Innovative Techniques for Strengthening RC Frame Systems

加固 RC 框架系统的创新技术

• 批准号: 9221531
• 负责人: Michael Kreger
• 金额: $ 22万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-02-01 至 1996-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9221531&HistoricalAwards=false
• 关键词: Innovative; Techniques; Strengthening; RC; Frame

The objective of this project is to study the performance of a rehabilitation scheme which can be used to correct the "weak links" in a frame system, but will simplify the construction process and reduce the time and inconvenience associated with most rehabilitation projects. The procedure is based on the use of precast wall segments to make up the infill between columns and floors and to supplement the axial tensile capacity of the existing columns through the use of post-tensioned tendons extending vertically through the structure at the columns. The research is divided into three parts. The first part involves a study of techniques for constructing the panel closure strips and evaluating their performance. The second part is directed toward a study of various methods for transferring forces at the infill panel-existing frame interface. Finally, a large-scale model comprising several stories of the structure with infills will be constructed to verify performance and provide data on overall system response. This project is a part of research initiative on "Seismic Repair and Rehabilitation of Structures."

该项目的目的是研究康复计划的性能，该计划可用于纠正框架系统中的“弱环节”，但将简化施工过程并减少与大多数康复项目相关的时间和不便。 该过程基于使用预制墙片段来构成圆柱和地板之间的填充填充物，并通过使用后张紧的肌腱在圆柱的结构上垂直扩展，以补充现有柱的轴向拉伸能力。 该研究分为三个部分。 第一部分涉及对构建面板闭合条并评估其性能的技术的研究。 第二部分是针对在填充面板存在的框架界面上转移力的各种方法的研究。 最后，将构建一个大型模型，其中包括几个带有填充物的结构故事，以验证性能并提供有关整体系统响应的数据。 该项目是有关“地震修复和修复结构”的研究计划的一部分。