Bridge guardrail with curve-shaped stand columns

Abstract

The utility model discloses a bridge guardrail with curved columns, which belongs to the technical field of bridge guardrails and comprises column bases which are pre-poured on two sides of a bridge. The stand columns are arranged on the two sides of the bridge through stand column bases, and bolt protective covers are arranged at the bottoms of the stand columns. The circular beam is arranged at the top of the upright; the energy absorption connecting assembly is arranged on the side, close to the bridge floor, of the stand column and connected with the rectangular cross beam; the rectangular cross beams are horizontally arranged between the adjacent stand columns; during use, the buffering and energy-absorbing effects can be achieved through the energy-absorbing connecting assemblies during collision, the effect of preventing exposed bolts from scraping automobile tires is achieved through the bolt protective covers, meanwhile, installation is flexible, and the advantages that the buffering effect is good, corrosion of the bottoms of the stand columns can be effectively avoided, and the shape of a bridge guardrail can be effectively formed are achieved; the problems that an existing bridge guardrail structure is poor in energy absorption buffering effect and aesthetic feeling, exposed bolts are prone to scraping automobile tires, and the accident severity degree is increased are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge guardrails, and in particular relates to a bridge guardrail with curved columns. Background Art

[0002] Bridges generally refer to structures built on rivers, lakes, and seas to allow vehicles and pedestrians to pass smoothly. In order to adapt to the modern high-speed development of the transportation industry, bridges are also extended to buildings that cross mountain streams, poor geology, or meet other traffic needs to make passage more convenient. Bridge guardrails refer to guardrails installed on bridges. Their purpose is to prevent out-of-control vehicles from going over the bridge. They have the function of preventing vehicles from breaking through, passing under, or climbing over the bridge, as well as beautifying the bridge building.

[0003] The types of bridge guardrails are generally divided into concrete guardrails, metal beam-column guardrails and combined guardrails. Concrete guardrails and combined guardrails are too rigid and have poor buffering effects. In the event of an accident, they are likely to cause damage to the main body of the bridge, serious damage to vehicles, and increased injuries to personnel. The metal beam-column guardrail structure is mainly composed of columns installed on the bridge deck and transverse metal beams for connecting the columns. For example, the authorization announcement number CN212641196U discloses a bridge metal column guardrail, including a bottom plate, a column fixedly connected to the top of the bottom plate, and the column including a first support plate and a second support plate, the first support plate is located on one side of the second support plate, the top of the first support plate and the second support plate are both fixedly connected to a top rod, and the inner sides of the first support plate and the second support plate are both fixedly connected to a first reinforcing rib, a second reinforcing rib and a third reinforcing rib. The bottom plate, the first support plate, the second support plate, the top rod, the first reinforcing rib, the second reinforcing rib, the third reinforcing rib, the upper beam, the middle beam and the bottom beam are arranged to achieve rapid installation of the guardrail structure, and the guardrail structure itself has a good anti-collision effect. However, when the structure is in use, there are still problems such as:

[0004] 1. Although the structure has a certain anti-collision effect, its anti-collision effect mainly depends on the strength of the rear column and the tension between the adjacent support plates. There is no corresponding energy absorption and buffer structure between the column and the support plate. Therefore, when the guardrail structure is subjected to external force, it is easy to directly cause the rigidity of the column or the support plate to be damaged under the impact of the external force, and the column needs to be replaced or repaired, resulting in high maintenance costs and troublesome maintenance process;

[0005] 2. The above structure does not have a corresponding structure at the bottom of the column to prevent the leaking bolts from scratching the car tires. Therefore, when a vehicle collision occurs, the bolts are likely to scratch the tires and get in the way, increasing the severity of the accident.

[0006] 3. The above-mentioned column structure is a straight column, which has poor aesthetics and cannot achieve a streamlined shape for the bridge guardrail structure, thus affecting the overall aesthetics of the bridge guardrail;

[0007] Therefore, the utility model proposes a bridge guardrail with curved columns to solve the problems existing in the above-mentioned prior art. Utility Model Content

[0008] In view of this, the main purpose of the utility model is to provide a bridge guardrail with curved columns.

[0009] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0010] A bridge guardrail with curved columns, comprising

[0011] Column bases, precast on both sides of the bridge;

[0012] The columns are arranged on both sides of the bridge through column bases, and bolt guards are arranged at the bottoms of the columns;

[0013] A circular crossbeam, set on top of the columns;

[0014] The energy absorbing connection assembly is arranged on the side of the column close to the bridge deck and is detachably connected to the rectangular cross beam;

[0015] A rectangular beam that is horizontally set between adjacent columns.

[0016] In a preferred embodiment, the column is a curved structure, including a column base plate, and an outer curved plate arranged on the column base plate; an inner curved plate is arranged on the upper side of the column base plate close to the bridge deck, a connecting beam is arranged on the outer curved plate and the inner curved plate bracket, and a plurality of stiffening plates are arranged on the connecting beam, and the stiffening plates are also connected to the outer curved plate and the inner curved plate.

[0017] In a preferred embodiment, a plurality of connection holes are provided on the side of the column base plate to connect to the bolt guard cover. The bolt guard cover is a shapeable plate-like structure, and the upper side plate of the bolt guard cover is bent inward and abuts against the outer curved plate and the outer wall of the connecting beam, and the bolt guard cover forms an observation port on the side where the outer curved plate is located.

[0018] In a preferred embodiment, the column bottom plate is a wedge-shaped steel plate, and the thickness of the steel plate on the side of the column bottom plate close to the bridge deck is greater than the thickness of the steel plate on the side away from the bridge deck.

[0019] In a preferred embodiment, the energy absorbing connection assembly is arranged on the side of the inner curved plate adjacent to the road surface where the stiffening plate is located, and includes

[0020] The energy absorption box is a box-shaped structure arranged on the side of the stiffening plate close to the road surface, and connecting steel plates connected to the rectangular beams are symmetrically arranged on both sides of the outer end of the energy absorption box;

[0021] The resistance change plates are symmetrically arranged inside the energy absorption box, and an energy absorption block is also arranged between the two symmetrically arranged resistance change plates.

[0022] In a preferred embodiment, the connecting steel plate is a corrugated steel plate that matches the side wall steel plate of the energy absorption box.

[0023] In a preferred embodiment, the energy absorbing block is made of rubber material.

[0024] In a preferred embodiment, the column base comprises

[0025] Upper connecting plate;

[0026] A lower connecting plate is arranged at the lower side of the upper connecting plate and connected to the upper connecting plate through a middle connecting column;

[0027] If there are embedded steel bars, they shall be set on the lower side of the lower connecting plate.

[0028] In a preferred embodiment, the embedded steel bars are threaded steel bars.

[0029] In a preferred embodiment, the upper side surface of the lower connecting plate is a trapezoidal structure that is smaller at the top and larger at the bottom.

[0030] Compared with the prior art, the utility model provides a bridge guardrail with curved columns, which has the following beneficial effects:

[0031] 1. Through the setting of the energy-absorbing connection component, when the rectangular crossbeam is hit by an external impact, it first acts on the energy-absorbing box, and the side wall of the energy-absorbing box is a corrugated structure, which plays an energy-absorbing role through the spring-like self-buffering effect when it is hit; and when the elastic effect of the energy-absorbing box is not enough to completely offset the impact force, the energy-absorbing box undergoes plastic deformation to offset the energy. At the same time, after the allowable deformation value of the energy-absorbing box reaches the limit, the side wall of the energy-absorbing box acts on the resistance plate to squeeze the resistance plate to deform. In the process of deformation of the resistance plate, the rubber energy-absorbing block is used to absorb the energy, so as to play a buffering and energy-absorbing role through the two-layer energy-absorbing effect, protect the overall structure, effectively ensure the safety of the structure, and avoid the problem that the rigidity of the column or the support plate is easily directly damaged when the structure is hit;

[0032] 2. The bolt protection cover can effectively prevent the bolts from scratching the tires and getting in the way when a vehicle collision occurs, thereby increasing the severity of the accident;

[0033] 3. Through the structural setting of the column and the column base, the guardrail structure can be easily installed and assembled during use, thereby improving construction efficiency and installation flexibility; at the same time, it is easy to form a curved column guardrail structure to ensure aesthetics; and the purpose of buffering energy, preventing bolts from scratching tires, and shaping the shape of bridge guardrails is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 This is a structural schematic diagram of the curved column guardrail structure of the utility model;

[0036] Figure 2 This is the installation effect diagram of the column base and the column of the utility model;

[0037] Figure 3 It is a structural schematic diagram of the column base of the utility model;

[0038] Figure 4 This is the front view of the column base of the utility model;

[0039] Figure 5 It is a structural schematic diagram of the utility model column;

[0040] Figure 6 This is a schematic diagram of the structure of the energy-absorbing connection assembly of the utility model;

[0041] Figure 7 It is a cross-sectional view of the energy-absorbing connection assembly of the utility model from a top view angle.

[0042]

Main component symbol description

[0043] 1. Circular beam; 2. Column base; 21. Upper connecting plate; 22. Embedded steel bars; 23. Lower connecting plate; 3. Column; 31. Outer curved plate; 32. Inner curved plate; 33. Connecting beam; 34. Stiffening plate; 35. Column bottom plate; 4. Energy absorbing connection assembly; 41. Energy absorbing box; 42. Connecting steel plate; 43. Resistance plate; 44. Energy absorbing block; 5. Rectangular beam; 6. Bolt guard. DETAILED DESCRIPTION

[0044] The method of the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments of the present invention.

[0045] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0046] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0047] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0048] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0049] See also Figure 1-Figure 7 , the utility model provides a technical solution:

[0050] A bridge guardrail with curved columns, comprising a circular crossbeam 1, a column base 2, a column 3, an energy absorbing connection assembly 4 and a rectangular crossbeam 5; wherein

[0051] The column base 2 is precast on both sides of the bridge;

[0052] The column 3 is detachably mounted on both sides of the bridge through the column base 2. The column 3 is a curved structure, and a bolt protective cover 6 is detachably mounted at the bottom of the column 3.

[0053] The circular crossbeam 1 is detachably mounted on the top of the column 3;

[0054] The energy absorbing connection assembly 4 is arranged on a side of the column 3 close to the bridge deck and is detachably connected to the rectangular cross beam 5;

[0055] The rectangular crossbeam 5 is horizontally arranged between adjacent columns 3;

[0056] In this embodiment, through the arrangement of the above-mentioned structure, the column base 2 can be pre-cast on both sides of the bridge according to the design requirements during the bridge construction process, and then the column 3 can be installed on the upper side of the column base 2 during the installation of the bridge guardrail. During the installation process, the installation height of the column 3 can be adjusted by adding a gasket between the column 3 and the column base 2. After the column 3 is installed, a bolt guard 6 is installed at the foot of the column 3 to prevent water from entering the foot of the column 3 and causing rust. Finally, a circular beam 1 and a rectangular beam 5 are respectively installed on the side of the column 3 close to the bridge deck, so that they can form a bridge column guardrail that plays a stable support and protection role.

[0057] As a preferred embodiment, Figure 2 , Figure 3 and Figure 4 As shown, the column base 2 includes an upper connecting plate 21, embedded steel bars 22 and a lower connecting plate 23, wherein

[0058] The upper connecting plate 21 is arranged on the upper side of the lower connecting plate 23 and is connected to the bottom of the column 3 through a connecting bolt;

[0059] The lower connecting plate 23 is arranged at the lower side of the upper connecting plate 21 and is connected to the upper connecting plate 21 through a middle connecting column;

[0060] The plurality of embedded steel bars 22 are arranged at the lower side of the lower connecting plate 23 and are threaded steel bars;

[0061] In this embodiment, by setting the upper connecting plate 21, the column base 2 can be connected to the bottom of the column 3 during the installation process to form a stable detachable and assembled structure; by setting the lower connecting plate 23, a structure flush with the concrete casting plane can be formed after pouring, which can not only prevent water from seeping in and corroding the embedded steel bars 22, but also facilitate leveling during pouring; by setting the embedded steel bars 22, the column base 2 can form a whole with the bridge structure after pouring, so as to play a supporting and stabilizing role.

[0062] As a preferred embodiment, Figure 2 , Figure 3 and Figure 4 As shown, the upper side surface of the lower connecting plate 23 is a trapezoidal structure with a small upper portion and a large lower portion, so that when in use, the inclined surface of the trapezoidal structure can be used for drainage to prevent water from being retained on the lower connecting plate 23 .

[0063] As a preferred embodiment, Figure 1 , Figure 2 and Figure 5 As shown, the column 3 includes a column bottom plate 35, and an outer curved plate 31, an inner curved plate 32 and a connecting beam 33 arranged on the column bottom plate 35. The outer curved plate 31 is arranged on the outer side of the connecting beam 33, and the inner curved plate 32 is arranged on the inner side of the connecting beam 33, so as to form a curved column 3 that plays a supporting role. In order to strengthen the strength of the column 3, a plurality of stiffening plates 34 are welded between the outer curved plate 31 and the inner curved plate 32, and the stiffening plates 34 are also welded to the connecting beam 33.

[0064] In this embodiment, the main steel structure of the column 3 is formed by the outer curved plate 31, the inner curved plate 32 and the connecting beam 33 which are welded to each other, which can ensure the structural strength while ensuring the aesthetic appearance and avoid damage caused by external impact force. The column bottom plate 35 is arranged to facilitate the connection between the column base 2 and the column 3 to form a stable structure. The stiffening plate 34 is arranged to effectively increase the integrity of the outer curved plate 31, the inner curved plate 32 and the connecting beam 33, thereby ensuring the safety of the column 3 when in use.

[0065] As a preferred embodiment, Figure 1 , Figure 2 and Figure 5 As shown, the steel plate side of the column bottom plate 35 is also provided with a plurality of connection holes connected to the bolt protection cover 6. The bolt protection cover 6 is a plastic plate-like structure, and the upper side plate of the bolt protection cover 6 is bent inward and abuts against the outer side wall of the inner curved plate 32 and the connecting beam 33, and an observation port is left on the side where the outer curved plate 31 is located;

[0066] In this embodiment, the bolt protection cover 6 can effectively prevent the leaking bolts from scratching the car tires; through the observation port, it can be observed whether the bolt connection is stable and whether it needs to be reinforced for maintenance personnel to use.

[0067] As a preferred embodiment, Figure 1 , Figure 2 and Figure 5 As shown, in order to facilitate the discharge of the water flow entering from the observation port, the column bottom plate 35 is designed to be a wedge-shaped steel plate, and the thickness of the steel plate on the side close to the bridge deck is greater than the thickness of the steel plate on the side away from the bridge deck, so as to facilitate the timely discharge of the water flow entering through the observation port to the outside of the bridge.

[0068] As a preferred embodiment, Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the energy absorbing connection assembly 4 is arranged on the side of the inner curved plate 32 close to the road surface where the stiffening plate 34 is located, and includes an energy absorbing box 41 and a resistance plate 43;

[0069] The energy absorption box 41 is a box-shaped structure welded to the side of the stiffening plate 34 close to the road surface, and connecting steel plates 42 are symmetrically arranged on both sides of the outer end of the energy absorption box 41, and the connecting steel plates 42 and the rectangular cross beam 5 are precast;

[0070] The resistance plate 43 is a corrugated steel plate symmetrically arranged inside the energy absorption box 41, and is used together with the corrugated side wall steel plate of the energy absorption box 41 to resist the deformation of the corrugated side wall steel plate of the energy absorption box 41 when subjected to force, and a rubber energy absorption block 44 is also arranged between the two symmetrically arranged resistance plates 43;

[0071] In this embodiment, when the rectangular crossbeam 5 is subjected to external impact, it first acts on the energy absorption box 41, and the side wall of the energy absorption box 41 is a corrugated structure, which has a spring-like self-buffering effect when subjected to impact to absorb energy; and when the elastic effect of the energy absorption box 41 is not sufficient to completely offset the impact force, the energy absorption box 41 undergoes plastic deformation to offset the energy. At the same time, after the allowable deformation value of the energy absorption box 41 reaches the limit, the side wall of the energy absorption box 41 acts on the resistance plate 43 to squeeze the resistance plate 43 to deform. During the deformation of the resistance plate 43, the rubber energy absorption block 44 is used to absorb energy, thereby playing a role in buffering and absorbing energy, and protecting the overall structure.

[0072] The construction and use principles of the curved column guardrail structure of the utility model include:

[0073] Construction: During construction, firstly, during the bridge construction process, the column base 2 is precast on both sides of the bridge according to the design requirements. Then, during the installation of the bridge guardrail, the column 3 is installed on the upper side of the column base 2. During the installation process, the installation height of the column 3 can be adjusted by adding a gasket between the column 3 and the column base 2. After the column 3 is installed, a bolt protective cover 6 is installed at the foot of the column 3 to prevent the leaking bolts from scratching the tires and tripping in the event of a vehicle collision accident, thereby increasing the severity of the accident. Finally, a circular beam 1 and a rectangular beam 5 are installed on the energy-absorbing connection assembly 4 on the side of the column 3 close to the bridge deck, so that they can form a bridge column guardrail that plays a stable supporting and protective role.

[0074] During use: when the rectangular crossbeam 5 is subjected to external impact, it first acts on the energy absorption box 41, and the side wall of the energy absorption box 41 is a corrugated structure, which has a spring-like self-buffering effect when subjected to impact to absorb energy; and when the elastic effect of the energy absorption box 41 is not sufficient to completely offset the impact force, the energy absorption box 41 undergoes plastic deformation to offset the energy. At the same time, after the allowable deformation value of the energy absorption box 41 reaches the limit, the side wall of the energy absorption box 41 acts on the resistance plate 43 to squeeze the resistance plate 43 to deform. During the deformation of the resistance plate 43, the rubber energy absorption block 44 is used to absorb energy, thereby playing a role in buffering and absorbing energy, and protecting the overall structure.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A bridge guardrail with curved columns, characterized in that: include Column bases (2), precast on both sides of the bridge; A column (3) is arranged on both sides of the bridge through a column base (2), and a bolt protection cover (6) is arranged at the bottom of the column (3); A circular crossbeam (1) is arranged on the top of the column (3); An energy absorbing connection assembly (4) is arranged on a side of the column (3) close to the bridge deck and is detachably connected to the rectangular crossbeam (5); A rectangular crossbeam (5) is horizontally arranged between adjacent upright columns (3).

2. A bridge guardrail with curved columns according to claim 1, characterized in that: The column (3) is a curved structure, comprising a column bottom plate (35), and an outer curved plate (31) arranged on the column bottom plate (35); an inner curved plate (32) arranged on the upper side of the column bottom plate (35) and close to the bridge deck; a connecting beam (33) arranged on a bracket of the outer curved plate (31) and the inner curved plate (32), and a plurality of stiffening plates (34) are arranged on the connecting beam (33), and the stiffening plates (34) are also connected to the outer curved plate (31) and the inner curved plate (32).

3. A bridge guardrail with curved columns according to claim 2, characterized in that: The side of the column bottom plate (35) is also provided with a plurality of connection holes connected to the bolt protection cover (6); the bolt protection cover (6) is a shapeable plate-like structure, and the upper side plate of the bolt protection cover (6) is bent inwardly and contacts the outer side wall of the outer curved plate (31) and the connecting beam (33); and the bolt protection cover (6) forms an observation port on the side where the outer curved plate (31) is located.

4. The bridge guardrail with curved columns according to claim 2, characterized in that: The column bottom plate (35) is a wedge-shaped steel plate, and the thickness of the steel plate on the side of the column bottom plate (35) close to the bridge deck is greater than the thickness of the steel plate on the side away from the bridge deck.

5. The bridge guardrail with curved columns according to claim 2, characterized in that: The energy absorbing connection assembly (4) is arranged on the side of the inner curved plate (32) adjacent to the road surface where the stiffening plate (34) is located, and comprises The energy absorption box (41) is a box-shaped structure arranged on the side of the stiffening plate (34) close to the road surface, and connecting steel plates (42) are symmetrically arranged on both sides of the outer end of the energy absorption box (41) to connect with the rectangular cross beam (5); The resistance plates (43) are symmetrically arranged inside the energy absorption box (41), and an energy absorption block (44) is also arranged between the two symmetrically arranged resistance plates (43).

6. The bridge guardrail with curved columns according to claim 5, characterized in that: The connecting steel plate (42) is a corrugated steel plate that matches the side wall steel plate of the energy absorption box (41).

7. The bridge guardrail with curved columns according to claim 5, characterized in that: The energy absorbing block (44) is made of rubber material.

8. The bridge guardrail with curved columns according to claim 1, characterized in that: The column base (2) comprises Upper connecting plate (21); A lower connecting plate (23) is arranged on the lower side of the upper connecting plate (21) and is connected to the upper connecting plate (21) via a middle connecting column; If embedded steel bars (22) are present, they are arranged on the lower side of the lower connecting plate (23).

9. The bridge guardrail with curved columns according to claim 8, characterized in that: The embedded steel bars (22) are threaded steel bars.

10. The bridge guardrail with curved columns according to claim 8, characterized in that: The upper side surface of the lower connecting plate (23) is a trapezoidal structure that is smaller at the top and larger at the bottom.

Images