Middle division zone anti-collision guardrail with prefabricated UHPC formwork filled with concrete

Abstract

The utility model discloses a middle division zone anti-collision guardrail with prefabricated UHPC (Ultra High Performance Concrete) formworks filled with concrete, which belongs to the technical field of bridge guardrails and comprises a sleeper beam and the UHPC formworks mounted on two sides of the top of the sleeper beam, two groups of supporting blocks are arranged between the two groups of UHPC formworks and are positioned on two sides, close to each other, of the two groups of UHPC formworks; a U-shaped connecting piece is arranged on the supporting block, the U-shaped connecting piece is located between the two sets of UHPC formworks, the U-shaped connecting piece is connected with the two sets of UHPC formworks through a connecting device, a plurality of sets of pouring holes are formed in top plates of the UHPC formworks at equal intervals, and filling plain concrete is poured in the pouring holes. According to the middle division zone guardrail structure, the occupied area is reduced, and the influence on traffic is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge guardrail technical field especially relates to a prefabricated UHPC formwork inner filling concrete's middle split area crash barrier. BACKGROUND

[0002] The crash barrier of the middle split area of the bridge is arranged at the middle split area of the bridge, thereby controlling the driving direction of the vehicle and preventing the vehicle from entering the opposite lane.

[0003] The road traffic in China develops extremely fast, and many third-class highways and second-class highways urgently need to increase lanes to meet the demand, since the middle split area is not arranged in the road before the rectification, and a single yellow line or double yellow line is used, the road with such dense traffic exists great safety hidden danger, and the arrangement of the ordinary middle split area exists that the land area is relatively large, the originally not wide road surface is wasted, and there are problems of long construction period and influence on traffic. CONTENT OF THE UTILITY MODEL

[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to provide a prefabricated UHPC formwork inner filling concrete middle split area crash barrier structure which has sufficient guardrail strength, reduces the land area, and reduces the influence on traffic.

[0005] In order to achieve the purpose, the utility model adopts the following technical scheme:

[0006] The utility model provides a prefabricated UHPC formwork inner filling concrete middle split area crash barrier, including a pillow beam and UHPC formwork installed on both sides of the top of the pillow beam, two groups of support blocks are arranged between the two groups of UHPC formwork, the two groups of support blocks are located on the two sides of the two groups of UHPC formwork close to each other, a U-shaped connecting piece is arranged on the support block, the U-shaped connecting piece is located between the two groups of UHPC formwork, the U-shaped connecting piece is connected with the two groups of UHPC formwork through a connecting device, a plurality of groups of pouring holes are arranged at equal intervals on the top plate of the UHPC formwork, and inner filling concrete is poured in the pouring holes.

[0007] The utility model optimizes the technical scheme in that the connecting device includes a pre-buried bolt, the pre-buried bolt connects the UHPC formwork and the U-shaped connecting piece, one end of the pre-buried bolt passes through the UHPC formwork and is provided with an anchor steel plate, the anchor steel plate is located in the UHPC formwork, the other end of the pre-buried bolt is provided with a connecting square steel, the side, away from the anchor steel plate, of the connecting square steel is provided with a nut, the nut is screwed with the pre-buried bolt, and a backing plate is arranged between the nut and the connecting square steel.

[0008] The utility model optimizes the technical scheme in that the anchor steel plate is provided with at least two groups of anchor steel bars.

[0009] The utility model discloses preferably technical scheme lies in, two groups UHPC formwork between being provided with planting soil, planting soil top with UHPC formwork top flush.

[0010] The utility model discloses preferably technical scheme lies in, the pillow beam with two groups UHPC formwork between fixed connection through connecting bolt.

[0011] The utility model discloses preferably technical scheme lies in, be provided with the anti-climbing ridge on the UHPC formwork crash face.

[0012] Compared with prior art, the utility model has the beneficial effects that:

[0013] The utility model adopts UHPC formwork as permanent form, and cooperates the inner filling concrete of pouring, and the cooperation of U type connecting piece and connecting device, effectively improves the use intensity of guardrail, and greatly promotes the safety protection ability of guardrail.

[0014] The utility model replaces the traditional reinforcement connection setting mode, greatly saves the application of steel material, and simultaneously avoids the engineering quantity of reinforcement binding, realizes the double saving of labor cost and material cost.

[0015] The utility model greatly reduces construction control time through semi-precast, realizes efficient construction in installation and removal process, can greatly reduce the influence to traffic, and greatly improves the construction efficiency of scene. DRAWINGS

[0016] Figure 1 It is the central separation zone guardrail structure bottom view provided in the specific embodiment of the utility model,

[0017] Figure 2 It is the central separation zone guardrail structure plan view provided in the specific embodiment of the utility model,

[0018] Figure 3 It is the central separation zone guardrail structure side view provided in the specific embodiment of the utility model,

[0019] Figure 4 It is the connecting structure schematic view provided in the specific embodiment of the utility model,

[0020] In the drawings, the component list represented by each sign is as follows:

[0021] 1, UHPC formwork;2, inner filling concrete;3, support block;4, planting soil;5, connecting device;51, anchor steel plate;52, pre-buried bolt;53, anchor reinforcement;54, pad;55, nut;56, connecting square steel;6, pouring hole;7, pillow beam;8, connecting bolt;9, U type connecting piece. SPECIFIC EMBODIMENT

[0022] The technical scheme of the utility model is further illustrated below in combination with the drawings and through specific embodiments.

[0023] A kind of prefabricated UHPC formwork inner filling concrete's middle division zone crash barrier, including pillow beam 7 and the UHPC formwork 1 installed in the top of pillow beam 7 both sides, two groups of the UHPC formwork 1 between described UHPC formwork 1 are provided with two groups of support block 3, two groups of the support block 3 are located in the two sides of two groups of UHPC formwork 1 mutually close, U-shaped connecting piece 9 is provided on the support block 3, the U-shaped connecting piece 9 is located between two groups of UHPC formwork 1, the U-shaped connecting piece 9 is connected with two groups of UHPC formwork 1 by connecting device 5, the top plate of the UHPC formwork 1 is provided with multiple groups of pouring hole 6 at equal intervals, inner filling concrete 2 is poured in the pouring hole 6, and a kind of planting soil 4 is provided between two groups of the UHPC formwork 1.

[0024] Before use, first prefabricate UHPC formwork 1, support block 3 and pillow beam 7 in factory, and process connecting device 5, when installing in construction site, first install pillow beam 7 in specified position, then in turn install UHPC formwork 1 in the top of pillow beam 7 both sides, place support block 3 between two groups of UHPC formwork 1, and set up a group on the top of pillow beam 7 both sides, install U-shaped connecting piece 9 on the top of support block 3, finally connect U-shaped connecting piece 9 and UHPC formwork 1 by connecting device 5, to strengthen the longitudinal connection of UHPC formwork 1, then pour inner filling concrete 2 into pouring hole 6, and wait for concrete to coagulate, which process is equivalent to cast-in-place concrete guardrail, can greatly shorten construction time, realize the purpose of efficient construction;

[0025] When the guardrail on highway is damaged due to vehicle jumping over guardrail, vehicle rollover accident and the like, only need to spray UHPC on damaged part, and smooth, more serious damage only needs to remove segment UHPC formwork 1, without removing the whole guardrail, avoid causing a large amount of material waste, and the construction process is semi-prefabricated construction, can greatly reduce construction time, realize efficient construction, reduce the influence on traffic, simultaneously, by pouring inner filling concrete 2, U-shaped connecting piece 9 and the setting of connecting device 5, the use strength and protection capacity of guardrail on highway can be enhanced, and the land use area on road surface is reduced.

[0026] As a possible implementation of the present scheme, preferably, the connecting device 5 comprises embedded bolts 52 connecting the UHPC formwork 1 and the U-shaped connecting piece 9, one end of the embedded bolts 52 penetrates through the UHPC formwork 1 and is provided with an anchoring steel plate 51 located inside the UHPC formwork 1, the other end of the embedded bolts 52 is provided with a connecting square steel 56, the connecting square steel 56 is provided with a nut 55 away from one side of the anchoring steel plate 51, the nut 55 is screwed with the embedded bolts 52, a spacer plate 54 is arranged between the nut 55 and the connecting square steel 56, and the anchoring steel plate 51 is provided with at least two groups of anchoring steel bars 53.

[0027] The inner filling concrete 2 poured through the anchoring steel plate 51 and the anchoring steel bar 53 can effectively strengthen the protection ability and use strength of the UHPC formwork 1, and the U-shaped connecting piece 9 connected through the embedded bolts 52, in cooperation with the reinforcing effect of the connecting square steel 56 and the nut 55, further improves the overall anti-collision ability and safety protection ability of the guardrail, and enhances the longitudinal connecting strength of the UHPC formwork 1 and the connecting strength between the UHPC formwork 1 and the inner filling concrete 2.

[0028] As a possible implementation of the present scheme, preferably, the top of the planting soil 4 is flush with the top of the UHPC formwork 1, and the planting soil 4 is filled in the middle gap between the two groups of UHPC formwork 1, in cooperation with the support block 3 added at the bottom, which greatly improves the protection ability of the guardrail during use and reduces the serious damage to the guardrail caused by the vehicle jumping over the guardrail and vehicle rollover accidents on the highway.

[0029] As a possible implementation of the present scheme, preferably, the bolster 7 is fixedly connected between the two groups of UHPC formwork 1 through the connecting bolts 8, and the connecting strength between the bolster 7 and the UHPC formwork 1 is strengthened through the connecting bolts 8, thereby improving the use strength of the overall guardrail.

[0030] As a possible implementation of the present scheme, preferably, the UHPC formwork 1 is provided with a climbing prevention ridge on the impact surface, and the climbing prevention ridge can further enhance the use strength of the UHPC formwork 1, further improve the protection ability of the guardrail, reduce the damage to the guardrail caused by the vehicle jumping over the guardrail and vehicle rollover accidents, and improve the protection ability of the guardrail.

[0031] The present utility model is described through preferred embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the present utility model. The present utility model is not limited by the specific embodiments disclosed herein, and other embodiments falling within the scope of the claims of the present application all belong to the scope of protection of the present utility model.

Claims

1. A median crash barrier with concrete filling inside a precast UHPC mold shell, characterized in that: Includes a pillow beam (7) and UHPC mold shells (1) installed on both sides of the top of the pillow beam (7). Two sets of support blocks (3) are provided between the two sets of UHPC mold shells (1). The two sets of support blocks (3) are located on the two sides of the two sets of UHPC mold shells (1) that are close to each other. U-shaped connectors (9) are provided on the support blocks (3). The U-shaped connectors (9) are located between the two sets of UHPC mold shells (1). The U-shaped connectors (9) are connected to the two sets of UHPC mold shells (1) through a connecting device (5). The top plate of the UHPC mold shell (1) is provided with multiple sets of pouring holes (6) at equal intervals. Plain concrete (2) is poured into the pouring holes (6).

2. The median crash barrier with concrete filling inside a precast UHPC mold according to claim 1, characterized in that: The connecting device (5) includes a pre-embedded bolt (52), which connects the UHPC mold shell (1) and the U-shaped connector (9). One end of the pre-embedded bolt (52) passes through the UHPC mold shell (1) and is provided with an anchoring steel plate (51). The anchoring steel plate (51) is located inside the UHPC mold shell (1). The other end of the pre-embedded bolt (52) is provided with a connecting square steel (56). A nut (55) is provided on the side of the connecting square steel (56) away from the anchoring steel plate (51). The nut (55) is screwed to the pre-embedded bolt (52). A washer (54) is provided between the nut (55) and the connecting square steel (56).

3. A median crash barrier with concrete filling inside a precast UHPC mold according to claim 2, characterized in that: The anchoring steel plate (51) is provided with at least two sets of anchoring steel bars (53).

4. A median crash barrier with concrete filling inside a precast UHPC mold according to claim 1, characterized in that: Planting soil (4) is provided between the two sets of UHPC mold shells (1), and the top of the planting soil (4) is flush with the top of the UHPC mold shell (1).

5. A median crash barrier with concrete filling inside a precast UHPC mold according to claim 1, characterized in that: The pillow beam (7) is fixedly connected to the two sets of UHPC mold shells (1) by connecting bolts (8).

6. A median crash barrier with concrete filling inside a precast UHPC mold according to claim 1, characterized in that: The UHPC mold shell (1) has a climbing barrier on its impact surface.

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