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Analysis on Passive Earth Pressure for Retaining Walls Considering Soil Arching

WANG Li-guo1,WANG Zhi-kai2(1.Hangzhou Solid Waste Treatment Co.,Ltd.,Hangzhou,Zhejiang 310011,China;2.Institute of Geotechnical Engineering,Zhejiang University,Hangzhou,Zhejiang 310058,China)  
Based on Coulomb's earth pressure theory,assuming the trace of the major principal stress arching as a parabola,and considering arch effects,the theory formula is obtained including the lateral coefficient of passive earth pressures.And by using the coefficient in the method of horizontal differential element to analyse the stess conditions of soil on passive limiting equilibrium,the theoretical formulae for unit earth pressures,the resultant earth pressures and the application points of the resultant earth preesures on translation mode are obtained.On this basis,the effects of the internal friction angle and wall friction angle on the lateral coefficients of earth pressures,the unit earth pressures,and the application points of the resultant forces are investigated and analyzed.The method presented here is compared with the exiting methods and some experimental data,verifying the rationality of the method.
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