ارزیابی مبتنی بر عملکرد برای هسته های بتن مسلح با ترازهای مختلف یک مهار بازویی کمانش تاب تحت نگاشت حوزه نزدیک و دور

از جمله مزایای ساختمان های بلند با هسته بتن مسلح می توان به هزینه  ساخت کمتر، سرعت احداث بیشتر و امکان  ایجاد معماری داخلی با فضای باز وسیع تر در مقایسه با سایر سیستمهای سازه ای بلند مرتبه اشاره کرد. با افزایش ارتفاع ساختمان، کنترل جابجایی جانبی این سازه ها در برابر بارهای لرزه ای با چالش روبرو میشود. بکارگیری مهار بازویی در سازه دارای هسته از راهکارهای مورد استقبال است.در این مقاله ابتدا سازه های بلند دارای هسته بتن مسلح با و بدون مهار بازویی تحلیل و طراحی می شود. مهار بازویی دارای مهاربندهای از نوع کمانش تاب بوده و اثر موقعیت آن در چند تراز مختلف مورد بررسی قرار میگیرد. در ادامه، مدلسازی هسته به کمک المانهای فیبری با رفتار غیر خطی برای دیوار و مهار بازویی در نرم افزار perform-3d انجام می شود و تحت اثر شتاب نگاشت های نزدیک گسل دارای پالس سرعت و دور از گسل قرار می گیرند و رفتار سازه شامل نمودارهای جابجایی نسبی بین طبقه ای، جابجایی جانبی، لنگر و برش بررسی می شود. نتایج نشان میدهد کمترین مقدار جابجایی جانبی نسبی بین طبقه ای مربوط به قرارگیری مهار بازویی در تراز 0.75 کل ارتفاع از تراز پایه است.

performance based evaluation of the brb outrigger in reinforced concrete cores under near-field event

advantages of high-rise buildings with reinforced concrete cores include lower construction costs, higher construction speeds, and the possibility of creating a wider outdoor architecture compared to other high-rise structural systems. as the height of the building increases, the control of lateral displacement of these structures against seismic loads is challenged. the use of arm restraint in structures with cores is one of the welcomed solutions. in this article, first, tall structures with reinforced concrete cores with and without arm restraints are analyzed and designed. the arm restraint has a buckling type brace and the effect of its position on several different levels is investigated. next, the core modeling is performed with the help of fiber elements with nonlinear behavior for the wall and arm restraint in software. interclass relative, lateral displacement, anchor and shear are investigated. the results show that the lowest amount of relative lateral displacement between classes is related to the placement of the arm restraint at the level of 0.75 total height from the base level. advantages of high-rise buildings with reinforced concrete cores include lower construction costs, higher construction speeds, and the possibility of creating a wider outdoor architecture compared to other high-rise structural systems. as the height of the building increases, the control of lateral displacement of these structures against seismic loads is challenged. the use of arm restraint in structures with cores is one of the welcomed solutions. in this article, first, tall structures with reinforced concrete cores with and without arm restraints are analyzed and designed. the arm restraint has a buckling type brace and the effect of its position on several different levels is investigated. next, the core modeling is performed with the help of fiber elements with nonlinear behavior for the wall and arm restraint in software. interclass relative, lateral displacement, anchor and shear are investigated. the results show that the lowest amount of relative lateral displacement between classes is related to the placement of the arm restraint at the level of 0.75 total height from the base level. advantages of high-rise buildings with reinforced concrete cores include lower construction costs, higher construction speeds, and the possibility of creating a wider outdoor architecture compared to other high-rise structural systems. as the height of the building increases, the control of lateral displacement of these structures against seismic loads is challenged. the use of arm restraint in structures with cores is one of the welcomed solutions. in this article, first, tall structures with reinforced concrete cores with and without arm restraints are analyzed and designed. the arm restraint has a buckling type brace and the effect of its position on several different levels is investigated. next, the core modeling is performed with the help of fiber elements with nonlinear behavior for the wall and arm restraint in perform-3d software. interclass relative, lateral displacement, anchor and shear are investigated. the results show that the lowest amount of relative lateral displacement between classes is related to the placement of the arm restraint at the level of 0.75 total height from the base level.