刚性挡土墙平动模式下中间被动土压力计算_徐日庆.pdf

44 10 浙 江 大 学 学 报() Vol.44 No. 10 2010 10 Journal of Zhejiang University ( Engineering Science) ct. 2010 D I: 10.3785/j.issn. 1008973X.2010. 10.027 徐日庆, 李昕睿, 朱剑锋 ( , 310058) : ,. ,, . , , . , ,. , , . :; ; ; ; : TU 432 : A : 1008973X( 2010) Calculation of intermediate passive earth pressure against rigid retaining wall with translation mode XU Riqing, LI Xinrui, ZHU Jianfeng (K ey Labor atory of S of t Soils and Geoenv ir onmental Eng ineer ing , M inis try of Education, Zhej iang Univ ersity , H ang hou 310058, China) Abstract: T he calculation of earth pressure with nonlimit displacement was studied in order to accurately design retaining wall. Passive earth pressure under the nonlimit statewas defined as intermediate passive earth pressure. T he failure mechanism of soil was analyzed, and the relationship between the friction angles and the wall movement was obtained. T he Coulomb theory was improved. T he theoretical formulas of intermediate passive earth pressure intensity, resultant force and coefficient with translation mode of retaining wall were derived according to the conditions of static equilibrium. Model tests which fillings were dry sand or saturated sand were both analyzed. T he calculated values accorded with the measured data. Intermediate passive earth pressure and coefficient simultaneously increase with the displacement increases in translation mode. The distribution of intermediate passive earth pressure is almost linear along the wall. Key words: rigid retaining wall; translation mode; intermediate passive earth pressure; dry sand; saturated sand ., ,, , . ., , , ,