The Study About The Regularity Of Pile-Soil-Pile Interaction

The interaction between piles and soil widely exists in engineering practice. The research of pile soil-pile interaction is popularly paid close attention to by academic and engineering circles, including bearing capacity of single pile, the pile friction and the pile-pile interaction coefficient rule. This paper discussed these issues in depth based on the numerical method.Firstly, this paper introduced simply the basic principle of contact finite elements method and the derivation procedure of basic finite elements equation of penalty method. Based on software ABAQUS, this paper elaborated some key problems that must be solved during the contact analysis of pile-soil, such as the method to simulate initial crustal stress field and the selection of physical parameter in the contact analysis.Secondly, this paper used the software ABAQUS to simulate the series of pile-pile interaction model experiment, and made the comparison between results of numerical simulation with tested results of the experiment. It demonstrates that the pile-soil-pile interaction numerical model built with software ABAQUS is reasonable.Finally, the pile-soil interaction and pile-soil-pile interaction was researched by using software ABAQUS. The basic change law of P-S curve on single pile, vertical displacement, vertical stress, frictional resistance and the rules of pile-pile interaction coefficient with pile spacing, pile length, pile diameter, pile elastic modulus were obtaiad. So some regularity conclusions of pile-soil-pile interaction can be drew from these studies.