Autumn 2016

TenCate Geotube® technology was used to create building platforms for the construction of the Lach Huyen Bridge at Hải Phòng (Haiphong, Vietnam). Now work has started on expanding and further developing the city’s port and industrial area, which includes the new project Nam Dinh Vu. Here too the same technology is being utilized to form the perimeter reclamation dykes of Nam Dinh Vu.

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Construction of the Lach Huyen Bridge

Hải Phòng (Haiphong) is one of the most important seaport cities in Vietnam as well as a major industrial centre. The construction of the city’s Lach Huyen Bridge, the largest bridge over water in Vietnam, involved the creation of two building platforms based on TenCate Geotube® technology– to be specific, 23.5 kilometres of sand-filled geotextile containers, each 50 metres long and with diameters circumferences varying from 4.6 to 9.5 metres.  Part of the seabed along the bridge required dredging to increase water depth. Geotextile containers 15 metres long and 9.5 metres in circumference have been used for the containment dyke around the storage depots for the dredged spoils.

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The building platforms and storage depots are components of a major (partly completed) infrastructure project at Dinh Vu, the outer harbour of Haiphong. This is subdivided into four Deep C zones. The project includes the building of a new seaport, the extension of Haiphong Airport and the expansion and further development of the Dinh Vu-Cat Hai industrial cluster. The Lach Huyen Bridge divides the industrial zones Deep C I (Dinh Vu Industrial Zone or DVIZ) and Deep C II (new reclamation) or Nam Dinh Vu (South Dinh Vu).

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The construction works as seen by Google Earth

TenCate Geotube® technology is being deployed for the construction of Deep C II. Temporary dykes (1.8 kilometres long) formed by a double row of containers filled with locally available sand have been erected around the surface area earmarked for reclamation. This technology has also been used to create the work island by the bridge. A dyke body has been built between two parallel rows of TenCate Geotube® units on a layer of TenCate Mirafi® PET800 that serves as basal reinforcement. Sand-filled TenCate Geomattress® provides protection at the foot of the dyke.
The actual land reclamation will be carried out in stages by filling sand behind the constructed reclamation dykes, planned according to demands of interested start as soon as there is a land buyers.

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For the construction of the Lach Huyen bridge TenCate Geotube® technology was used for building two construction platforms Top right: the drained platform

Work started started on the construction of the construction of reclamation dykes of Deep C II zone in 2015.  On 14 December 2015 the land developer, Rent-A-Port Group, a Belgian company specializing in marine infrastructure and the development of industrial sites officially conducted a ground breaking ceremony on a reclaimed platform on the site.

Blue fabric (Tecawork Blue 65287)