Design Theory of Retaining Wall Based on Limit Equilibrium Method
In this paper,the quasi-static limit equilibrium design of embedded retaining wall is carried out.The Blum method is used to calculate the internal force and critical acceleration under dynamic conditions.The main defects of this method are discussed,and a new limit equilibrium method is proposed based on the results of real dynamic two-dimensional finite difference analysis.The results show that the pseudo-static prediction method is in good agreement with the real two-dimensional finite difference analysis method and the results of related literature in the distribution of horizontal contact stress and bending moment.As the strength of soil-wall system increases,the critical acceleration and the maximum bending moment of soil-wall system increase.The greater the strength of the soil-wall system,the smaller the displacement in the vibration,but this goal needs to increase the internal force of the wall.The Blum meth-od provides a reliable estimate of the maximum internal force of the wall only for moderate earthquakes,and signifi-cantly underestimates the critical acceleration and the corresponding maximum bending moment.On the contrary,the method presented in this paper agrees well with the numerical data and always gives a conservative estimate of the max-imum bending moment value.
万方数据
维普
