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

使用以砌体框架为界的混凝土砌体填充物开发新型填充框架系统

• 批准号: 508786-2017
• 负责人: Liu, Yi
• 金额: $ 4.16万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=618088
• 关键词: Development; novel; infill; frame; system

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.

砖石墙填充钢或钢筋混凝土（RC）框架已广泛用于现代建筑施工中，作为分隔空间的隔断或用于建筑物封闭的包层。另据了解，如果墙体紧靠其边界框架建造，填充物将与框架相互作用并参与负载分配，从而改变框架系统的结构性能。先前的研究表明，正确设计的填充物可以为框架系统提供显着的强度、延展性和能量耗散，以抵抗各种类型的横向载荷，即使在出现相当大的裂缝后也是如此。基于砖石填充钢/RC 框架的知识，本研究旨在开发一种新颖的全砖石填充框架系统，并与传统的填充钢或 RC 框架系统相比评估其结构性能。全砖石填充框架由一种材料（即砖石）制成，其中砖石填充物以砖石框架为边界，砖石框架由砖石钢筋柱和系梁形成。框架和填充的施工可以同时进行，这将简化和简化设计和施工过程，因为消除了钢或 RC 框架情况下与混凝土或钢材行业协调的需要。全砌体填充系统旨在将边界元件（砌体柱和梁）和填充物结合起来，以一种材料形成有效的横向荷载抵抗系统。这将对砖石填充墙的设计和施工行业实践产生重大影响。本研究旨在开发具有不同配置和施工细节的全砌体框架系统，并通过广泛的实验测试和数值研究研究其在平面内和平面外荷载下的结构行为。预计项目完成后，可以提出适用于行业实践的设计和分析的建设性建议。作为长期目标之一，该研究的实验和分析结果将用于建立一套统一的方程和设计图表，以考虑纳入当前的加拿大全砖石填充框架砖石设计标准。