非对称超载对地铁深基坑的支撑不动点调整系数影响

林舒琦,范晓真,徐长节,方焘

Impact of asymmetric overload on fixed-point adjustment coefficient of strut in deep metro excavation

Shuqi LIN,Xiaozhen FAN,Changjie XU,Tao FANG

表 4 基坑支撑不动点调整系数的计算值与实测值对比

Tab.4 Comparison between calculated value and measured value of fixed-point adjustment coefficient of excavation support

基坑 h h/H Δl_m Δs_m λl_m λl_c Δλl ξl/% λs_m λs_c Δλs ξs/% 基坑1 10.0 0.381 52.9 6.4 0.892 0.927 0.035 3.78 0.108 0.073 0.035 47.95 13.0 0.496 56.9 12.5 0.820 0.848 0.028 3.30 0.180 0.152 0.028 18.42 16.5 0.629 59.4 17.3 0.774 0.780 0.006 0.77 0.226 0.220 0.006 2.73 19.5 0.744 58.4 19.0 0.755 0.743 0.012 1.61 0.245 0.257 0.012 4.67 22.9 0.873 47.5 14.3 0.769 0.726 0.043 5.92 0.231 0.274 0.043 15.70 基坑2 5.0 0.556 17.4 3.6 0.875 0.829 0.0460 5.55 0.125 0.171 0.0460 26.90