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Mechanics Behavior about Reinforced Concrete Cylinder of Eccentric Compression under High Temperature Exposure

Author: JiHaiLong
Tutor: ZhaoXiaoXing
School: Chang'an University
Course: Bridge and Tunnel Engineering
Keywords: Reinforced concrete cylinder Eccentric compression Fire Temperature field Ultimate load bearing capacity
CLC: TU311
Type: Master's thesis
Year: 2011
Downloads: 64
Quote: 1
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Abstract


Structures under high temperature in the fire, Two materials of reinforced concrete deterioration in performance, Building structure and components will occur within the redistribution of internal forces, Structural strength, Stiffness decreased, Significantly increase the deformation, Seriously undermine the carrying capacity of the structure, Even endanger the structural safety, So that the overall structure of local failure or collapse of the phenomenon, In this paper, reinforced concrete exposed to fire under eccentric compression of the mechanical properties of cylinders, Do the following content:(1) Summed up research production on thermal parameters and mechanics of steel and concrete under high temperature inside and outside of country, The mechanical properties of selected indicators for this article.(2) Through the theory of heat conduction, Finite element model for calculation of the temperature field of reinforced concrete cylinder of eccentric compression have been set up. Analysis of the temperature field of reinforced concrete cylinder of eccentric compression. Influence of parameters on reinforced concrete cylinder of eccentric compression failure load is analyzed. By calculating to find: time of the fire、section size and the number of heated face are main affected to failure load, Concrete cover are minor affected to failure load.(3) Computer program, Finite element model for calculation of the calculating failure load of reinforced concrete cylinder of eccentric compression have been set up. Analysis of the calculating failure load of reinforced concrete cylinder of eccentric compression. Influence of parameters on reinforced concrete cylinder of eccentric compression failure load is analyzed. By calculating to find:concrete strength、section size and steel ration are main affected to calculating failure load of reinforced concrete cylinder of eccentric compression, Concrete cover is minor affected to calculating failure load of reinforced concrete cylinder of eccentric compression.

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CLC: > Industrial Technology > Building Science > Building structure > Structure theory to calculate > Structural Mechanics
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