Comparative Assessment of Shear Demand for RC Beam-Column Joints under Earthquake Loading
This paper focuses on the evaluation of bi-axial shear demand for reinforced concrete (RC) beam–column joints assuming: (i) the SPEAR frame as a benchmark; and (ii) different structural analysis methods which share the same seismic input. A numerical model was implemented using lumped plasticity. Th...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/14/7153 |
| _version_ | 1797407591736803328 |
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| author | Angelo Marchisella Giovanni Muciaccia |
| author_facet | Angelo Marchisella Giovanni Muciaccia |
| author_sort | Angelo Marchisella |
| collection | DOAJ |
| description | This paper focuses on the evaluation of bi-axial shear demand for reinforced concrete (RC) beam–column joints assuming: (i) the SPEAR frame as a benchmark; and (ii) different structural analysis methods which share the same seismic input. A numerical model was implemented using lumped plasticity. The joints were modeled as rigid offsets of beams and columns. The shear demand at a joint is evaluated as a post-process of the beam’s nodal moment. The discussion focuses on the differences between the estimated shear demand considering modal-response-spectrum analysis (MRSA), non-linear static analysis (NLSA) and non-linear time history (NLTH). Strength assessment of joints is discussed as well. Significant strength differences were recognized by using different building codes targeted to existing structures which, in general, behaved on the safe side. The elliptical shear strength domain resulted in being conservative when compared to NLTH shear demand orbits. NLSA, using modal combination, proved to estimate the larger shear demand with respect to MRSA and NLTH. |
| first_indexed | 2024-03-09T03:43:46Z |
| format | Article |
| id | doaj.art-b9ef2458c6ab44dbb6ffb48c0f186775 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T03:43:46Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-b9ef2458c6ab44dbb6ffb48c0f1867752023-12-03T14:36:38ZengMDPI AGApplied Sciences2076-34172022-07-011214715310.3390/app12147153Comparative Assessment of Shear Demand for RC Beam-Column Joints under Earthquake LoadingAngelo Marchisella0Giovanni Muciaccia1Department of Civil and Environmental Engineering, Politecnico di Milano, 20133 Milano, ItalyDepartment of Civil and Environmental Engineering, Politecnico di Milano, 20133 Milano, ItalyThis paper focuses on the evaluation of bi-axial shear demand for reinforced concrete (RC) beam–column joints assuming: (i) the SPEAR frame as a benchmark; and (ii) different structural analysis methods which share the same seismic input. A numerical model was implemented using lumped plasticity. The joints were modeled as rigid offsets of beams and columns. The shear demand at a joint is evaluated as a post-process of the beam’s nodal moment. The discussion focuses on the differences between the estimated shear demand considering modal-response-spectrum analysis (MRSA), non-linear static analysis (NLSA) and non-linear time history (NLTH). Strength assessment of joints is discussed as well. Significant strength differences were recognized by using different building codes targeted to existing structures which, in general, behaved on the safe side. The elliptical shear strength domain resulted in being conservative when compared to NLTH shear demand orbits. NLSA, using modal combination, proved to estimate the larger shear demand with respect to MRSA and NLTH.https://www.mdpi.com/2076-3417/12/14/7153SPEARRC beam-column jointpushover |
| spellingShingle | Angelo Marchisella Giovanni Muciaccia Comparative Assessment of Shear Demand for RC Beam-Column Joints under Earthquake Loading Applied Sciences SPEAR RC beam-column joint pushover |
| title | Comparative Assessment of Shear Demand for RC Beam-Column Joints under Earthquake Loading |
| title_full | Comparative Assessment of Shear Demand for RC Beam-Column Joints under Earthquake Loading |
| title_fullStr | Comparative Assessment of Shear Demand for RC Beam-Column Joints under Earthquake Loading |
| title_full_unstemmed | Comparative Assessment of Shear Demand for RC Beam-Column Joints under Earthquake Loading |
| title_short | Comparative Assessment of Shear Demand for RC Beam-Column Joints under Earthquake Loading |
| title_sort | comparative assessment of shear demand for rc beam column joints under earthquake loading |
| topic | SPEAR RC beam-column joint pushover |
| url | https://www.mdpi.com/2076-3417/12/14/7153 |
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