Study On Fire Resistant Behavior Of Fire Proof Glass Window

In the process of the social development, the high-rise building is increasingly becoming a symbol of the level of urban development. And during the rapid progress of social civilization,building fire is having a more and more big influence on people’s production and living, but for high-rise building fire prevention has become a difficult problem all over the world. In view of the high rise building fire spread, the concept of "fire insulation layer" is put forward, which has been used in the high-rise building fire and has made the glass windows most important in the vertical spread of high-rise fires. In this thesis, the fire resistance of fire-retardant-glass windows are analyzed, and the fire resistance time of that is studied under five different mechanical boundary conditions. However, previous studies of the thermal cracking analysis is only confined to the failure factor analysis and crack development, which did not carefully consider the effect of mechanical boundary constraints of fire-resistant glass, in this thesis, the room temperature distribution of a fire scenario in a five-star hotel in Shenyang has been carried out which is based on the thermal analysis and structure analysis theory, and fire simulation software FDS and the finite element analysis software ANSYS are used to analysis the internal temperature field distribution of glass plate and the temperature variation curve of center nodes which are distributed in the face to fire and back surface. The behavior of fire resistance of five under difference mechanical boundary conditions is analyzed by FDS and ANSYS. Mainly done the following work:1. The survey of fire load of high-rise building structure and the related fire simulation.Based on the vertical spread of high-rise building fire design concept “fire resistant layer”, fire load of high-rise building structure in a five-star hotel is surveyed, the real fire scenario is analyzed which gets real real fire scene temperature curve and heat release rate curve used by FDS, which is provided for the analysis of fire temperature field distribution of glass plate in the fire scenario next.2. Considering the thermal performance and mechanical properties of glass materials under high temperature, temperature change on the surface of the glass measured by the fire simulation software FDS is applied in the finite element analysis software ANSYS to get the temperature distribution of the glass and the center of glass analyzed by the transient thermal analysis. The results are consistent with the assumption that the temperature distribution is linear in the thickness direction.3. The finite element simulation software ANSYS is used to analysis the glass plate heat-structure coupling analysis under five different mechanical boundary constraint conditions,which can calculate the glass plate thermal stress and thermal deformation in the fire scenarioand Von Mises stress distribution nephogram. Through comparative analysis, the most appropriate boundary constraint is obtained, which can provide reference for the installation of glass windows of the building structure and glass production.4. Fire-retardant glass windows were analyzed used by finite element analysis software ANSYS in the hope of life and death function, which can get fire resistant time of the glass window under five different mechanical boundary conditions of fire resistance in the fire scene,the optimum form of boundary constraints of glass can be obtained through comparative analysis.A reference was provided by the work of this thesis for the further study of the fire resistance performance of the fire-retardant glass windows, the fire protection design of the fire glass window the concept design of “fire resistant layer” of the the vertical spread in high-rise building structure.