- Eklemek veya çıkarmak istediğiniz kriterleriniz için 'Dahil' / 'Hariç' seçeneğini kullanabilirsiniz. Sorgu satırları birbirine 'VE' bağlacı ile bağlıdır. - İptal tuşuna basarak normal aramaya dönebilirsiniz.
Non-ductile, concentrically braced frames are a common lateral force-resisting system used in low-to-moderate seismic regions in the USA. However, their dynamic responses to earthquake ground motions have not been well examined. Structural engineers usually design them conservatively as brittle structures with a small response-modification factor, while building codes restrict their use to low-rise buildings. In this paper, seismic responses of two typical non-ductile concentrically braced frames, one of three storeys and one of nine storeys, were predicted through a neural network model. Twel ...Daha fazlası
The optimization of tuned mass damper (TMD) involves the attachment of a damper to a TMD unit. Although thissupplementary damping renders TMD to be operational under broad bandwidth inputs (i.e., wind excitation), italso considerably decreases the efficiency. In this paper, an alternative approach is suggested to eliminate therequirement for supplementary damping, hence to utilize TMD in full efficiency. For this purpose, combinedstructure/undamped TMD system is equipped with an active controller to track the response of an oscillatorwith natural frequency set to the operating frequency of the ...Daha fazlası
In this paper, optimum design of tuned mass damper for seismically excited structures is discussed. In thedesign process, a benchmark multi-degree of freedom system is considered, and the performance measureof the optimization criterion is selected as the H2and H1norms of the transfer function of the combinedtuned mass damper and building system. Differential evolution algorithm is then utilized to minimize theseobjective functions. The objective function choice on performance and the effectiveness of differential evo-lution optimization algorithm in comparison with other algorithms in the lit ...Daha fazlası
In optimization of multiple tuned mass dampers (MTMDs), certain restric-tions or preconditions such as uniform distribution of stiffness, mass, or fre-quency spacing had been applied for simplification, but in turn, solution ofindividual stiffness and damping parameters are not the true optima. Themain purpose of this paper is to obtain the true optima of individual stiffnessand damping parameters of MTMD system. In the proposed method, param-eters of TMD units are treated as free search optimization variables, and anefficient optimization algorithm, namely, artificial bee colony algorithm has ...Daha fazlası
Bu çalışmada perdelerin plandaki yerleşiminin kirişsiz döşemeli yapıların deprem performansına olan etkileri araştırılmıştır. Bu amaç ile perdelerin plandaki yerleşimleri burulma düzensizliği yaratmayacak şekilde simetrik ve burulma düzensizliği yaratacak şekilde düzensiz seçilerek iki ayrı 7 katlı kirişsiz döşemeli yapı tasarlanmış ve bu yapıların deprem performansı doğrusal olmayan artımsal itme analizleri ve zaman tanım aralığında analizler ile irdelenmiştir. Elde edilen sonuçlara göre perdelerin plandaki yerleşimlerinin yapının sünekliği açısından belirleyici olduğu gözlemlenmiştir.
In t ...Daha fazlası
Moment frames with gravity columns in reinforced concrete (RC) buildings have been used extensively for the last decade in the United States. Unlike traditional beam–column–slab structures, they provide some advantages in terms of construction time and architectural and economical aspects in design process. The system consists of gravity-only columns resting directly on slabs and seismic force–resisting moment frames. Reinforced concrete special moment frames in two principal directions are typically placed at the perimeter as a lateral force–resisting system. Even though the design procedure ...Daha fazlası
6698 sayılı Kişisel Verilerin Korunması Kanunu kapsamında yükümlülüklerimiz ve çerez politikamız hakkında bilgi sahibi olmak için alttaki bağlantıyı kullanabilirsiniz.