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.

填充钢或钢筋混凝土（RC）框架的砌体墙已普遍用于现代建筑结构中，以用作分隔空间的隔板或用于建筑物封闭的覆层。还应理解，如果墙紧靠其边界框架建造，则填充物将与框架相互作用并参与载荷分担，从而改变框架系统的结构性能。以往的研究表明，适当设计的填充物提供了显着的强度，延性和能量耗散的框架系统在抵抗各种类型的横向载荷，即使在相当大的裂缝。本研究以砌体填充钢/钢筋混凝土框架结构为基础，提出一种新型的全砌体填充钢框架结构体系，并与传统的填充钢或钢筋混凝土框架结构体系进行比较，评价其结构性能。全砌体填充框架由一种材料（即砌体）制成，其中砌体填充物由砌体钢筋柱和系梁形成的砌体框架约束。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，因为消除了与钢或钢筋混凝土框架案例中的混凝土或钢筋混凝土行业协调的需要。全砌体填充系统旨在将边界元件（砌体柱和梁）和填充物联合收割机组合在一起，以在一种材料中形成有效的抗横向荷载系统。这将对砌体填充墙的设计和施工产生重大影响。本研究旨在开发具有不同构造和构造细节的全砌体框架体系，并通过大量的实验测试和数值研究来研究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，可就适用于工业实践的设计和分析提出建设性建议。作为长期目标之一，实验和分析结果的研究将被用来建立一套统一的方程和设计图表，被认为是列入目前的加拿大砌体设计标准的所有砌体填充框架。