地面堆载对既有隧道影响离心试验和数值分析

刘谨豪, 严远忠, 张琪, 卞荣, 贺雷, 叶冠林

Centrifugal Test and Numerical Analysis of Impact of Surface Surcharge on Existing Tunnels

LIU Jinhao, YAN Yuanzhong, ZHANG Qi, BIAN Rong, HE Lei, YE Guanlin

表1 本构模型参数

Tab.1 Parameters of constitutive model

地层	c/kPa	ϕ/(°)	$E_{o e d}^{r e f}$ /MPa	$E_{50}^{r e f}$ /MPa	$E_{u r}^{r e f}$ /MPa	G₀/MPa	γ_0.7×10⁴	ψ/(°)	p^ref/kPa	R_f	K₀	m	ν_ur
4-1	10	25	2.15	2.58	14.5	27.0	2.7	0	100	0.7	0.57	1	0.3