To achieve rapid recovery of structural function after the earthquake,based on the idea of replaceability and additional energy consumption,a new earthquake-resilient fully bolted beam-column joint is introduced in this study. The shortcoming of insufficient energy dissipation ability of the existing fully bolted joint loaded into large deformation condition is improved by setting up the T-shaped energy dissipator. The influence of the energy consumption length and slenderness ratio of the T-shaped energy dissipator on the seismic behavior of the new earthquake-resilient fully bolted joint is studied. Three new earthquake-resilient fully bolted joints and one welded joint were subjected to low-cycle loading. The results of tests show that the seismic performance of the new earthquake-resilient fully-bolted joint is better than that of the traditional welded joint. The new earthquake-resilient fully-bolted joint can concentrate the plasticity and damage,transfer the plastic zone to the T-type energy dissipation plate,and avoid the fracture of the welding zone at the beam end. In this paper,the lower limit of the length of the energy dissipation segment is given. When the energy dissipation segment has sufficient deformation length,and the cross-section area of the energy dissipation section is the same,the conservative slenderness ratio is determined to be 13.2,which can make the new joints have good bearing capacity and ductility,and give full play to the seismic performance of the new joint.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |