Evaluating Structural Resilience in Green Infrastructure: Load Effects and Dynamic Behavior of Steel Moment Frames
Denise Steffen
School of Engineering
Faculty Supervisor: Jenna Wong
This research evaluates the impact of green roofs on the seismic performance of a three-story steel moment frame structure. As cities prioritize sustainable architecture, green roofs and green walls are increasingly integrated into buildings. However, their added weight and structural characteristics can affect a building's seismic behavior. Using ETABS software, this study models various green roof configurations, including shallow and deep layouts, to examine their effects on the structures period, mode shapes, flexibility, and torsional motion. The results reveal that deeper, saturated green roofs significantly increase the structure's natural period, making it more flexible and responsive to seismic loads. Additionally, asymmetrically placed green roofs induce torsional effects that could compromise the structure's stability. The findings highlight the need for careful design consideration when integrating green roofs, with potential recommendations for structural reinforcements to mitigate seismic risks. Future research will include Mass Irregularity Checks to ensure compliance with ASCE 7 seismic standards, further analysis of green walls, and an exploration of how green infrastructure influences the dynamic response of buildings. This study aims to inform building design standards and guidelines, enabling the safe integration of green roofs and walls into urban environments while maintaining structural resilience under earthquake loading.