考虑时空效应的杭州软黏土超深基坑地表沉降分析方法

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熊一帆, 应宏伟, 张金红, 程康, 李冰河

Analysis Method for Ground Settlement Induced by Ultra-Deep Excavation in Hangzhou Soft Clay Considering Time-Space Effect

XIONG Yifan, YING Hongwei, ZHANG Jinhong, CHENG Kang, LI Binghe

表2 土体计算参数

Tab.2 Soil calculation parameters

本构模型	土层	l/m	γ/(kN·m^-3)	c'/kPa	φ'/(°)	λ^*	κ^*	μ^*
SSC	②软黏土	20.4	17.8	5	25	0.06	0.006	0.002 5
						$E_{50}^{r e f}$ /MPa	$E_{o e d}^{r e f}$ /MPa	$E_{u r}^{r e f}$ /MPa	$G_{0}^{r e f}$ /MPa	γ_0.7	m
HS-Small	①填土	6.5	17.0	5	28	4.5	3.8	22.7	79.4	0.000 2	0.80
	③粉质黏土	13.5	19.3	25	30	6.5	5.4	32.4	113.4	0.000 2	0.80
	加固土	23.7	19.3	60	25	15.0	15.0	85.0	170.0	0.002 0	0.12
						E/MPa	υ
MC	④圆砾	2.2	19.0	1	18	36	0.30
	⑤强风化砂岩	6.9	21.0	30	20	90	0.25
	⑥中风化砂岩	20.5	22.0	50	30	3 600	0.25