Hot-dip galvanized guardrails were installed twice on the expressway to plan vehicles to drive along the route. In coastal areas with warm climates, salty air deposits corrosiveness on the barrier. In the northern climate, the degree of abrasion of snow will corrode the environmental protection layer. When exposed to these environments, the guardrail may cause the joint to quickly corrode to the barrier layer within a few years.

 

   Due to the different thicknesses of hot-dip galvanized guardrails larger than an obvious specification, weathering steel can be used on the back of the steel back track.

 

   Try to use zinc foil at the overlap. Electrolysis of zinc can slow down corrosion. Using thicker parts can extend the service life, but maintenance should still include inspection of parts and joints. The joints will also be damaged by the cross-sectional data at the urban rail joints. The pendulum test has been carried out on the highly weathered obstacle rails using the traditional galvanized extrusion type joints, and can pass the continuous collision system test.

 

   For damaged hot-dip galvanized guardrail panels, it is best to use the same type of pillar as the existing facility, but if the longer part needs to be repaired, the pillar can be replaced. Some company-specific guardrails and columns can be interchanged with general-purpose columns, and there may be differences in performance between steel column systems and wooden columns for system development. The protective plate is a device that safely redirects, slows down or stops the wrong vehicle and prevents more serious collisions or vehicles from entering the work area. It is a development of a light channelized device that can warn the driver of a dangerous environmental condition and provide almost no resistance during an impact to protect itself from the wrong driver.

 

   The test vehicle may not be able to cross or jump over obstacles. After installation, it is dangerous for the public if it is only connected end-to-end without connecting hardware. The guardrail must have orange and white reflective stripes, and for some large engineering plastic devices that accept ballast, the cultural impact system must be tested at a speed of 100 km/h by using these small business cars to ensure that there will be no impact on the impact. The safety of the occupants of the vehicle caused injuries to students.

 

   Galvanized hot plate guardrails are connected end-to-end to form a guardrail wall, which can be used to control pedestrian traffic, guide vehicles through chaotic work areas, prevent the use of intermediate intersections, and provide more descriptions, usually only a row of cones Body or drum. In the event of a vehicle crash, the design of some enterprises' longitudinal channelization devices can simultaneously add continuous rails through information or convert them into anti-collision barriers through the company's internal steel frame.

   Some guardrails are provided with internal or external railings or frame guardrails. Without these external rails or internal steel frames, these steel frames do not have the ability to guide vehicles, and the deflection of obstacles should be carefully considered. The precast concrete guardrail has low deflection, and it can also be fixed in place to strictly limit the impact of deflection.