Prefabricated Tendons accelerate Construction Progress on Wroclaw’s new Ring Road

Wroclaw’s city center has been adversely affected by ever increasing traffic volumes. In order to relieve congestion on the arterial roads in the city, Poland’s road construction authority decided to build a new, 35.4km long section of A8 with two lanes in each direction.

On a 26km long section, the new motorway will run through Wroclaw’s north-western outskirts, diverting transit traffic around the city.

Due to its importance both for the city itself and for the infrastructure of the entire region, this project was declared the most important investment for Wroclaw until 2012. The construction of the ring road is divided into three sections.

In co-operation with DSI Germany, Nauen, DSI Poland participated in the construction of the largest of these sections. Among other things, this section consists of two motorway bridges: The 370m long WA-20 and the 1,597m long WA-22A.

Prefabricated Type SUSPA Systems Tendons were installed in the superstructures of both bridges using a movable scaffolding system. On the whole, DSI supplied more than 2,000t of Prefabricated Strand Tendons with K Couplers and 7-0.6", 9-0.6", 12-0.6" and 19-0.6" MA Anchorages.

Thanks to the use of prefabricated tendons that were preassembled in the factory and supplied to the site coiled on drums, the tendons could be installed easily and quickly into the 38m long bridge segments of motorway WA-22A in only six days. The DSI scope included the production, supply, installation, tensioning and grouting of the tendons.

Owner

GDDKiA (road construction authority), Poland

General Contractor

JV, lead by STRABAG Sp. z o.o., Poland; Partners: DYWIDAG Bau GmbH, Germany; Heilit+Woerner Budowlana Sp. z o.o., Poland

Contractor

DYWIDAG Bau GmbH, Germany

Architect

JV, lead by: Profil Sp. z o.o., Partner: BBKS-Projekt Sp. z o.o., Mosty Wroclaw S.C., Mosty Katowice Sp. z o.o., all of them Poland

Design

BBKS-Projekt sp. z o.o., Mosty Katowice sp. z o.o., Mostopol sp. z o.o., all of them Poland; Stähler und Knoppik, Leonhard, Andrä und Partner, Kinkel + Partner GmbH, all of them Germany


DSI Unit

DYWIDAG-Systems International Sp. z o.o., Poland; DYWIDAG-Systems International GmbH, BU Post-Tensioning, Germany

DSI Scope

Supply of more than 2.000t of Prefabricated SUSPA Systems Tendons with K Couplers and 7-0.6", 9-0.6", 12-0.6" and 19-0.6" MA Anchorages

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