World's Longest Suspension Footbridge in Dolní Morava, Czech Republic

Structures Analysed with Dlubal Software

  • Customer Project

Customer Project

In May, 2022, a new Sky Bridge footbridge was opened in the Dolní Morava area (the Czech Republic), which became the longest footbridge in the world with a length of 721 m. The design and construction of the footbridge were carried out by TAROS NOVA a.s., and the structural analysis was performed in RFEM 5.

Planning and Construction

TAROS NOVA a.s.
www.taros-nova.cz

Investor SNĚŽNÍK, a. s.
Operator Mountain resort Dolní Morava
www.skybridge721.cz

Parameters of Bridge Structure

Model

The new pedestrian bridge connects two mountain ridges at an altitude of over 1,000 m above the sea level in the Dolní Morava area, Czech Republic. The footbridge is only open during designated hours, and the access to it is only allowed on foot and one-way.

Structure

The main suspension ropes FLC 76 (Fully Locked Coil) with a length of 698.6 m are anchored to steel pylons on opposite sides of the valley. The footbridge is secured against the wind along its entire length by a system of ropes anchored to the concrete footings on the slope below the bridge.

The bridge deck consists of the bridge sections with a length of 3.0 m and a width of 1.2 m, consisting of untypical longitudinal members, between which anti-slip gratings are welded. The main wind ropes FLC 56 are connected to a special tensioning pulley device with a weight of about 4 t, which ensures the tensioning of the wind ropes where the tension decreases due to the temperature changes and accidental loads.

Structural Analysis

To find the most suitable conceptual solution for the footbridge construction, a 3D member model was created in RFEM 5. A total of 16 variants of calculation models was created, which differed in the number of the main supporting ropes, the sag, and the design of the securing wind ropes.

Furthermore, several partial models of the structural parts were created, which were mostly modeled by using planar elements. The partial models were mainly used for the detailed design of a steel pylon and structural joints.

For the calculation of the footbridge, the constant, prestress, snow, and wind loads were taken into account. The nonlinear calculation was performed according to the large deformation analysis.

Project Location

Dolní Morava
Czech Republic

Keywords

Pedestrian bridge Suspension bridge Footbridge

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  • Updated 15 July 2022

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