EAPSI: Evaluating the Seismic Performance of a New Building 'spine' Technology

EAPSI：评估新型建筑“脊柱”技术的抗震性能

• 批准号: 1515264
• 负责人: Barbara Simpson
• 金额: $ 0.51万
• 依托单位: Simpson Barbara G
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-06-01 至 2016-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1515264&HistoricalAwards=false
• 关键词: EAPSI; Evaluating; Seismic; Performance; New

Many contemporary buildings tend to form a soft story mechanism during an earthquake. This behavior is characterized by large demands concentrated in a single story of the building. These demands can ultimately limit the capacity of the entire system and increase both structural and nonstructural damage, leading to structural collapse. This award supports research to develop the merits of a relatively new 'spine' system. The new system utilizes a spine that ties all the stories in a building together, forcing them to behave as one unit so that damage is not permitted to concentrate in a single story. If effective, this system could become essential for suitable structural performance during seismic events. This project will be conducted at National Taiwan University in Taipei, Taiwan under the mentorship of Professor K.C. Tsai, a noted expert on innovative steel building systems.This study will attempt to quantify the relationship between the use of a spine and its ability to mitigate a soft story. There has been little research internationally addressing the specific details of the spine concept and how to implement a spine into design practice. The purpose of this study would be to address the following questions about a spine system: (1) What is the effect of allowing yielding in the mast rather than designing it to be completely elastic? (2) What is the effect on the system if the inelastic portion outside of the mast is significantly damaged and exhibits substantial deterioration during a seismic event? (3) What is the resiliency of the system in terms of the amount of residual drift associated with a mast system after an event? Special emphasis will be placed on the first of these questions. This NSF EAPSI award supports the research of a U.S. graduate student and is funded in collaboration with the Ministry of Science and Technology of Taiwan.

许多当代建筑在地震期间往往会形成软层机制。这种行为的特点是大量需求集中在建筑物的单层。这些要求最终会限制整个系统的容量，并增加结构性和非结构性损坏，导致结构性倒塌。该奖项支持研究开发相对较新的“脊柱”系统的优点。新系统利用一根脊柱将建筑物中的所有楼层连接在一起，迫使它们作为一个整体运行，这样损坏就不会集中在单个楼层上。如果有效的话，该系统对于地震事件期间合适的结构性能至关重要。该项目将在台湾台北国立台湾大学 K.C. 教授的指导下进行。 Tsai 是一位著名的创新钢建筑系统专家。这项研究将尝试量化脊柱的使用与其减轻软故事能力之间的关系。国际上很少有研究涉及脊柱概念的具体细节以及如何将脊柱应用到设计实践中。本研究的目的是解决有关脊柱系统的以下问题：（1）允许桅杆屈服而不是将其设计为完全弹性会产生什么影响？ (2) 如果桅杆外部的非弹性部分在地震事件中受到严重损坏并表现出严重恶化，会对系统产生什么影响？ (3) 就事件发生后与桅杆系统相关的残余漂移量而言，系统的弹性是多少？将特别强调这些问题中的第一个问题。该 NSF EAPSI 奖项支持美国研究生的研究，并由与台湾科学技术部合作资助。