Response of Reinforced Masonry Building Systems

钢筋砌体建筑系统的响应

• 批准号: 8612476
• 负责人: Daniel Abrams
• 金额: $ 20.69万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-01-01 至 1990-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8612476&HistoricalAwards=false
• 关键词: Response; Reinforced; Masonry; Building; Systems

Masonry construction comprises a large portion of building construction in the U.S. and the world. Reinforced masonry construction use is increasing in moderate to higher seismic zones because of its apparent features of economy, fire safety, architectural flexibility and ease of construction. The present state of masonry structural analysis and design, and materials and construction technologies does not enable an accurate prediction of building behavior under lateral loads such as seismic loads. In the U.S., masonry buildings are designed and built with methods, codes and standards that rely upon a mixture of working stress methods, empirical rules, and questionable methods for determining allowable stress values. Masonry is also a complex building material because of the large number of design and construction variables which influenoe the final product configuration and its response under seismic loads. In order to describe the seismic response of masonry buildings it is necessary to develop the fundamental knowledge base to determine basic design methodologies consistent with safety and economic requirements. This research project will investigate the dynamic response of a reinforced masonry building system with a known force-deflection hysteresis. It will focus on the interdependence of the softening of reinforced concrete masonry structures and the sequence of destructive earthquake motions. Three identical test structures will be fabricated at one-quarter scale, and subjected to static and dynamic lateral forces. Numerical procedures will be used to help interpret measurements. The results of this research project will be used to assess the use of scale models for predicting the behavior of full scale reinforced masonry structures by making comparisons with previous full scale research results. This will influence the design practice. The principal investigator is highly qualified to conduct the work and the institution provides excellent support facilities. An award is recommended for the first year of this two-year complete research project.

砌体建筑包括美国和世界的大部分建筑建设。 加固的砌体建筑使用的使用在中等至更高的地震区域中增加，因为其经济明显的特征，消防，建筑灵活性和易于构造的特征。 砖石结构分析和设计的当前状态以及材料和构造技术不能准确预测横向负载（例如地震载荷）下的建筑行为。 在美国，砌体建筑物的设计和建造是由依靠工作压力方法，经验规则和可疑方法的方法，代码和标准设计的，以确定允许的应力值。 砌体也是一种复杂的建筑材料，因为大量的设计和构造变量影响了最终产品配置及其在地震载荷下的响应。 为了描述砖石建筑的地震反应，有必要建立基本知识基础，以确定与安全和经济需求一致的基本设计方法。 该研究项目将研究具有已知力逆转滞后的增强砌体建筑系统的动态响应。 它将集中于钢筋混凝土砌体结构的软化和破坏性地震运动的序列的相互依存关系。 三个相同的测试结构将以四分之一的比例制造，并受到静态和动态的侧向力。 数值程序将用于帮助解释测量。 该研究项目的结果将用于评估量表模型的使用，以通过与以前的全尺度研究结果进行比较来预测全尺寸加固砌体结构的行为。 这将影响设计实践。 首席调查员有资格从事这项工作，该机构提供了出色的支持设施。 为期两年完整的研究项目的第一年，建议奖励奖励。