KR20160140121A - Steel-concrete composite frame by monolithic placement and construction method thereof - Google Patents
Steel-concrete composite frame by monolithic placement and construction method thereof Download PDFInfo
- Publication number
- KR20160140121A KR20160140121A KR1020150076293A KR20150076293A KR20160140121A KR 20160140121 A KR20160140121 A KR 20160140121A KR 1020150076293 A KR1020150076293 A KR 1020150076293A KR 20150076293 A KR20150076293 A KR 20150076293A KR 20160140121 A KR20160140121 A KR 20160140121A
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- steel plate
- concrete
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- steel
- composite
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
-
- 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
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
- E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/36—Columns; Pillars; Struts of materials not covered by groups E04C3/32 or E04C3/34; of a combination of two or more materials
Abstract
The present invention relates to a method of constructing a steel-concrete composite frame and a construction method thereof, which is advantageous for vibration control without any concrete paste or dust, and which is simple in construction and air-fast.
The steel-concrete composite frame according to the present invention includes a plurality of steel-concrete composite frames installed in a plurality of rows so as to be spaced apart from each other by a predetermined distance. A steel plate assembled composite girder comprising a lower flange, a pair of webs, and an upper flange, which are installed in a plurality of rows so that a plurality of these are seated on the upper end of the steel column; A steel plate assembled composite beam which is installed between adjacent steel plate assembled composite girders so that an end portion thereof is coupled to a web side of the steel plate assembled composite girder and is composed of a lower flange, a pair of webs, and an upper flange; And concrete that is integrally filled in the steel pipe column, steel plate assembled composite girder, and steel plate assembled composite beam; Wherein a concrete injection hole is formed in one of the plurality of steel plate assembling composite girders or one of the plurality of steel plate assembling composite beams and is seated on an upper end of a steel pipe column of the steel plate assembling composite girder And a concrete flow hole is formed in each of the webs to which the ends of the lower flange and the steel plate assembled composite beam are coupled.
Description
In the present invention, a steel plate assembled beam is installed so that the webs are coupled to each other between the steel plate assembling composite girders which are seated on the upper end of the steel pipe column, and the column-girder-beam concrete is laid through one concrete injection hole, The present invention relates to a method of constructing a steel-concrete composite frame and a construction method thereof.
Clean room, which is the core of semiconductor production facilities, is a facility that produces ultra-high precision products. Dust and vibration control is very important.
Fig. 1 is a perspective view of a clean room, which is made up of one module composed of a
Conventional clean room frame consists of RC, S, PC and so on.
The double RC type has the advantage of cheapest construction cost and favorable vibration, but it has a disadvantage that the construction period is long and precision is low and it is difficult to cope with the design change. In addition, concrete paste residues are generated during construction, and the concrete is generally applied during use, but when concrete damage is done, concrete is dropped and is vulnerable to dust control.
In addition, S group has short construction period, excellent precision, and easy to cope with design change, but it has disadvantage that it is disadvantageous to vibration and construction cost is high.
In addition, the PC group has advantages such as short construction period, excellent precision, advantage of vibration rather than steel frame, and no dust accumulation, compared with RC type. However, treatment of joints such as grouting is difficult, cost increases when design change occurs, This takes a long time.
However, in the semiconductor market environment where the new product life cycle is getting shorter, clean management, short construction period, and quick response to design changes are essential.
Therefore, it is in urgent need of a new frame construction method that can control vibration and dust, have excellent workability, and can achieve air saving effect while adopting the merits of these frame structures and eliminating disadvantages from existing clean room frames.
The present invention adopts only the advantages of the existing clean room frame to provide a concrete-frame composite frame and its construction method which is advantageous for vibration control without any concrete paste or dust at all, .
According to a preferred embodiment of the present invention, a plurality of steel tube columns are installed in a plurality of rows so as to be spaced apart from each other by a predetermined distance, A pair of webs vertically disposed on upper portions of both ends of the lower flange, an upper flange covering the upper ends of the pair of webs and closing the inside of the upper flanges, A steel plate assembly synthetic girder comprising: A pair of webs provided in a vertical direction on upper portions of both ends of the lower flange, and a pair of webs provided on both sides of the lower flange, A steel plate assembled composite beam consisting of an upper flange covering the upper end and closing the inside; And concrete that is integrally filled in the steel pipe column, steel plate assembled composite girder, and steel plate assembled composite beam; Wherein a concrete injection hole is formed in one of the plurality of steel plate assembling composite girders or one of the plurality of steel plate assembling composite beams and is seated on an upper end of a steel pipe column of the steel plate assembling composite girder, And a concrete flow hole is formed in each of the webs to which the ends of the lower flange and the steel plate assembled composite beam are coupled, respectively.
According to another preferred embodiment of the present invention, a concrete injection port is provided at an upper portion of the concrete injection hole, and a through hole communicating with the concrete injection hole is formed at the center of the concrete injection port. The fixed plate is detachably coupled to the upper flange. And a connecting pipe communicating with the through hole formed in the upper portion of the fixing plate.
According to another preferred embodiment of the present invention, a first coupling hole is formed in the periphery of the through hole formed in the fixing plate of the concrete injection hole, a second coupling hole is formed in the upper flange at a position corresponding to the first coupling hole, And a bolt member is inserted into the first and second coupling holes and is fastened to the nut member so that the concrete injection port is detachably coupled to the upper flange. Provides concrete-framed steel-concrete composite frame.
According to another preferred embodiment of the present invention, an air hole is formed through an upper flange of a steel plate assembled composite girder and a steel plate assembled composite beam installed at the outermost periphery.
According to another preferred embodiment of the present invention, the air hole is provided with an exhaust pipe fastener at an upper portion thereof. The exhaust pipe fastener has a through hole communicating with the air hole at the center thereof. The through hole is removably coupled to the upper flange. A connection pipe connected to the through hole formed in the upper part of the plate, and a discharge pipe connected to the connection pipe at the upper part.
According to another preferred embodiment of the present invention, a first coupling hole is formed in the periphery of the through hole formed in the fixing plate of the discharge pipe fastener, a second coupling hole is formed in the upper flange at a position corresponding to the first coupling hole, A nut member is fixedly coupled to the lower portion of the second coupling hole so that the bolt member is inserted into the first coupling hole and the second coupling hole and is fastened to the nut member so that the outlet pipe fastener is detachably coupled to the upper flange. Provides concrete-framed steel-concrete composite frame.
According to another preferred embodiment of the present invention, the steel plate assembled composite beam is installed on a bracket coupled to a side of a steel plate assembled synthetic girder and is coupled to a steel plate assembled composite girder, wherein the bracket has a lower flange, Wherein the upper flange comprises a pair of webs and an upper flange covering the upper ends of the webs to close the inside of the pair of webs, and the upper flange is configured to be able to open or close part or all of the upper flange. Provides a concrete composite frame.
According to another preferred embodiment of the present invention, a work hole is formed in the web of the steel plate assembled composite beam, and the work hole is closed by a cover plate detachably coupled to the web. And provides a composite frame.
According to another aspect of the present invention, there is provided a method of constructing a steel-concrete composite frame, the method comprising: (a) installing the steel tube columns in a plurality of columns; (b) installing a steel plate assembled composite girder on the upper part of the steel pipe column in a plurality of rows so that the concrete flow hole of the lower flange is located at the upper end of the steel pipe column; (c) installing the steel plate assembled composite beam between the steel plate assembled composite girders so that the ends of the steel plate assembled composite beams are coupled to the positions of the concrete flow holes formed in the web of the steel plate assembled composite girder; (D) injecting high-strength concrete into the concrete injection hole to fill the steel plate-assembled composite girder, the steel plate-assembled composite beam, and the high-strength concrete in the steel pipe column; The present invention provides a method of constructing a composite frame of a steel-concrete composite structure.
According to another preferred embodiment of the present invention, in the step (d), a lower support member is installed under the steel plate assembled composite girder or steel plate assembled composite beam in which the concrete injection hole is installed before the high fluidity concrete injection. Provides a method of constructing a poured steel-concrete composite frame.
The present invention has the following effects.
First, since the steel plate assembled composite beam is installed so that the webs are mutually coupled between the steel plate assembled composite girders which are seated on the upper end of the steel pipe columns, the installation of the beams is very simple and the girders of multiple spans can be continuously produced, It is convenient to construct.
Second, the concrete injected through one concrete injection hole can be moved to the neighboring member through the concrete flow hole, so that the concrete can be integrally installed in the whole frame. Therefore, it is easy to install column-girder-beam concrete and movement of concrete injection pipe is unnecessary, thereby improving workability and shortening of air.
Third, steel pipe columns, steel plate assembled composite girder and steel plate assemblies with closed cross section. Concrete is placed inside the composite beam, so it is convenient to carry and assemble the members. In addition, there is no fear that concrete paste will fall out during construction, concrete dust is not generated during use, and vibration control is advantageous.
Fourth, it is possible to reduce the vibration level of the RC tank by the low construction cost close to the RC tank, and it is effective in the dust control, and it is possible to construct the frame such as the clean room within the short construction period of the S tank level.
Fifth, when forming an air hole in the upper flange of the steel plate assembled composite girder and the steel plate assembled composite beam installed at the outermost periphery, it can be confirmed whether the concrete is pushed tightly to the outermost member.
Sixthly, when the upper flange of the bracket to which the steel plate assembled composite beams are coupled can be detachably coupled to the side of the steel plate assembled composite girder, it can be easily confirmed that the concrete is filled tightly at the joint portion between the girder and the beam.
1 is a perspective view of a clean room.
Fig. 2 is a plan view of a composite frame of a steel-concrete structure with concrete according to the present invention. Fig.
3 is a front view showing the concept of a column-beam concrete installation in the present invention.
FIG. 4 is a perspective view showing a coupling relation of a column-girder-beam in the present invention; FIG.
5 is a perspective view showing a coupling relationship of a concrete injection port.
6 is a side view showing the coupling relationship of the concrete injection port.
7 is a side view showing the connection state of the concrete injection port and the hopper.
8 is a plan view showing an installation position of an air hole;
9 is a side view showing a coupling relationship of the discharge pipe fixture.
10 is a plan view showing a mounting position of the bracket;
11 is a perspective view showing a girder-beam coupled by a bracket;
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.
FIG. 2 is a plan view of a steel-concrete composite frame according to the present invention, FIG. 3 is a front view showing the concept of installing a column-beam concrete in the present invention, and FIG. 4 is a cross- Fig.
As shown in FIGS. 2 to 4, the steel-concrete composite frame according to the present invention includes a plurality of steel-concrete composite frames installed in a plurality of rows spaced apart from each other by a predetermined distance, A pair of
In other words, the concrete-assembled steel-concrete composite frame of the present invention is composed of a
Therefore, by adopting the advantages of RC and S, it is possible to realize vibration reduction of RC tank level with low construction cost close to RC tank, effective in dust control, and to construct a frame of clean room in a short construction period of S level have. Also, it is simple to construct beam-column joints and easy to pour concrete, so that it is easy to construct and there is no need for a construction material to support the formwork.
A plurality of the
A plate having a through hole at the center so as to communicate with the
The plate can be bolted to the
The
The steel plate assembling
The steel plate assembling
Therefore, since the steel plate assembled
4, a
The steel plate assembled
The steel plate assembling
The
The
The
The
Therefore, when concrete is injected through the concrete injection holes 231 formed in the
At this time, since the
Further, since only one
4 and the like, a
2 to 3, a
Therefore, it is possible to drastically shorten the air because the concrete can be integrally installed to the column member through the beam member, and when the high fluidity concrete is used, it is more effective in the flow of concrete and shortening of the air.
FIG. 5 is a perspective view showing the coupling relation of the concrete injection port, FIG. 6 is a side view showing the coupling relation of the concrete injection port, and FIG. 7 is a side view showing the connection state of the concrete injection port and the hopper.
5, a
That is, the
The
The
5, the concrete is injected into the steel plate assembled
5 and 6, a
A bolt member B is provided so as to penetrate through the
The nut member N can be welded to the lower portion of the
Therefore, after the concrete pouring is completed, the bolt member B is released and the
5 shows the case where the
The washer can be positioned between the fixing
7, the lower end of the
8 is a plan view showing an installation position of the air holes.
8,
The air holes 233 and 333 discharge the air in the synthetic frame to the outside to tightly fill the concrete inside the member.
At this time, when the concrete is tightly filled up to the outermost steel plate assembling
The positions of the air holes 233 and 333 formed in the
9 is a side view showing a coupling relationship of the discharge pipe fastener.
9, an
That is, the
The
The
9, the concrete is sufficiently filled in the member, and then the concrete passes through the
The discharge pipe (73) may be made of a PVC material or the like, and it is preferable that the discharge pipe (73) is made of a transparent material as much as possible in order to easily confirm whether or not the concrete flows out.
The discharge pipe (73) can be attached to and supported by the side surface of the mega column (10).
9 shows a state in which the
9, a first
The first
The nut member N may be welded to the lower portion of the
Therefore, after the concrete pouring is completed, the bolt member (B) is released and the discharge pipe fixture (7) is removed from the steel plate assembling composite girder (2).
9 shows the case where the
The washer can be positioned between the fixing
Fig. 10 is a plan view showing the mounting position of the bracket, and Fig. 11 is a perspective view showing the girder-beam coupled by the bracket.
4, 10, 11, and so on, the steel plate assembled
The
The
The
The
In the plan view shown in Fig. 10, the installation position of the
11, a
When the steel plate assembled
Therefore, the
After the steel plate
Next, a method for constructing a concrete-framed steel-concrete composite frame according to the present invention relates to a method for constructing a concrete-framed composite concrete-concrete frame of the present invention described above with reference to FIG. 2 to FIG.
A method of constructing a concrete-framed composite frame of a concrete structure according to the present invention comprises the steps of: (a) installing the
As described above, in addition to the steel plate assembling
In addition, a
The
In one embodiment of the
The role and specific coupling relationship of each component in the method of constructing the concrete-frame composite frame of the present invention are as described in the composite concrete frame of the present invention.
1: Steel pipe column
2: Steel plate assembly composite girder
21: Lower flange
211: Concrete flow ball
22: web
221: Concrete flow ball
23: Upper flange
231: Concrete injection hole
232: second engaging hole
233: Air hole
234: second engaging hole
3: steel plate assembled composite beam
31: Lower flange
32: web
321: Operation hole
322: Cover plate
33: Upper flange
333: Air hole
4: Concrete
5: Concrete injection hole
51: Fixing plate
511: Through-hole
512: first engaging hole
52: Connecting pipe
6: Hopper
61: Discharge tube
62: Injection tube
63: Clamp
7:
71: Fixing plate
711: Through hole
712: first engaging hole
72: connecting pipe
73: discharge pipe
8: Bracket
81: Lower flange
82: web
83: Upper flange
9: Lower support member
10: Mega column
B: Bolt member
N: Nut member
Claims (10)
A pair of webs 22 vertically provided on both ends of both ends of the lower flange 21, a pair of upper and lower flanges 21 and 22, A steel plate assembling composite girder (2) composed of an upper flange (23) covering the upper end of the web (22) and closing the inside thereof;
The lower flange 31 and the lower flange 31 are provided between adjacent steel plate assembling composite girders 2 so that the end portions are joined to the side of the web 22 of the steel plate assembling composite girder 2. The lower flange 31, A steel plate assembled composite beam 3 composed of a pair of webs 32 provided in a vertical direction and an upper flange 33 covering an upper end of the pair of webs 32 and closing the inside thereof; And
A concrete 4 which is integrally filled in the steel pipe column 1, the steel plate assembling composite girder 2 and the steel plate assembled composite beam 3; Respectively,
A concrete injection hole (231) is formed through the upper flange (23, 33) of any one of the plurality of steel plate assembling composite girders (2) or the plurality of steel plate assembled composite beams (3)
The lower flange 21 of the portion of the steel plate assembling composite girder 2 to be seated on the upper end of the steel pipe column 1 and the web 22 to which the end portion of the steel plate assembled composite beam 3 is engaged are provided with the concrete flow holes 211, 221) are formed in the through-hole, respectively.
A concrete injection port (5) is provided at an upper portion of the concrete injection hole (231)
The concrete injection port 5 is formed with a through hole 511 communicating with the concrete injection hole 231 at the center thereof and includes a fixing plate 51 detachably coupled to the upper flange 23, And a connecting pipe (52) connected to the through hole (511) formed in an upper portion of the frame (511).
A first coupling hole 512 is formed around the through hole 511 formed in the fixing plate 51 of the concrete injection hole 5 and an upper flange 23 at a position corresponding to the first coupling hole 512, A nut member N is fixedly coupled to the lower portion of the upper flange 23 at a lower portion of the second coupling hole 232 so as to connect the bolt member B to the first coupling hole 232. [ And the concrete injection port (5) is detachably coupled to the upper flange (23) by being inserted into the first coupling hole (512) and the second coupling hole (232) frame.
Wherein air holes 233 and 333 are formed in the upper flanges 23 and 33 of the steel plate assembled composite girder 2 and the steel plate assembled composite beam 3 installed at the outermost portion. Composite frames.
An outlet pipe fixture (7) is installed on the upper part of the air holes (233, 333)
The discharge pipe fixture 7 includes a fixing plate 71 formed at the center thereof with a through hole 711 communicating with the air holes 233 and 333 and detachably coupled to the upper flanges 23 and 33, And a discharge pipe (73) coupled to an upper portion of the connecting pipe (72), the connecting pipe (72) being connected to the through hole (711) formed in the upper portion of the plate (71) - Concrete composite frame.
A first engaging hole 712 is formed around the through hole 711 formed in the fixing plate 71 of the discharge pipe fixture 7 and an upper flange 23 at a position corresponding to the first engaging hole 712, A nut member N is fixedly coupled to a lower portion of the second coupling hole 234 of the upper flange 23 so that the bolt member B is engaged with the first coupling hole 234, Is inserted into the first flange (712) and the second coupling hole (234) and is fastened to the nut member (N), so that the discharge pipe fastener (7) is detachably engaged with the upper flange (23). frame.
The steel plate assembled composite beam 3 is installed on the bracket 8 coupled to the side of the steel plate assembled composite girder 2 and is coupled to the steel plate assembled composite girder 2. The bracket 8 is connected to the lower flange 81, A pair of webs 82 provided vertically above both ends of the lower flange 81 and an upper flange 83 covering the upper ends of the pair of webs 82 to close the inside of the pair of webs 82, Wherein the flange (83) is configured to be able to open or close part or all of the frame.
A work hole 321 is formed in the web 32 of the steel plate assembled composite beam 3 and the work hole 321 is closed by a cover plate 322 which is detachably coupled to the web 32 It is characterized by concrete cast iron frame - concrete composite frame.
(a) installing the steel tube columns 1 in a plurality of rows;
(b) installing a steel plate assembled composite girder (2) in a plurality of columns on a steel pipe column (1) such that a concrete flow hole (211) of a lower flange (21) is located at an upper end of the steel pipe column (1);
(c) Between the steel plate assembled composite girder 2 and the end of the composite steel composite beam 3 at the position of the concrete flow hole 221 formed in the web 22 of the steel plate assembled composite girder 2, Installing a steel plate assembled composite beam (3); And
(d) injecting high-fluid concrete into the concrete injection hole 231 to fill the steel plate assembling composite girder 2, the steel plate assembling composite beam 3, and the steel pipe column 1 with high fluidity concrete; Wherein the reinforcing member is made of a synthetic resin.
The lower support member 9 is installed under the steel plate assembling composite girder 2 or the steel plate assembled composite beam 3 where the concrete injection hole 231 is installed before the high fluidity concrete injection in the step (d) A method of constructing a composite frame of a steel - concrete concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150076293A KR101693264B1 (en) | 2015-05-29 | 2015-05-29 | Steel-concrete composite frame by monolithic placement and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150076293A KR101693264B1 (en) | 2015-05-29 | 2015-05-29 | Steel-concrete composite frame by monolithic placement and construction method thereof |
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| Publication Number | Publication Date |
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| KR20160140121A true KR20160140121A (en) | 2016-12-07 |
| KR101693264B1 KR101693264B1 (en) | 2017-01-05 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110306725A (en) * | 2019-04-19 | 2019-10-08 | 北京工业大学 | A kind of cast-in-place package Honeycomb Beam of holes in soffit |
| KR20200089793A (en) * | 2019-01-17 | 2020-07-28 | 단국대학교 산학협력단 | Non-welding beam-to-column connection structure with reinforcing plate and through bolt |
| CN112982181A (en) * | 2021-02-05 | 2021-06-18 | 中交第三公路工程局有限公司 | Construction method for steel-concrete combined section of through-type steel box continuous arch bridge |
| KR102314861B1 (en) * | 2020-05-08 | 2021-10-18 | 염경수 | Composite girder consisting of couple channels without bottom steel plate |
| KR102459419B1 (en) * | 2021-06-22 | 2022-10-27 | 삼성엔지니어링 주식회사 | Steel plate type composite girder, hybrid junction framework and method of constructing building |
| KR20220169678A (en) * | 2021-06-21 | 2022-12-28 | (주)센벡스 | Hybrid frame |
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| JPH0633517A (en) * | 1992-07-10 | 1994-02-08 | Maeda Corp | Joint part structure of filling type steel pipe concrete column and beam and joining method therefor |
| JPH11269990A (en) * | 1998-03-25 | 1999-10-05 | Sato Benec Co Ltd | Structure of steel pipe for filling concrete |
| JP2001020523A (en) * | 1999-07-07 | 2001-01-23 | Taisei Corp | Concrete press-in device and concrete guide device |
| KR20130103420A (en) * | 2012-03-09 | 2013-09-23 | 이창남 | Structure for clean room using composite beam |
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| JPH0633517A (en) * | 1992-07-10 | 1994-02-08 | Maeda Corp | Joint part structure of filling type steel pipe concrete column and beam and joining method therefor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20200089793A (en) * | 2019-01-17 | 2020-07-28 | 단국대학교 산학협력단 | Non-welding beam-to-column connection structure with reinforcing plate and through bolt |
| CN110306725A (en) * | 2019-04-19 | 2019-10-08 | 北京工业大学 | A kind of cast-in-place package Honeycomb Beam of holes in soffit |
| KR102314861B1 (en) * | 2020-05-08 | 2021-10-18 | 염경수 | Composite girder consisting of couple channels without bottom steel plate |
| CN112982181A (en) * | 2021-02-05 | 2021-06-18 | 中交第三公路工程局有限公司 | Construction method for steel-concrete combined section of through-type steel box continuous arch bridge |
| KR20220169678A (en) * | 2021-06-21 | 2022-12-28 | (주)센벡스 | Hybrid frame |
| KR102459419B1 (en) * | 2021-06-22 | 2022-10-27 | 삼성엔지니어링 주식회사 | Steel plate type composite girder, hybrid junction framework and method of constructing building |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101693264B1 (en) | 2017-01-05 |
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