Results 91 to 100 of about 17,530 (271)
Advances in Civil Engineering, Volume 2026, Issue 1, 2026.To investigate the collapse mechanisms of diversion tunnels during construction under seismic loading, a coupled continuum‐discrete numerical simulation method was employed. Before seismic excitation, the initial support system was generally stable, with minor damage observed at the arch foot and arch crown (damage coefficient <0.033).
Bin Gan +5 more
wiley +1 more source
Experimental Study on Basic Mechanical Properties of Steel Fiber-Reinforced Siliceous Wet Shotcrete
Advances in Materials Science and Engineering, 2018 In order to solve the problem of low strength and easy cracking of shotcrete in permanent support of tunnel single shell lining, the effects of steel fiber-reinforced siliceous on mechanical properties of wet shotcrete were investigated by the tests of ...
Xu Yan +4 more
doaj +1 more source
The Rise and Fall of The Thin Concrete Shell [PDF]
, 2012 Concrete was a popular material choice that stretched the imagination of building designers over past decades. This material that imbued notions of plasticity and flow, sets innovative ideals soaring with hope in the postwar landscape, seen as the ...
Tang, Gabriel
core
Experimental behavior of mesh reinforced shotcrete and steel fiber reinforced shotcrete panels [PDF]
, 1998 The existent experimental data reveal that the steel fiber reinforcement improves the energy absorption capacity, the fatigue and impact strength and the cracking behavior of the cement based materials.
Barros, Joaquim A. O.
core
Ultrasonic sounding and monitoring of the excavation damaged zone in relation with drift support [PDF]
, 2013 International audienceUnder high in situ stresses, the excavation of underground openings generally causes the creation of a disturbed (EdZ: Excavation disturbed Zone) and/or damaged (EDZ: Excavation Damaged Zone) zone, resulting from the initiation and ...
Balland, Cyrille +2 more
core +2 more sources
Quantification of the effects of thin spray-on liner application on shotcrete tensile strength [PDF]
, 2015 In underground and surface excavations, rock mass instability often occurs, and one method of remedying this is to spray support liners onto the unstable rock surfaces.
Masethe, Richard
core
Study on creep performance of shotcrete lining for tunnels
Journal of Materials Research and TechnologyCreep, as a long-term deformation characteristic of shotcrete, significantly influences the load-bearing performance and durability of tunnel support structures. This study conducted creep tests on shotcrete under varying stress levels.
Yali Jia +5 more
doaj +1 more source
Damage of shotcrete under freeze-thaw loading
Journal of Civil Engineering and Management, 2017 The freeze-thaw durability of shotcrete can be improved by adding an air-entraining agent in cold areas. The main focus of this paper is to investigate the changes in the internal pore structure of C25 ordinary shotcrete and shotcrete mixed with a RM-YQ
Jianxun Chen +4 more
doaj +1 more source
How tunnel boundary irregularities can influence the stresses in a shotcrete lining [PDF]
, 2009 The shape of a tunnel boundary excavated by drill & blast in fractured rock masses is influenced by geological conditions and blasting operations. The overbreaks, apart from influencing the construction times and costs, also have an important influence ...
Borio, Luca, Peila, Daniele
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ERECTION OF SHOTCRETED LINING WITH EXPLOSIVES
Bridges and tunnels: Theory, Research, Practice, 2015 The basic circuit design of erection of shotcrete lining in vertical excavations of round cross-section, and also algorithm of scaling of key parameters of a way is considered. Results of scalings of parameters of a way on the given algorithm for the basic industrial explosives are ...
Khomenchuk, О. V. +2 more
openaire +2 more sources