Study of the Effect of Connection Stiffness on Structural Systems and Theire Structural Integrity


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Atak A.

Saudi Journal of Engineering and Technology, cilt.6, sa.2, ss.20-31, 2021 (Diğer Kurumların Hakemli Dergileri)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 6 Konu: 2
  • Basım Tarihi: 2021
  • Doi Numarası: 10.36348/sjet.2021.v06i02.002
  • Dergi Adı: Saudi Journal of Engineering and Technology
  • Sayfa Sayıları: ss.20-31

Özet

Structural systems consist of sub-systems and elements. Connection elements are needed for the subsystems and assembly and integration of these systems to the main system. Because the main system can fulfill its functional tasks when its assembly and integration with the subsystem is completed. Systematic static strength and dynamic behavior of structures, load bearing material and static cross-sectional properties as well as the strength and stiffness properties of the connections have a significant effect. The effect of the stiffness of the connection elements is higher in thin structural systems where the cross-sectional dimensions are much lower than the system dimensions. Assembly and integration are provided by using connection elements also in thin structural systems such as steel structure, scaffolding and rack structures. Therefore, the strength and stabilization of corner connections and fixing elements affect the entire system. However, while making systematic calculations, the structures, staying on the safe side, are modeled with rigid or rotatory hinged approach. When the connections are modeled as rotatory hinges, larger cross sections are required and support elements are added to prevent the system from becoming kinematic and collapse. With this approach, in buildings that require a lot of connection elements, the weight of the building increases too much and thus the cost increases. On the other hand, when the system is modeled with rigid approach, since the joints are unnecessarily excessively safe and the system's elasticity is very low, sudden overloads may result in collapse accidents and cause loss of life. For this reason, connection elements, especially in thin structures, must be modeled with real stiffness values and verified by tests under the prescribed loads. The purpose of this research is to examine the structural system design approach by modeling thin structure connection elements realistically and to create sensitivity in this regard. With this modeling method, it is aimed both to reduce costs and to prevent possible accidents caused by wrong modeling. Keywords: Connection elements, connection stiffness value, scaffolding and rack structures, lightweight structure design.