Development of a novel infill frame system using concrete masonry infills bounded by masonry frames

在现代建筑结构中，填充钢或钢筋混凝土(RC)框架的砖墙通常用作分隔空间的隔断或用于建筑物闭合的覆层。另据了解，如果墙紧靠其边界框架建造，填充材料将与框架相互作用，参与荷载分担，从而改变框架体系的结构性能。以前的研究表明，适当设计的填充物为框架系统提供了显著的强度、延性和能量耗散，以抵抗各种类型的横向荷载-即使在相当大的裂缝之后。本研究基于对填充钢/钢筋混凝土框架结构的了解，开发了一种新型的全砌体填充钢/钢筋混凝土框架体系，并与传统的填充钢或钢筋混凝土框架体系进行了对比分析。全砌块填充框架是由一种材料(即砖石)制成的，其中砖石填充由由砖石加固柱和系梁形成的砖石框架包围。框架和填充物的施工可以同时进行，这将简化和简化设计和施工过程，因为不需要像钢或RC框架那样与混凝土或钢铁行业协调。全砌块填充体系的目的是将边界单元(砖柱和梁)和填充结合在一起，在一种材料中形成一个有效的抗侧向荷载体系。这将对砌体填充墙设计和施工的行业实践产生重大影响。本文通过大量的试验和数值研究，研究了不同构造形式和构造细节的全砌体钢框架体系，以及其在面内和面外荷载作用下的结构性能。预计在项目完成后，可以就适用于行业惯例的设计和分析提出建设性的建议。作为长期目标之一，这项研究的试验和分析结果将被用来建立一套统一的方程和设计图，以考虑纳入加拿大现行的全砌体填充框架的砌体设计标准。

Masonry walls infilled steel or reinforced concrete (RC) frames have been commonly used in modern building construction to serve as either partitions for separating spaces or cladding for building closure. It is also understood that if the wall is built tight against its bounding frame, the infill will interact with the frame and participate in the load sharing, thus changing the structural performance of the frame system. Previous studies have shown that properly designed infills provide significant strength, ductility and energy dissipation for the frame system in resisting various types of lateral loads-even after considerable cracking. Built on the knowledge of the masonry infilled steel/RC frames, this research is to develop a novel, all-masonry infilled frame system and evaluate its structural performance in comparison with conventional infilled steel or RC frame systems. An all-masonry infilled frame is made of one material, i.e. masonry, where the masonry infill is bounded by masonry frames formed by masonry reinforced columns and tied beams. Construction of the frame and infill can occur at the same time, which will simplify and streamline both the design and construction processes as the need to coordinate with concrete or steel trades as in the steel or RC frame cases is eliminated. The all-masonry infilled system is intended to combine the boundary elements (masonry columns and beams ) and infills to form an effective lateral load resisting system in one material. This will have a significant impact on the industry practice in design and construction of masonry infill walls. This research is to develop the all-masonry frame system with different configurations and construction details and investigate its structural behaviour under both in-plane and out-of-plane loading through extensive experimental testing and numerical studies. It is expected that upon the completion of the project, constructive recommendations regarding design and analysis applicable to industry practice can be made. As one of the long-term objectives, the experimental and analytical results of the study will be used to establish a set of unified equations and design charts to be considered for inclusion in the current Canadian masonry design standard for all-masonry infilled frames.