scholarly journals Influence of curvature change on soil arching effect in underground space development

2021 ◽  
Vol 293 ◽  
pp. 01003
Author(s):  
Binbin Xu
Keyword(s):  
Strain Field ◽  
Radial Stress ◽  
Simplified Model ◽  
Underground Space ◽  
Soil Arching ◽  
Arching Effect ◽  
Soil Arching Effect ◽  
Field Displacement ◽  
The Status ◽  
Strain Relationship

This paper mainly studies the behavior of axisymmetric radial interaction between soil and structure under radial stress. Considering the possible factors in the interaction, such as the soil arching effect caused by the finite curvature, a simplified model is established. The influence of curvature change on the stress field, strain field, displacement field and stress-strain relationship is analyzed. Finally, the status of various factors in the axisymmetric radial interaction and the influence of their changes on the interaction are proposed.

scholarly journals Influence of constitutive model on soil structure interface interaction under axisymmetric condition

2021 ◽  
Vol 283 ◽  
pp. 01001
Author(s):  
Binbin Xu
Keyword(s):  
Strain Field ◽  
Radial Stress ◽  
Soil Structure ◽  
Large Scale ◽  
Comprehensive Model ◽  
Finite Element Software ◽  
Field Displacement ◽  
Key Points ◽  
Strain Relationship ◽  
Relationship Of

This paper mainly studies the performance of axisymmetric radial interaction between soil and structure under radial stress. One of the key points is the research on the mechanical properties of the interface. The latter is now the frontier field, and also the focus of this paper's theoretical analysis. Based on FEM, a large-scale international finite element software, this paper attempts to establish a general comprehensive model with comparative function through the advantages of numerical simulation. After obtaining the results, the analysis focuses on the influence of different materials on the interaction, and summarizes the stress field, strain field, displacement field and stress-strain relationship of the model under different materials.

scholarly journals Pile-Spacing Calculation of Anti-Slide Pile Based on Soil Arching Effect

2020 ◽  
Vol 2020 ◽  
pp. 1-6 ◽  
Author(s):  
Guangfu Chen ◽  
Liangchao Zou ◽  
Qing Wang ◽  
Guodong Zhang
Keyword(s):  
Load Capacity ◽  
Limit Equilibrium ◽  
Interaction Mechanism ◽  
Soil Arching ◽  
Pile Spacing ◽  
Arching Effect ◽  
Soil Arching Effect ◽  
Engineering Designs ◽  
Practical Engineering ◽  
The Difference

Anti-slide pile is one of the most frequently used measures in landslide control globally. Pile-spacing has always been determined by the load capacity of single piles or according to engineering empirical experience. Many engineering practices and laboratory experiments show that the soil arching effect exists in landslide control with anti-slide piles. In this study, we aim to calculate pile-spacing in terms of the soil arching effect. We investigated the pile-soil interaction mechanism and propose that, at the limit, the pile-back soil arch resists landslide thrust only. According to Mohr–Coulomb strength theory and limit equilibrium theories, we derived a new pile-spacing calculation equation. We verified the derived pile-spacing calculation equation with real projects. The calculated results are similar to those of practical engineering designs, in which the difference is within 10%. The equation can be used in anti-slide pile preliminary design. This study can be a reference for pile-spacing calculation based on the soil arching effect.

Research on Chamber Earth Pressure of EPB Shield Considering Soil Arching Effect

2014 ◽  
Vol 1065-1069 ◽  
pp. 373-377
Author(s):  
Jing Cao ◽  
Hai Xing Yang ◽  
Bo Liang ◽  
Hai Ming Liu
Keyword(s):  
Earth Pressure ◽  
Shield Tunnel ◽  
Pressure Balance ◽  
Soil Arching ◽  
Shield Tunneling ◽  
Arching Effect ◽  
Soil Arching Effect ◽  
Earth Pressure Balance ◽  
Tunnel Depth ◽  
Epb Shield

Chamber earth pressure is one of the significant parameters during the Earth Pressure Balance (EPB) shield construction processing. The soil arching effect is existence when the tunnel depth is enough. It is significant to consider the influence of arching effect to analyze the pressure in soil chamber in shield tunneling. In this paper, the influence of arching effect is considered to calculate the chamber earth pressure. Firstly, the soil is supposed as loose media, and the necessary buried depth of producing arching affects is deduced according to the loose media theory. Then, based on the characteristic of proper arching axis, the equation and the height of proper arch are obtained. At last, the calculation formula of minimum chamber earth pressure of EPB shield tunnel is deduced which can consider the effect of arching effect.

A novel optimal plane arrangement of stabilizing piles based on soil arching effect and stability limit for 3D colluvial landslides

2015 ◽  
Vol 195 ◽  
pp. 236-247 ◽  
Author(s):  
Changdong Li ◽  
Junjie Wu ◽  
Huiming Tang ◽  
Jiao Wang ◽  
Feng Chen ◽  
...  
Keyword(s):  
Stability Limit ◽  
Soil Arching ◽  
Stabilizing Piles ◽  
Arching Effect ◽  
Soil Arching Effect

Influence Analysis of Ground Asymmetric Filling Load on Spandrel with Different Bases of Existing Open Trench Tunnels

2014 ◽  
Vol 644-650 ◽  
pp. 5028-5034
Author(s):  
Jing Cao ◽  
Qiong Xiang Pu ◽  
Hai Ming Liu ◽  
Shi Sheng Zeng
Keyword(s):  
Internal Friction ◽  
Friction Angle ◽  
Soil Arching ◽  
Soil Layers ◽  
Arching Effect ◽  
Soil Arching Effect ◽  
Backfill Soil ◽  
Local Soil ◽  
Side Walls ◽  
Open Trench

Based on the theory of equivalent internal friction angle, the soil layers around the tunnel were equal to cohesionless homogeneous mass in this paper. On the basis of the Terzarghi unconsolidated mass theory, the local soil arching effect of the existing open trench tunnel which was located the side walls load was discussed under the ground asymmetric filling. Furthermore, when the backfill soil appeared the local soil arching effect, the critical embedded depth formula was given. Finally, it is concluded that both the size and distribution of the ground asymmetric filling load have influence on the local soil arching effect of the existing open trench tunnel.

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