Prefabricated hollow slab beam reinforcing structure
By designing the reinforced structure at the hinge joints of the prefabricated hollow plate beam, including reinforcement grooves and reinforcement plates, and covering concrete after reinforcement on the reinforcement plate and threaded columns, the problem of decreasing the connection strength of the hollow plate beam is solved, and the passage and structural safety of the bridge are improved.
Patent Information
- Application Number
- CN202421277902.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-06-06
AI Technical Summary
With the increase of road traffic and vehicle load, the connection strength of the hinge joints of concrete hollow slab beam bridges decreases, affecting the bridge traffic and structural safety.
A prefabricated hollow slab beam reinforced structure is designed, including the slab beam main body, reinforcement groove, reinforcement plate and cast-in-place concrete layer. After inserting the reinforcement plate into the reinforcement groove after the hinge joint, and tightening the nuts on the reinforcement plate and threaded column, after strengthening the reinforcement plate, concrete covering the reinforcement plate is added to the reinforcement groove, and the construction of the overall reinforcement structure is completed after it is completely solidified.
The strength at the connection of hollow plate beams is improved, and the impact on bridge passage and structural safety is reduced.
Smart Images
Figure CN222632030U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of prefabricated bridge panels, in particular to a prefabricated hollow slab beam reinforcement structure. Background Art
[0002] Prefabricated hollow slab beam bridges are widely used due to their simple structure, clear force, low cost and convenient construction. They are one of the most commonly used bridge types in my country. Prefabricated hollow slab beams can be connected in a variety of ways, and the specific methods depend on the design requirements, structure type and usage scenarios, including: welding connection, bolt connection, adhesive connection, mortise and tenon connection. The strength design of the connection has always been the research direction of prefabricated hollow slabs. Utility Model Content
[0003] The purpose of the utility model is to provide a prefabricated hollow slab beam reinforcement structure to solve the problem raised in the above background technology that the current highway traffic volume and vehicle load are increasing, and the emergence of large-tonnage transport vehicles has caused some concrete hollow slab beam bridges to gradually develop various diseases. One of the hazards is that the connection strength of the hinged joints between the concrete hollow slab beams will decrease with the travel of large-tonnage transport vehicles, which seriously affects the traffic and structural safety of the bridge. Therefore, a reinforcement structure is needed to improve the connection strength of the hinged joints.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a prefabricated hollow slab beam reinforcement structure, comprising: a slab beam body, which is a prefabricated hollow slab beam, formed by a steel frame and concrete pouring; a reinforcement groove, which is opened on the upper surface of the slab beam body, a plug block is arranged at the bottom of the reinforcement groove, a reserved steel bar is arranged on the upper surface of the plug block, and the reserved steel bar is an integrated structure with the steel frame on the slab beam body, and a threaded column is inlaid at the bottom of the reinforcement groove;
[0005] A reinforcing plate, the main body of which is provided with an insertion hole, the main body of which is provided with a fixing hole, the reinforcing plate is inserted into the reinforcing groove, and the insertion hole and the fixing hole are respectively inserted into the plug block and the threaded column, and the top thread of the threaded column is connected with a nut; a cast-in-place concrete layer, which is a structure cast on-site in the gap between the reinforcing plate and the reinforcing groove.
[0006] By adopting the above technical solution, the reinforcing plate is inserted into the reinforcing groove after the hinge joint, and the insertion hole and the fixing hole can be inserted into the plug block and the threaded column respectively. The reinforcing plate can be reinforced by tightening the nut on the top of the threaded column. After completion, concrete is added to the reinforcing groove to cover the reinforcing plate and then smoothed. After it is completely solidified, the construction of the overall reinforced structure is completed, the ability to bear horizontal stress is enhanced, the strength of the connection between the hollow slab beam and the hollow slab beam is improved, and the impact on the traffic and structural safety of the bridge is reduced.
[0007] Preferably, an anchor pile is provided on the upper surface of the plate beam body, a threaded rod is embedded inside the anchor pile, a rope buckle is threadedly connected to the outer end of the threaded rod, and a steel cable is inserted into the other end of the rope buckle.
[0008] By adopting the above technical solution, steel cables and rope buckles can be tightened and fixed on the threaded rods to connect different plate beam bodies and anchor piles to each other. The steel cables can be connected to each other to further improve the ability to withstand horizontal stress, reduce the stress level at the connection, and thus improve the strength of the hollow plate beam after connection.
[0009] Preferably, two threaded rods are embedded in the main body of the anchor pile, and the end of the steel cable inserted into the rope buckle is thicker and blocked on the inside.
[0010] By adopting the above technical solution, two steel cables can be installed on one side at the same time by embedding the threaded rod with concrete inside the anchor pile, thereby reducing the load-bearing of a single steel cable and extending the service life of the steel cable. At the same time, the inner end of the steel cable inserted into the rope buckle is thicker, so that the steel cable cannot be separated from the rope buckle, so as to ensure that it can be rotated on the steel cable and screwed on the threaded rod.
[0011] Preferably, the reinforcement plate is an integrally formed structure of a steel frame and concrete casting, and the thickness of the reinforcement plate is less than the depth of the reinforcement groove.
[0012] By adopting the above technical solution, by using a steel frame and concrete casting to form an integrated structure, the reinforcement plate can be prefabricated in advance, which is convenient for direct use on site and improves construction efficiency. At the same time, by setting the thickness of the reinforcement plate, concrete can be poured into the reinforcement groove to cover the reinforcement plate, so that it solidifies between the structures to form an integral structure, thereby improving the strength between the structures.
[0013] Preferably, the threaded column is welded in advance to the steel bar skeleton of the plate beam body, and the reinforcement groove has four threads evenly distributed at the four corners of the bottom of the reinforcement groove.
[0014] By adopting the above technical solution, by welding the threaded column to the steel frame and then welding it, the threaded column is inserted into the reinforcement plate and connected with the nut, the strength of the connection structure can be improved, and at the same time, the position distribution of the threaded column is set, and two groups of threaded columns close to each other can be formed at the gaps where the plate and beam bodies are connected to each other. After being connected to the reinforcement plate of the overall structure, the strength of the connection of the plate and beam bodies can be further improved.
[0015] Preferably, the reinforcement groove and the internal structure are provided at both ends of the plate beam body, and the reinforcement groove and the anchor pile positions form a symmetrical structure.
[0016] By adopting the above technical solution and using symmetrical reinforcement grooves and internal structures, it is relatively simple to make molds and cast molds, and the produced plate beam bodies can be easily connected during construction.
[0017] Preferably, the thickness of the insert block is smaller than the depth of the insert hole, and the top of the reserved steel bar is flush with the main body of the plate beam.
[0018] By adopting the above technical solution, by setting the thickness of the plug, the plug hole can be clamped, and the reserved steel bars can be integrated with the cast-in-place concrete layer, thereby improving the connection strength between the cast-in-place concrete layer and the structure in the reinforcement groove, thereby improving the connection strength between the overall reinforcement groove and the reinforcement plate.
[0019] Compared with the prior art, the beneficial effects of the utility model are:
[0020] (1) After the joint is hinged, the reinforcing plate is inserted into the reinforcing groove, so that the insertion hole and the fixing hole are respectively inserted into the plug block and the threaded column. After the nut is tightened on the top of the threaded column, the reinforcing plate can be reinforced. After completion, concrete is added to the reinforcing groove to cover the reinforcing plate and then smoothed. After it is completely solidified, the construction of the overall reinforced structure is completed, the ability to bear horizontal stress is enhanced, the strength of the connection between the hollow slab beam and the hollow slab beam is improved, and the impact on the traffic and structural safety of the bridge is reduced.
[0021] (2) By using steel cables and rope buckles, they can be tightened and fixed on the threaded rods to connect different plate beam bodies and anchor piles. The steel cables can further improve the ability to withstand horizontal stress and reduce the stress at the connection, thereby improving the strength of the hollow plate beam after connection. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the main structure of the device of the utility model;
[0023] Figure 2 It is a schematic diagram of the structure of the reinforcement groove and the reinforcement plate of the utility model;
[0024] Figure 3 This is an expanded view of the reinforcement groove and reinforcement plate structure of the utility model;
[0025] Figure 4 This is a schematic diagram of the main structure of the plate beam of the utility model;
[0026] Figure 5 This is a schematic diagram of the anchor pile structure of the utility model.
[0027] In the figure: 1. Plate beam body; 2. Reinforcement groove; 3. Insert block; 4. Reserved steel bar; 5. Threaded column; 6. Reinforcement plate; 7. Insert hole; 8. Fixing hole; 9. Nut; 10. Cast-in-place concrete layer; 11. Anchor pile; 12. Threaded rod; 13. Rope buckle; 14. Steel cable. DETAILED DESCRIPTION
[0028] 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.
[0029] The following is combined with Figure 1-5 The utility model is described in further detail.
[0030] See also Figures 1 to 4 The utility model provides an embodiment: a prefabricated hollow slab beam reinforcement structure, comprising: a slab beam main body 1, which is a prefabricated hollow slab beam, formed by a steel bar skeleton and concrete pouring, a reinforcement groove 2, which is opened on the upper surface of the slab beam main body 1, and one end of the reinforcement groove 2 is in an open shape, and a plug block 3 is arranged at the bottom of the reinforcement groove 2, and the plug block 3 forms an integrated structure with the slab beam main body 1 through pouring, and a reserved steel bar 4 is arranged on the upper surface of the plug block 3, and the reserved steel bar 4 is reserved when tying the steel bar skeleton, and the reserved steel bar 4 is an integrated structure with the steel bar skeleton on the slab beam main body 1, and the structural design can improve the strength of the part after subsequent concrete pouring and the slab beam main body 1, and a threaded column 5 is inlaid at the bottom of the reinforcement groove 2, and the threaded column 5 is the same as the reserved steel bar 4, and is welded on the steel bar skeleton.
[0031] A reinforcing plate 6 is provided with a socket 7 on its main body, which is reserved during prefabrication and pouring, and is used for plugging and fixing with the plug block 3. A fixing hole 8 is provided on the main body of the reinforcing plate 6, and the fixing hole 8 can be inserted into the threaded column 5 to limit the reinforcing plate 6 in the reinforcing groove 2. The reinforcing plate 6 is inserted into the reinforcing groove 2, and the socket 7 and the fixing hole 8 are respectively inserted into the plug block 3 and the threaded column 5. The top of the threaded column 5 is threadedly connected with a nut 9, which is tightened on the top of the threaded column 5 to reinforce the reinforcing plate 6. A cast-in-place concrete layer 10 is a structure that is cast on-site in the gap between the reinforcing plate 6 after the reinforcing plate 6 is inserted into the reinforcing groove 2. Concrete is added to the reinforcing groove 2 to cover the reinforcing plate 6 and then smoothed. After it is completely solidified, the construction of the overall reinforced structure is completed, the ability to withstand horizontal stress is enhanced, the strength of the connection between the hollow slab beams is improved, and the impact on the traffic and structural safety of the bridge is reduced.
[0032] See also Figure 1 , Figure 2 and Figure 5An anchor pile 11 is arranged on the upper surface of the plate beam body 1, and a threaded rod 12 is embedded inside the anchor pile 11. The outer end of the threaded rod 12 is threadedly connected with a rope buckle 13, and the other end of the rope buckle 13 is plugged with a steel cable 14. The steel cable 14 and the rope buckle 13 can be tightened and fixed on the threaded rod 12, so that different plate beam bodies 1 and anchor piles 11 are interconnected. The mutual connection through the steel cable 14 can further improve the bearing capacity of horizontal stress, reduce the stress degree at the connection, and thus improve the strength of the hollow plate beam after connection. Two threaded rods 12 are embedded in the main body of the anchor pile 11. The threaded rods 12 are embedded in the anchor pile 11 by concrete. Two steel cables 14 can be installed on one side at the same time to reduce the bearing capacity of a single steel cable 14 The steel cable 14 is heavy and the service life of the steel cable 14 is extended. The end of the steel cable 14 inserted into the rope buckle 13 is thicker and blocked on the inside. The inner end of the steel cable 14 inserted into the rope buckle 13 is thicker, so that the steel cable 14 cannot be separated from the rope buckle 13, so as to ensure that it can be rotated on the steel cable 14 and screwed on the threaded rod 12. The reinforcing plate 6 is an integrated structure of a steel frame and concrete casting. The steel frame and concrete casting are integrated to form a reinforcing plate 6 in advance, which is convenient for direct use on site and improves construction efficiency. The thickness of the reinforcing plate 6 is less than the depth of the reinforcing groove 2. The thickness of the reinforcing plate 6 is set, and concrete can be poured into the reinforcing groove 2 to cover the reinforcing plate 6, so that it solidifies between the structures to form an integral structure, thereby improving the strength between the structures.
[0033] See also Figures 1 to 4 The threaded column 5 is welded to the steel skeleton of the plate beam body 1 in advance, and the threaded column 5 is welded to the steel skeleton and then welded. After the threaded column 5 is inserted into the reinforcing plate 6 and connected with the nut 9, the strength of the connection structure can be improved. The reinforcing groove 2 has four evenly distributed at the four corners of the bottom of the reinforcing groove 2. The position distribution of the threaded column 5 is set to form two groups of threaded columns 5 close to each other at the gaps where the plate beam body 1 is connected to each other. After being connected to the reinforcing plate 6 of the overall structure, the strength of the connection of the plate beam body 1 can be further improved. The reinforcing groove 2 and the internal structure are provided at both ends of the plate beam body 1, and the reinforcing groove 2 and the anchor pile 11 are symmetrically located, and a symmetrical reinforcement groove 2 and internal structure are adopted to make it simple to make a mold and a casting mold. The produced slab beam body 1 can be conveniently butt-jointed during construction connection. The thickness of the plug block 3 is less than the depth of the insertion hole 7. The top of the reserved steel bar 4 is flush with the slab beam body 1. By setting the thickness of the plug block 3, the insertion hole 7 can be stuck, and the reserved steel bar 4 can be integrated with the cast-in-place concrete layer 10, thereby improving the structural connection strength between the cast-in-place concrete layer 10 and the reinforcement groove 2, thereby improving the connection strength between the overall reinforcement groove 2 and the reinforcement plate 6.
[0034] Working principle: During construction, first insert the reinforcing plate 6 into the reinforcing groove 2, so that the insertion hole 7 and the fixing hole 8 can be inserted into the plug block 3 and the threaded column 5 respectively, and then use the nut 9 to tighten it on the top of the threaded column 5 to reinforce the reinforcing plate 6. After completion, add concrete to the reinforcing groove 2 to cover the reinforcing plate 6 and smooth it. After it is completely solidified, the construction of the overall reinforced structure is completed.
[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.
Claims
1. A prefabricated hollow slab beam reinforcement structure, characterized in that: include: A slab beam body (1), the slab beam body (1) is a prefabricated hollow slab beam, formed by a steel frame and concrete pouring; A reinforcement groove (2), the reinforcement groove (2) being formed on the upper surface of the plate beam body (1), an insert block (3) being provided at the bottom of the reinforcement groove (2), a reserved steel bar (4) being provided on the upper surface of the insert block (3), and the reserved steel bar (4) being an integral structure with the steel bar skeleton on the plate beam body (1), and a threaded column (5) being inlaid at the bottom of the reinforcement groove (2); A reinforcing plate (6), wherein a main body of the reinforcing plate (6) is provided with an insertion hole (7), and a fixing hole (8) is provided on the main body of the reinforcing plate (6). The reinforcing plate (6) is inserted into the reinforcing groove (2), and the insertion hole (7) and the fixing hole (8) are respectively inserted into the insert block (3) and the threaded column (5), and a nut (9) is threadedly connected to the top of the threaded column (5); The cast-in-place concrete layer (10) is a structure in which a reinforcement plate (6) is inserted into a reinforcement groove (2) and then cast in the gap therebetween.
2. The prefabricated hollow slab beam reinforcement structure according to claim 1, characterized in that: An anchor pile (11) is arranged on the upper surface of the plate beam body (1), a threaded rod (12) is embedded inside the anchor pile (11), a rope buckle (13) is threadedly connected to the outer end of the threaded rod (12), and a steel cable (14) is inserted into the other end of the rope buckle (13).
3. The prefabricated hollow slab beam reinforcement structure according to claim 2, characterized in that: Two threaded rods (12) are embedded in the main body of the anchor pile (11), and one end of the steel cable (14) inserted into the rope buckle (13) is thicker and blocked on the inside.
4. The prefabricated hollow slab beam reinforcement structure according to claim 1, characterized in that: The reinforcing plate (6) is an integrally formed structure of a steel frame and concrete casting, and the thickness of the reinforcing plate (6) is less than the depth of the reinforcing groove (2).
5. The prefabricated hollow slab beam reinforcement structure according to claim 1, characterized in that: The threaded column (5) is welded in advance to the steel reinforcement skeleton of the plate beam body (1), and the reinforcement groove (2) has four threads evenly distributed at the four corners of the bottom of the reinforcement groove (2).
6. The prefabricated hollow slab beam reinforcement structure according to claim 2, characterized in that: The reinforcement groove (2) and the internal structure are provided at both ends of the plate beam body (1), and the reinforcement groove (2) and the anchor pile (11) are positioned in a symmetrical structure.
7. The prefabricated hollow slab beam reinforcement structure according to claim 1, characterized in that: The thickness of the insert block (3) is less than the depth of the insert hole (7), and the top of the reserved steel bar (4) is flush with the plate beam body (1).