Sürdürülebilir Kalkınma Amaçları

• 1
• 1

• MakaleAçık Erişim2023/r/bayburt/16605
  Optimum parameters for adjacent structures coupled by fluid viscous dampers considering soil‒structure interaction

  Bayrak, Osman Ünsal; Hatipoğlu, Yavuz Selim; Düzgün, Oguz Akın

  In this paper, the optimum conditions which ensure that the resulting minimum base shear force and minimum roof displacement for two adjacent frame structures inter-connected by fluid viscous dampers, including soil-structure interaction (SSI) effects under seismic excitation were presented. A two-dimensional (2D) finite element analysis was carried out with the Taguchi method. As non-reflecting boundaries, vis-cous boundary conditions were used on the edges of finite soil region. An optimization study was carried out for four parameters such as soil type, height ratio of the frames, damping coefficient of viscous damper, and the location of the viscous damper each with four levels. The optimum conditions which minimize maximum roof displace-ments and the maximum base shear forces have been obtained. The most affecting parameter on the system response was found to be soil type. It was also found that the sufficient damping coefficient of the viscous damper is equal to 1x105 N.s/m for min-imum response. The minimum system response can be achieved by using only one damper. It can be drawn that the Taguchi method can be used with the finite element (FE) method for determining optimum conditions of a soil-structure system for min-imum system response.

  AtıfOpenAlex1

  İncele
• MakaleAçık Erişim2020/r/bayburt/14988
  A study on seismic isolation of building used LRB

  Yurdakul, Muhammet; Yildiz, Burak

  Base isolation system with lead rubber bearing (LRB) is commonly used to preventstructure against to damage of earthquake. Design of LRB system is detailed in thisstudy. The isolated building with LRB design according to Uniform Building Code(UBC-97) and fixed building were examined. The six-storey building with LRB andfixed building were modelled in SAP2000 with the same dynamic loads. The relativefloor displacement and internal forces of the seismic isolated and fixed building arecompared. In addition, transverse and longitudinal reinforcement of any axis of seismic isolated and fixed building are compared. Analyse results showed that effectiveness of using seismic isolation system on building. The weight of longitudinal andtransverse reinforcement of isolated building is smaller than fixed building about36%, 40% respectively.

  • 
  • 
  AtıfOpenAlex2·TR Dizin1

  İncele
• MakaleAçık Erişim2020/r/bayburt/14986
  Use of trigonometric series functions in free vibration analysis of laminated composite beams

  Kahya, Volkan; Turan, Muhittin

  In this study, free vibration analysis of layered composite beams is performed by using an analytical method based on trigonometric series. Based on the first-ordershear deformation beam theory, the governing equations are derived from the Lagrange’s equations. Appropriate trigonometric series functions are selected to satisfythe end conditions of the beam. Navier-type solution is used to obtain natural frequencies. Natural frequencies are calculated for different end conditions and laminastacking. It was seen that the slenderness, E11/E22 and fiber angle have a significanteffect on natural frequency. The results of the study are quite compatible with theliterature.

  AtıfTR Dizin1

  İncele