Wet joint splicing structure for widening old bridge
By using reinforced connection components, including hook structures for support plates and columns, in bridge wet joints, the problem of easy cracking in wet joints has been solved, and the connection strength and load-bearing capacity of bridges have been improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-03-24
AI Technical Summary
The existing bridge wet joint connection structure lacks reinforcement, which makes the wet joint prone to cracking, affecting the structural stability and load-bearing capacity.
The reinforced connection components are made of high-strength steel, including support plates, columns, bidirectional screws, and movable blocks. The screws drive the movable blocks and support plates to move upward, and they are hooked onto the columns to form a stable connection structure. The wet joints are then filled with concrete.
It improves the connection strength and load-bearing capacity of wet joints, prevents cracking, and enhances the overall structural stability of the bridge.
Smart Images
Figure CN224031470U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bridge engineering technical field especially relates to a wet joint splicing structure of old bridge widening. BACKGROUND
[0002] Bridge wet joint refers to the joint that prestressed concrete beam body is divided into blocks and is connected into a whole through cast-in-situ concrete. The wet joint plays an important connecting role in the concrete box girder bridge structure, and its connecting mode directly affects the structural stability and bearing capacity of the bridge.
[0003] The existing bridge wet joint connecting structure is generally formed by only using the steel reinforcement cage and the concrete pouring and solidification to form the connection. Since the bridge will bear the load of the heavy load vehicles on the bridge deck after being put into use, and the existing bridge wet joint connecting structure lacks an integrated structure capable of reinforcing the same, the wet joint is prone to concrete cracking, thereby affecting the strength of the wet joint connecting structure. Therefore, the utility model provides a wet joint splicing structure of old bridge widening. SUMMARY
[0004] To solve the problem of the wet joint connecting structure being prone to damage due to the difficulty in reinforcing the same, the utility model provides a wet joint splicing structure of old bridge widening.
[0005] The utility model adopts the following technical scheme: a wet joint splicing structure of old bridge widening, comprising two groups of bridge bodies and a reinforcing connecting assembly, the inside of each of the two groups of bridge bodies is provided with steel reinforcement at equal intervals, and the end of the steel reinforcement extends to the outside of the bridge body, a wet joint is provided between the two groups of bridge bodies, and the inside of the wet joint is filled with concrete.
[0006] The reinforcing connecting assembly comprises two support plates provided at the bottom of the wet joint, a vertical column is fixedly connected to the top of each side of the support plate at equal intervals, two groups of fixing seats are provided on each of the two groups of bridge bodies, a bidirectional screw rod is rotatably connected between the two groups of fixing seats on the same side, a moving block is threadedly connected to the outside of each side of the bidirectional screw rod, and a connecting rod is symmetrically hinged between the moving block and the support plate on the same side through a hinge piece.
[0007] As a further improvement of the above-mentioned scheme, the end of the steel reinforcement is a hook-shaped structure.
[0008] As a further improvement of the above-mentioned scheme, four anchor holes are symmetrically provided in the fixing seat, and the fixing seat and the bridge body are fixedly connected through an anchor rod.
[0009] As a further improvement of the above-mentioned scheme, the length of the support plate is greater than the length of the wet joint.
[0010] As a further improvement of the above-mentioned scheme, two groups of guide rods are symmetrically and fixedly connected between the two groups of fixing seats on the same side, and the guide rods are simultaneously and slidingly connected between the two groups of moving blocks on the same side.
[0011] As a further improvement of the above-mentioned scheme, a hand wheel is fixedly sleeved on the outer side of the middle part of the bidirectional screw.
[0012] As a further improvement of the above-mentioned scheme, the support plate, the stand, the fixing seat, the bidirectional screw, the moving block and the connecting rod are all made of high-strength steel material.
[0013] Compared with the prior art, the utility model has the advantages of:
[0014] 1、The utility model discloses a bidirectional screw is rotated and drives two groups of moving blocks to move towards each other, utilizes the hinged action cooperation between moving block and support plate and connecting rod, makes the support plate be pushed and moves up to support the concrete in wet joint from the bottom of wet joint, thereby improve its bearing capacity, effectively avoid the problem that wet joint connecting structure is easy to damage because of difficult to reinforce.
[0015] 2、The utility model discloses when pushing and moving up the support plate to support the concrete in wet joint, the support plate moves up and can drive the stand to move up together, when the support plate contacts with the bottom of two groups of bridge bodies, the stand just stretches into the inner side of the end of hook-shaped reinforcement to form hooking, thereby improve the connecting effect of bridge wet joint, and the practicality is strong. DRAWINGS
[0016] Fig. 1 It is the three-dimensional structure schematic diagram of the utility model;
[0017] Fig. 2 It is the three-dimensional structure schematic diagram of bridge body of the utility model;
[0018] Fig. 3 It is the three-dimensional structure schematic diagram of reinforcing connection assembly of the utility model.
[0019] Main symbol explanation:
[0020] 1、Bridge body;2、Reinforcement;3、Concrete;4、Anchor rod;5、Hand wheel;101、Support plate;102、Stand;103、Fixing seat;104、Bidirectional screw;105、Moving block;106、Connecting rod;107、Guide rod. Specific implementation
[0021] Below, combining the drawings and specific implementation, the utility model is further described, and it is explained that under the premise of not conflicting, the following described each embodiment or each technical feature can be combined to form new embodiment.
[0022] Embodiment 1:
[0023] Please combine Figs. 1-3 The wet joint splicing structure of the widened old bridge of the embodiment comprises two groups of bridge bodies 1, the inside of each of the two groups of bridge bodies 1 is provided with steel bars 2 at equal intervals, and the ends of the steel bars 2 extend to the outside of the bridge body 1, the ends of the steel bars 2 are hook-shaped structures after being bent, a wet joint is left between the two groups of bridge bodies 1, and the inside of the wet joint is filled with concrete 3.
[0024] The reinforcing connection assembly for improving the connection effect of the wet joint comprises two groups of support plates 101 arranged at the bottom of the wet joint, the top of each of the support plates 101 is fixedly connected with a vertical column 102 at equal intervals and symmetrically on both sides, two groups of fixed seats 103 are arranged on each of the two groups of bridge bodies 1, a bidirectional screw rod 104 is rotatably connected between the two groups of fixed seats 103 on the same side, a moving block 105 is threadedly connected to the outside of each of the two sides of the bidirectional screw rod 104, a connecting rod 106 is symmetrically hinged between the moving block 105 and the support plate 101 on the same side through a hinge piece, four groups of anchor holes are symmetrically formed in the fixed seat 103, the fixed seat 103 and the bridge body 1 are fixedly connected through an anchor rod 4, so as to stably and firmly fix the fixed seat 103 on the bridge body 1, the length of the support plate 101 is greater than the length of the wet joint, two groups of guide rods 107 are symmetrically fixedly connected between the two groups of fixed seats 103 on the same side and are simultaneously slidably connected between the two groups of moving blocks 105 on the same side, so as to guide the horizontal movement of the moving block 105, and the support plate 101, the vertical column 102, the fixed seat 103, the bidirectional screw rod 104, the moving block 105 and the connecting rod 106 are all made of No. 45 high-strength steel, so as to improve the overall strength and tensile resistance of the structure.
[0025] The implementation principle of the wet joint splicing structure of the widened old bridge in the embodiment of the application is as follows: first, the two groups of fixed seats 103 are fixedly connected to the two groups of bridge bodies 1 through the anchor rods 4, then the bidirectional screw rod 104 is rotated, the two groups of moving blocks 105 are moved towards each other by rotating the bidirectional screw rod 104, the hinging action between the moving block 105, the support plate 101 and the connecting rod 106 is utilized to cooperate, so that the support plate 101 can be pushed upwards to block the bottom of the wet joint, then the remaining support plates 101 are installed in sequence through the above operation until the bottom of the wet joint is completely blocked, at the same time, in the process of pushing the support plate 101 upwards to block the bottom of the wet joint, the support plate 101 upwards can also drive the vertical column 102 to move upwards, when the support plate 101 contacts the bottom of the two groups of bridge bodies 1, the vertical column 102 just extends into the inside of the hook-shaped end of the steel bar 2 to form a hooking, so as to improve the connection effect of the bridge wet joint, finally, the concrete 3 is poured into the inside of the wet joint and solidified.
[0026] Embodiment 2:
[0027] The embodiment is further improved on the basis of the embodiment 1, wherein the middle outer side of the bidirectional screw rod 104 is fixedly sleeved with a hand wheel 5, so as to facilitate the rotation of the bidirectional screw rod 104.
[0028] The above-mentioned embodiment is only the preferred embodiment of the present application, and cannot be used to limit the scope of the present application. Any non-essential changes and replacements made by the person skilled in the art on the basis of the present application shall belong to the scope of the present application.
Claims
1. A wet joint splicing structure for widening an old bridge, characterized in that, include: Two sets of bridge bodies (1), both sets of bridge bodies (1) are provided with steel bars (2) at equal intervals inside, and the ends of the steel bars (2) extend to the outside of the bridge body (1). A wet joint is left between the two sets of bridge bodies (1), and the interior of the wet joint is filled with concrete (3). The reinforcement connection assembly includes two sets of support plates (101) set at the bottom of the wet joint. Columns (102) are symmetrically fixed to both sides of the top of the support plates (101) at equal intervals. Two sets of fixing seats (103) are set on both sets of the bridge body (1). A bidirectional screw (104) is rotatably connected between the two sets of fixing seats (103) on the same side. Moving blocks (105) are threaded to the outer sides of both sides of the bidirectional screw (104). A connecting rod (106) is symmetrically hinged between the moving block (105) and the support plate (101) on the same side through a hinge.
2. The wet joint splicing structure for widening an old bridge as described in claim 1, characterized in that, The end of the steel bar (2) is a bent hook-shaped structure.
3. The wet joint splicing structure for widening an old bridge as described in claim 1, characterized in that, The fixed seat (103) is symmetrically provided with four sets of anchor holes, and the fixed seat (103) is fixedly connected to the bridge body (1) by anchor rods (4).
4. The wet joint splicing structure for widening an old bridge as described in claim 1, characterized in that, The length of the support plate (101) is greater than the length of the wet joint.
5. The wet joint splicing structure for widening an old bridge as described in claim 1, characterized in that, Two sets of guide rods (107) are symmetrically fixedly connected between the two sets of fixed seats (103) on the same side, and the guide rods (107) are simultaneously slidably connected to the two sets of moving blocks (105) on the same side.
6. The wet joint splicing structure for widening an old bridge as described in claim 1, characterized in that, A handwheel (5) is fixedly sleeved on the outer side of the middle part of the bidirectional screw (104).
7. The wet joint splicing structure for widening an old bridge as described in claim 1, characterized in that, The support plate (101), column (102), fixed base (103), bidirectional screw (104), moving block (105) and connecting rod (106) are all made of high-strength steel.