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Building and detailed designs of the railway
viaduct for the A-2 highway ( WK-5 structure ) located over the
A-2 highway Swiecko – Warszawa at km 163 .500 in the course
of the railway line Wroclaw –Poznan at km 159.083 and
Staroleka –Lubon line at km 2.847 in Lubon by Poznan.
The project consisted in construction of
a quasi- tunnel in the form of a number of
three-span ferroconcrete frames with the total length of L= 52,5
m. Along the axis of the highway the length of the structure
amounts to 140 m. The implementation of the structure directly
under the existing tracks of Wroclaw –Poznan railway line
and Starołęka –Lubon branch line was designed by using
JBM method. The method consists in erection of the structure in
parallel to the axis of existing tracks and crosswise shift of the
finished viaduct into the axis of the track spacing. The structure
was erected on the assembly construction in the form of slab
constituting also an anchoring element for the shifted
construction. The crosswise shift of the structure was executed
within the time of 72 hours’ total closure of the line. The
method applied enabled considerable reduction of the duration of
investment, elimination of by-pas construction or long limits in
railway traffic.
The structure implemented on
the grounds of the designs prepared by the Office was awarded
first –degree prize in the competition “ the
Construction Site of 2001 year” and the design itself won
the distinction in the competition “ Engineering Design of
the Year “ organised by Chamber of Construction
Designing.
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