CN106906768A - The administering method of the husky area's high grade highway pavement sand based on guard bar structure adjustment - Google Patents

Abstract

The present invention relates to a kind of administering method of the husky area's high grade highway pavement sand based on guard bar structure adjustment, the device that the method is related to is made up of vertical columns, reflective membrane, cable and reflectance profile mark.Show through wind tunnel experimental results, Cable Barrier is small to flow perturbation in the method for the invention, ground does not produce sand.Cable pastes reflective membrane in colour or with noctilucence function, on cable vertical columns, fixes reflective or solar energy luminous delineator by spacing on cable, these measures compensate for the defect of conventional Cable Barrier sight line guided bone difference, it may have improve the effect with aesthetic road landscape.The invention can solve the road surface sand problem of current sand area high-grade highway, promote the transport development development of husky area, can not only apply and wind sandy land, it can also be used to wind and snow area and scenic spot.

Description

Control method of road area sand on high-grade highway in sandy area based on guardrail structure adjustment

technical field

The invention relates to the optimization of road safety facilities, in particular to a method for controlling road area sand of high-grade roads in sandy areas based on guardrail structure adjustment.

Background technique

Roads in sandy areas are generally equipped with a sand control system, but the sand control system cannot completely intercept the sand carried by the passing wind and sand flow, and there will always be a small amount of wind and sand that will still be transported to the road surface. Because the surface of general roads is relatively smooth, wind and sand flows can pass through smoothly, and a large amount of sand will not form on the road surface. However, according to the investigation of many first-class roads and expressways that have been built in my country's sandy areas, it is found that although the road surface is smooth, there are still different degrees of sand accumulation on the road surface, which will cause great harm to fast-moving vehicles, tire slippage, and even cause serious accidents. Traffic accidents such as rollovers seriously affect traffic safety; in strong sand and dust weather, a large amount of sand accumulates on the road surface, and traffic is interrupted, requiring large machinery to rush through. Road area sand has become an important problem that plagues the operation and maintenance of high-grade highways in sandy areas.

A comprehensive analysis shows that the road area sand problem of high-grade highways is not only related to factors such as incomplete sand control system construction and large road width, but also has a lot to do with road ancillary facilities. Guardrails (including roadside guardrails and central barrier guardrails, and corrugated plate guardrails are often used in my country) and ancillary facilities such as anti-glare shading sheets are set up on the roadbed of first-class roads and expressways. The analysis of wind tunnel experiments shows that the guardrail decelerates the flow field near the surface of the subgrade due to strong disturbance, and the wind-sand flow carries sand and unloads and accumulates on the road surface. It can be seen that the road ancillary facilities normally used in other areas are not completely suitable for roads in sandy areas.

Ancillary safety facilities are also an indispensable and important part of roads in sandy areas, but their form must be compatible with surface wind and sand activities in sandy areas. Therefore, the key to the prevention and control of sand damage on high-grade highway pavement in sandy areas is to change the form of safety facilities to minimize the disturbance and blockage of the wind-sand flow field.

The corrugated plate guardrail is a semi-rigid guardrail with a beam structure fixed by pillars. It has a certain rigidity and toughness. It receives the impact energy through the bending deformation and tension of the guardrail beam to resist the collision of vehicles and reduce traffic accidents. the severity of the accident. The deformed and damaged parts of the beam are easy to replace, and the corrugated plate guardrail has a beautiful appearance and a good line of sight guidance. Therefore, the use of corrugated plate guardrails is very common, both as roadside guardrails and as central barrier guardrails. The corrugated plate has a width of 31cm (double wave) and 50.6cm (three waves). It is dense and airtight, and it greatly blocks the airflow, which is easy to cause snow and sand on the road.

The concrete guardrail is a rigid guardrail with a wall-like structure with a certain cross-sectional shape, which relies on the car's climbing, deformation and friction to receive the collision energy. Cement concrete guardrails are not deformed during collisions, are hardly damaged, and have low maintenance costs. They are generally used in environments that strictly prevent vehicles from overtaking, such as viaducts, deep ditches, etc., and are used as both roadside guardrails and central isolation With guardrail. Concrete guardrails are generally higher than 1m in height, dense and airtight up and down, and greatly hinder airflow, which can easily cause snow and sand accumulation on the road, and also cause oppressive feeling for vehicles.

The cable guardrail is a kind of flexible guardrail constructed by several cables with initial tension applied to the columns. It mainly relies on the tensile stress of the cables to absorb the collision energy and resist the collision of the vehicle. Since the cable guardrail can produce large deformation and absorb a large amount of collision energy, it can greatly reduce the damage to the collision body. The cable can be self-repaired after collision and deformation without replacement, and has good coordination with the landscape, but it has poor line of sight guidance and complicated construction. At present, the scope of application is very limited, and it is mostly used for scenic roads. Relevant literature research shows that because the cable guardrail has little blockage to airflow, it is not easy to accumulate wind and snow flow on the road surface when it is used in snowy areas, which can reduce the workload of snow cleaning and improve the traffic capacity of vehicles in snowy weather.

In view of the above problems, the present invention mainly reduces the disturbance to the wind-sand flow field by changing the structure of the highway guardrail, and effectively prevents the road from accumulating sand on the premise of ensuring road safety, which can promote the optimization of expressway construction technology in sandy areas promote.

Contents of the invention

The purpose of the present invention is to provide a method for controlling sand on high-grade roads in sandy areas based on guardrail structure adjustment for the cause of sand formation in the current high-grade road area in sandy areas. , cables and reflective contour markers. The wind tunnel test results show that the cable guardrail in the method of the present invention has little disturbance to the air flow, and no sand accumulation occurs on the ground. The cables are colored or have the function of lighting at night, the reflective film is pasted on the cable fixing column, and the reflective or solar luminous outline markers are fixed on the cable at intervals. The role of landscape. The invention can solve the road area problem of high-grade highways in sandy areas and promote the development of traffic construction in sandy areas. It can be used not only in sandy areas, but also in snowy areas and scenic spots.

According to the invention, a method for controlling sand in the high-grade highway road area in sandy areas based on guardrail structure adjustment, the device involved in the method is composed of fixed columns, reflective film, cables and reflective contour markers, and the specific operations are carried out according to the following steps :

a. Set guardrail fixed columns (1) equidistantly along both sides of the high-grade road surface in the sandy area and along the central isolation belt of the highway, and paste reflective film (2) on the fixed columns (1) equidistantly, between the fixed columns (1) Cables (3) are arranged equidistantly up and down between them;

b. A reflective delineator (4) is installed on the cable (3), and the delineator distance is 4-12m.

The surface of the cable (3) is colored, and the reflective delineator (4) is a solar luminous delineator (4).

According to the control method of the high-grade highway road area sand in the sandy area based on the adjustment of the guardrail structure of the present invention, the specifications and layout methods of the traditional cable guardrails involved refer to the industry standard JTJ074-94 of the People's Republic of China "Design and Design of Highway Traffic Safety Facilities". Implementation of Construction Technical Specifications.

A method for controlling road area sand in high-grade highways in sandy areas based on guardrail structure adjustment according to the present invention, the method makes full use of the advantages of various existing guardrails and overcomes deficiencies to form sand control in high-grade road areas in sandy areas method. In the method of the present invention, a reflective film (2) is pasted on one side of the fixed column (1), so that the column acts as a contour mark at night; the surface of the cable (3) is colored and has a luminous function, which can increase the line of sight of the cable during the day and at night The guiding function can greatly improve and beautify the road conditions in the sandy area, and improve driving safety; the reflective delineator (4) is installed on the guardrail cable (3), which can increase the guiding function of the cable sight (especially at night).

The method of the invention is applicable to roadside guardrails and central isolation belt guardrails.

The present invention replaces the commonly used guardrails (concrete guardrails and corrugated plate guardrails) of high-grade highways with cable (3) guardrails, and forms a strengthening scheme for guardrail line-of-sight guiding functions, solves the problem of road area sand, not only meets the anti-collision level, but also improves And beautify the road conditions.

Description of drawings

Fig. 1 is a schematic diagram of the present invention.

detailed description

Example 1

a. Set guardrail fixed columns 1 at equal distances along both sides of the high-grade road surface in the sandy area and along the central isolation belt of the road, and paste reflective film 2 on the fixed columns 1 at equal distances, and use cables 3 to be arranged equidistantly up and down between the fixed columns 1 Fixed, the surface of the cable 3 is colored, and when it glows at night, one section is orange, one section is green, and one section is yellow, and the cycle changes;

b. The reflective contour markers 4 installed on the cable 3 are solar luminous contour markers, and the distance between the reflective contour markers 4 is 4m.

Example 2

a. Set guardrail fixed columns 1 equidistantly along both sides of the high-grade road surface in the sandy area and along the central isolation zone of the highway, and put reflective film 2 on the fixed columns 1 equidistantly, and use cables 3 to arrange equidistantly up and down between the fixed columns 1 Fixed, the surface of the cable 3 is colored, and when it glows at night, one section is orange, one section is green, and one section is yellow, and the cycle changes;

b. The reflective contour markers 4 installed on the cable 3 are solar luminous contour markers, and the distance between the reflective contour markers 4 is 5m.

Example 3

a. Set guardrail fixed columns 1 equidistantly along both sides of the high-grade road surface in the sandy area and along the central isolation zone of the highway, and put reflective film 2 on the fixed columns 1 equidistantly, and use cables 3 to arrange equidistantly up and down between the fixed columns 1 Fixed, the surface of the cable 3 is colored, and when it glows at night, one section is orange, one section is green, and one section is yellow, and the cycle changes;

b. The reflective contour markers 4 installed on the cable 3 are solar luminous contour markers, and the distance between the reflective contour markers 4 is 6m.

Example 4

a. Set guardrail fixed columns 1 equidistantly along both sides of the high-grade road surface in the sandy area and along the central isolation zone of the highway, and put reflective film 2 on the fixed columns 1 equidistantly, and use cables 3 to arrange equidistantly up and down between the fixed columns 1 Fixed, when glowing at night, the surface of cable 3 is green;

b. Reflective contour markers 4 are installed on the cable 3, and the distance between the reflective contour markers 4 is 10m.

Example 5

a. Set guardrail fixed columns 1 equidistantly along both sides of the high-grade road surface in the sandy area and along the central isolation zone of the highway, and put reflective film 2 on the fixed columns 1 equidistantly, and use cables 3 to arrange equidistantly up and down between the fixed columns 1 Fixed, the surface of the cable 3 is colored, and when it glows at night, one section is orange, one section is green, and one section is yellow, and the cycle changes;

b. The reflective contour markers 4 installed on the cable 3 are solar luminous contour markers, and the distance between the reflective contour markers 4 is 12m. The above examples are only specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto.

Claims (2)

1. A control method based on guardrail structure adjustment of high-grade road area sand in sandy areas, characterized in that the device involved in the method is made up of fixed columns, reflective film, cables and reflective contour marks, and the specific operations are carried out in the following steps : a. Set guardrail fixed columns (1) equidistantly along both sides of the high-grade road surface in the sandy area and along the central isolation belt of the highway, and paste reflective film (2) on the fixed columns (1) at equal distances, between the fixed columns (1) The cables (3) are arranged equidistantly up and down to fix them; b. A reflective delineator (4) is installed on the cable (3), and the delineator distance is 4-12m. 2. The method for controlling sand in the high-grade highway road area in sandy areas based on guardrail structure adjustment according to claim 1, characterized in that the surface of the cable (3) is colored, and the reflective delineator (4) is a solar luminous delineator.