Bridge anti-falling expansion joint device

Abstract

The utility model relates to a bridge anti-falling expansion joint device which comprises an anti-falling beam and trapezoid displacement boxes, the two ends of the anti-falling beam are respectively sleeved with one trapezoid displacement box in a sliding mode, limiting blocks are arranged at the two ends of the anti-falling beam, check blocks are arranged in the trapezoid displacement boxes, and the limiting blocks can abut against the check blocks by moving the trapezoid displacement boxes towards the outer side of the anti-falling beam. The anti-falling expansion joint device for the bridge comprises the anti-falling beam and the trapezoidal displacement box, when the bridge falls off, the anti-falling beam can be connected with the trapezoidal displacement box through the limiting blocks on the two sides, the position of the bridge expansion joint cannot collapse, and the anti-falling effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction, and in particular relates to an expansion joint device for preventing bridges from falling off. Background Art

[0002] In order to meet the requirements of bridge deck deformation, expansion joints are usually set between the two beam ends, between the beam ends and the abutments, or at the hinged positions of the bridge to adjust the displacement and connection between the superstructures caused by vehicle loads and bridge construction materials.

[0003] The prior art all uses a rectangular box buckle without any anti-falling measures, so the bridge is prone to fall off in the event of a natural disaster (flood, earthquake, etc.). Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a bridge expansion joint device that can prevent it from falling off, so as to address the deficiencies in the existing technology and to produce an anti-falling effect so that the expansion joint of the bridge will no longer collapse.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A bridge expansion joint device for preventing the falling of the bridge comprises an anti-falling beam and a trapezoidal displacement box. A trapezoidal displacement box is slidably sleeved on each end of the anti-falling beam. Limiting blocks are provided at both ends of the anti-falling beam. A stop block is provided inside the trapezoidal displacement box. Moving the trapezoidal displacement box toward the outside of the anti-falling beam allows the limiting block to abut against the stop block.

[0007] In order to better realize the present invention, further optimization is made in the above structure. Side steels are provided on both trapezoidal displacement boxes, and a water-stop strip is provided between the two side steels.

[0008] In order to better realize the present invention, further optimization is made in the above structure, and the two ends of the water-stop rubber strip are respectively clamped on the two side steels.

[0009] In order to better realize the present invention, further optimization is made in the above structure, and anchor steel bars are provided on both side steel sections.

[0010] In order to better realize the present invention, further optimization is made in the above structure. Auxiliary steel is provided on the anti-fall beam between the two side steels, and water-stop strips are provided between the auxiliary steel and the two side steels.

[0011] In order to better realize the present invention, further optimization is made in the above structure, and a telescopic chain is provided between the auxiliary steel and the two side steels.

[0012] In order to better realize the present invention, further optimization is made in the above structure, and the telescopic chain is a quadrilateral telescopic chain.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The expansion joint device for preventing the bridge from falling off provided by the utility model comprises an anti-falling beam and a trapezoidal displacement box. When the bridge falls off, the anti-falling beam can maintain a connection with the trapezoidal displacement box through the limit blocks on both sides, so that the expansion joint of the bridge will not collapse, thereby playing a role in preventing the bridge from falling off; secondly, the two trapezoidal displacement boxes are both trapezoidal structures, which can increase the adhesion between the trapezoidal displacement boxes and the concrete, prevent the displacement boxes from being separated from the concrete when the expansion joint of the bridge expands, and improve the stability of the connection between the displacement boxes and the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a top view of Example 1 of the utility model;

[0017] Figure 2 It is a side sectional view of Example 1 of the present utility model;

[0018] Figure 3 It is a top view of Example 2 of the present utility model;

[0019] Figure 4 It is a side sectional view of embodiment 2 of the present utility model.

[0020] In the picture:

[0021] 1-anti-fall beam, 101-limiting block, 2-trapezoidal displacement box, 201-stop block, 3-side steel, 4-waterstop strip, 5-anchor steel bar, 6-auxiliary steel, 7-telescopic chain, 10-T beam abutment, 11-bridge deck pavement, 12-asphalt concrete. DETAILED DESCRIPTION

[0022] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise specified, "plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be construed as limiting the present invention. In addition, the terms "first", "second", "third", etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model depending on the specific circumstances.

[0025] Reference Figures 1-4 The expansion joint device for preventing a bridge from falling off provided by the utility model includes an anti-falling beam 1 and a trapezoidal displacement box 2. A trapezoidal displacement box 2 is slidably sleeved on both ends of the anti-falling beam 1. A limiting block 101 is provided at both ends of the anti-falling beam 1, and a stopper 201 is provided in the trapezoidal displacement box 2. Moving the trapezoidal displacement box 2 toward the outside of the anti-falling beam 1 can make the limiting block 101 abut against the stopper 201.

[0026] Due to the action of the limit blocks 101 and the stop blocks 201 on both sides, when the bridge falls off, the anti-fall beam 1 can maintain a connection with the trapezoidal displacement box 2 through the limit blocks 101 on both sides, so that the expansion joint of the bridge will not collapse.

[0027] like Figure 3 As shown in the top view, the opposite ends of the two trapezoidal displacement boxes 2 are both trapezoidal structures. After the trapezoidal displacement boxes 2 are buried in concrete, the concrete can more firmly wrap the ends of the trapezoidal displacement boxes 2. The conical structure can increase the adhesion between the trapezoidal displacement boxes 2 and the concrete, preventing the trapezoidal displacement boxes 2 from separating from the concrete when the expansion joint of the bridge expands, and improving the stability of the connection between the trapezoidal displacement boxes 2 and the bridge.

[0028] Example 1:

[0029] like Figure 1 and Figure 2As shown, both trapezoidal displacement boxes 2 are provided with side profiles 3, and a waterstop strip 4 is provided between the two side profiles 3. The ends of the waterstop strip 4 are respectively clamped to the two side profiles 3. The waterstop strip 4 is mostly made of rubber material, which has good flexibility and can withstand changes in stretching and contraction, and can effectively prevent rainwater or debris from falling into the expansion joint.

[0030] Anchor steel bars 5 are provided on both side profile steels 3 to enhance the anchor connection strength with the concrete and improve the structural strength of the entire device.

[0031] Example 2:

[0032] like Figure 3 and Figure 4 As shown, compared with Example 1, an auxiliary steel section 6 is provided on the anti-fall beam 1 between the two side steel sections 3, and a water-stop rubber strip 4 is provided between the auxiliary steel section 6 and the two side steel sections 3. The auxiliary steel section 6 is mainly used in occasions where the expansion joint width is large, while only two side steel sections 3 are used only in occasions where the expansion joint width is narrow. The two have different models and are applicable to different occasions. A telescopic chain 7 is provided between the auxiliary steel section 6 and the two side steel sections 3. In this embodiment, the telescopic chain 7 is a quadrilateral telescopic chain. When the quadrilateral telescopic chain is telescopic, the movement of the head and tail connecting rods is always consistent due to the linkage of the connecting rod, so that the distance from the two side steel sections 3 to the middle auxiliary steel section 6 can also be kept consistent with the connecting rod, thereby preventing the occurrence of excessive offset errors on both sides and improving stability.

[0033] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A bridge anti-fall expansion joint device, characterized by: The invention comprises an anti-drop beam (1) and a trapezoidal displacement box (2), wherein the two ends of the anti-drop beam (1) are respectively slidably sleeved with one of the trapezoidal displacement boxes (2), and the two ends of the anti-drop beam (1) are provided with limit blocks (101), and the trapezoidal displacement box (2) is provided with a stop block (201), and the trapezoidal displacement box (2) is moved toward the outside of the anti-drop beam (1) so that the limit block (101) abuts against the stop block (201); Both of the trapezoidal displacement boxes (2) are provided with side profile steels (3); An auxiliary steel section (6) is provided on the anti-fall beam (1) between the two side steel sections (3), and a water-stopping rubber strip (4) is provided between the auxiliary steel section (6) and the two side steel sections (3).

2. The anti-falling expansion joint device for bridges according to claim 1, characterized in that: The two ends of the water-stopping rubber strip (4) are respectively clamped on the two side profile steels (3).

3. The anti-falling expansion joint device for bridges according to claim 2, characterized in that: Anchor steel bars (5) are provided on both side profile steels (3).

4. The anti-falling expansion joint device for bridges according to claim 1, characterized in that: A telescopic chain (7) is provided between the auxiliary steel section (6) and the two side steel sections (3).

5. The anti-falling expansion joint device for bridges according to claim 4, characterized in that: The telescopic chain (7) is a quadrilateral telescopic chain.

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