CAREER: Hybrid Simulation Platform for Seismic Performance Evaluation of Structures Through Collapse

职业：通过倒塌评估结构抗震性能的混合模拟平台

• 批准号: 0748111
• 负责人: Gilberto Mosqueda
• 金额: $ 40万
• 依托单位: SUNY at Buffalo
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-03-01 至 2014-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0748111&HistoricalAwards=false
• 关键词: CAREER; Hybrid; Simulation; Platform; Seismic

The research objective of this Faculty Early Career Development (CAREER) Program project is to enhance the hybrid simulation methodology to evaluate the performance of large scale structures loaded up to collapse. Hybrid simulation, which combines numerical simulation with experimental simulation of structural elements, provides a more realistic, reliable, and economical approach to testing structural systems under earthquake loads. Fundamental contributions, addressing issues related to numerical, experimental and boundary condition errors and assumptions, will be made in the development of algorithms used in testing and validation procedures. In particular, the computational platform will provide capabilities for robust implicit integration algorithms and fault-tolerant distributed control strategies to enable testing of complex structural systems utilizing geographically distributed testing of its substructures. The resulting testing and simulation platform will be used to evaluate the seismic performance of large-scale steel moment frame structures from the onset of damage through collapse. Only key subassemblies will be experimentally tested and the global system response will be captured through interaction with the numerical model. The efficacy of hybrid simulations to predict collapse will be validated by comparing the results recently obtained from full scale testing in Japan. Upon its completion, the improved hybrid simulation platform developed in this project can be used to generate complete fragilities of structural components and systems from the onset of damage through collapse as required for next-generation performance-based earthquake engineering. It can also be used to assess the collapse safety margin of buildings inherent in current building codes. In particular, our understanding of the seismic performance of steel buildings will be improved through the large-scale hybrid testing program and numerical simulation studies. An integrated education and outreach plan will lead to development of new curriculum material and training of graduate and undergraduate students in various stages of structural design process such as preliminary design, computer simulation, design revision, construction and physical testing. The outreach activities are planned in partnership with the University at Buffalo Graduate School of Education and local schools districts, and they will include underrepresented students.

这个教师早期职业发展（CAREER）计划项目的研究目标是提高混合仿真方法来评估大规模结构加载到崩溃的性能。 混合模拟将结构元件的数值模拟与实验模拟相结合，为在地震荷载下测试结构系统提供了一种更真实、可靠和经济的方法。 基本的贡献，解决有关问题的数值，实验和边界条件的错误和假设，将在测试和验证程序中使用的算法的发展。特别是，计算平台将提供强大的隐式集成算法和容错分布式控制策略的能力，使复杂的结构系统的测试，利用地理分布测试的子结构。由此产生的测试和仿真平台将用于评估大型钢框架结构从破坏到倒塌的抗震性能。只有关键的系统将进行实验测试，全球系统的响应将通过与数值模型的相互作用来捕获。混合模拟预测倒塌的有效性将通过比较最近在日本进行的全尺寸试验获得的结果进行验证。完成后，在这个项目中开发的改进的混合仿真平台可以用来生成完整的结构部件和系统的脆弱性，从破坏的开始，通过崩溃所需的下一代基于性能的地震工程。 它也可以用来评估现行建筑规范中固有的建筑物倒塌安全裕度。特别是，我们的理解，钢结构建筑的抗震性能将提高通过大规模的混合测试程序和数值模拟研究。综合教育和推广计划将导致编制新的课程材料，并在结构设计过程的各个阶段，如初步设计、计算机模拟、设计修改、施工和物理测试，对研究生和本科生进行培训。外联活动是与布法罗大学教育研究生院和当地学区合作规划的，将包括代表性不足的学生。