Self-sinking type integrally-assembled bridge foundation scouring protection ring and construction method

Abstract

The invention provides a self-sinking type integrally-assembled bridge foundation scouring protection ring and a construction method, the self-sinking type integrally-assembled bridge foundation scouring protection ring is used for carrying out scouring protection on a pier column foundation on a riverbed surface, the self-sinking type integrally-assembled bridge foundation scouring protection ring comprises a main protection plate and a side protection ring, a first connecting groove is formed in the end of the main protection plate, and a second connecting groove is formed in the side protection ring; the first connecting groove and the second connecting groove are matched to form a cavity for containing a bridge pier column, the shape of the cavity is matched with the section of the bridge pier column, a first connecting assembly connected with the side protective ring is arranged on the main protective plate, and the main protective plate and the side protective ring are detachably connected through the first connecting assembly. The protection ring is installed in an assembled mode, on one hand, the installation position of the protection ring on a riverbed does not affect navigation, on the other hand, punching or slotting in water and fixing of the protection ring are not needed, the installation process is not affected by water flow, the installation difficulty of the protection ring is effectively reduced, and the installation efficiency of the protection ring is improved.

Description

Technical Field

[0001] The invention relates to the technical field of bridge foundation protection, and in particular to a self-sinking integrally assembled bridge foundation scour protection ring and a construction method. Background Art

[0002] The destruction of bridges in floods is an important cause of bridge collapse, among which scouring is a key factor. Scouring causes riverbed erosion and reduces the buried depth of bridge foundations, affecting the bearing capacity and stability of the bridge substructure.

[0003] In order to reduce the impact of scour on bridge damage, various scour protection measures have been adopted at home and abroad. Among them, the retaining ring reduces the velocity and flow of the downward jet from the pile bottom by changing the water flow field, thus reducing the scour depth.

[0004] For example, the Chinese invention patent with patent number CN202210230472.0 provides a method and device for local protection of river bridge foundations. The device leads the water flow with higher flow rate on the surface of the river through a pipe to a place close to the riverbed, and flows out in a direction perpendicular to the direction of the river water flow at the bottom of the bridge pier, interfering with the downward flow in front of the pier that causes local scouring in front of the bridge pier by the moving water flow of the river, thereby destroying the water flow structure of the downward flow in front of the pier, and weakening the intensity of the downward flow in front of the pier and the horseshoe-shaped vortex, thereby achieving the effect of preventing the bridge foundation from scouring.

[0005] However, most of the existing bridge foundation scour protection devices are installed after drilling holes in the foundation. This method is easily affected by water flow when installed under the water surface, making the installation difficult. Therefore, a self-sinking integrally assembled bridge foundation scour protection ring and construction method are proposed to solve the above-mentioned technical problems. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention proposes a self-sinking integrally assembled bridge foundation scour protection ring and construction method to solve the technical problem that most of the existing bridge foundation scour protection devices proposed in the above background technology are installed after drilling holes in the foundation, and this method is easily affected by water flow when installed under the water surface, resulting in difficult installation.

[0007] To achieve the above object, the present invention provides the following technical solution: a self-sinking integrally assembled bridge foundation scour protection ring, which is used to be installed on a bridge pier column on a riverbed, comprising:

[0008] A main guard plate, the end of which is provided with a first connecting groove;

[0009] The side retaining ring is provided with a second connecting groove, wherein the first connecting groove cooperates with the second connecting groove to form a cavity for accommodating the pier column, and the shape of the cavity is adapted to the cross section of the pier column; and

[0010] A first connecting component is disposed on the main guard plate and connected to the side guard ring so as to detachably connect the main guard plate and the side guard ring.

[0011] In a preferred embodiment, the first connecting component includes:

[0012] A first main splicing rib, arranged at an end of the main guard plate;

[0013] A second main splicing rib is provided at an end of the side guard ring; and

[0014] A connecting bolt is connected to the first main splicing rib and the second main splicing rib.

[0015] In a preferred embodiment, both ends of the main guard plate are provided with a first connecting groove, and two groups of side guard rings are provided, and the two groups of side guard rings are respectively arranged at the two ends of the main guard plate, and the second connecting grooves on the two groups of side guard rings respectively cooperate with the two groups of the first connecting grooves to form a cavity for accommodating the bridge pier column.

[0016] In a preferred embodiment, the main guard plate includes a first guard plate and a second guard plate that are arranged opposite to each other, and the first guard plate and the second guard plate are connected via a second connecting assembly.

[0017] In a preferred embodiment, the second connecting assembly includes two groups of auxiliary splicing ribs, the two groups of auxiliary splicing ribs are respectively arranged on the first guard plate and the second guard plate, and the two groups of auxiliary splicing ribs are abutted against each other, and the two groups of auxiliary splicing ribs are connected by connecting bolts.

[0018] A construction method for a self-sinking integrally assembled bridge foundation scour protection ring, using a self-sinking integrally assembled bridge foundation scour protection ring, comprising the following steps:

[0019] The first guard plate, the second guard plate and the side guard ring are prefabricated in the factory;

[0020] The prefabricated first guard plate, second guard plate and side guard ring are transported to the bridge site by car;

[0021] Use a boat to transport the first guard plate, the second guard plate and the side guard rings to the water surface where the bridge is located; and

[0022] Assemble the first guard plate, the second guard plate and the side guard ring.

[0023] In a preferred embodiment, the specific steps of assembling the first guard plate, the second guard plate and the side guard ring are:

[0024] Use the lifting equipment on the ship to lift the first guard plate, the second guard plate and two sets of side guard rings to the sides of the pier column;

[0025] Use connecting bolts to fix the two groups of secondary splicing ribs, so that the first guard plate and the second guard plate are located at the two groups of bridge piers and spliced ​​to form a main guard plate, and the first connecting grooves at both ends of the main guard plate are respectively fitted with the two groups of bridge piers; and

[0026] The first main splicing rib and the second main splicing rib are fixedly connected by using connecting bolts to complete the installation of the side retaining ring, so that the pier column is located in the cavity formed by the first connecting groove and the second connecting groove.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The main guard plate and the side guard ring in the protective ring are processed and assembled in the factory. After the main guard plate and the side guard ring are transported to the bridge site by car, they still need to be transported to the water surface where the bridge is located by boat. The main guard plate and the side guard ring are lifted to the bridge pier column by a small hoist on the ship, and the first connecting groove and the second connecting groove are fitted with the outer surface of the bridge pier column. Finally, the main guard plate and the side guard ring are fixed by the first connecting assembly, and the installation of the protective ring can be completed quickly. After installation, the main guard plate and the side guard ring form a whole and sink underwater until they contact the riverbed surface, which can effectively protect the riverbed of the bridge foundation. After installing the protective ring, the maximum scour pit depth can be reduced by more than 40%, and the vertical near-bottom flow velocity of the water-facing surface of the bridge pier column can be reduced by more than 50%. It adopts an assembled installation. On the one hand, its installation position on the riverbed will not affect navigation. On the other hand, it does not need to drill holes or grooves in the water and fix the protective ring. The installation process will not be affected by the water flow, which effectively reduces its installation difficulty and improves the installation efficiency of the protective ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation of the present invention, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0030] Figure 1 A three-dimensional structural schematic diagram of a self-sinking integrally assembled bridge foundation scour protection ring provided by the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of a self-sinking integrally assembled bridge foundation scour protection ring after being disassembled;

[0032] Figure 3It is a schematic diagram of the installation structure of a self-sinking integrally assembled bridge foundation scour protection ring of the present invention;

[0033] Figure 4 for Figure 3 Top view of the .

[0034] Reference numerals:

[0035] 1. Riverbed surface; 2. Bridge pier column; 3. Main guard plate; 31. First guard plate; 32. Second guard plate; 4. Secondary splicing rib; 5. First main splicing rib; 6. First connecting groove; 7. Side guard ring; 8. Second main splicing rib; 9. Second connecting groove; 10. Connecting bolts. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technicians in this field can make some non-essential improvements and adjustments to the present invention based on the above application content.

[0037] Example:

[0038] like Figures 1 to 4 As shown, the present invention provides a self-sinking integrally assembled bridge foundation scour protection ring, which is used to be installed on a pier column 2 on a riverbed surface 1, and includes a main guard plate 3 and a side guard ring 7. A first connecting groove 6 is provided at the end of the main guard plate 3, and a second connecting groove 9 is provided on the side guard ring 7. The first connecting groove 6 and the second connecting groove 9 cooperate to form a cavity for accommodating the pier column 2, and the shape of the cavity is adapted to the cross-section of the pier column 2. A first connecting component connected to the side guard ring 7 is also provided on the main guard plate 3, and the main guard plate 3 and the side guard ring 7 are detachably connected through the first connecting component. The first connecting component includes a first main splicing rib 5 provided at the end of the main guard plate 3 and a second main splicing rib 8 provided at the end of the side guard ring 7. The first main splicing rib 5 and the second main splicing rib 8 are connected by a connecting bolt 10.

[0039] The main guard plate 3 and the side guard ring 7 in the protective ring are processed and manufactured in the factory and transported to the river surface by means of transportation for assembly. During the assembly process, the main guard plate 3 and the side guard ring 7 are hoisted to the river surface by hoisting tools, so that the pier column 2 is set in the cavity formed by the first connecting groove 6 and the second connecting groove 9, and the first connecting groove 6 and the second connecting groove 9 are fitted with the pier column 2, and finally the first main splicing rib 5 and the second main splicing rib 8 are connected and fixed by the connecting bolts 10.

[0040] like Figure 1 , 2As shown in Figure 4, it can be understood that in some embodiments, first connecting grooves 6 are provided at both ends of the main guard plate 3, two groups of side guard rings 7 are provided, and the two groups of side guard rings 7 are respectively arranged at the two ends of the main guard plate 3, and the second connecting grooves 9 on the two groups of side guard rings 7 are respectively matched with the two groups of first connecting grooves 6 to form a cavity for accommodating the pier column 2.

[0041] The two groups of bridge piers 2 can be respectively inserted into the two groups of cavities so that the device can also protect the foundations of the two groups of bridge piers 2. In addition, it can be understood that in some embodiments, multiple groups of main guard plates 3 can be assembled and side guard rings 7 can be connected at both ends to protect the foundations of multiple groups of bridge piers 2. Through the specific structure of the guard ring, the appropriate number of main guard plates 3 can be selected for assembly according to actual needs, thereby improving the scope of application of the guard ring.

[0042] like Figure 2 As shown, in this embodiment, the main guard plate 3 includes a first guard plate 31 and a second guard plate 32 arranged opposite to each other, and the first guard plate 31 and the second guard plate 32 are connected by a second connecting assembly. The second connecting assembly includes two groups of secondary splicing ribs 4, which are respectively arranged on the first guard plate 31 and the second guard plate 32, and the two groups of secondary splicing ribs 4 are abutted against each other, and the two groups of secondary splicing ribs 4 are connected by connecting bolts 10.

[0043] The main guard plate 3 can be configured as a detachable first guard plate 31 and a second guard plate 32, so that the first guard plate 31 and the second guard plate 32 can be placed into the space between the two groups of pier columns 2 from both sides of the pier column 2, and then the positions of the first guard plate 31 and the second guard plate 32 can be fixed by connecting bolts 10 to avoid interference of the two groups of pier columns 2 in the installation of the main guard plate 3, further improving the convenience of the installation of the protective ring and reducing the limitations of the installation of the protective ring.

[0044] like Figure 1-4 As shown, the present invention also provides a construction method for a self-sinking integrally assembled bridge foundation scour protection ring, using the above-mentioned self-sinking integrally assembled bridge foundation scour protection ring, comprising the following steps:

[0045] The first guard plate 31, the second guard plate 32 and the side guard ring 7 are prefabricated in the factory, and then the prefabricated first guard plate 31, the second guard plate 32 and the side guard ring 7 are transported to the bridge site by car, and then the first guard plate 31, the second guard plate 32 and the side guard ring 7 are transported to the water surface where the bridge is located by ship, and finally the first guard plate 31, the second guard plate 32 and the side guard ring 7 are assembled.

[0046] The specific steps of assembling the first guard plate 31, the second guard plate 32 and the side guard ring 7 are as follows: the first guard plate 31, the second guard plate 32 and the two groups of side guard rings 7 are hoisted to the surrounding side of the pier column 2 by the lifting equipment on the ship, and then the two groups of secondary splicing ribs 4 are fixedly connected by the connecting bolts 10, so that the first guard plate 31 and the second guard plate 32 are located at the two groups of pier columns 2 to form the main guard plate 3, at this time, the first connecting grooves 6 at both ends of the main guard plate 3 are respectively fitted with the two groups of pier columns 2, and finally the first main splicing rib 5 and the second main splicing rib 8 are fixedly connected by the connecting bolts 10 to complete the installation of the side guard ring 7, so that the pier column 2 is located in the cavity formed by the first connecting groove 6 and the second connecting groove 9.

[0047] Specific usage and beneficial effects of the present invention:

[0048] The main guard plate 3 and the side guard ring 7 in the protective ring are processed and assembled in the factory. After the main guard plate 3 and the side guard ring 7 are transported to the bridge site by car, they still need to be transported to the water surface where the bridge is located by ship. The main guard plate 3 and the side guard ring 7 are hoisted to the bridge pier 2 by a small hoist on the ship, and the first connecting groove 6 and the second connecting groove 9 are made to fit with the outer surface of the bridge pier 2. Finally, the main guard plate 3 and the side guard ring 7 are fixed by the first connecting assembly, and the installation of the protective ring can be quickly completed. After installation, the main guard plate 3 and the side guard ring 7 form a whole and sink into the water until they contact the riverbed surface 1, which can effectively protect the riverbed of the bridge foundation. After installing the guard ring, the maximum scour pit depth can be reduced by more than 40%, and the vertical near-bottom flow velocity of the water-facing surface of the pier column 2 can be reduced by more than 50%. It adopts an assembled installation. On the one hand, its installation position on the riverbed will not affect navigation. On the other hand, it does not require drilling or grooving in the water and fixing the guard ring. The installation process will not be affected by the water flow, which effectively reduces the difficulty of installation and improves the installation efficiency of the guard ring.

[0049] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments. On the basis of the present invention, some modifications or improvements can be made thereto, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A self-sinking integrally assembled bridge foundation scour protection ring, used for installation on a bridge pier column (2) on a riverbed surface (1), characterized in that: Included are: A main guard plate (3) having a first connecting groove (6) formed at an end thereof; The side guard ring (7) is provided with a second connection groove (9), the first connection groove (6) and the second connection groove (9) cooperate to form a cavity for accommodating the bridge pier column (2), and the shape of the cavity is adapted to the cross section of the bridge pier column (2); and A first connection component is arranged on the main guard plate (3) and connected to the side guard ring (7) so as to detachably connect the main guard plate (3) and the side guard ring (7).

2. The self-sinking integrally assembled bridge foundation scour protection ring according to claim 1 is characterized in that: The first connecting component includes: A first main splicing rib (5) is arranged at the end of the main guard plate (3); A second main splicing rib (8) is arranged at the end of the side guard ring (7); and A connecting bolt (10) is connected to the first main splicing rib (5) and the second main splicing rib (8).

3. The self-sinking integrally assembled bridge foundation scour protection ring according to claim 1 is characterized by: Both ends of the main guard plate (3) are provided with first connection grooves (6), and two groups of side guard rings (7) are provided. The two groups of side guard rings (7) are respectively provided at the two ends of the main guard plate (3), and the second connection grooves (9) on the two groups of side guard rings (7) respectively cooperate with the two groups of the first connection grooves (6) to form a cavity for accommodating the bridge pier column (2).

4. The self-sinking integrally assembled bridge foundation scour protection ring according to claim 1 is characterized by: The main guard plate (3) comprises a first guard plate (31) and a second guard plate (32) which are arranged opposite to each other, and the first guard plate (31) and the second guard plate (32) are connected via a second connecting component.

5. The self-sinking integrally assembled bridge foundation scour protection ring according to claim 4 is characterized by: The second connection assembly comprises two groups of auxiliary splicing ribs (4), the two groups of auxiliary splicing ribs (4) are respectively arranged on the first guard plate (31) and the second guard plate (32), and the two groups of auxiliary splicing ribs (4) are abutted against each other, and the two groups of auxiliary splicing ribs (4) are connected by connecting bolts (10).

6. A construction method for a self-sinking integrally assembled bridge foundation scour protection ring, using a self-sinking integrally assembled bridge foundation scour protection ring as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: Prefabricate the first guard plate (31), the second guard plate (32) and the side guard ring (7) in a factory; The prefabricated first guard plate (31), the second guard plate (32) and the side guard ring (7) are transported to the bridge site by car; Using a ship to transport the first guard plate (31), the second guard plate (32) and the side guard ring (7) to the water surface where the bridge is located; and The first guard plate (31), the second guard plate (32) and the side guard ring (7) are assembled.

7. The construction method of a self-sinking integrally assembled bridge foundation scour protection ring according to claim 6 is characterized in that: The specific steps of assembling the first guard plate (31), the second guard plate (32) and the side guard ring (7) are as follows: Using a hoist on board, the first guard plate (31), the second guard plate (32) and two sets of side guard rings (7) are hoisted to the side of the pier column (2); The two groups of secondary splicing ribs (4) are fixedly connected using connecting bolts (10) so that the first guard plate (31) and the second guard plate (32) are located on the two groups of bridge pier columns (2) and spliced ​​to form a main guard plate (3), and at this time, the first connecting grooves (6) at both ends of the main guard plate (3) are respectively fitted with the two groups of bridge pier columns (2); and The first main splicing rib (5) and the second main splicing rib (8) are fixedly connected using connecting bolts (10) to complete the installation of the side retaining ring (7), so that the pier column (2) is located in the cavity formed by the first connecting groove (6) and the second connecting groove (9).

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