Analysis And Calculation Of The Internal Forces Of Retaining Structure With Double-row Anti-sliding Piles

Along with the large-scale development and construction of the infrastructure,particularly, the slope reinforcement project and the build of foundation project,Double-row anti-sliding piles have been widely applied to civil engineering practice.In recent years, the rapid development of transport infrastructure and the increasing ofurban high-rise buildings demanded more and more Double-row anti-sliding piles tobe applied. As one of a simple and common reinforcement structure, Double-rowanti-sliding piles have been repeatedly used in practice. Because of the complexityand difference of the soil pile, the calculation method of Double-row anti-sliding pilesis not perfect. So the theory of internal force calculation in civil engineering isnecessary to be further study.On the basis of previous research, the author made some new assumptions, andthen analyzed the internal force of Double-row anti-sliding piles and soil around thepiles. Through studying the force mechanism of soil and piles, the author deduced thetheoretical formula of Double-row anti-sliding piles.In this program, the author summarized the prospect and development of thestatus quo of double-row anti-sliding piles. Firstly the author analyzed the landslidethrust in the surrounding of piles and drew different landslide thrust formula ondifferent slip forms. In order to improve the theory about the landslide stabilitycalculation method, some new approaches had been proposed. Making use of theslope stability calculation, this thesis calculated the landslide thrust pushing on piles,and then improved the results about the landslide thrust researched by previous.Ultimately, the landslide thrust was more in line with the engineering practice becauseof the changing assumptions. When anti-slide was set on slope engineering,reasonable size of landslide thrust was also discussed in this thesis.This program had given a new model for Double-row anti-sliding piles. On theabove surface of slide, the piles were considered as cantilever piles in this model,however below the sliding surface the soil foundation was a Winkle foundation beamon elastic foundation. On the basic of some simplified process, this programcalculated the displacement about reference point setting on pile and soil. Accordingto the displacement of reference point and the pile displacement boundary condition,the internal force of Double-row anti-sliding piles could be calculated by structuralmechanics method. The complete analysis of calculation process had been compiled into a computer language program which would be available for practical application.Through a lot of examples, the supporting effect of the Double-row anti-slidingpiles was analyzed. At the end of this thesis, main factors and parameters wereevaluated. The main contents of caculation and acquired results pick up from thisthesis as follows:①the law of internal force changing with the excavation depthswere analyzed②the law of internal force changing with the pile spacing wereanalyzed③the law of internal force changing with parameters of foundation modelwere analyzed.