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Publications in
Primary Support Systems
Total Items found:
21
EFFECT OF PRE-GROUND IMPROVEMENT METHOD DURING SHALLOW NATM TUNNEL EXCAVATIONS UNDER UNCONSOLIDATED CONDITIONS (2013)
Cui Y.
,
Kishida K.
<p>During the construction of the Bullet Train lines in Japan, several shallow tunnels were excavated in unconsolidated ground using the New Austrian Tunnelling Method (NATM). However, ground and tunnel settlements frequently occurred due to the low stiffness ...
Filed under:
Tunnel Engineering
-
Primary Support Systems
Reference:
Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris 2013
NONLINEAR FINITE ELEMENT ANALYSIS OF SHOTCRETE LINING REINFORCED WITH STEEL FIBRE AND STEEL SETS (2013)
Kim J. S.
,
Kim M. K.
et al.
<p>This paper deals with a shotcrete lining with steel sets. The nonlinear analyses of a reinforced shotcrete lining are performed by using fiber beam-column element, which is a forced based element on the Euler-Bernoulli beam theory. The constitutive model ...
Filed under:
Tunnel Engineering
-
Primary Support Systems
Reference:
IACSIT International Journal of Engineering and Technology, Vol. 5, No. 6, December 2013
THE TYPES OF TUNNELS MAINTENANCE IN UMBRELLA ARCH METHOD (2013)
Rostami A.
,
Dehkordi P. K.
et al.
<p>During tunneling in loose grounds, the ground deformation caused by drillings around the tunnel, leads to land subsidence and the adjacent tunnel which would affect tunnel structure and surrounding structures. In such situations it is necessary to improve ...
Filed under:
Tunnel Engineering
-
Primary Support Systems
Reference:
Open Journal of Civil Engineering, 2016, 6, 156-162
DESIGNING SHOTCRETE AS PRIMARY SUPPORT IN TUNNELS (2011)
Oraee-Mizamani B.
,
Tavassoli M.
et al.
Since the advent of New Austrian Tunneling Method (NATM), shotcrete as a primary means of support in tunnels has been widely applied. It’s most important features are durability, speed of application and cost effectiveness. This paper introduces some tables ...
Filed under:
Tunnel Engineering
-
Primary Support Systems
Reference:
30th International Conference on Ground Control in Mining
STUDY OF ROCK-LINING INTERACTION FOR CIRCULAR TUNNELS USING FINITE ELEMENT ANALYSIS (2011)
Elsayed A. A.
<p>One of the main objectives of this study is to investigate the effect of different parameters on the behavior of excavated tunnel before and after lining activation. The analysis followed the same procedure which had been applied in the analysis of the ...
Filed under:
Tunnel Engineering
-
Primary Support Systems
Reference:
Jordan Journal of Civil Engineering, Volume 5, No. 1, 2011
ANALYSIS OF A BOLT-REINFORCED TUNNEL FACE USING A HOMOGENIZED MODEL (2010)
Bourgeois E.
,
Hosseininia E. S.
This communication deals with the effect of tunnel face reinforcement on the wall convergence and on the loads in the lining, studied by means of a homogenized anisotropic model for reinforced ground. While the tunneling process is generally handled in a plane ...
Filed under:
Tunnel Engineering
-
Primary Support Systems
Reference:
Numerical Methods in Geotechnical Engineering – Benz & Nordal (eds) 2010 Taylor & Francis Group, London
CONVERGENCE-CONFINEMENT METHOD FOR SIMULATING NATM TUNNELS EVALUATED BY COMPARISON WITH FULL 3D SIMULATIONS (2010)
Svoboda T.
,
Masin D.
The convergence-confinement method (CCM) for simulating NATM tunnels using plane strain finite element method was in the paper evaluated by comparison with fully 3D simulations. Three real shallow tunnels in urban environment in different stiff clays were ...
Filed under:
Tunnel Engineering
-
Primary Support Systems
Reference:
INTERNATIONAL CONFERENCE UNDERGROUND CONSTRUCTION "TRANSPORT AND CITY TUNNEL", PRAGUE 2010, S
3D ANALYSES OF TUNNEL FACE REINFORCEMENT USING FIBREGLASS NAILS (2009)
Kavvadas M.
,
Prountzopoulos G.
The paper investigates these issues using 3D finite element analyses of the near-face region in tunnels excavated in elasto-plastic ground following the Mohr-Coulomb failure criterion. Parametric analyses are performed by varying the density and length of ...
Filed under:
Tunnel Engineering
-
Primary Support Systems
Reference:
"2nd International Conference on Computational Methods in Tunnelling, Ruhr University Bochum, 9-11 September 2009"
DEVELOPMENT AND APPLICATION OF STRESS CONTROLLERS -SYSTEM HONEYCOMB- IN MODERN TUNNELLING (2009)
Podjadtke R.
<p>After a short retrospect on possible elasticity the intended purpose of stress controllers as rock support elements in shotcrete construction is described. Different types of stress controllers are briefly explained. The successful development as well as ...
Filed under:
Tunnel Engineering
-
Primary Support Systems
Reference:
Shotcrete for Underground Support XI
PREDICTION OF FACE STABILITY IN UNSUPPORTED TUNNELS USING 3D FINITE ELEMENT ANALYSES (2009)
Kavvadas M.
,
Prountzopoulos G.
et al.
The paper presents the results of 3D finite element analyses of the near-face region in unsupported tunnels excavated in elasto plastic ground following the Mohr-Coulomb failure criterion. Face extrusion and ultimate face stability are investigated in parametric ...
Filed under:
Tunnel Engineering
-
Primary Support Systems
Reference:
"2nd International Conference on Computational Methods in Tunnelling<br/>Ruhr University Bochum, 9-11 September 2009"