|
Title |
Heat Transfer Analysis and Experiments of Reinforced Concrete Slabs Using Galerkin Finite Element Method
|
|
Keywords |
내화성능 ; 비선형비정상 열전달해석 ; 갤러킨 유한요소해석 ; 철근콘크리트 슬래브 fire resistance ; nonlinear transient heat flow analysis ; Galerkin finite element method ; reinforced concrete slabs |
|
Abstract |
A research was conducted to develop a 2-D nonlinear Galerkin finite element analysis of reinforced concrete structures subjected to high temperature with experiments. Algorithms for calculating the closed-form element stiffness for a triangular element with a fully populated material conductance are developed. The validity of the numerical model used in the program is established by comparing the prediction from the computer program with results from full-scale fire resistance tests. Details of fire resistance experiments carried out on reinforced concrete slabs, together with results, are presented. The results obtained from experimental test indicated in that the proposed numerical model and the implemented codes are accurate and reliable. The changes in thermal parameters are discussed from the point of view of changes of structure and chemical composition due to the high temperature exposure. The proposed numerical model takes into account time-varying thermal loads, convection and radiation affected heat fluctuation, and temperature-dependent material properties. Although, this study considered standard fire scenario for reinforced concrete slabs, other time versus temperature relationship can be easily incorporated.
|