How A Study of Soil Dynamic Properties on the Stability of Building Structures in Foundation and Foundation Engineering

In the context of the increasingly widespread application of high-rise buildings, the selection of foundation base forms with appropriate materials is of great practical significance. The article takes the student teaching building of a college in city A as an example, with the help of the eigenvalue buckling analysis method provided by ANSYS, the three-dimensional finite element model is used to analyze the foundation pit building support structure from the soil moisture content, seismic action and the influence of different clay soil quality. Meanwhile, the feasibility of adopting foundation for buildings with clay1 as the main holding layer is verified from both energetic and dynamic aspects. After the foundation pit building construction, the lateral displacement is overall small, and the maximum lateral displacement is controlled within 4mm. With the increase of soil moisture content, the lateral displacement of the supporting structure gradually increased, and when the moisture content increased to 7 ml and 8 ml, the cumulative values of lateral displacement were 4.4 mm and 5.5 mm, which increased by 1.2 mm and 2.3 mm, respectively, with an increase of 37.50% and 71.88%, which indicated that the building construction should avoid the effect of the rainy season on the soil moisture content. With the analysis under the coaction model, the results show that the rate of foundation soil subsidence is increasing with the increase of floor loading. Under the analysis of the effects of different earthquake levels on different soil qualities, the interlayer displacement of clay 1 under 8 ∘ multiple and 8 ∘ rare earthquakes meets the requirements, so clay 1 meets the feasibility of building foundation engineering.