highway guardrail types

highway guardrail types introduce

There are many highway guardrail types. According to surface treatment, they are divided into two types: galvanized corrugated guardrail and galvanized plastic sprayed.

According to the grade of collision avoidance, it can be divided into class A and S. The S grade guardrail is an enhanced type. It is suitable for road sections which are especially dangerous. Commonly used roadside wave beam guardrail can be divided into five levels: B, A, SB, SA and SS according to the level of collision avoidance.

Highway guardrail is the main form of semi steel guardrail. It is a continuous structure with corrugated steel guardrail plates spliced together and supported by main columns. When vehicles collide, the corrugated steel guardrail has good impact resistance and absorbs energy, and it is not easy to be knocked down, and it can also play a good role in protecting vehicles and personnel.

The guardrail is an important part of the road safety facilities. Its main function is to prevent the vehicle from getting out of the road and through the central separation belt, thus reducing the severity of the accident. In order to prevent the vehicle from getting out of the road or breaking into the direction of the lane, it is necessary to require the guardrail to have enough mechanical strength to resist the collision of the vehicle and protect the personnel from the damage. The structural forms of guardrails mainly include semi rigid guardrails, rigid guardrails and flexible guardrails. Each form has its adaptability. At present, it is widely used as a semi rigid guardrail.

highway guardrail

The guardrail is an important part of the road safety facilities. Its main function is to prevent the vehicle from getting out of the road and through the central separation belt, thus reducing the severity of the accident. In order to prevent the vehicle from getting out of the road or breaking into the direction of the lane, it is necessary to require the guardrail to have enough mechanical strength to resist the collision of the vehicle and protect the personnel from the damage. The structural forms of guardrails mainly include semi rigid guardrails, rigid guardrails and flexible guardrails. Each form has its adaptability. At present, it is widely used as a semi rigid guardrail.

The concrete guardrail is a wall guardrail structure with a certain cross-section shape. It is a rigid guardrail. The concrete guardrail is made of cement, gravel, water and steel bar. The concrete guardrail formwork is an indispensable and important tool in the prefabrication process. It directly affects the quality of precast concrete and needs to check the size and quality of the steel formwork. The quality of the concrete base course affects the quality after installation, and the quality of the base should be checked according to the specifications. The appearance quality and geometric size of concrete guardrail must be tested.

The cable guardrail is a flexible guardrail twisted by wire rope. According to the location, two categories can be divided into the roadside and the central divider. The embedment conditions can be divided into two categories: buried in the road and concrete. The concrete foundation can not be inserted into the columns and the depth of the columns can not be guaranteed. The cable adopts 3X7 galvanized / right-handed structure with high strength and good corrosion resistance. The cable guardrail is composed of an end column, an intermediate end column, an intermediate column, a bracket, a cable anchor, and a fastener. The quality of cable guardrail should be examined in terms of corrosion resistance, material properties, geometric dimensions and appearance quality.

w beam guardrail

highway guardrail types

The main structural features of the prestressing force highway guardrail types are as follows: the main structure of the active guardrail consists of several steel tube trusses and two trusses, and the steel pipe truss is connected with hinges, and the steel pipe in the longitudinal beam steel pipe is applied with a prestressed steel strand. Each group of trusses is set up with two sleeves, and a steel tube column is connected with the pre buried casing. A universal wheel is set on the truss, and the truss is equipped with a support to install the anti glare plate.

This innovative form of guardrail has changed the weakness of all kinds of guardrails. The truss structure, the prestressed steel strand inside the cross beam steel pipe, the truss through the column and the buried casing are connected, and the three guarantees can improve the collision avoidance ability of the movable barrier and meet the requirements of the Am grade. The truss is connected by special hinges, and a highly adjustable universal wheel is set at the bottom of the truss, which ensures the flexibility of the movable barrier and can open the movable guardrail more conveniently and quickly. It can also better adjust the line of the movable guardrail. All components used for opening are handled by burglar prevention to avoid theft and random opening.

The channel steel movable guardrail is made of high strength steel by bending and welding. The surface is galvanized and sprayed, and it is not easy to rust, the quality is stable, and it is durable. After installation, it is sturdy and hard to damage. The color is black and yellow, and it is very eye-catching. It is suitable for any road, fork, toll booth and so on.

The folding and rotating mechanism of the movable guardrail body is made of standard double sleeve hinge, and the structure is simple and practical. Flexible rotation, folding without opening any parts, the 1 hands can be pushed directly, folding is convenient, it can be opened and closed quickly, which can meet the need of opening emergency.

road crash barrier

A special bearing structure is adopted for the end joint arm and the end fixed column, so that the capacity of the end guard is 360 degrees around the fixed axis, so that all the guardrails are opened, the effective width of the emergency opening is increased, and the amount of dredging is increased. At the same time, the guardrail body can also expand to the two sides of the road, forming a roadblock to adjust the flow and maintain the road. The guardrail can be adjusted to any angle if it is set up in toll gate Plaza. There are many functions of toll gate adjustment, lane changing, dredging and blocking.