Distribution of Seismic Active Earth Pressure of Retaining Wallin Translation Mode Considering Soil Arching
Based on Mononobe-Okabe theory,considering arch effect and assuming that soil arching was in the form of circle,after analyzing the stress of the filling behind retaining wall,the equation of soil arching was obtained,as well as the lateral earth pressure coefficient and a theory formula which is to calculate the relationship between the average shear stress and the average vertical stress on the horizontal differential elements.By using the method of horizontal differential element,an improved formula of the distribution of seismic active earth pressure resultant force and its points of application were obtained.The proposed method was compared with the existing methods and experimental data.It shows that the resultant seismic earth pressure is the same as that given by Mononobe-Okabe theory.The distribution of seismic earth pressure is non-linear.With the increase of seismic coefficient,soil arch shape changes,the coefficients of lateral earth pressure also increases.Compared with the existing theory,the heig-hts of points of application of the resultant force of proposed method are in consistence with the results of model test.
soil archingretaining wallseismic active earth pressureshear stress
NETL
NSTL
万方数据
维普
