Analysis Of Mechanical Properties On Double Pile-Anchor Supporting Structure

Double pile-anchor structure is a new type of form produced in recent years with deep foundation . It composed of double piles and anchor. It is a large lateral stiffness of statically indeterminate structure, which can control the deformation effectively, and has good economic results. However, as the theory of mechanical property research and testing on double piles-anchor structure is still relatively lacking. We need do further analysis on its theoretical, and come up with more reasonable model to guide the construction of deep foundation.This paper describes the theory of the pile-anchor system and double piles. Assuming front row pile is under the level of concentrated force, which is simulated with double-row piles-anchor structure of the anchorage force based on the existing double-row-piles-portal frame calculation model.The paper established a portal frame calculation model under horizontal force. Connecting beams established the links between the front-pile and back-pile by the the force passing to the front-pile and back-pile.It simplifies indeterminate portal frame structure, and calculates the reaction anchor using the equivalent beam method . It obtains soil pressure of the front-pile and back-pile by the classical earth pressure theory. It puts forward the double pile theory-Anchor structure calculation methods. Finally, it obtaines the internal force and displacement map of double pile - anchor structure by finite element software simulations and actual testing data. Compaired the measured results and theoretical calculation results of double pile-anchor of the internal forces and displacements. It verifies the correctness of the analysis of foregoing theoretical, provides some reference value on the double pile-anchor design and construction.