Temporary reinforcing device suitable for bridge construction

Abstract

The utility model relates to the technical field of bridge structure engineering, in particular to a temporary reinforcing device suitable for bridge construction, which comprises a first inhaul cable, a second inhaul cable and a third inhaul cable, the tensioning device is detachably arranged at the free end of the cantilever section, and the tensioning device is used for tensioning the first inhaul cable; and the anchor cup is connected to the tensioning device, and the anchor cup is used for anchoring the first inhaul cable. A temporary reinforcing device suitable for bridge construction overcomes the defects that in the prior art, a temporary support is arranged below an unconstructed cantilever section, but a large amount of time and manpower resources are needed for erecting the temporary support, and the temporary support needs to be adjusted according to the construction progress; and secondly, a sling or an inclined strut is arranged on a cantilever section, but an additional load is applied to the cantilever section, so that the overall structure is influenced.

Description

Technical Field

[0001] This utility model relates to the technical field of bridge structural engineering, and in particular to a temporary reinforcement device suitable for bridge construction. Background Technology

[0002] In traditional arch bridge construction, especially when large cantilever arch ribs are involved, the threat posed by typhoons has always been a serious challenge. During the construction phase, the bridge structure is exposed to the natural environment, and severe weather conditions can lead to structural instability and even serious accidents. Current temporary support and reinforcement methods have a series of problems that hinder the smooth progress of construction.

[0003] To ensure structural stability during construction, engineers typically employ a range of temporary reinforcement methods. Traditionally, engineers tend to construct complex support structures on-site to support the large cantilevered arch ribs of arch bridges. However, these support structures usually consist of large temporary supports that require periodic adjustments during construction to ensure structural balance and stability. Furthermore, the erection and adjustment of these large support structures demands significant time and manpower, potentially leading to delays in construction progress.

[0004] Some construction teams use additional support systems, such as slings and braces, to enhance the stability of arch bridges. These support systems are designed to provide additional support and restraint during construction to reduce the load on the cantilever sections. However, these methods often impose additional loads on the structure, which may have adverse effects on the overall design. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing methods for temporarily reinforcing cantilever sections that are not yet fully constructed. One method is to set up temporary supports under the cantilever section, but setting up temporary supports requires a lot of time and manpower, and the temporary supports need to be adjusted according to the construction progress. Another method is to set up slings or diagonal braces on the cantilever section, but this will apply additional load to the cantilever section and affect the overall structural strength. The invention provides a temporary reinforcement device suitable for bridge construction.

[0006] In a first aspect, the present invention provides a temporary reinforcement device suitable for bridge construction, comprising:

[0007] The first cable is used to connect two opposite cantilever segments;

[0008] The tensioning device is detachably mounted on the free end of the cantilever section and is used to tension the first cable.

[0009] An anchor cup, which is connected to the tensioning device, is used to anchor the first cable.

[0010] The first cable connects two opposing cantilever segments, allowing for temporary closure of the unfinished segments. This enhances the overall integrity and stiffness of the two cantilever segments, reduces the free-end effect, and minimizes wind-induced vibrations during typhoons. A tensioning device is used to tension the first cable, which applies a mutual tensile force to both cantilever segments. This force is aligned with the direction of the force experienced by the cantilever segments after bridge closure. Compared to existing technologies that use slings or braces for temporary reinforcement of cantilever segments, tensioning the first cable with a tensioning device ensures that the applied tensile force matches the force experienced by the cantilever segments after bridge closure, avoiding adverse effects on the cantilever structure. The tensioning device is detachably connected to the cantilever segments, allowing for installation or removal as needed. Compared to existing technologies that erect scaffolds under the cantilever segments, this method requires less time and fewer workers, minimizing time and labor costs.

[0011] Preferably, it further includes a first ear plate, which is disposed at the free end of the cantilever segment, and the tensioning device includes a fork ear main seat, which is bolted to the first ear plate.

[0012] The first ear plate is connected to the cantilever section, and the tensioning device is bolted to the first ear plate, which facilitates the installation and disassembly of the tensioning device. In the event of a typhoon warning or emergency, the temporary reinforcement device can be erected and reinforced as quickly as possible, greatly shortening the response time.

[0013] Preferably, it further includes a second ear plate, which is disposed above the first ear plate. The second ear plate is connected to a second cable via the tensioning device. The first cable and the second cable are positioned corresponding to each other.

[0014] The second cable is connected via a suspender.

[0015] The first and second cables, which are located at the same position, are connected by a suspender rod, which can minimize the sag of the first cable due to gravity. During tensioning, it can be tensioned to a relatively straight state without much force, giving the first cable greater axial stiffness, which is suitable for situations where the distance between two opposite cantilever sections is far. In addition, the second cable can also minimize the lateral deformation of the main cable under the action of crosswinds.

[0016] Preferably, both the first ear plate and the second ear plate are connected to the top surface of the cantilever section.

[0017] The first and second ear plates are placed on the top surface of the cantilever section to minimize the impact on the mating surface of the cantilever section.

[0018] Preferably, it further includes a cable connection device for being disposed between two opposing cantilever segments, the cable connection device being used to connect the first cable and the second cable.

[0019] The cable connection device is used to install between two opposite cantilever sections. When any one of the first or second cables is under stress, the stress can be transmitted to the other first or second cables through the cable connection device, which helps to improve the overall integrity of this temporary reinforcement device and thus enhance the stability of the two cantilever sections.

[0020] Preferably, the cable connection device is provided with a plurality of connecting lugs, which are used to connect the first cable and the second cable.

[0021] Preferably, the tensioning device further includes a first screw and a rotating sleeve, the first screw being connected to the first cable or the second cable, the rotating sleeve being fitted over the first screw, and rotating the rotating sleeve causing the first screw to approach or move away from the fork lug main seat.

[0022] Rotating the rotating sleeve causes the first screw to approach or move away from the fork lug main seat. Since the first screw is connected to the first cable or the second cable, rotating the rotating sleeve can tension or release the first cable or the second cable, which is convenient for operation.

[0023] Preferably, it further includes a limiting member connected to the first screw, the limiting member being used to limit the minimum distance between the first screw and the fork lug main seat.

[0024] The position of the limiting member on the first screw is determined according to the specific circumstances. The limiting member is connected to the first screw. Rotating the rotating sleeve causes the first screw to approach the fork lug main seat. When the limiting member approaches the rotating sleeve, the first screw can no longer approach the fork lug main seat, thus preventing the tension from exceeding the threshold and affecting the quality of the first or second cable, thereby affecting the reinforcement performance of this temporary reinforcement device. It also avoids applying additional load to the cantilever section.

[0025] Preferably, the device further includes a spring, one end of which is connected to the limiting member and the other end of which is connected to the fork lug main seat. The length of the spring is less than or equal to the distance from the side of the rotating sleeve facing away from the fork lug main seat to the fork lug main seat. The spring is used to limit the maximum distance between the first screw and the fork lug main seat.

[0026] One end of the spring is connected to the limiting member, and the other end is connected to the fork lug main seat. The length of the spring is less than or equal to the distance from the side of the rotating sleeve facing away from the fork lug main seat to the fork lug main seat. When the limiting member abuts against the rotating sleeve, the spring is in a free state or is stretched. Rotating the rotating sleeve causes the first screw to move away from the fork lug main seat, and the spring is stretched. The elastic force of the spring towards the fork lug main seat can limit the maximum distance between the first screw and the fork lug main seat, and can also prevent the first screw from detaching from the rotating sleeve.

[0027] Preferably, the first cable is provided with a damper.

[0028] The first cable is equipped with a damper to minimize abnormal vibrations caused by wind. The second cable is positioned above the first cable, with the damper installed on the first cable. This minimizes the sag caused by the damper's own weight compared to installing it on the second cable, making it suitable for situations where the distance between the two cantilever sections is relatively large.

[0029] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0030] This invention provides a temporary reinforcement device suitable for bridge construction, comprising a first cable, a tensioning device, and anchor cups. The first cable connects two opposing cantilever segments, enabling temporary closure of the two cantilever segments before construction is completed. This enhances the overall integrity and stiffness of the two cantilever segments, reduces the free-end effect, and minimizes wind-induced vibrations during typhoons. The tensioning device tensions the first cable, which applies a mutual tensile force to the two cantilever segments. The direction of this force is consistent with the direction of the force experienced by the cantilever segments after bridge closure. Compared to existing technologies that use suspenders or diagonal braces for temporary reinforcement of cantilever segments, tensioning the first cable with the tensioning device ensures that the tensile force applied by the first cable is consistent with the force experienced by the cantilever segments after bridge closure, avoiding adverse effects on the cantilever segment structure. The tensioning device is detachably connected to the cantilever section, allowing for installation or removal as needed. Compared to existing technologies that erect supports below the cantilever section, this method requires less time and fewer workers, minimizing time and labor costs. This device overcomes the limitations of existing methods for temporarily reinforcing incomplete cantilever sections. One method involves setting up temporary supports below the cantilever section, which requires significant time and manpower and needs adjustment based on construction progress. Another method involves installing slings or braces on the cantilever section, but this imposes additional loads and affects the overall structural strength. Attached Figure Description

[0031] Figure 1 This is a front view schematic diagram of the installation position of a temporary reinforcement device applicable to bridge construction according to this utility model;

[0032] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0033] Figure 3 This is a top view schematic diagram of a temporary reinforcement device applicable to bridge construction according to this utility model;

[0034] Figure 4 This is a structural schematic diagram of the cable connection device;

[0035] Figure 5 This is a front view schematic diagram of the tensioning device;

[0036] Figure 6 This is a top view of the tensioning device;

[0037] Figure 7 This is a structural diagram of the rotating sleeve;

[0038] Icons: 1-First cable, 2-Second cable, 3-Cable connection device, 4-Tensioning device, 5-Damper, 6-Cantilever section, 7-First lug, 8-Fork lug main seat, 9-Rotating sleeve, 901-Turntable, 10-Anchor cup, 11-Spring, 12-Limiting component, 13-First screw, 14-Second screw, 15-Second lug, 16-Connecting lug, 17-Hanging rod. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to experimental examples and specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. All technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0040] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0041] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0042] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0043] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0044] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0045] Example 1

[0046] like Figures 1 to 7 As shown, a temporary reinforcement device suitable for bridge construction includes:

[0047] First cable 1, the first cable 1 is used to connect two opposite cantilever segments 6;

[0048] Tensioning device 4 ( Figure 1 and Figure 2 (Not shown), the tensioning device 4 is detachably mounted on the free end of the cantilever section 6, and the tensioning device 4 is used to tension the first cable 1;

[0049] Anchor cup 10 is connected to the tensioning device 4 and is used to anchor the first cable 1.

[0050] In this embodiment, the cantilever segment 6 is the arch rib of an arch bridge. However, in actual use, the cantilever segment 6 can also be used as the cantilever segment of other bridges that have not yet been completed. This application does not impose any restrictions on this.

[0051] The first cable 1 connects two opposing cantilever segments 6, enabling temporary closure of the two incomplete cantilever segments 6. This enhances the overall integrity, symmetry, and stiffness of the two cantilever segments 6, reducing the free-end effect and minimizing wind-induced vibration and displacement during typhoons. The tensioning device 4 is used to tension the first cable 1. The prestressed first cable 1 applies a mutual tensile force to the two cantilever segments 6, the direction of which is consistent with the direction of the force on the cantilever segments 6 after the bridge is closed. Compared to existing technologies that use suspenders or diagonal braces for temporary reinforcement of the cantilever segments 6, tensioning the first cable 1 via the tensioning device 4 ensures that the tensile force applied by the first cable 1 is consistent with the force on the cantilever segments 6 after the bridge is closed, avoiding adverse effects on the structure of the cantilever segments 6. The tensioning device 4 can be detachably connected to the cantilever section 6, so the tensioning device 4 can be installed or removed as needed. Compared with the existing technology of erecting a support under the cantilever section 6, the installation or removal of the tensioning device 4 requires less time and fewer workers, which helps to minimize time and labor costs.

[0052] Further, such as Figure 2 As shown, it also includes a first ear plate 7, which is pre-welded to the free end of the cantilever segment 6. The tensioning device 4 includes a fork-shaped main seat 8, which is bolted to the first ear plate 7. In this embodiment 1, the first ear plate 7 is a steel component. The first ear plate 7 is connected to the cantilever segment 6, and the tensioning device 4 is bolted to the first ear plate 7, which facilitates the installation and disassembly of the tensioning device 4. Therefore, in the event of a typhoon warning or emergency, the temporary reinforcement device can be erected and reinforced as quickly as possible, greatly shortening the response time. The first ear plate 7 is pre-welded to the free end of the cantilever segment 6, which helps improve process efficiency. Moreover, the first ear plate 7 is easy to disassemble, which facilitates the inspection and maintenance of the structure and helps extend the service life of the structure.

[0053] It also includes a second ear plate 15, which is disposed above the first ear plate 7. The second ear plate 15 is connected to the second cable 2 through the tensioning device 4. The first cable 1 and the second cable 2, which are in corresponding positions, are connected by a hanger 17. The connection of the first cable 1 and the second cable 2, which are in corresponding positions, through the hanger 17 can minimize the sag of the first cable 1 due to gravity, and can be tensioned to a relatively straight state without much force during tensioning. This gives the first cable 1 greater axial stiffness, which is suitable for situations where the distance between two opposite cantilever segments 6 is large. Furthermore, the second cable 2 can also minimize the lateral deformation of the main cable under the action of crosswinds. Both the first ear plate 7 and the second ear plate 15 are connected to the top surface of the cantilever segment 6, so as to avoid affecting the mating surface of the cantilever segment 6 as much as possible. In this embodiment, one first cable 1 corresponds to at least one second cable 2, and the positions of the two ends of the second cable 2 do not completely correspond to the first cable 1 below it. The positions of the connecting ear plate 16 and the second ear plate 15 connected to the two ends of the second cable 2 are determined according to the actual situation, and this application does not impose any restrictions.

[0054] Further, such as Figure 2 As shown, the system also includes a cable connection device 3, which is disposed between two opposing cantilever segments 6 and connects the first cable 1 and the second cable 2. Because the cable connection device 3 is disposed between the two opposing cantilever segments 6, when either the first cable 1 or the second cable 2 is subjected to force, the force can be transmitted to the other first cable 1 and second cable 2 through the cable connection device 3, thereby improving the overall integrity of the temporary reinforcement device and enhancing the stability of the two cantilever segments 6. In this embodiment, the cable connection device 3 is a steel component, which can effectively reduce the sag of the cable itself due to the weight of the connection device.

[0055] like Figure 4 As shown, the cable connection device 3 is provided with multiple connecting lugs 16, which are used to connect the first cable 1 and the second cable 2. In this embodiment, the width of the cable connection device 3 is smaller than the distance between the two cantilever segments 6 on the same side, so the connection between the first cable 1 and the second cable 2 is "X" shaped. The cable connection device 3 can connect multiple first cables 1 and second cables 2, so that multiple cantilever ends form a joint force-bearing system, which greatly improves the wind resistance of the structure.

[0056] Further, such as Figure 5 and Figure 6As shown, the tensioning device 4 further includes a first screw 13 and a rotating sleeve 9. The first screw 13 is connected to the first cable 1 or the second cable 2. The rotating sleeve 9 is sleeved around the first screw 13. Rotating the rotating sleeve 9 causes the first screw 13 to approach or move away from the fork lug main seat 8. A turntable 901 is provided on the outside of the rotating sleeve 9 for easy operation.

[0057] like Figure 5 and Figure 6 As shown, it also includes a limiting member 12, which is connected to the first screw 13. The limiting member 12 is used to limit the minimum distance between the first screw 13 and the fork lug main seat 8. The position of the limiting member 12 on the first screw 13 is determined according to the specific situation. The limiting member 12 is connected to the first screw 13. Rotating the rotating sleeve 9 causes the first screw 13 to approach the fork lug main seat 8. When the limiting member 12 approaches the rotating sleeve 9, the first screw 13 can no longer approach the fork lug main seat 8, avoiding tension exceeding the threshold and affecting the quality of the first cable 1 or the second cable 2, thereby affecting the reinforcement performance of this temporary reinforcement device, and also avoiding applying additional load to the cantilever section 6.

[0058] like Figure 5 and Figure 6 As shown, the device also includes a spring 11, one end of which is connected to the limiting member 12 and the other end to the fork lug main seat 8. The length of the spring 11 is less than or equal to the distance from the side of the rotating sleeve 9 facing away from the fork lug main seat 8 to the fork lug main seat 8. The spring 11 is used to limit the maximum distance between the first screw 13 and the fork lug main seat 8. Since one end of the spring 11 is connected to the limiting member 12 and the other end to the fork lug main seat 8, and the length of the spring 11 is less than or equal to the distance from the side of the rotating sleeve 9 facing away from the fork lug main seat 8 to the fork lug main seat 8, when the limiting member 12 abuts against the rotating sleeve 9, the spring 11 is in a free state or stretched. Rotating the rotating sleeve 9 causes the first screw 13 to move away from the fork lug main seat 8, thus stretching the spring 11. The elastic force of the spring 11 towards the fork lug main seat 8 can limit the maximum distance between the first screw 13 and the fork lug main seat 8, and also prevent the first screw 13 from detaching from the rotating sleeve 9.

[0059] In this embodiment, as Figure 5 and Figure 6As shown, it also includes a second screw 14. The axes of the second screw 14 and the first screw 13 coincide. One end of the second screw 14 is fixed to the fork lug main seat 8, and the other end extends into the rotating sleeve 9. When the rotating sleeve 9 is rotated, the first screw 13 approaches or moves away from the second screw 14. In this embodiment, the rotating sleeve 9 has a thread in only one direction, and the thread directions of the first screw 13 and the second screw 14 are opposite. However, in actual use, threads in two directions can also be provided inside the rotating sleeve 9, and the thread directions of the first screw 13 and the second screw 14 can also be the same.

[0060] like Figure 1 and Figure 2 As shown, the first cable 1 is equipped with a damper 5. The damper 5 on the first cable 1 can minimize abnormal vibrations caused by wind. Furthermore, the second cable 2 is positioned above the first cable 1, and the damper 5 is installed on the first cable 1. Compared to installing it on the second cable 2, this minimizes the sag caused by the damper 5's own weight, making it suitable for situations where the two opposing cantilever segments 6 are far apart.

[0061] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A temporary reinforcement device suitable for bridge construction, characterized in that, Include: The first cable (1) is used to connect two opposite cantilever segments (6); Tensioning device (4), which is detachably installed at the free end of the cantilever section (6), is used to tension the first cable (1); Anchor cup (10) is connected to the tensioning device (4) and is used to anchor the first cable (1).

2. The temporary reinforcement device for bridge construction according to claim 1, characterized in that, It also includes a first ear plate (7), which is disposed at the free end of the cantilever section (6), and the tensioning device (4) includes a fork ear main seat (8), which is bolted to the first ear plate (7).

3. A temporary reinforcement device for bridge construction according to claim 2, characterized in that, It also includes a second ear plate (15), which is disposed above the first ear plate (7). The second ear plate (15) is connected to the second cable (2) through the tensioning device (4). The first cable (1) and the second cable (2) which are in corresponding positions are connected by a hanger (17).

4. A temporary reinforcement device suitable for bridge construction according to claim 3, characterized in that, The first ear plate (7) and the second ear plate (15) are both connected to the top surface of the cantilever section (6).

5. A temporary reinforcement device for bridge construction according to claim 3, characterized in that, It also includes a cable connection device (3) for being disposed between two opposing cantilever segments (6) and for connecting the first cable (1) and the second cable (2).

6. A temporary reinforcement device for bridge construction according to claim 5, characterized in that, The cable connection device (3) is provided with a plurality of connecting lugs (16), which are used to connect the first cable (1) and the second cable (2).

7. A temporary reinforcement device suitable for bridge construction according to any one of claims 3-6, characterized in that, The tensioning device (4) also includes a first screw (13) and a rotating sleeve (9). The first screw (13) is connected to the first cable (1) or the second cable (2). The rotating sleeve (9) is sleeved on the first screw (13). Rotating the rotating sleeve (9) causes the first screw (13) to approach or move away from the fork lug main seat (8).

8. A temporary reinforcement device for bridge construction according to claim 7, characterized in that, It also includes a limiting member (12) connected to the first screw (13), the limiting member (12) being used to limit the minimum distance between the first screw (13) and the fork lug main seat (8).

9. A temporary reinforcement device for bridge construction according to claim 8, characterized in that, It also includes a spring (11), one end of which is connected to the limiting member (12) and the other end is connected to the fork lug main seat (8). The length of the spring (11) is less than or equal to the distance from the side of the rotating sleeve (9) facing away from the fork lug main seat (8) to the fork lug main seat (8). The spring (11) is used to limit the maximum distance between the first screw (13) and the fork lug main seat (8).

10. A temporary reinforcement device for bridge construction according to any one of claims 1-6, characterized in that, The first cable (1) is equipped with a damper (5).

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