Study On Synergy Mechanism Of Retaining Structure With Double-row Piles

Retaining structure with double-row piles is widely used in engineering.It has the characteristics of large supporting depth,small occupation area and simple construction.But its mechanism and design theory are not perfect.In order to study the synergy mechanism of retaining structure with double-row piles and analyze the main influencing factors,this article through theoretical analysis,model test and numerical study.The main content of this dissertation include the following three aspects:(1)The common structural forms and deformation characteristics of retaining structure with double-row piles are analyzed,and typical mechanical model and calculation method are compared.(2)The displacement of pile head and the strain of pile are tested through 4 group model test of retaining structure with double-row piles.In order to study which kind of retaining structure with double-row piles rationality and reduce the influence of the structure by the rear pile length,two kinds of combination of length of the double row pile model were studied;through comparative analysis of 4 different row spacing,discusses the influence of row spacing on length of retaining structure with double-row piles of synergy and the synergistic effect of the optimal structure of row spacing.(3)Based on of experiments,the establishment of three-dimensional finite element model to simulate retaining structure with double-row piles,selects four kinds of mainfactors,namely,pile length,spacing,spacing and coupling beam stiffness to analyze the influence mechanism of various factors on the structure.