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Research of Experiment on Mechanical Properties of Compressed Strenthening Eccentric Concrete Column with CFRP

Author: LiQian
Tutor: LiuZuo
School: Kunming University of Science and Technology
Course: Structural Engineering
Keywords: Experimental Research CFRP stenghten Concret column bearing capacity
CLC: TU375
Type: Master's thesis
Year: 2009
Downloads: 64
Quote: 0
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Abstract


Reinforced Concrete Buildings often in the state of insecurity because of some factors, such as defects of design or construction、the changes of use functional in the building、the actual increased loads or the external environment of structural factors such as corrosion. In order to ensure the safety condition, we must reinforced the structure to make sure these buildings can continue to use for us. CFRP reinforcement construction technology have some advantages of convenient、light weight、high strength high-performance、durabilty、and the disturbanceless etc. Because of the conspicuous of advantages and effects, the reinforcement patch technology has become the most widely used technology in Japan、the United States、South Korea、Europe and other countries and regions. However, the theory has’t very mature in many ways, hold back the application and promotion of this technology.The author has refered to many relevant information and documentation for this paper. There are some detailed inspections of the In this paper. find out the CFRP reinforced concrete structures and component’s research and development prospects. concluded the the current theories of CFRP reinforcement. Firstly, there are some thorough and detailed research for CFRP reinforced seismic behavior of the components and the structure. Sencondly, there are some systematic Shear Performance of research and the documents. Thirdly, there are some mature theorys and studys for CFRP reinforced Axially loaded concrete components, also have been relevant norms and calculation formulas. There are some shortages and disadvantages such as:1、The theoretical research of CFRP reinforced small eccentric concrete components are not yet ripe, and no applicable bearing capacity formula.2、There are less consideration of CFRP reinforced concrete structure’s lag effect.The article concluds all above points, and do some works as follow:1) To consult some relevant information, analysis the latest achievements and shortcomings of the CFRP reinforced concrete structure of progress, then determinee the experiment’s program of this article.2) To organize the experiment, according to the small bias column mechanical behavior research of different factors (eccentricity, concrete strength grade), have come to a components change’s regulation of different factors specimen which ultimated bearing capacity and ductility, and then mapping the relevant test curves.3) Comparing the different models and fitting the related test reinforcement curve, work out the load-horizontal strain curves in line which fits Segmented curves, the formar one is a Parabolic expression and the later is fits Logarithmic curve expression then made a comparison to related documents, the results showed that this test results is better. Load-vertical strain curves and the simplified model.4) By the experiment data and theoretical analysis, derived bearing capacity formula of rhe CFRP reinforced concrete column of small eccentric. Finally, contrast the conclusion among formula and experimental and ANSYS calculated data results, results showed that the there datas are in good agreement.

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