Mechanism of Concrete Confinement by Rectilinear Ties

直线拉杆混凝土约束机制

• 批准号: 8617266
• 负责人: Shamim Sheikh
• 金额: $ 19.53万
• 依托单位: University of Houston
• 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: 1987-02-01 至 1991-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8617266&HistoricalAwards=false
• 关键词: Mechanism; Concrete; Confinement; Rectilinear; Ties

Many structures in earthquake prone areas are constructed using reinforced concrete. In seismically resistant design, proper behavior of the reinforced concrete structural elements depends a great deal on the ductility of the structure. Confinement of concrete in critical locations plays a significant part in achieving ductile behavior of structures. In this research, basic mechanisms of confinement by rectilinear ties will be investigated using analytical models and experiments with laboratory specimens. A rational method will be developed to determine the required amount and configuration of confining steel which will result in economical and safe design of structures. Results from this research are expected to provide the basis for modifications and recommendation in the confinement provisions of various U.S. design codes such as American Concrete Institute ACI 318 and SEAOC. The Principal Investigator is highly qualified to conduct the research and the institution provides excellent support facilities. An award is recommended for the first year of this two-year complete project.

地震多发区的许多建筑物都是用 钢筋混凝土 在抗震设计中， 钢筋混凝土结构元件的强度在很大程度上取决于 结构的延展性。 关键部位的混凝土约束在 实现结构的延展性。 在这项研究中，基础 将采用以下方法研究直线系材的约束机制： 分析模型和实验室标本的实验。 一个理性 将制定一种方法来确定所需的数量， 约束钢的配置，这将导致经济和 结构的安全设计。 这项研究的结果预计将 提供修改和建议的基础， 各种美国设计规范的限制规定，如美国 混凝土协会ACI 318和SEAOC。 主要研究者具有开展研究的高资质 学校提供了一流的支持设施。 一个奖项是 建议在这个为期两年的完整项目的第一年。