Earthquake Type Loading on R/C Beams to Column Connections with Wide Beams

宽梁 R/C 梁与柱连接处的地震型荷载

• 批准号: 9122704
• 负责人: James Wight
• 金额: $ 14.72万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-07-15 至 1995-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9122704&HistoricalAwards=false
• 关键词: Earthquake; Type; Loading; Beams; Column

Moment resisting R/C frames are the most common type of structural system used for low to moderate rise structures in regions of high seismic risk. If properly designed and detailed they are very ductile systems capable of enduring the most severe earthquake input motions. At least two common connection problems have not been adequately researched, namely wide beam connections and eccentric beam connections. Due to the lack of experimental studies for these two special cases, conflicting design recommendations have been developed. Wide beam connections are permitted by ACI Committee 318 in seismic zones. However, citing the lack of research, Committee 352 does not allow the use of wide beam connections in seismic zones. The goal of this research study will be to generate information through analytical and experimental studies on the behavior of these special connections under large load reversals and to develop tentative design recommendations. The focus of this project however, will be on connections with wide beams. This research effort is expected to develop safe design guidelines for seismic reinforced concrete beam to column connections with wide beams.

抗弯矩R/C框架是在高地震风险地区用于中低高度结构的最常见的结构体系。如果设计和细节得当，它们是非常具有延展性的系统，能够承受最剧烈的地震输入运动。至少有两种常见的连接问题没有得到充分的研究，即宽梁连接和偏心梁连接。由于缺乏对这两种特殊情况的实验研究，人们提出了相互矛盾的设计建议。ACI 318委员会允许在地震带进行宽梁连接。然而，由于缺乏研究，352委员会不允许在地震带使用宽梁连接。本研究的目的是通过分析和实验研究这些特殊连接在大载荷逆转下的行为，并制定初步设计建议。然而，这个项目的重点将放在宽梁的连接上。这项研究工作有望为宽梁的抗震钢筋混凝土梁与柱连接制定安全设计指南。