Bridge and auxiliary pier anti-pulling device and structure thereof

Abstract

The utility model discloses a bridge and auxiliary pier tensile -resistant device and structure thereof, solve the only compression resistance and not having the tensile resistance performance between the problem of existing auxiliary pier and bridge. The bridge and auxiliary pier tensile -resistant device, its characterized in that, including beam body mounting piece, pier body mounting piece and buffer element, the pier body mounting piece is by the three -dimensional steel structure component that limit support plate and steel strip board compose, the beam body mounting piece is by the three -dimensional steel structure component that stand, crossbeam and fixed steel plate compose, and the side of crossbeam has the limit protruding of projecting to the outside side, and in the limit protruding on bonding fixed with a rubber pad, the rubber pad and limit support plate carry out the limit cooperation of up and down orientation. Two steel components prevent the support emptying phenomenon of bridge pier under extreme conditions through the mutual limit effect.

Description

Technical Field

[0001] This disclosure belongs to the field of bridge engineering construction technology, specifically relating to a bridge pier pull-out protection device. Background Technology

[0002] Auxiliary piers are typically located next to the main piers of a bridge. Their main function is to "assist" the main piers in bearing certain pressure and tensile forces, providing "additional support points" for the main span of the bridge. They are used to improve the overall stiffness, stability, and load-bearing capacity of the bridge.

[0003] Current auxiliary pier designs and construction only have compressive strength, lacking tensile strength. However, under extreme conditions such as severe overloading, bridge auxiliary piers may experience bearing detachment. Neither GPZ nor BQZ bridge bearings consider the tensile force of anchor bolts. Therefore, improvements to their tensile strength function are necessary. Utility Model Content

[0004] In order to solve the above problems, this disclosure proposes a bridge and auxiliary pier anti-pull-out device and its structure, which solves the problem that the existing auxiliary piers and bridges only have compressive resistance but not tensile resistance.

[0005] According to some embodiments, the present disclosure adopts the following technical solutions: A bridge and auxiliary pier pull-out protection device is characterized by comprising a beam mounting component, a pier mounting component, and a buffer element. The pier mounting component is a three-dimensional steel structure component composed of a limiting support plate and steel strips, with multiple steel strips vertically arranged and welded to the arc-shaped edge of the limiting support plate to form an arc-shaped mounting surface. The beam mounting component is a three-dimensional steel structure component composed of a column, a crossbeam, and a fixing steel plate. The crossbeam and the fixing steel plate are respectively fixed to the lower end and the upper end of the column, and the side of the crossbeam has a limiting protrusion protruding outward, on which a rubber pad is adhered and fixed. The rubber pad and the limiting support plate perform upper and lower limiting cooperation.

[0006] Furthermore, vertical through holes are provided on the overlapping portions of the limiting plate and the limiting protrusion, and limiting bolts are provided at the through holes.

[0007] Furthermore, a bolt hole is provided on the upper and lower parts of the steel strip.

[0008] Furthermore, triangular ribs are fixedly installed on the back of the limiting plate and the steel strip.

[0009] Furthermore, bolt holes are arranged on the fixing steel plate. Furthermore, the buffer element can be one of a rubber pad, a nylon pad, a copper plate, or a lead plate.

[0010] Furthermore, reinforcing ribs are provided between the columns and the beams.

[0011] A bridge and auxiliary pier pull-out resistant structure includes a beam, a pier, and a bearing. The structure is characterized by further including a bridge and auxiliary pier pull-out resistant device. The beam mounting component in this device is fixed to the beam using chemical anchors, and the pier mounting component in this device is fixed to the pier using chemical anchors. After installation, the beam mounting component and the pier mounting component form a locking structure between a limiting plate and a limiting protrusion.

[0012] Furthermore, the support is either a GPZ support or a BQZ support.

[0013] Furthermore, the anti-pull-out devices for the bridge and auxiliary piers are arranged on both sides of the bridge pier, one on each side.

[0014] Compared with the prior art, the beneficial effects of this disclosure are as follows: This disclosure proposes a pier anti-pull-out device, wherein the two steel components prevent the pier from losing its support under extreme conditions through mutual limiting. Using this device, bridges that cannot install tension and compression bearings can be made to have the physical functions of compressive support and tensile resistance relative to the pier, effectively preventing the pier from losing its support under extreme conditions, ensuring bridge traffic safety, and improving the service life of the bridge. Attached Figure Description

[0015] The accompanying drawings, which form part of this disclosure, are used to provide a further understanding of this disclosure. The illustrative embodiments of this disclosure and their descriptions are used to explain this disclosure and do not constitute an undue limitation of this disclosure.

[0016] Figure 1 This is a three-dimensional diagram of the pier-beam pull-out resistance structure; Figure 2 for Figure 1 The main view; Figure 3 for Figure 1 Side view; Figure 4 for Figure 1 Full sectional view; Figure 5 This is a perspective view of the device disclosed in Embodiment 1; Figure 6 This is a front view of the device disclosed in Embodiment 1; Figure 7 This is a side view of the device disclosed in Embodiment 1; Figure 8 This is a bottom view of the device disclosed in Embodiment 1; Figure 9 This is a perspective view (side-top view) of the device disclosed in Embodiment 2. Figure 10 This is a perspective view (side-down view) of the device disclosed in Embodiment 2. Figure 11 This is a side view of the device disclosed in Embodiment 2; The components include: 10 beam installation parts, 11 columns, 12 crossbeams, 13 fixed steel plates, 14 reinforcing ribs, 15 limiting protrusions, 20 pier installation parts, 21 limiting support plates, 22 steel strip plates, 23 triangular ribs, 30 buffer elements, 40 piers, 50 beams, 60 supports, and 70 limiting bolts. Detailed Implementation The present disclosure will be further described below with reference to the accompanying drawings and embodiments.

[0017] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this disclosure. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains.

[0018] Example 1, Reference Figures 5 to 8 This paper demonstrates a bridge and auxiliary pier anti-pull-out device, which includes a beam mounting component 10, a pier mounting component 20, and a buffer element 30. The beam mounting component 10, composed of steel plates, anchor bolts, and nuts, is a rigid assembly. Specifically, the beam mounting component 10 has a three-dimensional structure. The main body of this three-dimensional structure includes two columns 11, a crossbeam 12, two fixing steel plates 13, and multiple reinforcing ribs 14. The two columns 11 are made of channel steel cut to equal lengths, and a fixing steel plate 13 is welded to the top of each column 11. The fixing steel plate 13 has multiple bolt holes arranged in a 2*5 pattern for anchor bolt installation. The crossbeam 12 is made of a thick steel plate with a thickness of not less than 2 cm, perpendicular to the columns 11 and welded to the bottom of the columns 11 to form a crossbeam 12. Multiple reinforcing ribs 14 are arranged between the crossbeam 12 and each column 11 and welded to it, forming a stable structure. (Reference) Figure 4 In this embodiment, the side of the crossbeam 12 has a limiting protrusion 15 protruding outward, and a rubber pad is glued and fixed on the limiting protrusion 15. The rubber pad is used to cooperate with the limiting support plate 21 in the pier mounting component 20 in the upper and lower position. This cooperation can be a contact cooperation or a small gap contact cooperation, so that the rubber pad can play a buffering function, that is, a buffer element 30.

[0019] Furthermore, the buffer element 30 can be a rubber pad, a nylon pad, or a soft metal pad, such as a copper plate or a lead plate. The buffer element 30 plays a buffering role during tensile testing.

[0020] The beam installation component 10 is fastened to the beam 50 by fixing the steel plate 13 and chemical anchors. The specific fixing method is as follows: holes are drilled at corresponding positions in the concrete substrate of the beam 50, the holes are cleaned, adhesive is injected, the beam installation component 10 is placed in position, and chemical anchors are inserted and screwed in. After the anchors are securely anchored, the nuts are tightened to finally fix the steel plate 13. The protruding portion of the chemical anchors must not be less than 5 cm.

[0021] The pier installation component 20 consists of a limiting support plate 21, steel strips 22, triangular ribs 23, chemical anchors, and nuts. The limiting support plate 21 is a thick steel plate with a thickness of not less than 2 cm. One side of the limiting support plate 21 is an arc-shaped edge, the curvature of which is similar to the arc of the pier 40. The steel strips 22 are narrow steel plates, generally about 10 cm in diameter. The steel strips 22 are vertically positioned and welded to the arc-shaped edge of the limiting support plate 21, and after welding, they are approximately perpendicular to the limiting support plate 21. Gaps exist between the multiple steel strips 22, allowing them to form an arc-shaped contact surface at the edge of the limiting support plate 21 for contact with the pier 40. Each of the steel strips 22 has a bolt hole at the top and bottom for installing chemical anchors.

[0022] In this embodiment, the pier installation component 20 is installed at the pier 40 using steel strip plate 22 and chemical anchor bolts.

[0023] Furthermore, a triangular rib 23 is provided between each steel strip 22 and the limiting support plate 21 to form an auxiliary support, thereby giving the steel strip 22 better strength. The other side of the limiting support plate 21 (the side away from the arc edge) partially overlaps with the limiting protrusion 15 to form a vertical locking structure, that is, a vertical pull-out resistant structure.

[0024] This anti-pull-out main device consists of two steel structure components. Specifically, by setting up the beam mounting component 10 and the pier mounting component 20, a locking structure is formed between the limiting support plate 21 and the limiting protrusion 15, thereby achieving the technical effect of anti-pull-out.

[0025] refer to Figures 1 to 4 The device, used in bridge and auxiliary pier engineering, is an anti-pull-out structure comprising a beam 50, a pier 40, a support 60, a beam mounting component 10, and a pier mounting component 20. Specifically, the beam mounting component 10 is fixed to the beam 50 using chemical anchors, and the pier mounting component 20 is fixed to the pier 40 using chemical anchors. After installation, the beam mounting component 10 and the pier mounting component 20 form a locking structure between the limiting plate 21 and the limiting protrusion 15, and work in conjunction with the support 60 located between the beam 50 and the pier 40 to achieve an anti-pull-out effect.

[0026] Furthermore, the aforementioned support 60 can be either a GPZ support or a BQZ support, both of which can meet the needs of this technical implementation.

[0027] The specific implementation method of this pull-out resisting device includes the following steps.

[0028] Step (1): Holes were drilled at the designed locations on the bridge beam 50 and pier 40, and then the holes were cleaned.

[0029] Step (2): First, install the pier installation component 20, then install the beam installation component 10. Connect and fix the steel components to the bridge and pier 40 with anchor bolts. After completion, check whether they are firm and whether they meet the design expectations.

[0030] The two steel components in the anti-pull-out device are fixed to the bridge beam 50 and the pier respectively by fixed anchor bolts to prevent relative movement. The two steel components prevent the pier 40 from losing support 60 in extreme cases by mutually limiting each other.

[0031] Example 2, reference Figure 9 and Figure 11 This embodiment demonstrates an improved structure. The difference between this embodiment and the first embodiment is that a vertical perforation is made in the overlapping part of the limiting plate 21 and the limiting protrusion 15, and a limiting bolt 70 is provided. The limiting bolt 70 is inserted from top to bottom. The presence of the limiting bolt 70 prevents the limiting plate 21 and the limiting protrusion 15 from separating, that is, prevents the two from slipping off.

[0032] The above description is merely a preferred embodiment of this disclosure and is not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A tensile pull-out protection device for bridges and auxiliary piers, characterized in that, The system includes a beam mounting component (10), a pier mounting component (20), and a buffer element (30). The pier mounting component (20) is a three-dimensional steel structure component composed of a limiting support plate (21) and steel strips (22). Multiple steel strips (22) are vertically arranged and welded to the arc-shaped edge of the limiting support plate (21) to form an arc-shaped mounting surface. The beam mounting component (10) is a three-dimensional steel structure component composed of a column (11), a crossbeam (12), and a fixing steel plate (13). The crossbeam (12) and the fixing steel plate (13) are respectively fixed to the lower end and the upper end of the column (11). The side of the crossbeam (12) has a limiting protrusion (15) protruding outward, and a rubber pad is glued and fixed on the limiting protrusion (15). The rubber pad and the limiting support plate (21) perform upper and lower limiting cooperation.

2. The anti-pull-out device for bridges and auxiliary piers according to claim 1, characterized in that, The overlapping portions of the limiting plate (21) and the limiting protrusion (15) are respectively provided with vertical through holes, and a limiting bolt (70) is provided at the through hole.

3. The anti-pull-out device for bridges and auxiliary piers according to claim 1, characterized in that, The steel strip (22) has a bolt hole on the top and bottom.

4. The anti-pull-out device for bridges and auxiliary piers according to claim 1, characterized in that, Triangular ribs (23) are fixedly installed on the back of the limiting plate (21) and the steel strip plate (22).

5. The anti-pull-out device for bridges and auxiliary piers according to claim 1, characterized in that, Bolt holes are arranged on the fixed steel plate (13).

6. The anti-pull-out device for bridges and auxiliary piers according to claim 1, characterized in that, The buffer element (30) can be one of a rubber pad, a nylon pad, a copper plate or a lead plate.

7. The anti-pull-out device for bridges and auxiliary piers according to claim 1, characterized in that, A reinforcing rib (14) is provided between the column (11) and the beam (12).

8. A bridge and auxiliary pier pull-out resistant structure, comprising a beam (50), piers (40), and supports (60), characterized in that, It also includes the anti-pull-out device for bridge and auxiliary piers as described in any one of claims 1 to 7, wherein the beam mounting component (10) in the device is fixed to the beam (50) using chemical anchors, and the pier mounting component (20) in the device is fixed to the pier (40) using chemical anchors, and the installed beam mounting component (10) and pier mounting component (20) form a locking structure between them through the limiting plate (21) and the limiting protrusion (15).

9. The anti-pull-out structure for bridges and auxiliary piers according to claim 8, characterized in that, The support (60) is either a GPZ support or a BQZ support.

10. The anti-pull-out structure for bridges and auxiliary piers according to claim 8, characterized in that, The anti-pull-out devices for the bridge and auxiliary piers are set on both sides of the pier (40).

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