Study On The Analysis And Calculation Of The Stress In The Stabilizing Pile

Anti-slide piles which are an effective measure for treating the landslide play an important position in treating the landslide in all countries of the world. The present statistics show that Anti-slide piles are the most extensive method to treat landslide in engineering structures. At present, the landslide has many plane of slidings like large-scale colluvial landside , affecting the internal force of anti-slippery pile , uses landslide thrust force computation by no means considering the mutual action between the different depth place glide surface layer. In the improvement process of landslide disaster ,the landslide thrust force is correspondingly took the most dangerous plane of slidings basis of calculation by the deepest plane of slidings. The design of thrust force regarding the entire slope as the entire thrust force by this deepest plane of slidings takes the design value,only giving a design load factor to the improvement landside mass. In the usual situation, this is feasible and the result is conservative and safety. However, the kind of improvement method of landslide disaster makes the thrust force and the internal force bigger than fact. Similarly, the common software of computing the landslide thrust force in the rated thrust process can only analysis the situation of one distributed form at present, but when we treating the slope having many planes of sliding, the consideration of many kinds of distribution form of the landslide thrust force is helpless.The prime content of this article includs following several points:(1) summarizing the methods of landslide thrust force suitting for many kinds of plane of slidings forms and the tradition endogenic force computation of anti-slippery pile body;(2) analyzing the formation mechanism of colluvial landslide including plane of slidings. Inferring the commonly used computation formula of landslide thrust force transmission method of correlates, which has been suit for computation of thrust force which affected mutually in the consideration glide level to the colluvial landslide including many plane of slidings. Considerating glide level effect mutually, the paper proposes the different design load factor with different entrusts based on the interval of the outside influence between the shallow layer slippery body and in-depth slippery body. Finally by the analysis of landslide example applying the above method, the example indicates that the shearing force and the bending moment of pile body by the method of the traditional table look-up computation and by the FLAC^2D value software computation comparing to it's shearing force and bending moment value of pile body are bigger ,because the later considering the influence of the mutual action level.Therefore, the method of considering the mutual action of the glide level analysizing the pile body endogenic force can effectively reduce them comparing to the traditional computation method ,and causes it to conform to the real strength characteristic of the anti-slippery pile. So it has also saved the improvement material amount of the landslide .(3) Establishing two-dimensional surface model of the anti-slippery pile using the FLAC^2D software suiting for geotechnical engineering value computation. Carryying on the computation of pile body endogenic force to the landslide thrust force including the different distribution forms of the entire pile, and obtainning the shearing force and the bending moment value of pile body. It explaines the traditional analysis computation value is bigger the value comparision which obtains with computation analysis of the traditional mean.