Stress state analysis of two-way tunnel lining at different stages of soil defrostation

This paper presents a systematical numerical investigation into the lining performance of a tunnel with cavities around surrounding rocks, focusing on the influences of cavity size and multicavity distribution. The study demonstrates that the cavities around surrounding rocks have much influence on tunnel stability and may induce damages in tunnel structures, in which cavity width has a more severe effect on the stress state of tunnel structures than cavity depth. Moreover, the numerical investigation also illustrates that the nonadjacent distribution of multicavities has more serious influence on tunnel structures than that from adjacent distribution of multicavities as well as that from a single cavity.

Download Full-text

Stress state analysis and optimization in the vicinity of the sensor of SMART-material

Procedia Structural Integrity ◽

10.1016/j.prostr.2017.07.074 ◽

2017 ◽

Vol 5 ◽

pp. 99-106

Author(s):

V.P. Matveenko ◽

I.N. Shardakov ◽

N.A. Kosheleva ◽

A.Yu. Fedorov

Keyword(s):

Stress State ◽

Smart Material ◽

State Analysis

Download Full-text

Combined numerical-analytical technique for stress state analysis in the vicinity of a mined seam

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts ◽

10.1016/0148-9062(92)93063-p ◽

1992 ◽

Vol 29 (5) ◽

pp. 328

Keyword(s):

Stress State ◽

Analytical Technique ◽

State Analysis

Download Full-text

Critical stress state analysis of beams

Reinforced and Prestressed Concrete ◽

10.1017/cbo9780511997372.016 ◽

2012 ◽

pp. 329-347

Author(s):

Yew-Chaye Loo ◽

Sanaul Huq Chowdhury

Keyword(s):

Stress State ◽

Critical Stress ◽

State Analysis

Download Full-text

Investigation of the influence of the railroad track on the stress state of the tunnel lining

MATEC Web of Conferences ◽

10.1051/matecconf/201823901020 ◽

2018 ◽

Vol 239 ◽

pp. 01020

Author(s):

Mikhail Pleshko ◽

Alexei Revyakin ◽

Natalia Malishevskaya

Keyword(s):

Stress State ◽

Numerical Model ◽

Stress Distribution ◽

Elastic Layer ◽

Tunnel Lining ◽

Railway Track ◽

Deformation Characteristics ◽

Railroad Track ◽

Circular Tunnel ◽

Moving Vehicles

Tunnel lining takes significant loads from moving vehicles. The consequences of their impact depend on the design of the railway track and the deformation characteristics of its elements. For their study, a numerical model of a circular tunnel has been developed. As a result of the model calculation, the values of the main vertical stresses in the main tunnel structures were obtained. It is established that with increasing loads from the wheel to the rail from 100 to 200 kN, the voltage on average increases by 50%. The stress distribution is affected by the rigidity of the elastic layer. When it increases, the vertical stresses in the sub-rail support decrease nonlinearly, while in traveling concrete they increase nonlinearly.

Download Full-text