Cable wind resistance and vibration suppression device for suspension bridge construction

Abstract

The utility model discloses a cable wind resistance and vibration suppression device for suspension bridge construction, and relates to the technical field of bridge construction wind resistance, the vibration suppression device is installed on a connecting beam of a catwalk system, the connecting beam is installed on a catwalk bearing cable in the catwalk system, and the cable wind resistance and vibration suppression device comprises a frame; the multiple vibration suppression assemblies are arranged in the square through hole of the frame, the multiple vibration suppression assemblies are distributed in an annular array, the ends, away from each other, of the multiple vibration suppression assemblies are connected with the inner wall of the square through hole of the frame, and the vibration suppression assemblies are used for conducting wind resistance and vibration suppression on cables; and a lock clamp. According to the utility model, the frame is firstly fixed, and then the plurality of vibration suppression assemblies are utilized to carry out wind resistance and vibration suppression on the cable in the lock clamp, so that the cable can be effectively ensured to be stably mounted. The defect that in the prior art, deflection vibration is caused by the fact that the pre-deflection cable is prone to being affected by strong wind and heavy rain is effectively overcome. And collision interference with an existing erected catwalk can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of wind resistance technology in bridge construction, and in particular to a cable-stayed bridge construction wind-resistant and vibration-damping device. Background Technology

[0002] After the steel truss girder of the suspension bridge begins to be hoisted, the dead load in the mid-span gradually increases, causing the tower to shift towards the mid-span and generate a large eccentric bending moment. Therefore, it is necessary to pre-shift the main cable saddle towards the side span. Since the main tower of the suspension bridge currently consists of a steel tower, taking advantage of the relatively flexible stiffness of the steel tower, pre-tensioning of the steel tower is considered to reduce the pre-shifting amount of the main cable saddle. At this time, precast cables can be used as pre-shifting cables to pre-shift the main tower towards the side span.

[0003] However, in actual use, the pre-deflecting cable is affected by strong winds and heavy rains, causing it to deflect and vibrate. It is prone to collisions and conflicts with existing facilities (such as catwalk systems), thus affecting construction safety. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies where pre-deflection cables are easily affected by strong winds and heavy rains, causing deflection vibrations. This invention proposes a wind-resistant and vibration-damping device for suspension bridge construction cables.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a wind-resistant and vibration-damping device for cable-stayed bridge construction. The vibration-damping device is installed on the connecting beam of the catwalk system, and the connecting beam is installed on the catwalk load-bearing cable in the catwalk system. The device includes:

[0007] A frame, the interior of which is provided with a square through hole;

[0008] Multiple vibration damping components are disposed in the square through holes of the frame. The multiple vibration damping components are arranged in a ring array. The ends of the multiple vibration damping components that are far apart from each other are respectively connected to the inner wall of the square through holes of the frame. The vibration damping components are used to resist wind and damping of the cable.

[0009] The locking clip is disposed inside the square through hole of the frame. The locking clip is sleeve-shaped, and the outside of the locking clip is connected to the close ends of the plurality of vibration damping components.

[0010] The cable is installed inside the locking clamp.

[0011] In some feasible solutions, the vibration damping component includes:

[0012] A first connector is disposed on the outside of the locking clamp and is connected to the outside of the locking clamp;

[0013] A vibration damping spring, one end of which is connected to the locking clamp via the first connector;

[0014] The hinge has one end fixedly disposed on the inner wall of the square through hole of the frame, and the other end of the hinge is connected to the other end of the vibration damping spring. The hinge is used to cooperate with the vibration damping spring to perform multi-directional wind resistance and vibration damping.

[0015] In some feasible solutions, the hinge portion includes:

[0016] The second connecting rod has one end connected to the square through hole of the frame, and the other end of the second connecting rod is provided with a second connector, which is in the shape of a spherical groove.

[0017] The first connecting rod has one end connected to the damping spring away from the locking clamp, and the other end of the first connecting rod is spherical. The first connecting rod is hinged to the spherical groove of the second connecting head through the spherical end.

[0018] In some feasible solutions, the second connecting rod and the second connecting head are integrally formed.

[0019] In some feasible solutions, the vibration damping spring and the second connecting rod are integrally formed.

[0020] In some feasible solutions, the vibration damping device further includes:

[0021] A sleeve, which is fitted over the outside of the damping spring.

[0022] In some feasible solutions, the sleeve is a double-layered stainless steel sleeve.

[0023] In some feasible solutions, the inner layer of the sleeve is coated with PTFE, and the double-layer stainless steel sleeve of the sleeve is filled with nitrogen.

[0024] The beneficial effects of this utility model are as follows:

[0025] This invention first fixes the frame, then uses multiple vibration damping components to wind-resistant and vibration-dampingly protect the cable within the locking clamp, effectively ensuring stable installation. This effectively solves the problem of existing technologies where pre-deflecting cables are easily affected by strong winds and heavy rain, causing deflection and vibration. Furthermore, it avoids collisions and interference with existing catwalks. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall use of a cable-stayed bridge construction wind-resistant and vibration-damping device provided in this embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of the overall structure of a cable-stayed bridge construction wind-resistant and vibration-damping device provided in this embodiment of the utility model;

[0028] Figure 3 This is a schematic diagram of a vibration damping component in a suspension bridge construction cable wind-resistant and vibration-damping device provided in an embodiment of the present utility model.

[0029] The markings in the diagram are as follows:

[0030] 1. Framework;

[0031] 2. Cables;

[0032] 3. Locking clip;

[0033] 4. Vibration damping assembly; 41. First connector; 42. Vibration damping spring; 43. First connecting rod; 44. Second connecting rod; 441. Second connector. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0038] Reference Figures 1 to 3 In this embodiment, to address the shortcomings of existing technologies where pre-deflection cables are easily affected by strong winds and heavy rains, causing deflection vibrations, this utility model provides a wind-resistant and vibration-damping device for suspension bridge construction cables. The vibration-damping device is installed on the connecting beam 5. By installing the vibration-damping device on the connecting beam 5, the position of the pre-deflection cable is limited and fixed, preventing collisions and interference between the pre-deflection cable and existing structures (such as the catwalk system 6, connecting beam 5, etc.). Simultaneously, the vibration-damping device provides wind-resistant and vibration-damping protection for the pre-deflection cable. (Refer to...) Figure 1 The vibration damping device is installed on the connecting beam 5 of the catwalk system, and the connecting beam 5 is installed on the catwalk load-bearing cable. The vibration damping device limits the pre-deflection cable to the connecting beam 5 in the catwalk system, fixing the relative position of the pre-deflection cable to the catwalk system and preventing collisions between the pre-deflection cable and existing structures in the catwalk system. Specifically, the vibration damping device includes: a frame 1, a locking clamp 3, and multiple vibration damping components 4. The frame 1 is square, and its interior has square through holes. The frame 1 can be fixedly connected to the construction bridge deck. Multiple vibration damping components 4 are disposed within the square through holes of the frame 1, arranged in a circular array. The ends of the multiple vibration damping components that are furthest from each other are connected to the inner wall of the square through holes of the frame 1. The vibration damping components 4 are used to resist wind and vibration of the cable 2. The locking clip 3 is disposed inside the square through hole of the frame 1. The locking clip 3 is sleeve-shaped, and its exterior is connected to the adjacent ends of the plurality of vibration damping components 4. The cable 2 is inserted inside the locking clip 3. That is, in this embodiment, the frame 1 is first fixed, and then the cable 2 inside the locking clip 3 is used to resist wind and vibration by the plurality of vibration damping components 4, effectively ensuring that the cable 2 can be installed stably. This effectively solves the shortcomings of the prior art where the pre-deflection cable is easily affected by strong winds and heavy rain, causing deflection vibration. It also avoids collision and interference with the existing catwalk.

[0039] In this embodiment, to facilitate understanding of how the vibration damping component 4 is used to dampen the cable 2 inside the clamp 3, and for ease of description, an example of the vibration damping component 4 is provided. Specifically, the vibration damping component 4 includes: a first connector 41, a vibration damping spring 42, and a hinge. The first connector 41 is disposed on the outside of the clamp 3 and is hingedly connected to the outside of the clamp 3. One end of the vibration damping spring 42 is connected to the first connector 41, that is, one end of the vibration damping spring 42 is connected to the clamp 3 through the first connector 41. One end of the hinge is fixedly disposed on the inner wall of the square through hole of the frame 1, and the other end of the hinge is connected to the other end of the vibration damping spring 42. The hinge is used to cooperate with the vibration damping spring 42 to perform multi-directional wind damping, so as to ensure that winds blowing from different directions can be damped by the vibration damping spring 42.

[0040] Reference Figure 2 In this embodiment, the hinged part includes a first connecting rod 43 and a second connecting rod 44. One end of the second connecting rod 44 is connected to the square through hole of the frame 1, and the other end of the second connecting rod 44 is provided with a second connecting head 441, which is shaped like a spherical groove. One end of the first connecting rod 43 is connected to the vibration damping spring 42 away from the locking clip 3, and the other end of the first connecting rod 43 is spherical. The first connecting rod 43 is hinged to the spherical groove of the second connecting head 441 through the spherical end. That is, in this embodiment, the vibration damping spring 42 is hinged to the spherical groove of the second connecting rod 44 through the spherical end of the first connecting rod 43, so as to realize that the vibration damping spring 42 can be used to resist wind and damping from different directions. In this embodiment, in order to ensure the wind resistance and vibration damping effect, the second connecting rod 44 and the second connecting head 441 are integrally formed, and the vibration damping spring 42 and the second connecting rod 44 are integrally formed.

[0041] In one feasible embodiment, to ensure the lifespan of the vibration damping spring 42 under different weather conditions, the vibration damping device further includes a sleeve (not shown in the figure), which is fitted over the outside of the vibration damping spring 42. Preferably, the sleeve is a double-layer stainless steel sleeve, the inner layer of which is coated with PTFE, and the double-layer stainless steel sleeve is filled with nitrogen. This protects the performance of the vibration damping spring 42 and also makes it moisture-proof and salt spray-resistant, effectively extending its service life.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A wind-resistant and vibration-damping device for cable-stayed bridge construction, wherein the vibration-damping device is installed on the connecting beam of the catwalk system, and the connecting beam is installed on the catwalk load-bearing cable of the catwalk system, characterized in that, include: A frame, which is mounted on the connecting beam, has a square through hole inside the frame; Multiple vibration damping components are disposed in the square through holes of the frame. The multiple vibration damping components are arranged in a ring array. The ends of the multiple vibration damping components that are far apart from each other are respectively connected to the inner wall of the square through holes of the frame. The vibration damping components are used to resist wind and damping of the cable. The locking clip is disposed inside the square through hole of the frame. The locking clip is sleeve-shaped, and the outside of the locking clip is connected to the close ends of the plurality of vibration damping components. The cable is installed inside the locking clamp.

2. The suspension bridge construction cable wind-resistant and vibration-damping device according to claim 1, characterized in that, The vibration damping component includes: A first connector is disposed on the outside of the locking clamp and is connected to the outside of the locking clamp; A vibration damping spring, one end of which is connected to the locking clamp via the first connector; The hinge has one end fixedly disposed on the inner wall of the square through hole of the frame, and the other end of the hinge is connected to the other end of the vibration damping spring. The hinge is used to cooperate with the vibration damping spring to perform multi-directional wind resistance and vibration damping.

3. The cable-stayed anti-wind and vibration damping device for suspension bridge construction according to claim 2, characterized in that, The hinge portion includes: The second connecting rod has one end connected to the square through hole of the frame, and the other end of the second connecting rod is provided with a second connector, which is in the shape of a spherical groove. The first connecting rod has one end connected to the damping spring away from the locking clamp, and the other end of the first connecting rod is spherical. The first connecting rod is hinged to the spherical groove of the second connecting head through the spherical end.

4. The cable-stayed anti-wind and vibration damping device for suspension bridge construction according to claim 3, characterized in that, The second connecting rod and the second connecting head are integrally formed.

5. A suspension bridge construction cable wind-resistant and vibration-damping device according to claim 3, characterized in that, The vibration damping spring and the second connecting rod are integrally formed.

6. A suspension bridge construction cable wind-resistant and vibration-damping device according to any one of claims 2 to 5, characterized in that, The vibration damping device also includes: A sleeve, which is fitted over the outside of the damping spring.

7. A cable-stayed bridge construction wind-resistant and vibration-damping device according to claim 6, characterized in that, The sleeve is a double-layer stainless steel sleeve.

8. A suspension bridge construction cable wind-resistant and vibration-damping device according to claim 7, characterized in that, The inner layer of the sleeve is coated with PTFE, and the double-layer stainless steel sleeve of the sleeve is filled with nitrogen.

Images