Buried Rock-socketed Piles On The Slope Stability Analysis Of Pile Groups

First of all this text summarized the methods of theories analysis of rock-socketed piles, descripted several factors to affect the capacity of rock-socketed piles under vertical load. Following the rock-socketed piles of the No.3 high stove in PANGANG as the research objects, in virtue of the finite element analysis software ANSYS8.0, it carried through the finite element numerical simulation research related to rock-socketed piles stability on the bury slope.It gained through calculation: under the function of rock-socketed loads, all piles beds caused hemisphere bundle of vertical stress. Basically they are axis symmetry, and they won't be affected by heave status of terrane. Compared the radius of hemispheres and piles, they are correspond or less than the radius of piles. Bundles of vertical stress are isolated each other and not syncretic one another under vary piles. But it will gradually reduce along with the increasing of the depth of rock-socketed; It caused concentrated areas of shear stress that ring shaped. The areas distributed primarily under the piles feet, and they are axis symmetry almostly. Because all piles tumbled in terrane some depth, the configuration on the surface of terrane had a little influence to the shaped of concentrated areas of shear stress. But it would be affected notability by the depth of rock-socketed. And the concentrated areas would gradually desalt along with the increase of the depth of rock-socketed. The concentrated areas of shear stress are isolated each other and not effected one another; The terrane vertical deformation caused by piles load what will be divided to total layer deformation and local sphere deformation controlled by single pile. The layer of total deformation was notability. Each layer of displacement assumed horizontal state basically, and the displacement value of which reduced gradually from ascend to down. Local deformation assumed hemispheres which was distributed under piles. The vertical deformation of ground layer and piles assumed layers, and it had slope status paralleling with terrane top continuous line. The displacement value of which reduced gradually from ascend to down; Side-aspect deformation mostly manifested whole layer deformation which caused by piles load. Local deformation under piles was very faintness. It indicated that piles load under piles and in sight of it would aroused vertical deformation mostly. And the possibility of Side-aspect slippage breakage of terrane was very small. Insum, when piles tumbled in terrane some depth, terrane surface sloping shape would not affected the stability of piles.In the end the text compared the result of resolve with the result of numerical simulation, gained many beneficial conclusion: Compared with the bearing capacity and settlement of single pile under piles domino effect with a pile, they have great difference. Each single pile datum was only referenced for piles design under piles effect; Base resistance reduced gradually along with the increasing of terrane depth. If make the exert of the base resistance, it would be must chosen the value of terrane depth reasonable; It is practical and feasible to use the software of ANSYS simulating the rock-socketed piles stability on the bury slope. The research of this paper are vital to promote theoretical research and to guide actual production of rock-socketed piles.