高层建筑中,采用开孔梁可以有效降低建筑层高,节约建筑空间。但孔洞破坏了混凝土梁的原有受剪机理,尤其是框架梁端部开孔使梁端塑性铰区域受力变得复杂。通过对5根端部开孔的钢筋混凝土框架梁试件进行反复荷载作用下的试验,研究了在低周反复荷载作用下端部开孔梁的受力性能,分析了不同开孔尺寸和补强方式的开孔梁的破坏特征及抗震滞回性能,从而得出有效的补强配筋形式。 In high-rise buildings, the use of perforated beams can effectively reduce the building height, saving construction space. However, the hole undermines the original shear mechanism of the concrete beam. In particular, the opening at the end of the frame beam complicates the stress on the plastic hinge region at the beam end. Through the tests under repeated loadings of five open-ended RC frame beams, the behavior of open-ended beams under low cyclic loading was studied. The influences of different sizes of openings and reinforcements Way of the failure characteristics of open-hole beams and seismic hysteresis, so as to obtain an effective form of reinforced reinforcement.