Temporary fixed bearing of a cable-stayed bridge

Abstract

The application relates to a temporary consolidation support of a cable-stayed bridge, which comprises a main body, two spaced main steel plates and a concrete pouring body; the concrete pouring body comprises reinforcing members and poured concrete, and the two ends of the reinforcing members are connected with the main steel plates respectively; the edges of the main steel plates extend to the outside of the concrete pouring body to form wing parts, and first through holes are arranged on the wing parts; an auxiliary connecting member comprises an auxiliary steel plate and a pre-buried rod; second through holes are arranged on the auxiliary steel plate, the auxiliary steel plate is connected with the pre-buried rod, and a threaded sleeve is connected to the side of the auxiliary steel plate which faces the pre-buried rod; the two ends of the main body are respectively provided with the auxiliary connecting members; and connecting bolts are screwed into the threaded sleeves after passing through the first through holes and the second through holes. The application makes the dismounting process of the temporary consolidation support simple and convenient, and reduces the manpower, material resources, financial resources and time required for dismounting the temporary consolidation support.

Description

Technical Field

[0001] This application relates to the field of cable-stayed bridge technology, and in particular to a temporary fixed support for cable-stayed bridges. Background Technology

[0002] During the construction of a cable-stayed bridge, temporary fixed supports need to be installed between the main beam and the lower crossbeam to share the load borne by the permanent supports, or the temporary fixed supports can bear the entire load. The temporary fixed supports are removed after the bridge is closed.

[0003] Currently, traditional temporary fixed supports are directly constructed using concrete structures, cast together with the main beams and lower crossbeams. Demolition requires the use of pneumatic drills, ultra-high-pressure water jets, and even explosives to treat the concrete structure and its internal steel reinforcement. This results in lengthy demolition operations, consuming significant manpower, material resources, and financial investment. Furthermore, ultra-high-pressure water jets require large quantities of water and sand, potentially causing environmental pollution, while explosives can damage the building structure.

[0004] Therefore, there is a need for a temporary fixed support that is easier to dismantle. Utility Model Content

[0005] Therefore, it is necessary to provide a temporary fixed support for cable-stayed bridges, and the specific technical solution is as follows.

[0006] A temporary fixed support for a cable-stayed bridge includes:

[0007] The main body includes two spaced main steel plates and a concrete casting body; the concrete casting body includes reinforcing bars and poured concrete, the two ends of the reinforcing bars are respectively connected to the main steel plates, and the poured concrete encloses the reinforcing bars; the edge of the main steel plate extends outward to the outside of the concrete casting body to form a wing, and the wing is provided with a first through hole.

[0008] The auxiliary connector includes an auxiliary steel plate and a pre-embedded rod; the auxiliary steel plate is provided with a second through hole, the auxiliary steel plate is connected to the pre-embedded rod, and a threaded sleeve is connected to the side of the auxiliary steel plate facing the pre-embedded rod, the threaded sleeve and the second through hole are arranged coaxially; the two ends of the main body are respectively provided with auxiliary connectors, and the pre-embedded rod is pre-embedded in the main beam or the lower crossbeam;

[0009] The connecting bolt passes through the first through hole and the second through hole and is then threaded into the threaded sleeve.

[0010] Specifically, the reinforcing steel includes vertical reinforcing bars, ring stirrups, and anchor bars; the two ends of the vertical reinforcing bars are respectively connected to two main steel plates, and multiple vertical reinforcing bars are arranged in a ring array; the ring stirrups are wrapped around the outside of the vertical reinforcing bars; one end of the anchor bar is connected to the vertical reinforcing bars, and the other end extends in a horizontal direction away from the vertical reinforcing bars.

[0011] Specifically, the steel reinforcement also includes diagonal web reinforcement; the two ends of the diagonal web reinforcement are welded to different vertical steel reinforcements respectively, so that the diagonal web reinforcement is arranged at an angle, and the low point of the diagonal web reinforcement is close to the side span of the cable-stayed bridge, and the high point is close to the middle span of the cable-stayed bridge.

[0012] Specifically, the vertical reinforcing bars are integrally formed or welded to the main steel plate.

[0013] Specifically, the end of the connecting bolt is located on the side away from the auxiliary steel plate, so that the shank of the connecting bolt passes through the first through hole and the second through hole in sequence and then connects with the threaded sleeve.

[0014] Specifically, a lubricating medium is applied between the main steel plate and the auxiliary steel plate.

[0015] Specifically, the auxiliary steel plate protrudes to the outside of the main beam or lower crossbeam.

[0016] Specifically, the main steel plate includes a first inclined surface, and the auxiliary steel plate includes a second inclined surface that is in contact with the first inclined surface.

[0017] Specifically, the inclination angle of the first inclined plane is 1° to 3°.

[0018] Specifically, multiple temporary fixed supports are arranged symmetrically along the pad stone between the main beam and the lower cross beam.

[0019] Beneficial effects: The temporary fixed support for a cable-stayed bridge provided by this utility model uses a main body composed of steel plates and reinforced concrete structures to temporarily support the main beam and the lower crossbeam, ensuring that the main body has sufficient compressive and shear resistance. The main body and auxiliary connecting parts are installed as a whole between the main beam and the lower crossbeam. During dismantling, only the connecting bolts between the main steel plate and the auxiliary steel plate need to be removed. Then, the main body can be pushed out from between the two auxiliary steel plates by using a jack or hammering, and the main body can be removed to complete the dismantling of the temporary fixed support. The dismantling process is simple and convenient, reducing the manpower, material resources, financial resources and time required for the dismantling of the temporary fixed support. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 One of the schematic diagrams showing the installation of a temporary fixed support between the main beam and the lower crossbeam;

[0022] Figure 2 Schematic diagram 2 showing the installation of temporary fixed supports between the main beam and the lower crossbeam;

[0023] Figure 3 This is a schematic diagram of the temporary fixed support.

[0024] Figure 4 Exploded view of a temporary consolidation support;

[0025] Figure 5 This is a schematic diagram of a steel reinforcement component.

[0026] Explanation of reference numerals in the attached drawings: 100, lower crossbeam; 200, temporary fixed support; 300, main beam; 400, pad stone;

[0027] 1. Main body; 2. Auxiliary connecting parts; 3. Connecting bolts;

[0028] 11. Main steel plate; 12. Concrete casting; 13. Reinforcing steel; 14. Wing; 15. First through hole; 16. Vertical reinforcing steel; 17. Circular stirrups; 18. Anchor bars; 19. Diagonal web reinforcement;

[0029] 21. Auxiliary steel plate; 22. Embedded rod; 23. Second through hole; 24. Threaded sleeve. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0036] Example

[0037] Reference Figure 1 and Figure 3 As shown, this embodiment discloses a temporary fixed support for a cable-stayed bridge, including a main body 1, auxiliary connecting parts 2, and connecting bolts 3. (Refer to...) Figure 4 and Figure 5As shown, the main body 1 includes two spaced-apart main steel plates 11 and a concrete casting body 12. The concrete casting body 12 includes reinforcing bars 13 and poured concrete. The two ends of the reinforcing bars 13 are respectively connected to the main steel plates 11, and the poured concrete encloses the reinforcing bars 13, so that the main steel plates 11 and the concrete casting body 12 form a steel plate-concrete composite structure, ensuring the compressive and shear resistance of the main body 1. The edge of the main steel plate 11 extends outward to the outside of the concrete casting body 12 to form a wing 14, and the wing 14 is provided with a first through hole.

[0038] Specifically, the auxiliary connector 2 includes an auxiliary steel plate 21 and a pre-embedded rod 22. The auxiliary steel plate 21 has a second through hole 23. The auxiliary steel plate 21 is welded to the pre-embedded rod 22 as a single unit. A threaded sleeve 24 is also welded to the side of the auxiliary steel plate 21 facing the pre-embedded rod 22, so that the threaded sleeve 24 is coaxially arranged with the second through hole 23, facilitating the installation of the connecting bolt 3. Auxiliary connectors 2 are provided at both ends of the main body 1. The pre-embedded rod 22 of one auxiliary connector 2 is embedded in the main beam 300, and the pre-embedded rod 22 of the other auxiliary connector 2 is embedded in the lower crossbeam 100. Specifically, the pre-embedded rod 22 is tied or welded to the reinforcing bars in the main beam 300 or the lower crossbeam 100.

[0039] Specifically, the connecting bolt 3 passes through the first through hole 15 and the second through hole 23 and is threaded into the threaded sleeve 24, so that the main body 1 and the auxiliary connecting part 2 are connected as a whole.

[0040] During the construction of the cable-stayed bridge, when constructing the lower crossbeam 100, the complete temporary fixed support 200 is pre-embedded as a whole into the lower crossbeam 100; when constructing the main beam 300, the pre-embedded rod 22 in the auxiliary connecting piece 2 at the top of the main body 1 is tied or welded to the steel reinforcement structure of the main beam 300, and then the main beam 300 is poured. After the bridge is closed, when removing the temporary fixed support 200, jacks can be used to support the main beam 300 and the lower crossbeam 100 first. After the support is converted, the connecting bolts 3 are removed first, and then the main body 1 is pushed out between the two auxiliary connecting pieces 2 by jacking or hammering, while retaining the auxiliary connecting pieces 2.

[0041] The temporary fixed support for a cable-stayed bridge provided in this embodiment uses a main body 1 composed of steel plates and reinforced concrete structures to temporarily support the main beam 300 and the lower crossbeam 100, ensuring that the main body 1 has sufficient compressive and shear resistance. The main body 1 and the auxiliary connecting parts 2 are installed as a whole between the main beam 300 and the lower crossbeam 100. During dismantling, only the connecting bolts 3 between the main steel plate 11 and the auxiliary steel plate 21 need to be removed. Then, the main body 1 can be pushed out between the two auxiliary steel plates 21 by using a jack or hammering, and the main body 1 can be removed to complete the dismantling of the temporary fixed support 200. The dismantling process is simple and convenient, reducing the manpower, material resources, financial resources and time required for the dismantling of the temporary fixed support 200.

[0042] Specifically, refer to Figure 5 As shown, the reinforcing steel member 13 includes vertical reinforcing bars 16, circular stirrups 17, and anchor bars 18. The two ends of the vertical reinforcing bars 16 are connected to two main steel plates 11, and multiple vertical reinforcing bars 16 are arranged in a circular array. The circular stirrups 17 surround the outside of the vertical reinforcing bars 16. One end of the anchor bar 18 is connected to the vertical reinforcing bars 16, and the other end extends horizontally away from the vertical reinforcing bars 16. The vertical reinforcing bars 16 and circular stirrups 17 are used to ensure the shear resistance of the main body 1, and the anchor bars 18 are used to improve the bond strength between the reinforcing steel member 13 and the poured concrete, thereby improving the bond strength between the main steel plate 11 and the poured concrete.

[0043] Specifically, the steel reinforcement 13 also includes diagonal web reinforcement 19; the two ends of the diagonal web reinforcement 19 are welded to different vertical steel reinforcements 16 respectively, so that the diagonal web reinforcement 19 is arranged at an angle, and the low point of the diagonal web reinforcement 19 is close to the side span of the cable-stayed bridge and the high point is close to the middle span of the cable-stayed bridge, thereby further improving the shear strength of the main body 1.

[0044] Specifically, the vertical reinforcing bar 16 is integrally formed or welded with the main steel plate 11.

[0045] Specifically, the end of the connecting bolt 3 is located on the side away from the auxiliary steel plate 21, so that the shank of the connecting bolt 3 passes through the first through hole 15 and the second through hole 23 in sequence before connecting with the threaded sleeve 24. When removing the connecting bolt 3, it can be unscrewed from the suspended side of the wing plate.

[0046] Specifically, a lubricating medium is applied between the main steel plate 11 and the auxiliary steel plate 21. This lubricating medium can reduce the friction between the main steel plate 11 and the auxiliary steel plate 21, allowing the main body 1 to be pushed out more smoothly.

[0047] Specifically, the auxiliary steel plate 21 protrudes outward from the main beam 300 or the lower crossbeam 100. The main body 1 can be quickly removed simply by pushing it outward from the projection of the auxiliary steel plate 21.

[0048] Specifically, refer to Figure 2 As shown, multiple temporary fixed supports 200 are arranged symmetrically along the pad stone 400 between the main beam 300 and the lower crossbeam 100 to ensure reliable support for the main beam 300.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A temporary fixed support for a cable-stayed bridge, characterized in that, include: The main body includes two spaced main steel plates and a concrete casting body; the concrete casting body includes reinforcing bars and poured concrete, the two ends of the reinforcing bars are respectively connected to the main steel plates, and the poured concrete encloses the reinforcing bars; the edge of the main steel plate extends outward to the outside of the concrete casting body to form a wing, and the wing is provided with a first through hole. The auxiliary connector includes an auxiliary steel plate and a pre-embedded rod; the auxiliary steel plate is provided with a second through hole, the auxiliary steel plate is connected to the pre-embedded rod, and a threaded sleeve is connected to the side of the auxiliary steel plate facing the pre-embedded rod, the threaded sleeve and the second through hole are arranged coaxially; the two ends of the main body are respectively provided with auxiliary connectors, and the pre-embedded rod is pre-embedded in the main beam or the lower crossbeam; The connecting bolt passes through the first through hole and the second through hole and is then threaded into the threaded sleeve.

2. The temporary fixed support for a cable-stayed bridge according to claim 1, characterized in that, The reinforcing steel members include vertical reinforcing bars, ring stirrups, and anchor bars; the two ends of the vertical reinforcing bars are respectively connected to two main steel plates, and multiple vertical reinforcing bars are arranged in a ring array; the ring stirrups are wrapped around the outside of the vertical reinforcing bars; one end of the anchor bar is connected to the vertical reinforcing bars, and the other end extends in a horizontal direction away from the vertical reinforcing bars.

3. A temporary fixed support for a cable-stayed bridge according to claim 2, characterized in that, The steel reinforcement also includes diagonal web reinforcement; the two ends of the diagonal web reinforcement are welded to different vertical steel reinforcements respectively, so that the diagonal web reinforcement is arranged at an angle, and the low point of the diagonal web reinforcement is close to the side span of the cable-stayed bridge, and the high point is close to the middle span of the cable-stayed bridge.

4. A temporary fixed support for a cable-stayed bridge according to claim 2, characterized in that, The vertical reinforcing bars are integrally formed or welded to the main steel plate.

5. A temporary fixed support for a cable-stayed bridge according to claim 1, characterized in that, The end of the connecting bolt is located on the side away from the auxiliary steel plate, so that the bolt body passes through the first through hole and the second through hole in sequence and then connects with the threaded sleeve.

6. A temporary fixed support for a cable-stayed bridge according to claim 1, characterized in that, A lubricating medium is applied between the main steel plate and the auxiliary steel plate.

7. A temporary fixed support for a cable-stayed bridge according to claim 1, characterized in that, The auxiliary steel plate protrudes to the outside of the main beam or lower crossbeam.

8. A temporary fixed support for a cable-stayed bridge according to claim 1, characterized in that, Multiple temporary fixed supports are arranged symmetrically along the pad stone between the main beam and the lower cross beam.

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