Bridge bracket structure

Abstract

The utility model discloses a bridge bracket structure which is provided with a bracket body installed on a pier column. The support sliding plate is arranged on the bracket body; a stainless steel plate is arranged on the lower end face of the main beam; the main beam, the stainless steel plate, the support sliding plate and the corbel body are limited through the limiting pins, constraint between the main beam and the corbel is reduced, and the corbel mainly bears small loads such as the vertical shear force load, the pulling force and the bending moment.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction, in particular to a bridge bracket structure. Background Art

[0002] At present, during the construction of bridge superstructure cast-in-place concrete and prefabricated component installation, steel pipe supports with few supports are often used. They have strong bearing capacity, simple structure, high assembly degree, and safe and controllable. They are usually supported by ground-mounted steel pipe piles. When there are permanent components such as piers and cap beams near the supports, anchor bars and anchor plates are buried in the components, and corbels are set to support the upper loads.

[0003] In the process of implementing the utility model, the inventor found that the prior art has at least the following problems:

[0004] However, the deformation of the floor bracket and the corbel support is not coordinated. The corbel has a large stiffness and a small allowable deformation range. When the upper load is loaded, the deformation of the two supports is not synchronized, resulting in a large bending moment, pressure and torque transmitted from the main beam to the corbel. The force is very complex and general finite element software cannot effectively simulate and calculate it. The corbel is usually simplified as an eccentrically compressed component for calculation, which poses a certain structural safety risk.

[0005] CN211596369U-Bridge high pier cap beam corbel bracket, discloses a bridge high pier cap beam corbel bracket, comprising a pier body and a main beam, the side of the pier body is provided with an embedded steel plate, the side of the embedded steel plate is fixedly connected with a corbel, the top of the corbel is fixedly connected with the main beam, the upper surface of the main beam is provided with a wooden wedge, the upper surface of the wooden wedge is provided with a cross beam, both ends of the cross beam are provided with safety guardrails, the upper surface of the cross beam is provided with a bottom mold tripod, the upper surface of the bottom mold tripod is provided with a bottom mold, and the above-mentioned technical problems cannot be solved. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a bridge corbel structure, which reduces the constraints between the main beam and the corbel, so that the corbel is mainly subjected to vertical shear load, while loads such as tension and bending moment are relatively small.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is: a bridge bracket structure having:

[0008] The corbel body is installed on the pier;

[0009] A support slide plate is arranged on the corbel body;

[0010] The main beam has a stainless steel plate on its lower end surface; the main beam, the stainless steel plate, the support slide plate and the bracket body are limited by limit pins.

[0011] The limit pin is in clearance fit with the main beam, the stainless steel plate, the support slide plate and the corbel body.

[0012] The corbel body is installed on the pier column through an embedded part mechanism.

[0013] The embedded part mechanism comprises anchor bars and anchor plates, wherein the anchor bars are embedded in the pier column, and the anchor plates are embedded in the surface of the pier column. The corbel plates of the corbel body are connected with the anchor plates and the anchor bars through stress bolts.

[0014] The anchor bar comprises an anchor cone, a screw rod and an embedded part. The first end of the screw rod is connected to the embedded part. The second end of the screw rod is provided with an anchor cone. The anchor cone can be threadedly connected to a stressed bolt.

[0015] The stress-bearing bolt is also provided with a gasket.

[0016] One of the above technical solutions has the following advantages or beneficial effects: it can reduce the constraints between the main beam and the corbel, so that the corbel is mainly subjected to vertical shear loads, and the loads such as tension and bending moment are relatively small. This makes the corbel force simple and convenient for force calculation, ensures the safety of the corbel structure during the construction process, and facilitates the construction operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a bridge bracket structure provided in an embodiment of the utility model;

[0018] Figure 2 for Figure 1 Structural diagram of the bridge bracket structure;

[0019] Figure 3 for Figure 1 Structural diagram of the bridge bracket structure;

[0020] Figure 4 for Figure 1 Structural diagram of the bridge bracket structure;

[0021] The markings in the above figures are: 1. Main beam, 2. Stainless steel plate, 3. Support slide plate, 4. Locating pin, 5. Corbel body, 6. Anchor reinforcement, 61. Load-bearing bolt, 62. Gasket, 63. Anchor cone, 64. Screw, 65. Embedded parts, 7. Anchor plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 4 A bridge corbel structure comprises: a corbel body 5, which is installed on a pier column; a support slide plate 3, which is arranged on the corbel body 5; a main beam 1, on whose lower end surface a stainless steel plate 2 is arranged; and the main beam 1, the stainless steel plate 2, the support slide plate 3, and the corbel body 5 are limited by a limit pin 4. A sliding limit system is adopted, which is mainly composed of a support slide plate 3, a stainless steel plate 2, and a limit pin 4. The support slide plate 3 is located on the top surface of the corbel plate, and a stainless steel plate 2 is laid on the top surface of the slide plate. The main beam 1 is installed on the top surface of the stainless steel plate 2. The main beam 1 transfers the upper load to the stainless steel plate 2, the support slide plate 3, and the corbel respectively. Due to the existence of the slide plate, the main beam 1 can only transfer the vertical load to the corbel, and the bending moment and horizontal tension are relatively small. The limit pin 4 connects the main beam 1 and the corbel, and there is a certain movable space around the pin shaft. The limit pin 4 mainly plays the role of positioning and limiting. It can provide positioning for the main beam 1 during the installation process, and limit the excessive displacement of the main beam 1 during the use process, as a safety reserve for structural mutations.

[0024] The limit pin 4 is in clearance with the main beam 1, the stainless steel plate 2, the support slide plate 3, and the bracket body 5. There is a certain amount of activity space around the pin shaft. The limit pin 4 mainly plays the role of positioning and limiting. It can provide positioning for the main beam 1 during the installation process and limit the excessive displacement of the main beam 1 during use, as a safety reserve for structural mutations.

[0025] The corbel body 5 is installed on the pier column through an embedded part mechanism. The embedded part mechanism includes anchor bars 6 and anchor plates 7. The anchor bars 6 are embedded in the pier column, and the anchor plates 7 are embedded in the surface of the pier column. The corbel plate of the corbel body 5 is connected with the anchor plates 7 and the anchor bars 6 through force bolts 61. The corbel embedded part system is composed of anchor bars 6, anchor plates 7, corbel plates, etc. Anchor bars 6 are embedded in components such as pier columns and cap beams. The anchor plates 7 are installed after the template is removed, and the corbel plates are welded to form corbel embedded parts.

[0026] The anchor bar 6 includes an anchor cone 63, a screw rod 64 and an embedded part 65. The first end of the screw rod 64 is connected to the embedded part 65. The second end of the screw rod 64 is provided with an anchor cone 63, and the anchor cone 63 can be threadedly connected with the stress bolt 61. A gasket 62 is also provided on the stress bolt 61. The embedded structure is more stable and reliable.

[0027] The device is used for the corbel support structure, which can reduce the constraint between the corbel and the main beam 1, make the corbel force more specific, make the corbel design calculation more accurate, and make the use process safer and more reliable. In addition, the device is easy to operate and has good feasibility.

[0028] This device was used in the cast-in-place process of the side span concrete beams of the Huaihe River Bridge under construction. Field practice showed that the corbels were safe and stable, the structure was reliable, and the implementation effect was good.

[0029] After the above structure, the constraints between the main beam and the corbel can be reduced, so that the corbel is mainly subjected to vertical shear load, and the loads such as tension and bending moment are relatively small. In this way, the force of the corbel is simple, the force calculation is convenient, and the safety of the corbel structure and the convenience of construction operation are ensured during the construction process.

[0030] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0032] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge bracket structure, characterized in that: have: The corbel body is installed on the pier; A support slide plate is arranged on the corbel body; The main beam has a stainless steel plate on its lower end surface; the main beam, the stainless steel plate, the support slide plate and the bracket body are limited by limit pins.

2. The bridge bracket structure according to claim 1, characterized in that: The limit pin is in clearance fit with the main beam, the stainless steel plate, the support slide plate and the corbel body.

3. The bridge bracket structure according to claim 2, characterized in that: The corbel body is installed on the pier column through an embedded part mechanism.

4. The bridge bracket structure according to claim 3, characterized in that: The embedded part mechanism comprises anchor bars and anchor plates, wherein the anchor bars are embedded in the pier column, and the anchor plates are embedded in the surface of the pier column. The corbel plates of the corbel body are connected with the anchor plates and the anchor bars through stress bolts.

5. The bridge bracket structure according to claim 4, characterized in that: The anchor bar comprises an anchor cone, a screw rod and an embedded part. The first end of the screw rod is connected to the embedded part. The second end of the screw rod is provided with an anchor cone. The anchor cone can be threadedly connected to a stressed bolt.

6. The bridge bracket structure according to claim 5, characterized in that: The stress-bearing bolt is also provided with a gasket.

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