Frame-Type Levees Anti-Slide Pile Internal Force Calculation And Design Method

In recent years, due to frame-type levees have advantages of less floor space required, suitable for old dike reinforcement heightening, levee project and river bank slope, complex geological conditions, and comprehensive utilization conditions are good, etc, a large number of applications in Guangxi. This structure made up of the retaining structure of the upper frame and lower part of the pile foundation structure, which can be used as both pile foundation of the upper structures and reinforced embankment slope anti-slide pile. Relative to the ordinary anti-slide pile, frame-type anti-slide pile affected by the influence of water level changes, larger displacement of top pile, has the particularity characteristics of active pile and passive pile. At present, in practical projects, the design of pile frame-type levees without special specification, it has too much simplified assumption, the parameter selection of arbitrary, reliance on the engineering experience, would cause security hidden danger or waste. Therefore, carry out the study of frame-type internal force calculation and flood anti-slide pile design method has the important practical significance and scientific research value.According to the particularity of the frame-type anti-slide pile, we use GEOSTUIDO software to simulate the impact of water level changes on the the levees bank slope seepage field and the safety factor, determine the frame levees anti-slide pile control the calculation condition and load combinations, established consider anti-slide pile-soil interaction in the mechanical response of anti-slide pile equations of mathematical physics, proposed the frame-type anti-slide pile internal force calcualtion of p-y curve method and the "K" the combination of methods, on this basis, the establishment of a frame-type levees anti-slide pile of internal force calculation model. The research shows that the calculation model is feasible, it takes into account both the nonlinear large deformation of the soil and pile, provide an effective means to calculate a reasonable solution to the problem frame type anti-slide pile internal force. Traditional pile group effect analysis method can not consider nonlinear deformation of the soil and not a true reflection of the uneven load distribution, this paper will translate the pile group load distribution coefficient into solving multidimensional nonlinear optimization problems, and then the use of artificial bee colony optimization algorithm to solve, thus proposed the group pile top load distribution coefficients calculation method based on artificial bee colony optimization algorithm, and uses the p-y curve reduction to calculation pile groups internal force. The example show that the method of frame-type levees anti-slide group pile internal force analysis with good applicability.To improve the practicability of the method of calculation in this article, ActiveX technology can achieve the VB integrated development platform on the call to the MATLAB program, compiled the frame-type levees anti-slide pile internal force calculated visual interface program.Finally, this paper discusses the design of frame-type levees anti-slide pile standards and design parameters, combined with the existing design procedures and specifications, preliminary proposed frame-type levees anti-slide pile design method and its main implementation steps, and provides an effective way for the rational design of frame-type levees anti-slide pile.