Roller Safety Barrier Highway Crash Barrier Highway Median Barriers
Road Safety Barrier Systems
Introduction
The rotating crash barrier is composed of rotating barrel,
crossbeam, column, reflective strip, casing, swing ring and
connecting parts. When the rotating collision barrier is out of
control vehicle impact, its rotating barrel in the impact force
rotating, can slow down the lateral impact speed of the
out-of-control vehicle, and drive the out-of-control vehicle back
to the correct direction of travel. The rotating collision barrier
can not only be used as road side guardrail, central divider
guardrail, but also as a small bridge, channel, bridge guardrail of
open culvert, its guiding performance, buffering performance
compared to traditional guardrail products have a breakthrough
improvement. In addition, the rotating collision barrier has
all-weather guidance performance and reduced transverse width
requirements, has the maximum buffer deformation length of flexible
guardrail and has the transverse deformation characteristics of
semi-rigid guardrail. The results of the crash tests show that the
RG-SA and RG-SB-2 rotating barriers have a SB (SBm) crashworthiness
rating. The comparison with other guardrail crash test results
shows that the rotating guardrail has advantages in occupant
acceleration, exit angle, exit speed and lateral deformation index.
Rotary guardrails rotary guardrail Features
Environmental performance
The rotary guardrail recycles waste rubber and plastic materials,
in line with our basic policy of resource conservation and
environmental friendliness. The material of the rotary bucket is a
blend of EVA and polyethylene. Polyurethane EVA (rubber and
plastic) is an emerging organic polymer material that is widely
used in many areas of the national economy because of its excellent
performance. The general advantages of polyurethane materials: a
wide range of hardness (Shore A15 ~ Shore D90) in the same hardness
than other elastomers, high wear resistance, high impact
resistance, a wide range of rebound, compression 60% response rate
of 100%. Suitable for high frequency flexing applications, good low
temperature flexibility, special formulation, stable at 140°C,
unaffected by ozone erosion, mould resistant, radiation resistant,
corrosion resistant, high temperature resistant, low abrasion, does
not absorb rainwater. It can be processed on standard equipment and
can be bonded to wood, metal and most materials.
Noise reduction effect
It also has a noise reduction effect and is widely resistant to
oil, grease and chemicals. The new material is used to produce
bumper-to-bumper facilities that are highly resilient and have a
high service life, tested to 30-50 years, giving a very good
overall price/performance ratio.
The safety of personnel and vehicles is guaranteed
Due to the scientific impact absorption mode provided by the rotor
guardrail, the instantaneous impact energy is transformed into
rotational and frictional energy by means of rotational friction,
effectively reducing the degree of damage to the vehicle. In
addition, through the rotational movement to change the vehicle
rebound angle, can regain the normal driving direction of the car,
to avoid the occurrence of secondary accidents, the vehicle driver
and passenger life safety can also be guaranteed. For a long time,
China's highway guardrail form has been dominated by waveform beam
guardrail, "elastic rotor guardrail" a change in the past
monotonous form. Traditional waveform guardrail cannot solve the
friction between the vehicle and the guardrail, causing secondary
injury is difficult to avoid. The key is "elastic rotor guardrail"
effectively avoids the actual running speed of the highway, traffic
density and other reasons, as well as driver fatigue, snow and ice
and other man-made or natural factors lead to the vehicle deviated
from the normal driving lane, into the side of the road or road
central isolation belt traffic accidents, while reducing the
secondary injury caused by the possibility of causing secondary
injuries is reduced, minimising injuries from accidents.
Rotary guardrails rotary guardrail Application prospects
Highways
Facts prove that researchers for all kinds of high-risk road
development research rotary guardrail, applied to the highway side
guardrail, central divider guardrail, bridge guardrail, overpass
guardrail, car branch road, tunnel, toll station transition section
and other parts, so that the accident vehicle forward direction is
corrected, so as to avoid the accident vehicle appears lateral
spin, roll over and other conditions lead to the normal running of
the vehicle collision has achieved a better The effect.
The necessity of ordinary trunk highway application
Arterial highway mileage is much higher than the highway mileage,
route technical indicators are often lower than the highway,
reflected in the road round curve radius, high fill roadbed, high
fill bridge head, mountainous cliff sections, etc.. However,
according to different road grades, the design speed is generally
in the range of 60, 80 and 100km/h, then the corresponding various
technical indicators are lower than the highway. For example, the
radius of the circular curve, while the actual operating speed is
often more than the design speed, especially at night, overloading
phenomenon is serious, once the collision, the vehicle itself
inertia is very large, inevitably resulting in the destruction of
the car, the safety risks are particularly prominent.
