In-plane and out-of-plane behaviour of concrete masonry infills

在现代建筑结构中，砌体墙通常用于填充钢或钢筋混凝土框架，作为内部隔墙或外部包层。由于在评估砌体与框架之间相互作用程度方面缺乏科学信息，砌体填充体通常被视为非结构单元，并且边界框架的设计同时适用于重力和侧向荷载。砌体填充物对框架刚度和强度的贡献因此被忽略。然而，忽略填充物的贡献是一种保守的方法，这是一种误解。填充墙显著增强框架的刚度，这反过来又吸引更大的力到结构的填充区域。设计不当的填充墙被认为是造成地震中灾难性结构破坏的一个因素。另一方面，合理设计的填充物已显示出在抵抗各种类型的横向荷载方面为框架系统提供显著的强度和延展性-即使在相当大的裂缝之后。

Masonry walls have been commonly used to infill steel or reinforced concrete frames either as interior partitions or exterior cladding in modern building construction. Due to a lack of scientific information in assessing the extent of interaction between the infill and the frame, the masonry infill is often treated as non-structural element and the bounding frame is designed for both gravity and lateral loading. The contribution of masonry infills to the frame stiffness and strength is therefore ignored. It is, however, a misconception that ignoring the contribution of the infill is a conservative approach. Infill walls significantly stiffen the frame, which in turn attracts larger forces to the infill region in a structure. Improperly designed Infill walls have been identified as a contributing factor to catastrophic structural failures in earthquakes. On the other hand, properly designed infills have shown to provide significant strength and ductility for the frame system in resisting various types of lateral loads-even after considerable cracking.