CN218175565U

CN218175565U - Temporary damper for stay cable of cable-stayed bridge

Info

Publication number: CN218175565U
Application number: CN202222399795.0U
Authority: CN
Inventors: 杜松; 周范武; 吕双江; 于得安; 胡曦鹏; 余玉云; 刘鹏; 王亚军
Original assignee: CCCC Second Harbor Engineering Co
Current assignee: CCCC Second Harbor Engineering Co
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2022-12-30
Anticipated expiration: 2032-09-09

Abstract

The utility model provides a temporary damper for cable-stay bridge suspension cable, telescopic damper includes adjusting screw and sleeve pipe, the adjusting screw cover is established at the intraductal portion of cover, sleeve pipe one end is equipped with adjusting nut, adjusting nut and adjusting screw threaded connection, adjusting nut rotates with the sleeve pipe tip to be connected, the sleeve pipe other end is equipped with the attenuator head, the attenuator head is articulated with the sleeve pipe tip, the attenuator head is used for leaning on the suspension cable, the adjusting screw tip is equipped with the attenuator base, the attenuator base is used for setting up on the concrete beam. For this interim attenuator of cable pipe stopper wedge square timber's damping mode structural stability is good, the material is sturdy and durable, should not damage, and attenuator arc design more laminates the suspension cable, and built-in rubber skin is effectual to the protection of suspension cable.

Description

Temporary damper for stay cable of cable-stayed bridge

Technical Field

The utility model belongs to the technical field of cable-stay bridge construction technique and specifically relates to a temporary damper for cable-stay bridge suspension cable is related to.

Background

The stress of a beam body is borne by a stay cable of the super-huge type cable-stayed bridge, when a cable-stayed bridge structural system is unstable and the linearity of the cable-stayed bridge is uncertain, a permanent damper is generally out of reach or cannot be installed, at the moment, the temporary damper is generally adopted to reduce the shaking of the stay cable in strong wind weather and in an unfixed load state, and the permanent damper is installed when the super-huge type cable-stayed bridge structural system is stable and linearly stable and the tension of the stay cable is not required to be adjusted. If the problem of shaking of the cable-stayed bridge caused by strong wind weather and unfixed impact load in the construction process cannot be effectively solved, on one hand, the bridge crane can be hoisted to bring great potential safety hazard, and on the other hand, the precision of necessary measurement placement in the construction process of the super-large bridge can be seriously influenced.

In order to reduce the shaking of the stay cable of the cable-stayed bridge in the construction process, the conventional scheme generally fills the wedge-shaped wood block in the cable guide pipe to achieve the damping effect of the stay cable, the damping effect of the scheme is poor, and the rubber of the outer package of the stay cable is damaged to a certain extent.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a temporary damper for cable-stay bridge suspension cable solves the damping effect that generally fills in the wedge billet at the cable pipe and reaches the suspension cable, and this scheme effect damping effect is relatively poor, also has the problem of certain damage to suspension cable extranal packing rubber.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the utility model provides a temporary damper for cable-stay bridge suspension cable, telescopic damper includes adjusting screw and sleeve pipe, the adjusting screw cover is established at the intraduct, sleeve pipe one end is equipped with adjusting nut, adjusting nut and adjusting screw threaded connection, adjusting nut rotates with the sleeve pipe tip to be connected, the sleeve pipe other end is equipped with the attenuator head, the attenuator head is articulated with the sleeve pipe tip, the attenuator head is used for leaning on the suspension cable, adjusting screw tip is equipped with the attenuator base, the attenuator base is used for setting up on concrete beam.

In the preferred scheme, the upper surface of the adjusting nut is provided with a limiting table, the end part of the sleeve is provided with a convex ring, and the limiting table is sleeved on the convex ring.

In the preferred scheme, be equipped with a plurality of balls between spacing platform and the sleeve pipe terminal surface.

In a preferable scheme, a base plate or a snap ring is arranged on the end face of the damper head.

In a preferred scheme, the material of the backing plate is rubber or nylon.

In the preferred scheme, the structure of snap ring is semicircle ring structure, and the material of snap ring is rubber, perhaps is nylon.

In the preferred scheme, the snap ring is internally provided with a bone sleeve, the lower part of the snap ring is provided with an installation block, the installation block penetrates through the snap ring to be connected with the bone sleeve, and the installation block is arranged in a fixing hole of the damper head.

In the preferred scheme, the lower surface of the damper head is provided with a locking nut, and the locking nut penetrates through the damper head and is in threaded connection with the mounting block.

In the preferred scheme, a plurality of mounting claws are further arranged on two sides of the clamping ring, the mounting claws are connected with the damper head through elastic mounting pieces, U-shaped hook body structures are arranged at the end parts of the elastic mounting pieces, and the U-shaped hook body structures are connected with the mounting claws.

In a preferable scheme, an adjusting inclined strut is arranged between the damper head and the telescopic damper.

The utility model provides a temporary damper for cable-stay bridge suspension cable adopts base, adjustable screw, attenuator head and to form a triangle atress support system between the suspension cable and reaches the damping effect. This device is the dismantlable formula, and is flexible, and economy can effectually avoid rocking because bad weather and the stay cable that unfixed live load leads to with this interim attenuator in the work progress, reduces the vibration of bridge floor, avoids the potential safety hazard in the bridge floor crane hoist and mount operation on the one hand, and on the other hand can be very big improvement in the measurement accuracy of putting of work progress. For this interim attenuator of cable pipe stopper wedge square timber's damping mode structural stability is good, the material is sturdy and durable, should not damage, and attenuator arc design more laminates the suspension cable, and built-in rubber skin is effectual to the protection of suspension cable.

Drawings

The invention will be further explained with reference to the following figures and examples:

FIG. 1 is a general installation structure diagram of the present invention;

FIG. 2 is a view of the mounting structure of the adjusting nut of the present invention;

fig. 3 is a view of the installation structure of the snap ring of the present invention.

In the figure: a concrete beam 1; a base fixing bolt 2; a damper base 3; a telescopic damper 4; an adjusting screw 401; a sleeve 402; an adjusting nut 5; a ball 501; a stop block 502; adjusting the inclined strut 6; a damper head 7; a fixing hole 701; a backing plate 8; a stay cable 9; a cable guide 10; an anchor head 11; a stay cable anchoring cap 12; a bone sleeve 13; a mounting block 14; a lock nut 15; an elastic mounting piece 16; a mounting claw 17; a snap ring 18.

Detailed Description

As shown in fig. 1 to 3, a temporary damper for a stay cable of a cable-stayed bridge, wherein a telescopic damper 4 comprises an adjusting screw 401 and a sleeve 402, the adjusting screw 401 is sleeved inside the sleeve 402, an adjusting nut 5 is arranged at one end of the sleeve 402, the adjusting nut 5 is in threaded connection with the adjusting screw 401, the adjusting nut 5 is rotatably connected with the end of the sleeve 402, a damper head 7 is arranged at the other end of the sleeve 402, the damper head 7 is hinged with the end of the sleeve 402, the damper head 7 is used for abutting against a stay cable 9, a damper base 3 is arranged at the end of the adjusting screw 401, and the damper base 3 is used for being arranged on a concrete beam 1. The end surface of the damper head 7 is provided with a backing plate 8 or a snap ring. The damper base 3 is a 0.5m0.5m0.1m square base plate welded by adopting section steel, the square base plate is temporarily bolted with a concrete beam through a fixing bolt so as to realize the fixed anti-slip effect in the working state, and the base plate can be moved by removing the bolting during the disassembly.

The bottom end of the telescopic damper 4 is fixedly connected with the damper base 3, the top end of the telescopic damper is hinged with the damper head 7, and the length adjusting function is achieved through the middle screw rod adjusting nut. The temporary damper can be structurally stable to achieve the stress effect through length adjustment.

The damper head 7 is made of 16-shaped steel with a long groove of 0.8m, and the damper head 7 with the length of 0.8m is designed to better increase the contact area and achieve a better damping effect. The arc-shaped steel plate is welded in the groove of the channel steel, so that the cylindrical stay cable can be better attached to the groove, and the hard rubber sheet with the thickness of 5mm is placed on the arc-shaped steel plate, so that the damper head can not scratch the external protective rubber sheet of the stay cable. The damper head on the one hand needs to be articulated with the adjusting screw for achieving the adjusting function of different angles. The damper base 3 is made of channel steel, and the damper base 3 is fixed on the concrete beam 1 through base fixing bolts. The damping base 3 is provided with a telescopic damper screw rod, and the bottom end of the damper screw rod is fixedly connected with the damper base 3, and the other end of the damper screw rod is hinged with the damper head 7. The structural stability between the damper and the stay cable 9 can be achieved by adjusting the damper lead screw nut 5, and the damping effect is achieved.

In a preferred scheme, the upper surface of the adjusting nut 5 is provided with a limiting table 502, the end part of the sleeve 402 is provided with a convex ring, and the limiting table 502 is sleeved on the convex ring. A plurality of balls 501 are arranged between the limiting table 502 and the end surface of the sleeve 402. The adjusting nut 5 is turned to adjust the distance between the sleeve 402 and the adjusting screw 401.

In a preferred embodiment, the material of the backing plate 8 is rubber or nylon.

In a preferred scheme, the structure of the snap ring 18 is a semicircular structure, and the snap ring 18 is made of rubber or nylon. The structure of the snap ring 18 is that the stay cable 9 is wrapped between the semicircular structures, which is convenient for installation.

In a preferable scheme, the bone sleeve 13 is arranged inside the snap ring 18, the mounting block 14 is arranged below the snap ring 18, the mounting block 14 penetrates through the snap ring 18 to be connected with the bone sleeve 13, and the mounting block 14 is arranged in the fixing hole 701 of the damper head 7. The lower surface of the damper head 7 is provided with a locking nut 15, and the locking nut 15 penetrates through the damper head 7 and is in threaded connection with the mounting block 14. The snap ring 18 is locked on the damper head 7 by the locking nut 15 in the opposite direction, and the installation is simple. The bone sleeve 13 is wrapped with rubber material, and the bone sleeve 13 is made of steel material.

In a preferable scheme, a plurality of mounting claws 17 are further arranged on two sides of the snap ring 18, the mounting claws 17 are connected with the damper head 7 through elastic mounting pieces 16, a U-shaped hook body structure is arranged at the end part of each elastic mounting piece 16, and the U-shaped hook body structure is connected with the mounting claws 17. The U-shaped hook body structure arranged at the end part of the elastic mounting piece 16 can play a good elastic role, after the inclined stay cable 9 is sleeved with the snap ring 18, the elastic mounting piece 16 is installed, so that the snap ring 18 is not easy to fall off when being sleeved on the inclined stay cable 9, and the damping effect can be better achieved due to the specific elastic structure.

In a preferable scheme, an adjusting inclined strut 6 is arranged between the damper head 7 and the telescopic damper 4. An angle adjusting inclined strut is arranged between the damper head 7 and the adjusting screw rod, and the inclined strut can adjust the angle between the damper head and the inclined stay cable according to different inclined pull angles, so that the damper head can be better attached to the inclined stay cable.

The above-mentioned embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the protection scope of the present invention should be defined by the technical solutions described in the claims, and equivalents including technical features in the technical solutions described in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims

1. The utility model provides a temporary damper for cable-stay bridge suspension cable, characterized by: telescopic attenuator (4) are including adjusting screw (401) and sleeve pipe (402), adjusting screw (401) cover is established inside sleeve pipe (402), sleeve pipe (402) one end is equipped with adjusting nut (5), adjusting nut (5) and adjusting screw (401) threaded connection, adjusting nut (5) are connected with sleeve pipe (402) tip rotation, the sleeve pipe (402) other end is equipped with attenuator head (7), attenuator head (7) are articulated with sleeve pipe (402) tip, attenuator head (7) are used for leaning on suspension cable (9), adjusting screw (401) tip is equipped with attenuator base (3), attenuator base (3) are used for setting up on concrete beam (1).

2. The temporary damper for the stay cable of the cable-stayed bridge as set forth in claim 1, wherein: the upper surface of the adjusting nut (5) is provided with a limiting table (502), the end part of the sleeve (402) is provided with a convex ring, and the limiting table (502) is sleeved on the convex ring.

3. The temporary damper for the stay cable of the cable-stayed bridge as set forth in claim 2, wherein: a plurality of balls (501) are arranged between the limiting table (502) and the end face of the sleeve (402).

4. The temporary damper for the stay cable of the cable-stayed bridge as set forth in claim 1, wherein: the end face of the damper head (7) is provided with a backing plate (8) or a snap ring.

5. The temporary damper for a stay cable of a cable-stayed bridge according to claim 4, wherein: the backing plate (8) is made of rubber or nylon.

6. The temporary damper for the stay cable of the cable-stayed bridge as set forth in claim 4, wherein: the structure of the snap ring (18) is a semicircular ring structure, and the material of the snap ring (18) is rubber or nylon.

7. The temporary damper for the stay cable of the cable-stayed bridge as set forth in claim 6, wherein: the bone sleeve (13) is arranged inside the clamping ring (18), the mounting block (14) is arranged below the clamping ring (18), the mounting block (14) penetrates through the clamping ring (18) to be connected with the bone sleeve (13), and the mounting block (14) is arranged in a fixing hole (701) of the damper head (7).

8. The temporary damper for a stay cable of a cable-stayed bridge according to claim 7, wherein: the lower surface of the damper head (7) is provided with a locking nut (15), and the locking nut (15) penetrates through the damper head (7) to be in threaded connection with the mounting block (14).

9. The temporary damper for a stay cable of a cable-stayed bridge according to claim 6, wherein: a plurality of mounting claws (17) are further arranged on two sides of the clamping ring (18), the mounting claws (17) are connected with the damper head (7) through elastic mounting pieces (16), U-shaped hook body structures are arranged at the end portions of the elastic mounting pieces (16), and the U-shaped hook body structures are connected with the mounting claws (17).

10. The temporary damper for a stay cable of a cable-stayed bridge as claimed in claim 1, wherein: an adjusting inclined strut (6) is arranged between the damper head (7) and the telescopic damper (4).