CN111395153B

CN111395153B - Vertical buffering anti vibration is roof beam device even

Info

Publication number: CN111395153B
Application number: CN202010154248.9A
Authority: CN
Inventors: 刘新华; 陈楚龙; 黄古剑; 彭元诚
Original assignee: CCCC Second Highway Survey and Design Institute Co Ltd
Current assignee: CCCC Second Highway Survey and Design Institute Co Ltd
Priority date: 2020-03-07
Filing date: 2020-03-07
Publication date: 2021-05-28
Anticipated expiration: 2040-03-07
Also published as: CN111395153A

Abstract

The invention discloses a vertical buffering anti-vibration beam connecting device, which comprises a steel box beam, a lower bridge tower cross beam and a beam connecting device, wherein two ends of the steel box beam are supported on the lower bridge tower cross beam and are connected with the lower bridge tower cross beam through the beam connecting device, the steel box beam is provided with a plurality of separated cavities in the transverse bridge direction, sleeve holes are formed in an upper wing plate of the lower bridge tower cross beam, the sleeve holes are symmetrically arranged close to two sides of a web plate of the lower bridge tower cross beam, a beam connecting hole is formed in the lower surface of the steel box beam, horn sleeves in the beam connecting device are symmetrically arranged in the sleeve holes and the beam connecting hole, the horn mouths are opposite to each other, two ends of a steel wire rope bundle respectively penetrate through the horn mouths, the bottom end of the steel wire rope bundle is anchored with a reducing end of the horn sleeve at the lower part, the top end of the steel wire rope bundle is anchored with a fixing flange at the reducing end of the horn sleeve at the upper part, the reducing end of the horn sleeve in the sleeve, when the steel box girder vibrates up and down, the vibration is buffered to limit the amplitude.

Description

Vertical buffering anti vibration is roof beam device even

Technical Field

The invention belongs to the field of bridge parts, and particularly relates to a vertical buffering and vibration-resisting connecting beam device.

Background

The strong earthquake zone and the fracture zone are easy to generate large earthquakes with strength exceeding the expected strength, and are positioned on bridges in the regions, and during earthquake, large earthquake force in each direction can cause large relative vertical and horizontal displacement between the upper structure and the lower structure of the bridge. In order to prevent the upper structure beam body from generating large vertical displacement or tilting too high to separate the beam body from the lower beam of the bridge tower or even fall the beam when the super-large earthquake occurs, a vibration-damping energy-consuming buffering device is needed to prevent the risk disasters of separation of the lower beam of the bridge tower, damage of the beam body and falling of the beam body caused by large displacement of the upper structure of the bridge under the action of the super-expected earthquake. This damping power consumption buffer does not play a role when normal operation operating condition, and superstructure can freely vibrate or stretch out and draw back, begins to play a role when the super large earthquake takes place, and the restriction superstructure can not produce too big dislocation, restricts the roof beam body with this, plays the effect of buffering fixed protection.

Disclosure of Invention

In view of the above problems, the present invention aims to provide a pulling device which is simple and convenient in construction, simple in structure, and capable of effectively pulling a beam body, preventing the beam body from being far away from a lower beam of a bridge tower after tilting under the vibration action, and simultaneously enabling the beam body to horizontally swing in the vibration process without damaging the vertical direction in the swing.

The technical scheme for solving the problems is as follows: a vertical buffering anti-vibration connecting beam device comprises a steel box beam, a lower bridge beam and a connecting beam device, wherein two ends of the steel box beam are supported on the upper surface of the lower bridge beam and are connected with the lower bridge beam through the connecting beam device, the steel box beam is provided with a plurality of spacing cavities separated by supporting beams in the transverse bridge direction, the lower bridge beam is provided with a lower bridge beam web corresponding to the supporting beams, the lower bridge beam web supports an upper wing plate of the lower bridge beam, the upper wing plate is provided with sleeve holes, the sleeve holes are symmetrically arranged close to two sides of the lower bridge beam web, the lower surface of the steel box beam is provided with connecting beam holes corresponding to the sleeve holes, the connecting beam device comprises steel wire ropes and horn sleeves, the horn sleeves are symmetrically arranged in the sleeve holes and the connecting beam holes in pairs, so that horn mouths of the horn sleeves are opposite to each other, two ends of the steel wire ropes pass through the horn mouths respectively, the steel wire rope bundle bottom and the telescopic reducing end anchor of the horn of lower part, steel wire rope bundle top and mounting flange anchor, the horn sleeve pipe on upper portion is fixed on the steel box girder, the telescopic reducing end of the downthehole horn of sleeve pipe and the upper wing board anchor, this mounting flange exert the effort to the compartment cavity bottom surface through the buffer spring of cover outside the steel wire rope bundle, make the steel box girder when vibration from top to bottom, the buffering vibration to the restriction amplitude.

Preferably, an anchoring steel plate is embedded in the lower surface of the upper wing plate, and the reducing end of the horn sleeve in the sleeve hole is anchored with the anchoring steel plate.

Furthermore, an inverted U-shaped supporting seat is erected between the buffer spring and the bottom surface of the spacing cavity, the U-shaped supporting seat is sleeved on the periphery of the horn sleeve in the connecting beam hole, and the bottom end of the U-shaped supporting seat is welded and fixed with the bottom surface of the spacing cavity.

Preferably, the horn sleeve in the spacing cavity is fixedly connected with the connecting beam hole, and the horn sleeve is separated from the steel wire rope bundle.

Preferably, the lower surface of the steel box girder is welded with a reinforced steel plate covering the beam connecting hole, the surface of the reinforced steel plate is larger than the bottom section of the inverted U-shaped supporting seat, and the reinforced steel plate is provided with a through hole corresponding to the beam connecting hole.

Preferably, a support base stone is arranged between the bottom surface of the steel box girder and the upper surface of the upper wing plate, and the height of the support base stone is greater than the sum of the heights of the mutually opposite horn sleeves respectively exposed out of the steel box girder and the upper wing plate.

The invention has the beneficial effects that: when the horn sleeves in the spacing cavities are fixed on the steel box girder, the steel wire rope bundles can slide relative to the horn sleeves, when an earthquake does not occur, the buffer springs enable the fixing flanges to be away from the inverted U-shaped supporting seat, when the earthquake occurs, the steel box girder vibrates up and down, the buffer springs absorb potential energy generated when the steel box girder vibrates and reduce vibration speed, after the steel box girder is away from the lower beam of the bridge tower, the steel wire rope bundles and the buffer springs bound the steel box girder together, and the steel box girder is prevented from being warped too high and returns to the original position.

The horn sleeve plays the anticorrosive effect of protection wire rope bundle, because the earthquake ripples are transverse wave generally, the steel box girder removes to take place vertical vibration and still takes place horizontal vibration, and horn sleeve pipe horn mouth is just right each other, can prevent that the sleeve pipe from cutting the wire rope bundle that takes place horizontal displacement when being close to each other.

The steel wire rope bundle belongs to a flexible restraint part and can avoid damaging the lower beam of the bridge tower and the steel box girder when the steel box girder vibrates.

A plurality of spacing cavities are arranged in the transverse bridge direction of the steel box girder, and the existing horizontal beam connecting device can be installed to restrain the relative positions of two adjacent steel box girders.

Drawings

FIG. 1 is a cross-sectional view of a vertical cushioning anti-vibration coupling beam assembly;

FIG. 2 is a cross-sectional view taken along the plane I-I of the vertical buffering and vibration-proof connecting beam device;

fig. 3 is a sectional view of the plane II-II of a vertical buffering and anti-vibration connecting beam device.

Detailed Description

The invention is illustrated with reference to the accompanying drawings:

example 1

As shown in fig. 1 to 3, a vertical buffering and anti-vibration beam connecting device comprises a steel box beam 1, a lower bridge beam 2 and a beam connecting device 3, wherein two ends of the steel box beam 1 are supported on the upper surface of the lower bridge beam 2 and are connected with the lower bridge beam 2 through the beam connecting device 3, the steel box beam 1 is provided with a plurality of compartments 11 separated by supporting beams 12 in the transverse bridge direction, the lower bridge beam 2 is provided with a lower bridge beam web 21 corresponding to the supporting beams 12, the lower bridge beam web 21 supports an upper wing plate 22 of the lower bridge beam 2, the upper wing plate 22 is provided with sleeve holes 23, the sleeve holes 23 are symmetrically arranged near two sides of the lower bridge beam web 21, the lower surface of the steel box beam 1 is provided with a beam connecting hole 13 corresponding to the sleeve holes 23, the beam connecting device 3 comprises steel wire ropes 31 and horn sleeves 32, the horn sleeves 32 are symmetrically arranged in pairs in the sleeve holes 23 and the beam connecting holes 13, so that horn mouths 33 of the horn sleeves 32 are opposite to each other, two ends of the steel wire rope bundle 31 respectively pass through the horn mouth 33, the bottom end of the steel wire rope bundle 31 is anchored with the reducing end 34 of the lower horn sleeve 32, the top end of the steel wire rope bundle 31 is anchored with the fixing flange 35, the horn sleeve 32 in the spacing cavity 11 is fixedly connected with the beam connecting hole 13, and the horn sleeve 32 and the steel wire rope bundle 31 are separated from each other, so that the fixing flange 35 can move relative to the top end of the horn sleeve 32.

The reducing end 34 of the horn sleeve 32 in the sleeve hole 23 is anchored with the anchoring steel plate 4 pre-buried at the bottom surface of the upper wing plate 22, the fixing flange 35 applies acting force to the inverted U-shaped supporting seat 1 through the buffer spring 36 sleeved outside the steel wire rope bundle 31, the U-shaped supporting seat 15 is sleeved at the periphery of the horn sleeve 32 in the beam connecting hole 13, the bottom end of the U-shaped supporting seat is welded and fixed with the bottom surface of the spacing cavity 11, the bottom surface of the spacing cavity 11 is in a shape like a Chinese character 'ji', and the steel box beam 1 is used for buffering vibration and limiting amplitude when vibrating up and down.

Preferably, a reinforcing steel plate 14 covering the beam connecting hole 13 is welded on the lower surface of the steel box beam 1, the surface of the reinforcing steel plate 14 is larger than the bottom section of the inverted U-shaped supporting seat 15, and the reinforcing steel plate 14 is provided with a through hole corresponding to the beam connecting hole 13.

And a support cushion stone 5 is arranged between the bottom surface of the steel box girder 1 and the upper surface of the upper wing plate 22, and the height of the support cushion stone 5 is greater than the sum of the heights of the mutually opposite horn sleeves 32 respectively exposed out of the steel box girder 1 and the upper wing plate 22.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.

Claims

1. A vertical buffering anti-vibration beam connecting device comprises a steel box beam (1), a bridge tower lower beam (2) and a beam connecting device (3), wherein two ends of the steel box beam (1) are supported on the upper surface of the bridge tower lower beam (2) and are connected with the bridge tower lower beam (2) through the beam connecting device (3), the steel box beam (1) is provided with a plurality of spaced cavities (11) separated by supporting beams (12) in the transverse direction, the bridge tower lower beam (2) is provided with a bridge tower lower beam web plate (21) corresponding to the supporting beams (12), the bridge tower lower beam web plate (21) supports an upper wing plate (22) of the bridge tower lower beam (2), the device is characterized in that the upper wing plate (22) is provided with a pipe hole (23), the pipe hole (23) is symmetrically arranged close to two sides of the bridge tower lower beam web plate (21), the lower surface of the steel box beam (1) is provided with a beam connecting hole (13) corresponding to the pipe hole (23), the beam connecting device (3) comprises steel wire rope bundles (31) and horn sleeves (32), the horn sleeves (32) are symmetrically arranged in pairs in sleeve holes (23) and beam connecting holes (13), horn mouths (33) of the horn sleeves (32) are opposite to each other, two ends of the steel wire rope bundles (31) respectively penetrate through the horn mouths (33), the bottom ends of the steel wire rope bundles (31) and the reducing ends (34) of the horn sleeves (32) at the lower parts are anchored, the top ends of the steel wire rope bundles (31) and a fixing flange (35) are anchored, the horn sleeves (32) at the upper parts are fixed on the steel box beam (1), the reducing ends (34) of the horn sleeves (32) in the sleeve holes (23) are anchored with upper wing plates (22), the fixing flange (35) exerts acting force on the bottom surface of the spacing cavity (11) through a buffer spring (36) sleeved outside the steel wire rope bundles (31), and the steel box beam (1) vibrates up and down, damping vibrations and limiting amplitudes.

2. The vertical buffering and anti-vibration connecting beam device as claimed in claim 1, wherein an anchoring steel plate (4) is embedded in the lower surface of the upper wing plate (22), and the reducing end (34) of the horn sleeve (32) in the sleeve hole (23) is anchored with the anchoring steel plate (4).

3. The vertical buffering and anti-vibration connecting beam device is characterized in that an inverted U-shaped supporting seat (15) is erected between the buffering spring (36) and the bottom surface of the spacing cavity (11), the U-shaped supporting seat (15) is sleeved on the periphery of a horn sleeve (32) in the connecting beam hole (13) and the bottom end of the U-shaped supporting seat is welded and fixed with the bottom surface of the spacing cavity (11).

4. The vertical damping and anti-vibration coupling beam device according to any one of claims 1 to 3, characterized in that the horn sleeve (32) is fixedly connected with the coupling beam hole (13) in the compartment (11), and the horn sleeve (32) and the wire rope bundle (31) are separated from each other.

5. The vertical buffering anti-vibration connecting beam device according to claim 3, characterized in that a reinforcing steel plate (14) covering the connecting beam hole (13) is welded on the lower surface of the steel box beam (1), the surface of the reinforcing steel plate (14) is larger than the bottom section of the inverted U-shaped supporting seat (15), and the reinforcing steel plate (14) is provided with a through hole corresponding to the connecting beam hole (13).

6. The vertical buffering anti-vibration connecting beam device according to claim 5, characterized in that a support cushion stone (5) is arranged between the bottom surface of the steel box beam (1) and the upper surface of the upper wing plate (22), and the height of the support cushion stone (5) is greater than the sum of the heights of the mutually opposite horn sleeves (32) of the horn mouths (33) respectively exposed out of the steel box beam (1) and the upper wing plate (22).