The Influence of the Flexural Strength Ratio of Columns to Beams on the Collapse Capacity of RC Frame Structures
Reinforced concrete (RC) frames are designed based on the strong column-weak beam (SCWB) philosophy to reduce structural damage and collapse during earthquakes. The SCWB design philosophy is ensured by the required minimum flexural strength ratio of columns to beams (FSRCB) in the seismic code. Quan...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/12/8/1219 |
| _version_ | 1827600581611487232 |
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| author | Maosheng Gong Bo Liu Zhanxuan Zuo Jing Sun Hao Zhang |
| author_facet | Maosheng Gong Bo Liu Zhanxuan Zuo Jing Sun Hao Zhang |
| author_sort | Maosheng Gong |
| collection | DOAJ |
| description | Reinforced concrete (RC) frames are designed based on the strong column-weak beam (SCWB) philosophy to reduce structural damage and collapse during earthquakes. The SCWB design philosophy is ensured by the required minimum flexural strength ratio of columns to beams (FSRCB) in the seismic code. Quantifying the relationship between the FSRCB and the collapse capacity of the frames may facilitate the efficient assessment of the seismic performance of the existing or newly designed RC frames. This paper investigates the influence of different FSRCBs on the collapse capacity of three- and nine-story RC frames designed according to Chinese seismic codes. The results show that the collapse capacities of the RC frames can be efficiently improved by increasing the FSRCB, and the collapse capacities of frames with FSRCB = 2.0 are improved by approximately 1.6–2.0 times compared with those of the frames with FSRCB = 1.2. Compared with the middle- or high-rise (nine-story) frames, it is more efficient to improve the collapse capacity for low-rise (three-story) frames by increasing the value of CBFSR. The logarithmic standard deviation of the collapse capacity of the RC frames designed according to the Chinese seismic codes ranges from 0.5–0.9, which is larger than the proposed maximum logarithmic standard deviation (0.4) in FEMA P695. |
| first_indexed | 2024-03-09T04:39:12Z |
| format | Article |
| id | doaj.art-98172236eb0147bca4b24852f4b7e9a7 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-09T04:39:12Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-98172236eb0147bca4b24852f4b7e9a72023-12-03T13:24:08ZengMDPI AGBuildings2075-53092022-08-01128121910.3390/buildings12081219The Influence of the Flexural Strength Ratio of Columns to Beams on the Collapse Capacity of RC Frame StructuresMaosheng Gong0Bo Liu1Zhanxuan Zuo2Jing Sun3Hao Zhang4Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, ChinaSchool of Civil Engineering, Yantai University, Yantai 264005, ChinaKey Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, ChinaSchool of Civil Engineering, Heilongjiang University, Harbin 150080, ChinaKey Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, ChinaReinforced concrete (RC) frames are designed based on the strong column-weak beam (SCWB) philosophy to reduce structural damage and collapse during earthquakes. The SCWB design philosophy is ensured by the required minimum flexural strength ratio of columns to beams (FSRCB) in the seismic code. Quantifying the relationship between the FSRCB and the collapse capacity of the frames may facilitate the efficient assessment of the seismic performance of the existing or newly designed RC frames. This paper investigates the influence of different FSRCBs on the collapse capacity of three- and nine-story RC frames designed according to Chinese seismic codes. The results show that the collapse capacities of the RC frames can be efficiently improved by increasing the FSRCB, and the collapse capacities of frames with FSRCB = 2.0 are improved by approximately 1.6–2.0 times compared with those of the frames with FSRCB = 1.2. Compared with the middle- or high-rise (nine-story) frames, it is more efficient to improve the collapse capacity for low-rise (three-story) frames by increasing the value of CBFSR. The logarithmic standard deviation of the collapse capacity of the RC frames designed according to the Chinese seismic codes ranges from 0.5–0.9, which is larger than the proposed maximum logarithmic standard deviation (0.4) in FEMA P695.https://www.mdpi.com/2075-5309/12/8/1219RC framecollapse capacitystrong column-weak beamflexural strength ratio of columns to beams |
| spellingShingle | Maosheng Gong Bo Liu Zhanxuan Zuo Jing Sun Hao Zhang The Influence of the Flexural Strength Ratio of Columns to Beams on the Collapse Capacity of RC Frame Structures Buildings RC frame collapse capacity strong column-weak beam flexural strength ratio of columns to beams |
| title | The Influence of the Flexural Strength Ratio of Columns to Beams on the Collapse Capacity of RC Frame Structures |
| title_full | The Influence of the Flexural Strength Ratio of Columns to Beams on the Collapse Capacity of RC Frame Structures |
| title_fullStr | The Influence of the Flexural Strength Ratio of Columns to Beams on the Collapse Capacity of RC Frame Structures |
| title_full_unstemmed | The Influence of the Flexural Strength Ratio of Columns to Beams on the Collapse Capacity of RC Frame Structures |
| title_short | The Influence of the Flexural Strength Ratio of Columns to Beams on the Collapse Capacity of RC Frame Structures |
| title_sort | influence of the flexural strength ratio of columns to beams on the collapse capacity of rc frame structures |
| topic | RC frame collapse capacity strong column-weak beam flexural strength ratio of columns to beams |
| url | https://www.mdpi.com/2075-5309/12/8/1219 |
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