diebautechnik | 2 - ThyssenKrupp Bautechnik

10
Under lock and key
Oil-cracking facility redeveloped in the Stralsund industrial park
A new industrial park is being developed nearby to the road to the Rügen embankment.
No matter whether it is a question of constructing
docks or roads, reconstructing embankments or
safeguarding waste sites, the HOESCH steel sheet
piles manufactured by ThyssenKrupp GfT Bautechnik
are used in a whole variety of ways. No wonder,
as the walls carry conviction thanks to their enormous
load-bearing capability and their long life.
The steel sheet piles are also used in the construction
of a new industrial park in the hanseatic city
of Stralsund. As early as 1999, two consolidating
walls were constructed on the site of the former
oil-cracking facility, marking the route for the construction
of the Stralsund bypass and the Rügen
access road. The contaminated earth was removed
at that time.
“In the course of the current building phase, an
approx. 140 metre long new sealing sheet pile wall
is being constructed around the grounds on one
section of the southern sheet pile wall for consolidating
the former tank farm site,” says Dr. Wolfgang
Kruse, specialist consultant at the Rostock
service point, explaining the current construction
work.
Since the old pile foundations in the heavily contaminated
grounds were not to be subject to waste
disposal, they had to be surrounded by sheet pile
walls. “Although it was not easy, we achieved it
by ideal interlocking,” Kruse explains.
The HOESCH sheet pile interlocks, which are provided
with the HOESCH sheet pile wall (DBP 44
27 561, EP 0 695 832) interlocking seal system,
create almost complete seals by compressing the
sheet pile interlocks, making them resistant toward
mineral oils as well as numerous acids and alkalis.
In Stralsund, HOESCH H 3600n +1.0 steel sheet
piles in S355GP quality were used for reasons of
economy. The lengths varied between 17 and 18
metres.
The sections were used as double piles in the northern
area of the sheet pile box section. H 1700
sections in S240GP quality were sufficient in the
southern area because of the higher marl horizon.
These sections were between six and nine metres
long. The respective section lengths were the
result of wide-ranging geotechnical investigations.
Economic Z-profile
By using the most economic H3600n Z-profile, the
constructor was able to save a total of 35 tonnes
of sheet piles in comparison with the tender, thereby
securing the delivery order.
A new industrial park for Stralsund is being developed
in the immediate vicinity of this construction
site at a location which is favourable for transportation.
Here too, confidence is again being shown
in the reliability of ThyssenKrupp GfT Bautechnik.
The contractor and principal, TLG Immobilien
GmbH, required a comprehensive quality assurance
plan with monitoring quality management
also for the installation of the sheet piles. In addition,
the interlocking system was being monitored
in the ground, into which it could only be driven
with difficulty. The piles were positioned without
incident, and all interlocks resisted. The sheet
piles were positioned using a type S 35 drop ham-