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Experiment Research and Theoretical Analysis on Reinforced Concrete Columns Strengthened with Aramid Fiber Reinforced Polymer under Eccentric Loading

Author: LiuJiaPeng
Tutor: SunJing
School: Xi'an University of Technology
Course: Structural Engineering
Keywords: Reinforcement Aramid fiber cloth Concrete columns Secondary load
CLC: TU375
Type: Master's thesis
Year: 2009
Downloads: 29
Quote: 0
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Abstract


In recent years, using fiber material repair , reinforcement of the reinforced concrete structure of the new technology , paid much attention in the international community and has received more applications and development . Paste Fiber Reinforced , is a safe , reliable , economical, efficient method of reinforcement . In this paper, based 11 Genzhu destructive testing , test AFRP large eccentric compression reinforced concrete column . Amount of FRP reinforcement , eccentric distance , the degree of pre-loaded , Uninstall the extent of the impact of several changes in the parameters of the reinforcement effect . The results show that : the pull the side longitudinal paste FRP , the bearing capacity of the specimen significantly improved in the large bias column ; the reinforcement column 's bearing capacity increases with the increase in the number of layers of fabric , but the degree of improvement of the bearing capacity of the fiber cloth reinforcement layers are not linear growth relationship ; the aspect to paste aramid fiber reinforced concrete eccentric compression columns improve AFRP is superior longitudinal paste ; reinforced the same way , the appropriate reduce the eccentric distance can improve reinforcement effect ; lag the size of the strain is to determine the key factors secondary reinforcement effect of the force structure , as far as possible before the structure reinforcement uninstall without having to wade to completely uninstall , just uninstall the original limit bearer less than 50% of the force can be obtained compared with a good reinforcing effect ; reinforcing effect is mainly related to the stress level of the reinforcement when the column , the loading history of the column has little effect on the structural reinforcement . Derived on the basis of the plane section assumption longitudinal paste aramid fiber cloth large eccentric compression column normal section bearing capacity reinforcement formula and calculation of the theoretical results with the experimental results were compared . The results show that the calculation of this article with the experimental error is smaller , safer and available for reference reinforcement design .

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CLC: > Industrial Technology > Building Science > Building structure > Concrete structure,reinforced concrete structure > Reinforced concrete structures
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