CAREER: Impact of Green Roof and Vertical Greenery Systems on Structural Performance for Multi-Hazard Scenarios

该教师早期职业发展（CAREER）奖将通过为绿色基础设施（GI）（即，绿色屋顶和垂直绿化结构），以减少与这些事件相关的金钱损失、死亡和停机时间。应对气候变化需要具有地理标志的可持续结构。这项研究将解决一个关键的差距，在资源的实践工程师和用户的建筑物与GI在地震/风的风险与一套应用指南的GI的重量变化，包括相关的要求，在各种水分含量水平的最佳结构性能。教育计划包括为本科生和研究生制作一个关于可持续结构复原力的教育视频系列，以及为来自代表性不足群体的五名大学学生助理提供研究经验。此外，开放获取研究成果，设计指南和新的教育材料将告知加州州立大学系统的土木工程学生，在美国执业土木工程师，和公众消费者加强可持续性努力，减少气候变化和自然灾害事件的负面影响。该项目产生的数据将在国家科学基金会（NSF）支持的自然灾害工程研究基础设施数据库（https：//www.example.com）中公开提供。www.DesignSafe-CI.org该奖项支持NSF在国家减少地震灾害计划中的作用。 该奖项的目的是提前了解GI的敏感性，对结构行为的影响，以及作为缓解策略的潜力。有一个既定的需要，表征结构响应之间的可持续和弹性设计的综合努力，因为在GI使用的增加在过去几十年来已经超过了研究，以支持工程界在其设计工作。该项目的研究目标包括：（1）由于自然灾害（即，干旱、风暴潮）、自然生长和其他生命周期因素（即，保养不良）;（2）为提高抗震性能制定初始设计策略;（3）为考虑GI可变性的可持续结构创建一套变革性的设计指南。这将通过模态行为的敏感性分析和使用地震情景的非线性时程分析测试战略GI计划来实现。教育目标是培养下一代土木工程师，通过新的开放式教育材料了解可持续建筑设计，并向执业土木工程师和公众宣传可持续发展工作的积极影响，以减少气候变化和风/地震事件的负面影响。在GI设计中告知和建立工程信心将：（1）通过改进设计、建模和分析程序增加结构弹性;（2）减少与结构故障相关的人力/经济成本;以及（3）在促进可持续发展的同时增加地理标志的使用。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值进行评估，更广泛的影响审查标准。

This Faculty Early Career Development (CAREER) award will contribute to the resilience and capacity of communities to address climate change and recover from natural hazard events, such as earthquakes, by producing a novel design approach for green infrastructure (GI) (i.e., green roof and vertical greenery structures) to decrease monetary losses, deaths, and downtime associated with these events. Sustainable structures with GI are needed to tackle climate change. This research will address a critical gap in resources for practicing engineers and users of buildings with GI in regions with seismic/wind risk with a set of applied guidelines for weight variations of GI, including associated demands at various moisture content levels for optimal structural performance. The educational plan includes an educational video series on sustainable structural resilience for undergraduate and graduate students and research experiences for five university student assistants from underrepresented groups. Further, open access to research results, design guidelines, and new educational materials will inform civil engineering students in the California State University system, practicing civil engineers in the U.S., and public consumers to increase sustainability efforts and decrease negative impacts of climate change and natural hazard events. Data generated from this project will be made publicly available in the National Science Foundation (NSF)-supported Natural Hazards Engineering Research Infrastructure Data Depot (https://www.DesignSafe-CI.org). This award supports the NSF role in the National Earthquake Hazards Reduction Program. The goal of this award is advance knowledge on GI’s sensitivities, influences on structural behavior, and potential as a mitigation strategy. There is an established need to characterize structural response as a combined effort between sustainable and resilient design because the increase in GI usage over the past several decades has outpaced research to support the engineering community in its design efforts. The project’s research objectives include: (1) quantification of structural behavior distributions due to changes in the GI from natural hazards (i.e., drought, storm surge), natural growth, and other life-cycle factors (i.e., poor maintenance); (2) development of an initial design strategy for increased seismic performance; and (3) creation of a transformative set of design guidelines for sustainable structures considering GI variabilities. This will be achieved through sensitivity analyses of modal behavior and testing of a strategic GI plan using nonlinear time history analyses for a seismic scenario. The educational goals are to train the next generation of civil engineers to understand sustainable building designs with new, open-access educational materials and to inform practicing civil engineers and the public about the positive impacts of sustainability efforts that decrease the negative impacts of climate change and wind/seismic events. Informing and building engineering confidence in GI design will: (1) increase structural resilience with improved designs, modeling, and analysis procedures; (2) reduce the human/economic costs associated with structural failure; and (3) increase the use of GI while promoting sustainability.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.