Gravity, Cantilever, Buttress Retaining Wall Structure Optimization Of The Design And Selection

Retaining walls are widely used in the mountain areas as the supporting structures of the slopes of highways or railways and deep excavation of highrise buildings. It is necessary to analyze and design an optimum supporting structure in this field. It can ensure the security of highway and railway and the buildings and reduce the accidents of slope slide and debris flows. The traditional design is very complicated and inefficient. It needs to spend much more time of the designers to try repeating designs .It is impossible for designers to want to obtain a good and economic design result because of the design only basen on the experience of the designers. Based on the existing theories, the author founded the optimal structural models of gravity, cantilever and buttress retaining walls, and derived the second sliding surface theory of clay in this thesis. Based on complex method, the optimal design software of three retaining structures were designed, and optimal design of three retaining structures was carried on under the same conditions. The results of optimum structural design satisfy all constrain conditions. In this paper, through a large number of computations, the optimum design results for the different depth and soil profiles of the slope and excavation were compared and obtained optimum choice resultsof three supporting structural types. It upgrades the traditional optimum design method which is the single structural design to higher grade optimum design which is multi-structural designs. A series of calculations of each retaining structures were listed in the appendixes. Through the analysis of these calculations, the results of optimal designs of these three retaining structures was concluded which can be take as references to designers of actual projects.