https://scholars.lib.ntu.edu.tw/handle/123456789/598533
標題: | Strength and Plastic Rotation Capacity of I-Shaped Beams with Grid-Purlin System Subjected to Cyclic Loading | 作者: | Matsui R Koizumi K Lin P.-C Iwanaga M Wu A.-C Takeuchi T Tsai K.-C. KEH-CHYUAN TSAI |
關鍵字: | Beam;Cyclic loading test;Plastic rotation capacity;Purlin;Stability bracing of beams;Cyclic loads;Steel beams and girders;Welding;Lateral bracing;Moment frames;Plastic rotation;Rectangular hollow sections;Structural characteristics;Ultimate strength;Rotation | 公開日期: | 2021 | 卷: | 147 | 期: | 7 | 來源出版物: | Journal of Structural Engineering (United States) | 摘要: | 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. ? 2021 This work is made available under the terms of the Creative Commons Attribution 4.0 International license,. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105787049&doi=10.1061%2f%28ASCE%29ST.1943-541X.0003017&partnerID=40&md5=8589cae331dc42d446d3850e3d8f9a82 https://scholars.lib.ntu.edu.tw/handle/123456789/598533 |
ISSN: | 07339445 | DOI: | 10.1061/(ASCE)ST.1943-541X.0003017 |
顯示於: | 土木工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。