Concrete block infill walls, due to their high strength and stiffness, can significantly influence the seismic behavior of the frames. The infill walls can increase the overall lateral frame strength and can also induce local failures in the surrounding frames. In general, if local failure can be avoided, the presence of the infill walls can provide additional reserved strength that can be beneficial to the frames. For this reason, a new RC frame with infill walls could be designed as a bare frame without considering the increase in strength, but measures must be taken to prevent local failures due to the infill wall-frame interaction. However, this infill wall-frame interaction is very complex, and clear design strategies to prevent local failures are not normally given in design codes. For this reason, two full-scale intermediate RC moment-resisting frame specimens with infill concrete block walls were tested under a horizontal cyclic load to study the infill wall-frame interaction. Finite element analysis was carried out to evaluate the response particularly on the infill-frame interactions. Based on the results, a design strategy to eliminate local failure in the surrounding frame is suggested. The proposed method is based on local plastic mechanism analysis of the column considering the variation in the column shear demand and column shear capacity at different states of the response as the frame deforms. The shear demand depends on the magnitude and direction of the bearing force from the infill wall. The column is considered as a captive or slender column depending on the restraint from the infill wall, thereby affecting the shear capacity of the column. The proposed approach can be readily applied without radically changing common design practices and design codes.

混凝土砌块填充墙由于其高强度和刚度，可以显着影响框架的抗震性能。填充壁可以增加整体侧框架的强度，还可以引起周围框架的局部破坏。通常，如果可以避免局部破坏，则填充壁的存在可以提供额外的保留强度，这可能对框架有利。因此，可以将新的带有填充墙的RC框架设计为裸露框架，而无需考虑强度的增加，但是必须采取措施以防止由于填充墙-框架相互作用而引起的局部破坏。但是，这种填充墙框架的相互作用非常复杂，并且在设计规范中通常没有明确的设计策略来防止局部故障。为此原因，在水平循环荷载作用下，测试了两个具有填充混凝土砌块墙的全尺寸中间RC框架抗弯框架标本，以研究填充墙与框架的相互作用。进行了有限元分析以评估响应，特别是在填充框架相互作用方面。根据结果​​，提出了消除周围框架局部故障的设计策略。所提出的方法基于立柱的局部塑性机理分析，考虑了随着框架变形，在不同响应状态下立柱剪切需求和立柱剪切能力的变化。剪切需求取决于来自填充壁的轴承力的大小和方向。根据填充墙的约束，该柱被认为是俘获柱或细长柱，从而影响柱子的剪切能力。所提出的方法可以很容易地应用，而无需从根本上改变通用的设计实践和设计规范。