Lahn floating inspection gates (Lahnstein, Kalkofen, Cramberg, Nassau, Dausenau)
On five weir systems on the river Lahn (Lahnstein, Kalkofen, Cramberg, Nassau and Dausenau), the in-spection gates are implemented as floating inspection gates. The inspection gates on the weir systems differ in their inclination (from 0.0 ° to 37 ° to the vertical), in their section width and the head. The exist-ing inspection gates have aged and are therefore replaced by new ones.
The inspection gates are designed as welded steel structures and consist of a top and bottom part. Both parts are floatable separately (in the horizontal position). For transport, removable guard boards have been designed that facilitate orchestrating the gate parts into the lock chambers and protect the inspec-tion gates against damage.
According to the head required, an inspection gate is used as a single-part (bottom only) or two-part structure. Both parts are provided with extractable locking pins that may be extracted to the inside and outside. This is necessary since the weir systems have different weir section widths. When the locking pins are extracted, the trimming cells of the inspection gate may distinctly be flooded (this is controlled by compressed air), and the inspection gate attaches to the sill components.
In the course of planning, special services were performed in addition to the preparation of a CAD-3D model and FE computations. This included paint coating surface computation, quantity determination, floating stability computation, design of fall protection and removable walkways.
Project planning
Structural engineering
Other projetcs
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Construction of fixed closing structures on eight existing tunnel portals of Cologne’s city railway
Köln
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Kleine Weser Weir
Bremen
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Weir Lengfurt
Lengfurt/Triefenstein
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Weir Stuhlmüller
Berghausen
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Weir Petershagen
Petershagen
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Weir Drakenburg
Drakenburg
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Drakenburg - Petershagen
Drakenburg and Petershagen
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Duisburg
Duisburg
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Quitzöbel
Sachsen-Anhalt
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Dörpen lock tail
Dörpen
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5 Weirs on the River Main
Erlabrunn, Harrbach, Steinbach, Rothenfels, Freudenberg
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Eefde Lock
Twente Canal, Netherlands
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Flood protection gate
Ipswich, UK
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Upstream inspection gate
Viereth, Main
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Weir Viereth
Viereth, Main
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New locks DEC North
Dortmund-Ems-Canal
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Excavation confinement
Viereth, Main
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Weser weirs
Petershagen, Schlüsselburg, Drakenburg, Dörverden, Langwedel
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Lock repair
Gerlachshausen, Main
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Würzburg weir
Würzburg, Main
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Limbach Weir
Limbach, Main
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Lock
Hessigheim, Neckar
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Standard mitre gates
Neckar
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Dams
Bleiloch and Hohenwarte, Thuringia
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New Kattwyk Railwaybridge
Hamburg
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Flood protection gate
Ladenburg, Neckar
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Pumped storage scheme
Venda Nova, Portugal
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3 Neckar locks
Neckargemünd, Hirschhorn and Obertürkheim, Neckar
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Intake gate
Picote, Portugal
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Ship lift
Niederfinow
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5th lock chamber
Brunsbüttel, Kiel Canal
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Horkheim weir System
Horkheim, Neckar
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Kaiserschleuse Lock
Bremerhaven
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Design of ship lift
Niederfinow
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Ship lift
Yangtze, China
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Neuer Hafen Lock
Bremerhaven
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Sill tunnel
Wilhelmshaven
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rack cleaning machine
Rheinfelden
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Weir
Rheinfelden