Retaining Structure Optimize Design For Artifical Ultrahigh Embankment In Three Gorges Reservoir

In this paper, the ultra-high artificial reclaimed roadbed affected area is located within the Three Gorges reservoir area, which is part of the Feng-yun highway. Fill Subgrade curved overall length 220.00m, the maximum fill thickness of 56.20m, the average fill thickness of 35.00m, from the very bottom to the top of the relative elevation to 83.00m, the total volume of disposable 1,330,000 m3. As the water level and topographic conditions make the roadbed slope Slope-free conditions, resulting in the proposed embankment is high and steep slope, it is difficult to guarantee the stability, the need for reinforcement.Now according to the design of reinforcement of the construction program as follows: in the high fill embankment at the bottom of the middle with the reinforced concrete pile cap, the combination of the C25 anchor stone tablets, as well as concrete gravity retaining wall on both sides of plate piles for the pile structure. Through to the original design document, as well as the high-PLAXIS roadbed fill the overall stability of the results of the analysis, we can see that the program in the structural safety and stability are in line with the requirements of the relevant norms. However, because of the existence of the structure of the central wall forms part of complex and difficult construction projects such as the volume of less than great, so this paper, the characteristics of the project to optimize the original design.Firstly, the author of the High-fill subgrade slope "after the first block to fill" the remainder of the construction process, as well as the characteristics of down force, filling in the treatment of a layered rolled in addition to, conventional measures such as foundation, but also put forward fill in the additional measures geogrid, the purpose is to increase the stability of filling their own to reduce the filling down the remaining power. Calculated results indicate that: reinforced after the decline of its remaining forces by reducing the value of 714.927kN, the original accounting for the remaining 18 percent decline in force. Secondly, the use of reinforcement programs in the remaining filling to reduce the decline in power on the basis of Author of the high fill embankment slope retaining the original structure of the program complex, difficult construction and engineering of the retaining wall of huge part of the anti-slide pile retaining reinforcement program to optimize the design.In this paper, reinforced through the introduction of measures to enhance the ultra-high artificial reclaimed its roadbed slope stability, reduce the remaining filling down power to simplify the retaining structure, and ultimately to a more economic, simple program of anti-slide pile. Such a comprehensive management program for high fill a similar project to provide reference support design.