https://doi.org/10.1007/s11440-025-02694-9

*论文版权归原作者和出版方所有，本文仅为学习交流。

以下是对这项成果的简要介绍：

GDS环剪仪

（1）法向应力增大强化颗粒破碎与剪缩，但增强抗液化能力；

（2）大循环幅值促使剪切初期剪缩、后期剪胀（颗粒破碎导致剪缩复现），同时充分激发剪胀特性以延缓液化；

（3）液化临界点：细颗粒含量≥30%时，首循环即发生液化，法向应力与幅值影响失效。

*图表为论文截图，版权归论文原作者和出版方所有，本文仅为学术交流。

Fig. 1 a Sand sample and schematic diagram of force chain; b Particle size distribution

Fig. 2 Configuration of GDS ring shear apparatus

Fig. 3 a, b Monotonic interface shear results under CNL: Evolution of a shear stress, and b normal displacement versus shear displacement; c, d Cyclic interface shear results of Test C1 under CNL: Evolution of c shear stress, and d normal displacement versus shear displacement

Fig. 4 Interface friction angle for soil samples with different fines content after N cycles

Fig. 5 Cyclic interface shear results of Test C2 under CNS: Evolution of a shear stress, and b normal displacement versus shear displacement

Fig. 6 Cyclic interface shear results of Test C3 under CV: Evolution of a shear stress, and b normal stress versus shear displacement

Fig. 7 Liquefaction trend at the interface in Test C3 under CV

Fig. 8 Relationship between shear stress and normal stress under different normal boundaries: a FC = 10%; b FC = 50%

Fig. 9 Change in normal displacement under CNL and CNS boundary conditions

Fig. 10 Cyclic interface shear results of Test C6 under CNL with varying initial normal stress: Evolution of a shear stress, and b normal displacement versus shear displacement

Fig. 11 Mobilized interface friction angle after N cycles under varying initial normal stress: a FC = 0%; b FC = 10%; c FC = 30%

Fig. 12 Cyclic interface shear results of Test C7 under CV with varying initial normal stress: a Evolution of shear stress versus shear displacement; b The initial cycle in Fig. 12a

Fig. 13 Liquefaction trend at the interface under varying initial normal stress: a FC = 0%; b FC = 10%; c FC = 30%

Fig. 14 Cyclic interface shear results of Test C12 under CNL with different cyclic amplitude: Evolution of a shear stress, and b normal displacement versus shear displacement

Fig. 15 Mobilized interface friction angle after N cycles with different cyclic amplitude: a FC = 0%; b FC = 10%; c FC = 30%

Fig. 16 Cyclic interface shear results of Test C13 under CV with different cyclic amplitude: a Evolution of shear stress versus shear displacement; b The initial cycle in Fig. 16a

Fig. 17 Liquefaction trend at the interface with different cyclic amplitude: a FC = 0%; b FC = 10%; c FC = 30%

Fig. 18 Evolution of normal displacement versus number of cycles: a Total normal displacement; b Cumulative and cyclic normal displacement

Fig. 19 Cyclic normal displacement relative to a Shear displacement; b Shear stress

Fig. 20 Evolution of cyclic normal displacement with different number of cycles, relative to a Shear displacement; b Shear stress

Fig. 21 Change in phase transformation stress under different initial normal stresses

Fig. 22 Evolution of cyclic normal displacement with different fines contents, relative to a Shear displacement; b Shear stress

Fig. 23 Evolution of cyclic normal displacement with different cyclic amplitude, relative to a Shear displacement; b Shear stress

Fig. 24 Degradation of interface normal stress under CNS condition

Fig. 25 Evolution of residual pore water pressure at the interface

Fig. 26 Prediction of residual pore water pressure ratio utilizing the interface liquefaction formula

GDSRSA是一个现代化的、紧凑的、桌面化的环剪系统，允许完全自动化的试验。该GDSRSA允许进行扭转环剪试验。在排水条件下，通过步进电机连续施加旋转剪切作用力直到获得恒定的残余剪切应力。在试验过程中，试样的横截面区域的剪切面不变。GDS的环状剪切仪通过GDS力作动器施加固结应力，通过计算机（用USB连接）来进行控制和数据采集，外置的荷载传感器直接测量施加到样品上的轴向和剪切应力。

通过增加选配件可实现界面剪试验。

系统特点及优势：

技术参数：