View
8
Download
2
Category
Preview:
DESCRIPTION
xls
Citation preview
1
ROCKFALL FENCE DESIGN
1. Data Analysis
Confidence limit: statistical approach on the 95%
Average trajectories inclination °
Tollerance of the barrier inclination [ β ] = °
Trajectory height for 95% of the cases [ Hv ] = [ m ]
Trajectory height on the barrier plane [ Ht ] = [ m ]
Min. distance between barrier and infrastructures [ Di ] = [ m ]
Velocity (translational) [ Vt ] = [ m/s ]
Size [ St ] =
Density of Rock [ W ] =
2. Design Coefficient
Quality of topographic survey
Quality of geomechanical survey - size
Quality of geomechanical survey - density
Quality of rock fall simulation
Low economical value and can easily repaired [ i ] =
Reduction coefficient of the barrier energy
Deformation safety coefficient
3. Design Trajectory
Design trajectory velocity [Vd] = 0 [m/s]
Design trajectory mass [Md] = 0 [kg]
Design trajectory height [Hd] = 0 [m]
Design trajectory energy [Ed] = 0 [kJ]
4. Barrier Specification
Maximum energy according to ETAG 027 [MEL] = [kJ]
Service energy level according to ETAG 027 [SEL] = [kJ]
Maximum dynamic elongation MEL [Db] = [m]
[ α ] =
[ m3 ]
[ kg/m3 ]
[ gtt ] =
[ gtg ] =
[ gtw ] =
[ gtr ] =
[ gEN ] =
[ gDB ] =
2
Standard height of the barrier [Hb] = [m]
Upper free border for design boulder [Fb] = [m]
5. Design Method
Design procedure aimed to (MEL or SEL) SEL
Maximum Energy Level 2800
6. Design Performance
Design energy [ E ] = #DIV/0! [ kJ ]
Design elongation [ D ] = 0 [ m ]
Design height [ H ] = 0 [ m ]
7. Proof Barrier
#DIV/0! #DIV/0!
Elongation proof [(D - Di) ≤ 0 ] 0 Fulfilled
Height proof [(Hd - H) ≤ 0 ] 0 Fulfilled
[ EBTE ] =
Energy proof [(Ed - E) ≤ 0 ]
Recommended