Collaborative Research: Frame-Spine System with Force-Limiting Connections for Low-Damage Seismic Resilient Buildings

合作研究：用于低损伤抗震建筑的具有限力连接的框架-脊柱系统

• 批准号: 1928906
• 负责人: Larry Fahnestock
• 金额: $ 74万
• 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: 2019
• 资助国家: 美国
• 起止时间: 2019-08-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1928906&HistoricalAwards=false
• 关键词: Collaborative; Research; Frame; Spine; System

This project will develop a new structural system that will protect buildings, their contents, and occupants during large earthquakes and will enable immediate post-earthquake occupancy. This earthquake-resilient structural system will be particularly valuable for essential facilities, such as hospitals, where damage to buildings and contents and occupant injuries must be prevented and where continuous occupancy performance is imperative. The new system will use practical structural components to economically protect a building from damaging displacements and accelerations. The project team will collaborate with Japanese researchers to study the new system with full-scale earthquake simulations using the 3D Full-Scale Earthquake Testing Facility (E-Defense) located in Miki, Japan, and operated by the National Research Institute for Earth Science and Disaster Resilience. This project will advance national health, prosperity, and welfare by preventing injuries and loss of human life and minimizing social and economic disruption of buildings due to large earthquakes. An online course on resilient seismic design will be developed and offered through the American Institute of Steel Construction night school program, which will be of interest to practicing engineers, researchers, and students across the country. Data from this project will be archived in the Natural Hazards Engineering Research Infrastructure (NHERI) Data Depot (https://www.DesignSafe-ci.org). This project contributes to NSF's role in the National Earthquake Hazards Reduction Program. The novel steel frame-spine lateral force-resisting system with force-limiting connections (FLC) that will be developed in this project will control multi-modal seismic response to protect a building and provide resilient structural and non-structural building performance. This frame-spine-FLC system will rely on a conventional, economical base system that resists a significant proportion of the lateral load. The system judiciously employs floor-level force-limiting deformable connections and an elastic spine to protect the base system. Integrated experiments and numerical simulations will provide comprehensive understanding of the new frame-spine-FLC system, including rich full-scale experimental data on building seismic performance with combined in-plane, out-of-plane, and torsional response under 3D excitation. The FLCs will be tested using the NHERI facility at Lehigh University. This project will be conducted in collaboration with an ongoing synergistic research program in Japan. The extensive dataset from this integrated U.S.-Japan research program will enable unique comparisons of structural and non-structural performance, including critical acceleration-sensitive hospital contents that directly affect the health and safety of patients. In addition, the dataset will enable the advancement of computational modeling for the assessment of building performance and the development of practical, accurate models for use in design that capture the complex 3D structural response that occurs during an earthquake.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该项目将开发一种新的结构系统，在大地震期间保护建筑物、其内容物和居住者，并使地震后立即入住成为可能。 这种抗震结构系统对于医院等重要设施尤其有价值，因为必须防止建筑物和内容物受损以及人员受伤，并且必须确保持续的占用性能。 新系统将使用实用的结构部件，以经济的方式保护建筑物免受破坏性位移和加速度的影响。 该项目团队将与日本研究人员合作，使用位于日本三木的3D全尺寸地震试验设施（E-Defense）进行全尺寸地震模拟，并由国家地球科学和灾害恢复研究所运营。 该项目将通过防止人员伤亡和最大限度地减少大地震对建筑物的社会和经济破坏，促进国民健康，繁荣和福利。一个关于弹性抗震设计的在线课程将通过美国钢结构研究所夜校项目开发和提供，这将是全国各地的执业工程师，研究人员和学生感兴趣的。本项目的数据将存档在自然灾害工程研究基础设施（NHERI）数据库（https：//www.example.com）中。www.DesignSafe-ci.org 该项目有助于NSF在国家减少地震灾害计划中发挥作用。将在本项目中开发的具有限力连接（FLC）的新型钢框架-脊柱抗侧力系统将控制多模态地震反应，以保护建筑物并提供弹性结构和非结构建筑性能。 这种框架-脊柱-FLC系统将依赖于传统的、经济的基础系统，该基础系统可抵抗很大比例的横向荷载。 该系统明智地采用地板水平力限制变形连接和弹性脊柱，以保护基础系统。 综合实验和数值模拟将提供新的框架-脊柱-FLC系统的全面理解，包括丰富的全尺寸实验数据的建筑物的抗震性能与组合的平面内，平面外，和扭转响应下的3D激励。 FLC将使用利哈伊大学的NHERI设施进行测试。 该项目将与日本正在进行的协同研究计划合作进行。 来自这个综合美国的广泛数据集-日本的研究计划将能够对结构和非结构性能进行独特的比较，包括直接影响患者健康和安全的关键加速度敏感的医院内容。 此外，该数据集还将促进建筑性能评估的计算建模，以及开发实用、准确的模型，用于捕捉地震期间发生的复杂三维结构反应的设计。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Modeling uncertainty of specimens employing spines and force‐limiting connections tested at E‐defense shake table

• DOI: 10.1002/eqe.3976
• 发表时间: 2023-07
• 期刊: Earthquake Engineering & Structural Dynamics
• 影响因子: 4.5
• 作者: B. Astudillo;David Rivera;Jessica Duke;B. Simpson;L. Fahnestock;R. Sause;J. Ricles;M. Kurata;T. Okazaki;Y. Kawamata;Zhuoqi Tao;Yi Qie