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《Journal of Zhejiang University(Engineering Science)》 2007-01
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New method for calculation of water-earth pressure on foundation pit considering ground water seepage

LUO Yong,GONG Xiao-nan,WU Rui-qian(Institute of Geotechnical Engineering,Zhejiang University,Hangzhou 310027,China)  
Nonconsideration of groundwater seepage is one of the main reasons why measured values of water-earth pressure on supporting structures are generally very different from those calculated with classic earth pressure theories.Mechanical effects of groundwater seepage on earth pressure were studied and the viscous drag force and seepage force were considered together.By setting up differential coefficient equations and constructing a set of entire new calculation expressions on the foundation pit were presented with consideration of groundwater seepage.It was proved that the viscous drag force and the water pressure around the earth are in equilibrium with the water weight.The results calculated with the new expressions were very close to the measured water-earth pressure values.This calculation method is universally applicable to excavation engineering and the stability analysis of earth slopes.
【CateGory Index】: TU432
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