Bridge guardrails are a type of barrier used to separate lanes of vehicular traffic on bridges. They are designed to absorb impact and reduce the likelihood of serious injury or death if a collision were to occur. The main differences between bridge guardrails and other guardrails are that bridge guardrails are taller and wider than standard Type A guardrails, as they must protect against higher-velocity impacts due to their location on bridges. Regarding production and sale, bridge guardrails should comply with applicable local regulations and standards. Furthermore, they must be tested to confirm compliance before being put into production and sale.
The bridge railing guardrail is used along the bridges, viaducts
and roads, finished with powder coating and zinc
gavanizing.
Bridge guard railings are made of carbon steel, stainless steel
or other base materials, supplied in various designs to meet
specific grades and requirements.
There are 9 common bridge guardrail types:
1. W-Beam Guardrail – a standard highway guardrail with a
w-shaped profile;
2. Cable Barrier – a flexible system of cables suspended between
posts;
3. Beam Barrier – a pre-fabricated beam that can be installed
quickly;
4. Thrie Beam Guardrail – three corrugations in a w-beam pattern
for extra strength;
5. Post & Block System – posts and blocks used to mount
guardrails;
6. Steel Railing – steel railing designed to deter vehicles from
running off the road;
7. Crash Cushion – a flexible system designed to absorb
impact;
8. Impact Attenuator – an impact absorbing device which reduces
the forces transmitted after a vehicle collision;
9 Folding Guardrail – a collapsible guardrail designed to open up
when hit, then reset itself.
Main types of bridge safety railings include Pipe railings, tube railings and Beam railings.
Pipe Railings:
Galvanized Steel Pipe Fence for Bridges and Roads
Bridge railing
barrier powder coated protected
Tube barriers:
Bridge Guardrail Barriers, blue painted, square tubular fencing
W Beam Type Guardrails for Bridges
Steel beam elements for construction of bridges in the road
network, flexible beam Railings double wave
Bridges project in country road, of double wave beam Railings, hot-rolled
structural steel 36 for railing with posts kind W6x15section of
1.11m.
Beam type guardrail, 3.81meter double-wave, with minimal
thickness gauge steel 2.67mm, standadrd requirements of
AASHTOM180, with hot-dip galvanizing for all connections with
bolts, nuts and washers.
All posts shall be structural steel designation A 36, equivalent
to AASHTOM 270 M designations Grade36, ASTMA 709 Grade 36 andM
183,with a minimum breaking strength of 4060kg/cm² and a mini mum
yield strength of 2520kg/cm², Section I W6x15type(with wing 6 ")
of L 1.11m.
Elements:
Beam rail DOUBLE WAVE, length 3.81m.
Terminal tail of duck (Baranda flexible beam), length
1.80m.
Galvanized metal post to flex beam guardrail, height 1.11m.