Control Of Intelligent Bridges Of Carbon Fiber Concrete

With new technology, new materials development, the development of modern bridge engineering is trend to intelligent structure control. This paper studies the carbon fiber reinforced concrete features and then through the effective use of smart features such as the electro-conductive, electro-thermal efficiency and so on of carbon fiber reinforced concrete, expects to explore a new type of "carbon fiber reinforced concrete bridges intelligent control methods." Therefore, it has done the following related research in this paper.(1)Analyze a large number of the current domestic and international carbon fiber concrete research data, integrated its Smart characteristics. And analysis the data of carbon fiber reinforced concrete bridge structure which applicable to the basic intelligent features - conductivity, electric effect.(2)Analyze and compares the differences of temperature gradient model and temperature stress in the domestic and international norms. Combining our country's norm "General Code for Design of Highway Bridges and Culverts" (JTG D60-2004) to give a reasonable temperature model which corresponding the actual circumstances of this study, and analyze its calculation principle.(3)Made of the basic tenets of carbon fiber reinforced concrete bridge, analyze and determine the ANSYS finite element model in application the theory of this paper.(4)Through utilizing the 3D finite element model "Solid70" of ANSYS to effective Simulate the beam's thermal conduction, obtaining a more accurate temperature field model of the structure. Then transform them into the effective temperature load on the internal forces 3D solid model "Solid45", and obtain the result of stress distribution in internal structure. Comparing theoretical results and ANSYS finite element model calculation results, Model simulation results are accurate. with establishing carbon fiber reinforced concrete beam (static-indeterminant structure) in a reasonable beneficial temperature field, the effect of loading capacity upgrade obviously.Utilizing beneficial temperature stress to enhance the loading capacity of structure is an new idea which will make it applied continuous beam bridge and the other static-indeterminant structure, and opened up new methods of the bridge development. It raises a new topic for development of the current intelligent bridge structure.