CN112196108A

CN112196108A - Energy dissipation damper for wind-proof inhaul cable of air film building

Info

Publication number: CN112196108A
Application number: CN202011178562.7A
Authority: CN
Inventors: 陈昭庆; 张铎; 刘春城; 曾聪; 唐理想; 赵军宾
Original assignee: Northeast Dianli University
Current assignee: Northeast Electric Power University
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-01-08

Abstract

The invention relates to an energy consumption damper for a windproof stay cable of a gas film building, which is characterized by comprising the following components: when the wire is electrified, magnetic powder and silicon oil can be changed into solids to extrude the inhaul cable, so that strong friction force is formed and damping is provided, when the inhaul cable is stretched to generate large displacement suddenly, the internal pressure can be increased suddenly, and the bottom of the outer shell is provided with a nitrogen pressure accumulator so as to prevent the outer shell from deforming due to the sudden increase of the internal pressure; the risk of structure rope-releasing and cable dislocation is reduced, and the risk of collapsing of structure is reduced to the absorption vibration.

Description

Energy dissipation damper for wind-proof inhaul cable of air film building

Technical Field

The invention relates to the field of wind resistance of air film building structures, in particular to an energy consumption damper for a wind-proof inhaul cable of an air film building.

Background

The air film building structure is popular in 70-80 generations in the last century, is used for a dome of a large gymnasium at first, and is in a flat structure, and people begin to doubt the use prospect of the air film building structure due to the fact that snow collapse accidents occur for many times. Around 1990, the structure of the large-rise air film was studied and developed abroad to solve the problem of accumulated snow. In 2006, a plurality of cities in China have large-scale and continuous haze weather, and the novel large-rise air film structure is introduced into China due to good air purifying and haze isolating functions and is mainly used in haze-proof indoor gymnasiums; in 9 months of 2013, the ministry of environmental protection of China issued the haze treatment policy of atmosphere ten items, the punishment on atmospheric pollution of coal burning, industry and heavy pollution industry is increased, and the novel air film structure is widely applied to pollution prevention substance diffusion places such as coal bunkers, garbage disposal plants and the like. In addition, the air film structure also has the advantages of short construction period (21 days to 3 months), low construction cost (1/3 to 1/2 of the traditional building), low operation energy consumption cost (30 to 50 percent of the traditional building), reusability and the like. In the 2006-2015 years, 215 air film buildings are newly added in China.

The influence of various problems generally occurred in the flat air-supported membrane structure historically results in less research on wind resistance. In a plurality of novel air-supported membrane structures built at home and abroad, the situation of serious insufficient consideration of wind resistance occurs, and under the action of strong wind, the damage accident happens occasionally.

The existing air film building structure has the following technical problems:

1. the partial air film building structure has no arrangement of inhaul cables and cable nets, and the wind resistance is extremely poor;

2. the wind resistance of the structure is improved by using longitudinal and transverse guys in part of the air film building structure, and when the wind speed is high, the guys are broken and the film surface is torn;

3. the demand in the aspect of the use function impels the gas film structure to develop towards the direction of bigger span and bigger cover space, and the increase of span and cover space makes gas film structure rigidity reduce, and the compliance increases, and the structure often takes place great vibration and deformation under the strong wind effect, leads to cable and often takes place fatigue damage even fracture with basic connection position.

Disclosure of Invention

The invention provides an energy consumption damper for a windproof stay cable of an air film building, aiming at the problems in the prior art, wherein magnetorheological liquid is adopted in the energy consumption damper, and after a conducting wire is electrified, strong friction force and damping are generated, so that the stay cable can be helped to absorb the damping to obviously reduce the vibration amplitude of the structure, the stay cable vibrates, the risks of structure rope falling and stay cable dislocation are reduced, and the risk of structure collapse is reduced by absorbing the vibration.

The technical scheme adopted for realizing the invention is as follows: the utility model provides an energy consumption attenuator that is used for air film building to prevent wind cable, characterized by, it includes: the magnetorheological fluid damper comprises magnetorheological fluid 2, a piston 3, a wire 4, a seal shell 5, a guy cable 6 and a steel core 7, wherein a liquid chamber is arranged in the seal shell 5, a connecting hole 9 is arranged on a shell body at the lower end of the liquid chamber, a through hole is arranged on a shell body at the upper end of the liquid chamber and is communicated with the liquid chamber, the piston 3 is arranged in the liquid chamber, the liquid chamber is divided into an upper part and a lower part by the piston 3, the magnetorheological fluid 2 is arranged in the liquid chamber, the upper part and the lower part of the liquid chamber separated by the piston 3 are communicated with the magnetorheological fluid 2, the steel core 7 is arranged in the piston 3, the wire 4 is wound outside the steel core 7, the piston 3 is fixedly connected with one end of the guy cable 6, a cylindrical shell is arranged outside the guy cable 6 and the wire 4, the bottom end of the cylindrical shell is fixedly connected with the piston, the lead 4 passes through the through hole and is wound outside the steel core 7, and the cylindrical shell and the shell at the upper end of the liquid chamber are connected in a sliding fit mode through the through hole.

It still includes: nitrogen gas 1, outside elastic layer 10, gas shield 11, central elastic layer 12 liquid room lower extreme set up the gas room upper edge upwards in proper order central elastic layer 12, gas shield 11, outside elastic layer 10 the gas room in set up nitrogen gas 1.

The magnetorheological fluid 2 is magnet powder and silicone oil.

The material of the sealing shell 5 is stainless steel.

And a piston shell 8 is arranged on the outer side of the piston 3, and the piston shell 8 is in threaded connection with the piston 3.

The invention relates to an energy consumption damper for a wind-proof inhaul cable of a gas film building, which has the beneficial effects that:

1. when a lead is electrified, magnetic powder and silicon oil can become solid to extrude the guy cable, so that strong friction force is formed to provide damping, and the damper can help the guy cable to absorb the damping to obviously reduce the vibration amplitude of the structure during breeze vibration;

2. when a wire is electrified, magnetic powder and silicon oil can be changed into solids to extrude the cable, so that strong friction force is formed, damping is provided, when the cable is stretched to generate large displacement suddenly, the internal pressure can be increased sharply, and the bottom of a shell is provided with a nitrogen gas pressure accumulator, so that the shell is prevented from being deformed due to the sudden increase of the internal pressure;

3. the utility model provides an energy consumption attenuator for air film building prevent wind cable, when the wire circular telegram, magnetic and silicon oil can become the solid and produce the extrusion to the cable, form powerful frictional force, provide the damping, and when strong wind arrived, the attenuator passed through magnetic and silicon oil and produces the damping, reduces structure and cable vibration, reduces the risk that the structure broke out the cable and the cable misplaced, and absorption vibration makes the risk of collapsing of structure reduce.

Drawings

FIG. 1 is a cross-sectional view of an energy-dissipating damper for a wind-break cable of an air-film building;

FIG. 2 is an enlarged view of portion A of FIG. 1;

in the figure: 1. nitrogen, 2 magnetorheological liquid, 3 pistons, 4 leads, 5 sealing shells, 6 inhaul cables, 7 steel cores, 8 piston shells, 9 connecting holes, 10 outer elastic layers, 11 gas shielding layers and 12 central elastic layers.

Detailed Description

The present invention will be described in further detail with reference to the accompanying fig. 1-2 and the embodiments, which are described herein for illustrative purposes only and are not intended to limit the present invention.

Referring to fig. 1 and 2, an energy-consuming damper for a wind-proof cable of an air film building comprises: nitrogen 1, magnetorheological fluid 2, a piston 3, a wire 4, a sealing shell 5, a guy cable 6, a steel core 7, an outer elastic layer 10, a gas shielding layer 11 and a central elastic layer 12, wherein a liquid chamber is arranged in the sealing shell 5, a gas chamber is arranged at the lower end of the liquid chamber, the central elastic layer 12, the gas shielding layer 11 and the outer elastic layer 10 are sequentially arranged on the upper edge of the gas chamber, the nitrogen 1 is arranged in the gas chamber, a connecting hole 9 is arranged on a shell body at the lower end of the liquid chamber, a through hole is arranged on a shell body at the upper end of the liquid chamber and is communicated with the liquid chamber, the piston 3 is arranged in the liquid chamber, the liquid chamber is divided into an upper part and a lower part by the piston 3, the magnetorheological fluid 2 is arranged in the liquid chamber, the upper part and the lower part of the liquid chamber which are separated by the piston 3 are communicated with the magnetorheological fluid 2, and the piston 7 is arranged, the outer side of the steel core 7 is wound with a wire 4, one end of the piston 3 is fixedly connected with one end of a cable 6, a cylindrical shell is arranged on the outer sides of the cable 6 and the wire 4, the cable 6 and the wire 4 are fixed with the cylindrical shell, the bottom end of the cylindrical shell is fixedly connected with the piston 3, a through hole is formed in the bottom end of the cylindrical shell, the wire 4 penetrates through the through hole to be wound on the outer side of the steel core 7, the cylindrical shell is connected with a shell on the upper end of a liquid chamber in a sliding fit mode, the magnetorheological liquid 2 is magnet powder and silicon oil, the sealing shell 5 is made of stainless steel, a piston shell 8 is arranged on the outer side of the piston 3, and the piston shell (8) is in threaded connection with the piston (.

When the conducting wire 4 is electrified, the magnetic powder and the silicon oil can be changed into solids to extrude the inhaul cable, so that strong friction force is formed, and damping is provided. When the stretching of the stay cable suddenly generates large displacement, the internal pressure can be increased sharply, the bottom of the shell is provided with the nitrogen accumulator, the shell is prevented from being deformed due to the sudden increase of the internal pressure, and the damper can help the stay cable to absorb damping to obviously reduce the vibration amplitude of the structure when the stay cable vibrates in breeze; when strong wind arrives, the damper generates damping through the magnetic powder and the silicon oil, so that the vibration of the structure and the inhaul cable is reduced, the risk of rope falling and inhaul cable dislocation of the structure is reduced, and the risk of collapse of the structure is reduced by absorbing the vibration.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides an energy consumption attenuator that is used for air film building to prevent wind cable, characterized by, it includes: the magnetorheological fluid damper comprises magnetorheological fluid (2), a piston (3), a lead (4), a sealing shell (5), a guy cable (6) and a steel core (7), wherein a liquid chamber is arranged in the sealing shell (5), a connecting hole (9) is formed in a shell at the lower end of the liquid chamber, a through hole is formed in a shell at the upper end of the liquid chamber and communicated with the liquid chamber, the piston (3) is arranged in the liquid chamber, the liquid chamber is divided into an upper part and a lower part by the piston (3), the magnetorheological fluid (2) is arranged in the liquid chamber, the upper part and the lower part of the liquid chamber separated by the piston (3) are communicated with each other, the steel core (7) is arranged in the piston (3), the lead (4) is wound outside the steel core (7), the piston (3) is fixedly connected with one end of the guy cable (6), and a cylindrical shell is arranged outside the guy cable (6) and the lead (4), the bottom end of the cylindrical shell is fixedly connected with the piston (3), and the cylindrical shell is connected with the shell at the upper end of the liquid chamber in a sliding fit mode through a through hole.

2. The guy rope wind-proof energy consumption damper for the membrane structure building as claimed in claim 1, further comprising: nitrogen gas (1), outside elastic layer (10), gas shield layer (11), central elastic layer (12) liquid room lower extreme set up the gas chamber upper edge upwards in proper order central elastic layer (12), gas shield layer (11), outside elastic layer (10) the gas chamber in set up nitrogen gas (1).

3. The energy consumption damper for the wind-proof guy cable of the air film building as claimed in claim 1, wherein the magnetorheological fluid (2) is magnet powder and silicone oil.

4. The energy consumption damper for the wind-proof inhaul cable of the air film building as claimed in claim 1, wherein the material of the sealing shell (5) is stainless steel.

5. The energy consumption damper for the windproof guy cable of the air film building according to claim 1, characterized in that a piston outer shell (8) is arranged outside the piston (3), and the piston outer shell (8) is in threaded connection with the piston (3).