Offshore bridge pier and bank slope stability grouting reinforcement device

Abstract

The application discloses a near-shore pier and bank slope stability grouting reinforcing device, which comprises a bank slope structure and a reinforcing structure. Energy dissipation columns are arranged at intervals on one side of the bank slope structure, and disintegration materials are filled between two adjacent energy dissipation columns. The reinforcing structure comprises a sleeve ring, a grouting pipe arranged on one side of the sleeve ring, a support rod arranged outside the sleeve ring, and an extension rod arranged at the end of the support rod. The extension rod can enter between two energy dissipation columns. The application forms a mark by scouring a square, sets a reinforcing structure between a damaged pier and a bank slope, grouts and reinforces the formed damage on one hand, and avoids further deterioration on the other hand. On the other hand, the position of the bank slope which is easily scoured under the influence of the pier is obtained.

Description

Technical Field

[0001] The invention relates to the technical field of bridge foundation scour protection, in particular to a grouting reinforcement device for near-coast bridge piers and slope bank stability. Background Art

[0002] Loads on bridge structures, as well as those generated by water flow, waves, and wind, are typically transmitted to the underlying foundation via the piers. The foundation's bearing capacity is directly related to the length of the interaction zone with the surrounding soil. Bridge foundations often experience scour due to water erosion. This scour can cause loss of soil surrounding the foundation, reducing its bearing capacity and leading to deformation or even damage.

[0003] Due to the influence of geological structure, wind direction, underwater ocean currents and waves, the bottom of the bridge piers and the slopes are scoured in uncertain directions. After the inevitable scouring occurs, grouting is generally used to reinforce the foundation. The grouting reinforcement technology in the existing technology, such as the all-round grouting device for treating bridge foundation scour disclosed in patent CN202010381643.0 and its use method, can only be used for local reinforcement. The irreversible damage caused to the slopes near the coast affected by the bridge piers and the defect of poor remedial reinforcement effect of irreversible damage cannot be overcome. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a grouting reinforcement device for near-coast bridge piers and slope stability, thereby solving the problems existing in the prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A grouting reinforcement device for the stability of near-coastal bridge piers and slopes includes a slope structure and a reinforcement structure. Energy dissipation columns are arranged at intervals on one side of the slope structure, and disintegrating materials are filled between two adjacent energy dissipation columns. The reinforcement structure includes a collar, a grouting pipe is arranged on one side of the collar, a support rod is arranged on the outside of the collar, and a telescopic rod is arranged at the end of the support rod, and the telescopic rod can enter between the two energy dissipation columns.

[0007] Preferably, the collar is in the form of two half-ring structures, and the two half-rings are fixedly connected by bolts.

[0008] Preferably, a cavity is provided inside the collar, an overflow hole is provided on the side of the grouting pipe, the overflow hole is communicated with the cavity, the support rod is a hollow structure, and the telescopic rod is sleeved on the end of the support rod, a sealing ring is provided inside the telescopic rod, and a discharge hole is provided on the outside of the telescopic rod.

[0009] Preferably, a through groove is provided on the side of the collar, the support rod extends into the cavity through the through groove, and the extending end of the support rod is fixedly connected to two arc-shaped plates, the width of the support rod is smaller than the through groove, and the arc-shaped plates form a seal for the through groove.

[0010] Preferably, the collar, grouting pipe, support rod and telescopic rod are all of an inner steel frame-outer concrete surface layer structure.

[0011] Preferably, the support rod is in a straight structure or an arc structure, and circular columns are arranged at intervals on the upper side of the support rod.

[0012] The advantages of the present invention are as follows: the grouting reinforcement device for the stability of near-shore bridge piers and slopes provided by the present invention pre-fills the space between two adjacent energy dissipation columns with disintegrating materials. As time goes by, the disintegrating materials at specific positions of the slope are scoured and disintegrated, which is convenient for marking the scour square. A reinforcement structure is set between the bridge pier and the slope after the damage. On the one hand, the grouting reinforcement is performed on the formed damage to prevent further deterioration. On the other hand, the position of the slope that is easily scoured under the influence of the bridge pier is obtained.

[0013] The present invention pours concrete into the cavity inside the sleeve from the overflow hole and then fills it along the support rod. When filling the support rod, the telescopic rod is first pushed between the two energy dissipation columns, and the discharge hole is moved to the end of the support rod and connected with the support rod, so that the scouring pit and the slope structure are grouting to form an integral reinforcement structure. This structure improves the overall strength and plays an energy dissipation role in the direction prone to scouring, thereby controlling the hazards of the bridge pier and slope structure and playing a role of reinforcement and energy dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a basic structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the path of waves scouring bridge piers and bank slopes according to the present invention;

[0016] Figure 3 It is a schematic diagram of the connection structure of the collar, the telescopic rod and the support rod in the present invention. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] like Figure 1-3As shown, the grouting reinforcement device for the stability of coastal bridge piers and slopes provided by the present invention includes a slope structure 1 and a reinforcement structure 2. Energy dissipation columns 11 are arranged at intervals on one side of the slope structure 1. Disintegration material is filled between two adjacent energy dissipation columns 11. The disintegration material is compacted clay or low-grade concrete. After the coastal bridge piers and slopes are drained as a whole, the disintegration material is filled between two adjacent energy dissipation columns 11. The performance of the disintegration material is repeatedly tested in the laboratory to obtain disintegration time and performance. The reinforcement structure 2 includes a collar 21. The collar 21 is a two-half ring structure, and the two half rings are fixed by bolts. The connection is convenient for sleeve connection on the bridge pier. A grouting pipe 22 is set on one side of the ring 21, and a support rod 23 is set on the outside of the ring 21. A telescopic rod 24 is set at the end of the support rod 23. The telescopic rod 24 is a sleeve structure and the outer end is closed. When filling concrete in the support rod 23, the telescopic rod 24 is first pushed out and inserted between the two energy dissipation columns 11, and then grouting is performed to form an integral structure with the slope. The telescopic rod 24 can enter between the two energy dissipation columns 11. The support rod 23 is a straight structure or an arc structure. Circular columns 231 are arranged at intervals on the upper side of the support rod 23. The circular columns 231 play the role of energy dissipation in the scouring path.

[0019] The collar 21, the grouting pipe 22, the support rod 23 and the telescopic rod 24 are all of an inner steel frame-outer concrete surface layer structure.

[0020] like Figure 1 and Figure 2 As shown in the figure, for different coastal structures and bridge piers, the waves and ocean currents rushing towards the coast form scour pits 10 on the bridge piers, and the waves affected by the bridge piers scour the bank slope ( Figure 2 As shown by the arrow A in the middle, and the direction is different in different geographical environments), this scouring direction causes damage to both the bridge piers and the bank slope. By pre-filling the disintegrating material between two adjacent energy dissipation columns 11, the disintegrating material at a specific position of the bank slope will disintegrate due to scouring over time, which is convenient for forming a mark for the scouring square. A reinforcement structure 2 is set between the bridge pier and the bank slope after the damage. On the one hand, grouting reinforcement is performed on the formed damage to prevent further deterioration. On the other hand, the position of the bank slope that is easily scoured under the influence of the bridge pier is obtained. Compared with the ordinary bank slope protection structure, the disintegrating material that can be scoured is first added. After the disintegrating material changes, reinforcement can be carried out to avoid irreversible damage to the bank slope structure, and irreversible damage is the defect of poor reinforcement effect.

[0021] When reinforcing the reinforcement structure 2, the two half rings are fixed to form a collar 21 which is put on the bridge pier, and a gap is left between the collar 21 and the bridge pier. After the grouting pipe 22 on the side of the collar 21 is aligned with the scouring pit 10, it is hoisted and lowered so that the grouting pipe 22 is inserted into the scouring pit 10. The upper end of the grouting pipe 22 is a tapered pipe, which is convenient for inserting the connecting pipe to pump in concrete, and filling the scouring pit 10 with concrete. In combination with the collar 21, the support rod 23 and the slope structure 1, the scouring-prone position is reinforced as a whole, which is highly targeted and more stable.

[0022] Furthermore, a cavity 25 is provided inside the collar 21, and an overflow hole 26 is provided on the side of the grouting pipe 22, which is communicated with the cavity 25. The support rod 23 is a hollow structure, and the telescopic rod 24 is sleeved on the end of the support rod 23. A sealing ring 27 is provided inside the telescopic rod 24, and a discharge hole 28 is provided on the outside of the telescopic rod 24. A through groove 211 is provided on the side of the collar 21, and the support rod 23 extends into the cavity 25 through the through groove 211, and the extending end of the support rod 23 is fixedly connected to two arc-shaped plates 212. The width of the support rod 23 is smaller than the through groove 211, and the arc-shaped plates 212 form a seal on the through groove 211. The support rod 23 can rotate relative to the collar 21, so as to facilitate changing the support angle of the support rod 23.

[0023] In a further embodiment, after filling the scour pit 10, concrete is poured into the cavity inside the collar 21 from the overflow hole 26, and then filled along the support rod 23. When the support rod 23 is filled, the telescopic rod 24 is first pushed between the two energy dissipation columns 11, and the discharge hole 28 is moved to the end of the support rod 23 and connected to the support rod 23, so that the scour pit 10 and the slope structure are grouted to form an integral reinforcement structure. This structure improves the overall strength and plays an energy dissipation role in the direction prone to scouring, thereby controlling the hazards of the bridge piers and slope structures and playing a role in reinforcement and energy dissipation.

[0024] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A grouting reinforcement device for piers and bank stability near the coast, comprising a bank slope structure (1) and a reinforcement structure (2), wherein energy dissipation columns (11) are arranged at intervals on one side of the bank slope structure (1), and characterized in that: Disintegrating material is filled between two adjacent energy dissipation columns (11), the reinforcement structure (2) comprises a collar (21), a grouting pipe (22) is provided on one side of the collar (21), a support rod (23) is provided outside the collar (21), a telescopic rod (24) is provided at the end of the support rod (23), and the telescopic rod (24) can enter between the two energy dissipation columns (11); A cavity (25) is provided inside the collar (21), an overflow hole (26) is provided on the side of the grouting pipe (22), the overflow hole (26) is communicated with the cavity (25), the support rod (23) is a hollow structure, and the telescopic rod (24) is sleeved on the end of the support rod (23), a sealing ring (27) is provided inside the telescopic rod (24), and a discharge hole (28) is provided on the outside of the telescopic rod (24); A through groove (211) is provided on the side of the collar (21), and the support rod (23) extends into the cavity (25) through the through groove (211), and the extending end of the support rod (23) is fixedly connected to two arc-shaped plates (212), the width of the support rod (23) is smaller than the through groove (211), and the arc-shaped plates (212) form a seal with the through groove (211).

2. The grouting reinforcement device for coastal bridge piers and slope bank stability according to claim 1 is characterized in that: The collar (21) is in the form of two half-ring structures, and the two half-rings are fixedly connected by bolts.

3. The grouting reinforcement device for coastal bridge piers and slope bank stability according to claim 1 is characterized in that: The sleeve ring (21), grouting pipe (22), support rod (23) and telescopic rod (24) are all of an inner steel frame-outer concrete surface layer structure.

4. The grouting reinforcement device for coastal bridge piers and slope stability according to claim 1 is characterized by: The support rod (23) is in a straight line structure or an arc structure, and circular columns (231) are arranged at intervals on the upper side of the support rod (23).

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