Marina Hotel Kressbronn-Gohren at Lake Constance, Germany

Structures Analysed with Dlubal Software

  • Customer project

Customer Project

The marina hotel is situated between Friedrichshafen and Lindau, on Lake Constance, one of the most attractive regions in Germany. However, this exclusive location offers some challenges which must be considered in the structural engineering. For example, actions due to wind and earthquakes are considerably increased in the area around the lake.

Structural Engineering Ingenieurbüro Rohmer GmbH, Laupheim, Germany
www.statik-rohmer.de
Architect Götz Siegmann, Langenargen, Germany
Construction Project management
Ingenieurbüro Ugo Mordasini, Langenargen, Germany
www.mordasini-baumanagement.de

Contractor
Georg Reisch GmbH & Co. KG, Bad Salgau, Germany
www.reisch-bau.de
Investor Meichle + Mohr GmbH, Kressbronn, Germany
www.meichle-mohr.de

The multi-story hotel is situated in seismic zone 2. RFEM allowed to model and calculate the complex geometry in a realistic way. Using the RF‑DYNAM add-on module, the seismic design could be performed without problems.

Structure and Design

The entire design of the multi-storey hotel has been carried out in a spatial FEA model in RFEM. In addition to the load cases self-weight, live load, snow and wind, equivalent seismic loads have been taken into account.

The building consisting of several segments is stiffened by reinforced concrete frames and a staircase core. Due to the structure shape and the requirement to determine the natural frequencies, it had been obvious that a spatial calculation would be advantageous.

The hotel has a length of 134 ft, a width of 105 ft and a height of 51.5 ft. The total mass is approximately 2,100 tons.

The structural model consists of 626 nodes, 92 surfaces and 123 members. The FE mesh has 12,758 nodes and 12,923 finite elements. The calculation time for all load cases (linear analysis) was about 30 seconds.

"The multi-story hotel building is located in seismic zone 2. RFEM made it possible to model and calculate the complex geometry in a realistic way. By using the add‑on module RF‑DYNAM, seismic design could be performed without any problems. With a conventional analysis, a realistic calculation of the structure wouldn’t have been possible and would have led to significantly increased construction costs." says Anton Rohmer, the responsible structural engineer.

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  • Updated 10 March 2021

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