LEE- Çevre Kontrolü ve Yapı Teknolojisi-Yüksek Lisans

Bu koleksiyon için kalıcı URI

http://hdl.handle.net/11527/19240

Gözat

Yazar "Beceni, Ceyda" ile LEE- Çevre Kontrolü ve Yapı Teknolojisi-Yüksek Lisans'a göz atma
  • Öge
    Investigation of fire spread in industrial wooden buildings with numerical simulation
    (Graduate School, 2024-06-27) Beceni, Ceyda ; Serteser, Nuri ; 502211501 ; Environmental Control & Building Technology
    Wood, which is used in traditional Turkish houses, is nowadays mostly replaced by concrete building materials. With the increase in technological possibilities, the use of building systems produced with industrial wood is becoming widespread in developed countries. The use of wood as a structural element and system in a building offers many advantages: wood material is sustainable, resistant to earthquakes, more aesthetic, more economical, and practical structural systems can be built as a result of the production of suitable tree species. The main objective of the thesis is to investigate the effects of temperature, flame and smoke propagation in case of fire when industrial wood is used in different structural forms in buildings. The studies carried out for this purpose analyzed the temperature, flame and smoke movement in case of fire in model buildings with three different structural systems produced using industrial wood elements. These systems are categorized as panel systems, frame systems, and hybrid systems inspired by existing buildings in various countries of the world. As a reference, the fire situation in a model building made of reinforced concrete, which is a widely used structural material today, is also considered. The fire behaviour of the reference building and four model buildings were investigated by performing fire analyses in the FDS-based Pyrosim program. The analyses were carried out in a model building with 5 stories and 2 flats on each floor in the residential use class. In the first part, the objectives, scope, and limits of the thesis are presented. It is explained why this topic was chosen and which methodology was used in the research. Studies on the subject in our country and in the world have been examined and these studies have been mentioned. In the second part, information about industrial wood material is given. Industrial wood types are mentioned and their usage possibilities are mentioned. Wooden building systems produced from these materials are mentioned and various buildings in the world where these systems are used are given as examples. The behavior of timber building material in case of fire and the passive and active measures to be taken in response to it are expressed. In addition, the regulations on the protection of wood against fire in various fire regulations in our country and in the world are explained at the end of the second part. In the third section, the methodology used in the study is given. Information about the software used for numerical simulation is given. The characteristics of the model building in the numerical simulation are introduced, and explanations are made about where the systems consisting of reinforced concrete and industrial wood elements are used in the model building. Then, the fire simulation model of the designed model building created in Pyrosim environment was introduced. Parameters such as where the fire starts, HRR value, duration of the numerical simulation, and the assumptions made are expressed. In the fourth section, the results of numerical fire simulation of four different structural systems are evaluated separately and the differences between them are analyzed. The results are evaluated with visuals and graphs taken at periodic intervals. In the fifth section, explanations and comments on the findings are made. Among the four different uninsulated systems, the reference reinforced concrete building is the system with the least heat and smoke emission between the spaces and in the building core. Compared to the reinforced concrete system, the hybrid system has slightly more heat and smoke emissions. This is likely due to the use of both industrial timber frame and concrete together. It has been observed that the temperature and smoke emission in the timber frame system is faster and more than in the hybrid system. The building constructed with the panel system was determined as the system with the fastest temperature and smoke emission.