New and old bent cap construction connecting device
By using the combined technology of embedded steel bars, anchor screws, reinforcement ribs and foam plates in the construction connection device of new and old bridge cover beams, the problems of connection stability and expansion cracks of new and old cover beams are solved, and the effect of synergistic stress and crack prevention is achieved.
Patent Information
- Application Number
- CN202421781553.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-26
AI Technical Summary
During the width of the new and old bridge cover beams, the traditional connection method leads to poor stability of the lower structure, and cracks occur due to the thermal expansion characteristics of the concrete.
A construction connection device for new and old cover beams is provided, including embedded steel bars, anchor screws, reinforcement bars and foam boards. The new and old cover beams are connected by welding and anchoring, and epoxy phenol, winding glass wire cloth and polyethylene tape are applied at the connection nodes to perform anti-oxidation treatment.
The new and old cover beams are coordinated to be subjected to stress, mutual restraint and mutual influence, to prevent cracking at the splicing, and to ensure sufficient expansion joints between the cover beams through the automatic degradation of the foam board.
Smart Images
Figure CN222908571U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction, in particular to a construction connection device for new and old coping beams. Background Technique
[0002] With the sharp increase in the traffic volume of national and provincial roads, the original road traffic capacity cannot meet the current traffic demand. Therefore, it is imperative to expand and upgrade national and provincial roads. At present, the connection methods of joints during the widening of new and old bridge coping beams mainly include flexible connection (hinge) and rigid connection; when hinged, the connection stiffness between the new and old bridge coping beams is very small, and adverse factors such as concrete material shrinkage creep, foundation settlement difference, and deflection difference generated during later operation at the hinge structure can be released in the form of differential deformation.
[0003] However, during the construction of coping beams, if the traditional method of independent new and old coping beams is adopted, the stability of the lower structure will be poor. If the rigid connection is carried out by planting steel bars and integral pouring, cracks will appear due to the heat expansion characteristics of concrete, resulting in the extrusion of new and old coping beams; therefore, how to reasonably select the connection method not only enables the new and old coping beams to be stressed synergistically, restrict and influence each other, but also prevent cracking at the splicing joint is particularly important.
[0004] Therefore, it is necessary to provide a new construction connection device for new and old coping beams to solve the above technical problems. Content of the Utility Model
[0005] The technical problem solved by the utility model is to provide a construction connection device for new and old coping beams that can enable the new and old coping beams to be stressed synergistically, restrict and influence each other, and prevent cracking at the splicing joint.
[0006] To solve the above technical problems, the construction connection device for new and old coping beams provided by the utility model includes: steel bars, one end of which is embedded inside the new bridge coping beam; anchor bolts, which are welded and fixed to the other end of the steel bars; reinforcing ribs, both ends of which are welded and fixed to the side walls of the anchor bolts and the steel bars; foam boards, which are adhesively fixed to the side walls of one end of the new bridge coping beam and one end of the old bridge coping beam; epoxy phenolic, which is applied to the side walls of the welded and fixed joints of the anchor bolts, the steel bars, and the reinforcing ribs.
[0007] Preferably, the side wall of one end of the old bridge coping beam is drilled at equal intervals, and the depth of the drilled holes is 16 cm. The other end of the anchor bolt is fixedly connected to the old bridge coping beam through the drilled holes. The length of one end of the anchor bolt extending out of the side wall of one end of the old bridge coping beam is 12 cm, and the total length of the anchor bolt is 28 cm.
[0008] Preferably, the length of the steel bar is 102 cm, the model is 20#, and the length of one end of the steel bar extending out of one end of the new bridge capping beam is greater than 12 cm.
[0009] Preferably, the new bridge capping beam and the old bridge capping beam are fixedly connected by welding the anchor bolts 4 and the steel bars, and the top surfaces of the new bridge capping beam and the old bridge capping beam are flush.
[0010] Preferably, the side walls of the steel bar, the anchor bolt and the reinforcing rib are also wrapped with fiberglass cloth, and the fiberglass cloth is wrapped 2 times.
[0011] Preferably, a polyethylene adhesive tape is wound outside the fiberglass cloth, and the winding layer of the polyethylene adhesive tape is 2 times.
[0012] Preferably, the foam board is biodegradable, and the area of the foam board is equal to the area of one end side wall of the new bridge capping beam and the area of one end side wall of the old bridge capping beam.
[0013] Compared with the related technology, the new and old capping beam construction connection device provided by the present invention has the following beneficial effects:
[0014] The present invention provides a new and old capping beam construction connection device. First, the steel bars inside the old bridge capping beam can be detected by an integrated steel bar detector, and the positions of the steel bars inside the old bridge capping beam are located and marked with a stone pen. Then, the positions of the bolts are evenly located and marked with a tape measure. Further, when drilling holes later, the positions of the steel bars inside the old bridge capping beam can be avoided. The foam board is fixedly adhered to one end side wall of the old bridge capping beam. Then, the anchor steel bars are fixedly connected to the old bridge capping beam through the drilled holes, and the steel bars at one end of the new bridge capping beam are welded to them. Then, the reinforcing ribs are welded to the steel bars and the anchor bolts to enhance the connection strength between the anchor bolts and the steel bars, making the connection between the new and old capping beams stable. Then, epoxy phenolic is applied to the welding joints, and the fiberglass cloth and the polyethylene adhesive tape are respectively wound on the surface to perform anti-oxidation treatment on the welding joints. Then, concrete is poured in the middle section to integrate the new and old capping beams into a whole. The foam board will automatically degrade over time, ensuring that there is enough expansion joint between the new and old capping beams. This device has the advantages of enabling the new and old capping beams to be stressed together, restricting each other, influencing each other, and preventing cracking at the splicing place. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic structural diagram of a preferred embodiment of the new and old capping beam construction connection device provided by the present invention;
[0016] Figure 2 isFigure 1 Schematic diagram of the structure of the side view drilling of the old bridge capping beam shown
[0017] Figure 3 is Figure 1 Schematic diagram of the structure of the steel bar welding waterproofing shown
[0018] Figure 4 is Figure 1 Schematic diagram of the enlarged structure of part A shown
[0019] Reference numerals in the figure: 1. New bridge capping beam, 2. Old bridge capping beam, 3. Steel bar, 4. Anchor bolt, 5. Reinforcing rib, 6. Foam board, 7. Drilling hole, 8. Epoxy phenolic, 9. Glass cloth, 10. Polyethylene adhesive tape Specific implementation mode
[0020] The present utility model will be further described below in conjunction with the accompanying drawings and the implementation mode
[0021] Please refer to Figures 1 to 4 , Figure 1 which is a schematic diagram of the structure of a preferred embodiment of the new and old capping beam construction connection device provided by the present utility model Figure 2 is Figure 1 Schematic diagram of the structure of the side view drilling of the old bridge capping beam shown Figure 3 is Figure 1 Schematic diagram of the structure of the steel bar welding waterproofing shown Figure 4 is Figure 1 Schematic diagram of the enlarged structure of part A shown; wherein the new and old capping beam construction connection device includes: a steel bar 3, one end of the steel bar 3 is embedded inside the new bridge capping beam 1; an anchor bolt 4, the anchor bolt 4 is welded and fixed to the other end of the steel bar 3; a reinforcing rib 5, both ends of the reinforcing rib 5 are welded and fixed to the side wall of the anchor bolt 4 and the side wall of the steel bar 3; a foam board 6, the foam board 6 is adhesively fixed to the side wall of one end of the new bridge capping beam 1 and the side wall of one end of the old bridge capping beam 2; an epoxy phenolic 8, the epoxy phenolic 8 is applied to the side wall of the welded and fixed joints of the anchor bolt 4, the steel bar 3 and the reinforcing rib 5
[0022] During the specific implementation process, as Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, equidistant drilling holes 7 are drilled in the side wall of one end of the old bridge capping beam 2, and the depth of the drilling holes 7 is 16 cm, and the other end of the anchor bolt 4 is fixedly connected to the old bridge capping beam 2 through the drilling holes 7, and the length of one end of the anchor bolt 4 extending out of the side wall of one end of the old bridge capping beam 2 is 12 cm, and the total length of the anchor bolt 4 is 28 cm
[0023] It is convenient to enable the anchor bolt 4 to be fixedly connected to the old bridge capping beam 2 through the drill hole 7, so that one end side wall of the old bridge capping beam 2 can use the anchor bolt 4 as the connection fulcrum.
[0024] In the specific implementation process, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, the length of the steel bar 3 is 102 cm, the model is 20#, and the length of one end of the steel bar 3 extending out of one end of the new bridge capping beam 1 is greater than 12 cm; the new bridge capping beam 1 and the old bridge capping beam 2 are fixedly connected by welding the anchor bolt 4 and the steel bar 3, and the top surfaces of the new bridge capping beam 1 and the old bridge capping beam 2 are flush.
[0025] It is convenient to connect and fix the new bridge capping beam 1 and the old bridge capping beam 2 through the welding of the steel bar 3 and the anchor bolt 4.
[0026] In the specific implementation process, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, the side walls of the steel bar 3, the anchor bolt 4 and the reinforcing rib 5 are also wrapped with fiberglass cloth 9, and the fiberglass cloth 9 is wrapped for 2 turns. The outside of the fiberglass cloth 9 is wrapped with polyethylene tape 10, and the winding layer of the polyethylene tape 10 is 2 turns.
[0027] It is convenient to perform waterproof and rust-proof treatment on the welding point between the steel bar 3 and the anchor bolt 4.
[0028] In the specific implementation process, such as Figure 1 and Figure 4 shown, the foam board 6 has degradability, and the area of the foam board 6 is equal to the area of one end side wall of the new bridge capping beam 1 and the area of one end side wall of the old bridge capping beam 2.
[0029] It is convenient to be self-degraded over time subsequently, ensuring that there is enough expansion joint between the new and old capping beams.
[0030] The working principle of the new and old capping beam construction connection device provided by the present utility model is as follows:
[0031] When in use, first use an integrated steel bar 3 detector on the side of the old bridge cover beam 2 to locate the position of the steel bar 3 inside the old bridge cover beam 2, use a stone pencil to mark it, use a tape measure to evenly locate the bolt position, use an electric hammer to avoid the steel bar 3 position to drill the hole 716cm, and after the hole 7 is drilled, use a hair dryer and 10# round steel to remove small gravel and dust in the hole. After emptying, drive one end of the anchor screw 4 into the inner 16cm of the hole 7 and leave 12cm outside, so that the anchor screw 4 is fixedly connected to the old bridge cover beam 2, and then use the side of the old bridge cover beam 2 as the supporting surface, and paste the degradable foam board 6 on its surface to serve as the side form of the new cover beam, and then the steel bar 3 extended from the side wall of one end of the new bridge cover beam 1 is in conflict with one end of the anchor screw 4, so that they are overlapped together, and then the anchor screw 4 and the steel bar 3 are welded and fixed to make the The old bridge cover beam 2 and the new bridge cover beam 1 are connected by welding the steel bar 3 and the anchor screw 4, and then the reinforcing ribs 5 are respectively welded and fixed to the anchor screw 4 and the steel bar 3 at the welding connection between the steel bar 3 and the anchor screw 4, so that the reinforcing ribs 5 increase the connection strength between the anchor screw 4 and the steel bar 3, so that the connection between the old bridge cover beam 2 and the new bridge cover beam 1 is more stable, and then the epoxy phenolic 8 is applied to the periphery of the connection node, and then the glass fiber cloth 9 is wrapped with 2 circles, and finally wrapped with 102 layers of polyethylene tape to prevent the node from oxidation, and then the steel bar 3 skeleton is installed, and then the template and the steel bar 3 skeleton and the mold are used to pour concrete inside, so that the old bridge cover beam 2 and the new bridge cover beam 1 are completely connected and fixed together. This device has the advantages of enabling the new and old cover beams to be coordinated in force, restrict and influence each other and prevent cracking at the joints.
[0032] Compared with the related art, the new and old cap beam construction connection device provided by the utility model has the following beneficial effects:
[0033] The utility model provides a construction connection device for old and new capping beams. Firstly, the reinforcing bars 3 inside the old bridge capping beam 2 can be detected by an integrated reinforcing bar 3 detector, and the positions of the reinforcing bars 3 inside the old bridge capping beam 2 are located and marked with a stone pen. Then, the positions of the bolts are evenly located and marked with a tape measure, so that the positions of the reinforcing bars 3 inside the old bridge capping beam 2 can be avoided during the subsequent drilling. The foam board 6 is pasted and fixed on the side wall at one end of the old bridge capping beam 2. Then, the anchoring reinforcing bars 3 are fixedly connected to the old bridge capping beam 2 through the drilled holes. The reinforcing bars 3 at one end of the new bridge capping beam 1 are welded to it. Then, the reinforcing ribs 5 are welded to the reinforcing bars 3 and the anchoring screw rods 4 to strengthen the connection strength between the anchoring screw rods 4 and the reinforcing bars 3, so that the connection between the old and new capping beams is stable. Then, epoxy phenolic 8 is applied to the welded joints, and the fiberglass cloth 9 and the polyethylene adhesive tape 10 are respectively wound on the surface to prevent oxidation of the welded joints. Then, concrete is poured in the middle section to integrate the old and new capping beams into a whole. The foam board 6 will automatically degrade over time to ensure that there is enough expansion joint between the old and new capping beams. This device has the advantages of enabling the old and new capping beams to be stressed synergistically, restricting and influencing each other, and preventing cracking at the splicing joint.
[0034] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present utility model.
Claims
1. A new and old cap beam construction connection device, characterized in that: include; A steel bar (3), one end of which is pre-buried inside the new bridge cap beam (1); An anchoring screw (4), the anchoring screw (4) being welded and fixed to the other end of the steel bar (3); A reinforcing rib (5), wherein both ends of the reinforcing rib (5) are welded and fixed to the side wall of the anchoring screw (4) and the side wall of the steel bar (3); A foam board (6), the foam board (6) being glued and fixed to the side wall at one end of the new bridge cap beam (1) and the side wall at one end of the old bridge cap beam (2); Epoxy phenolic resin (8), the epoxy phenolic resin (8) is applied to the side wall of the welding fixing node of the anchor screw (4), the steel bar (3) and the reinforcing rib (5).
2. The new and old cap beam construction connection device according to claim 1 is characterized in that: The side wall of one end of the old bridge cover beam (2) is drilled with holes (7) at equal intervals, and the depth of the holes (7) is 16 cm, and the other end of the anchoring screw (4) is fixedly connected to the old bridge cover beam (2) through the holes (7), and the length of one end of the anchoring screw (4) extending out of the side wall of one end of the old bridge cover beam (2) is 12 cm, and the total length of the anchoring screw (4) is 28 cm.
3. The new and old cap beam construction connection device according to claim 1 is characterized in that: The length of the steel bar (3) is 102 cm, the model is 20#, and the length of one end of the steel bar (3) extending out of one end of the new bridge cover beam (1) is greater than 12 cm.
4. The new and old cap beam construction connection device according to claim 1 is characterized in that: The new bridge cap beam (1) and the old bridge cap beam (2) are fixedly connected by welding the anchor screws (4) and the steel bars (3), and the top surfaces of the new bridge cap beam (1) and the old bridge cap beam (2) are flush.
5. The new and old cap beam construction connection device according to claim 1 is characterized in that: The side walls of the steel bars (3), the anchoring screws (4) and the reinforcing ribs (5) are also wrapped with glass cloth (9), and the glass cloth (9) is wrapped twice.
6. The new and old cap beam construction connection device according to claim 5 is characterized in that: The glass fiber cloth (9) is wrapped with a polyethylene tape (10) on the outside, and the polyethylene tape (10) is wrapped in two layers.
7. The new and old cap beam construction connection device according to claim 1 is characterized in that: The foam board (6) is degradable, and the area of the foam board (6) is equal to the area of the side wall at one end of the new bridge cap beam (1) and the area of the side wall at one end of the old bridge cap beam (2).