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A recoverable precast shear wall composed of precast RC wall and steel energy-dissipator (RPSW-SE) was proposed and tested under reversed cyclic load. The failure process, shear capacity, hysteretic behavior and degradation characteristics were compared with that for cast-in-place concrete shear wall. Moreover, the damaged specimens were repaired by replacing damage steel member and tested again to investigate the seismic performance including hysteretic behavior, shear resistance as well as energy dissipation capacity, and to discuss the recoverable of RPSW-SE. The results showed that the RPSW-SE had good integrity and shear resistance, and the hysteretic curves were relatively full. The steel-energy connection area yielded prior to RC wall and dissipated a large amount of energy, enhancing the deformation capacity and energy dissipation capacity. The stress distribution and damage evolution of the shear wall was improved, and the failure of the RPSW-SE was caused by the fracture of the short steel-column at the slits of the shear-plate, without obvious plastic damage in the concrete wall. It was analyzed that more than 90% of the energy-dissipation in the shear wall was concentrated in the steel-energy connection area, achieving the controllable damage and energy dissipation. The performance indexes of the repaired RPSW-SE were close to those of original ones, indicating that the RPSW-SE had good recoverability.
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| 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 |
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