纤维增强混凝土异形柱框架抗震性能的试验研究

Experimental study on seismic behavior of RC frames with specially shaped columns reinforced by fiber

通过薄弱部位应用纤维增强的混凝土异形柱框架和同条件下无纤维异形柱框架的拟静力试验研究,对比了两榀框架的破坏特征、出铰顺序、承载能力和延性、滞回特性、耗能能力及刚度退化等抗震性能指标。研究表明:应用纤维增强的异形柱框架承载能力和整体刚度显著提高,薄弱部位破坏程度减轻,耗能能力有所增强,纤维可以改善异形柱框架薄弱部位的抗震性能,提高异形柱框架结构的整体抗震能力。

Based on the experimental study on a frame with specially shaped columns reinforced by fiber in weak position and a frame with specially shaped columns not reinforced, the authors compared failure characteristic and failure mechanism, bearing capacity and ductility, hysteresis property, energy dissipation and rigidity degeneracy of the two specimens. It is shown that the bearing capacity and integral rigidity of the frame reinforced by fiber in- crease significantly, the damage to the weak position diminishes and the energy dissipation enhances. It is proved that the frame with specially shaped columns can be reinforced by fiber.