| Title |
Development of Moment Resisting Joints Using Threaded Steel Shaft and Drift Pin |
| Authors |
Baek Hei-Soo ; Iimura Yutaka |
| Keywords |
Green Building ; Timber Frame Structure ; Glulam with a Low Specific Gravity ; Pre-stressed Joint |
| Abstract |
Recently, there is a movement to look at the possibilities of making "green" wooden structures viable in Korea. The purpose of this study is to determine the feasibility of using mechanical fasteners to design a pre-cut timber structure using fast growing "Sugi" mass produced glulam and moment resisting joints designed via a CAD/CAM system. We proposed a structure design based on using pre-stressed joints that consist of a threaded steel shaft and drift pin. We conducted cyclic loading tests on two types of joints, T -beam-column joint- and I -column base joint- to investigate the mechanical characteristics properties of these two joint forms. Our tests yielded conclusive evidence that incipient slip and statistical dispersion is improved by press-in dowel and pre-stress torque. By modeling the spring elements relating to the moment transfer; we derived a calculation formula in the rotation rigidity and the yield moment of the joint. When compared with the averages of experimental results, the numerical results obtained by the calculation formula ranged from 74 percent to 108 percent. |