CN111663439A - A beam-column aluminum alloy highway bridge guardrail - Google Patents

Abstract

The invention belongs to the field of highway traffic safety facilities, and relates to a beam-column aluminum alloy highway bridge guardrail. The upper inserting tenon is integrally formed and installed, the top of the lower column is integrally formed with a lower inserting tenon which is used in cooperation with the upper inserting tenon, and the inner side of the upper end of the lower column is provided with a lower inserting tenon which is used in cooperation with the upper inserting tenon. A beam is fixedly installed at the top of the upper column and at the joints of the upper mortise and the lower mortise. The safety protection ability of the guardrail is poor, and the protection effect of the out-of-control vehicles and personnel is poor.

Description

A beam-column aluminum alloy highway bridge guardrail

technical field

The invention belongs to the field of highway traffic safety facilities, and relates to a beam-column aluminum alloy highway bridge guardrail.

Background technique

In the national implementation of green highway construction, the Ministry of Communications has put forward guiding opinions on the recycling and utilization of waste materials, strengthening ecological protection and highlighting the safety life cycle cost. At present, the application of highway bridge guardrail materials in my country mostly adopts reinforced concrete wall guardrail and steel beam-column guardrail, and the central divider mostly adopts corrugated beam steel guardrail or combined guardrail. Nowadays, the aluminum body has entered thousands of households in our country. Compared with the aluminum body, the reinforced concrete and steel guardrails have excessive blocking functions and insufficient safety protection for the lives of the occupants.

As a highway guardrail material, the collision performance of the guardrail must be considered, and at the same time, the characteristics of recyclability, protection of the ecological environment and low life-cycle cost must be taken into account. In the design of highway guardrails, it is hoped that the design of the guardrail anti-collision structure is more reasonable, which can reduce the damage to the uncontrolled vehicles and personnel.

Although the anti-collision performance of the reinforced concrete wall guardrail is good, it hardly deforms after the collision. When the collision angle is large, the vehicle and personnel are seriously injured. In addition, the steel beam-column guardrail needs regular maintenance, and is prone to corrosion, which affects the appearance and the maintenance cost is high. The corrugated beam steel guardrail has low rigidity and limited safety protection capability.

In view of this, technicians in this field are committed to developing a beam-column aluminum alloy highway bridge guardrail, which is characterized by being made of large-section thin-walled hollow aluminum alloy extrusion profiles, which enhances the overall strength, rigidity and buffering of the guardrail. performance. And aluminum alloy is a green energy-saving material in the 21st century. It has the characteristics of light weight, high specific strength, excellent energy absorption performance, corrosion resistance and good extrusion formability, which can meet the requirements of national green highway construction for highway guardrail materials under the new situation. .

SUMMARY OF THE INVENTION

In view of this, the present invention provides a beam-column aluminum alloy highway bridge guardrail in order to solve the problems of poor safety protection capability and poor protection effect on out-of-control vehicles and personnel in the existing steel guardrail.

In order to achieve the above purpose, the present invention provides a beam-column aluminum alloy highway bridge guardrail, which includes a hollow upper column and a lower column that are mutually inserted into an arch shape. The upper inserting tenon is installed, the top of the lower column is integrally formed with a lower inserting tenon that is used in cooperation with the upper inserting tenon, and the inner side of the upper end of the lower column is provided with a lower inserting tenon. A beam is fixedly installed at the top of the upper column and at the connection between the upper and lower insertion tenon and groove.

Further, the beam includes an upper beam and a lower beam, the top of the upper column is integrally formed with an upper beam fixing seat for installing the upper beam, and the inner side of the lower insertion tongue groove is integrally formed with a lower beam fixing seat for fixing the lower beam.

Further, the upper beam fixing seat is provided with a first bolt hole for fixing the upper beam, a second bolt hole is provided on the upper insertion tenon on the inner side of the lower end of the upper column, and the lower insertion tongue groove is provided with a second bolt hole for use in coordination. And the third bolt hole for fixing the lower beam.

Further, an upper triangular reinforcing rib is installed in the inner cavity of the upper column, and a lower triangular reinforcing rib is installed in the inner cavity of the lower column.

Further, the bottom surface of the lower column is the column bottom plate, and the fourth bolt hole is provided on the column bottom plate to facilitate fixing the upper column and the lower column on the concrete base.

Further, the cross section of the beam is football or honeycomb shape.

Further, the upper insertion tongue groove and the lower insertion tongue groove are dovetail groove structures.

Further, the lower surface of the upper column is an inclined upper support seat, and the upper surface of the lower column is a lower support seat used in cooperation with the upper support seat.

The beneficial effects of the present invention are:

1. The beam-column aluminum alloy highway bridge guardrail disclosed in the present invention, the main components are made of special aluminum alloy extruded profiles, with light weight, high specific strength, excellent energy absorption performance, corrosion resistance and extrusion formability It has good characteristics and can meet the requirements of the national green highway construction for highway guardrail materials under the new situation. Aluminum alloy has strong corrosion resistance and long service life. The material is recyclable and has high value retention. The proportion of recycled and refined aluminum is high, and it can be used sustainably. When the bridge guardrail collides, the self-deformation of the large-section thin-walled hollow aluminum profile member of the guardrail can be used to absorb the collision energy and reduce the damage to the vehicle and the occupants. The density of aluminum alloy is 1/3 of that of steel, which can reduce the weight of the bridge and reduce the construction cost. The guardrail components are light and fast to install, which improves the construction and installation efficiency of the guardrail.

2. The beam-column aluminum alloy highway bridge guardrail disclosed in the present invention adopts the structural form of beam-column guardrail and concrete base. It has good permeability and can meet the needs of the surrounding landscape to a certain extent. And it is made of large-section thin-walled hollow aluminum alloy extruded profiles. It is installed and constructed by plugging and screwing. This kind of structural guardrail not only enhances the overall strength, rigidity and buffer performance of the guardrail, but also facilitates installation and improves Improve the efficiency of guardrail construction and installation.

3. In the beam-column aluminum alloy highway bridge guardrail disclosed in the present invention, the upper column and the lower column of the aluminum alloy guardrail are respectively provided with a plug-in groove and a plug-in tenon, and the two are mutually clamped by the plug-in connection to form a guardrail arch. Structure, the arched column structure enhances the overall flexural rigidity and flexural strength of the guardrail. The inner cavity of the column profile is provided with a triangular structure reinforcing rib. When the guardrail collides, the collision force can be evenly transmitted down and out to the adjacent parts along the internal reinforcing ribs, so that the positive and negative sides of the guardrail column are evenly stressed, and the impact force on the front side is buffered to the greatest extent.

Bolt holes connected with the base are arranged on the bottom plate of the column at the bottom end of the aluminum alloy lower column. The upper surface of the concrete base is embedded with stainless steel plate. During construction, the guardrail column bottom plate is placed on the stainless steel plate through pre-embedded anchor bolts to connect and fasten. The stainless steel plate not only enhances the rigidity and strength of the guardrail foundation, but also acts as an isolation to prevent the contact between the aluminum alloy and the concrete foundation from corroding.

Other advantages, objects, and features of the present invention will be set forth in the description that follows, and will be apparent to those skilled in the art based on a study of the following, to the extent that is taught in the practice of the present invention. The objectives and other advantages of the present invention may be realized and attained by the following description.

Description of drawings

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be preferably described in detail below with reference to the accompanying drawings, wherein:

Fig. 1 is the structural representation of beam-column aluminum alloy highway bridge guardrail of the present invention;

Fig. 2 is the structural representation of the upper column part in the guardrail of the beam-column aluminum alloy highway bridge of the present invention;

Fig. 3 is the structural representation of the lower column part in the guardrail of the beam-column aluminum alloy highway bridge of the present invention;

Fig. 4 is the structural representation of the upper beam in the guardrail of the beam-column aluminum alloy highway bridge of the present invention;

Fig. 5 is the structural representation of the lower beam in the guardrail of the beam-column aluminum alloy highway bridge of the present invention;

6 is a schematic structural diagram of the assembled upper column and lower column in the guardrail of the beam-column aluminum alloy highway bridge of the present invention;

7 is a schematic diagram of the installation of the upper column and the lower column in the guardrail of the beam-column type aluminum alloy highway bridge of the present invention after assembly.

Reference numerals: upper column 1, upper insertion tongue groove 11, upper insertion tongue 12, upper beam fixing seat 13, first bolt hole 131, upper column lower beam fixing seat 14, second bolt hole 141, upper triangular reinforcement Rib 15, upper support seat 16, lower column 2, lower insertion tenon 21, lower insertion tenon groove 22, third bolt hole 221, lower column lower beam fixing seat 23, lower support seat 24, lower triangular reinforcing rib 25, Column base plate 26, fourth bolt hole 261, upper beam 3, upper beam collision surface 31, upper beam installation surface 32, upper beam inner reinforcement 33, upper beam installation groove 34, lower beam 4, lower beam collision surface 41, Lower beam installation surface 42 , lower beam inner reinforcement 43 , lower beam installation groove 44 , T-bolt group 5 , stainless steel plate 6 , anchor bolt 7 , concrete base 8 , bridge deck pavement 9 .

Detailed ways

The embodiments of the present invention are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only used to illustrate the basic idea of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

Among them, the accompanying drawings are only used for exemplary description, and represent only schematic diagrams, not physical drawings, and should not be construed as limitations of the present invention; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings will be omitted, The enlargement or reduction does not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the accompanying drawings may be omitted.

The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms “upper”, “lower”, “left” and “right” , "front", "rear" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must be It has a specific orientation, is constructed and operated in a specific orientation, so the terms describing the positional relationship in the accompanying drawings are only used for exemplary illustration, and should not be construed as a limitation of the present invention. situation to understand the specific meaning of the above terms.

In the prior art, the reinforced concrete wall guardrail consists of two materials, steel bars and concrete, and forms a wall structure with a specific geometric shape. After the runaway car hits the guardrail, it climbs, deforms, rubs and turns to absorb the collision energy. However, although the anti-collision performance of the reinforced concrete wall guardrail is good, it hardly deforms after the collision. When the collision angle is large, the deformation of the out-of-control vehicle is unilaterally used to absorb the collision energy, and the damage to the vehicle and personnel is relatively serious. In addition, the reinforced concrete wall guardrail increases the weight of the bridge, occupies a large area of the bridge deck, and has a dull appearance, which blocks the driver's sight.

The corrugated beam guardrail is a continuous beam-column structure composed of corrugated steel plates and columns spliced with each other. The deformation of the soil foundation, the columns and the corrugated steel plates is used to absorb the collision energy and force the out-of-control vehicle to return to the normal driving direction. However, the rigidity of the corrugated beam steel guardrail is small, which cannot meet the requirements for the use of highway bridge guardrails, and the safety protection capability is limited. Vehicles often rush out of the roadside guardrail, causing car crashes and fatalities, and it is easy to cross the central divider and drive into the opposite lane, causing secondary damage. ACCIDENT.

The beam-column steel guardrail is composed of columns, beams, splicing sleeves, connecting bolts, column flanges, etc. The guardrail columns are made of H-shaped steel, and the beams are made of square steel pipes and round steel pipes. The beam-column steel guardrail combines the characteristics of the corrugated beam guardrail and the concrete guardrail. However, the beam-column steel guardrail needs to be treated with anti-corrosion treatment before it can be put into use, and the cost is high, and the long-term effect of anti-corrosion technologies such as plastic spraying, galvanizing, and aluminum plating is not good, the maintenance cost is high, and the service life is short, which is not in line with energy conservation and environmental protection. concept.

In addition, the appearance of steel guardrails is relatively heavy and dense, which increases the difficulty of construction and installation, and wastes manpower and material resources. The extrusion performance of steel is poor, the cross-sectional form of the guardrail members is single (mainly rectangular and circular), and the guardrail members lack the design of collision buffering, guiding, and bending and torsional rigidity.

The beam-column aluminum alloy highway bridge guardrail shown in Figures 1 to 7 includes an upper column part (as shown in Figure 2) and a lower column part (as shown in Figure 3) that are inserted into each other. The connection methods are mutually clamped to form an arched structure, and they are all made of large-section aluminum alloy profiles.

The upper column part includes an arched upper column 1 and an upper triangular reinforcing rib 15 installed in the inner cavity of the upper column 1, and the lower column part includes an arched lower column 2 and a lower triangular reinforcing rib 25 installed in the inner cavity of the lower column 2. The triangular reinforcing rib 15 and the lower triangular reinforcing rib 25 play the role of enhancing the rigidity, strength and energy absorption of the guardrail column. When the bridge guardrail formed by the upper column 1 and the lower column 2 is collided, the upper triangular reinforcing rib 15 and the lower triangular reinforcing rib 25 can distribute the collision force evenly downward and outward along the inner upper triangular reinforcing rib 15 and the lower triangular reinforcing rib 25 It is transmitted to the adjacent parts, so that the upper and lower columns 1 and 2 of the guardrail are evenly stressed on both sides, and the impact force on the inside of the bridge guardrail is buffered to the greatest extent.

The top end of the upper column 1 is integrally formed with the upper beam fixing seat 13 for fixing the upper beam 3. The upper beam fixing seat 13 is provided with a first bolt hole 131, and the outer side of the lower end of the upper column 1 is provided with an upper insertion tongue groove 11, and the inner side The upper insertion tenon 12 with the second bolt hole 141 is integrally formed and installed, and the inner side of the upper insertion tenon 12 is integrally formed and installed to fix the upper column and lower beam fixing seat 14 of the lower beam 4 . The top of the lower column 2 is integrally formed with a lower insertion tenon 21 that cooperates with the upper insertion tongue groove 11 , and the inner side of the upper end of the lower column 2 is provided with a lower insertion tenon 12 that cooperates with the upper insertion tenon 12 and has a third bolt hole 221 . The insertion tongue groove 22 is integrally formed with the inner side of the lower insertion tongue groove 22 to install the lower column and lower beam fixing seat 23 for fixing the lower beam 4 .

The lower surface of the upper column 1 is the upper support seat 16, the upper surface of the lower column 2 is the lower support seat 24 used in conjunction with the upper support seat 16, the bottom surface of the lower column 2 is the column base plate 26, and the column base plate 26 is provided with a fourth Bolt holes 261, the concrete base 8 and the lower column 2 are provided with a stainless steel plate 6 embedded on the concrete base 8, and the lower column 2, the stainless steel plate 6 and the Fixing of concrete base 8.

The upper column 1 is fixedly connected to the upper beam 3 through the first bolt hole 131 , and the joint between the upper column 1 and the lower column 2 is fixedly connected to the lower beam 4 through the second bolt hole 141 and the third bolt hole 221 . The upper beam 3 and the lower beam 4 are made of special aluminum alloy extruded profiles, and the cross-sectional structure is football or honeycomb shape. The purpose is to help improve the rigidity and strength of the guardrail and guide the vehicle to slide back to the lane. The upper surface of the concrete base 8 between the guardrails is used for bridge decking 9 .

In this patent, the cross-section of the upper beam 3 is honeycomb-shaped, and includes the collision surface 31 of the upper beam, the mounting surface 32 of the upper beam and the inner reinforcement 33 of the upper beam. There is a T-shaped upper beam installation groove 34 in the middle of the installation surface of the upper beam 3. The upper beam installation groove 34 has the function of connecting and sliding, which is convenient for the installation of the upper beam 3 and the upper column 1. The T-shaped bolts pass through the upper beam installation groove of the guardrail in turn. 34. The first bolt holes 131 on the upper beam fixing base 13 connect and fix the upper beam 3 and the upper column 1 .

The cross-section of the lower beam 4 of the guardrail is also in the shape of a honeycomb, including the impact surface 41 of the lower beam, the installation surface 42 of the lower beam and the inner reinforcement 43 of the lower beam. There is a T-shaped lower beam installation groove 44 in the middle of the lower beam installation surface 42, and the T-shaped bolts pass through the guardrail lower beam installation groove 44, the upper insertion tenon 12 and the lower insertion tenon groove 22 in turn. The lower column 2 is integrally connected and fixed, and the connection mode of plug-in and screw-over overlap is more reliable. The upper beam installation groove 34 and the lower beam installation groove 44 have the function of slides, which facilitate the installation of the upper beam 3 , the lower beam 4 , the upper column 1 and the lower column 2 . The honeycomb-shaped inner ribs 33 of the upper beam and the inner ribs 43 of the lower beam 4 in the upper beam 3 and the lower beam 4 have the function of buffering collision.

In this patent, the upper column 1, the lower column 2, the upper beam 3 and the lower beam 4 are all made of special aluminum alloy extruded profiles. The aluminum alloy has medium strength, excellent plasticity and good buffer performance, and meets the requirements of bridge guardrails. The density of aluminum alloy is 1/3 of that of steel, which greatly reduces the weight of the bridge. The aluminum alloy guardrail column is divided into two parts: the upper column 1 and the lower column 2, both of which are made of large-section special aluminum alloy profiles. The arched structure is formed by clamping each other through a plug connection, and the arched column structure enhances the overall bending rigidity and bending strength of the guardrail.

The inner cavity of the column profile is provided with triangular reinforcing ribs. When the guardrail collides, the collision force can be evenly transmitted downward and outward along the internal reinforcing ribs to the adjacent parts, so that the inner and outer sides of the guardrail column can be uniformly stressed and maximized. The impact force on the front of the guardrail column is buffered.

The assembly of the beam-column aluminum alloy highway bridge guardrail includes the following steps:

The first step is to assemble the column; the aluminum alloy guardrail column is divided into an upper column part and a lower column part, both of which are made of large-section aluminum alloy profiles. The upper insertion tenon 11 of the upper column 1 and the lower insertion tenon 21 of the lower column 2 are inserted and clamped to form an arched column. The upper insertion tenon 12 of the upper column 1 is inserted into the lower insertion tenon 22 of the lower column 2 Connect assembly.

In the second step, the column is connected to the foundation; the column bottom plate 26 , the stainless steel plate 6 and the concrete base 8 of the aluminum alloy lower column 2 are connected and fastened by the pre-embedded anchor bolts 7 . In order to ensure the safety performance of the bridge guardrail, the distance between the columns should be less than or equal to 1.8m.

The third step is to install the lower beam; insert suitable T-bolts into the first bolt hole 131 of the upper beam fixing seat 13 and the installation groove of the upper beam 3 to fix the upper beam 3 and the upper column 1 .

The fourth step, install the upper beam; insert suitable T-bolts in the second bolt hole 141 of the upper column 1, the third bolt hole 221 of the lower column 2 and the installation groove of the lower beam 4 to connect the lower beam 4 with the upper column 1, The lower column 2 is integrally connected and fixed.

The upper beam 3 of the guardrail is spliced on the upper beam fixing seat 13 at the top of the upper column 1, the splicing position of the lower beam 4 is set at the joint of the upper column 1 and the lower column 2, and the ends of the upper beam 3 and the lower beam 4 are respectively connected with the guardrail column. fixed. In order to ensure the anti-collision performance of the bridge guardrail, only one splicing point can be set on the symmetrical plane of the same column.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be Modifications or equivalent replacements, without departing from the spirit and scope of the technical solution, should all be included in the scope of the claims of the present invention.

Claims (8)

1. The utility model provides a beam column type aluminum alloy highway bridge guardrail, a serial communication port, stand and lower stand on for arched cavity including pegging graft each other, the lower extreme outside of going up the stand has been seted up and has been pegged graft the tongue-and-groove, inboard integrated into one piece installs the grafting tenon, the lower grafting tenon that uses with last grafting tongue-and-groove cooperation is installed to the top integrated into one piece of lower stand, the lower grafting tongue-and-groove that uses with last grafting tongue-and-groove cooperation is seted up to the upper end inboard of lower stand, go up stand top and last grafting tongue-and-groove, lower grafting tongue-and-groove junction fixed mounting has the crossbeam, the crossbeam is including meeting the face of hitting, muscle in installation face and the.

2. The beam-column aluminum alloy highway bridge guardrail of claim 1 wherein the cross beam comprises an upper cross beam and a lower cross beam, an upper cross beam fixing seat for installing the upper cross beam is integrally installed at the top end of the upper upright column, and a lower cross beam fixing seat for fixing the lower cross beam is integrally installed at the inner side of the lower inserting mortise.

3. The beam column type aluminum alloy highway bridge guardrail of claim 2 wherein the upper beam fixing seat is provided with a first bolt hole for fixing the upper beam, the upper inserting tenon on the inner side of the lower end of the upper upright column is provided with a second bolt hole, and the lower inserting tenon is provided with a third bolt hole which is matched with the second bolt hole and is used for fixing the lower beam.

4. The beam column type aluminum alloy highway bridge guardrail of claim 1 wherein the upper column cavity is provided with an upper triangular reinforcing rib and the lower column cavity is provided with a lower triangular reinforcing rib.

5. The beam-column aluminum alloy highway bridge guardrail of claim 1 wherein the bottom surface of the lower upright is an upright base plate, and the upright base plate is provided with a fourth bolt hole for fixing the upper upright and the lower upright on the concrete base.

6. The beam-column aluminum alloy highway bridge guardrail of claim 1 wherein the cross-beam cross-section is football or honeycomb.

7. The beam-column aluminum alloy highway bridge guardrail of claim 1 wherein the upper and lower mortise slot are dovetail slot structures.

8. The beam-column aluminum alloy highway bridge guardrail of claim 1 wherein the lower surface of the upper column is an inclined upper support and the upper surface of the lower column is a lower support cooperating with the upper support.

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