| Title |
Seismic Performance Evaluation of the Ceiling Bracket-type Modular Systemwith Various Bracket Lengths and Bolt Types |
| Authors |
Kwak, Eui-Shin ; Kang, Chang-Hoon ; Shon, Su-Deok ; Lee, Seung-Jae |
| DOI |
https://doi.org/10.5659/JAIK_SC.2018.34.4.25 |
| Keywords |
Modular system ; Ceiling bracket ; Cyclic loading test ; Seismic performance ; Special moment frame |
| Abstract |
In regard to modular systems, new methods, as well as middle and high-story unit design ideas, are currently being studied. These studies need to focus on the enhanced stiffness and seismic performance of these connections, and see that the development of fully restrained moment connections can improve the seismic performance. For this reason, this study evaluates the performance of the connections of the ceiling bracket-typed modular system through repeated loading tests and analyses. In order to compare them with these modular units, new unit specimens with the bracket connection being different from that of the traditional modular unit specimens were designed, and the results of repeated loading tests were analyzed. In the traditional units, the structural performances of both welding connection and bolt connection were evaluated. In regard to the testing results, the initial stiffness of the hysteresis curve was compared with the theoretical initial stiffness, and the features of all specimens were also analyzed with regard to the maximum moment. In addition, the test results were examined with regard to the connection flexural strength of the steel special moment frame specified under the construction criteria KBC2016. The connections, which were proposed in the test results, were found to be fully restrained moment connections for designing strong column-weak beams and meeting the requirements of seismic performance of special moment frames. |