Combined bridge guardrail

Abstract

A combined type bridge guardrail comprises a concrete base extending along the edge of a bridge floor, a plurality of supporting stand columns are arranged at the top of the concrete base, the supporting stand columns are connected with an upper cross beam and a lower cross beam which are parallel through anti-blocking blocks, and the upper cross beam and the lower cross beam are arranged on the first supporting stand column facing the driving direction of a vehicle. A Y-shaped structural part is connected through the anti-blocking block, the Y-shaped structural part comprises a first horizontal part and a second horizontal part, a connecting part is arranged between the first horizontal part and the second horizontal part, the first horizontal part is further provided with a bent part, and the bent part is connected with the Y-shaped structural part. And the first horizontal part and the second horizontal part are respectively connected with the upper cross beam and the lower cross beam through sleeves. The combined bridge guardrail provided by the utility model is convenient to assemble and maintain, transparent, attractive and low in comprehensive cost on the premise of ensuring the safety of vehicles and personnel in the driving direction.

Description

TECHNICAL FIELD

[0001] The utility model relates to traffic safety facilities technical field especially relates to a combined bridge guardrail. BACKGROUND

[0002] The common structure of bridge guardrails includes rigid guardrails, semi-rigid guardrails and combined guardrails. The rigid guardrails include concrete F type, single slope type, etc. The most commonly used semi-rigid guardrail is the metal beam column structure. The combined guardrail is combined by rigid components and semi-rigid components, and the common type is that the lower part is a reinforced concrete base, and the upper part is provided with a metal cross beam on the concrete base. Considering safety, economy and aesthetics, the combined guardrail is most commonly used on the existing highway bridges.

[0003] In order to increase the safety of the combined guardrail, the Chinese patent CN109577187A provides a bridge guardrail, which includes a concrete base extending along the edge of the bridge deck and a protective beam. The protective beam includes a plurality of support columns arranged along the extension direction of the base, a first cross beam mounted on the base and arranged along the extension direction of the base, and a plurality of first impact blocks located between the first cross beam and the plurality of columns corresponding to the columns. One end of each first impact block is fixedly connected to the corresponding column, and the other end is fixedly connected to the first cross beam. This technical solution can greatly reduce the collision load transmitted to the bridge deck when a vehicle collides, effectively avoid damage to the bridge deck caused by the vehicle collision, and improve the service life of the bridge deck. However, this technical solution does not provide protection design for the end of the cross beam, that is, according to the conventional end design, only the first cross beam needs to have a certain curvature, and then an end cover is provided at the end to maintain the appearance, avoid water and other debris from entering the inside of the cross beam. When there are multiple first cross beams, there is no continuous structure between the first cross beams, which will cause force dispersion, and in addition, there are deficiencies in appearance and installation convenience. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a combined bridge guardrail to reduce or avoid the problems mentioned above.

[0005] In order to solve the above technical problems, the utility model provides a combined bridge guardrail, it includes the concrete base along the bridge deck edge extension, the concrete base top is provided with a plurality of support columns, the support column is connected with the parallel upper crossbeam and lower crossbeam through the anti block, on the first support column in the vehicle driving direction, through the anti block is connected with a Y type structural member, the Y type structural member includes first horizontal part and second horizontal part, the first horizontal part and the second horizontal part between setting up the connecting part, the first horizontal part still is provided with the bended part, the first horizontal part and the second horizontal part are connected with the upper crossbeam and the lower crossbeam through the sleeve pipe respectively.

[0006] Preferably, the main body of the connecting part is made by welding an arc-shaped plate after the extension segment of the second horizontal part is bent, and then the arc-shaped plate is welded and connected with the first horizontal part.

[0007] Preferably, the connecting part is made by taking the arc-shaped plate welding connection mode at one end connected with the first horizontal part and the horizontal part setting mode at the other end after being sleeved in the second horizontal part and then welding reinforcement.

[0008] Preferably, the support column includes a column body and a column bottom plate welded and connected, and the column bottom plate is used to be connected with the concrete base through bolts.

[0009] Preferably, at least four L-shaped reinforcing ribs are circumferentially and uniformly arranged on the outer side of the column body and connected with the column bottom plate through welding.

[0010] Preferably, the anti-block includes two half-circle plates with axis orthogonal, and the two half-circle plates are welded and connected through two connecting plates on the outer side.

[0011] Preferably, the support column, the upper crossbeam, the lower crossbeam and the Y type structural member are made of HR700F pipe material.

[0012] The combined bridge guardrail provided by the utility model is convenient to assemble, convenient to maintain, transparent, beautiful and low in comprehensive cost under the premise of ensuring the safety of vehicles and personnel in the driving direction. BRIEF DESCRIPTION OF DRAWINGS

[0013] The following drawings only aim to schematically illustrate and explain the utility model and do not limit the scope of the utility model. Among them,

[0014] Figure 1a It is a top view structural principle schematic view of a combined bridge guardrail according to one specific embodiment of the utility model;

[0015] Figure 1bfor Figure 1a Schematic diagram of the main structural principle of the combined bridge guardrail;

[0016] Figure 1c for Figure 1a Schematic diagram of the right-side structural principle of the combined bridge guardrail;

[0017] Figure 2 for Figure 1b Schematic diagram of the three-dimensional structural principle of the combined bridge guardrail;

[0018] Figure 3 for Figure 2 Schematic diagram of the partial three-dimensional decomposition structure principle;

[0019] Figure 4 1c is a schematic diagram of the three-dimensional structural principle of the support column;

[0020] Figure 5 for Figure 2 Schematic diagram of the three-dimensional structural principle of the anti-blocking block. DETAILED DESCRIPTION

[0021] In order to have a clearer understanding of the technical features, purpose and effects of the present invention, the specific implementation of the present invention is now described with reference to the accompanying drawings, wherein the same components are marked with the same reference numerals.

[0022] Figure 1a This is a schematic diagram of the top structural principle of a combined bridge guardrail according to a specific embodiment of the present utility model; Figure 1b for Figure 1a Schematic diagram of the main structural principle of the combined bridge guardrail; Figure 1c for Figure 1a Schematic diagram of the right-side structural principle of the combined bridge guardrail; Figure 2 for Figure 1b Schematic diagram of the three-dimensional structural principle of the combined bridge guardrail; Figure 3 for Figure 2 Schematic diagram of the principle of partial three-dimensional decomposition structure; see Figures 1a to 3The utility model provides a combined bridge guardrail, which comprises a concrete base 1 extending along the edge of a bridge deck, a plurality of support columns 2 arranged on the top of the concrete base 1, an upper cross beam 41 and a lower cross beam 42 connected to the support columns 2 by anti-blocking blocks 3, and a Y-shaped structural member 5 connected to the first support column 2 in the driving direction of the vehicle by the anti-blocking block 3. The Y-shaped structural member 5 comprises a first horizontal part 51 and a second horizontal part 52, and a connecting part 53 is arranged between the first horizontal part 51 and the second horizontal part 52. The first horizontal part 51 is further provided with a bent part 54, and the first horizontal part 51 and the second horizontal part 52 are connected to the upper cross beam 41 and the lower cross beam 42 by sleeves 6, respectively.

[0023] The technical solution provided by the utility model has the greatest innovation compared with the prior art mentioned in the background art, such as Chinese patent CN109577187A, which is that the Y-shaped structural member 5 is pre-installed to enhance the safety protection performance of the guardrail in the driving direction of the vehicle. Figure 1b and Figure 1c As shown, most of the structure of the connecting part 53 and the first horizontal part 51 is arranged outside the concrete base 1, and the bent part 54 is bent outward after the road surface. In the extension direction of the concrete base 1, the support column 2 on which the Y-shaped structural member 5 is installed is covered. When a vehicle collides with the Y-shaped structural member 5 during driving, it will first collide with the bent part 54. If the kinetic energy of the vehicle is too large, the bent part 54 will bend the first horizontal part 51 outward during the energy absorption process to absorb the kinetic energy of the vehicle. When the first horizontal part 51 is bent to the connecting position of the connecting part 53, more kinetic energy can be transmitted to the second horizontal part 52 through the connecting part 53. Through the energy absorption of the connecting part 53 and the second horizontal part 52, most of the kinetic energy of the out-of-control vehicle can be absorbed by the bent part 54, the first horizontal part 51, the connecting part 53, and the second horizontal part 52 when it collides with the concrete base 1, thereby avoiding direct collision with the concrete base 1 and causing damage to the concrete base 1. In addition, compared with the structure in which the end of the upper cross beam 41 and the lower cross beam 42 is arranged independently, the design of the Y-shaped structural member 5 in the utility model can also avoid the situation that the vehicle is damaged when different parts of the vehicle collide with the ends of the upper cross beam 41 and the lower cross beam 42, respectively, because the kinetic energy is independently loaded on each structure, which may cause the cross beam to penetrate into the vehicle and cause harm to the vehicle occupants.

[0024] On the last support column 2 along the vehicle driving direction, since it is not towards the vehicle driving direction, the Y-shaped structure 5 can not be used, and only the prior art is referred to, and the upper cross beam 41 and the lower cross beam 42 are provided with a bent end.

[0025] The support column 2, the upper cross beam 41, the lower cross beam 42 and the Y-shaped structure 5 can be made of a circular pipe, for example, a pipe of HR700F can be selected. For the Y-shaped structure 5, see Figure 1b 、 1c and Figure 3 The main body of the connecting part 53 can be made by bending the extension of the second horizontal part 52, welding an arc-shaped plate 531, and then welding and connecting the arc-shaped plate 531 with the first horizontal part 51. Of course, the connecting part 53 can also be made by an independent pipe, and the end connected with the first horizontal part 51 still adopts the welding connection mode of the arc-shaped plate 531, and the other end can adopt the mode of setting a horizontal part, sleeving the second horizontal part 52 and then welding and reinforcing.

[0026] See Figure 3 Between the Y-shaped structure 5 and the upper cross beam 41 and the lower cross beam 42, and when the upper cross beam 41 and the lower cross beam 42 need to be segmented and assembled, the upper cross beams 41 of different lengths and the lower cross beams 42 can be connected by the sleeve pipe 6. The sleeve pipe 6 is made of a pipe with a smaller diameter (also can be selected from HR700F material), can be inserted into two parts of the structure to be connected, and then connected by bolts, so as to guarantee the stability of the connection and facilitate assembly and disassembly.

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure principle of the support column with a length of 1c. See Figure 4 The support column 2 includes a column body 21 and a column bottom plate 22 connected by welding, and the column bottom plate 22 is used to be connected with the concrete base 1 by bolts. On the outer side of the column body 21, at least four L-shaped reinforcing ribs 23 connected with the column bottom plate 22 by welding are uniformly arranged in the circumferential direction, so as to increase the connection strength of the column body 21 and the column bottom plate 22.

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure principle of the anti-blocking block of Figure 2 See Figure 5As shown, the anti-blocking block 3 comprises two semi-circular plates 31 which are perpendicular to the axis, and the two semi-circular plates 31 are connected by two connecting plates 32 on the outer side. The two semi-circular plates 31 are connected with the support column 2, the upper cross beam 41, the lower cross beam 42 and the Y-shaped structural member 5 by bolts, so that the energy absorption effect is ensured and the assembly is facilitated.

[0029] The combined bridge guardrail provided by the utility model is convenient to assemble, convenient to maintain, transparent, beautiful and low in comprehensive cost under the premise of ensuring the safety of vehicles and personnel in the driving direction.

[0030] Those skilled in the art should understand that, although the utility model is described in the manner of multiple embodiments, not every embodiment contains only one independent technical solution. The description is only for the sake of clarity, and those skilled in the art should understand the specification as a whole and understand the technical solutions involved in each embodiment as being combinable into different embodiments to understand the protection scope of the utility model.

[0031] The above merely describes the specific embodiments of the utility model, and is not used to limit the scope of the utility model. Any equivalent changes, modifications and combinations made by those skilled in the art without departing from the concept and principles of the utility model should belong to the protection scope of the utility model.

Claims

1. A combined bridge guardrail, comprising a concrete base extending along the edge of the bridge deck, a plurality of support columns are arranged on the top of the concrete base, the support columns are connected with parallel upper and lower cross beams through anti-blocking blocks, characterized in that, On the first support column in the driving direction of the vehicle, a Y-shaped structure is connected through the anti-blocking block, the Y-shaped structure comprises a first horizontal part and a second horizontal part, a connecting part is arranged between the first horizontal part and the second horizontal part, the first horizontal part is further provided with a bending part, and the first horizontal part and the second horizontal part are connected with the upper cross beam and the lower cross beam through sleeves respectively.

2. The modular bridge guardrail of claim 1, wherein, The main body of the connecting part is made by welding an arc-shaped plate after the extension segment of the second horizontal part is bent, and then the arc-shaped plate is welded and connected with the first horizontal part.

3. The modular bridge guardrail of claim 1, wherein, The main body of the connecting part is made by an independent pipe material, one end of which is welded and connected with the first horizontal part in the form of the arc-shaped plate, and the other end is welded and reinforced after being sleeved on the second horizontal part in the form of a horizontal part.

4. The modular bridge guardrail of claim 1, wherein, The support column comprises a column body and a column bottom plate which are welded and connected, and the column bottom plate is used for being bolted with the concrete base.

5. The modular bridge guardrail of claim 4, wherein, At least four L-shaped reinforcing ribs are circumferentially and uniformly arranged on the outer side of the column body and are welded and connected with the column bottom plate.

6. The modular bridge guardrail of claim 1, wherein, The anti-blocking block comprises two half-circular plates which are orthogonal to the axis, and the two half-circular plates are welded and connected through two connecting plates on the outer side.

7. The modular bridge guardrail of claim 1, wherein, The support column, the upper cross beam, the lower cross beam and the Y-shaped structure are all made of HR700F pipe material.

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