内隔墙长度对抽水引发基坑围挡侧移的影响

曾超峰,廖欢,李淼坤,薛秀丽,梅国雄

Effect of buttress wall length on retaining wall deflection induced by dewatering

Chao-feng ZENG,Huan LIAO,Miao-kun LI,Xiu-li XUE,Guo-xiong MEI

表 1 土层分布及物理力学参数

Tab.1 Soil distribution and mechanical parameters of soil layers

土性 H/m γ/(kN·m−3) ω /% e N ES /MPa c'/ kPa φ'/(°) K0/(m·d−1) 粉质黏土 5.5 19.35 29.90 0.811 4.4 4.00 18 20 0.49 黏质粉土 11 19.30 26.50 0.792 11.2 8.26 15 26 0.43 粉质黏土 19 20.10 26.40 0.696 7.5 5.80 20 21 0.50 砂质粉土 24 20.15 21.90 0.640 22.4 8.71 16 27 0.42 黏土 27 19.75 30.40 0.764 16.1 5.98 25 15 0.55 砂质粉土 33 20.65 20.20 0.583 26.7 8.29 14 27 0.35 粉质黏土 37 20.50 22.40 0.611 16.0 7.26 24 19 0.39 粉砂 42 20.50 18.20 0.585 49.3 10.50 8 37 0.30 粉质黏土 50 19.30 23.80 0.864 − 6.20 17 23 0.39