CN219364319U

CN219364319U - Prefabricated bridge anti-collision guardrail and mounting structure thereof

Info

Publication number: CN219364319U
Application number: CN202320344551.4U
Authority: CN
Inventors: 胡云耀; 任新建
Original assignee: Changsha Institute Of Planning And Surveying
Current assignee: Changsha Institute Of Planning And Surveying
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-07-18
Anticipated expiration: 2033-02-28

Abstract

The utility model relates to a prefabricated bridge anti-collision guardrail, which belongs to the technical field of bridge protection and comprises a guardrail body, wherein a plurality of connecting assemblies for fixedly connecting with a bridge are embedded in the guardrail body along the length direction of the guardrail body; the connecting assembly comprises a fixing nut, a protective cover, a sleeve and a connecting rod, wherein a threaded opening on one side of the fixing nut is sealed through the protective cover, a threaded opening on the other side of the fixing nut is connected with the sleeve, the fixing nut, the protective cover and the sleeve are all embedded in the guardrail body, and the connecting rod penetrates through the sleeve to be in threaded connection with the fixing nut. The sleeve in the connecting component can separate the connecting rod from the connecting component without being integrally poured with the guardrail, so that the connecting rod is convenient to adjust in the installation process. Therefore, the design of the connecting component reduces the requirement on the precision of the embedded part, improves the controllability of the mounting precision of the guardrail and reduces the construction difficulty.

Description

Prefabricated bridge anti-collision guardrail and mounting structure thereof

Technical Field

The utility model relates to the technical field of bridge protection, in particular to a prefabricated bridge anti-collision guardrail and an installation structure thereof.

Background

At present, in order to promote the transformation and upgrading of bridge industry in China and realize green development, cyclic development, low-carbon development and high-quality development, bridge construction is being promoted, and standardized design, industrial production, assembly construction, informatization management and intelligent application are being promoted.

The existing prefabricated assembly type concrete anti-collision guardrail connecting mode has the following defects:

1. the construction process of the part of the prefabricated concrete anti-collision guardrail connecting part still adopts a cast-in-place concrete connecting mode, the construction process is relatively complex, and the construction site still has larger pollution;

2. the connecting part of the partial prefabricated concrete anti-collision guardrail adopts a welding mode, so that the on-site welding workload is large, and the welding quality is difficult to control;

3. the prefabrication and installation precision requirement of the connecting part of the partially prefabrication and assembly type concrete anti-collision guardrail is high, and the adjustment and control are difficult;

4. the environmental noise pollution control is not considered integrally, and the implementation of adding the sound barrier in the later stage is difficult.

In summary, how to quickly realize the green construction of the bridge guardrail, simplify the process, improve the durability of the bridge guardrail, and meet the installation requirement of the sound barrier is a problem to be solved in the current rapid assembly bridge field.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the prefabricated bridge anti-collision guardrail with more reasonable design and simple construction and the mounting structure thereof.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a prefabricated bridge anti-collision guardrail, which comprises a guardrail body, wherein a plurality of connecting components used for fixedly connecting with a bridge are embedded in the guardrail body along the length direction of the guardrail body;

the connecting assembly comprises a fixing nut, a protective cover, a sleeve and a connecting rod, wherein a threaded opening on one side of the fixing nut is sealed through the protective cover, a threaded opening on the other side of the fixing nut is connected with the sleeve, the fixing nut, the protective cover and the sleeve are all embedded in the guardrail body, and the connecting rod penetrates through the sleeve to be in threaded connection with the fixing nut.

In a preferred embodiment of the present utility model, the bottom of the guardrail body is provided with a concave shear groove along the length direction thereof.

In a preferred embodiment of the utility model, the connecting rod passes through the concave shear groove.

In a preferred embodiment of the utility model, the connecting rod is a high-strength steel rod, and connecting threads are arranged at two ends of the connecting rod.

In a preferred embodiment of the present utility model, two sides of the guardrail body are respectively provided with a convex shearing groove and a concave shearing groove, and two adjacent guardrail bodies are connected in a matched manner through the convex shearing grooves and the concave shearing grooves.

In a preferred embodiment of the present utility model, a plurality of U-bolts are further embedded at the top of the guardrail body as installation anchor bolts of the sound barrier.

The mounting structure of the prefabricated bridge anti-collision guardrail is characterized in that the prefabricated bridge anti-collision guardrail is adopted, the convex shear groove matched with the concave shear groove is arranged at the position of the bridge deck, through holes connected with connecting rods are formed in the position of the guardrail, and the connecting rods penetrate through the through holes and are fastened by tensioning nuts in a threaded mode.

In a preferred embodiment of the utility model, spiral steel bars and backing plates are pre-buried on the back of the bridge at the position of each through hole.

In a preferred embodiment of the present utility model, the exposed end of the connecting rod is provided with a protective cap.

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

1. according to the utility model, the guardrail is fixedly installed through the bridge deck and the tensioning nut by the connecting assembly pre-embedded in the guardrail, so that the installation structure is simple and reliable; the design of the sleeve in the connecting component can separate the connecting rod from the connecting component without casting the connecting rod and the guardrail into a whole, so that the connecting rod is convenient to adjust in the installation process. Therefore, the design of the connecting component reduces the requirement on the precision of the embedded part, improves the controllability of the mounting precision of the guardrail and reduces the construction difficulty;

2. the guardrail and the bridge deck are mutually matched through the concave and convex shearing grooves, so that the guardrail is propped against the convex shearing grooves of the bridge deck, falling is not easy to occur, the shearing resistance is effectively improved, the guardrail and the bridge deck are connected through the connecting assembly, the connection strength of the guardrail and the bridge deck is ensured, and meanwhile, the durability of the structure is relatively improved;

3. the adjacent two guardrails are connected in a matched manner through the convex shearing grooves and the concave shearing grooves, so that the cooperative work of the guardrail sections is ensured when a vehicle collides;

4. the U-shaped bolt pre-buried at the top of the guardrail can be used as a lifting point in lifting construction on one hand, and can be matched with a lifting ring nut to realize lifting; on the other hand, after the guardrail is installed, the guardrail is used as a sound barrier for installing an anchor bolt, so that the difficulty that the sound barrier needs to be temporarily drilled and expansion bolts are avoided in the later stage, and the integrated and convenient consideration of environmental noise pollution control is realized.

Drawings

For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

fig. 1 is a sectional view of an installation structure of a prefabricated bridge crash barrier provided by the present utility model;

FIG. 2 is a side view provided in FIG. 1;

FIG. 3 is a schematic view of the prefabricated bridge crash barrier provided in FIG. 1;

FIG. 4 is a bottom view of the pre-assembled bridge crash barrier provided in FIG. 3;

fig. 5 is a partial enlarged view of a mounting structure of a prefabricated bridge crash barrier provided by the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

The embodiment provides a prefabricated bridge anti-collision guardrail, as shown in fig. 1, including guardrail body 1, the guardrail body 1 is interior to be embedded with a plurality of coupling assembling that are used for with bridge fixed connection along its length direction, is preferably equipped with 2 ~ 4 coupling assembling, is equipped with 4 equidistant coupling assembling on the guardrail body of this embodiment as shown in fig. 2.

Preferably, as shown in fig. 1, the connecting assembly in this embodiment includes a fixing nut 2, a protecting cover 3, a sleeve 4 and a connecting rod 5, wherein a threaded opening on one side of the fixing nut 2 is sealed by the protecting cover 3, a threaded opening on the other side is connected with the sleeve 4, the fixing nut 2, the protecting cover 3 and the sleeve 4 are all pre-buried in the guardrail body 1, and the connecting rod 5 passes through the sleeve 4 and is in threaded connection with the fixing nut 2; the connecting rod 5 in this embodiment is a high-strength steel rod, and two ends of the connecting rod are provided with connecting threads. The design of the sleeve in the connecting assembly in the embodiment can separate the connecting rod from the connecting assembly without casting the connecting rod and the guardrail into a whole, so that the connecting rod is convenient to adjust in the installation process. Therefore, the design of the connecting component reduces the requirement on the precision of the embedded part, improves the controllability of the mounting precision of the guardrail and reduces the construction difficulty.

Preferably, as shown in fig. 1, the bottom of the guardrail body 1 in this embodiment is provided with a concave shear groove 1.0 along the length direction thereof, and the connecting rod 5 passes through the concave shear groove 1.0; correspondingly, the bridge deck 100 is provided with convex shear grooves 100.1 matched with the concave shear grooves 1.0 at the positions where the guardrails are arranged. The guardrail is mutually matched with the bridge deck connection surface through the concave shear groove and the convex shear groove, so that the guardrail is propped against by the bridge deck convex shear groove, falling off is not easy to occur, the shearing resistance is effectively improved, the guardrail is connected with the bridge deck through the connection assembly, the connection strength of the guardrail and the bridge deck is ensured, and meanwhile, the durability of the structure is relatively improved.

Preferably, as shown in fig. 3 and fig. 4, two sides of the guardrail body 1 in this embodiment are respectively provided with a convex shearing groove 1.1 and a concave shearing groove 1.2, and two adjacent guardrail bodies 1 are cooperatively connected through the convex shearing groove 1.1 and the concave shearing groove 1.2, so that cooperative work of each guardrail section during vehicle collision is ensured.

Further, as shown in fig. 1, in this embodiment, a plurality of U-shaped bolts 6 are pre-embedded at the top of the guardrail body 1, and serve as installation anchor bolts of the sound barrier, where the U-shaped bolts can be used as lifting points in lifting construction on one hand, and can be matched with lifting ring nuts to realize lifting; on the other hand, after the guardrail is installed, the guardrail is used as a sound barrier for installing an anchor bolt, so that the difficulty that the sound barrier needs to be temporarily drilled and expansion bolts are avoided in the later stage, and the integrated and convenient consideration of environmental noise pollution control is realized.

Example two

The embodiment provides a mounting structure of a prefabricated bridge anti-collision guardrail, as shown in fig. 1, the mounting structure adopts the prefabricated bridge anti-collision guardrail in the first embodiment, a convex shear groove matched with the concave shear groove is arranged at the position where the guardrail is mounted on a bridge deck 100, a through hole 100.2 connected with a connecting rod 5 is arranged at the position where the guardrail is mounted, and the connecting rod 5 passes through the through hole 100.2 and is fastened by a tensioning nut 7 in a threaded manner.

Preferably, as shown in fig. 5, a spiral steel bar 8 and a backing plate 9 are pre-embedded at the position of each through hole 100.2 on the back surface of the bridge, wherein the spiral steel bar can increase the structural strength of the through holes, and the backing plate is used as a stress point of a tensioning nut.

Preferably, the exposed end of the connecting rod 5 is provided with a protective cap 10 for protecting the connecting rod.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present utility model.

Claims

1. The utility model provides a prefabricated bridge anticollision barrier, includes guardrail body, its characterized in that:

a plurality of connecting components for fixedly connecting with the bridge are embedded in the guardrail body along the length direction of the guardrail body;

2. The pre-assembled bridge crash barrier of claim 1 wherein: the bottom of guardrail body is equipped with concave type shear force groove along its length direction.

3. The pre-assembled bridge crash barrier of claim 2 wherein: the connecting rod passes through the concave shear groove.

4. The pre-assembled bridge crash barrier of claim 1 wherein: the connecting rod adopts a high-strength steel rod, and connecting threads are arranged at two ends of the connecting rod.

5. The pre-assembled bridge crash barrier of claim 1 wherein: the two sides of the guardrail body are respectively provided with a convex shearing groove and a concave shearing groove, and two adjacent guardrail bodies are connected in a matched mode through the convex shearing grooves and the concave shearing grooves.

6. The pre-assembled bridge crash barrier of claim 1 wherein: the top of guardrail body still pre-buried has a plurality of U type bolts, as the installation anchor bolt of sound barrier.

7. The utility model provides a mounting structure of prefabricated bridge anticollision barrier which characterized in that: the prefabricated bridge anti-collision guardrail according to any one of claims 2 to 6 is adopted, wherein the bridge deck is provided with a convex shear groove matched with the concave shear groove at the position where the guardrail is installed, a through hole connected with a connecting rod is arranged, and the connecting rod passes through the through hole and is fastened by a tensioning nut in a threaded manner.

8. The mounting structure of a prefabricated bridge crash barrier as recited in claim 7 wherein: spiral bars and backing plates are pre-buried at the positions of the back surfaces of the bridges, which are positioned at the through holes.

9. The mounting structure of a prefabricated bridge crash barrier as recited in claim 7 wherein: the exposed end of the connecting rod is provided with a protective cap.