2D numerical investigation of segmental tunnel lining under seismic loading

2015 ◽  
Vol 72 ◽  
pp. 66-76 ◽  
Author(s):  
Ngoc-Anh Do ◽  
Daniel Dias ◽  
Pierpaolo Oreste ◽  
Irini Djeran-Maigre
Keyword(s):  
Numerical Investigation ◽  
Seismic Loading ◽  
Tunnel Lining

2D numerical investigation of segmental tunnel lining behavior

2013 ◽  
Vol 37 ◽  
pp. 115-127 ◽  
Author(s):  
Ngoc-Anh Do ◽  
Daniel Dias ◽  
Pierpaolo Oreste ◽  
Irini Djeran-Maigre
Keyword(s):  
Numerical Investigation ◽  
Tunnel Lining

scholarly journals Performance Investigation of Tunnel Lining with Cavities around Surrounding Rocks

2020 ◽  
Vol 2020 ◽  
pp. 1-5 ◽  
Author(s):  
Jiajia Li ◽  
Yong Fang ◽  
Cheng Liu ◽  
Yongxing Zhang ◽  
Weihua Lu
Keyword(s):  
Stress State ◽  
Numerical Investigation ◽  
Tunnel Lining ◽  
Cavity Size ◽  
Cavity Depth ◽  
Tunnel Stability ◽  
Severe Effect ◽  
Single Cavity ◽  
Cavity Width

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.

2D seismic numerical analysis of segmental tunnel lining behaviour

2014 ◽  
Vol 47 (3) ◽  
pp. 206-216 ◽  
Author(s):  
Ngoc Anh Do ◽  
Daniel Dias ◽  
Pierpaolo Oreste
Keyword(s):  
Numerical Study ◽  
Seismic Loading ◽  
Element Model ◽  
Seismic Signal ◽  
Tunnel Lining ◽  
Induced Response ◽  
Static Solutions ◽  
Comparative Results ◽  
Tunnel System ◽  
Better Than

Segmental tunnel linings are now often used for seismic areas in many countries. Some prescriptions and guidelines specifically address the issue of seismic design. Unfortunately, the behaviour of segmental tunnel lining under seismic loads is still somewhat unclear. The influence of segment joints on tunnel lining behaviour during seismic loading has in fact not been quantitatively estimated in the literature. This paper presents a numerical study in order to investigate the performance of segmental tunnel lining under seismic excitation. Analyses have been carried out using a two-dimensional finite difference element model. The seismic signal obtained from an earthquake in Nice has been adopted as input. The numerical results show that a segmental lining can perform better than a continuous lining during an earthquake. The effect of plasticity of the soil constitutive model on the tunnel lining has also been highlighted. The results have indicated that an elastic analysis is not sufficient to determine the seismic induced response of a soil-tunnel system. Moreover, comparative results have pointed out that equivalent static solutions could result in smaller structural lining forces than those of a true dynamic analysis.

Numerical investigation on flexural performance of retrofitted tunnel lining with short bolts and steel-plate

2020 ◽  
Vol 95 ◽  
pp. 103152 ◽  
Author(s):  
Guang Huang ◽  
Lun Gong ◽  
Xuefei Sun ◽  
Zhen-ning Liang ◽  
Xi-Yuan Wang
Keyword(s):  
Numerical Investigation ◽  
Steel Plate ◽  
Tunnel Lining ◽  
Flexural Performance

Experimental and numerical investigation on the L-joint composed of steel-plate composite (SC) walls under seismic loading

2021 ◽  
Vol 227 ◽  
pp. 111360 ◽  
Author(s):  
Neng Wang ◽  
Feng Zhou ◽  
Zhongcheng Li ◽  
Zhengyu Xu ◽  
Haitao Xu
Keyword(s):  
Numerical Investigation ◽  
Steel Plate ◽  
Seismic Loading
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