Evaluation of Repair and Rehabilitation Strategies for Tilt-Up Construction

倾斜施工修复和修复策略的评估

• 批准号: 9416354
• 负责人: Sharon Wood
• 金额: $ 6万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-09-01 至 1996-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9416354&HistoricalAwards=false
• 关键词: Evaluation; Repair; Rehabilitation; Strategies; Tilt

9416354 Wood Tilt-up construction is widely used throughout the U.S. for low- rise industrial and warehouse facilities. Tilt-up buildings are economical to construct, however, they are susceptible to seismic damage. Approximately 25% of the tilt-up buildings in the epicentral area sustained structural damage during the 1994 Northridge earthquake. The objective of this project is to develop procedures for evaluating existing tilt-up construction and designing cost- effective rehabilitation schemes. Establishing a link between the structural characteristics of the building and the expected performance during an earthquake is emphasized in this study. In-situ tests of tilt-up buildings will be conducted to evaluate diaphragm stiffness, damping characteristics, and displacement distributions. The results of these tests, together with data collected on tilt-up buildings damaged in the Northridge earthquake, will be used to validate detailed analytical models under development. Existing retrofit requirements as well as the latest proposed changes will be reviewed and summarized. Typical rehabilitation schemes will be evaluated. Alternate analytical models and design methodology that are consistent with dynamic behavior of tilt-up construction will be developed. The results of this investigation will provide a basis for evaluating the seismic vulnerability of and developing cost- effective rehabilitation schemes for the large number of potentially hazardous tilt-up buildings throughout the U.S. This is a Northridge Earthquake project, involving complementary efforts between the University of Illinois and a consulting engineering firm, Wiss, Janney, Elstner and Associates. ***

9416354木材倾斜式建筑在美国各地被广泛用于低层工业和仓库设施。倾斜建筑建造经济，但它们容易受到地震破坏。在1994年的北岭地震中，震中地区大约25%的倾斜建筑遭受了结构破坏。该项目的目标是制定评估现有倾斜建筑和设计具有成本效益的修复方案的程序。在这项研究中，强调建立建筑物的结构特征与地震期间的预期性能之间的联系。将进行倾斜建筑物的现场测试，以评估横隔板的刚度、阻尼性和位移分布。这些测试的结果，连同收集的北岭地震中受损的倾斜建筑的数据，将用于验证正在开发的详细分析模型。将审查和总结现有的改装要求以及最新的拟议变化。将对典型的康复计划进行评估。将开发与倾斜结构的动态行为一致的替代分析模型和设计方法。这项调查的结果将为评估美国各地大量潜在危险的倾斜建筑的地震易损性和制定具有成本效益的修复方案提供基础。这是一个北岭地震项目，涉及伊利诺伊大学和咨询工程公司Wiss，Janney，Elstner and Associates之间的互补努力。***