典型文献
Face stability of shield tunnels considering a kinematically admissible velocity field of soil arching
文献摘要：
Existing mechanism of simulating soil movement at tunnel face is generally based on the translational or rotational velocity field,which is,to some extent,different from the real soil movement in the arching zone.Numerical simulations are carried out first to investigate the characteristics of the velocity dis-tribution at tunnel face and above tunnel vault.Then a new kinematically admissible velocity field is proposed to improve the description of the soil movement according to the results of the numerical simulation.Based on the proposed velocity field,an improved failure mechanism is constructed adopting the spatial discretization technique,which takes into account soil arching effect and plastic deformation within soil mass.Finally,the critical face pressure and the proposed mechanism are compared with the results of the numerical simulation,existing analytical studies and experimental tests to verify the ac-curacy and improvement of the presented method.The proposed mechanism can serve as an alternative approach for the face stability analysis.
文献关键词：
中图分类号：
作者姓名：
Wei Li;Chengping Zhang;Dingli Zhang;Zijian Ye;Zhibiao Tan
作者机构：
Key Laboratory for Urban Underground Engineering of the Ministry of Education,Beijing Jiaotong University,Beijing,100044,China;School of Civil Engineering,Beijing Jiaotong University,Beijing,100044,China
文献出处：
引用格式：
[1]Wei Li;Chengping Zhang;Dingli Zhang;Zijian Ye;Zhibiao Tan-.Face stability of shield tunnels considering a kinematically admissible velocity field of soil arching)[J].岩石力学与岩土工程学报（英文版）,2022(02):505-526
A类：
kinematically
B类：
Face,stability,shield,tunnels,considering,admissible,velocity,field,soil,arching,Existing,mechanism,simulating,movement,face,generally,translational,rotational,which,some,extent,different,from,real,zone,Numerical,simulations,carried,out,first,investigate,characteristics,tribution,above,vault,Then,new,proposed,description,according,results,numerical,Based,improved,failure,constructed,adopting,spatial,discretization,technique,takes,into,account,effect,plastic,deformation,within,mass,Finally,critical,pressure,compared,existing,analytical,studies,experimental,tests,verify,curacy,improvement,presented,method,can,serve,alternative,approach,analysis
AB值：
0.517507
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