Dynamic Response of Diaphragms

隔膜的动态响应

• 批准号: 8722871
• 负责人: Max Porter
• 金额: $ 2.01万
• 依托单位: Iowa State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-10-15 至 1991-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8722871&HistoricalAwards=false
• 关键词: Dynamic; Response; Diaphragms

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 influence 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 concentrates on a lumped mass parameter floor slab spring system model to be used for dynamic analysis of buildings. This includes hysteretic modeling for horizontal floor systems consisting of composite steel-deck-reinforced slabs and concrete hollow-core precast plank slabs. This research develops an analytical non-linear model of load- displacement history of horizontal floor systems to provide associated displacements and stiffnesses for an integrated dynamic spring model. It provides a computer model using experimental data collected from other masonry researchers. This project is part of the U.S.-Japan Coordinated Program for Masonry Building Research and the Technical Coordinating Committee for Masonry Research (TCCMAR) Program.

砌体结构包括建筑物的很大一部分 建筑在美国S.和世界 配筋砌体 在中等到更高的地震中，建筑使用正在增加 经济性、消防安全性、 建筑的灵活性和易于施工。 本 砌体结构分析与设计现状及材料 和建筑技术并不能实现一个准确的 预测建筑物在横向荷载下的行为， 地震荷载 在美国，砖石建筑的设计和 建立了方法，代码和标准， 混合工作应力方法，经验规则， 确定许用应力值的有问题的方法。 石膏也是一种复杂的建筑材料， 大量的设计和施工变量， 影响最终产品配置及其在 地震荷载 为了描述地震反应， 砖石建筑，有必要制定的基本 确定基本设计方法知识库 符合安全和经济要求。 本研究计画集中于一集中质量参数 一种用于动力分析的楼板弹簧系统模型 建筑物。 这包括水平方向的滞后建模 由复合钢桥面板组成的楼盖系统 板和混凝土空心预制板。 这 研究开发了负荷的分析非线性模型， 水平楼板系统的位移历史， 相关的位移和刚度， 动态弹簧模型 它提供了一个计算机模型， 从其他砌体研究人员那里收集的实验数据。 这个项目是美国的一部分-日本协调计划 大型建筑研究与技术协调 Massimo研究委员会（TCCMAR）