Analysis On The Seismic Settlement Characteristic Of The Soft Clay Foundation Of Jiangsu

A series of problems about the stability of foundations caused by the earthquakes,such as seismic settlement liquefaction etc. As in the course of liquefaction the intensity of foundations may be lost and the foundation may be totally damaged, we must attach great importance to the liquefaction. With the rapid development of the society and many more soft foundation problems, people now pay more attention to the seismic settlement of soft clay.Saturated clay has several typical characteristics, such as high sensitivity, high compressibility, low permeation, thus the study about the seismic settlement of the soft clay is complicated, and the analysis of the seismic settlement mechanism is still disputed. There are some deference about the facet of the application of the disciplinary of the seismic settlement, so the study is meaningful both in theory and in practice.The paper gives the qualitative analysis of the seismic settlement mechanism of the soft clay from the difference of the stir shear test and the unilateralism compress test. The paper explains the causation of the seismic settlement of the soft foundation. Quantitative analysis is given to the softening domino effect in this paper. The existing softening model is analyzed. The softening model acted in the circle load about saturated clay in YanCheng and TaiChang is put forward according to the result of test. And the correlation coefficient is given.The study of the room experiments includes the experiments of physics mechanics character, the degree of delicacy, triaxis, stir shear and so on. The result of the experiments can supply some basis of the analysis of the seismic settlement mechanism as well as the parameter which is the basis of the calculation of the FEM.The seismic settlement of the crude or the structure foundation can be gained by the calculation of the FEM in different earthquake levels, and then the result of the calculation can be analyzed.Based on the analysis result, the disciplinarian of the numerical analysis of the FEM and the room experiments, and according to the requirement of the project, this paper does some attempts to the evaluation and the normative classification.