位移对刚性挡土墙被动土压力分布的影响_王仕传.pdfVIP

第18 卷第3 期 安徽建筑工业学院学报( 自然科学版) Vol. 18 No . 3 2010 年6 月 Journal of Anhui Inst itute of Architecture Industry Jun. 2010 王仕传, 程 桦 ( , 230601) : , , , , , ; , , : ; ; ; :TU432 : A :2010) 0300504 Influence of di splacement on di stributi on of passi ve earth pressure of rigid retaini ng wall WANG Shichuan, CHENG Hua ( Department of Civil Engineering, Anhui Institute of Architecture Industry, Hefei 230601, China) Abstract: Based on Coulomb passive earth pressure theory and Dubrova s method of redistribution of pressure, a modified passive earth pressure method is presented. Such method can reflect the influence of the mode of rotation and w all displacement, and the mobilization of shearing resistance in the back fill as affected by the w all movement is considered in a simplified manner, w hich is associated w ith the distribution of earth pressure. The analysis show s that as the displacement of w all top increases, the zone of limit equilibrium condition of backfill after the w all increases progressively, and the earth pressure increases accordingly. When the displacement of w all top is large enough, Coulomb s passive limit equilibrium condition can be attainned, and the earth pressure is equal to Coulomb s passive earth pressure. Key words: retaining w all; passive earth pressure; displacement; mode of rotation [ 2~ 6] [ 7] , [ 1]