Enerpac SBL1100, Инструкция по эксплуатации и техническому обслуживанию

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Document number: ED. 03622.00.001.R04.ENG
Page 41 of 151
ED.02518.00.001.R08.ENG
Page 41
To calculate the bearing pressure, you may use the following procedure:
Parameter Abbrev Value
Unit Length Unit length 2.76 m
Own mass Unit mass 12 metric tons
Skid track Height Skid height 0.3 m
Width Skid w idth 0.3 m
Auxiliary material (beams, shackles etc) Aux mass 20 metric tons
Safety factor S 1.7
Maximum force on one unit which can occur
during the operation
F Depends on the operation
Timbers Width Timber width
Depend on the applied
timbers
Height Timber height
Gap between the timbers Timber gap
1. Surface of one footprint =
width * length
(Skid
width + 2 * Timber height ) *
[ Unit
length + 2 * (Skid height + Timber height ) ]
2. Surface on which the pressure is
exerted for one unit = 2 * footprint
2 * footprint
3. Support ratio, to correct for the gaps
between the timbers
Support_Ratio =
Timber
width / (Timber width + Timber gap )
4. Pressure on the ground
[metric tonnes / m
2
]
S
io SupportRat Surface
mass Aux mass Unit F
*
*
4 / _ _
V
Width
Length