CN106677427A - Rigid wall airbag pressure-bearing eccentric compression rod piece - Google Patents
Rigid wall airbag pressure-bearing eccentric compression rod piece Download PDFInfo
- Publication number
- CN106677427A CN106677427A CN201611221342.1A CN201611221342A CN106677427A CN 106677427 A CN106677427 A CN 106677427A CN 201611221342 A CN201611221342 A CN 201611221342A CN 106677427 A CN106677427 A CN 106677427A
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- Prior art keywords
- fan
- shaped
- circular
- holding force
- rigid pipe
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C2003/026—Braces
Abstract
The invention relates to a rigid wall airbag pressure-bearing eccentric compression rod piece. Three fan-shaped rigid pipes are installed in a circular rigid pipe, a fan-shaped airbag is installed in each fan-shaped rigid pipe, and fan-shaped force-holding plates are installed at the two ends of each fan-shaped rigid pipe; joint outlets used for installing a feeding valve and a barometer are formed in each fan-shaped airbag, the feeding valve and the barometer are connected with the fan-shaped airbags through airbag feeding holes formed in the circular rigid pipe and the barometer joint outlets formed in the fan-shaped rigid pipes correspondingly, and the two ends of the circular rigid pipe are connected with a threaded cap in a thread mode; and circular force-holding plates are installed in the threaded cap, and force transferring rods are installed between the circular force-holding plates and the fan-shaped force-holding plates. According to the rigid wall airbag pressure-bearing eccentric compression rod piece, through air bag pressure bearing, the eccentric pressure of the eccentric compression rod piece is transformed into rigid-wall tensile stress, and the tensile degree of rigid-wall materials is sufficiently used, so that a rigid wall of the eccentric compression rod piece does not bear the pressure stress, and eccentric compression stability of the rod piece is improved.
Description
Technical field
The invention belongs to the member arts in engineering structure, are related to a kind of firm wall air bearing eccentrically compressed member.
Background technology
The spatial mesh structure such as rack, reticulated shell form is equal in stadiums, railway station, terminal and some unique constructions
There is extensive application.Spatial mesh structure is combined by certain topological relation by the rigid bar of different length.Actual knot
Rod member in structure is typically based on axially loaded, while bearing the rod member in certain Moment, i.e. spatial mesh structure
It is an eccentric compression or eccentric tension rod member.For eccentric tension rod member, can be by being carried using high-strength material
The tensile capacity of high rod member, and the bearing capacity of eccentrically compressed member is then that, by stability control, the strength of materials is eccentric to improving
The bearing capacity of compression member affects little.Limited by slenderness ratio, compression member can not preferably transmit the pressure of relatively long distance,
Additionally, which also limits application of the high-strength material in spatial mesh structure.
The eccentric compression bearing capacity of eccentrically compressed member, makes full use of high-strength material in improve engineering structure, and having must
A kind of rod member of new model is invented, the rod member of the form has higher eccentric compression stability, can make full use of material
Tensile strength, so as to reach the purpose for improving eccentrically compressed member bearing capacity.
The content of the invention
The technical problem to be solved
In order to avoid the deficiencies in the prior art part, the present invention proposes a kind of firm wall air bearing eccentrically compressed member, by gas
The eccentricity pressure of eccentrically compressed member is converted into firm wall tension by capsule pressure-bearing, makes full use of the tensile strength of firm wall material, is made
The firm wall of eccentrically compressed member is not subject to compressive stress, improves the eccentric compression stability of rod member.
Technical scheme
A kind of firm wall air bearing eccentrically compressed member, it is characterised in that including Circular Rigid pipe 1, fan-shaped rigid pipe 5, air bag 7,
Circular holding force plate 3, fan-shaped holding force plate 6, dowel steel 4, charging valve 8, barometer 9 and threaded cap 2；It is provided with Circular Rigid pipe 1
Three fan-shaped rigid pipes 5, are provided with a fan-shaped air bag 7 in each fan-shaped rigid pipe 5, two ends are provided with fan-shaped holding force plate 6；Each fan
Shape air bag 7 is provided with installation charging valve and barometrical connected entrance, and charging valve 8 and barometer 9 pass through respectively Circular Rigid
Airbag aeration hole and barometer intercommunicating pore on pipe 1 and fan-shaped rigid pipe 5 is connected with fan-shaped air bag 7；The two ends of Circular Rigid pipe 1
It is threadedly coupled with threaded cap 2, circular holding force plate 3 is provided with threaded cap 2, between circular holding force plate 3 and fan-shaped holding force plate 6 power transmission is provided with
Bar 4, and dowel steel 4 is hinged respectively with fan-shaped holding force plate 6 and circular holding force plectane 3；The fan-shaped holding force plate and fan-shaped rigid pipe
Inwall sliding contact；The circular holding force plate and Circular Rigid inside pipe wall sliding contact；The reserved circle in the center of the threaded cap
The through hole that holding force plate is connected with the external world, diameter is less than circular holding force board diameter.
3 airbag aeration holes and 3 barometer intercommunicating pores are respectively uniformly distributed on 2 circumference, and each pair air bag fills
Pore is axially corresponded with barometer intercommunicating pore in Circular Rigid pipe, and the center of circle distance between the two is not less than 3 times of maximums diameter of hole.
The central angle of the fan-shaped rigid pipe and air bag 7 is 120 degree.
The dowel steel is a rigid solid or hollow quarter butt structure.
Beneficial effect
A kind of firm wall air bearing eccentrically compressed member proposed by the present invention, by air bag pressure-bearing by the bias of eccentrically compressed member
Pressure is converted into firm wall tension, makes full use of the tensile strength of firm wall material, and the firm wall for making eccentrically compressed member is not subject to pressure
Stress, improves the eccentric compression stability of rod member.Have compared with the rod member applied in existing space network following beneficial
Effect：
1st, the eccentricity pressure of overall rod member is converted into 3 by the present invention by circular holding force plate and connected dowel steel
The axial pressure of fan-shaped air bag, and then be converted into the tension of fan-shaped rigid pipe and Circular Rigid pipe, fan-shaped rigid pipe and circle
Rigid pipe is not subjected to compressive stress, improves the entirety and local stability of eccentrically compressed member, and then improves the inclined of rod member
Heart compression bearing.
2nd, because the eccentrically compressed member of the form has preferable stability, therefore larger axial pressure can be born
And Moment at End, and then improve whole structural stability.
3rd, because fan-shaped rigid pipe and Circular Rigid pipe are subjected only to tension, therefore high-strength material can be made full use of
Improve the eccentric compression bearing capacity of rod member.When fan-shaped rigid pipe and Circular Rigid pipe adopt high-strength material, inside and outside rod member just
Wall can be made it is thinner lighter, so as to reduce the cost of transportation and dead load of component.
4th, present configuration form is simple, it is easy to operate, safety economy, with good market application foreground.
Description of the drawings
Fig. 1 is just wall air bearing eccentrically compressed member axonometric chart of the invention；
Fig. 2 is just wall air bearing eccentrically compressed member longitudinal sectional drawing of the invention；
Fig. 3 is just wall air bearing eccentrically compressed member transverse cross-sectional view of the invention；
Fig. 4 is just wall air bearing eccentrically compressed member Circular Rigid pipe schematic diagram of the invention；
Fig. 5 is just wall air bearing eccentrically compressed member sector rigid pipe schematic diagram of the invention；
Fig. 6 is just wall air bearing eccentrically compressed member sector holding force plate schematic diagram of the invention；
Fig. 7 is just wall air bearing eccentrically compressed member threaded cap schematic diagram of the invention；
Fig. 8 is just wall air bearing eccentrically compressed member circle holding force plate schematic diagram of the invention；
Fig. 9 is just wall air bearing eccentrically compressed member air bag schematic diagram of the invention；
Figure 10 is just wall air bearing eccentrically compressed member circle holding force plate stress diagram of the invention；
In figure：1- Circular Rigid pipes, 2- threaded caps, 3- circle holding force plates, 4- dowel steels, 5- sector rigid pipes, 6- are fan-shaped
Holding force plate, 7- air bags, 8- charging valves, 9- barometers, 10- barometer connected entrances.
Specific embodiment
In conjunction with embodiment, accompanying drawing, the invention will be further described：
The present invention adopts following technology implementation scheme：Firm wall air bearing eccentrically compressed member axonometric chart, longitudinal sectional drawing and horizontal stroke
See Fig. 1-3, including Circular Rigid pipe 1 (see Fig. 4), threaded cap 2 (see Fig. 7), circular holding force plate 3 (see Fig. 8), power transmission to profile
Bar 4, fan-shaped rigid pipe 5 (see Fig. 5), fan-shaped holding force plate 6 (see Fig. 6), air bag 7 (see Fig. 9), charging valve 8, barometer 9, air pressure
Meter intercommunicating pore 10.
The Circular Rigid pipe is the higher hollow circular-tube of the strength of materials, and two ends outer wall is threaded, on Qi Gangbi
It is reserved with 3 airbag aeration holes and 3 barometer intercommunicating pores, 3 airbag aeration holes and 3 uniform point respectively of barometer intercommunicating pores
On 2 circumference, airbag aeration hole and barometer intercommunicating pore are axially corresponded cloth in Circular Rigid pipe, the distance of center circle between the two
From not less than 3 times of maximums diameter of hole, design must be strengthened around hole.
The central angle of the fan-shaped rigid pipe is 120 degree, is the higher hollow pipe of the strength of materials, outside fan-shaped rigid pipe cylinder
Surface curvature is identical with Circular Rigid pipe internal surface curvature.Connect in the reserved airbag aeration hole in its cylinder ring center and barometer
Through hole, and it is corresponding with Circular Rigid tube airbag air-filled pore and barometer intercommunicating pore, need to strengthen design around hole.
The air bag is axially placed along sector tube inside；The shape fan-shaped cylinder consistent with fan-shaped rigidity pipe internal surface,
Material can select the good membrane material of air-tightness, and with certain intensity and contractility.Air bag is axially put along fan-shaped rigid pipe inside
Put, be preset with charging valve and barometer connected entrance, connect hole site with the reserved air-filled pore of fan-shaped rigid pipe and barometer respectively
It is corresponding.
The fan-shaped holding force plate is inscribed within fan-shaped rigidity inside pipe wall positioned at balloon ends；Using with certain thickness sector
Plate, material can be the other materials of steel or better performances, and it is dimensioned slightly smaller than the inner face size of fan-shaped rigid pipe, fan-shaped holding force
The part that plate is contacted with fan-shaped rigidity inside pipe wall should be smooth, it is ensured that fan-shaped holding force plate can be in the axially free cunning of fan-shaped rigidity inside pipe wall
It is dynamic.
The circular holding force plate is located at fan-shaped rigid pipe two ends and is inscribed within Circular Rigid inside pipe wall；Using with certain thickness
Circular slab, material can be the other materials of steel or better performances, and its diameter be slightly less than Circular Rigid bore, circular holding force
The part that plate is contacted with Circular Rigid pipe should be smooth, it is ensured that circular holding force plate can be in the axially free slip of Circular Rigid pipe.
The dowel steel is hinged respectively with fan-shaped holding force plate and circular holding force plate；For a rigid solid or hollow quarter butt, palpus
The axial compressive force from circular holding force plate and fan-shaped holding force plate can be born.
The threaded cap is a kind of load transfer device, can will give Circular Rigid pipe from the pressure transmission of circular holding force plate；
The reserved circular opening in the center of threaded cap, is connected for circular holding force plate with the external world, and hole diameter is than circular holding force board diameter
It is little, it is ensured that circular holding force plate has enough power transmission areas with threaded cap.The screw thread specification of threaded cap and Circular Rigid pipe two ends
Screw thread match specifications.
The barometer is arranged on by the reserved barometer intercommunicating pore of Circular Rigid pipe, and by Circular Rigid pipe and sector
The reserved barometer intercommunicating pore of rigid pipe is connected with air bag；The threaded cap and Circular Rigid pipe two ends are respectively with being threadedly coupled.
Specifically it is assembled into：Three fan-shaped rigid pipes 5 are disposed coaxially within Circular Rigid pipe 1,3 fan-shaped rigid pipes are made
Reserved airbag aeration hole and barometer intercommunicating pore reserves airbag aeration holes with 3 groups of Circular Rigid pipe respectively and barometer is connected
Hole corresponds；3 air bags 7 are disposed coaxially within fan-shaped rigid pipe 5, the charging valve 8 of each air bag 7 both passes through sector
The reserved airbag aeration hole of rigid pipe 5 and Circular Rigid pipe 1 is simultaneously fixed on Circular Rigid tube wall, the air pressure of each air bag 7
Meter intercommunicating pore 10 both passes through fan-shaped rigid pipe 5 and the reserved barometer intercommunicating pore of Circular Rigid pipe 1 is connected with barometer 9；6 pieces of fans
Shape holding force plate 6 is respectively placed in the two ends of 3 air bags 7, and per block, fan-shaped holding force plate 6 is respectively by dowel steel 4 and the circular phase of holding force plate 3
Even, the two ends of dowel steel 4 are and are hinged with fan-shaped holding force plate and circular holding force plate, finally by two threaded caps 2 and Circular Rigid pipe 1
Two ends are closely connected by screw thread.
When using：
According to above-mentioned technical proposal by firm wall air bearing eccentrically compressed member installation after, connect gas respectively using inflator pump
Capsule charging valve 8, while being inflated to three air bags 7, is inflated to air pressure in three air bags 7 and reaches scope of design, stops
Inflation.Three barometers 9 are used to monitor the air pressure of each air bag.When being inflated to air bag 7, air bag 7 increases with air pressure
And expand, pressure effect is produced to fan-shaped tube wall and the fan-shaped holding force plate 6 positioned at its two ends, fan-shaped holding force plate 6 is in air bag pressure
Slide to fan-shaped rigid pipe two ends under power effect, gasbag pressure is further passed to circle by fan-shaped holding force plate 6 by dowel steel 4
Holding force plate 3, circular holding force plate 3 slides under gasbag pressure effect to Circular Rigid pipe two ends, and is in close contact with threaded cap 2,
Most at last gasbag pressure passes to Circular Rigid pipe by threaded cap 2.Under this poised state, the tube wall of fan-shaped rigid pipe 5 is only
Ring action of pulling stress is born, the tube wall of Circular Rigid pipe 1 bears ring tension and axial tension stress effect simultaneously.
In normal operating conditions, the eccentrically compressed member can be subject to from outer just wall air bearing eccentrically compressed member of the invention
The eccentricity pressure effect F in portion0, eccentric throw is e0.Eccentricity pressure F0Act directly on circular holding force plate 3, in this case, circle
Shape holding force plate 3 bears the pressure F from 3 air bags 7 simultaneously1、F2、F3With the eccentricity pressure F from outside0, the two direction phase
Instead, additionally, circular holding force plate 3 will also bear the non uniform pressure from threaded cap 2, top half threaded cap 2 and the latter half
Threaded cap 2 to be acted on and be respectively F with joint efforts on circular holding force plate 3g1、Fg2, the circular stress diagram of holding force plectane 3 is shown in Figure 10,
In figure in the presence of 6 power, circular holding force plate 3 is in poised state, and equilibrium equation is as follows：
∑ F=0, F1+F2+F3=F0+Fg1+Fg2 (1)
Σ M=0, F1×l1-(F2+F3)×l2=F0×e0+Fg1×(e0+e1)-Fg2×e2 (2)
The stressing conditions of rod member Circular Rigid tube wall are divided into following several working conditions and illustrate：Working condition (1)
As the eccentricity pressure F from outside that circular holding force plate 3 bears0Close more than zero but less than the bulbs of pressure from 3 air bags 7
Power, and axle power (F suffered by every dowel steel1、F2、F3) be less than initial axle power when, circular holding force plate 3 is close to threaded cap 2,
And axial tension is transmitted to Circular Rigid pipe 1 by threaded cap 2, in this case, rod member Circular Rigid pipe bears axially non-equal
Even tension；The eccentricity pressure F from outside that working condition (2) is born when circular holding force plate 30More than zero but less than from 3
The bulbs of pressure of individual air bag 7 are made a concerted effort, but the axle power (F of a dowel steel have occurred1Or F2Or F3) more than gasbag pressure when, with
Corresponding fan-shaped holding force plate 6 will move to the inside of rod member, compressing gasbag 7, the volume-diminished pressure of air bag 7 increase, work as air bag
Pressure reaches balance when equal with corresponding dowel steel axle power, occurs between circular holding force plate 3 and threaded cap 2 in this case
Axially is there is not tensile zone in zero pressure area, Circular Rigid tube wall；Working condition (3) is with eccentricity pressure F0Continuation increase
Plus, there is the situation more than gasbag pressure in succession in remaining dowel steel axle power, and all fan-shaped holding force plates all will be moved to the inside of rod member
It is dynamic, balance is reached again when gasbag pressure is equal with corresponding dowel steel axle power, now Circular Rigid pipe total cross-section is shaftless
To tension.In working order fan-shaped rigid pipe 5 is not subject to axial tension stress in (1) (2) (3), and only bears ring drawing
Stress, and it is big apart from ring tension suffered by the near fan-shaped rigid pipe of eccentricity pressure application point.Working condition (3) can be by gas
Capsule inflate to working condition (2) transformation, working condition (2) also can by airbag aeration to working condition (1) change, conversely,
When air bag pressure declines, working condition (1) gradually will change to working condition (2) (3).
In sum, in three kinds of working conditions, though the firm wall air bearing eccentrically compressed member of the present invention is by from outside
Eccentricity pressure is acted on, but the rod member sector rigid pipe and Circular Rigid Guan Jun are not subject to compressive stress, from outside eccentric pressure
Power is first converted into the axial pressure of internal 3 fan-shaped rod members, and is finally born by the high-pressure gasbag inside rod member completely, high pressure
Eccentricity pressure is further converted into air bag the tension of fan-shaped rigid pipe and Circular Rigid pipe, has been reached and has been made full use of firm wall material
Material tensile strength, improves the purpose of rod member eccentric compression bearing capacity.
Claims (4)
1. a kind of firm wall air bearing eccentrically compressed member, it is characterised in that including Circular Rigid pipe (1), fan-shaped rigid pipe (5), air bag
(7), circular holding force plate (3), fan-shaped holding force plate (6), dowel steel (4), charging valve (8), barometer (9) and threaded cap (2；Circle
Three fan-shaped rigid pipes (5) are provided with shape rigid pipe (1), a fan-shaped air bag (7) is provided with each fan-shaped rigid pipe (5), two
End is provided with fan-shaped holding force plate (6)；Each fan-shaped air bag (7) is provided with installation charging valve and barometrical connected entrance, charge valve
Door (8) and barometer (9) are connected respectively by the airbag aeration hole on Circular Rigid pipe (1) and fan-shaped rigid pipe (5) and barometer
Through hole is connected with fan-shaped air bag (7)；The two ends of Circular Rigid pipe (1) are threadedly coupled with threaded cap (2), are provided with threaded cap (2)
Circular holding force plate (3), is provided with dowel steel (4) between circular holding force plate (3) and fan-shaped holding force plate (6), and dowel steel (4) respectively with fan
Shape holding force plate (6) and circular holding force plectane (3) are hinged；The fan-shaped holding force plate and fan-shaped rigidity inside pipe wall sliding contact；It is described
Circular holding force plate and Circular Rigid inside pipe wall sliding contact；The reserved circle holding force plate in the center of the threaded cap is connected with the external world
Through hole, diameter is less than circular holding force board diameter.
2. firm wall air bearing eccentrically compressed member according to claim 1, it is characterised in that：Three airbag aeration holes and three
Individual barometer intercommunicating pore is respectively uniformly distributed on two circumference, and each pair airbag aeration hole is with barometer intercommunicating pore in Circular Rigid
Pipe is axially corresponded, and the center of circle distance between the two is not less than three times maximum diameter of hole.
3. firm wall air bearing eccentrically compressed member according to claim 1, it is characterised in that：The fan-shaped rigid pipe and air bag
Central angle is 120 degree.
4. firm wall air bearing eccentrically compressed member according to claim 1, it is characterised in that：The dowel steel is a rigid solid
Or hollow quarter butt structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611221342.1A CN106677427B (en) | 2016-12-27 | 2016-12-27 | A kind of rigid wall air bearing eccentrically compressed member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611221342.1A CN106677427B (en) | 2016-12-27 | 2016-12-27 | A kind of rigid wall air bearing eccentrically compressed member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106677427A true CN106677427A (en) | 2017-05-17 |
| CN106677427B CN106677427B (en) | 2018-11-16 |
Family
ID=58870436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611221342.1A Active CN106677427B (en) | 2016-12-27 | 2016-12-27 | A kind of rigid wall air bearing eccentrically compressed member |
Country Status (1)
| Country | Link |
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| CN (1) | CN106677427B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4807405A (en) * | 1987-08-20 | 1989-02-28 | Borgquist Ronald B | Geodesic inflatable structure, and methods of constructing and utilizing same |
| JPH0842158A (en) * | 1994-07-28 | 1996-02-13 | Manabu Yamaguchi | Simple building to maintain whole shape by enclosing gas in skeleton |
| CN202108114U (en) * | 2011-06-03 | 2012-01-11 | 深圳市博德维建筑技术有限公司 | Installation structure of a dragline gas-film building cave mouth |
| CN102808452A (en) * | 2012-07-12 | 2012-12-05 | 唐戍鸣 | Node type inflated rack structure |
| CN202831759U (en) * | 2012-09-25 | 2013-03-27 | 中国电力工程顾问集团东北电力设计院 | Air inflation steel tube constructional element |
| CN102995748A (en) * | 2012-12-06 | 2013-03-27 | 北京工业大学 | Pneumatic membrane compression bar and manufacturing method thereof |
| CN203247770U (en) * | 2013-05-08 | 2013-10-23 | 山东科技大学 | Steel pipe barometric column |
| CN104120831A (en) * | 2014-08-11 | 2014-10-29 | 哈尔滨工业大学 | Large-span inflatable pre-stress truss string and construction method thereof |
-
2016
- 2016-12-27 CN CN201611221342.1A patent/CN106677427B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4807405A (en) * | 1987-08-20 | 1989-02-28 | Borgquist Ronald B | Geodesic inflatable structure, and methods of constructing and utilizing same |
| JPH0842158A (en) * | 1994-07-28 | 1996-02-13 | Manabu Yamaguchi | Simple building to maintain whole shape by enclosing gas in skeleton |
| CN202108114U (en) * | 2011-06-03 | 2012-01-11 | 深圳市博德维建筑技术有限公司 | Installation structure of a dragline gas-film building cave mouth |
| CN102808452A (en) * | 2012-07-12 | 2012-12-05 | 唐戍鸣 | Node type inflated rack structure |
| CN202831759U (en) * | 2012-09-25 | 2013-03-27 | 中国电力工程顾问集团东北电力设计院 | Air inflation steel tube constructional element |
| CN102995748A (en) * | 2012-12-06 | 2013-03-27 | 北京工业大学 | Pneumatic membrane compression bar and manufacturing method thereof |
| CN203247770U (en) * | 2013-05-08 | 2013-10-23 | 山东科技大学 | Steel pipe barometric column |
| CN104120831A (en) * | 2014-08-11 | 2014-10-29 | 哈尔滨工业大学 | Large-span inflatable pre-stress truss string and construction method thereof |
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| Publication number | Publication date |
|---|---|
| CN106677427B (en) | 2018-11-16 |
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