The latest regulations of the Ministry of Transportation on the anti-collision level of corrugated road guardrails

At the end of 2017, the Ministry of Transport comprehensively revised the "Code for the design of road safety facilities". Based on the anti-collision levels of level, SB and SA, the anti-collision levels of HB and HA are added. The new specification clarifies that wave protection guardrails with different levels of anti-collision should be set according to the actual road situation.More specific, higher operability.
The new specification explains the protective energy corresponding to each anti-collision level of corrugated guardrail, among which the protective energy of level C corrugated guardrail is 40kJ, the protective energy of corrugated guardrail B and Bm is 70kJ, and the protective energy protective The energy of class A and Am corrugated guardrail is 160 kJ, the protection energy of SB and SBm level wave guardrail is 280 kJ, the protection energy of SA and SAm level wave guardrail is 400 kJ, the protection energy of SS and SSm level wave guardrail is 520 kJ, the protection energy of HB level wave guardrail is 640kJ, and the protection energy of wave guardrail of HA level The protective energy of the guard rail is 760kJ.
According to use experience, SS level corrugated guardrail can already meet the design requirements of most national highways for guardrails, but in some mainstream models, such as super large passenger cars (25t) and trucks large (40t, 55t) with high center of gravity Overturning or breaking of the guardrail by the vehicle will cause serious consequences to the bridge section, and HB and HA guardrails can play a better protection role.

FAQ

The role of highway guardrails and installation precautions

The road guardrail separates the traffic of motor vehicles, non-motor vehicles and pedestrians, and separates the road longitudinally in the section, so that motor vehicles, non-motor vehicles and pedestrians can travel in separate lanes, which improves the safety of road traffic and improves traffic order;

How does the road marking machine work?

Road markings are also called road markings, that is, lines, arrows, signs, etc. which we can see on the road every day to identify traffic information, and play a role in traffic control and guidance. Next, the editor will take you to understand how road marking is constructed and what should be paid attention to during construction.

Selection of shock pad type and application location

When selecting and designing the crash pad, the size of the crash pad should be in accordance with the site conditions. In the event of a frontal collision and side collision, it can effectively protect obstacles and cannot encroach on the free space of the road. The Crash Pad can choose different structural shapes and use methods according to the terrain conditions and the degree of injury that may be caused in the event of a collision accident. Most of the anti-collision pads used on national roads are circular anti-collision cylinders made of glass fiber reinforced plastic, combined anti-collision pillars and other products.

What are the classifications of marking machines?

Vehicle-mounted marking machine: In the form of a driving bracket, the front and rear of the driving body are equipped with machinery, which is used in large-scale projects and long-distance construction marking. Operators must understand the skills driving and driving walking, saving time and effort.

Scratching machine and its accessories.

Width of marking lines: The width of international road markings is 15 cm. Considering that the marking machine can be used in parking lots, residential areas and other places, it is necessary to purchase a marking machine with a width adjustment function, which will help to use reasonably and save paint. The general adjustable range is 5-15cm.

crash pad design