Rock Support

AT - LSC-Element
Lining Stress Controllers 

Field of application 

  • Support for squeezing rock mass conditions
  • Application in combination with shotcrete lining or concrete lining segments

 


Specifications 

AT - LSC-Elements are adapted in terms of type, number, and length to the load-bearing capacity of the lining and the displacements of the tunnel wall. 1)

 

 

Designation LSC-ElementUnitA-II/3A-II/4
Design load Yielding Element Fp [kN] 700

Number of Yielding Elements [#] 34
Design Load FpTOT [kN] 21002800
Deviation Load Cycle
to Design Load tolF 		[%] ±15%
Shortening required to reach
the Design Load lpmin 		[mm] 60
Length [mm] 800-1000

Width[mm]250-350

Height[mm]43

1) AT - LSC-Elements with alternative dimensions available on request

 

 

 

 

Advantages AT - LSC-Element 

  • Warranty of supporting forces of the tunnel lining for squeezing rock mass conditions
  • Controlled stress distribution and yielding ability
  • Avoidance of overstraining of the tunnel lining in terms of rupture processes and consequential damages
  • Optimum utilization of the load-bearing capacity of the shotcrete lining
  • Well-defined load-deformation characteristics
  • Displacement-controlled limitation of axial forces
  • Project-specific adjusted geometry
  • Tunable to the rock mass conditions by means of computer-aided simulation