Bridge pier reinforcing device

Abstract

The utility model discloses a pier reinforcing device, and relates to the field of bridge engineering. Comprising an upper reinforcing structure and a lower reinforcing structure; the upper reinforcing structure comprises a supporting steel structure, filling concrete and a hollow cylindrical reinforcement cage; the supporting steel structure comprises a steel casing; the hollow cylindrical reinforcement cage is inwards connected with a plurality of horizontal limiting insertion rods, and the horizontal limiting insertion rods all point to the circle center of the circular section of the hollow cylindrical reinforcement cage where the horizontal limiting insertion rods are located; the horizontal limiting insertion rod is inserted into a limiting side insertion hole reserved in the outer side of the upper part of the pier; the filling concrete is filled between the steel casing and the outer side of the upper portion of the pier and wraps the hollow cylindrical reinforcement cage. According to the utility model, the mode of reinforcing completely by concrete in the traditional reinforcing mode is replaced by the mode of filling the concrete with the steel casing, the advantage of large lateral rigidity of the steel casing is fully utilized, the usage amount of the concrete is greatly reduced, materials are saved, the construction period of concrete pouring is further shortened, and the construction efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of bridge engineering, in particular to a bridge pier reinforcement device. Background Art

[0002] With the rapid development of highway construction, there are more and more bridge projects. Bridges are extremely vulnerable to earthquakes. Piers are the main load-bearing structures of bridges. The damage of piers may cause the collapse of the entire bridge, resulting in huge economic losses and casualties. Many existing bridges were built a long time ago, and the designs at that time often do not meet the requirements of existing earthquake-related specifications. Therefore, it is necessary to reinforce the bridges, especially the piers. The existing reinforcement of piers often adopts the method of pouring a large circle of reinforced concrete around the piers to wrap the original piers, so as to increase the bearing capacity of the piers; this reinforcement method not only wastes materials, but also has low construction efficiency.

[0003] Therefore, it is extremely important to propose a pier reinforcement structure that saves materials and has high construction efficiency. Utility Model Content

[0004] The utility model aims to solve the problem that the existing bridge pier reinforcement method not only wastes materials but also has low construction efficiency.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a bridge pier reinforcement device, the bridge pier is cylindrical, including an upper reinforcement structure and a lower reinforcement structure; the upper part of the upper reinforcement structure abuts against the bottom of the bridge, and the lower part of the lower reinforcement structure abuts against the top of the foundation; the upper reinforcement structure and the lower reinforcement structure have the same structure and are symmetrical about the middle of the bridge pier;

[0006] The upper reinforcement structure includes a supporting steel structure, filled concrete, and a hollow cylindrical steel cage; the supporting steel structure includes a steel casing; the hollow cylindrical steel cage is connected inwardly with a plurality of horizontal limit rods, and the horizontal limit rods all point to the center of the circular cross section of the hollow cylindrical steel cage where they are located; the horizontal limit rods are inserted into the limit side plug holes reserved on the outer side of the upper part of the bridge pier;

[0007] The steel casing is located outside the hollow cylindrical steel cage; the filling concrete is filled between the steel casing and the outer side of the upper part of the pier and the filling concrete wraps the hollow cylindrical steel cage;

[0008] The horizontal limit rod of the lower reinforcement structure is inserted into the limit side plug hole reserved on the outer side of the lower part of the pier.

[0009] Furthermore, it also includes carbon fiber cloth; the carbon fiber cloth is ring-shaped and is located between the hollow cylindrical steel cage and the steel casing; the carbon fiber cloth is wrapped in filled concrete.

[0010] Furthermore, the annular stirrups of the hollow cylindrical steel cage are connected to multiple longitudinal secondary bars, the diameter of the longitudinal secondary bars is smaller than the longitudinal main bars; the longitudinal secondary bars are parallel to the longitudinal main bars of the hollow cylindrical steel cage and the longitudinal secondary bars are located between two adjacent longitudinal main bars; the horizontal limit rod is connected to the longitudinal secondary bars.

[0011] Furthermore, the steel casing includes a plurality of steel arc blocks connected in sequence along the annular direction; a limiting clamping strip is connected to the left side of the steel arc block, and a limiting clamping slot is opened on the right side; the steel arc blocks are connected to adjacent steel arc blocks by clamping the limiting clamping strip into the limiting clamping slot of the adjacent steel arc block.

[0012] Furthermore, the supporting steel structure also includes a flange; an open end of the steel casing is connected to the flange along the circumferential direction of the steel casing, and the steel casing is perpendicular to the plane where the flange is located; the flange is provided with a plurality of through holes along the circumferential direction;

[0013] The supporting steel structure of the upper reinforcement structure is fixed to the bottom of the bridge after being bolted to the bolt holes reserved at the bottom of the bridge by means of positioning bolts passing through the through holes; the supporting steel structure of the lower reinforcement structure is fixed to the top of the foundation after being bolted to the bolt holes reserved at the top of the foundation by means of positioning bolts passing through the through holes.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model includes a symmetrical upper reinforcement structure and a lower reinforcement structure; the upper reinforcement structure includes a supporting steel structure, filled concrete, and a hollow cylindrical steel cage, and the supporting steel structure includes a steel casing; the hollow cylindrical steel cage of the upper reinforcement structure is connected to the outer side of the upper part of the bridge pier, and a steel casing is set on the outer side of the hollow cylindrical steel cage, and the filled concrete is poured between the outer side of the upper part of the bridge pier and the steel casing to reinforce the upper part of the bridge pier; similarly, the lower reinforcement structure is used to reinforce the lower part of the bridge pier. This reinforcement method uses a steel casing plus filled concrete to replace the traditional reinforcement method that relies entirely on concrete for reinforcement, fully utilizing the advantage of the large lateral stiffness of the steel casing, greatly reducing the amount of concrete used, saving materials, further shortening the construction period of concrete pouring, and having high construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the overall schematic diagram of the utility model (I).

[0017] Figure 2 It is the overall schematic diagram of the utility model (II).

[0018] Figure 3 It is an exploded schematic diagram of the utility model.

[0019] Figure 4 Schematic diagram of a hollow cylindrical reinforcement cage.

[0020] Figure 5Schematic diagram of the supporting steel structure.

[0021] The meanings of the numbers in the figure are as follows: 1. Foundation; 2. Pier; 3. Bridge; 4. Supporting steel structure; 41. Steel arc block; 42. Limiting clip; 43. Limiting slot; 44. Flange; 5. Carbon fiber cloth; 6. Hollow cylindrical steel cage; 61. Longitudinal main reinforcement; 62. Circumferential stirrups; 63. Longitudinal secondary reinforcement; 64. Horizontal limiting rod; 7. Filling concrete; 8. Limiting side plug hole; 9. Positioning bolt; 10. Bolt hole. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is clearly and completely described below in conjunction with the drawings and specific implementation methods of the specification. The described embodiment is one embodiment of the utility model, and the utility model may also have other implementation methods.

[0023] Example:

[0024] See also Figure 1~Figure 4 The utility model discloses a bridge pier reinforcement device, the bridge pier is cylindrical, and includes an upper reinforcement structure and a lower reinforcement structure; the upper reinforcement structure abuts against the bottom of the bridge 3, and the lower reinforcement structure abuts against the top of the foundation 1; the upper reinforcement structure and the lower reinforcement structure have the same structure and are symmetrical about the middle of the bridge pier 2;

[0025] The upper reinforcement structure includes a supporting steel structure 4, a filling concrete 7, and a hollow cylindrical steel cage 6; the supporting steel structure 4 includes a steel casing; the hollow cylindrical steel cage 6 is connected inwardly with a plurality of horizontal limit rods 64, and the horizontal limit rods 64 all point to the center of the circular cross section of the hollow cylindrical steel cage 6 where they are located; the horizontal limit rods 64 are inserted into the limit side plug holes 8 reserved on the outer side of the upper part of the pier 2;

[0026] The steel casing is located outside the hollow cylindrical steel cage 6; the filling concrete 7 is filled between the steel casing and the outer side of the upper part of the pier 2, and the filling concrete 7 wraps the hollow cylindrical steel cage 6;

[0027] The horizontal limiting plug rod 64 of the lower reinforcement structure is inserted into the limiting side plug hole 8 reserved on the outer side of the lower part of the pier 2.

[0028] In this embodiment, the hollow cylindrical steel cage 6 of the upper reinforcement structure is fixed to the outer side of the upper part of the pier 2 by inserting the horizontal limit rod 64 into the limit side insertion hole 8 reserved on the outer side of the upper part of the pier 2. During operation, the hollow cylindrical steel cage 6 can be divided into arc-shaped petals, and after the horizontal limit rod 64 is inserted into the limit side insertion hole 8 reserved on the outer side of the upper part of the pier 2, the hollow cylindrical steel cage 6 is welded into a whole. The steel casing can also be welded by two semicircular steel casings.

[0029] The utility model includes a symmetrical upper reinforcement structure and a lower reinforcement structure; the upper reinforcement structure includes a supporting steel structure 4, a filling concrete 7, and a hollow cylindrical steel cage 6, and the supporting steel structure 4 includes a steel casing; the hollow cylindrical steel cage 6 of the upper reinforcement structure is connected to the outer side of the upper part of the pier 2, and a steel casing is set on the outer side of the hollow cylindrical steel cage 6, and the filling concrete 7 is poured between the outer side of the upper part of the pier 2 and the steel casing to reinforce the upper part of the pier 2; similarly, the lower reinforcement structure is used to reinforce the lower part of the pier 2. This reinforcement method uses the form of a steel casing plus filling concrete 7 to replace the mode of completely relying on concrete reinforcement in the traditional reinforcement method, fully utilizing the advantage of the large lateral stiffness of the steel casing, greatly reducing the amount of concrete used, saving materials, further shortening the construction period of concrete pouring, and having high construction efficiency.

[0030] As a preferred embodiment, it further comprises a carbon fiber cloth 5 ; the carbon fiber cloth 5 is ring-shaped and is located between the hollow cylindrical steel cage 6 and the steel casing; the carbon fiber cloth 5 is wrapped in filling concrete 7 .

[0031] In this embodiment, by providing the carbon fiber cloth 5, the crack resistance of the filling concrete 7 is increased, thereby increasing the service life of the upper reinforcement structure and the lower reinforcement structure.

[0032] As a preferred embodiment, the annular stirrups 62 of the hollow cylindrical steel cage 6 are connected to multiple longitudinal secondary reinforcements 63, and the diameter of the longitudinal secondary reinforcements 63 is smaller than the longitudinal main reinforcements 61; the longitudinal secondary reinforcements 63 are parallel to the longitudinal main reinforcements 61 of the hollow cylindrical steel cage 6 and the longitudinal secondary reinforcements 63 are located between two adjacent longitudinal main reinforcements 61; the horizontal limiting rod 64 is connected to the longitudinal secondary reinforcements 63.

[0033] In this embodiment, the strength of the hollow cylindrical steel cage 6 is increased by providing the longitudinal secondary reinforcement 63, and the hollow cylindrical steel cage 6 is more closely combined with the filling concrete 7. In addition, the horizontal limit rod 64 is connected to the longitudinal secondary reinforcement 63 but not to the longitudinal main reinforcement 61, thereby ensuring the strength of the longitudinal main reinforcement 61.

[0034] As a preferred embodiment, see Figure 5 The steel casing includes a plurality of steel arc blocks 41 connected in sequence along the annular direction; a limiting clamping strip 42 is connected to the left side of the steel arc block 41, and a limiting clamping groove 43 is opened on the right side; the steel arc blocks 41 are connected to adjacent steel arc blocks 41 by clamping the limiting clamping strip 42 into the limiting clamping groove 43 of the adjacent steel arc block 41.

[0035] In this embodiment, by providing a plurality of steel arc blocks 41 that are sequentially engaged with each other in the circumferential direction, the assembly of the steel casing is made more convenient, thereby improving the construction efficiency.

[0036] As a preferred embodiment, see Figure 5The supporting steel structure 4 also includes a flange 44; an open end of the steel casing is connected to the flange 44 along the circumferential direction of the steel casing, and the steel casing is perpendicular to the plane where the flange 44 is located; the flange 44 has a plurality of through holes along the circumferential direction;

[0037] The supporting steel structure 4 of the upper reinforcement structure is fixed to the bottom of the bridge 3 after being bolted to the bolt holes 10 reserved at the bottom of the bridge 3 by means of positioning bolts 9 passing through the through holes; the supporting steel structure 4 of the lower reinforcement structure is fixed to the top of the foundation 1 after being bolted to the bolt holes 10 reserved at the top of the foundation 1 by means of positioning bolts 9 passing through the through holes.

[0038] In this embodiment, the supporting steel structure 4 of the upper reinforcement structure is fixed to the bottom of the bridge 3 after being bolted to the bolt holes 10 reserved at the bottom of the bridge 3 by the positioning bolts 9 passing through the through holes; the supporting steel structure 4 of the lower reinforcement structure is fixed to the top of the foundation 1 after being bolted to the bolt holes 10 reserved at the top of the foundation 1 by the positioning bolts 9 passing through the through holes. Fixing the supporting steel structure 4 makes the supporting steel structure 4 more stable during construction and use.

[0039] The terms “connection”, “fixation” and “docking” appearing in the description of the present invention may refer to fixed connection, processing, welding or mechanical connection. The specific meanings of the above terms in the present invention shall be understood according to the specific circumstances.

[0040] In the description of the present invention, the terms "inside", "upper", "lower", "end", "side", "outside", etc., which indicate the orientation or position relationship, are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying a specific orientation that the device or element referred to must have, and therefore cannot be understood as a limitation on the present invention.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A bridge pier reinforcement device, the bridge pier is cylindrical, characterized in that: It comprises an upper reinforcement structure and a lower reinforcement structure; the upper part of the upper reinforcement structure abuts against the bottom of the bridge (3), and the lower part of the lower reinforcement structure abuts against the top of the foundation (1); the upper reinforcement structure and the lower reinforcement structure have the same structure and are symmetrical about the middle of the bridge pier (2); The upper reinforcement structure comprises a supporting steel structure (4), filling concrete (7), and a hollow cylindrical steel cage (6); the supporting steel structure (4) comprises a steel casing; the hollow cylindrical steel cage (6) is connected inwardly with a plurality of horizontal limit rods (64), and the horizontal limit rods (64) all point to the center of the circular cross section of the hollow cylindrical steel cage (6) where they are located; the horizontal limit rods (64) are inserted into the limit side insertion holes (8) reserved on the outer side of the upper part of the bridge pier (2); The steel casing is located outside the hollow cylindrical steel cage (6); the filling concrete (7) is filled between the steel casing and the outer side of the upper part of the pier (2), and the filling concrete (7) wraps the hollow cylindrical steel cage (6); The horizontal limit insertion rod (64) of the lower reinforcement structure is inserted into a limit side insertion hole (8) reserved on the outer side of the lower part of the bridge pier (2).

2. A bridge pier reinforcement device according to claim 1, characterized in that: It also includes a carbon fiber cloth (5); the carbon fiber cloth (5) is ring-shaped and is located between the hollow cylindrical steel cage (6) and the steel casing; the carbon fiber cloth (5) is wrapped in filling concrete (7).

3. A bridge pier reinforcement device according to claim 1, characterized in that: The annular stirrups (62) of the hollow cylindrical steel cage (6) are connected to a plurality of longitudinal secondary bars (63), wherein the diameter of the longitudinal secondary bars (63) is smaller than that of the longitudinal main bars (61); the longitudinal secondary bars (63) are parallel to the longitudinal main bars (61) of the hollow cylindrical steel cage (6), and the longitudinal secondary bars (63) are located between two adjacent longitudinal main bars (61); and the horizontal limit rod (64) is connected to the longitudinal secondary bars (63).

4. A bridge pier reinforcement device according to claim 1, characterized in that: The steel casing comprises a plurality of steel arc blocks (41) connected in sequence along the annular direction; the steel arc blocks (41) are connected to a limit clamping strip (42) on the left side and have a limit clamping groove (43) on the right side; the steel arc blocks (41) are connected to adjacent steel arc blocks (41) by clamping the limit clamping strip (42) into the limit clamping groove (43) of the adjacent steel arc blocks (41).

5. The bridge pier reinforcement device according to claim 1, characterized in that: The supporting steel structure (4) further comprises a flange (44); an open end of the steel casing is connected to the flange (44) along the circumferential direction of the steel casing, and the planes where the steel casing and the flange (44) are located are perpendicular; and the flange (44) is provided with a plurality of through holes along the circumferential direction; The supporting steel structure (4) of the upper reinforcement structure is fixed to the bottom of the bridge (3) after being bolted to the bolt holes (10) reserved at the bottom of the bridge (3) by means of positioning bolts (9) passing through the through holes; the supporting steel structure (4) of the lower reinforcement structure is fixed to the top of the foundation (1) after being bolted to the bolt holes (10) reserved at the top of the foundation (1) by means of positioning bolts (9) passing through the through holes.

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