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The suspension bridge crossing the river Madre de Dios in the Peruvian city of Puerto Maldonado was designed and supplied by the company Waagner- Biro. Shipment took place in 1981. The bridge forms a part of the Interoceanic Highway, the road connection between Peru and Brazil. The completion of the project and consequently the installation of the suspension bridge were interrupted for political reasons and re-started only in 2004. The construction of the suspension bridge was realized as a portion of the last road sections in the years 2009 to 2011. This article covers the inventory of the bridge components as well as the bridge installation including the necessary extensive auxiliary equipment. © Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin.

Lechner M.,Waagner Biro Bridge Systems AG | Menzel A.,Waagner Biro Bridge Systems AG | Fiebinger R.,Waagner Biro Bridge Systems AG
Stahlbau | Year: 2015

The new double bascule bridge in Hamburg will substitute the Rethe vertical lift bridge from 1936 by 2016. In total it consists of four bridge leaves, of which each two are connected longitudinally by a middle locking system. Each bascule bridge shows a span of 104.2 m in-between the pivot bearings and therefore belongs to world's largest of its kind. In raised condition a watercourse of 64 m width and unlimited height is opened. One bascule bridge serves for rail traffic, the other one for road traffic. The bascule bridges are located side by side and may be actuated independently of each other. The total width of the road bascule bridge is 14.00 m, of the railway bascule bridge 10.30 m. The bridge leaves dispose of a hydraulic drive by means of hydraulic cylinders and hydraulically actuated rear locks. One particularity inherited is the realization of the middle locking system as finger locking without movable parts. This middle locking device is able to transmit shear forces as well as bending moments. In July 2014 the bridge leaves were lifted in by a floating crane, positioned on the pivot bearing substructure and lifted into open position by the hydraulic drive. © Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin · Stahlbau.

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