Rotating Guardrail Rolling Guard Barrier , Elastic Roller Barrier
System
In order to avoid the vehicle in a collision when driving out of
the road range, to reduce the degree of traffic accident damage,
the central divider of the highway and both sides of the road are
set up with anti-collision guardrail. The common form of
anti-collision guardrail is concrete guardrail, waveform beam
guardrail and cable guardrail, which, cable guardrail is a flexible
guardrail, which absorbs the energy generated by the vehicle
collision is limited, so less application.
At present, the main application of the highway is the concrete
guardrail and waveform beam guardrail. The former belongs to the
rigid guardrail, the latter belongs to the semi-rigid guardrail,
these two guardrails have a better anti-collision effect, but in
the vehicle after the collision, or will produce a large damage. At
the same time, due to these two guardrails on the contour marker
area is small, with the passage of time will produce a lot of dust,
resulting in the guardrail reflective warning effect getting worse.
In order to improve the safety of passing vehicles, the driver's
alertness, especially accident-prone areas and small radius ramps
vehicle driving safety. Rotating collision barrier after more than
a year of pilot application, from the traffic police, road
administration and the feedback from the barrier department, the
pilot section of traffic accident frequency significantly reduced,
the degree of damage caused by the accident also significantly
reduced.
Rotating anti-collision guardrail principle of work
Rotating collision barrier to change the traditional guardrail
single side of the waveform beam type, using a column double side
guardrail, that is, in the column on both sides of the installation
of waveform beam guardrail. The middle of the installation of
rotating anti-collision barrel, in the rotating barrel of the upper
and lower are installed waveform guardrail, so that a column will
be installed on the four-waveform beam, that is, "a column of four
columns" strengthen the type of guardrail. This enhanced guardrail
device can effectively prevent cars from crossing the guardrail out
of the road, and the rotating barrel posted on the two eye-catching
reflective strips (circle), can maximize the warning to drivers and
passengers to pay attention to safety, effectively reduce the rate
of traffic accidents. When the vehicle hits the guardrail, first
will collide with the rotating barrel contact, then, the vehicle
with the rotating barrel rotation, driving speed gradually
decreased, at the same time, the impact energy generated by the
collision is rotating barrel significantly absorbed, can
effectively reduce the consequences of traffic accidents.
The main components of rotating collision avoidance guardrail
The rotating collision barrier is mainly composed of columns, swing
circles, rotating barrels, beams, waveform beams, reflective strips
and the corresponding connecting parts. The rotating barrel is made
of ethylene vinyl acetate copolymer (EVA) and polyurethane
composite material, which is elastic, anti-collision and
wear-resistant and can effectively avoid the rotating barrel from
being broken by impact. At the same time, the good recovery force
of the rotating bucket also ensures that it can be quickly restored
to its original state after a serious impact. In addition, the
color of the rotating barrel is bright, white, yellow, orange, etc.
The barrel was chosen by Suzhou Bypass Expressway Co., Ltd. is
orange, which has high brightness reflection effect and
eye-catching function, which can effectively improve the driver's
attention and reduce the accident rate, thus ensuring the safety of
the vehicle.
Construction process of rotating anti-collision guardrail
·Column installation
Use the pile driver to drive the column vertically into the road.
If the road base is particularly hard, the column can't go down,
use the drilling machine to punch the hole and then install the
column. After the verticality and elevation check of the column is
completed, the column will be backfilled and pounded with C20
concrete.
·U-frame installation
The two U-frames are fixed with M20×180mm hexagonal bolts on the
Φ20 counterbore of the lower part of the column. It should be noted
that the nuts need not be tightened for the later installation and
commissioning.
·Lower guardrail installation
First, along the U-slot will be M20 × 60mm half-round head waist
neck bolts with square pad buckle into, then, the guardrail first
and last two bolts and U-frame on the U-slot fixed, and then
install the other bolts.
·The installation of the gyratory ring
After the installation of the two lower guardrails, on the column
set on the swing ring.
·Installation of swing barrel
In each column on the set of a swing barrel, and then on the swing
barrel on the swing ring.
·The installation of the upper guardrail
The installation method is the same as the installation method of
the lower guardrail. First, along the U groove will be M20 × 60mm
half round head waist neck bolts with square pad buckle into, and
then, all the bolts on the guardrail will be inserted into the top
hole of the column, with nuts fixed tight.
·Between the guardrail connection
Use the connecting frame to connect the adjacent guardrail, after a
section of guardrail is installed, the connecting frame will be
inserted into one end of the guardrail and fixed, so that the next
section of the guardrail splices.
·Guardrail and the end of the connection
The end will be set into the guardrail, with M20 × 140mm bolts to
fix it.
·The installation of the end cover
After the above installation steps are completed, adjust the
guardrail line, tighten all the nuts, the end cover set on the
column can be fastened.
Product Parameters
| No. | Name | Specifications(mm) | Material |
| 1 | Roller | 345*490/350*510(Customized) | Polyurethane |
| 2 | Post | 140*2000*4.5(Customized) | Q235 |
| 3 | PVC Tube | 160*500*6.5(Customized) | PVC |
| 4 | Beam | 100*80*4.0 | Q235 |
| 5 | Rolling Circle | 182×145×6.0 | Polymer Ethylene |
| 6 | End Socket | 1300×230×4.0 | Q235 |
| 7 | Post Cap | 145×145 | Rubber |
| 8 | Bolt | M18*120 | Q235 |
| | M18*180 | Q235 |
| | M18*80 | Q235 |
| 9 | Nut | M20 | Q235 |
| Item | Specifications |
| Apparent Density (KG/m³) | ≥125 |
| Tensile Strength(MPa) | ≥1.15 |
| Elongation(%) | ≥320 |
| Compression Permanent Distortion (%) | ≥38 |
| Resilience(%) | ≥72 |
