Performance Based Wind Engineering: Interaction of Hurricanes with Residential Structures

摘要本研究的目的是建立木结构建筑风荷载空间变化与结构荷载路径之间的关系。通过对已有风洞数据的分析，应用数据库辅助设计方法和1/3比例的木结构住宅结构模型试验，开发了结构影响面，并用于预测屋架与墙板连接的荷载时程。此外，通过结构的荷载转移是根据使用飓风模拟器产生的空间变化的模拟风荷载来确定的。可交付成果包括确定用于预测通过木框屋顶的结构荷载分布的影响面，以及评估应用于木框结构的数据库辅助设计方法。本研究将为住宅结构的性能化风工程提供初步的依据，希望通过性能化设计方法的应用，完善木结构建筑的设计方法。更广泛的影响将通过教育和技术转让努力实现。研究结果将通过非政府组织参与的ASCE/SEI委员会传播。面向代表性不足群体的学生和本科生研究经验的招生工作将与现有的多元文化事务计划协调。研究生教育、指导和培训将使用形成性和终结性评估方法，并通过学生和PI之间的合作进行。

AbstractThe objective of this research project is to establish the relationship between spatially varying wind loads and structural load paths in wood-framed buildings. Through a combination of analysis of existing wind tunnel data, applying database-assisted design methodology and experimental tests on a 1/3-scale model of a wood-framed residential structure, structural influence surfaces will be developed and used to predict the load time-history on roof truss-to-wall plate connections. Further, load transfers through the structure are determined from spatially varied simulated wind loads generated using the Hurricane Simulator. Deliverables include determination of influence surfaces used to predict the structural load distributions through a wood-framed roof and an evaluation of the database-assisted design methodology as applied to wood-framed structures. The research will provide input a preliminary basis for performance-based wind engineering of residential structures.The research is expected to improve the design methods for the wood frame buildings through the use of the performance-based design approach. The broader impacts will be achieved through educational and technology transfer efforts. Research results will be disseminated through the ASCE/SEI committees in which the PI is involved. Recruitment efforts focused on students from underrepresented groups and undergraduate research experiences will be coordinated with existing multicultural affairs programs. Graduate student education, mentorship and training will be done using formative and summative assessment methods and through collaboration among the students and the PI.