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Strength and Plastic Rotation Capacity of I-Shaped Beams with Grid-Purlin System Subjected to Cyclic Loading
| Title: | Strength and Plastic Rotation Capacity of I-Shaped Beams with Grid-Purlin System Subjected to Cyclic Loading |
| Authors: | Matsui, Ryota Browse this author | | Koizumi, Koichi Browse this author | | Lin, Pao-Chun Browse this author | | Iwanaga, Masanobu Browse this author | | Wu, An-Chien Browse this author | | Takeuchi, Toru Browse this author | | Tsai, Keh-Chuyan Browse this author |
| Keywords: | Beam | | Purlin | | Stability bracing of beams | | Plastic rotation capacity | | Cyclic loading test |
| Issue Date: | Jul-2021 |
| Publisher: | American Society of Civil Engineers (ASCE) |
| Journal Title: | Journal of structural engineering |
| Volume: | 147 |
| Issue: | 7 |
| Start Page: | 04021103 |
| Publisher DOI: | 10.1061/(ASCE)ST.1943-541X.0003017 |
| Abstract: | This paper introduces a grid-purlin system, which was composed of secondary rectangular-hollow-section grids welded onto the top flange of I-shaped beams of moment frames. The welded grid-purlin itself may play a role of a lateral bracing member for the welded beam. However, the ultimate strength, plastic rotation capacity, or other structural characteristics of this grid-purlin system remain poorly understood. This paper presents two full-scale cyclic loading tests on specimens with I-shaped beams 700 mm deep, 240 mm wide, and 13 m long. The diagonal length of grids in the square grid-purlin of the specimen was 1.3 m on-center, and two different depths of the sections were selected for the purlin sections. Both specimens successfully achieved fully plastic moments at a plastic rotation exceeding 0.04 rad. This shows that the grid-purlin system provides reliable lateral bracing. Continuum finite-element (CFE) analysis was performed to simulate the hysteretic experimental response of the grid-purlin system. This CFE model was used to examine the plastic rotation capacity for a variety of combinations of I-shaped beams and grid-purlins. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/81960 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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