Permanent tie bar traction river-crossing bearing device and mounting method thereof

Abstract

The invention belongs to the technical field of bridge engineering, and discloses a permanent tie bar traction river-crossing load-bearing device and an installation method thereof.The permanent tie bar traction river-crossing load-bearing device comprises a load-bearing pipe, the load-bearing pipe is sleeved with an outer sleeve, the load-bearing pipe is rotationally connected with the outer sleeve, the outer portion of the outer sleeve is used for bearing a permanent tie bar, and the outer portion of the outer sleeve is connected with the load-bearing pipe; and the outer sleeve rotates around the bearing tube when the permanent tie bar is pulled to move along the axial direction vertical to the outer sleeve. The permanent tie bar traction river-crossing bearing device can realize quick mounting and dismounting of the permanent tie bar, is safe and reliable, is low in cost, and can solve the problem of permanent tie bar mounting under complex topographic conditions and construction environments.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a permanent tie rod traction river crossing load bearing device and an installation method thereof. Background Art

[0002] Arch bridges are divided into two types based on the order in which the beams and arches are installed: beams first, arches second, and arches first, beams second. Both types are directly related to the arch bridge installation method. For example, if the arch-first, beam-later method is used, a tied arch bridge requires permanent ties after the arch ribs are installed to resist the external thrust of the arch ribs. The thrust arch is resisted by the mountain, eliminating the need for permanent ties. Common methods for installing permanent ties include dragging by workers, direct traction with a winch, and towing by ship. However, all of these methods have numerous drawbacks, such as slow installation, low efficiency, and unsafe conditions. Since permanent ties are the lifeline of arch bridges, solving the problem of efficient and safe installation of permanent ties is a key focus of continuous research and development by technicians during construction. Summary of the Invention

[0003] In view of the above defects or deficiencies in the prior art, it is desired to provide a permanent tie rod towing river crossing load bearing device and an installation method thereof, which can at least improve the installation speed and efficiency of the permanent tie rod and is safe and reliable.

[0004] The present invention provides a permanent tie rod towing river crossing load bearing device, comprising: a load bearing tube, an outer sleeve is provided on the outside of the load bearing tube, the load bearing tube is rotatably connected to the outer sleeve, the outside of the outer sleeve is used to support the permanent tie rod, and the outer sleeve rotates around the load bearing tube when the permanent tie rod is pulled and moved along an axial direction perpendicular to the outer sleeve.

[0005] In addition, the permanent tie rod traction river crossing load bearing device of the present invention may also have the following additional technical features: In some embodiments, bearings are respectively provided on the outer sides of the side walls of both ends of the load-bearing tube along its own axial direction, and the load-bearing tube is rotatably connected to the outer sleeve through the bearings.

[0006] In some embodiments, the length of the load-bearing tube extending along its own axial direction is greater than the length of the outer sleeve extending along its own axial direction; The load-bearing tube is provided with a first limiting member on the outside of at least one end side wall along its own axial direction. The first limiting member is provided at a position where the load-bearing tube exceeds the outer sleeve. The first limiting member is used to limit the moving position of the outer sleeve in its own axial direction.

[0007] In some embodiments, the first limiting member includes a circular limiting plate, and the diameter of the circular limiting plate is larger than the outer diameter of the outer sleeve.

[0008] In some embodiments, support members are provided on the outer side walls of both ends of the load-bearing tube along its own axial direction, and the support members are used to support and fix the load-bearing tube.

[0009] In some embodiments, the support member includes a rope presser and a steel rope.

[0010] In some embodiments, the load-bearing tube is provided with second limiting members on the outer side walls of both ends along its own axial direction, and the second limiting members are used to limit the axial movement position of the permanent tie rod along the outer sleeve.

[0011] In some embodiments, the second limiting member includes at least two concentrically arranged limiting rings, two adjacent limiting rings are fixedly connected by a limiting rod, and the limiting rings are concentrically arranged with the outer sleeve.

[0012] In some embodiments, the load-bearing tube and the outer sleeve are both metal tubes.

[0013] A second aspect of the present invention provides a method for installing a permanent tie rod, the method being implemented based on the permanent tie rod pulling the river-crossing load bearing device described in any embodiment of the present application, the method comprising: One end of the permanent tie rod is pre-fixed at the starting end of the arch rib, and the other end is pulled by the wire rope of the winch; The winch tightens the wire rope to pull the permanent tie rod on the outer surface of the outer sleeve along the axial direction perpendicular to the outer sleeve, driving the outer sleeve to rotate around the load-bearing pipe, so that the permanent tie rod can cross the river.

[0014] The permanent tie rod traction cross-river load-bearing device provided by the present invention has a simple structure, and utilizes a rotatably connected load-bearing tube and an outer sleeve to realize rapid installation and disassembly of the permanent tie rod, and converts sliding friction into rolling friction, thereby reducing the traction resistance of the permanent tie rod, improving the installation speed and efficiency of the permanent tie rod, and is safe, reliable and low-cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 An exemplary structural diagram of a permanent tie rod towing river-crossing load bearing device provided in an embodiment of the present application; Figure 2 for Figure 1 Middle AA section.

[0016] In the above picture: 10 load-bearing tube; 20 outer sleeve; 30 bearing; 40 permanent tie rod; 50 first limiter; 60 rope presser; 70 wire rope; 80 second limiter; 801 limit ring; 802 limit rod. DETAILED DESCRIPTION

[0017] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant invention and are not intended to limit the invention. It should also be noted that, for ease of description, only portions relevant to the invention are shown in the accompanying drawings.

[0018] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms "a," "the," and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

[0020] Unless the context requires otherwise, throughout the specification and claims, the term "comprising" is to be construed in an open, inclusive sense, that is, meaning "including, but not limited to."

[0021] Throughout the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of the present disclosure. Schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be included in any one or more embodiments or examples in any appropriate manner.

[0022] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0023] refer to Figure 1 and Figure 2An embodiment of the present application provides a permanent tie rod towing river crossing load bearing device, comprising: a load bearing tube 10, an outer sleeve 20 is provided on the outside of the load bearing tube 10, the load bearing tube 10 is rotatably connected to the outer sleeve 20, the outside of the outer sleeve 20 is used to carry the permanent tie rod 40, and when the permanent tie rod 40 moves along the axial direction perpendicular to the outer sleeve 20, the outer sleeve 20 rotates around the load bearing tube 10.

[0024] Specifically, the cross-river load bearing device can pull the permanent tie rod 40 from one end of the arch rib 90 to the other end of the arch rib 90 on the opposite bank, and the entire process relies on the cross-river load bearing device to slide. The cross-river load bearing device includes a bearing tube 10 and an outer sleeve 20 that are rotatably connected. The outer sleeve 20 is rotatably sleeved on the outer surface of the bearing tube 10. The outer sleeve 20 and the bearing tube 10 are coaxially arranged. The permanent tie rod 40 is pulled and moved on the outer surface of the outer sleeve 20 along the axial direction perpendicular to the outer sleeve 20 to achieve the cross-river fixation of the permanent tie rod 40. In the process of the movement of the permanent tie rod 40, the outer sleeve 20 rotates on the bearing tube 10, reducing the friction between the permanent tie rod 40 and the outer sleeve 20, converting the traditional sliding friction into rolling friction, reducing the traction resistance of the permanent tie rod 40, and improving the installation speed and efficiency of the permanent tie rod 40. It is safe, reliable and low-cost.

[0025] The permanent tie rod traction river-crossing load-bearing device provided by the present invention has a simple structure, can realize the rapid installation and disassembly of the permanent tie rod 40, has a low cost, and can be used in a turnover manner. It can solve the installation problem of the permanent tie rod 40 under complex terrain conditions and construction environments. It has good guiding value for tie arch bridges with the arch-first and beam-later installation sequence. It is particularly suitable for the arch rib 90 using floating, overall lifting, rotation and other processes. It has high promotion value and is suitable for the installation of heavy tie rods in the construction of bridges in large water areas such as the Yangtze River and the Yellow River.

[0026] In some embodiments, reference Figure 1 and Figure 2 The load-bearing tube 10 is provided with bearings 30 on the outer side walls of both ends along its own axial direction, and the load-bearing tube 10 is rotatably connected to the outer sleeve 20 through the bearings 30.

[0027] Specifically, the outer sleeve 20 is rotatably connected to the load-bearing tube 10 through the bearings 30, and the axial movement of the outer sleeve 20 is limited to prevent the outer sleeve 20 from moving out of the load-bearing tube 10 at both ends. The bearings 30 can be symmetrically distributed along the axial direction of the load-bearing tube 10. The dual bearings 30 symmetrically support the outer sleeve 20 to form a stable structure, thereby evenly applying force to the outer sleeve 20.

[0028] In some embodiments, reference Figure 1 , the length of the load-bearing tube 10 extending along its own axial direction is greater than the length of the outer sleeve 20 extending along its own axial direction; The load-bearing tube 10 is provided with a first limiting member 50 on the outside of at least one end side wall along its own axial direction. The first limiting member 50 is located at a position where the load-bearing tube 10 exceeds the outer sleeve 20. The first limiting member 50 is used to limit the moving position of the outer sleeve 20 in its own axial direction.

[0029] Specifically, the outer sleeve 20 is rotatably sleeved on the outside of the load-bearing tube 10 and overlapped with the load-bearing tube 10. The two ends of the load-bearing tube 10 are extended relative to the outer sleeve 20, so that the load-bearing tube 10 can form a favorable support for the outer sleeve 20, and thus can provide a stronger supporting force for the permanent tie rod 40.

[0030] Specifically, although the bearing 30 can limit the axial movement position of the outer sleeve 20, when the external load borne by the outer sleeve 20 is large, the bearing 30 may be damaged. In order to prevent the outer sleeve 20 from falling off from the axial ends of the load-bearing tube 10 due to damage to the bearing 30, in the embodiment of the present application, the load-bearing tube 10 is fixedly provided with a first limiting member 50 on the side wall at one or both ends along its own axial direction. The first limiting member 50 is arranged at the position where the load-bearing tube 10 extends out of the outer sleeve 20. The first limiting member 50 can limit the axial movement position of the outer sleeve 20 to prevent the outer sleeve 20 from falling off from the axial ends of the load-bearing tube 10.

[0031] In this example, the dual protection of the bearing 30 and the first limit member 50 can prevent the outer sleeve 20 from falling off from the axial ends of the load-bearing tube 10, thereby ensuring that the outer sleeve 20 can provide favorable support for the permanent tie rod 40 and achieve smooth installation of the permanent tie rod 40.

[0032] In some embodiments, reference Figure 1 The first limiting member 50 includes a circular limiting plate, and the diameter of the circular limiting plate is larger than the outer diameter of the outer sleeve 20.

[0033] Specifically, the diameter of the circular stopper plate is larger than the outer diameter of the outer sleeve 20, so that the outer sleeve 20 is confined between the two circular stopper plates distributed along the axial direction of the load-bearing tube 10, preventing the outer sleeve 20 from falling off the axial ends of the load-bearing tube 10. It is understood that the two circular stopper plates are relatively distributed outside the two bearings 30, and the two circular stopper plates can be symmetrically distributed on both sides of the load-bearing tube 10, so that the circular stopper plates can easily limit the outer sleeve 20.

[0034] In some embodiments, reference Figure 1 The load-bearing tube 10 is provided with support members on the outside of the side walls at both ends along its own axial direction, and the support members are used to support and fix the load-bearing tube 10.

[0035] Specifically, during the installation of the permanent tie rod 40, the support members support and secure the load-bearing tube 10 by means of a hoisting mechanism, thereby allowing the entire load-bearing device to be suspended in mid-air, facilitating the installation of the permanent tie rod 40. It is understood that the support members can be symmetrically arranged on both sides of the load-bearing tube 10 along its axial direction. The symmetrical arrangement of the support members can ensure a more uniform force distribution on the load-bearing tube 10, thereby preventing bending deformation caused by unilateral force.

[0036] In some embodiments, reference Figure 1 The support member includes a rope presser 60 and a steel wire rope 70.

[0037] Specifically, the rope clamp 60 is connected to the steel wire rope 70, and the steel wire rope 70 can be a longitudinal steel wire rope 70. The rope clamp 60 and the steel wire rope 70 cooperate to fix the load-bearing pipe 10 in the air by hoisting, so that it does not contact the ground or temporary supports, and avoids interfering with the traction path of the permanent tie rod 40. In high-altitude working environments such as crossing rivers and canyons, there is no need to build a large number of temporary support frames, which reduces construction costs and is suitable for complex terrain. In addition, the steel wire rope 70 can apply pre-tension to reduce the shaking of the load-bearing pipe 10 during wind or traction by the permanent tie rod 40. When the traction force of the permanent tie rod 40 is uneven, the support can adjust the force distribution to prevent the load-bearing pipe 10 from twisting or tilting. By adjusting the length of the steel wire rope 70 or the position of the hanging point, it can flexibly adapt to different heights of the bridge arch ribs 90.

[0038] In some embodiments, reference Figure 1 and Figure 2 The load-bearing tube 10 is provided with a second limiting member 80 on the outer side walls of both ends along its own axial direction. The second limiting member 80 is used to limit the axial movement position of the permanent tie rod 40 along the outer sleeve 20.

[0039] Specifically, the second stoppers 80 can be symmetrically distributed along the axial direction of the outer sleeve 20. The second stoppers 80 can be installed near the bearing 30 on the outer sleeve 20, but can also be installed at other locations on the outer sleeve 20 according to actual needs. The permanent tie rod 40 can move between the two second stoppers 80 distributed along the axial direction of the outer sleeve 20. In other words, the second stoppers 80 can limit the range of axial sliding of the permanent tie rod 40 along the outer sleeve 20, preventing it from excessive movement.

[0040] In some embodiments, reference Figure 1 and Figure 2 The second limiting member 80 includes at least two limiting rings 801 arranged concentrically, and two adjacent limiting rings 801 are fixedly connected by a limiting rod 802. The limiting rings 801 are concentrically arranged with the outer sleeve 20.

[0041] Specifically, the second limiting member 80 includes at least two concentrically arranged limiting rings 801. The side wall of the outer sleeve 20 is further provided with limiting rods 802 extending from the side wall of the outer sleeve 20 to the outermost limiting ring 801, and the limiting rods 802 are evenly distributed circumferentially. The embodiment of the present application does not specifically limit the number of limiting rings 801 and the number of limiting rods 802. Those skilled in the art can set them according to actual needs. For example, the number of limiting rings 801 can be 2 to 4, such as 2, 3, 4, etc.; the number of limiting rods 802 can be 3 to 12, such as 3, 4, 5, 6, 8, etc. The limiting rings 801 and the limiting rods 802 are formed of metal materials, such as φ20 round steel welded together.

[0042] Exemplarily, the second limiting member 80 includes two limiting rings 801, namely a first limiting ring and a second limiting ring. The first limiting ring is located inside the second limiting ring, and the diameter of the first limiting ring is larger than the outer diameter of the outer sleeve 20. Through the coordinated action of the first limiting ring, the second limiting ring and the limiting rod 802, a dual axial and radial constraint is formed to ensure that the permanent tie rod 40 is always located between the two second limiting members 80.

[0043] In some embodiments, the load-bearing tube 10 and the outer sleeve 20 are both metal tubes.

[0044] Specifically, the load-bearing pipe 10 is formed of a high-strength metal material to improve the load-bearing capacity of the load-bearing pipe 10; the outer sleeve 20 is formed of a wear-resistant and fatigue-resistant metal material to improve the wear resistance of the outer sleeve 20. For example, the load-bearing pipe 10 and the outer sleeve 20 can be made of steel pipes or the like.

[0045] A second aspect of the present invention provides a method for installing a permanent tie rod, the method being implemented based on the permanent tie rod pulling the river-crossing load bearing device described in any embodiment of the present application, the method comprising: One end of the permanent tie rod 40 is pre-fixed to the starting end of the arch rib 90, and the other end is pulled by the wire rope 70 of the winch; The winch tightens the wire rope 70 to pull the permanent tie rod 40 to move on the outer surface of the outer sleeve 20 along the axial direction perpendicular to the outer sleeve 20, driving the outer sleeve 20 to rotate around the load-bearing pipe 10, so that the permanent tie rod 40 can cross the river.

[0046] Specifically, one end of the permanent tie rod 40 is fixed to one end of the arch rib 90 through a rope reel, and the other end of the permanent tie rod 40 provides traction through the wire rope 70 of the winch to pull the permanent tie rod 40 across the river; During the process of the winch pulling the permanent tie rod 40 across the river, the permanent tie rod 40 is assembled on the outer surface of the outer sleeve 20 of the river-crossing load-bearing device. The winch is started to slowly reel in the rope, and the permanent tie rod 40 slides along the outer sleeve 20 of the load-bearing device. The outer sleeve 20 rotates around the load-bearing pipe 10 as the permanent tie rod 40 moves, reducing friction resistance. After the permanent tie rod 40 reaches the other end of the arch rib 90, it contacts the winch for connection, and the permanent tie rod 40 is tensioned and anchored according to design requirements.

[0047] The installation method of permanent tie rods provided in the embodiment of the present application can quickly complete the conversion between temporary tie rods and permanent tie rods 40 and realize system conversion. The method has a simple structure, convenient processing, fast installation, low cost, and can be used in rotation. It can solve the installation problem of permanent tie rods 40 under complex terrain conditions and construction environments. It has good guiding value for tie arch bridges with the arch-first and beam-later installation sequence, and is particularly suitable for the arch ribs 90 using floating, overall lifting, rotation and other processes, and has high promotion value.

[0048] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to technical solutions formed by a specific combination of the aforementioned technical features. It also encompasses other technical solutions formed by any combination of the aforementioned technical features or their equivalents, without departing from the inventive concept. For example, a technical solution formed by replacing the aforementioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A permanent tie rod traction cross-river load bearing device, characterized in that: include: A load-bearing tube (10), wherein an outer sleeve (20) is provided on the outside of the load-bearing tube (10), the load-bearing tube (10) is rotatably connected to the outer sleeve (20), the outside of the outer sleeve (20) is used to support the permanent tie rod (40), and when the permanent tie rod (40) is pulled and moved along an axial direction perpendicular to the outer sleeve (20), the outer sleeve (20) rotates around the load-bearing tube (10).

2. The permanent tie rod traction river crossing load bearing device according to claim 1 is characterized in that: The load-bearing tube (10) is provided with bearings (30) on the outer side walls of both ends along its own axial direction, and the load-bearing tube (10) is rotatably connected to the outer sleeve (20) via the bearings (30).

3. The permanent tie rod traction river crossing load bearing device according to claim 1 is characterized in that: The length of the load-bearing tube (10) extending along its own axial direction is greater than the length of the outer sleeve (20) extending along its own axial direction; The load-bearing tube (10) is provided with a first limiting member (50) on the outside of at least one end side wall along its own axial direction. The first limiting member (50) is provided at a position where the load-bearing tube (10) exceeds the outer sleeve (20). The first limiting member (50) is used to limit the moving position of the outer sleeve (20) in its own axial direction.

4. The permanent tie rod traction river crossing load bearing device according to claim 3 is characterized in that: The first limiting member (50) comprises a circular limiting plate, the diameter of the circular limiting plate being larger than the outer diameter of the outer sleeve (20).

5. The permanent tie rod traction river crossing load bearing device according to claim 1 is characterized in that: The load-bearing tube (10) is provided with support members on the outside of the side walls at both ends along its own axial direction, and the support members are used to support and fix the load-bearing tube (10).

6. The permanent tie rod traction river crossing load bearing device according to claim 5 is characterized in that: The support member comprises a rope presser (60) and a steel wire rope (70).

7. The permanent tie rod traction river crossing load bearing device according to claim 1 is characterized in that: The load-bearing tube (10) is provided with second limiting members (80) on the outer side walls of both ends along its own axial direction, and the second limiting members (80) are used to limit the axial movement position of the permanent tie rod (40) along the outer sleeve (20).

8. The permanent tie rod traction river crossing load bearing device according to claim 7 is characterized in that: The second limiting member (80) comprises at least two limiting rings (801) arranged concentrically, two adjacent limiting rings (801) are fixedly connected via a limiting rod (802), and the limiting rings (801) are arranged concentrically with the outer sleeve (20).

9. The permanent tie rod traction river crossing load bearing device according to any one of claims 1 to 8, characterized in that: The load-bearing tube (10) and the outer sleeve (20) are both metal tubes.

10. A method for installing a permanent tie rod, characterized in that: The method is implemented based on the permanent tie rod traction river-crossing load bearing device according to any one of claims 1 to 9, and the method comprises: One end of the permanent tie rod (40) is pre-fixed at the starting end of the arch rib (90), and the other end is pulled by the wire rope (70) of the winch; The winch tightens the wire rope (70) to pull the permanent tie rod (40) to move on the outer surface of the outer sleeve (20) along the axial direction perpendicular to the outer sleeve (20), driving the outer sleeve (20) to rotate around the load-bearing pipe (10), thereby enabling the permanent tie rod (40) to cross the river.

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