Steel arch bridge foot rod positioning device

Abstract

This utility model provides a positioning device for the tie rods at the foot of a steel arch bridge, relating to the field of bridge construction technology. The device includes a splicing frame, positioning plates, a connecting frame, and a limiting plate. The splicing frame comprises multiple vertically arranged support beams and connecting beam assemblies detachably connected between the support beams. Each support beam includes multiple sequentially detachably connected sub-beams. Multiple positioning plates are configured, rotatably connected to the splicing frame along its height direction. The positioning plates are parallel to each other, and a connecting frame connects adjacent positioning plates. The limiting plate is located below the bottommost positioning plate, and a connecting frame connects the limiting plate to the bottommost positioning plate. This utility model provides a steel arch bridge foot tie rod positioning device with advantages such as convenient assembly and transportation of the splicing frame, easy angle adjustment of the positioning plates, and higher fault tolerance.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and in particular to a positioning device for tie rods at the foot of a steel arch bridge. Background Technology

[0002] The arch foot inclination angle plays a controlling role in the overall arch shape of the bridge, directly affecting the structural safety performance, especially the positioning accuracy of the bearing plate and steel tie rods. In conventional construction techniques, the bearing plate is usually positioned by providing the coordinates, elevations, and inclination angle of the four corner points of the arch foot bearing plate, as well as the inclination angle of the main chord of the arch foot. However, the positioning of the steel tie rods relies solely on the upper and lower bearing plates for control. Due to the large length of the steel tie rods, under the loads of their own weight and concrete pouring, it is difficult to ensure that the steel tie rods are perpendicular to the upper and lower bearing plates. This results in the steel tie rods forming a deflection angle with the top plane of the flat box girder, thereby weakening the prestressing effect.

[0003] Patent application CN202310444426.5 discloses a device and method for precise positioning of steel tie rods at the arch foot of a steel truss arch bridge. Although the steel tie rods are positioned and supported by the steel frame structure, the steel frame and the positioning steel plate are connected by welding. The steel frames are also inconvenient to disassemble and assemble. During use, on-site assembly and welding are required. Once the components are connected, they cannot be adjusted, resulting in a low fault tolerance rate. Therefore, situations where the positioning is lost due to unqualified welding angles occur frequently. Utility Model Content

[0004] The purpose of this utility model is to provide a positioning device for the tie rod at the foot of a steel arch bridge, which has the advantages of easy assembly and transportation of the splicing frame, easy angle adjustment of the positioning plate, and higher fault tolerance.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model provides a positioning device for the tie rod at the foot of a steel arch bridge, including a splicing frame, a positioning plate, a connecting frame, and a limiting plate;

[0007] The splicing frame includes multiple vertically arranged support beams and a connecting beam assembly that is detachably connected between the multiple support beams. Each support beam includes multiple sub-beams that are detachably connected in sequence.

[0008] The positioning plates are configured in multiple ways, and the multiple positioning plates are rotatably connected to the splicing frame in sequence along the height direction of the splicing frame. Each positioning plate is parallel to each other and is provided with a first through hole for the steel tie rod to pass through. The connecting frame is connected between two adjacent positioning plates.

[0009] The limiting plate is located below the bottommost positioning plate, and the connecting frame is connected between the limiting plate and the bottommost positioning plate. The limiting plate is provided with a second through hole for the steel tie rod to pass through.

[0010] In an optional embodiment, one of the two adjacent sub-beams has a positioning rod at one end, and the other sub-beam has a positioning groove at one end for inserting the positioning rod. The mating ends of the two sub-beams are also provided with connecting plates, and the connecting plates have connecting holes for the connecting parts to pass through.

[0011] In an optional embodiment, the connecting beam assembly includes a plurality of crossbars arranged perpendicular to the support beam;

[0012] In each of the supporting beams, at least one of the sub-beams is provided with a fixing plate. The fixing plate is connected to a connecting rod and a threaded sleeve. The connecting rod passes through the end of the crossbar, and the threaded sleeve is used to press the end of the crossbar onto the fixing plate.

[0013] In an optional embodiment, the sub-beam with the fixing plate includes a first side and a second side that are connected in sequence and arranged perpendicularly to each other, and both the first side and the second side are provided with the fixing plate.

[0014] In an optional embodiment, the connecting beam assembly further includes multiple support rods, each support rod having an angle with the horizontal plane, and both ends of each support rod being detachably connected to any two of the support beams.

[0015] In an optional embodiment, the connecting frame includes a frame and reinforcing ribs connected to the frame, the reinforcing ribs being "X" shaped.

[0016] In an optional embodiment, the steel arch bridge foot tie rod positioning device further includes a reinforcement component connected between each of the positioning plates and the splicing frame, so as to cooperate with the splicing frame to define the position of each of the positioning plates relative to the splicing frame.

[0017] In an optional embodiment, the reinforcement component includes a first support frame and a first abutment rod, the first support frame being connected to the support beam, the first abutment rod being threadedly connected to the first support frame, and the first abutment rod being used to abut against the top surface of the positioning plate.

[0018] In an optional embodiment, the reinforcement component includes a second support frame and a second abutment, the second support frame being connected to the support beam, the second abutment being threadedly connected to the second support frame, and the second abutment being used to abut against the bottom surface of the positioning plate.

[0019] In an optional implementation, the axes of the first abutment and the second abutment do not coincide.

[0020] The steel arch bridge foot tie rod positioning device provided by this utility model can produce the following beneficial effects:

[0021] Compared to existing technologies, the steel arch bridge foot tie rod positioning device provided by this utility model achieves the splicing effect of the splicing frame through detachable connections between the support beams and connecting beam assemblies, as well as detachable connections between sub-beams. This facilitates the overall assembly and transportation of the splicing frame, and also allows for easy adjustment of the height of each support beam. Furthermore, the limiting plate and each positioning plate are connected as a whole by a connecting frame, and each positioning plate is rotatably connected to the splicing frame. When used in conjunction with the splicing frame, this facilitates the adjustment of the positioning plate angle and provides a higher tolerance for error. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 A front view of a steel arch bridge foot tie rod positioning device in use, provided in an embodiment of this utility model;

[0024] Figure 2 A three-dimensional structural schematic diagram of a steel arch bridge foot tie rod positioning device provided in this embodiment of the present invention during use;

[0025] Figure 3 A three-dimensional structural diagram of the ends of two adjacent sub-beams when they are joined together, provided for an embodiment of this utility model;

[0026] Figure 4 A partial three-dimensional structural diagram of a steel arch bridge foot tie rod positioning device provided in this embodiment of the present invention during use;

[0027] Figure 5 for Figure 4 A magnified view of part A.

[0028] Icons: 1-Assembly frame; 11-Support beam; 111-Sub-beam; 1111-First side; 1112-Second side; 112-Positioning rod; 113-Connecting plate; 1131-Connecting hole; 114-Fixing plate; 115-Connecting rod; 116-Threaded sleeve; 12-Connecting beam assembly; 121-Supporting rod; 122-First crossbar; 123-Second crossbar; 2-Positioning plate; 21-First through hole; 3-Connecting frame; 31-Frame; 32-Reinforcing rib; 4-Limiting plate; 41-Second through hole; 5-Reinforcing component; 51-First support frame; 52-First abutment rod; 53-Second support frame; 54-Second abutment rod; 6-Connector; 7-Steel tie rod. Detailed Implementation

[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0033] The first aspect of this utility model is to provide a positioning device for the tie rod at the foot of a steel arch bridge, such as... Figure 1 and Figure 2 As shown, it includes splicing frame 1, positioning plate 2, connecting frame 3 and limiting plate 4;

[0034] The splicing frame 1 includes multiple vertically arranged support beams 11 and a connecting beam assembly 12 that is detachably connected between the multiple support beams 11. Each support beam 11 includes multiple sub-beams 111 that are detachably connected in sequence.

[0035] Multiple positioning plates 2 are configured, and multiple positioning plates 2 are rotatably connected to the splicing frame 1 along the height direction of the splicing frame 1. Each positioning plate 2 is parallel to each other and is provided with a first through hole 21 for the steel tie rod to pass through. A connecting frame 3 is connected between two adjacent positioning plates 2.

[0036] The limiting plate 4 is located below the bottommost positioning plate 2. A connecting frame 3 is connected between the limiting plate 4 and the bottommost positioning plate 2. The limiting plate 4 is provided with a second through hole 41 for the steel tie rod to pass through.

[0037] Compared to existing technologies, the steel arch bridge foot tie rod positioning device provided in the above embodiment achieves the splicing effect of the splicing frame 1 through the detachable connection between the support beam 11 and the connecting beam assembly 12, as well as the detachable connection between the sub-beams 111. This facilitates the overall assembly and transportation of the splicing frame 1, and also makes it easy to adjust the height of each support beam 11. In addition, the limiting plate 4 and each positioning plate 2 are connected as a whole through the connecting frame 3. Each positioning plate 2 is rotatably connected to the splicing frame 1 and used in conjunction with the splicing frame 1, facilitating the adjustment of the angle of the positioning plate 2 and increasing the fault tolerance rate.

[0038] In alternative implementations, such as Figure 3 As shown, in two adjacent sub-beams 111, one sub-beam 111 has a positioning rod 112 at its end, and the other sub-beam 111 has a positioning groove for inserting the positioning rod 112 at its end. The ends of the two sub-beams 111 that cooperate are also provided with connecting plates 113, and the connecting plates 113 have connecting holes 1131 for the connector 6 to pass through.

[0039] When connecting two adjacent sub-beams 111, the positioning rod 112 at the end of one sub-beam 111 is inserted into the positioning groove at the end of the other sub-beam 111. At the same time, the connecting plates 113 at the aforementioned ends of the two sub-beams 111 are simultaneously connected. The connector 6 passes through the connecting hole 1131 of the connecting plate 113 on the two sub-beams 111, thereby locking the relative position of the two sub-beams 111.

[0040] The connector 6 may include a bolt and a nut. After the bolt passes through the connecting hole 1131 on the two connecting plates 113, the nut is connected to the bolt to lock the position between the two connecting plates 113.

[0041] In an optional embodiment, the connecting beam assembly 12 includes a plurality of crossbars arranged perpendicular to the support beam 11; in each support beam 11, at least one sub-beam 111 is provided with a fixing plate 114, the fixing plate 114 is connected with a connecting rod 115 and a threaded sleeve 116, the connecting rod 115 passes through the end of the crossbar, the threaded sleeve 116 is threadedly connected to the connecting rod 115, and the threaded sleeve 116 is used to press the end of the crossbar onto the fixing plate 114.

[0042] The purpose of the aforementioned connecting beam assembly 12 is to ensure the stability of the relative positions between each support beam 11, so that each support beam 11 forms a stable support structure.

[0043] When installing the crossbar, the connecting rod 115 on the fixing plate 114 passes through the end of the crossbar, and then the screw sleeve 116 is tightened on the connecting rod 115 to lock the position of the crossbar relative to the sub-beam 111.

[0044] In the above embodiments, the detachable connection structure between the crossbar and the sub-beam 111 is simple and easy for personnel to operate.

[0045] In an optional embodiment, the aforementioned multiple crossbars may include a first crossbar 122 and a second crossbar 123 that are both horizontally arranged. The first crossbar 122 is perpendicular to the second crossbar 123. The two ends of the first crossbar 122 are detachably connected to two support beams 11 that are arranged opposite to each other along the extension direction of the first crossbar 122. The two ends of the second crossbar 123 are detachably connected to two support beams 11 that are arranged opposite to each other along the extension direction of the second crossbar 123.

[0046] like Figure 3 As shown, the end of the first crossbar 122 can be inserted into the connecting rod 115 and locked onto the connecting rod 115 by the screw sleeve 116. The installation method of the second crossbar 123 is the same.

[0047] In alternative implementations, such as Figure 3 As shown, in the sub-beam 111 with a fixing plate 114, the sub-beam 111 includes a first side 1111 and a second side 1112 that are connected in sequence and arranged perpendicularly to each other, and both the first side 1111 and the second side 1112 are provided with fixing plates 114.

[0048] In the above embodiments, since the first side 1111 and the second side 1112 are perpendicular, both the first side 1111 and the second side 1112 are provided with fixing plates 114 to facilitate the connection of the first crossbar 122 and the second crossbar 123 to the sub-beam 111 respectively.

[0049] In alternative implementations, such as Figure 2As shown, in order to further increase the structural stability of the splicing frame 1, the connecting beam assembly 12 also includes multiple support rods 121. Each support rod 121 has an angle with the horizontal plane, and the two ends of each support rod 121 are detachably connected to any two support beams 11.

[0050] In the above embodiments, by connecting the support rod 121 and the support beam 11, the support rod 121 can provide reinforcement and support to the support beam 11.

[0051] In alternative implementations, such as Figure 2 As shown, the splicing frame 1 includes three sets of support beams that are evenly distributed along the horizontal direction that gradually approaches the limiting plate 4; each set of support beams includes three support beams 11, the three support beams 11 in each set are of the same height, and the support beams 11 in different sets are of different heights; along the horizontal direction that gradually approaches the limiting plate 4, the heights of the three sets of support beams decrease arithmetically.

[0052] Specifically, the support beams 11 in the same group are connected by the first crossbar 122, and the support beams 11 in different groups are connected by the second crossbar 123.

[0053] The aforementioned splicing frame 1 can accommodate the inclined steel tie rod 7, ensuring that the positioning plate 2 and the limiting plate 4 stably limit the steel tie rod 7.

[0054] In alternative implementations, such as Figure 4 As shown, the connecting frame 3 includes a frame 31 and a reinforcing rib 32 connected to the frame 31. The reinforcing rib 32 is in the shape of an "X".

[0055] Of the two adjacent positioning plates 2, one positioning plate 2 is connected to the top of the frame 31, and the other positioning plate 2 is connected to the bottom of the frame 31. Similarly, the bottommost positioning plate 2 is connected to the top of the frame 31, and the limiting plate 4 is connected to the bottom of the frame 31. The reinforcing ribs 32 are connected to the frame 31 in an "X" shape to ensure the stability of the frame 31 structure.

[0056] Specifically, when installing the steel tie rod 7, the steel tie rod 7 passes through the first through hole 21 on each positioning plate 2 and finally passes through the second through hole 41 on the limiting plate 4. Nuts are sleeved on both ends of the steel tie rod 7, and the nut at one end abuts against the surface of the limiting plate 4 through the steel tie rod 7.

[0057] In alternative implementations, such as Figure 2 and Figure 4 As shown, each positioning plate 2 is rotatably connected to the top of a set of support beams. When the splicing frame 1 includes three sets of support beams, the positioning plates 2 are configured as three corresponding to each other.

[0058] The positioning plate 2 can be hinged to the top of the three support beams 11 in the corresponding group via a rotating shaft and a support seat. For example, the aforementioned rotating shaft is installed on the positioning plate 2, and a support seat is installed at the top of the support beam 11. The rotating shaft and the support seat are hinged together, and a nut is threaded onto the rotating shaft. The nut is used to limit the position of the positioning plate 2 along the axis of the rotating shaft.

[0059] In alternative implementations, such as Figure 1 and Figure 2 As shown, the steel arch bridge foot tie rod positioning device also includes a reinforcement component 5, which is connected between each positioning plate 2 and the splicing frame 1 to cooperate with the splicing frame 1 to limit the position of each positioning plate 2 relative to the splicing frame 1.

[0060] The reinforcement component 5 can work with the splicing frame 1 to limit the position of each positioning plate 2 relative to the splicing frame 1, thereby improving the ability to position and support the steel tie rod 7.

[0061] In each set of support beams, a reinforcement component 5 may be provided between each support beam 11 and the positioning plate 2, or a reinforcement component 5 may be provided between some of the support beams 11 and the positioning plate 2.

[0062] In an optional embodiment, when each set of support beams includes three support beams 11, a reinforcing component 5 is provided between the middle support beam 11 and the positioning plate 2.

[0063] In alternative implementations, such as Figure 5 As shown, the reinforcement component 5 includes a first support frame 51 and a first abutment 52. The first support frame 51 is connected to the support beam 11, and the first abutment 52 is threadedly connected to the first support frame 51. The first abutment 52 is used to abut against the top surface of the positioning plate 2.

[0064] In the above embodiment, the first abutment rod 52 can abut against the top surface of the positioning plate 2. The position where the first abutment rod 52 abuts can be a part of the positioning plate 2 that has an upward tendency, resisting the gravity of the positioning plate 2, so that the positioning plate 2 can be kept in place. Figure 5 The position in the middle.

[0065] Since the first abutment 52 is threadedly connected to the first support frame 51, the user can adjust the length of the first abutment 52 extending below the first support frame 51 by rotating the first abutment 52.

[0066] Specifically, the cross-section of the first support frame 51 is "L" shaped, and two first support frames 51 are configured. The two first support frames 51 are symmetrically distributed on the surface of the same support beam 11. Through the connection between the first support frame 51 and the support beam 11, the first support frame 51 achieves the supporting effect on the position of the first abutment 52.

[0067] In an optional embodiment, the reinforcement component 5 includes a second support frame 53 and a second abutment 54. The second support frame 53 is connected to the support beam 11, and the second abutment 54 is threadedly connected to the second support frame 53. The second abutment 54 is used to abut against the bottom surface of the positioning plate 2.

[0068] In the above embodiment, the second abutment 54 can abut against the bottom surface of the positioning plate 2. The position where the second abutment 54 abuts can be the part of the positioning plate 2 that has a downward swing tendency, resisting the gravity of the positioning plate 2, so that the positioning plate 2 can be kept in place. Figure 5 The position in the middle.

[0069] Since the second abutment 54 is threadedly connected to the second support frame 53, the user can adjust the length of the second abutment 54 extending above the second support frame 53 by rotating the second abutment 54.

[0070] The first abutment 52 and the second abutment 54 work together to achieve the abutment support effect on the connection angle of the positioning plate 2 on the support beam 11, thereby improving the stability of the angle of action of the positioning plate 2 on the support beam 11.

[0071] In an optional embodiment, the axes of the first abutment 52 and the second abutment 54 do not coincide.

[0072] The above-described embodiments enable the first abutment 52 and the second abutment 54 to provide better auxiliary support for the positioning plate 2.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A positioning device for tie rods at the foot of a steel arch bridge, characterized in that, It includes a splicing frame (1), a positioning plate (2), a connecting frame (3), and a limiting plate (4); The splicing frame (1) includes multiple vertically arranged support beams (11) and a connecting beam assembly (12) that is detachably connected between the multiple support beams (11). Each support beam (11) includes multiple sub-beams (111) that are detachably connected in sequence. The positioning plate (2) is configured in multiple ways. The multiple positioning plates (2) are sequentially rotatably connected to the splicing frame (1) along the height direction of the splicing frame (1). Each positioning plate (2) is parallel to each other and is provided with a first through hole (21) for the steel tie rod to pass through. The connecting frame (3) is connected between two adjacent positioning plates (2). The limiting plate (4) is located below the bottommost positioning plate (2), and the connecting frame (3) is connected between the limiting plate (4) and the bottommost positioning plate (2). The limiting plate (4) is provided with a second through hole (41) for the steel tie rod to pass through.

2. The steel arch bridge foot tie rod positioning device according to claim 1, characterized in that, In the two adjacent sub-beams (111), one sub-beam (111) has a positioning rod (112) at its end, and the other sub-beam (111) has a positioning groove for inserting the positioning rod (112) at its end. The ends of the two sub-beams (111) that cooperate are also provided with a connecting plate (113). The connecting plate (113) has a connecting hole (1131) for the connector (6) to pass through.

3. The steel arch bridge foot tie rod positioning device according to claim 1, characterized in that, The connecting beam assembly (12) includes multiple crossbars arranged perpendicular to the supporting beam (11); In each of the support beams (11), at least one of the sub-beams (111) is provided with a fixing plate (114), the fixing plate (114) is connected with a connecting rod (115) and a threaded sleeve (116), the connecting rod (115) passes through the end of the crossbar, and the threaded sleeve (116) is used to press the end of the crossbar onto the fixing plate (114).

4. The steel arch bridge foot tie rod positioning device according to claim 3, characterized in that, In the sub-beam (111) provided with the fixing plate (114), the sub-beam (111) includes a first side (1111) and a second side (1112) that are connected in sequence and arranged perpendicularly to each other, and both the first side (1111) and the second side (1112) are provided with the fixing plate (114).

5. The steel arch bridge foot tie rod positioning device according to claim 3, characterized in that, The connecting beam assembly (12) also includes multiple support rods (121), each of which has an angle with the horizontal plane, and both ends of each support rod (121) are detachably connected to any two of the support beams (11).

6. The steel arch bridge foot tie rod positioning device according to claim 1, characterized in that, The connecting frame (3) includes a frame (31) and a reinforcing rib (32) connected to the frame (31), the reinforcing rib (32) being "X" shaped.

7. The steel arch bridge foot tie rod positioning device according to any one of claims 1-6, characterized in that, The steel arch bridge foot tie rod positioning device also includes a reinforcement component (5), which is connected between each of the positioning plates (2) and the splicing frame (1) to cooperate with the splicing frame (1) to limit the position of each of the positioning plates (2) relative to the splicing frame (1).

8. The steel arch bridge foot tie rod positioning device according to claim 7, characterized in that, The reinforcement component (5) includes a first support frame (51) and a first abutment (52). The first support frame (51) is connected to the support beam (11), and the first abutment (52) is threadedly connected to the first support frame (51). The first abutment (52) is used to abut against the top surface of the positioning plate (2).

9. The steel arch bridge foot tie rod positioning device according to claim 8, characterized in that, The reinforcement component (5) includes a second support frame (53) and a second abutment (54). The second support frame (53) is connected to the support beam (11), and the second abutment (54) is threadedly connected to the second support frame (53). The second abutment (54) is used to abut against the bottom surface of the positioning plate (2).

10. The steel arch bridge foot tie rod positioning device according to claim 9, characterized in that, The axes of the first abutment (52) and the second abutment (54) do not coincide.

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