CN208137186U - Assembling truss type light steel frame-punching sheet metal-Combined concrete wall - Google Patents
Assembling truss type light steel frame-punching sheet metal-Combined concrete wall Download PDFInfo
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- CN208137186U CN208137186U CN201820367947.XU CN201820367947U CN208137186U CN 208137186 U CN208137186 U CN 208137186U CN 201820367947 U CN201820367947 U CN 201820367947U CN 208137186 U CN208137186 U CN 208137186U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 152
- 239000010959 steel Substances 0.000 title claims abstract description 152
- 239000004567 concrete Substances 0.000 title claims abstract description 141
- 238000004080 punching Methods 0.000 title claims abstract description 73
- 239000002184 metal Substances 0.000 claims abstract description 31
- 210000002356 Skeleton Anatomy 0.000 claims abstract description 6
- 238000009415 formwork Methods 0.000 claims abstract description 5
- 239000000725 suspension Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 12
- 238000005452 bending Methods 0.000 abstract description 4
- 238000005266 casting Methods 0.000 abstract description 2
- 238000011065 in-situ storage Methods 0.000 abstract description 2
- 230000035939 shock Effects 0.000 description 10
- 239000002689 soil Substances 0.000 description 8
- 230000008929 regeneration Effects 0.000 description 7
- 238000011069 regeneration method Methods 0.000 description 7
- 230000002787 reinforcement Effects 0.000 description 6
- 239000004574 high-performance concrete Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001965 increased Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing Effects 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000002035 prolonged Effects 0.000 description 1
- 230000001681 protective Effects 0.000 description 1
- 230000003014 reinforcing Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Abstract
The utility model relates to a kind of assembling truss type light steel frame-punching sheet metal-Combined concrete walls.In the utility model, steel pipe concrete frame column, steel pipe concrete frame beam and wall concrete-filled steel tube truss rib are together, form wallboard concrete-filled steel tube truss stress system, and faced wall steel skeleton is formed together with punching sheet metal, improve wallboard globality, formwork casting concrete forms assembling truss type light steel frame-punching sheet metal-Combined concrete wall after maintenance, and only needs that faced wall is assembled in external structure by connection bolt.Assembled faced wall in the utility model has preferable bending resistance, shear-carrying capacity and out of plane stiffness, anti-seismic performance is good, simultaneously, wallboard adopts plant produced, assembled in situ effectively dissolves site operation bring common quality defect, greatly improves engineering construction efficiency, the engineering amount of labour used is reduced, the wide popularization and application in the low multilayer rural housing structure in villages and small towns is suitble to.
Description
Technical field：
The utility model belongs to assembled faced wall manufacture technology field in structural engineering, and in particular to a kind of assembly
Formula truss type light steel frame-punching sheet metal-Combined concrete wall and the practice.
Background technique：
Currently, China is in novel urbanization, new countryside construction flourishes period, and the new rural village having a large capacity and a wide range is built
It makes, urgent New rural reformation target, so that easy integrated house, low layer prefabricated buildings start in low multilayer rural housing structure
In grow up.At this stage, the beam column that integrated house, prefabricated buildings mostly use steel structure member or steel and concrete structure component to form
Main stress system of the frame as building structure, wall is out-hung panel or filling wall, therefore has and dismount convenient, layout spirit
The living, good characteristics such as the construction period is short.But meanwhile the main member as building structure, out-hung panel and filled-in panel, be only capable of
As the fender member in house, stress cannot be participated in, therefore there are building structure low bearing capacity, ductility are poor, mostly occur brittle break
The problem of, there is also stability poor, the problem of shock resistance difference that house is whole, to greatly constrain integrated house, assembled
Application of the house in house.
China's country building amount accounts for the 60% of national total building amount, and how rationally most agriculture rooms are located at area of providing fortification against earthquakes,
Wall is designed and utilized, the bearing capacity of low layer integrated house, prefabricated buildings is improved, enhances its shock resistance, without influencing it
Wall with bearing capacity and function of seismic resistance is applied to low tier building by the flexible advantage of space layout, especially new agriculture
Village is built in the low multilayer rural housing structure in villages and small towns in period, is the key that push the novel urbanization in China, new countryside construction.
Therefore, it is economical and practical to research and develop one kind, cheap, easy construction is suitable for low tier building, especially villages and small towns
The assembled faced wall of low multilayer rural housing structure has highly important practice significance and social economic value.
Summary of the invention：
The utility model provides a kind of assembling truss type light steel frame-punching sheet metal-Combined concrete wall, is low
Multilayer integrated house, prefabricated buildings provide a kind of work of assembled wall with preferable bearing capacity and shock resistance
Method is suitble to be widely popularized in the low tier building with requirements for fortification against earthquake, the especially low multilayer agriculture in villages and small towns room, to solve mesh
Preceding rural housing structure lacks earthquake resistant construction, the status of shock resistance weakness.Meanwhile component assembled in situ, construction is simple, it can promote
The completion of new countryside construction developing goal.
To achieve the above object, the utility model adopts the following technical solution：
A kind of assembling truss type light steel frame-punching sheet metal-Combined concrete wall, including steel pipe concrete frame column
(1), steel pipe concrete frame beam (2), punching sheet metal (3), concrete-filled steel tube truss rib (4), concrete (5), connection board
(6) and bolt (7) are connected；The punching sheet metal (3) is to pass through mold through punching machine on steel plate of the plate thickness no more than 5mm
The steel plate that punching press is portalled, the hole heart are not less than the 1/2 of punching sheet metal (3) area away from 50mm, punching area is not less than；It is mixed in steel pipe
The capital and suspension column position of solidifying soil frame columns (1) are respectively welded connection board (6), prefabricated bolt hole in connection board (6)；Steel
Pipe concrete frame columns (1) and steel pipe concrete frame beam (2) are welded, and faced wall light steel frame frame, weldering inside frame are formed
Punching sheet metal (3) are connect, then in punching sheet metal two sides arranged crosswise concrete-filled steel tube truss rib (4), concrete filled steel tube purlin
Frame rib (4) both ends are welded and fixed with faced wall light steel frame frame, so far, form faced wall steel skeleton；It is mixed that formwork pours wallboard
Solidifying soil (5), forms a kind of assembling truss type light steel frame-punching sheet metal-Combined concrete wall after maintenance；When assembly, group
It closes wall and is attached with external structure by connecting bolt (7).
The assembling truss type light steel frame-punching sheet metal-Combined concrete wall, it is characterised in that：
The steel pipe concrete frame column (1) and steel pipe concrete frame beam (2) use rectangular or rectangular steel pipe, steel pipe
Wall thickness is not more than 8mm, and steel tube section side length is not less than 50mm, manages interior fill concrete.Concrete filled steel tube is with higher to be cut
Bearing capacity, steel pipe concrete frame column (1) and steel pipe concrete frame beam (2) welding, form faced wall light steel frame frame, show
Write the shearing strength for increasing wallboard.
The punching sheet metal (3) is the steel plate for going out round hole, square hole or rectangular opening by mould punching through punching machine,
Punching sheet metal (3) is arranged in the middle part of light steel frame frame, while being cast in the middle part of concrete (5).Punching sheet metal (3) is fixed
It is welded and fixed behind position with wallboard steel pipe concrete frame, is cast in concrete and plays the role of reinforcement, but compare configuration reinforcement
Construct it is simpler, have the characteristics that globality is strong, mesh uniformly, also in process, it is low in cost, improve rigid outside wallboard plane
Degree, improves wallboard shock resistance.
The concrete-filled steel tube truss rib (4) is formed using rectangular or rectangular steel pipe fill concrete, and thickness of steel pipe is not
Greater than 5mm, the wall concrete-filled steel tube truss rib (4) and wall light steel frame frame of punching sheet metal (3) two sides arranged crosswise
Together, wallboard truss stress frame is constituted；When concrete (5) pours, concrete-filled steel tube truss rib (4) is partly or entirely cast in
In wallboard.The setting of concrete-filled steel tube truss rib (4) increases the outer bearing capacity of wallboard bending resistance, shear resistance and plane, improves
Wallboard antidetonation is horizontal.
The concrete (5) pours thickness 40mm~100mm, and strength grade of concrete is C30~C60；Concrete (5)
For normal concrete, the regeneration concrete or high performance concrete of different regenerated coarse aggregate volumes.Regeneration concrete is Old building
After broken, cleaning, classification, obtained aggregate is prepared recycled concrete aggregate after dismounting, mixed using regeneration
Solidifying soil, realizes the recycling of discarded concrete and the treatment principle of minimizing, the work that can be played protection environment and economize on resources
With with significant social benefit, promotion national sustainable development.According to requirement of engineering, it can configure the performances such as cracking resistance, anticorrosive
High performance concrete.
The steel plate thickness that the connection board (6) uses is not less than 6mm, is machined in connection board and is correspondingly connected with bolt
(7) bolt hole in aperture.When connection board (6) and steel pipe concrete frame column (1) are welded, it can weld ribbed stiffener and reinforce connection.
The connection bolt (7) is not less than M16, and intensity is not less than 8.8 grades, when faced wall is installed, each connection board
(6) the connection bolt (7) on is no less than 4.
Compared with prior art, the assembling truss type light steel frame-punching sheet metal-Combined concrete of the utility model
Wall has following advantage：
(1) traditional assembled wall is mostly out-hung panel or big module filling wall, is only capable of the fender member as house, no
Stress can be participated in, therefore there are building structure overall stability poor, low bearing capacity, ductility are poor, shock resistance is weak, the brittleness that mostly occurs is broken
Bad problem, assembling truss type light steel frame provided by the utility model-punching sheet metal-Combined concrete wall, in structure
In serve as primary structure member, have preferable bearing capacity and shock resistance, be suitble to build in the low multilayer with requirements for fortification against earthquake
It builds, is especially widely popularized in the low multilayer agriculture in villages and small towns room, to promote the completion of new countryside construction developing goal.
(2) faced wall is selectively arranged in column net as antidetonation unit, and it is weak to be arranged in low tier building structure stress
Position, so that building structure lateral rigidity and shock resistance are increased, without influencing the building standard width of a room in an old-style house and layout.
(3) steel pipe concrete frame column, steel pipe concrete frame beam and concrete-filled steel tube truss rib together, the shape in wallboard
At concrete-filled steel tube truss stress system, damage of wall damage -form is changed, bearing capacity of wall body can be effectively improved and is prolonged
Property.
(4) steel pipe concrete frame beam column forms the design of wall light steel frame frame, improves wallboard globality, makes up
At concrete thin wall plate member bezel locations, easily occur in lifting, transport and work progress knock angle, fragmentation influence it is mixed
The problem of thin wallboard of solidifying soil uses, improves assembled wallboard quality.
(5) punching sheet metal plays the role of reinforcement in concrete panel, but simpler than configuration reinforcement construction, and it is fixed to be easy to
Position, have the characteristics that globality is strong, mesh uniformly, also in process, it is low in cost, improve wallboard out of plane stiffness, improve
Wallboard shock resistance.
(6) concrete filled steel tube and punching sheet metal form the design of wallboard steel skeleton, increase wallboard bending resistance, shear resistance
And the outer bearing capacity of plane, wallboard anti-seismic performance is improved, the utility model is generalized in rural housing structure, in face of what is had a large capacity and a wide range
Low multilayer agriculture housing reform is made, and the anti-seismic performance in agriculture room can be quickly and effectively improved.
(7) R.C. wall board layer thinner thickness is conducive to transport and the assembly of construction site from heavy and light.Meanwhile steel pipe is mixed
Environmentally protective regeneration concrete can be used in solidifying soil and R.C. wall board, may advantageously facilitate national sustainable development target.
(8) traditional seismic structural wall, earthquake resistant wall is mostly site concrete, and the faced wall of the utility model is prefabricated member, prefabrication, wall
Plate pouring quality is guaranteed, and building site is mounted directly, and effectively save resource reduces energy consumption, while greatly shortening and applying
Between working hour.Fabricated structure type can quickly and effectively improve the anti-seismic performance in house, to realization housing industrialization, city
Townization construction, which has, is greatly promoted effect, is a kind of developmental achievement of new composite structure agriculture room technology, to promotion Traditional Agricultural
The improvement of room structure technology plays a significant role.
Detailed description of the invention：
Fig. 1 is assembling truss type light steel frame-punching sheet metal-Combined concrete wall partial schematic diagram；
Fig. 2 is assembling truss type light steel frame-punching sheet metal-Combined concrete wall steel skeleton partial schematic diagram；
Fig. 3 is assembling truss type light steel frame-punching sheet metal-Combined concrete wall assembly effect picture.
In figure：1- steel pipe concrete frame column；2- steel pipe concrete frame beam；3- punching sheet metal；4- concrete filled steel tube
Truss rib；5- concrete；6- connection board；7- connection bolt.
Specific embodiment：
A kind of assembling truss type light steel frame-punching sheet metal-Combined concrete wall, including steel pipe concrete frame column
(1), steel pipe concrete frame beam (2), punching sheet metal (3), concrete-filled steel tube truss rib (4), concrete (5), connection board
(6) and bolt (7) are connected；The punching sheet metal (3) is to pass through mold through punching machine on steel plate of the plate thickness no more than 5mm
The steel plate that punching press is portalled, the hole heart are not less than the 1/2 of punching sheet metal (3) area away from 50mm, punching area is not less than；It is mixed in steel pipe
The capital and suspension column position of solidifying soil frame columns (1) are respectively welded connection board (6), prefabricated bolt hole in connection board (6)；Steel
Pipe concrete frame columns (1) and steel pipe concrete frame beam (2) are welded, and faced wall light steel frame frame, weldering inside frame are formed
Punching sheet metal (3) are connect, then in punching sheet metal two sides arranged crosswise concrete-filled steel tube truss rib (4), concrete filled steel tube purlin
Frame rib (4) both ends are welded and fixed with faced wall light steel frame frame, so far, form faced wall steel skeleton；It is mixed that formwork pours wallboard
Solidifying soil (5), forms a kind of assembling truss type light steel frame-punching sheet metal-Combined concrete wall after maintenance；When assembly, group
It closes wall and is attached with external structure by connecting bolt (7).
The assembling truss type light steel frame-punching sheet metal-Combined concrete wall, it is characterised in that：
The steel pipe concrete frame column (1) and steel pipe concrete frame beam (2) use rectangular or rectangular steel pipe, steel pipe
Wall thickness is not more than 8mm, and steel tube section side length is not less than 50mm, manages interior fill concrete.Concrete filled steel tube is with higher to be cut
Bearing capacity, steel pipe concrete frame column (1) and steel pipe concrete frame beam (2) welding, form faced wall light steel frame frame, show
Write the shearing strength for increasing wallboard.
The punching sheet metal (3) is the steel plate for going out round hole, square hole or rectangular opening by mould punching through punching machine,
Punching sheet metal (3) is arranged in the middle part of light steel frame frame, while being cast in the middle part of concrete (5).Punching sheet metal (3) is fixed
It is welded and fixed behind position with wallboard steel pipe concrete frame, is cast in concrete and plays the role of reinforcement, but compare configuration reinforcement
Construct it is simpler, have the characteristics that globality is strong, mesh uniformly, also in process, it is low in cost, improve rigid outside wallboard plane
Degree, improves wallboard shock resistance.
The concrete-filled steel tube truss rib (4) is formed using rectangular or rectangular steel pipe fill concrete, and thickness of steel pipe is not
Greater than 5mm, the wall concrete-filled steel tube truss rib (4) and wall light steel frame frame of punching sheet metal (3) two sides arranged crosswise
Together, wallboard truss stress frame is constituted；When concrete (5) pours, concrete-filled steel tube truss rib (4) is partly or entirely cast in
In wallboard.The setting of concrete-filled steel tube truss rib (4) increases the outer bearing capacity of wallboard bending resistance, shear resistance and plane, improves
Wallboard antidetonation is horizontal.
The concrete (5) pours thickness 40mm~100mm, and strength grade of concrete is C30~C60；Concrete (5)
For normal concrete, the regeneration concrete or high performance concrete of different regenerated coarse aggregate volumes.Regeneration concrete is Old building
After broken, cleaning, classification, obtained aggregate is prepared recycled concrete aggregate after dismounting, mixed using regeneration
Solidifying soil, realizes the recycling of discarded concrete and the treatment principle of minimizing, the work that can be played protection environment and economize on resources
With with significant social benefit, promotion national sustainable development.According to requirement of engineering, it can configure the performances such as cracking resistance, anticorrosive
High performance concrete.
The steel plate thickness that the connection board (6) uses is not less than 6mm, is machined in connection board and is correspondingly connected with bolt
(7) bolt hole in aperture.When connection board (6) and steel pipe concrete frame column (1) are welded, it can weld ribbed stiffener and reinforce connection.
The connection bolt (7) is not less than M16, and intensity is not less than 8.8 grades, when faced wall is installed, each connection board
(6) the connection bolt (7) on is no less than 4.
Assembling truss type light steel frame-punching sheet metal-Combined concrete wall in invention, is explained in conjunction with attached drawing 1~3
Bright the utility model the production method is as follows：
The first step：It casting concrete and is conserved in steel pipe, forms steel pipe concrete frame column, the concrete filled steel tube of wallboard
Frame beam and wall concrete-filled steel tube truss rib；Processing is correspondingly connected with the bolt hole in bolt aperture on the connection board, then will
Connection board is respectively welded at each steel pipe concrete frame column capital and column bottom；By steel pipe concrete frame column, steel tube concrete
Tu Biankuangliang welding, forms faced wall light steel frame frame.
Second step：In faced wall light steel frame frame, punching sheet metal is welded, is then intersected in punching sheet metal two sides
Arrange concrete-filled steel tube truss rib, rib both ends are weldingly fixed on faced wall light steel frame frame, so far, form faced wall reinforcing bar
Frame.
Third step：Wallboard formwork for placing is made, concrete is configured, pours R.C. wall board, forms assembled purlin after maintenance
Frame type light steel frame-punching sheet metal-Combined concrete wall.When faced wall assembles, carried out with external structure by connection bolt
Installation connection.
It is a typical case study on implementation of the utility model above, but the implementation of the utility model is without being limited thereto.This
The selection of cited each structure size and material can be chosen according to actual needs in utility model, no longer arrange one by one herein
It lifts.
Claims (7)
1. assembling truss type light steel frame-punching sheet metal-Combined concrete wall, it is characterised in that：Including concrete filled steel tube
Frame columns (1), punching sheet metal (3), concrete-filled steel tube truss rib (4), concrete (5), connect steel pipe concrete frame beam (2)
Connect end plate (6) and connection bolt (7)；
The punching sheet metal (3) is the steel plate to be portalled through punching machine by mould punching on steel plate of the plate thickness no more than 5mm,
The hole heart is not less than the 1/2 of punching sheet metal (3) area away from 50mm, punching area is not less than；
It is respectively welded connection board (6) in the capital of steel pipe concrete frame column (1) and suspension column position, it is pre- in connection board (6)
Bolt hole processed；Steel pipe concrete frame column (1) and steel pipe concrete frame beam (2) are welded, and faced wall light steel frame frame is formed,
Frame interior welds punching sheet metal (3), then in punching sheet metal two sides arranged crosswise concrete-filled steel tube truss rib (4), steel
Pipe concrete truss rib (4) both ends are welded and fixed with faced wall light steel frame frame, so far, form faced wall steel skeleton；Formwork
R.C. wall board (5) are poured, form a kind of assembling truss type light steel frame-punching sheet metal-Combined concrete wall after maintenance；
When assembly, faced wall is attached with external structure by connecting bolt (7).
2. assembling truss type light steel frame according to claim 1-punching sheet metal-Combined concrete wall, feature
It is：The steel pipe concrete frame column (1) and steel pipe concrete frame beam (2) use rectangular or rectangular steel pipe, steel pipe walls
Thickness is not more than 8mm, and steel tube section side length is not less than 50mm, manages interior fill concrete.
3. assembling truss type light steel frame according to claim 1-punching sheet metal-Combined concrete wall, feature
It is：The punching sheet metal (3) is the steel plate for going out round hole, square hole or rectangular opening by mould punching, the thin steel of punching
Plate (3) is arranged in the middle part of wallboard light steel frame frame, while being cast in the middle part of concrete (5).
4. assembling truss type light steel frame according to claim 1-punching sheet metal-Combined concrete wall, feature
It is：The concrete-filled steel tube truss rib (4) is formed using rectangular or rectangular steel pipe fill concrete, and thickness of steel pipe is not more than
5mm, the wall concrete-filled steel tube truss rib (4) and wall steel pipe concrete frame one of punching sheet metal (3) two sides arranged crosswise
It rises, constitutes wallboard truss stress frame；When concrete (5) pours, concrete-filled steel tube truss rib (4) is partly or entirely cast in wall
In plate.
5. assembling truss type light steel frame according to claim 1-punching sheet metal-Combined concrete wall, feature
It is：The concrete (5) pours thickness 40mm~100mm, and strength grade of concrete is C30~C60.
6. assembling truss type light steel frame according to claim 1-punching sheet metal-Combined concrete wall, feature
It is：The steel plate thickness that the connection board (6) uses is not less than 6mm, is machined in connection board and is correspondingly connected with bolt (7)
The bolt hole in aperture.
7. assembling truss type light steel frame according to claim 1-punching sheet metal-Combined concrete wall, feature
It is：The connection bolt (7) is not less than M16, and intensity is not less than 8.8 grades, when faced wall is installed, each connection board (6)
On connection bolt (7) be no less than 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820367947.XU CN208137186U (en) | 2018-03-19 | 2018-03-19 | Assembling truss type light steel frame-punching sheet metal-Combined concrete wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820367947.XU CN208137186U (en) | 2018-03-19 | 2018-03-19 | Assembling truss type light steel frame-punching sheet metal-Combined concrete wall |
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| Publication Number | Publication Date |
|---|---|
| CN208137186U true CN208137186U (en) | 2018-11-23 |
Family
ID=64289664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820367947.XU Active CN208137186U (en) | 2018-03-19 | 2018-03-19 | Assembling truss type light steel frame-punching sheet metal-Combined concrete wall |
Country Status (1)
| Country | Link |
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| CN (1) | CN208137186U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277903A (en) * | 2018-03-19 | 2018-07-13 | 北京工业大学 | Assembling truss type light steel frame-punching sheet metal-Combined concrete wall |
| CN112609823A (en) * | 2020-12-03 | 2021-04-06 | 长安大学 | Steel frame structure internally filled with energy-consuming truss and installation method thereof |
-
2018
- 2018-03-19 CN CN201820367947.XU patent/CN208137186U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277903A (en) * | 2018-03-19 | 2018-07-13 | 北京工业大学 | Assembling truss type light steel frame-punching sheet metal-Combined concrete wall |
| CN108277903B (en) * | 2018-03-19 | 2020-08-21 | 北京工业大学 | Assembled truss type light steel frame-punched thin steel plate-concrete combined wall |
| CN112609823A (en) * | 2020-12-03 | 2021-04-06 | 长安大学 | Steel frame structure internally filled with energy-consuming truss and installation method thereof |
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