The invention discloses a method for analyzing influences, caused by beaded-shaped
karst, on
pile foundation stressed deformation. The method comprises the following steps: A, selecting finite element numerical value
simulation software; B, establishing an axisymmetric two-dimensional geometric model according to on-site geological researches; C, carrying out grid division, selecting a constitutive model, and setting boundary conditions and material parameters; D, additionally arranging a contact unit between a
pile foundation and a stratum; E, killing a
pile foundation material unit, and simulating a stress state and settlement deformation of the stratum under the effect of gravity; F, activating the pile foundation material unit and simulating pile foundation construction; G, applying pile foundation top load and simulating the effect of external load; H, discounting an
elastic modulus of fillings in a
karst cave, and simulating a secondary consolidation settlement process of the soft fillings in the
karst cave after disturbance; and I, obtaining stressed deformation results of the stratum and the pile foundation through a post-
processing program. The method disclosed in the invention is feasible, simple and convenient to operate and efficient in calculation, has the effect of satisfying the design and construction of pile foundations in karst areas, and has great importance for the design and construction of building pile foundations in the karst areas.