Transient Response Analysis Of Two-Dimensional Frame Structure With Damping Embedded Partially In Soil By The Method Of Reverberation-Ray Matrix

The frame structure embedded partially in soil has been widely used in civil engineering projects. Under the impact load, there are few studies on the wave response analysis of the damping two-dimensional frame structure embedded in soil and soil parameters or structure factors on the influence of the wave response of the frame structure embedded in soil. The study has guiding significance for the design and test of frame structure embedded in soil. Therefore, this paper focusing on soil parameters and the framework itself factors on the influence of the transient response of two-dimensional frame structure embedded in soil based on the method of reverberation-ray matrix.Firstly, the paper studied the influence of soil damping and material damping on the spectral relationship and dispersion relationship in pile soil system. The studies have shown that the greater the soil spring coefficient of soil side pile is, the greater the cut-off frequency in the spectral relationship, the greater the peak value of the phase velocity in the dispersion relations, the greater the corresponding frequency of the peak points.Second, the paper studied the transient wave response of damping two-dimensional frame structure embedded partially in homogeneous soil under the action of oblique shock, and analyses the influence of transient wave response of frame structure embedded in soil by material damping and damping of soil, different receiver position and different depth of embedded pile. The research shows that the greater the strain viscous damping of pile body material, the stronger the dispersion effect during the wave in the process of transmission, the greater the energy dissipation of wave.Thirdly, the paper studied the transient wave response of damping two-dimensional frame structure embedded partially in stratified soil under the oblique exciting force. The research shows that the upper soil harder, the reflected wave signal from the pile-soil interface is more intense, the lower soil harder, the reflected wave signal from the two layer soil interface is more stronger.Then, the paper studied the comparison of the transient wave response between two-dimensional damping frame structure embedded partially in soil with defects and without defects. The research shows that the reflected signal of neck-expanded damping frame structure and neck-reduced damping frame structure are reversed, the wave after the defects and reflect from the other node, amplitude will be affected, but the direction is constant.Finally, summarized the full text research work and the main achieve ments, and put forward the further research suggestions.