Temporary damping device for stay cable

Abstract

The utility model provides a temporary damping device for a stay cable. The temporary vibration reduction device for the stay cable comprises a batten plug pad vibration reduction system and a cable end auxiliary cable vibration reduction system. The batten plug pad vibration reduction system comprises a batten, a stay cable sleeve and a protection part, the stay cable sleeve is arranged on the periphery of the stay cable in a sleeving mode, a cavity is formed between the inner wall face of the stay cable sleeve and the outer wall face of the stay cable, the batten is filled in the cavity, and the protection part is at least fixedly arranged at a pipe opening of the stay cable sleeve so that the batten can not be exposed in the air; the cable end auxiliary cable vibration reduction system comprises a flexible sling and a connecting piece, the first end of the flexible sling is wound and fixed to the stay cable, and the second end of the flexible sling is in bolted connection with a preformed hole of a bridge steel guardrail through the connecting piece. According to the temporary damping device for the stay cable, the adverse effect caused by wind vibration on the stay cable in the construction process can be reduced, the wind vibration loss of the stay cable is reduced, and the installation and construction efficiency of the stay cable is improved.

Description

Technical Field

[0001] The present application relates to the technical field of bridge construction, and in particular to a temporary vibration reduction device for a stay cable. Background Art

[0002] With the development of society, transportation is becoming more and more important, and in the development of transportation, the role of bridges is becoming more and more important. Among all bridge types, cable-stayed bridges have been widely recognized for their light and beautiful shape and simple, clear and reasonable force form. They play a vital role in the development of modern bridges. How to do a good job of temporary vibration reduction of the cable during its construction has also become one of our research focuses. Utility Model Content

[0003] The embodiment of the present application provides a temporary vibration reduction device for a cable-stayed cable, which reduces the adverse effects of wind vibration on the cable-stayed cable during construction, reduces wind vibration losses on the cable-stayed cable, and improves the installation and construction efficiency of the cable-stayed cable.

[0004] The embodiment of the present application provides a temporary vibration reduction device for a stay cable, comprising: a wooden square plug pad vibration reduction system and a cable end auxiliary cable vibration reduction system;

[0005] The wood square plugging and vibration reduction system comprises wood square, a cable sleeve and a protective member, wherein the cable sleeve is sleeved on the outer periphery of the cable, a cavity is formed between the inner wall surface of the cable sleeve and the outer wall surface of the cable, the wood square is filled in the cavity, and the protective member is fixedly arranged at least at the pipe opening of the cable sleeve so that the wood square is not exposed to the air;

[0006] The cable end auxiliary cable vibration reduction system includes a flexible sling and a connector. The first end of the flexible sling is wound and fixed on the inclined cable, and the second end of the flexible sling is bolted to the reserved hole of the bridge steel guardrail through the connector.

[0007] In some embodiments, the connecting member includes: a shackle, a turnbuckle, a lifting lug, and a fixing member;

[0008] The shackle is connected to the second end of the flexible sling and the first end of the turnbuckle respectively;

[0009] The second end of the basket bolt is connected to the lifting ear, and the lifting ear is arranged on the fixing piece. The position of the fixing piece corresponds to the position of the reserved hole of the bridge steel guardrail, and the fixing piece is used to fix the basket bolt.

[0010] In some embodiments, the connecting member also includes a connecting bolt, the fixing member is provided with an opening corresponding to the reserved hole of the bridge steel guardrail, and the connecting bolt passes through the opening to enable the lifting ear to be bolted to the reserved hole of the bridge steel guardrail.

[0011] In some embodiments, the cable end auxiliary cable vibration reduction system further includes reinforcing ribs, which are disposed on the fixing member and located around the opening.

[0012] In some embodiments, the fixing member is a steel plate.

[0013] In some embodiments, the protective member is fixedly disposed at the pipe opening of the inclined cable sleeve, and is fixedly disposed on the outer wall surface of the inclined cable sleeve.

[0014] In some embodiments, the protective member is canvas.

[0015] In some embodiments, the inclined cable sleeve is sleeved on the lower end of the inclined cable, and a preset distance is maintained between the upper end of the inclined cable sleeve and the first end of the sling.

[0016] The technical solution provided in the embodiments of the present application has at least the following beneficial effects:

[0017] The temporary vibration reduction device for the inclined cable provided in the embodiment of the present application comprises a wood pad vibration reduction system and a cable end auxiliary cable vibration reduction system, wherein: the wood pad vibration reduction system comprises wood, an inclined cable casing and a protective member, and the setting of the protective member can prevent the wood from being exposed to the air, so that the wood is not exposed to rain and sun, the service life of the wood is increased, and the possibility of loosening of the wood is greatly reduced; the cable end auxiliary cable vibration reduction system comprises a flexible sling and a connecting member; the temporary vibration reduction device for the inclined cable provided in the embodiment of the present application adopts a flexible sling as the cable end auxiliary cable, replacing the rigid auxiliary cable in the related technology, which greatly reduces the damage of the cable end auxiliary cable to the inclined cable protection tube during the vibration reduction process, and the temporary vibration reduction device for the inclined cable provided in the embodiment of the present application is jointly borne by the cable end auxiliary cable and the wood pad vibration reduction system to bear the influence of wind vibration. Compared with the method of plugging a wooden block with a single cable end auxiliary cable or a cable casing, the temporary vibration reduction device for the inclined cable in the embodiment of the present application is significantly reduced in the force borne at the connection point and the cable casing position, which greatly reduces the influence of wind vibration.

[0018] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0020] Figure 1 A schematic structural diagram of a temporary vibration reduction device for a stay cable provided in an embodiment of the present application.

[0021] Reference numerals:

[0022] 11-wooden square pad vibration reduction system; 12-cable end auxiliary cable vibration reduction system; 111-wooden square; 112-slant cable casing; 113-protective part; 114-slant cable; 121-flexible sling; 122-connecting part;

[0023] 1221-shackle; 1222-basket bolt; 1223-lifting ear; 1224-fixing piece; 1225-connecting bolt. DETAILED DESCRIPTION

[0024] The present application is described in detail below, and examples of embodiments of the present application are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions. In addition, if the detailed description of the known technology is unnecessary for the features of the present application shown, it will be omitted. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be interpreted as limiting the present application.

[0025] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as generally understood by those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0026] It will be understood by those skilled in the art that, unless expressly stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be an intermediate element. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0027] The cables of long-span cable-stayed bridges have a large slenderness ratio, so their natural frequency and modal damping ratio are very low. In addition, the bridge is located in a harsh marine environment and is greatly affected by the windy marine environment, which has a great impact on the construction. Therefore, studying how to reduce the impact of cable vibration on construction has become one of the problems that the highway construction industry must face. At present, during the construction of the cable-stayed cable in the relevant technology, rigid cable end auxiliary cables or cable sleeves with wooden pads are often used to suppress vibration.

[0028] However, the vibration suppression method of rigid cable end auxiliary cable and cable sleeve plus wooden pad used in the current related technology has the following disadvantages: First, the rigid cable end auxiliary cable is easy to damage the main cable protection tube at the connection; specifically, because the auxiliary cable is a rigid structure, the connection needs to bear a large force during vibration reduction, which is easy to damage the main cable protection tube at the connection. Second, the vibration suppression method of cable sleeve plus wooden pad is prone to the problem of loosening of wooden pad, thus losing the vibration suppression effect; specifically, as the vibration frequency of the inclined cable increases and the cable amplitude increases, the wooden pad is prone to loosening, resulting in the loss of vibration suppression effect.

[0029] In view of the above-mentioned problems existing in the related technology, the embodiments of the present application provide a new temporary vibration reduction device for inclined cables, which includes a wooden plug pad vibration reduction system and a cable end auxiliary cable vibration reduction system. The wooden plug pad vibration reduction system and the cable end auxiliary cable vibration reduction system jointly bear the impact of wind vibration. Compared with the single cable end auxiliary cable vibration reduction or the single inclined cable casing plug pad wooden block vibration reduction, the force at the connection point and the inclined cable casing position is significantly reduced, thereby minimizing the impact of wind vibration during construction.

[0030] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0031] The present application provides a temporary vibration reduction device for a stay cable, such as Figure 1 As shown, it includes: a timber pad vibration reduction system 11 and a cable end auxiliary cable vibration reduction system 12; the timber pad vibration reduction system 11 includes a timber 111, a cable sleeve 112 and a protective member 113, the cable sleeve 112 is sleeved on the outer periphery of the cable 114, a cavity is formed between the inner wall surface of the cable sleeve 112 and the outer wall surface of the cable 114, the timber 111 is filled in the cavity, and the protective member 113 is fixed at least at the pipe mouth of the cable sleeve 112 so that the timber 111 is not exposed to the air; the cable end auxiliary cable vibration reduction system 12 includes a flexible sling 121 and a connecting member 122, the first end of the flexible sling 121 is wound and fixed on the cable 114, and the second end of the flexible sling 121 is bolted to the reserved hole of the bridge steel guardrail through the connecting member 122.

[0032] It should be noted that Figure 1 The dotted line in the figure represents the bridge deck, and one end of the inclined cable 114 is fixed on the bridge deck.

[0033] It should be noted that the size of the cavity formed between the inner wall surface of the inclined cable sleeve 112 and the outer wall surface of the inclined cable 114 is set according to actual construction requirements.

[0034] The temporary vibration reduction device for the inclined cable provided in the embodiment of the present application includes a wood pad vibration reduction system 11 and a cable end auxiliary cable vibration reduction system 12, wherein: the wood pad vibration reduction system 11 includes a wood 111, an inclined cable sleeve 112 and a protective member 113, and the setting of the protective member 113 can prevent the wood 111 from being exposed to the air, so that the wood 111 is not exposed to rain and sun, thereby increasing the service life of the wood 111 and greatly reducing the possibility of loosening of the wood 111; the cable end auxiliary cable vibration reduction system 12 includes a flexible sling 121 and a connector 122; the embodiment of the present application The temporary vibration reduction device for the inclined cable provided adopts a flexible sling 121 as an auxiliary cable at the cable end, replacing the rigid auxiliary cable in the related technology, which greatly reduces the damage of the cable end auxiliary cable to the inclined cable protection tube during the vibration reduction process. In addition, the temporary vibration reduction device for the inclined cable provided in the embodiment of the present application is composed of the cable end auxiliary cable and the wooden square pad vibration reduction system 11 to jointly bear the impact of wind vibration. Compared with the method of a single cable end auxiliary cable or a cable sleeve pad with a wooden block, the temporary vibration reduction device for the inclined cable in the embodiment of the present application is significantly reduced in the force borne at the connection point and the cable sleeve position, thereby greatly reducing the impact of wind vibration.

[0035] In an optional embodiment, if Figure 1 As shown, the connecting member 122 in the embodiment of the present application includes: a shackle 1221, a basket bolt 1222, a lifting ear 1223 and a fixing member 1224; the shackle 1221 is respectively connected to the second end of the flexible sling 121 and the first end of the basket bolt 1222; the second end of the basket bolt 1222 is connected to the lifting ear 1223, and the lifting ear 1223 is arranged on the fixing member 1224. The position of the fixing member 1224 corresponds to the position of the reserved hole of the bridge steel guardrail, and the fixing member 1224 is used to fix the basket bolt 1222.

[0036] It should be noted that the shackle 1221 is a connecting piece that can be used to lift and transport materials by means of fixing methods such as rotating bolts. The shackle 1221 has different types and uses, including D-type shackles, bow-shaped shackles, U-shaped shackles, etc., among which the D-type shackle is one of the most commonly used shackles. The shackle body is forged and heat-treated from high-quality carbon structural steel or alloy structural steel, and is small in size and high in strength. The shackle 1221 can be used as the end fitting of the rigging, and is directly connected to the hoisted object during the lifting operation. The shackle 1221 can be used between the rigging and the end fitting to play a connecting role. The shackle 1221 in the embodiment of the present application has a certain movable space and can serve as a transition connection structure between the soft flexible sling 121 and the hard basket bolt 1222.

[0037] It should be noted that the flower basket bolt 1222 is retracted and retracted by a lead screw, and can adjust the tightness of the rope. It can be used to bundle components during component transportation and loosened during installation and correction. The flower basket bolt 1222 is composed of an adjustment rod with left-handed and right-handed threads, a nut and a pull rod. The adjustment rod is also fixed with an anti-theft and anti-loosening device composed of a cover plate, a fixing plate, and a guide plate connected into one by anti-theft and anti-loosening bolts. When in use, a special matching sleeve must be used to unscrew the anti-theft and anti-loosening bolt, which has a good anti-theft effect and is safe and reliable. After the anti-theft and anti-loosening device is disassembled, it does not need to be taken down. The ring guide plate on it can be used to slide along the pull rod, and it can be adjusted and operated by moving a distance. Therefore, it is easy to use, has a simple structure, is easy to process, has low cost, and is highly practical. The embodiment of the present application uses the flower basket bolt 1222 to tighten the auxiliary rope at the rope end.

[0038] It should be noted that the lifting lug 1223 serves as another fixing point for the basket bolt 1222; the bridge steel guardrail generally does not have a special position for fixing the basket bolt 1222, so it is necessary to set a fixing piece 1224 near the bridge steel guardrail as a fixing point.

[0039] In a specific embodiment, Figure 1 As shown, the connecting member 122 in the embodiment of the present application also includes a connecting bolt 1225, and the fixing member 1224 is provided with an opening corresponding to the reserved hole of the bridge steel guardrail. The connecting bolt 1225 passes through the opening so that the lifting ear 1223 is bolted to the reserved hole of the bridge steel guardrail.

[0040] In a specific embodiment, Figure 1 As shown, the cable end auxiliary cable vibration reduction system 12 in the embodiment of the present application further includes reinforcing ribs (not shown in the figure), which are arranged on the fixing member 1224 and located around the opening of the fixing member 1224.

[0041] During specific implementation, the provision of the reinforcing ribs can enable the fixing member 1224 to bear weight better and can strengthen the structure of the fixing member 1224 after the opening.

[0042] In an optional embodiment, the fixing member 1224 in the embodiment of the present application is a steel plate.

[0043] It should be noted that the setting of the steel plate not only plays a good fixing role, but also has little effect on the steel plate from rain and sun exposure, that is, environmental factors will not cause the steel plate to deform, thereby playing a good fixing role.

[0044] In a specific embodiment, Figure 1 As shown, the protective member 113 is fixedly arranged at the pipe opening of the inclined cable sleeve 112 and fixedly arranged on the outer wall surface of the inclined cable sleeve 112 .

[0045] In specific implementation, the protective member 113 is fixedly arranged on the pipe mouth of the inclined cable sleeve 112, and is also fixedly arranged on the outer wall surface of the inclined cable sleeve 112. This arrangement can better protect the wooden planks 111 from rain and sun exposure, and can also protect the inclined cable sleeve 112, thereby increasing the service life of the inclined cable sleeve 112 and the wooden planks 111.

[0046] In a specific embodiment, the protection member 113 is canvas.

[0047] In specific implementation, canvas is used to protect the wood 111 from rain and sun exposure, which is easier to achieve in actual construction, and the material of the canvas is also easier to obtain, and the wood 111 can be well protected without increasing the production cost.

[0048] In a specific embodiment, Figure 1 As shown, the inclined cable sleeve 112 is sleeved on the lower end of the inclined cable 114 , and a preset distance is maintained between the upper end of the inclined cable sleeve 112 and the first end of the sling 121 .

[0049] During specific implementation, the specific position of the inclined cable sleeve 112 on the inclined cable 114 and the size of the inclined cable 114 are set according to actual construction needs; the preset distance between the upper end of the inclined cable sleeve 112 and the first end of the sling 121 is also set according to actual construction needs.

[0050] It should be noted that the fixing position of the flexible sling 121 on the inclined cable 114 is set according to actual construction needs, and the position setting needs to ensure that it can play a vibration reduction role.

[0051] The method of using the temporary shock-absorbing device for the inclined cable in the embodiment of the present application is as follows: the first step is to pad the wooden square 111 and wrap it with canvas. During the padding process, attention should be paid to the firmness of the padding; the second step is to wrap the flexible sling 121 around and fix it on the inclined cable 114. The end of the flexible sling 121 is bolted to the reserved hole of the bridge steel guardrail by using a shackle 1221, a basket bolt 1222, a lifting ear 1223 and a fixing part 1224 (steel plate); the third step is to tighten the auxiliary cable at the cable end by using the basket bolt 1222.

[0052] In summary, by applying the embodiments of the present application, at least the following beneficial effects can be achieved:

[0053] The temporary vibration reduction device for the inclined cable provided in the embodiment of the present application comprises a wood pad vibration reduction system and a cable end auxiliary cable vibration reduction system, wherein: the wood pad vibration reduction system comprises wood, an inclined cable casing and a protective member, and the setting of the protective member can prevent the wood from being exposed to the air, so that the wood is not exposed to rain and sun, the service life of the wood is increased, and the possibility of loosening of the wood is greatly reduced; the cable end auxiliary cable vibration reduction system comprises a flexible sling and a connecting member; the temporary vibration reduction device for the inclined cable provided in the embodiment of the present application adopts a flexible sling as the cable end auxiliary cable, replacing the rigid auxiliary cable in the related technology, which greatly reduces the damage of the cable end auxiliary cable to the inclined cable protection tube during the vibration reduction process, and the temporary vibration reduction device for the inclined cable provided in the embodiment of the present application is jointly borne by the cable end auxiliary cable and the wood pad vibration reduction system to bear the influence of wind vibration. Compared with the method of plugging a wooden block with a single cable end auxiliary cable or a cable casing, the temporary vibration reduction device for the inclined cable in the embodiment of the present application is significantly reduced in the force borne at the connection point and the cable casing position, which greatly reduces the influence of wind vibration.

[0054] Those skilled in the art will appreciate that the various operations, methods, steps, measures, and schemes in the processes discussed in this application may be alternated, altered, combined, or deleted. Further, other steps, measures, and schemes in the various operations, methods, and processes discussed in this application may also be alternated, altered, rearranged, decomposed, combined, or deleted. Further, the steps, measures, and schemes in the prior art that are similar to those disclosed in this application may also be alternated, altered, rearranged, decomposed, combined, or deleted.

[0055] In the description of the present application, the directions or positional relationships indicated by words such as "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the exemplary directions or positional relationships shown in the accompanying drawings. They are for the convenience of describing or simplifying the description of the embodiments of the present application, and do not indicate or imply that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0056] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0057] The above description is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A temporary vibration reduction device for a stay cable, characterized in that: include: Wooden square plug pad vibration reduction system and cable end auxiliary cable vibration reduction system; The wood square plugging and vibration reduction system comprises wood square, a cable sleeve and a protective member, wherein the cable sleeve is sleeved on the outer periphery of the cable, a cavity is formed between the inner wall surface of the cable sleeve and the outer wall surface of the cable, the wood square is filled in the cavity, and the protective member is fixedly arranged at least at the pipe opening of the cable sleeve so that the wood square is not exposed to the air; The cable end auxiliary cable vibration reduction system includes a flexible sling and a connector. The first end of the flexible sling is wound and fixed on the inclined cable, and the second end of the flexible sling is bolted to the reserved hole of the bridge steel guardrail through the connector.

2. The temporary vibration reduction device for the stayed cable according to claim 1, characterized in that: The connecting parts include: shackles, turnbuckles, lifting ears and fixing parts; The shackle is connected to the second end of the flexible sling and the first end of the turnbuckle respectively; The second end of the basket bolt is connected to the lifting ear, and the lifting ear is arranged on the fixing piece. The position of the fixing piece corresponds to the position of the reserved hole of the bridge steel guardrail, and the fixing piece is used to fix the basket bolt.

3. The temporary vibration reduction device for the stayed cable according to claim 2, characterized in that: The connecting member also includes a connecting bolt, and the fixing member is provided with an opening corresponding to the reserved hole of the bridge steel guardrail. The connecting bolt passes through the opening so that the lifting ear is bolted to the reserved hole of the bridge steel guardrail.

4. The temporary vibration reduction device for the stayed cable according to claim 3 is characterized in that: The cable end auxiliary cable vibration reduction system also includes reinforcing ribs, which are arranged on the fixing member and located around the opening.

5. The temporary vibration reduction device for the inclined cable according to any one of claims 2 to 4, characterized in that: The fixing piece is a steel plate.

6. The temporary vibration reduction device for the stayed cable according to claim 1, characterized in that: The protective member is fixedly arranged at the pipe opening of the inclined cable sleeve and is fixedly arranged on the outer wall surface of the inclined cable sleeve.

7. The temporary vibration reduction device for the stayed cable according to claim 6, characterized in that: The protective member is canvas.

8. The temporary vibration reduction device for the stayed cable according to claim 6, characterized in that: The inclined cable sleeve is sleeved on the lower end of the inclined cable, and a preset distance is maintained between the upper end of the inclined cable sleeve and the first end of the sling.

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