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为了更符合实际，揭示地表移动与变形对建筑物的影响，对地基与基础共同工作的公式进行推导并建立地基与基础接触而上下变形协调、相对滑动和脱离接触约束的三维有限元计算模型，从而为进一步计算内力和变形提供了理论依据。
In order to be more realistic, the influence of surface movement and deformation on buildings is revealed. The formula of the joint work of foundation and foundation is deduced and a three-dimensional finite element model is established for the coordination of upper and lower deformation, relative sliding and disengagement constraint, Which provides a theoretical basis for further calculation of internal forces and deformation.