路基路面工程课程设计.doc

土墙的抗倾覆稳定性较容易满足,墙身断面尺寸主要由抗滑稳定性和基底承载力来控制,故选择基底倾斜??8 0?(1)计算墙身重 G及力臂??(取墙长 1m计) b1=5m B=6.16m 3/ 23m KN a?? 1 0 1 0 0 ( ( )) [ ( ) ( ( )) ( ) 2 ( ) ] 1 2 2 6.16 (5 8.8 0.250) [ (8.8 6.16 8 ) (5 8.8 0.250) (8.8 6.16 8 ) 2 8.8 8.8 0.25 6.16 6.16 8 ] 23 2 2 13.330 22.216 9 aa B b Htg G A H Btg b Htg H Btg B Btg H H tg tg tg tg ?? ????? ?? ??? ? ?????????? ?????? ??? ???????????? ? ???? ? ?? ??( .680 2.666 23 1101.516 KN ? ??) 由力矩平衡原理: ?? a GBA Htg BA Htg b Htg bBA Htg bBAG????????????????????????????]3 23 )(( )2 )( ))(((3 ))((2[ 43 112 11 ( 其中: )(2 ))(( 0 11?? Btg H Htg bBA??????,