CN106948294B - Wave form sandwich highway protective structure - Google Patents

Abstract

The invention relates to a corrugated sandwich road protection structure, which comprises a spiral column, a sandwich corrugated plate, a main corrugated conical tube assembly, and a secondary corrugated conical tube component. The upper part rotates on the axis to form a twisted surface. The main corrugated conical tube assembly and the secondary corrugated conical tube assembly are connected to the upper part of the sandwich corrugated plate and the spiral column. The main corrugated conical tube assembly is obliquely connected to the sandwich corrugated plate. The sandwich corrugated plates are connected vertically. The invention solves the problems of lack of crashworthiness, single form of energy absorption, poor buffering effect, and inability to effectively prevent vehicles from rushing out of the road surface in general highway and expressway guardrails. Strong collision, high adaptability to collision angle; simple installation, convenient replacement, high sustainable use and other beneficial effects.

Description

A corrugated sandwich road protection structure

technical field

The invention relates to the technical field of road protection, in particular to a corrugated sandwich road protection structure.

Background technique

In recent years, the issue of road protection has become increasingly important with the increase in the number of vehicles. The design of road protection has become an indispensable part of road construction, especially the protection of highways. Driving normally in the established safe route, and absorbing the collision energy in the traffic accident when the accident occurs, the hazards of the traffic accident can be minimized, and the driver's life and property safety can be effectively protected.

Highway protection devices are particularly common in the design of highway guardrails. The additional guardrails on both sides of the road can effectively prevent vehicles from driving out of the road after a traffic accident and causing secondary injuries to passengers.

However, the existing guardrails have a single form of energy absorption, poor adaptability to collision angles, and no high-efficiency energy absorption characteristics. Under normal conditions, the existing guardrails cannot effectively block the vehicles, and the instantaneous impact force is relatively large. The accident vehicle will often drill, straddle, overturn or even break the guardrails, and the protective effect of the guardrails is very limited.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a highway guardrail with a novel arc sandwich panel structure with high-efficiency energy-absorbing devices, aiming to solve the problem of insufficient crashworthiness and energy-absorbing performance of general highway and expressway guardrails. The form is single, the cushioning effect is poor, and it cannot effectively prevent the vehicle from rushing out of the road.

Technical scheme of the present invention is as follows:

A corrugated sandwich road protection structure, comprising a spiral column, a sandwich corrugated plate, a main corrugated cone tube assembly, and a secondary corrugated cone tube component, the sandwich corrugated plate includes a corrugated shell, fillers arranged in the corrugated shell, the upper part of the spiral column is The axis rotates to form a twisted surface. The main corrugated cone tube assembly and the auxiliary corrugated cone tube assembly are connected to the upper part of the sandwich corrugated plate and the spiral column. Connect vertically.

Preferably, the upper part of the spiral column rotates 90° with the axis to form a twisted surface, and the main bellows assembly is obliquely connected with the sandwich wave plate at an angle of 45° towards the direction of the vehicle.

Preferably, the lower part of the spiral column is a straight column, the bottom end of the straight column is provided with a base, and several supporting ribs are provided between the base and the straight column.

Preferably, the spiral column is a hollow structure, and the top end of the spiral three-dimensional is provided with a top cover.

Preferably, the corrugated shell of the sandwich corrugated plate extends in the width direction to form an undulating wave structure, and the main corrugated conical tube assembly and the secondary corrugated conical tube assembly are respectively connected to the outer bottom surface of the concave surface of the corrugated shell.

Preferably, the upper end of the corrugated casing is an upward inclined surface extending toward the road side, and the lower end of the corrugated casing is a downward inclined surface extending toward the road side.

Preferably, the main corrugated cone assembly is located in the middle of the sandwich corrugated plate in the height direction, and the secondary bellows cone assembly is arranged above or below the main bellows cone assembly in the height direction.

Preferably, the main corrugated tapered pipe assembly includes a main corrugated tapered pipe and a main connector, and the secondary corrugated tapered pipe assembly includes a secondary corrugated tapered pipe and a secondary connecting plate, the main connecting head and the secondary connecting plate are connected to the sandwich corrugated plate through a connector, One end of the main corrugated conical pipe and the auxiliary corrugated conical pipe are respectively connected with the upper part of the helical solid.

Preferably, the main connector is a hollow right-angled triangular prism.

The beneficial effects of the present invention are as follows:

1. Efficient energy absorption characteristics.

The sandwich corrugated plate is a sandwich-reinforced structure with good crashworthiness mechanical properties. The internal filling can be filled with aluminum alloy foam, rubber and other filling materials. Filled materials such as aluminum alloy foam and rubber can be sawed, milled and drilled. Although they are light in weight, they have a large specific energy absorption, and can fully exert high crashworthiness with the corrugated shell of the sandwich corrugated board. The main corrugated conical tube assembly and the auxiliary corrugated conical tube assembly are mainly composed of conical tubes with a certain taper and accessories. Among them, the conical tube has more superior stability and impact angle adaptation than the round straight tube in terms of multi-angle impact. properties, can absorb more collision energy. At the same time, compared with straight pipes, corrugated pipes can absorb energy through regular plastic folding deformation more reliably, efficiently and stably when impacted, which can effectively reduce the instantaneous collision force, which is conducive to improving material utilization and energy absorption capacity. The invention combines the design concept of the crashworthiness of the sandwich corrugated plate and the corrugated cone tube into the design of the guardrail, and produces a combined energy absorption form during the collision occurrence stage, which effectively highlights the crashworthiness of the guardrail structure proposed by the present invention. Advantages in terms of efficient energy absorption.

2. Safety, reliability, high stability, strong crashworthiness, and high adaptability to collision angles.

The conical pipes of the main corrugated conical pipe assembly and the auxiliary corrugated conical pipe assembly are of corrugated structure. During the collision of vehicles, most of them collide obliquely at an angle. The corrugated pipe body is more collapsed than the straight pipe when the collision occurs Stable, not easy to lose stability under multi-angle high-speed impact conditions, ensuring the effectiveness of the mechanical resistance of the overall structure of the guardrail. The sandwich corrugated plate is a corrugated structure, which prevents the ultimate failure stress of each point in the surface of the corrugated shell from reaching the maximum as soon as possible when a collision occurs, and effectively curbs the severe deformation and overall collapse of the corrugated shell. The protruding tilting structure at the upper and lower ends of the corrugated shell can also effectively prevent secondary damage such as drilling, straddling, and overturning of the accident vehicle. In the event of a collision, the convex surface of the corrugated panel facing the car can collide with the accident vehicle first, which can produce a better buffer effect. At the same time, the wave structure can also improve the bending resistance of the sandwich corrugated panel, preventing secondary accidents caused by excessive deformation . The spiral column is buried in the foundation. The spiral column is a hollow cylinder, and the upper half of the cylinder rotates 90° with the axis, showing a twisted shape. During the collision process, the spiral column plays the main role of resisting support and mainly bears the bending moment. The twisted shape column has better bending moment bearing capacity in the angle collision, and the ribs on the base can also improve its bending resistance to prevent accidents The vehicle smashes through the pillar and rushes out of the road, causing secondary damage. The spiral structure of the spiral column can make the main corrugated cone tube assembly installed in the middle of the spiral part on the upper part of the spiral column face the direction of the vehicle at 45°. Collapse, more reliable energy absorption, and give full play to the high crashworthiness of the corrugated cone. During implementation, the present invention can also be provided with two secondary corrugated cone components, which are connected perpendicular to the sandwich corrugated plate, that is, perpendicular to the direction of the road surface, and form a stable and reliable triangular impact resistance range with the main corrugated cone component, plus the main corrugated cone The tapered design of the pipe assembly and the auxiliary corrugated cone pipe assembly can greatly improve the adaptability of the collision angle.

3. Simple installation, convenient replacement and high sustainable usability.

The spiral column is fixed on the ground on both sides of the road, and part of the bottom is buried in the foundation, which is convenient for implementation. The joints of the main corrugated tapered pipe assembly, the secondary corrugated tapered pipe assembly and the sandwich corrugated plate are provided with matching joints. The joints are composed of bolts, nuts and curved gaskets, which are easy to assemble and disassemble. Among them, the end of the main corrugated cone tube assembly and the corrugated cone tube assembly in the secondary corrugated cone tube assembly is provided with a connecting plate that matches the size of the corrugated cone tube. The connecting plate is conducive to fixing the corrugated cone tube assembly on the sandwich corrugated plate at a special angle The position of the wave structure. During implementation, the corrugated casing of the sandwich corrugated plate, the main corrugated tapered pipe assembly, the secondary corrugated tapered pipe assembly, and the connectors can be made of aluminum alloy, which has strong corrosion resistance. In addition, the top cover of the spiral column can effectively prevent rainwater from entering the spiral column body and prevent rainwater erosion.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation of spiral column;

Fig. 3 is a sectional view of a sandwich corrugated plate;

Fig. 4 is a structural schematic diagram of the main corrugated tapered pipe assembly;

Fig. 5 is a structural schematic diagram of a secondary corrugated tapered pipe assembly;

In the figure: 1 is the spiral column, 2 is the main corrugated tapered pipe assembly, 3 is the auxiliary corrugated tapered pipe assembly, 4 is the sandwich corrugated plate, 5 is the connecting piece, 6 is the top cover, 7 is the supporting rib, 8 is the base, 9 is the main corrugated conical tube, 10 is the main connector, 11 is the auxiliary connecting plate, 12 is the secondary corrugated conical tube, 13 is the filler, and 14 is the corrugated shell.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

In order to solve the deficiencies in the prior art, such as insufficient performance of crashworthiness, single form of energy absorption, poor buffering effect, and inability to effectively prevent vehicles from rushing out of the road, the present invention provides a wave-shaped sandwich road protection structure, as shown in Figure 1, including Spiral column 1, sandwich corrugated plate 4, main corrugated conical tube assembly 2, auxiliary corrugated conical tube assembly 3, wherein the spiral column 1 and sandwich corrugated plate 4 are assembled through the main corrugated conical tube assembly 2 and the secondary corrugated conical tube assembly 3 connect.

As shown in Figure 2, the upper part of the spiral column 1 rotates on the axis to form a twisted surface, the main corrugated cone assembly 2 and the secondary corrugated cone assembly 3 are connected to the sandwich corrugated plate 4 and the upper part of the spiral column 1, the main corrugated cone assembly 2 is obliquely connected with the sandwich corrugated plate 4, and the secondary corrugated tapered pipe assembly 3 is vertically connected with the sandwich corrugated plate 4. The lower part of the spiral column 1 is a straight column, and a base 8 is arranged at the bottom of the straight column, and several supporting ribs 7 are arranged between the base 8 and the straight column.

During implementation, the spiral column 1 is fixed on the ground on both sides of the road, a part of the bottom is buried in the foundation, the base 8 is fixed on the ground, and the supporting ribs 7 play a certain anti-deformation effect on the spiral three-dimensional. The spiral column 1 is a cylinder with a hollow structure, and the upper part of the spiral column 1 rotates 90° with the axis to form a twisted surface, so as to facilitate the connection with the main bellows cone assembly 2 and the auxiliary bellows cone assembly 3 by welding, so that the main bellows assembly can be It is obliquely connected with the sandwich corrugated plate 4 towards the direction that the vehicle is coming at an angle of 45°. When an accident vehicle collides with the protective barrier, the main bellows assembly can more accurately and efficiently play the role of collapse energy absorption. The top of the spiral column 1 is provided with a top cover 6 with matching dimensions to prevent rainwater from entering the column in rainy days and causing corrosion.

As shown in FIG. 3 , the sandwich corrugated board includes a corrugated shell 14 and a filler 13 disposed in the corrugated shell 14 . In this embodiment, the corrugated shell 14 is made of aluminum alloy, and the filler 13 may be made of filling materials such as aluminum foam. The corrugated shell 14 has a certain length and extends in the width direction to form an undulating wave structure. The main corrugated tapered tube assembly 2 and the secondary corrugated tapered tube assembly 3 are respectively connected to the outer bottom surface of the concave surface of the corrugated shell 14 . The main corrugated conical tube assembly 2 is located in the middle of the sandwich corrugated plate 4 in the height direction, and the secondary corrugated conical tube assembly 3 is arranged above or below the main corrugated conical tube assembly 2 in the height direction.

In this embodiment, the corrugated shell 14 is provided with two convex surfaces and three concave surfaces viewed from the side facing the road, and the three concave surfaces are connected to two secondary conical corrugated pipe assemblies 3 and one main conical corrugated pipe assembly 2 through a connecting piece 5 The connection makes the convex surface contact with the accident vehicle at the first time, and better exerts the buffering and energy-absorbing effect of the corrugated plate 4.

Simultaneously, the upper end of corrugated casing 14 is the upper inclined surface that extends toward the road side, and the lower end of corrugated casing 14 is the downward inclined surface that extends toward the road side, respectively forms the tilting structure, can effectively prevent that accident vehicle takes place to drill, Secondary injuries such as straddling and overturning.

As shown in Fig. 4 and Fig. 5, the main corrugated conical tube assembly 2 and the secondary corrugated conical tube assembly 3 are formed by welding the corrugated conical tubes and matching fittings to form independent components. The main corrugated tapered pipe assembly 2 includes the main corrugated tapered pipe 9 and the main connecting head 10. The secondary corrugated tapered pipe assembly 3 includes the secondary corrugated tapered pipe 12 and the secondary connecting plate 11. Both the main connecting head 10 and the secondary connecting plate 11 pass through the connecting piece 5 Connected with the sandwich corrugated plate 4, one end of the main corrugated conical tube 9 and the secondary corrugated conical tube 12 is respectively connected with the upper part of the spiral three-dimensional.

In this embodiment, one main corrugated tapered pipe assembly 2, two secondary corrugated tapered pipe assemblies 3, the secondary corrugated tapered pipe assembly 3, the main corrugated tapered pipe assembly 2, and the secondary corrugated tapered pipe assembly 3 are arranged up and down in sequence and installed on the spiral column The upper, middle and lower positions of the upper helical part of 1. The main corrugated tapered pipe assembly 2 and the secondary corrugated tapered pipe assembly 3 are respectively connected to the concave surface of the middle and both ends of the corrugated shell 14 through the connecting piece 5, effectively connecting the sandwich corrugated plate 4 with the spiral column 1, and the sandwich corrugated plate 4 is removed. Arrived a very good supporting role.

The connecting piece 5 includes bolts, nuts, screws and curved gaskets. The main function of the connecting piece 5 is to reliably connect the sandwich corrugated plate 4 with the main corrugated tapered tube assembly 2 and the secondary corrugated tapered tube assembly 3 .

Example

Part of the spiral column 1 is buried in the foundation, the height of the spiral column 1 is 950mm, the height of the spiral part of the upper part of the spiral column 1 is 620mm, the spiral is twisted 90 degrees, the wall thickness is 10mm, the wall thickness of the top cover 6 is 10mm, the thickness of the base 8 is 20mm, and the diameter 350mm, the support ribs 7 thickness 5mm around. The present invention is a unit of several repeating units of the highway guardrail. During implementation, each unit has two spiral columns 1 with a distance of 1058 mm.

The main corrugated cone assembly 2 includes the main corrugated cone 9 and the main connector 10, wherein the main corrugated cone 9 has a vertical height of 200 mm, a wall thickness of 1.5 mm, and a total of 20 cycles of sine waves with an amplitude of 1.5 mm and a bottom The end diameter is 110mm and the taper is 7 degrees. The main connector 10 is a hollow right-angled triangular prism with a height of 120mm and a wall thickness of 5mm. The cross-section of the prism has a triangular hypotenuse with a side length of 120mm. Two M16 through holes with an interval of 50mm are drilled on the connecting surface.

The secondary corrugated conical tube assembly 3 includes a secondary corrugated conical tube 12 and a secondary connecting plate 11, wherein the secondary corrugated conical tube 12 has a wall thickness of 1.5 mm, a total of 8 cycles of sine waves, an amplitude of 1 mm, a bottom diameter of 90 mm, and a taper of 3 Spend. The secondary connecting plate 11 has a thickness of 10mm and a side length of 80mm, and two M16 threaded through holes with an interval of 50mm are drilled on the connecting surface.

The top ends of the main corrugated conical tube assembly 2 and the auxiliary corrugated conical tube assembly 3 are respectively connected to the middle part of the sandwich corrugated plate 4 and the concave surfaces at both ends through the connecting piece 5 and standard M16 nuts, screws and bolts.

The sandwich corrugated plate 4 includes a corrugated shell 14 and a filler 13. The length of the sandwich corrugated plate 4 is 1500 mm. The sandwich corrugated plate 4 has two convex surfaces and three concave surfaces, and the wall thickness is 3 mm. The three concave surfaces and two secondary corrugated tapered pipe assemblies 3 It is connected with a main corrugated tapered pipe assembly 2 through the connecting piece 5, so that the convex surface can contact the accident vehicle at the first time, and the buffering and energy-absorbing effect of the sandwich corrugated plate 4 can be better played. The lifting structure can also effectively prevent secondary injuries such as drilling, straddling, and overturning of the accident vehicle. The filler 13 involved is aluminum foam with a thickness of 30mm and a density of 0.3g/cm3, and the corrugated shell 14 is made of aluminum alloy stamping.

The above-mentioned embodiments are only used to illustrate the present invention, but not to limit the present invention. As long as it is based on the technical spirit of the present invention, changes and modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims (9)

1. A corrugated sandwich road protection structure, characterized in that, comprises a spiral column, a sandwich corrugated plate, a main corrugated tapered tube assembly, a secondary corrugated tapered tube assembly, and the sandwich corrugated plate includes a corrugated shell, a filler that is located in the corrugated shell , the corrugated shell is provided with two convex surfaces and three concave surfaces, and the three concave surfaces are connected with two secondary corrugated cone tube assemblies and a main corrugated cone tube assembly through connecting pieces, the upper part of the spiral column rotates with the axis to form a twisted surface, and the main corrugated cone Both the pipe assembly and the auxiliary corrugated tapered pipe assembly are connected to the upper part of the sandwich corrugated plate and the spiral column, the main corrugated tapered pipe assembly is obliquely connected to the sandwich corrugated plate, and the secondary corrugated tapered pipe assembly is vertically connected to the sandwich corrugated plate. 2. The corrugated sandwich road protection structure according to claim 1, characterized in that the upper part of the spiral column rotates 90° with the axis to form a twisted surface, and the main bellows assembly faces the direction of the vehicle at an angle of 45° to the direction of the sandwich waveform The boards are connected obliquely. 3. The corrugated sandwich road protection structure according to claim 1, characterized in that the lower part of the spiral column is a straight column, the bottom of the straight column is provided with a base, and a number of supporting ribs are provided between the base and the straight column. 4. The corrugated sandwich road protection structure according to any one of claims 1 to 3, characterized in that the spiral column is a hollow structure, and the top end of the spiral three-dimensional is provided with a top cover. 5. The protective structure for a sandwich road according to claim 1, characterized in that, the corrugated shell of the sandwich corrugated plate extends in the width direction to form an undulating wave structure, and the main corrugated conical tube assembly and the secondary corrugated conical tube assembly are respectively connected to the corrugated corrugated conical tube assembly. The outer bottom surface of the concave surface of the corrugated structure of the shell. 6 . The corrugated sandwich road protection structure according to claim 5 , wherein the upper end of the corrugated shell is an upwardly inclined surface extending toward the road side, and the lower end of the corrugated shell is a downwardly inclined surface extending toward the road side. 7. The corrugated sandwich road protection structure according to claim 5, characterized in that the main corrugated cone assembly is located in the middle of the sandwich corrugated plate in the height direction, and the secondary corrugated cone assembly is arranged on the height direction of the main corrugated cone above or below the tube assembly. 8. The corrugated sandwich road protection structure according to claim 1, wherein the main corrugated cone assembly includes a main corrugated cone and a main connector, the secondary corrugated cone assembly includes a secondary corrugated cone, a secondary connecting plate, and the main Both the connecting head and the auxiliary connecting plate are connected to the sandwich corrugated plate through the connecting piece, and one end of the main corrugated tapered pipe and the auxiliary corrugated tapered pipe is respectively connected with the upper part of the spiral three-dimensional. 9. The corrugated sandwich road protection structure according to claim 8, characterized in that the main connector is a hollow right-angled triangular prism.

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