Temporary bridge anti-collision steel guardrail for reconstruction and extension project

Abstract

The utility model discloses a bridge temporary anti-collision steel guardrail for reconstruction and extension projects. The bridge temporary anti-collision steel guardrail comprises guardrail stand columns, guardrail cross beams, stand column base plates, back foot supports, base embedded plates and concrete bases. The concrete base is fixedly arranged on a road surface, and a base embedded plate is arranged at the top of the concrete base; the stand column base plate, the base embedded plate and the concrete base are connected into a whole through bolts. The guardrail stand columns are fixedly arranged on the tops of the stand column base plates. The guardrail cross beam is fixedly arranged at the front end of the guardrail stand column through bolts. The front end of the top of the back foot support is fixedly connected with the guardrail stand column. According to the temporary anti-collision steel guardrail, the concrete base serves as a bottom balance weight, other components are made of steel materials, the overall structural strength is enhanced, stability is high, the anti-collision capacity is high, driving safety of an expressway can be guaranteed, meanwhile, the components are fastened through bolts and can be rapidly disassembled and assembled, and the temporary anti-collision steel guardrail is convenient to use. And the traffic passage is not influenced.

Description

TECHNICAL FIELD

[0001] The embodiment of the utility model belongs to the technical field of temporary guardrail, more particularly, relate to a kind of bridge temporary crashproof steel guardrails for reconstruction and extension project. BACKGROUND

[0002] In recent years, the reconstruction and extension project of domestic highway grows rapidly, unlike the simple new project and the large and medium repair project in operation period, the construction organization of reconstruction and extension project is more complex, and the safety protection is more difficult. The reconstruction and extension project generally adopts the operation mode of "vehicle passing and construction simultaneously". Since the operation in the construction area is carried out under the condition of uninterrupted operation, and the vehicle running speed in the operation area is high, therefore, a safe and reliable temporary guardrail needs to be set between the construction area and the operation area to reduce the probability of accident vehicles entering the construction area and reduce secondary accidents.

[0003] The existing temporary guardrail is basically spliced by welding, which is generally not detachable and cannot be moved after arrangement. The staff needs to spend a lot of time on the arrangement of temporary guardrail, which is dangerous itself due to long arrangement time. In addition, the vehicle driving speed on highway is very fast, which can generate suction force on the objects around the vehicle body. If the temporary guardrail is too light, it may be overturned due to external factors.

[0004] Therefore, in order to solve the above problems, an urgent need for a bridge temporary crashproof steel guardrail for reconstruction and extension project at present, which has strong stability, can ensure the safety of highway driving, and can be quickly disassembled and installed, without affecting traffic. SUMMARY

[0005] In view of the problems of difficult installation and disassembly and easy overturning of the prior art temporary guardrail, the utility model provides a bridge temporary crashproof steel guardrail for reconstruction and extension project to solve such problems.

[0006] In order to achieve the above purpose, the utility model provides a bridge temporary crashproof steel guardrail for reconstruction and extension project, which comprises a concrete base fixed on the road surface, and a base embedded plate is embedded at the top of the concrete base; a column seat plate connected with the base embedded plate and the concrete base by bolts; a guardrail column fixed on the top of the column seat plate, and a plurality of guardrail cross beams are fixed on the front end of the guardrail column by bolts; a back brace fixed on the road surface, and the upper end of the back brace is attached to the guardrail column, and the lower end of the back brace is attached to the rear end of the concrete base.

[0007] Further, the back foot support supports the rear end of the guardrail post and the concrete base, which comprises a bottom plate, a top plate, a support plate and a stiffening plate, the support plate is an L-shaped plate, the upper end of which is attached to the guardrail post, the lower end of which is attached to the rear end of the concrete base, the bottom is vertically fixed on the bottom plate, and the top is vertically arranged on the bottom of the top plate; the bottom plate is fixed on the road surface by expansion bolts; the top and bottom of the stiffening plate are fixedly connected with the top plate and the bottom plate respectively, and the front end is fixedly connected with the support plate, thereby increasing the overall structural strength of the back foot support.

[0008] Further, the upper end of the support plate is fixedly connected with the guardrail post by bolts.

[0009] Further, a plurality of first through holes are formed in the concrete base, and a beam bottom embedded bar is arranged in the first through hole, the beam bottom embedded bar is embedded in the corresponding position of the road surface, a threaded portion is arranged at the upper end of the beam bottom embedded bar, and the concrete base is fixed on the road surface by being fixedly connected with a nut after passing through the concrete base.

[0010] Further, a plurality of groups of screw sleeves are embedded in the concrete base, and the guardrail post and the concrete base are connected as a whole by sequentially passing through the column seat plate, the base embedded plate and the screw sleeve threaded connection through the column bolt.

[0011] Further, two groups of guardrail posts are fixedly arranged on the top of the concrete base, and a plurality of groups of first threaded holes are arranged from top to bottom at the front end of the column body, the first threaded holes are fixedly connected with the cross beam bolt through threaded connection, thereby fixing a plurality of groups of parallel arranged guardrail cross beams on the front end of the guardrail post.

[0012] Further, a plurality of groups of guardrail cross beams are arranged in parallel, and adjacent guardrail cross beams at the same height are fixedly connected through a splicing sleeve, thereby connecting a plurality of groups of guardrails as a whole.

[0013] Further, the bottom of the concrete base is provided with a rubber support.

[0014] Overall, compared with the prior art, the above technical scheme conceived by the present application can achieve the following beneficial effects:

[0015] (1) The temporary anti-collision steel guardrail of the present application uses a concrete base as a bottom counterweight to enhance the stability of the overall structure, and the guardrail post, guardrail cross beam and other components are made of steel material to ensure that the guardrail has strong anti-collision ability and can effectively ensure the safety of highway driving.

[0016] (2) The temporary anti-collision steel guardrail of the present application uses bolts to fasten the components, which allows the guardrail to be quickly disassembled and installed, does not cause long-term interference to traffic, improves construction efficiency, and also reduces safety risks during construction.

[0017] (3) The temporary anti-collision steel guardrail of the utility model, the design takes into account the problem that the high-speed vehicle driving speed is fast and may generate suction force on surrounding objects, through the combined use of the concrete base and the steel material, it is ensured that the guardrail can remain stable even under the suction force generated by high-speed driving and is not prone to overturning, and the special use environment of the highway is adapted.

[0018] (4) The temporary anti-collision steel guardrail of the utility model, the concrete base bottom is provided with a rubber support, long-term vibration caused by driving is isolated from being conducted to the guardrail, and the guardrail vibration loosening and abnormal sound are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is a structure schematic view of the bridge temporary anti-collision steel guardrail for reconstruction and expansion engineering in the utility model embodiment.

[0020] Fig. 2 It is an exploded schematic view of the anti-collision steel guardrail in the utility model embodiment.

[0021] Fig. 3 It is a structure schematic view of the back foot support in the utility model embodiment.

[0022] In all the drawings, the same reference signs represent the same technical features, specifically: 1-guardrail upright, 2-guardrail crossbeam, 3-crossbeam bolt, 4-upright base plate, 5-back foot support, 501-bottom plate, 502-top plate, 503-supporting plate, 504-stiffening plate, 6-upright bolt, 7-base embedded plate, 8-concrete base, 9-rubber support reserved hole, 10-rubber support, 11-beam bottom embedded bar. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as there is no conflict.

[0024] For example, Figs. 1-3The utility model provides a kind of bridge temporary anti-collision steel guardrails for reconstruction project, including guardrail upright 1, guardrail crossbeam 2, upright seat plate 4, back foot brace 5, base embedded plate 7 and concrete base 8.The concrete base 8 is fixed on road surface, and its top is embedded with base embedded plate 7;The upright seat plate 4 is integrated with base embedded plate 7 and concrete base 8 by bolt;The guardrail upright 1 is fixed on the top of upright seat plate 4 by welding;The guardrail crossbeam 2 is fixed on the front end of guardrail upright 1 by bolt;The back foot brace 5 is fixed on road surface, and its top front end is fixedly connected with guardrail upright 1, so as to enhance the structural strength and anti-collision ability of guardrail upright 1.The temporary anti-collision steel guardrail of the utility model uses concrete base 8 as bottom counterweight, other components are made of steel material, which enhances the overall structural strength, is stable, has strong anti-collision ability, can ensure the safety of highway driving, and can be quickly disassembled and installed by bolt fastening between components, without affecting traffic.

[0025] In the utility model embodiment, the concrete base 8 is used as the bottom counterweight of the guardrail, which can effectively increase the overall stability of the guardrail, and the concrete base 8 is precast and formed, and is hoisted to the construction road surface by a crane, a plurality of first through holes are formed in the concrete base 8, a beam bottom embedded bar 11 is arranged in the first through hole, the beam bottom embedded bar 11 is embedded in the corresponding position of the road surface, a threaded portion is arranged at the upper end of the beam bottom embedded bar 11, and the concrete base 8 is fixed on the road surface by being fixedly connected with a nut after passing through the concrete base 8. Further, a plurality of groups of screw sleeves are embedded in the concrete base 8, and the upright seat plate 4 is fixed on the top of the concrete base 8 by screw connection.

[0026] The base embedded plate 7 is fixed on the top of the concrete base 8 and is formed together with the concrete base 8. Further, a plurality of groups of second through holes and third through holes are arranged on the base embedded plate 7, the second through hole corresponds to the first through hole, the beam bottom embedded bar 11 can pass through the first through hole and the second through hole in sequence and extend above the base embedded plate 7, and the concrete base 8 is fixed on the road surface by being threadedly connected with a nut. The third through hole corresponds to the screw sleeve, and the upright bolt 6 is threadedly connected with the screw sleeve in the concrete base 8 by passing through the third through hole, so that the upright seat plate 4 is quickly fixed on the base embedded plate 7.

[0027] In the utility model embodiment, the upright seat plate 4 is used for increasing the stress area at the bottom of the guardrail upright 1 and providing a connecting and fixing hole, the top of the upright seat plate 4 is integrated with the guardrail upright 1 by welding, fourth through holes are formed at the four corners of the upright seat plate 4, the upright bolt 6 is threadedly connected with the screw sleeve embedded in the concrete base 8 by passing through the fourth through hole and the third through hole in sequence, so that the guardrail upright 1 is integrated with the concrete base 8, and the structural strength of the guardrail is enhanced.

[0028] The guardrail post 1 is fixed with two groups on the top of the concrete base 8, the front end of the post body is provided with a plurality of groups of first threaded holes from top to bottom, the first threaded holes are threadedly connected with the beam bolt 3, thereby fixing a plurality of parallel arranged guardrail beams 2 on the front end of the guardrail post 1.

[0029] The guardrail beam 2 is provided with a plurality of groups in parallel, is fixed on the front end of the guardrail post 1 through the beam bolt 3, is connected and fixed between adjacent guardrail beams 2 of the same height through the splicing sleeve, thereby connecting a plurality of guardrails into one, so as to ensure the safety of driving on the highway.

[0030] As shown in the drawings, Fig. 3 The back support 5 supports the rear end of the guardrail post 1 and the concrete base 8, and comprises a bottom plate 501, a top plate 502, a support plate 503 and a stiffening plate 504, the support plate 503 is an L-shaped plate, the upper end of the support plate 503 is attached to the guardrail post 1, the lower end of the support plate 503 is attached to the rear end of the concrete base 8, the bottom of the support plate 503 is vertically fixed on the bottom plate 501, and the top of the support plate 503 is vertically arranged on the bottom of the top plate 502; the bottom plate 501 is fixed on the road surface through the expansion bolt; the top and bottom of the stiffening plate 504 are fixedly connected with the top plate 502 and the bottom plate 501 respectively, and the front end of the stiffening plate 504 is fixedly connected with the support plate 503, thereby increasing the structural strength of the back support 5. Further, the upper end of the support plate 503 is fixedly connected with the guardrail post 1 through the bolt, which can quickly transmit the impact kinetic energy to the road surface, and can prevent the vibration of the road surface from causing impact between the support plate 503 and the guardrail post 1 to generate abnormal sound.

[0031] Preferably, in order to prevent long-term vibration caused by driving from being transmitted to the guardrail and causing the guardrail to vibrate and emit abnormal sound, the bottom of the concrete base 8 is provided with a rubber support 10, the rubber support 10 is provided with a fifth through hole, and the beam bottom embedded bar 11 passes through the fifth through hole or is fixedly positioned on the rubber support 10.

[0032] When the temporary anti-collision steel guardrail is installed, the beam bottom embedded bar 11 is installed at the corresponding position on the road surface; the concrete base 8 is hoisted to the installation position on the road surface, the beam bottom embedded bar 11 can pass through the rubber support 10 and the concrete base 8 in turn and protrude above the base embedded plate 7, the top of the concrete base 8 is fixed on the road surface through the threaded connection with the nut; the guardrail post 1 is fixed on the top of the concrete base 8 through the threaded connection of the post bolt 6 with the screw sleeve after the post bolt 6 passes through the post seat plate 4 and the base embedded plate 7; a plurality of guardrail beams 2 are fixed in parallel on the front end of the guardrail post 1 through the beam bolt 3; adjacent guardrail beams 2 of the same height are connected and fixed through the splicing sleeve; the back support 5 is placed on the road surface, the upper end of the back support 5 is attached to the guardrail post 1, and the lower end of the back support 5 is attached to the rear end of the concrete base 8; the bottom plate 501 is fixed on the road surface through the expansion bolt, and the upper end of the support plate 503 is fixedly connected with the guardrail post 1 through the bolt; thereby completing the installation of the temporary anti-collision steel guardrail.

[0033] The temporary anti-collision steel guardrail has the concrete base 8 as the bottom counterweight, the stability of the overall structure is enhanced, meanwhile, the guardrail upright 1, the guardrail cross beam 2 and other components are made of steel material, the anti-collision ability of the guardrail is ensured, and the driving safety of the expressway can be effectively ensured.

[0034] The temporary anti-collision steel guardrail fastens the components through bolts, the design allows the guardrail to be quickly disassembled and installed, the traffic is not interfered for a long time, the construction efficiency is improved, and the safety risk in the construction process is reduced.

[0035] The temporary anti-collision steel guardrail considers the problem that the high-speed vehicle driving speed is high and may generate suction force on surrounding objects, the combination of the concrete base 8 and the steel material is used, the stability of the guardrail under the suction force generated by high-speed driving is ensured, the guardrail is not prone to overturning, and the special use environment of the expressway is adapted.

[0036] The temporary anti-collision steel guardrail is provided with the rubber support 10 at the bottom of the concrete base 8, long-term vibration caused by driving is isolated from being conducted to the guardrail, and the guardrail is prevented from vibrating, loosening and emitting abnormal sound.

[0037] Those skilled in the art can easily understand that the above description is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection range of the utility model.

Claims

1. A temporary anti-collision steel guardrail for bridges used in renovation and expansion projects, characterized in that: include: A concrete base (8) is fixedly arranged on the road surface, and a base embedded plate (7) is pre-embedded on the top of the concrete base; A column base plate (4) connected to the base embedded plate (7) and the concrete base (8) by bolts; A guardrail column (1) is fixedly arranged on the top of the column base plate (4), and a plurality of groups of guardrail beams (2) are fixed on the front end thereof by bolts; The back foot support (5) is fixedly arranged on the road surface, and its upper end is in contact with the guardrail column (1), and its lower end is in contact with the rear end of the concrete base (8).

2. The temporary anti-collision steel guardrail for bridge renovation and expansion projects according to claim 1 is characterized in that: The back foot support (5) supports the guardrail column (1) and the rear end of the concrete base (8), and includes a bottom plate (501), a top plate (502), a support plate (503) and a stiffening plate (504). The support plate (503) is an L-shaped plate, the upper end of which is in contact with the guardrail column (1), the lower end of which is in contact with the rear end of the concrete base (8), the bottom of which is vertically fixed on the bottom plate (501), and the top of which is vertically arranged on the bottom of the top plate (502); the bottom plate (501) is fixed on the road surface by expansion bolts; the top and bottom of the stiffening plate (504) are fixedly connected to the top plate (502) and the bottom plate (501) respectively, and the front end is fixedly connected to the support plate (503), thereby increasing the overall structural strength of the back foot support (5).

3. The temporary anti-collision steel guardrail for bridge renovation and expansion projects according to claim 2 is characterized in that: The upper end of the support plate (503) is fixedly connected to the guardrail post (1) via bolts.

4. A temporary anti-collision steel guardrail for bridge reconstruction and expansion projects according to any one of claims 1 to 3, characterized in that: The concrete base (8) is provided with a plurality of first through holes, wherein beam bottom embedded reinforcement (11) is passed through the first through holes. The beam bottom embedded reinforcement (11) is pre-buried in a corresponding position of the road surface, and a threaded portion is provided at the upper end thereof. After passing through the concrete base (8), the concrete base (8) is fixedly connected with a nut, thereby fixing the concrete base (8) on the road surface.

5. A temporary anti-collision steel guardrail for bridge reconstruction and expansion projects according to any one of claims 1 to 3, characterized in that: The concrete base (8) is pre-embedded with multiple sets of screw sleeves, and the guardrail post (1) and the concrete base (8) are connected as a whole by using column bolts (6) to sequentially pass through the column base plate (4), the base pre-embedded plate (7) and the screw sleeves for threaded connection.

6. A temporary anti-collision steel guardrail for bridge reconstruction and expansion projects according to any one of claims 1 to 3, characterized in that: Two groups of guardrail columns (1) are fixed on the top of the concrete base (8), and multiple groups of first threaded holes are provided from top to bottom at the front end of the column body. The first threaded holes are threadedly connected to the beam bolts (3), thereby fixing multiple groups of parallel guardrail beams (2) to the front end of the guardrail columns (1).

7. A temporary anti-collision steel guardrail for bridge reconstruction and expansion projects according to any one of claims 1 to 3, characterized in that: The guardrail crossbeams (2) are provided in multiple groups in parallel, and adjacent guardrail crossbeams (2) at the same height are connected and fixed by splicing sleeves, thereby connecting multiple groups of guardrails into one.

8. A temporary anti-collision steel guardrail for a bridge used in a renovation and expansion project according to any one of claims 1 to 3, characterized in that: A rubber support (10) is provided at the bottom of the concrete base (8).

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