重复荷载作用下开孔波形板连接件滞回性能的试验研究

开孔波形板连接件是一种新型剪力连接件,通过对6个开孔波形板连接件试件在重复荷载作用下的滞回性能试验,研究了开孔波形板波高、孔径、贯通钢筋直径对波形板连接件滞回性能的影响。结果表明,开孔波形板连接件较传统连接件而言,滞回曲线饱满,耗能能力强。随着波高的增大,滞回环更加饱满,耗能能力更强,且曲线下降平缓,延性得到提高;当孔径增大时,试件的延性和耗能能力同样得到一定的提高;随着贯通钢筋直径增大,试件初始弹性刚度增大,滞回环更为饱满,且具有明显的平缓下降段,延性和耗能能力增强。

Experiment study on hysteretic behavior of corrugated perforated plate connectors under repeated load

The corrugated perforated plate was a new type of shear connector. Six specimens of corrugated perforated plate connectors were experimentally studied on the hysteretic behavior under repeated load. The height of wave and the diameter of hole and reinforcement were considered as the experimental parameters of their seismic behavior. The results show that when compared with the traditional connections, its load-displacement hysteretic loops are in plump-shape, and it has stronger energy dissipation. With the increase of the height of wave, the shape of hysteresis loop gets fuller; the energy dissipation capacity gets stronger. And the curve decreases gently, the ductility of the specimen is improved. As the diameter of hole is increased, the ductility and the energy dissipation capacity are also improved to a certain extent. When the diameter of reinforcement is increased, the initial elastic stiffness of the specimen increases obviously. The plumpness of its hysteresis loop gets better, and it has the obvious gentle descending branch. The ductility and the energy dissipation capacity is enhanced.