| Fiber reinforced composite material (FRP) is a new kind of building material which is widely used in reinforced concrete structures because this kind of material possesses high strength, light weight, and great durability. At present the aging and losing problem of sluice gate in small and medium-sized channel is outstanding, and the damage problem of concrete gate that has been built is severe and that will restrict the efficiency of irrigation project or even influence the engineering safety. Developing a new type of gate has become a urgent needed product for market. According to the characteristics of FRP and through theoretical studies and experiments, it is found that the FRP is suitable for middle-and-small-sized hydraulic gates. Compared with the ordinary gates, The FRP gates have many advantages, for the light weight, high corrosion resistance, anti-theft, and beautiful looks. the application of FRP in design and manufacture process of sluice gate is still in the development stage at present, our research work mainly focused on the theoretical analysis and the integration of preparation technology, the sample that has been completed can quickly go through examination and into physical testing and application stage. In this paper, the research work is based on the study on the application technology in hydraulic structures with high performance composites (FRP) which is the priority subject of the Science and Technology Department of Shandong Province (2011GGH20208)(1) Based on Mechanics of Composites, behavior of FRP gate was conducted.(2) With consideration of 8 environments including water immersion test, acid test, alkaline test, freeze-thaw cycle test, elevated temperature test, low temperature test, wet-thermal test and ultraviolet rays test,24-group durability tests carried out by author and was test with tensile strength, tensile elongation and variation of elongation respectively. The influence on FRP gate mechanics behavior caused by the 8 environments was studied.(3) Based on the static loading test with four different types of FRP gate under two restriction conditions, the strain and deflection value of FRP gates were tested while the relationship between load and deflection were analyzed.(4) FRP gate with ANSYS was simulated under static loading s successfully. Comparison between experimental and numerical results was conducted. the results showed that finite element model proposed in the paper had high precision.(5)A numerical analysis with ANSYS was performed to optimize the design of FRP gate. The influence of four key factors including depth of deck, number of web, height of web and depth of web were studied and four specifications were designed.Based on the study, FRP gate was developed and used for the first time in China. Besides, reasonable ratio of deflection to span and optimized design scheme of FRP gate was proposed. |
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