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在房屋建筑基础设计中，对钢筋砼薄板基础没有具体的设计计算规范。因而在设计中大多采用倒置梁法来计算。这一方法虽然简单，但有明显的不足，即所求得纵向弯矩误差较大；又无法得到板横向的内力值，所以板沿横向的配筋仅靠经验而定，既不准确，又不经济。本文视地基基础板为Ｗｉｎｋｌｅｒ地基上弹性薄板，利用有限差分法求解弹性薄板的内力，不但可求得沿板纵方向的内力值，同时，还求得了沿板横向的内力值，为合理配筋设计提供了理论依据和新的设计计算方法。
In the basic design of building construction, there is no specific design and calculation specification for the reinforced concrete sheet foundation. Therefore, the inverted beam method is often used for calculation in the design. Although this method is simple, it has obvious deficiencies. That is, the longitudinal bending moment error obtained is large; and the lateral internal force value of the plate cannot be obtained. Therefore, the reinforcement along the transverse direction of the plate depends only on experience and is not accurate. Uneconomical. In this paper, the ground foundation slab is an elastic thin slab on the Winkler foundation. The finite difference method is used to solve the internal force of the elastic slab. Not only the internal force along the longitudinal direction of the slab can be obtained, but also the internal force along the transverse direction of the slab is obtained, which is a reasonable reinforcement. The design provides a theoretical basis and a new design calculation method.