The Interaction Analysis Of Raft And Gibson Foundation

In practical engineering of complex geological conditions prevailing,therefore the upper structure,foundation,and land base is a restricting community,which is a supplement to the general simplified Foundation.It plays an important theoretical significance in the process of solving practical engineering problems.According to previous literature and research information about the Gibson Foundation,objectives of this paper established motion equations of Finite Element system and the Gibson Foundation model.Jia Dian using the approximate distribution of foundation contrast analysis model of Gibson Foundation.then,above that finite element analysis and dynamic infinite element coupling with model of near-field and far-field,structure and Gibson foundation interact each other.The results confirmed the convergence and accuracy of the model is good.Providing further reference model considers the structure and land-based mutually influence.At the same time,system interacted to seismic issues find some design basis in the actual project.The upper structure on the Gibson Foundation response to the great change along with certain factors of great differences,so the actual project should be given importance.Other factors in the same situation,different types of Gibson foundation on the dynamic response of the structure show a greater impact.so that it is necessity to consider different soil media amplifying effect of seismic action in the earthquake.the bottom expand settling of basis along with basis plate thickness decreasing.However,the magnitude of the difference is not large,that affect the superstructure to a limited extent.Upper-structure stiffness of itself change will only affect the sensitivity of the seismic response by its own,while the foundation has not be changed.Adopt infiniteelement method to simulate the propagation of seismic waves in the far field and the results is convergence,the model is stable.There has been no wave diffraction and scattering problems.To take advantage of Jia Dian can precisely simulate soil distribution.especially very large amount of calculation and optimization of three-dimensional model,it has important reference value.