STEEL BRIDGE PARAPET META13 (H2)
ROAD SAFETY SYSTEM FOR BRIDGES
The steel bridge parapet META13 is a vehicle containment system specially designed for the edges of the bridge decks, pass works, coronations of maintenance walls and similar works. This system complies with European standard EN 1317-1 and EN 1317-2 and, together with the compliance of part 5 concerning production control, has obtained the CE marking.
The barrier components are manufactured in hot rolled steel sheet of qualities S235JR, S275JR and S355JR according to the EN 10025 standard, and hot-dip galvanized by immersion according to EN 1461 standard. Furthermore, the finishing of this product can be reinforced by the duplex system: hot-dip galvanizing + powder coating.
The bridge parapet META13 has been tested onto cantilever slabs, simulating the real conditions of the bridge decks.
META13 has obtained CE marking according to 1317-5 standard.
The steel bridge parapet META13 has been subject to full-scale crash tests, following European Standard EN 1317-2 in CIDAUT Laboratories, specialized in road infrastructure safety systems, located in Mojados (Valladolid, Spain). META13 satisfies all the acceptance criteria to be considered a high containment level H2 system.
TESTS MADE ACCORDING TO EN 1317-2 STANDARD
|Test TB11||Test TB51|
|900 kg light vehicle||13.000 heavy vehicle|
|100 km/h (62.1371 MPH)||70 km/h (43.496 MPH)|
All parameter values are normalized according to current european regulation.
- The reduced dynamic deflection (0.7 m) and the excellent working width (0.8 m) of the system, allows to install them on slabs with an optimized width. These properties allow to place (set) acoustic and catenary protections a short distance from the parapet.
- Fuse anchor system. In case of a crash, the replacement is quick, simple, economic and without structural alterations on the bridge deck.
- Light and reduced dimentions.
- Possibility to transform into H3 system.
- Easy assembly due to its reduced number of components.
- Can be used as railing through the installation of a grill.
- Reliability of the system being tested on cantilever slabs, representing real conditions of the bridge structures.
- Possibility of adapting alternative anchoring systems in case of existing bridges through chemical anchors.
- Hot-dip galvanized of all the components according EN 1461 standard.
- Powder-coated in all normalised RAL colours.
Catenary protection barriers:
Possibility of installing a shielding system at the rear of the barrier META13
Consult the installation details and the plans of the all different transitions adapted to each device.
Possibility of installing a grill or mesh fixed at the rear of the guard rail META13 to transform it into a railing and meet the requirements of maximum spacing.
Treatment of expansion joins:
Installation of the connectors and expansion abutments adapted to absorb the expected displacement of the structure.
Height of the top bar = 1235 ± 25 mm
Anchoring through plates embedded in the perimeter band of the bridge deck. The guard rail can be installed onto existent bridges using chemical anchors (equivalence demonstrated through justified calculus).
A reinforced concrete slab strengthen the edge of the deck, providing the anchoring of the guard rail META13 posts.
Approximatedweight: 61 Kg/m
Things to consider for the proper functioning of the barrier:
– Cantilevered slabs: It must meet the requirements of the EN 1317 standard. For the META13 guard rail, a perimeter thick band has been designed to minimise the concrete volume. The META13 guard rail has been tested according to EN 1317-2 European standard, above the cantilevered slab representing the real conditions of the bridge structures. In case of impact, the bridge deck is protected through an anchor with fuse screws that allows an easy repair.
– The deformation of a bridge parapet is characterized by the working width “W” and the dynamic deflection “D”. When selecting a vehicle containment system, the working width is one the most important characteristics to take into account, being that any element situated beyond a certain distance, can provoke a malfunction of the system.