ارزیابی عملکردی دیوارهای بتن مسلح متصل با میراگر تحت اثر زلزله حوزه دور و نزدیک

نوع مقاله : پژوهشی اصیل (کامل)

نویسنده
دانشگاه ازاد
10.48311/mcej.2025.99078.0
چکیده
در این مقاله رفتار دیوارهای بتن مسلح کوپله شده بلند مرتبه در معرض زلزله های حوزه نزدیک و دور بررسی شده است. در این سیستم تیر کوپله بتن مسلح معمولی وجود ندارد و عمل کوپله با مهاربندهای از نوع کمانش تاب با و بدون میراگرهای ویسکوز صورت میگیرد که علاوه بر استهلاک انرژی لرزه ای موجب ایجاد جفت نیروهای محوری در پایه‌های دیوار می‌شوند. سازه ها طبق رویه های آیین نامه طراحی شده و سپس مدل غیرخطی دیوار بتن مسلح با استفاده از المان های فیبری تهیه می شود. پاسخ‌های لرزه‌ای سازه‌ها نظیر دریفت بین طبقاتی، شکل‌پذیری انحنای پایه‌های دیوار، نسبت کوپله، جابجایی و نیاز برش پاسخ ها در معرض دو نوع رکورد ذکر شده بررسی و مقایسه می‌شوند. به طور متوسط، نتایج نشان می‌دهد که نسبت دریفت بین طبقه‌ای برای سیستم‌های بدون میراگر حدود 22درصد بیشتر از سیستمهای دارای میراگر است. طور متوسط، نتایج نشان می‌دهد که نسبت دریفت بین طبقه‌ای برای سیستم‌های بدون میراگر حدود 22درصد بیشتر از سیستمهای دارای میراگر است.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Performance of reinforced concrete walls with dampers under the influence of earthquakes in the near and far regions

نویسنده English

Hamid Beiraghi
Azaad Un.
چکیده English

In this article, the behavior of high-rise coupled reinforced concrete walls subjected to earthquakes in the near and far domain has been investigated. In this system, there is no ordinary reinforced concrete coupler beam and the coupler action is done with buckling restained type braces with and without viscous dampers, which in addition to the consumption of seismic energy, cause a pair of axial forces in the foundations of the wall. The structures are designed according to the regulations and then the nonlinear model of the reinforced concrete wall is prepared using fiber elements. Seismic responses of structures such as drift between floors, ductility of curvature of wall foundations, coupling ratio, displacement and shear requirement of the responses under the two types of records mentioned are investigated and compared. On average, the results show that the inter-floor drift ratio for systems without dampers is about 22% higher than for systems with dampers. In this article, the behavior of high-rise coupled reinforced concrete walls subjected to earthquakes in the near and far domain has been investigated. In this system, there is no ordinary reinforced concrete coupler beam and the coupler action is done with buckling type braces with and without viscous dampers, which in addition to the consumption of seismic energy, cause a pair of axial forces in the foundations of the wall. The behavior of high-rise coupled reinforced concrete walls subjected to earthquakes in the near and far domain has been investigated. In this system, there is no ordinary reinforced concrete coupler beam and the coupler action is done with buckling type braces with and without viscous dampers, which in addition to the consumption of seismic energy, cause a pair of axial forces in the foundations of the wall. The structures are designed according to the regulations and then the nonlinear model of the reinforced concrete wall is prepared using fiber elements. Seismic responses of structures such as drift between floors, ductility of curvature of wall foundations, coupling ratio, displacement and shear requirement of the responses under the two types of records mentioned are investigated and compared. on average, the results show that the inter-floor drift ratio for systems without dampers is about 22% higher than for systems with dampers. In this article, the behavior of high-rise coupled reinforced concrete walls subjected to earthquakes in the near and far domain has been investigated. In this system, there is no ordinary reinforced concrete coupler beam and the coupler action is done with buckling type braces with and without viscous dampers, which in addition to the consumption of seismic energy, cause a pair of axial forces in the foundations of the wall. The structures are designed according to the regulations and then the nonlinear model of the reinforced concrete wall is prepared using fiber elements. Seismic responses of structures such as drift between floors, ductility of curvature of wall foundations, coupling ratio, displacement and shear requirement of the responses under the two types of records mentioned are investigated and compared.On average, the results show that the inter-floor drift ratio for systems without dampers is about 22% higher than for systems with dampers.

کلیدواژه‌ها English

Reinforced concrete wall
viscous damper
shear wall
brace
earthquake
near field