Due to the sharp change of the lateral load moment diagram in deep beams, the commonly proposed rigid connections may be incapable of proper transferring the plastic region away from the connection face into the beam. That is why prequalified connections of steel moment frames, proposed by different design codes, impose geometrical limitations on the beam span-to-depth ratio, which limits the application of the prequalified connections for short deep beams. The aim of this paper is to suggest details on leading the plastic area away from the column face by making a rectangular web opening at the mid-span of the deep beam. In order to stabilize the weakened area, stiffeners are used around the opening. 52 finite element models of deep beams with different geometries of the web openings are investigated. The results show that the use of deep beams with web opening located at mid-span in a steel moment frame is an efficient method to relocate the plastic hinge away from the connections, resulting in increased ductility. A parametric study is carried out on the effect of stiffeners dimensions, web thickness, and corner radius of web opening on behavior of deep beams in moment frames. A step-by-step design algorithm is also propounded for detailing of the web opening and the stiffener size.

由于深梁中侧向荷载力矩图的急剧变化，通常提出的刚性连接可能无法正确地将塑料区域从连接面转移到梁中。这就是为什么由不同的设计规范提出的钢制弯矩框架的预认证连接会对梁的跨度与深度之比施加几何限制，从而限制了对短深梁的预认证连接的应用。本文的目的是通过在深梁的中跨开一个矩形腹板开口来建议将塑料区域引出柱面的细节。为了稳定薄弱区域，在开口周围使用了加强筋。研究了具有不同几何形状腹板开口的深梁的52个有限元模型。结果表明，在钢框架框架中跨度处使用腹板开口的深梁是一种将塑料铰链从连接处移开的有效方法，从而提高了延展性。对加劲肋尺寸，腹板厚度和腹板开口角半径对弯矩框架中深梁性能的影响进行了参数研究。还提出了逐步设计算法，以详细说明腹板开口和加强筋尺寸。