scholarly journals Effects of Principal Stress Axis Rotation on Unsaturated Rail Track Foundation Deterioration

2016 ◽  
Vol 143 ◽  
pp. 252-259 ◽  
Author(s):  
Chaminda Gallage ◽  
Biyanvilage Dareeju ◽  
Manika Dhanasekar ◽  
Tatsuya Ishikawa
Keyword(s):  
Principal Stress ◽  
Stress Axis ◽  
Rail Track ◽  
Axis Rotation

scholarly journals Effects of principal stress axis rotation on cyclic deformation characteristics of rail track subgrade materials

2017 ◽  
Vol 57 (3) ◽  
pp. 423-438 ◽  
Author(s):  
Biyanvilage Dareeju ◽  
Chaminda Gallage ◽  
Tatsuya Ishikawa ◽  
Manicka Dhanasekar
Keyword(s):  
Principal Stress ◽  
Cyclic Deformation ◽  
Stress Axis ◽  
Deformation Characteristics ◽  
Rail Track ◽  
Axis Rotation

Experimental study on the mechanical properties of water-rich mudstone under principal stress axis rotation

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Xiangdong Zhang ◽  
Xuefeng Zhang ◽  
Jiashun Liu ◽  
Kaixin Zhu ◽  
Yu Ren
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Principal Stress ◽  
Stress Axis ◽  
Axis Rotation

scholarly journals Experimental Study on Noncoaxial Characteristics of Saturated Remolded Loess

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Xuemeng Jiang ◽  
Haoshuang Niu ◽  
Wenpeng Huang ◽  
Xuwen Shang ◽  
Deng Wang
Keyword(s):  
Principal Stress ◽  
Elastic Strain ◽  
Stress Amplitude ◽  
Intermediate Principal Stress ◽  
Deviatoric Stress ◽  
Stress Axis ◽  
Cycle Number ◽  
Stress Coefficient ◽  
Practical Engineering ◽  
Axis Rotation

In practical engineering, if the influence of noncoaxial stress and strain is not considered, part of soil deformation will be ignored, resulting in the structural design which is not safe enough. A series of undrained tests was performed on remolded loess specimens using a hollow cylinder apparatus to examine the coupling between principal stress magnitude and direction in these specimens. First, the elastic parameters of remolded loess were obtained, and these parameters were used as the basis for investigating the noncoaxiality of the soil body under principal stress axis rotation (PSAR). The effects of elastic strain, intermediate principal stress coefficient, and magnitude of the deviatoric stress on the noncoaxiality of remolded loess were also investigated. The results of these experiments show that remolded loess exhibits significant noncoaxial behavior during PSAR. The noncoaxiality angle of remolded loess cyclically fluctuates with increases in the principal stress angle. It was also observed that the noncoaxiality angle will be overestimated if the effects of elastic strain are overlooked. Reversals in the direction of PSAR cause dramatic changes in the noncoaxiality angle. Increases in the intermediate principal stress coefficient are accompanied by increases in the noncoaxiality angle, up to a certain degree; however, these changes do not affect the development of the noncoaxiality angle. In coupled rotational tests with a range of deviatoric stress amplitudes, it was observed that changes in the deviatoric stress amplitude will affect the development of the noncoaxiality angle; increases in the deviatoric stress amplitude cause the noncoaxiality angle versus principle stress angle plot to shift to the left gradually, thus accelerating the trends of the noncoaxiality angle. Increases in the cycle number also increase the noncoaxiality of remolded loess.

Pavement design method in Japan with consideration of climate effect and principal stress axis rotation

2021 ◽  
pp. 100552
Author(s):  
Tianshu Lin ◽  
Tatsuya Ishikawa ◽  
Kimio Maruyama ◽  
Tetsuya Tokoro
Keyword(s):  
Principal Stress ◽  
Design Method ◽  
Pavement Design ◽  
Stress Axis ◽  
Climate Effect ◽  
Axis Rotation
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