Performance Based Seismic Evaluation of Underground Structures

基于性能的地下结构抗震评估

• 批准号: 0000136
• 负责人: Julio Ramirez
• 金额: $ 12万
• 依托单位: Purdue Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-04-15 至 2004-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0000136&HistoricalAwards=false
• 关键词: Performance; Based; Seismic; Evaluation; Underground

0000136RamirezThe Daikai Station Kobe, Japan was the first underground structure not crossing an active fault the collapsed during an earthquake. Preliminary analysis and that of others have indicated that the middle column was grossly inadequate to resist lateral deformations. However, the Daikai failure is only a warning. The numerous examples of damage and even complete collapse of underground structures observed during the Kobe Earthquake help define a problem that merits serious investigation. Of great concern is that there may be in the USA and Japan, underground structures under similar conditions to the Daikai Station. The problem is multifaceted in that it requires that approaches be developed to both conduct the earthquake risk assessment of existing underground structures as well as the design of new ones, given the appropriate ground motion characteristics. This calls for clearly defining structural performance not only in terms of safety, but serviceability as well. The objectives of this research project are: Identification and evaluation of the load-transfer mechanisms between the ground and the structure during a seismic event, (2) Determination of the deformation capacity of reinforced concrete members during inelastic cycles of displacement, (3) Development of new techniques and criteria for seismic performance of cut and cover underground structures and identification of critical elements for cumulative damage assessment of cut and cover underground structures.The research team in this project includes USA and Japan based structural and geotechnical engineers from both academia and practice.This project is supported under the 3rd-year competition under NSF 98-36. "US Japan Cooperative Research in Urban Earthquake Disaster Mitigation."

0000136RAMIREZTHE DAIKAI站，日本科比是第一个未跨越地震期间倒塌的主动断层的地下结构。 初步分析和其他分析表明，中间柱严重不足以抵抗横向变形。 但是，Daikai失败只是警告。 在神户地震期间观察到的地下结构的损害，甚至完全崩溃的众多例子，有助于定义一个值得认真研究的问题。 最令人关注的是，在美国和日本，在与Daikai站相似的条件下，地下结构可能存在。 这个问题是多方面的，因为它要求开发出适当的地下运动特征的现有地下结构的地震风险评估以及新的设计。 这不仅需要在安全性方面，而且还可以清楚地定义结构性绩效。 该研究项目的目标是：在地震事件期间对地面和结构之间的负载转移机制的识别和评估，（2）确定钢筋混凝土成员的变形能力，（3）在位移无弹性周期期间（3）对新技术和标准的发展和覆盖层面的掩盖效果的发展，以确认地下效果，以掩盖地下结构，以掩盖地下结构，并掩盖了地下结构的结构。该项目的研究团队包括来自学术界和实践的美国和日本的结构和岩土工程师。该项目在NSF 98-36的第3年竞赛下得到了支持。 “美国日本城市地震缓解灾难的合作研究。”