Simplified Design Equation of Minimum Interior Joint Depth for Special Moment Frames with High-Strength Reinforcement
Abstract To avoid excessive slip of beam longitudinal bars at the joints of an earthquake-resisting moment frame, ACI 318 Building Code set a minimum joint depth of 20 times the diameter of the largest longitudinal beam bars passing through the joint, which is based on prior experimental verificatio...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2018-11-01
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| Series: | International Journal of Concrete Structures and Materials |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s40069-018-0303-2 |
| _version_ | 1811305661494984704 |
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| author | Hung-Jen Lee Hsi-Ching Chen Tsung-Chieh Tsai |
| author_facet | Hung-Jen Lee Hsi-Ching Chen Tsung-Chieh Tsai |
| author_sort | Hung-Jen Lee |
| collection | DOAJ |
| description | Abstract To avoid excessive slip of beam longitudinal bars at the joints of an earthquake-resisting moment frame, ACI 318 Building Code set a minimum joint depth of 20 times the diameter of the largest longitudinal beam bars passing through the joint, which is based on prior experimental verification of beam-column joints with Grade 420 MPa reinforcement. In view of that the 20-bar-diameter criterion cannot be simply extended for concrete frame joints with higher grade reinforcement, this paper summarizes international existing design criteria and proposes a simplified equation for the minimum joint depth. The equation applicability is assessed by evaluating the cyclic testing results of beam-column joints conducted in East Asian and Pacific Countries, where Grade 490, 590, and 690 MPa reinforcement have been used for earthquake-resistant concrete structures. Beam-column joints that satisfy the proposed equation can demonstrate satisfactory hysteresis behavior at an interstory drift of 4%. |
| first_indexed | 2024-04-13T08:30:32Z |
| format | Article |
| id | doaj.art-c83fb8efdcde48daba2f8fa02b557bfb |
| institution | Directory Open Access Journal |
| issn | 1976-0485 2234-1315 |
| language | English |
| last_indexed | 2024-04-13T08:30:32Z |
| publishDate | 2018-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | International Journal of Concrete Structures and Materials |
| spelling | doaj.art-c83fb8efdcde48daba2f8fa02b557bfb2022-12-22T02:54:16ZengSpringerOpenInternational Journal of Concrete Structures and Materials1976-04852234-13152018-11-0112111510.1186/s40069-018-0303-2Simplified Design Equation of Minimum Interior Joint Depth for Special Moment Frames with High-Strength ReinforcementHung-Jen Lee0Hsi-Ching Chen1Tsung-Chieh Tsai2Department of Civil and Construction Engineering, National Yunlin University of Science and TechnologyGraduate School of Engineering Science and Technology, National Yunlin University of Science and TechnologyDepartment of Civil and Construction Engineering, National Yunlin University of Science and TechnologyAbstract To avoid excessive slip of beam longitudinal bars at the joints of an earthquake-resisting moment frame, ACI 318 Building Code set a minimum joint depth of 20 times the diameter of the largest longitudinal beam bars passing through the joint, which is based on prior experimental verification of beam-column joints with Grade 420 MPa reinforcement. In view of that the 20-bar-diameter criterion cannot be simply extended for concrete frame joints with higher grade reinforcement, this paper summarizes international existing design criteria and proposes a simplified equation for the minimum joint depth. The equation applicability is assessed by evaluating the cyclic testing results of beam-column joints conducted in East Asian and Pacific Countries, where Grade 490, 590, and 690 MPa reinforcement have been used for earthquake-resistant concrete structures. Beam-column joints that satisfy the proposed equation can demonstrate satisfactory hysteresis behavior at an interstory drift of 4%.http://link.springer.com/article/10.1186/s40069-018-0303-2beam-column jointbondcyclic testinghigh-strength reinforcementslip |
| spellingShingle | Hung-Jen Lee Hsi-Ching Chen Tsung-Chieh Tsai Simplified Design Equation of Minimum Interior Joint Depth for Special Moment Frames with High-Strength Reinforcement International Journal of Concrete Structures and Materials beam-column joint bond cyclic testing high-strength reinforcement slip |
| title | Simplified Design Equation of Minimum Interior Joint Depth for Special Moment Frames with High-Strength Reinforcement |
| title_full | Simplified Design Equation of Minimum Interior Joint Depth for Special Moment Frames with High-Strength Reinforcement |
| title_fullStr | Simplified Design Equation of Minimum Interior Joint Depth for Special Moment Frames with High-Strength Reinforcement |
| title_full_unstemmed | Simplified Design Equation of Minimum Interior Joint Depth for Special Moment Frames with High-Strength Reinforcement |
| title_short | Simplified Design Equation of Minimum Interior Joint Depth for Special Moment Frames with High-Strength Reinforcement |
| title_sort | simplified design equation of minimum interior joint depth for special moment frames with high strength reinforcement |
| topic | beam-column joint bond cyclic testing high-strength reinforcement slip |
| url | http://link.springer.com/article/10.1186/s40069-018-0303-2 |
| work_keys_str_mv | AT hungjenlee simplifieddesignequationofminimuminteriorjointdepthforspecialmomentframeswithhighstrengthreinforcement AT hsichingchen simplifieddesignequationofminimuminteriorjointdepthforspecialmomentframeswithhighstrengthreinforcement AT tsungchiehtsai simplifieddesignequationofminimuminteriorjointdepthforspecialmomentframeswithhighstrengthreinforcement |