Civil Engineering Reference
In-Depth Information
Several bridges and crossings for animals were realized with the VFT-WIB method,
next to the typical VFT solution used for 12 integral bridges. The experiences gained from
this contract allowed for the VFT-WIB method to be treated as a typical solution for bridges
in Poland nowadays. There were 6 different structures realized in this technology [1] includ-
ing road bridges (MD1, MD2, MD3, MD4) and crossings for animals (PE1, PE4) which are
presented in “Fig. 1”. Shear connection by composite dowels is used [2, 3] for all structures
being presented with its specific MCL250/115 shape [4].
Figure 2:
Girder systems of the structures realized in course and over S7 road at Olsz-
tynek - Nidzica sector
2. Road bridges
The road bridges (MD) consist of independent structures for single lanes and are designed
as continuous beams. The crossings for animals are realized as integral structures. The total
tonnage of steel built in the structures exceeded 1100 tons of S355M steel in HE1000A,
HE1000B, HE1000M sections. Road bridges in course of S7 can be treated as system solu-
tion - they are designed using double VFT-WIB section and constant height of section, of
583 mm for the prefabricated elements and of 250 mm for the in-situ slab, with a total height
of the composite beam of 833 mm. The steel shapes HE1000A and HE1000B out of S355M
steel were used, depending on the span length which was up to 18 m. The width of the pre-
fabricated elements and the number of beams in the superstructures varied, according to the
geometry of the individual structures. The maximal width of the prefabricated elements was
3060 mm. MD1 bridge consists of two structures of 18.44 m and 17.70 m width, the spans
are L=13+18+18+13m, the skew angle is 62 degrees. There are 6 beams in the transversal
Search WWH ::
Custom Search