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Rigid piles in landslide Engineering to GreatWall Mine

Abstract : The technique of rigidity stabilizing piles with pre-stressed anchor cables is an effective measure in landslides remediation works, Comparing to stabilizing piles, they make the state of the forces on piles more reasonable. In this paper the mechanical and mathematical model of piles with pre-stressed anchor cables have been set up, which es-tablishes the foundation of the calculation for the structure design of the system.The analytical and numerical solutions of the established mathematical model have been achieved. In the whole paper, two-parameter method is employed to calculate the coefficient of subgrade reaction or subgrade modulus. The anchor cable will be regarded as an elastic hinge. Under the consideration of deformation harmony of anchor cable with piles bodies and pile bottom conditions, the solutions of the internal forces distribution along piles bodies are presented.

Keywords   Rigid Stabilizing Piles; Pre-stressed anchored Cables; design

Introduction  The design and calculation of the rigidity Stabilizing Piles with Prestressed anchored Cables include an-chored Cables stretching force and Stabilizing Piles internal force. Up the slip plane can be calculate as determi-nate structure ,at the same time down the plane can be calculate as elastic grade beam model. The local force to the rigidity Stabilizing Piles can be achieved after analysis the landslide of use “transfer factor” calculating method. The anchor cable will be regarded as an elastic hinge under the consideration of deformation harmony of anchor cable with piles bodies.In this paper double-parameter method is employed to calculate the coefficient of subgrade reaction or subgrade modulus from GUI Shu-Xiang.

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Conclusions The depth of the piles embedded in the slide bed is relatively small, whereas the dimensions of the pile body are relatively large. What initial situation is better not easy to determine. In applications, should having taken technological and economical factors into sufficient considerations. Various distribution models of the coefficient of subgrade reaction can be considered after the two-parameter method is employed. The commonly used "K" method, "m" method. Thus, the solutions of the internal force along the studied stabilizing piles have more typi-cality.In applications, the structure of stabilizing piles with pre-stressed anchor cables can be associated with re-taining wall, combined bolting and shotcrete, precast concrete lagging (plain, troughlike, archlike shapes), and so on.To prevent anchor cables from erosion is vital to make sure the studied structure to work properly in a long time. When multi-row anchor cables are installed, General speaking, the prestress values of the lower anchor ca-bles rows should be larger than that of the upper rows. Then, under working condition, the stress level of all an-chor cables will be approximately identical to some extend.

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Hi all, I'm a Geotechnical Engineer (Class 1 RSE, Senior engineer of Civil 2007 before) that aims to develop economical solutions to technical problems. Also link between scientific discoveries and the commercial applications that meet societal and consumer needs.
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