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Core restoration - Deutsche Bank AG - Frankfurt am Main, Germany

Deutsche Bank, Frankfurt am Main

Structural reinforcement

Core restoration - Deutsche Bank AG - Frankfurt am Main, Germany

Reinforcement of wall panels due to new door openings.

Topic 
Core restoration
Object 
Deutsche Bank AG
City 
Frankfurt am Main
State 
Hessen
Country 
Germany
Date 
2009
Duration 
2 weeks

Situation

During the construction project Deutsche Bank AG in Frankfurt am Main, new door openings were cut into the stiffening cores of the towers as part of reconstruction measures. When recalculating the cores, it turned out that there was too little reinforcement in the remaining areas.

Solution

In order to replace the missing reinforcement, CFK laminates bonded in slots were used, as they have a significantly better anchoring behaviour than glued CFRP laminates. In order to keep the number and length of the slots small, two laminates were bonded in one slot. The two CFRP laminates were bonded to each other with adhesive priot to installation, so that it could be assumed that the laminates would be twice as thick. However, the doubling of CFRP laminates is not approved by the building authorities. An individual approval was obtained on the basis of a report by Prof. Dr. Eng. Konrad Zilch. Accordingly, the CFRP laminates could be bonded in the intended manner.

Material

Sto S&P CFK Laminate (slot applied) - processing of approx. 1700 m CFK Laminate bonded in slots.

Image Gallery

  • Towers under construction

    Towers under construction

  • Insertion of the adhesive into the milled slots

    Insertion of the adhesive into the milled slots

  • Insertion of the laminates into the adhesive filled slots

    Insertion of the laminates into the adhesive filled slots

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