Titreşimli makineler altında temelin dinamik tepkileri

In the field of civil engineering design, the dynamic response of foundations under vibrating machines is a critical aspect, as well as for structures subjected to dynamic loads. By focusing on analysis methods, influencing factors, and mitigation measures, we will conduct a study aimed at providing a comprehensive overview of the dynamic response of foundations under vibrating machines. The study begins with defining and understanding the dynamic response of foundations under vibrating machines in civil engineering and the specific challenges posed by vibrating machines. It then discusses the types of vibrating machines commonly encountered in civil engineering projects and the dynamic loads they generate. Research on case studies and examples are presented to illustrate real-world applications of the concepts. The analysis methods for studying the dynamic response of foundations are explored, including analytical and numerical techniques such as finite element analysis and dynamic soil-structure interaction analysis using PLAXIS 2D software. The purpose of this study would be to simulate the dynamic interactions between the structure and the underlying ground. It allows studying the impact of a vibrating source on the surrounding ground. The oscillations produced by the generator are transmitted into the basement through the sole. Factors influencing dynamic response, such as soil properties (we have opted for materials such as clay and sand), foundation geometry, and machine characteristics, are also discussed in detail. After designing the reference model and obtaining the results from the software, different soil materials, as well as different values for frequency and amplitude, are introduced. These new datasets added are aimed at in-depth analysis and comparison of the curves resulting from these data according to the differences in soil materials used. Thus, these new data are calculated and represented in a line chart on EXCEL software. We have two types of graphs for each point: vertical displacements Uy, horizontal accelerations Ax. For each graph, the dynamic time element is placed on the horizontal axis, and on the vertical axis, we have vertical displacements and vertical or horizontal accelerations. For each material, the amplitude and frequency values are progressively permuted to perform the calculations for a comprehensive comparative analysis. Depending on each material, a theoretical analysis will be conducted taking into account the physical properties of the materials and the results obtained from the graphs to verify the consistency of the results obtained in the calculations and modeling. The effect of applying a load to the surface of clay and sand varies depending on the mechanical properties of these materials. Clay has a higher propensity to deform under load due to its high cohesion, while sand tends to flow or compact. The choice of material will depend on the specific application and load requirements.