Abstract Based on the Duncan-Chang Model, the stress-strain relation curves of collapsible loess with or without
vertical joints were obtained through triaxial compression tests. The results show that under the same confining pressure, the stress-strain curves of collapsible loess with or without vertical joints are concentrated in a narrow range;the average value curve in the narrow band obtained by normalized processing can comprehensively reflect the loess physical and mechanical properties in practical engineering; and the stress-strain relation expression for loess with vertical joints and its relative parameters are given by an average value curve. A practical engineering model suitable for Q3 loess in the Panjianhe tunnel is established which lays a solid foundation for a follow-up study of collapsible loess.
Abstract：
Based on the Duncan-Chang Model, the stress-strain relation curves of collapsible loess with or without
vertical joints were obtained through triaxial compression tests. The results show that under the same confining pressure, the stress-strain curves of collapsible loess with or without vertical joints are concentrated in a narrow range;the average value curve in the narrow band obtained by normalized processing can comprehensively reflect the loess physical and mechanical properties in practical engineering; and the stress-strain relation expression for loess with vertical joints and its relative parameters are given by an average value curve. A practical engineering model suitable for Q3 loess in the Panjianhe tunnel is established which lays a solid foundation for a follow-up study of collapsible loess.
LIU Yin- Zhang-Zhi-Qiang- Zhao-Zi-Tong- Li- Xin
.On the Constitutive Parameter Values of Collapsible Loess Based on the Duncan-Chang Model[J] MODERN TUNNELLING TECHNOLOGY, 2016,V53(6): 49-54
2016, Vol. 53 