Transverse PBL shear steel bar positioning and fixing device for steel shell-concrete combined bridge tower
By using a rubber ring with notched and operating handle device, the problem of the inability to stabilize positioning of transverse PBL shear steel bars in the bridge tower is solved, the shear bearing capacity and construction efficiency are improved, and the construction process is simplified.
Patent Information
- Application Number
- CN202323670097.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2033-12-29
AI Technical Summary
During the construction of bridge towers, the transverse PBL shear reinforcement bars cannot be stably positioned in the middle of the penetration hole due to the lack of fixing measures, resulting in insufficient shear load-bearing capacity, and it is time-consuming and labor-intensive to weld adjustment after pre-working.
The rubber ring sleeve with notch is set on the transverse shear steel bar, and it is fixed in the perforated hole of the vertical stiffening plate through the operating handle to ensure that the steel bar is consistent with the middle position of the hole and provide temporary positioning and fixing.
It improves the shear load-bearing capacity of shear steel bars, ensures the positioning accuracy and structural stability during concrete pouring, simplifies the construction process, reduces costs, and is easy to install and disassemble and can be reused.
Smart Images
Figure CN222227066U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of bridge tower construction, in particular to a transverse PBL shear reinforcement positioning and fixing device for a steel shell-concrete composite bridge tower. Background Art
[0002] The steel shell-concrete composite bridge tower is composed of an inner and outer steel shell and concrete to form a composite load-bearing member. In order to ensure the coordinated deformation of the steel shell and concrete, steel bar holes must be opened on the longitudinal and transverse ribs of the steel shell, and PBL shear connectors are formed by the steel bars and the longitudinal and transverse rib steel plates of the steel shell, such as Figure 1 As shown, it provides the ability to resist shear deformation between steel and concrete. For bridge tower components, the shear deformation between the steel shell and concrete is mainly vertical shear. Therefore, the setting of transverse PBL shear key steel bars of steel shell-concrete composite bridge tower is particularly important.
[0003] According to the conclusion of the test study, the shear bearing capacity of the PBL shear key steel bar is the largest when it is located in the middle of the circular hole of the perforated plate. However, in actual operation, the vertical steel bars can generally be installed on site, while the transverse steel bars must be installed in advance in the factory before the steel shell and steel plate are assembled, and then assembled and welded on site after forming a reinforced plate with the steel shell and steel plate.
[0004] Since there is a gap reserved for pouring concrete between the pre-installed transverse reinforcement and the reinforcement holes on the vertical perforated plate, if there is no fixing measure, the transverse reinforcement will shake in the reinforcement hole and cling to the wall of the reinforcement hole, and cannot be located in the middle of the reinforcement hole, resulting in the shear bearing capacity of the transverse PBL shear key reinforcement failing to meet expectations. Some manufacturers will spot weld the transverse reinforcement in place during pre-installation. Although shaking is avoided, the transverse reinforcement will still stick to one side and cannot be located in the middle of the reinforcement hole, and the weld needs to be removed before pouring concrete on site, which is time-consuming and labor-intensive. Utility Model Content
[0005] In view of the deficiencies in the above-mentioned prior art, the utility model provides a transverse PBL shear reinforcement positioning and fixing device for a steel shell-concrete composite bridge tower, which can conveniently position the transverse PBL shear reinforcement in the middle of the circular hole of the vertical perforated plate, so that the center of the shear reinforcement coincides with the center of the perforated plate, thereby improving the shear bearing capacity of the shear reinforcement.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A transverse PBL shear reinforcement positioning and fixing device for a steel shell-concrete composite bridge tower is arranged between a reinforcement hole of a stiffening plate and the shear reinforcement, and comprises a rubber ring, wherein the rubber ring is provided with a notch communicating with the inner diameter, and an operating handle is arranged at the notch of the rubber ring.
[0008] As a further implementation, the operating handle is a T-shaped structure.
[0009] As a further implementation, the outer diameter of the rubber ring is the same as the diameter of the reinforcement hole of the stiffening plate, and the inner diameter of the rubber ring is the same as the outer diameter of the shear reinforcement.
[0010] As a further implementation, the rubber ring is sleeved on the shear reinforcement.
[0011] As a further implementation, the thickness of the rubber ring is greater than the thickness of the vertical stiffening plate of the steel shell.
[0012] As a further implementation method, the width of the notch is no greater than 1 / 2 of the outer diameter of the shear steel bar to avoid the rubber ring being easily fallen off due to the width being too large.
[0013] As a further implementation method, the operating handles are arranged on both sides of the notch and fixed on the end surface of the rubber ring to facilitate operation.
[0014] As a further implementation, the operating handle is bonded to the rubber ring.
[0015] As a further implementation, the operating handle is made of rubber or plastic.
[0016] As a further implementation, the operating handle includes a plurality of handles, which are arranged on two end surfaces of the rubber ring.
[0017] By adopting the above technical solution, the beneficial effects of the utility model are as follows:
[0018] 1. The utility model uses a rubber ring with a notch to put it on the transverse shear steel bar and move it into the reinforcement hole of the stiffening plate. Before construction, the transverse PBL shear steel bar can be temporarily fixed at the reinforcement hole of the vertical stiffening plate of the steel shell to avoid the shear steel bar from shaking in the hole, thereby improving the overall stability of the attached stiffening plate; moreover, the outer diameter of the rubber ring is consistent with the diameter of the reinforcement hole, and the inner diameter is consistent with the diameter of the shear steel bar. The shear steel bar can be positioned in the middle of the reinforcement hole at the same time to achieve concentric setting, thereby ensuring the positioning accuracy of the shear steel bar when pouring concrete, and effectively improving the shear bearing capacity of the shear steel bar.
[0019] 2. The utility model positions the shear reinforcement before construction at the center of the reinforcement hole of the stiffening plate. While ensuring the stability of the structure, it also ensures that the concrete aggregate can pass smoothly through any reinforcement hole of the stiffening plate during the concrete pouring process, thereby improving the construction efficiency and construction accuracy.
[0020] 3. The utility model is easy to install and disassemble and can be reused.
[0021] 4. The utility model has a simple structure, convenient material acquisition and low production cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.
[0023] Figure 1 It is a schematic diagram of the structure of the utility model;
[0024] Figure 2 It is a top view of the utility model;
[0025] Figure 3 This is the front view of the utility model;
[0026] Figure 4 This is a schematic diagram of the installation of the utility model.
[0027] In the figure: 1. Rubber ring; 2. Operating handle; 3. Steel shell and steel plate; 4. Vertical stiffening plate of steel shell; 5. Reinforcement holes of stiffening plate; 6. Shear reinforcement. DETAILED DESCRIPTION
[0028] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.
[0029] Embodiment 1
[0030] In a typical embodiment of the present application, a transverse PBL shear reinforcement positioning and fixing device for a steel shell-concrete composite bridge tower is provided, which is used for a PBL shear key structure of a steel shell-concrete composite bridge tower, and plays a temporary positioning and fixing role between the transverse shear reinforcement and the steel shell vertical stiffening plate, so as to improve the shear resistance of the shear reinforcement after the final pouring, such as Figure 1-4 As shown, the positioning and fixing device includes a rubber ring 1, which can be sleeved on the shear reinforcement 6. The rubber ring 1 has a notch connected to the inner diameter, and an operating handle 2 is provided at the notch of the rubber ring 1 to facilitate manual operation and installation.
[0031] like Figure 2As shown, the outer diameter D1 of the rubber ring 1 is the same as the diameter of the reinforcing plate through-hole 5, and the inner diameter D2 of the rubber ring 1 is the same as the outer diameter of the shear steel bar 6. The rubber ring 1 is clamped between the reinforcing plate through-hole 5 and the shear steel bar 6 to position and fix the shear steel bar 6, so that the shear steel bar 6 and the through-hole are concentrically arranged, and the shear steel bar 6 is positioned in the middle of the through-hole, which effectively improves the shear bearing capacity of the shear steel bar 6; at the same time, the shaking of the shear steel bar 6 in the reinforcing plate through-hole 5 is avoided, so as to ensure the stability of the reinforced plate structure.
[0032] The thickness T of the rubber ring 1 is 1 to 2 cm more than the thickness of the steel shell vertical stiffening plate 4, and the thickness T is usually made to be 3 cm, so as to have sufficient thickness to be stuck on the steel shell vertical stiffening plate 4. The gap width B of the rubber ring 1 is not greater than 1 / 2 of the diameter of the shear steel bar 6. Specifically, the diameter of the shear steel bar 6 is generally not less than 16 mm. In this embodiment, the outer diameter of the shear steel bar 6 is 18 mm, and the gap width B is set to 6-9 mm, which not only ensures that the rubber ring 1 can be stably sleeved on the outside of the shear steel bar 6 without falling off, but also provides a certain adjustment range by utilizing the elasticity of the rubber ring 1, so as to facilitate the positioning and fixing device to be sleeved on the shear steel bar 6 and moved to the reinforcement hole 5 of the stiffening plate to temporarily position and fix the shear steel bar 6.
[0033] In order to facilitate the installation and use of the positioning and fixing device, an operating handle 2 is provided on the end surface of the rubber ring 1. The operating handle 2 can be made of soft materials such as plastic or rubber and is fixedly connected to the rubber ring 1 by bonding or other means. Figure 1-3 As shown, the operating handle 2 is a T-block structure, which is convenient for fingers to pass through and hold, and is fixed on the end face of the rubber ring 1. In this embodiment, two operating handles 2 are set, which are respectively fixed at the notches on the front and back sides of the rubber ring 1, and are respectively located on both sides of the notch. The staggered installation will not affect the adjustment range at the notch. At the same time, when the rubber ring 1 is put on the shear steel bar 6, the opening of the rubber ring 1 can be adjusted by grasping the operating handles 2 on both sides, which is convenient to operate and also helps to make the deformation of the rubber ring 1 easier to control. After the rubber ring 1 is put on the shear steel bar 6 from the end, the operating handle 2 can be used to push the rubber ring 1 forward until the rubber ring 1 moves along the shear steel bar 6 and engages in the reinforcing plate through-bar hole 5; similarly, when disassembly is required, the rubber ring 1 can be smoothly pulled out by pulling the operating handle 2, which is convenient to operate and can maintain the positioning stability of the steel mesh. Of course, in other embodiments, two operating handles can be installed on each end surface as needed, as long as they are distributed on each side of the notch and on both end surfaces of the rubber, and the installation position of the operating handle and the distance from the notch can be specifically selected as long as it does not affect use.
[0034] like Figure 4As shown, in the transverse PBL shear key of the bridge tower, a plurality of steel shell vertical stiffening plates 4 are welded to the steel shell steel plate 3, and a plurality of rows of stiffening plate through-rib holes 5 are provided on the steel shell vertical stiffening plates 4 from top to bottom. After the shear reinforcement 6 passes through the stiffening plate through-rib holes 5 in sequence, it is in a state of not being positioned. The positioning and fixing device of this embodiment is placed at both ends where the transverse reinforcement contacts the steel shell vertical stiffening plates 4. The specific process is as follows:
[0035] First, use the operating handles 2 on both sides of the gap to adjust the ring gap, put the rubber ring 1 onto the shear reinforcement 6, and then use the operating handles 2 on one side of the rubber ring 1 to manually move the rubber ring 1 into the stiffening plate reinforcement hole 5 for engagement. The shear reinforcement 6 can be temporarily fixed at the center of the stiffening plate reinforcement hole 5, so that the shear reinforcement coincides with the center of the stiffening plate reinforcement hole, which plays a positioning role and at the same time makes the steel shell bridge tower segment with the shear reinforcement 6 attached stable as a whole. After the steel shell bridge tower segment with shear reinforcement is transported to the construction site, the vertical reinforcement is inserted to connect the vertical reinforcement in the adjacent steel shell bridge tower segments, and the vertical reinforcement is connected with the transverse reinforcement by binding or spot welding to form a stable reinforcement mesh, so that the shear reinforcement 6 is stably positioned at the center of the stiffening plate reinforcement hole 5. At this time, the rubber ring 1 is manually taken out from the stiffening plate reinforcement hole 5 by operating the handle 2, and the center of the shear reinforcement 6 can coincide with the center of the stiffening plate reinforcement hole 5. Then, the bridge tower concrete in the steel shell is poured, which can ensure that the concrete aggregate can freely pass through any stiffening plate reinforcement hole 5, so that the local concrete, the reinforcement and the perforated steel plate are jointly stressed to form a PBL shear connector.
[0036] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A transverse PBL shear reinforcement positioning and fixing device for a steel shell-concrete composite bridge tower, arranged between the reinforcement holes of the stiffening plate and the shear reinforcement, characterized in that: The utility model comprises a rubber ring, wherein the rubber ring is provided with a notch communicating with the inner diameter, and an operating handle is arranged at the notch of the rubber ring.
2. A transverse PBL shear reinforcement positioning and fixing device for a steel shell-concrete composite bridge tower as claimed in claim 1, characterized in that: The outer diameter of the rubber ring is the same as the diameter of the reinforcement hole of the stiffening plate, and the inner diameter of the rubber ring is the same as the outer diameter of the shear reinforcement.
3. A transverse PBL shear reinforcement positioning and fixing device for a steel shell-concrete composite bridge tower as claimed in claim 1, characterized in that: The rubber ring is sleeved on the shear reinforcement bar.
4. A transverse PBL shear reinforcement positioning and fixing device for a steel shell-concrete composite bridge tower as claimed in claim 1, characterized in that: The thickness of the rubber ring is greater than the thickness of the vertical stiffening plate of the steel shell.
5. A device for positioning and fixing transverse PBL shear reinforcement bars of a steel shell-concrete composite bridge tower as claimed in claim 1, characterized in that: The width of the notch is no greater than 1 / 2 of the outer diameter of the shear reinforcement.
6. A device for positioning and fixing transverse PBL shear reinforcement bars of a steel shell-concrete composite bridge tower as claimed in claim 1, characterized in that: The operating handles include a plurality of handles, which are arranged on two end surfaces of the rubber ring.
7. A device for positioning and fixing transverse PBL shear reinforcement bars of a steel shell-concrete composite bridge tower as claimed in claim 6, characterized in that: The operating handles are arranged on both sides of the notch and fixed on the end faces of the rubber ring.
8. A device for positioning and fixing transverse PBL shear reinforcement bars of a steel shell-concrete composite bridge tower as claimed in claim 1, characterized in that: The operating handle is bonded to the rubber ring.
9. A device for positioning and fixing transverse PBL shear reinforcement bars of a steel shell-concrete composite bridge tower as claimed in claim 1, characterized in that: The operating handle is a T-shaped structure.
10. A device for positioning and fixing transverse PBL shear reinforcement bars of a steel shell-concrete composite bridge tower as claimed in claim 1, characterized in that: The operating handle is made of rubber or plastic.