S9 Crane Runway Girder - Frilo

Nemetschek Frilo GmbH - Applications for structural calculation and design
S9
Crane Runway Girder
Application options
The S9 application is suitable
for the calculation of craneways
carrying up to two bridge or
underhung cranes in accordance
with DIN 18800 and
DIN 4132. The following verifications
are performed:
Verification of the stability
against lateral torsional buckling
in a second order analysis
Stress analyses for the cross
section and the welding seams
Analysis of the local wheel
load transfer at the top or bottom
flange
Service strength verification
for the cross sections and the
welding seams
Service strength analyses for
the local wheel load transfer
at the top or bottom flange
Web buckling (eigenvalue
analysis)
Serviceability analysis
System
After selection of the appropriate
crane system among the
options
bridge crane - EFF (singlewheel
drive, both wheels are
fixed bearings)
underhung and suspension
crane
underslung trolley
the user must define discrete
supporting conditions and cross
stiffeners along the craneway
girder. The total length of the
girder must be specified. Any
type of support can be defined
with consideration of horizontal
stiffening bracings. A crane rail
and end fittings are also available
for selection.
Material: S235, S355.
Constant cross section:
Rolled-shaped sections: I,
IPE, HE-A, -B, -M, userdefined
I-sections with or
without reinforcement by top
flange angles on both sides.
Crane rail: A type, F type or
block rail (w/h) with structural
effect if applicable
Elastic base of top-mounted
crane rails
The end fittings can optionally
be located outside of the
crane runway.
Action
The user can define one or two
cranes that are operated independently
of each other and
optionally assign
the lifting classes H1 to H4
and
the duty groups B1 to B6 in
accordance with DIN 15018.
S9 allows the calculation of
lateral horizontal loads as per
DIN 15018. The following actions
on the craneway are
automatically derived from the
specified crane parameters:
Product details www.frilo.com As of: 10/05/2010

Self-weight
Vertical wheel loads
(with HM, if applicable)
Horizontal lateral loads
For standard systems, the
loads are generated automatically.
In special cases, the user
can enter the loads that produce
the actions directly.
Therefore, the system is not
limited to particular crane systems
and other variable loads
can be defined.
The bumper forces are assessed
by S9. Forces produced
by start-up and braking operations
of the crane bridge are not
considered in the present software
version.
The combinations of actions
are generated automatically.
The user can take corrective
actions directly here too. Predeformation
is taken into account
in accordance with the
horizontal supporting conditions
right from the beginning.
Types of verifications
Calculation of internal forces,
deformations and stresses
with imperfections in accordance
with the second order
bending torsion theory including
warping torsion.
Automatic assessment of the
most unfavourable load positions
for each verification
Design as per DIN 18800 P1,
P2, P3 and 4132:
Verification of the ultimate
limit states (e-e method) and
the serviceability limit states
Verification of the service
strength as per DIN 4132
Calculation of the stresses
produced by the global supporting
effects and the local
loading resulting from load
application
Calculation of the design
bearing forces, the bearing
forces with a reduced dynamic
coefficient or without
such coefficient for the connected
or foundation structures.
Optionally, the user can take
the mass forces HM and HS
into account for one crane
only or assign common MaxR
and HM values to both cranes.
Limitations
Only the structural steels
S235 and S355 are available.
The reduction of fy,k when t >
4 cm is not taken into account
Constant cross section
No hollow boxes
The user might be required to
adjust the pre-deformation
produced by the decisive action
subsequently
Output
Additional output sections
showing particular calculation
results
Variable output profile optionally
structured according to
the system, the loads, the
general structural safety verifications
or special verifications
of the craneway
3-dimensional graphical representation
of the results of
each superposition for the
structural safety, the serviceability
and the service
strength
Graphical representation of
the limit line of the internal
forces Qz, My, Qy, Mz, Mt
and Mw
Optional bar graph of axial,
shear and comparison
stresses in each relevant
point of the cross section over
the entire craneway girder per
mouse click
Optional graphical representation
of the service strength
verifications per notch case at
each point of the cross section
over the entire craneway
girder per mouse click
If the PLII application is installed,
the user can transfer
the system and the loading
for the verification of the web
buckling stability
Enhanced web buckling examinations
Buckling safety verifications are
always required for craneway
girders. The safety against
buckling failure must be verified
for webs and compression
flanges. The verification of the
buckling safety of compression
flanges is typically done by
verifying the limit ratio of b/t in
accordance with DIN 18800-1,
Tab. 13. Where rolled sections
are concerned, this verification
produces a positive result under
normal conditions. Because
web buckling must be examined
under simultaneous action
of the edge stresses x, y and
, a simplified verification of the
buckling safety as per
DIN 18800-1, merely checking
compliance with the limit b/t
ratio, is not suitable.
In S9, the basic combination of
permanent actions and vertical
wheel loads is taken into account
as the largest variable
action in the verification of the
safety against web buckling.
This verification is limited to the
web buckling safety under
wheel loads in the span of the
girder. Under particular conditions,
additional examinations
of the web buckling behaviour
might be required. The application
PLII Plate Buckling is
available for this task. S9 offers
a corresponding interface to
PLII for the data transfer.