Antenna Mast Design

• Structural steel: S235, S275, S355, S450
• Structural steel unnealed: S275N, S460N
• Structural steel thermo: S275M – S460M
• Structural steel weather resistant: S235W – S355W
• heat resistant steel: S460Q – S460QL1
• Stainless steel: 1.4301, 1.4541, 1.4571, 1.4404, 1.4435, 1.4539
• user defined type

System

• Input of several segments with different cross-sections and materials

Static Systems

• cantilevered masts clamped at the base
• cantilevered, arbitrarily supported at the base clamped or articulated masts
• guyed masts with three or four cables

Cross sections

• Round tubes as standard profile
• Round tubes user defined

Detail points

• Base
  • circular or annular,
  • with/without rib,
  • with/without ring stiffener
• Flange connection (internal/external)
• Mast opening

Bearings

• The support at the base can be defined as either rigid, articulated or elastic (enter a spring value).
• Additional bearings can be arranged along the chimney for each segment.

Bracing

Bracing of the system can be defined. There is a choice of three or four ropes.

• automatically generated wind loads depending on the selected location
• automatically generated equivalent loads from eddy-excited transverse vibrations
• automatically generated seismic loads
• automatic consideration of the self-weight of the profiles
• Additional, user-defined load cases can be entered (e.g. icing of the support tube, temperature loads, etc.)

The verifications in the ultimate limit state include:

• Verification of the load-bearing capacity of the cross-section taking local buckling failure into account (verification of the c/t limit values and classification into cross-section classes)
• Verification of the elastic cross-section resistance (verification of the equivalent stresses) according to EN 1993-1-1, Eq. 6.1

The calculation is carried out with the design situation selected in the basic parameters:

• Verification of the absolute deformation. The proof of serviceability is carried out with the deformation difference to the undeformed system.
• Proof of relative deformation. The proof of serviceability is based on the deformation differences related to the effective lengths. The effective lengths are determined by the inflection points of the bend line

If required, the program carries out an earthquake verification. The seismic loads can be determined according to DIN 4149, 6.2.2. or DIN EN 1998-1 according to the simplified response spectrum method.

• Verification of the flange connection
• Verification of the base point
• Verification of flue opening

• PDF
• Word
• Printer

• pre defined brief output
• User-defined

Result graphs:

• Internal values: N, Mt, My, Qz, Mz, Qy
• Deformations: spatial
• Stresses: σ,x; τ,z; σ,v
• UtilizationEta: n,el

• Word
• PDF
• FRILO XML

Structural safety verifications

• DIN EN 1993-1-1/NA
• DIN EN 1993-3-1/NA

Wind and snow loads

• DIN EN 1991-1-3/NA
• DIN EN 1991-1-4/NA

Fatigue

• DIN EN 1993-1-9/NA

Earthquake

• • DIN 4149
  • DIN EN 1998-1/NA