Nonlinear distribution of seismic active earth pressure on rigid retaining walls

rigid retaining walls;  seismic coefficients;  active earth pressure;  point of action;  Distribution

Based on the Mononobe-Okabe hypothesis, the horizontal layer analysis method is used to establish the first-order differential equation of the active earth pressure intensity under the translational mode of the rigid retaining wall under seismic loading, and the nonlinear distribution solution is obtained. The resulting resultant force formula is exactly the same as the Mononobe-Okabe formula. The analysis results show that the seismic coefficient has a great influence on the distribution of earth pressure intensity. In addition, by discussing the influence of the internal friction angle of the fill, the friction angle of the wall back and the seismic coefficient on the height of the active earth pressure resultant action point, it is considered that the Mononobe-Okabe theory is dangerous for the overturning stability of rigid retaining walls in translation mode.