The Research Of Pile Soil Interaction Research In Layered Soil

Pile foundation has the advantages of high bearing capacity, small andwell-distributed settlement, good seismic performance and high tensile ability. What’smore, it can well adapt to a variety of geological conditions and meet the differentrequirements of various buildings easily. Because of these advantages, Pile foundationis widely used in civil engineering, such as high-rise buildings, bridges, largefactories and so on. Pile-soil interaction belongs to the problem of different mediacontact in solid mechanics. When the distance between piles is small, pressures belowthe bottom of adjacent piles will partially overlap, what led to significantly increasingground bearing pressure, enlarging its sphere faction and depth. At this point, thesingle pile not only resists load of pile itself, but also resists load which pass throughthe soil from neighbor piles. Therefore, the research of pile-soil interaction has majorengineering meaning and theoretical significance.In this paper, according to the existing calculation level and the theoretical basis,and considering the natural characteristics of foundation soil synthetically, using thefollowing four technical routes to analysis the vibration characteristics of single pileand deduce new dynamic interaction factors between end-bearing piles: based on thedynamic Winkler foundation model, make use of the combination of elastic andviscous components; based on layer foundation; used the transfer matrix method andLaplace’s transformation. Laplace’s transformation can transform differentialequation to algebraic equations. At the same time, high precision tool box was used toanalysis examples with the above method in paper, This method is easy and thecalculated results are consistent with existing results. What’s more, it can give acontinuous solution. So this method has certain significance to pile-soil dynamicinteraction research.