نوع مقاله : مقاله پژوهشی
موضوعات
عنوان مقاله English
نویسندگان English
The primary objective of this study is to assess the seismic performance and life-cycle cost of high-rise concrete structures equipped with repairable connections under earthquake excitations. To achieve this goal, three reinforced concrete buildings with 15, 20, and 25 stories were designed using the ITBS software. Subsequently, the seismic behavior of these structures was examined under two scenarios with and without the proposed system comprising precast concrete walls incorporating replaceable dampers at the four corners of each panel. Nonlinear dynamic analyses were conducted in the OpenSees environment using seven ground motion records. Seismic responses, including inter-story drift and floor acceleration, were evaluated for both the proposed system and conventional concrete shear wall systems. To enhance practical relevance, the life-cycle cost of the 15-, 20-, and 25-story models was also assessed for both structural configurations. Results indicate that the maximum inter-story drift of the 15-, 20-, and 25-story models utilizing the proposed system decreased by 50%, 40%, and 34.5%, respectively, compared to conventional concrete wall models. Similarly, the average floor acceleration response reduced by 63.9%, 57.4%, and 52.8%, respectively. Furthermore, the life-cycle cost of the proposed system was found to be 10%, 18%, and 30% lower than that of the conventional shear wall system for the corresponding models. Overall, the findings demonstrate that the proposed system, due to its repairability feature, significantly reduces seismic demands and life-cycle costs, thereby improving seismic performance and resilience of high-rise concrete structures in earthquake-prone regions.
کلیدواژهها English