records of previous earthquakes, and a long‐period design wave. The results showed that the maximum horizontal acceleration at the corner of the top floor slab could be increased by more than 60% of the acceleration at the center of the slab in the worst case.https://doi.org/10.1002/2475-8876.12290geometric nonlinearityhigh‐rise buildingshear‐type structureTimoshenko beamtorsional response |
| spellingShingle | Shiori Maki Masayuki Kohiyama Torsional behavior of a non‐eccentric structure considering the effect of shear deformations in vertical members Japan Architectural Review geometric nonlinearity high‐rise building shear‐type structure Timoshenko beam torsional response |
| title | Torsional behavior of a non‐eccentric structure considering the effect of shear deformations in vertical members |
| title_full | Torsional behavior of a non‐eccentric structure considering the effect of shear deformations in vertical members |
| title_fullStr | Torsional behavior of a non‐eccentric structure considering the effect of shear deformations in vertical members |
| title_full_unstemmed | Torsional behavior of a non‐eccentric structure considering the effect of shear deformations in vertical members |
| title_short | Torsional behavior of a non‐eccentric structure considering the effect of shear deformations in vertical members |
| title_sort | torsional behavior of a non eccentric structure considering the effect of shear deformations in vertical members |
| topic | geometric nonlinearity high‐rise building shear‐type structure Timoshenko beam torsional response |
| url | https://doi.org/10.1002/2475-8876.12290 |
| work_keys_str_mv | AT shiorimaki torsionalbehaviorofanoneccentricstructureconsideringtheeffectofsheardeformationsinverticalmembers AT masayukikohiyama torsionalbehaviorofanoneccentricstructureconsideringtheeffectofsheardeformationsinverticalmembers |