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Reinforcement - Underground Garage, Coop, Kasparstrasse - Bern, Switzerland

Prestressed Systems

The application of the pre-stressed CFK-Laminates was carried out in three parts in a total of seven working days.

Country 

Switzerland

Location 

Coop, Kasparstrasse, Bern/BE

Date 

2014

Case Study 

Reinforcement with pre-stressed S&P CFK-Laminates (FRP 2014_02)

Solution 

With pre-stressed S&P CFK-Laminates, as well as concrete bearers, the dilation joints of the parking deck on the third basement level (-3) are coupled using frictional force-transfering connections. To achieve this, max. 2 x 4 laminates are applied onto the upper deck surface, to the left and right of the columns. The low-modulus laminates (E-Modul 170 kN/mm2) are pre-stressed to ca. 14 tons or 6 per mil (‰) using a press, and simultaneously stuck on to the deck using the epoxy-mortar S&P Resin 220. The small installation thickness of the pre-stressed laminates enable its application in the 4cm thick top concrete layer.

Material 

44 pre-stressed S&P CFK-Laminates 150/2000 Type 100/1.4 mm, length 4.00 m

Setting of anchors for the pre-stressing direction according to template

Pre-stressing of the laminate with a hydraulic cylinder and a hand-opened press

Installation of end anchors / Remove of clamping unit / Cut to legth of the laminate

Completed pre-stressed CFK-Laminates

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S&P