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.

许多当代建筑物在地震期间倾向于形成软层机制。这种行为的特点是大量的需求集中在建筑物的一个楼层。这些需求最终会限制整个系统的能力，并增加结构和非结构的损坏，导致结构倒塌。该奖项支持开发相对较新的“脊柱”系统优点的研究。新的系统利用一个脊柱，将建筑物中的所有楼层联系在一起，迫使它们作为一个单元，这样就不允许损害集中在一个楼层。如果有效，该系统可能成为在地震事件期间适当的结构性能所必需的。本研究将在国立台湾大学进行，由K.C.教授指导。这项研究将试图量化脊柱的使用和它减轻软层的能力之间的关系。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实施到设计实践中。本研究的目的是解决以下问题的脊柱系统：（1）什么是影响，允许屈服的桅杆，而不是设计它是完全弹性的？(2)如果在地震事件期间，桅杆外部的非弹性部分严重损坏并表现出实质性的劣化，对系统有什么影响？(3)事件发生后，就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。这个NSF EAPSI奖支持美国研究生的研究，并与台湾科技部合作资助。