CN115233820A - Concrete core tube embedded connection node and construction method thereof - Google Patents
Concrete core tube embedded connection node and construction method thereof Download PDFInfo
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- CN115233820A CN115233820A CN202211095931.5A CN202211095931A CN115233820A CN 115233820 A CN115233820 A CN 115233820A CN 202211095931 A CN202211095931 A CN 202211095931A CN 115233820 A CN115233820 A CN 115233820A
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- embedded
- embedded anchor
- buried
- sleeve
- plate
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- 238000010276 construction Methods 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 61
- 239000010959 steel Substances 0.000 claims abstract description 61
- 238000003466 welding Methods 0.000 claims abstract description 32
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 210000000988 bone and bone Anatomy 0.000 claims description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 2
- 235000017491 Bambusa tulda Nutrition 0.000 claims 2
- 241001330002 Bambuseae Species 0.000 claims 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 2
- 239000011425 bamboo Substances 0.000 claims 2
- 238000009434 installation Methods 0.000 abstract description 3
- 238000009435 building construction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009194 climbing Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Images
Classifications
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
-
- 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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
-
- 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
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4157—Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head
- E04B1/4164—Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head with an adjustment sleeve
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/32—Columns; Pillars; Struts of metal
-
- 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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2418—Details of bolting
Abstract
The invention relates to the technical field of super high-rise building construction, in particular to a concrete core tube embedded connecting node and a construction method thereof; the embedded connecting node comprises a steel rib column, an embedded connecting piece, a sleeve and a steel beam; the embedded connecting piece comprises embedded anchor bars and embedded anchor plates; the sleeve is fixed on the steel rib column, the inner side surface of the sleeve is provided with threads, one end of the embedded anchor bar is connected with the sleeve through the threads, and the other end of the embedded anchor bar is vertically and fixedly connected with the embedded anchor plate; the embedded anchor plate is fixedly connected with the steel beam. The construction method comprises the following steps: and marking the position of the embedded connecting piece, fixing the sleeve, screwing one end of the embedded anchor bar into the sleeve, penetrating the other end of the embedded anchor bar into a through hole of the embedded anchor plate for welding, and fixedly connecting the steel beam. The sleeve is installed on the steel rib column in advance, and the embedded anchor bars are screwed with the sleeve during installation, so that the problem that the inner sides of the embedded anchor bars are not easy to weld is solved, the connection quality of the nodes is enhanced, and the danger is reduced; the outer open section of the perforation is flared, the welding area is large, and the quality is good.
Description
Technical Field
The invention relates to the technical field of super high-rise building construction, in particular to a concrete core tube embedded connecting node and a construction method thereof.
Background
In the construction of a super high-rise building with a steel frame and a concrete core tube structure (containing a steel rib column), the steel rib column is connected with a steel beam through an embedded part.
The traditional embedded construction method of the embedded part is usually cooperative construction of more than two persons, the embedded anchor bars of the embedded part are welded on the flange plates of the steel skeleton column, the construction space of the embedded part on site is very small, the operation of workers is very inconvenient during welding, moreover, installation workers need to carry out high-altitude operation under the cooperation of a tower crane, the operation risk is very large, the operation surface of a welder for welding the anchor bars on a steel column web is very narrow due to the limitation of the flange plates of the cross column, the embedded anchor bars are difficult to be considered at the inner side during welding, great potential safety hazards exist in buildings with higher welding requirements, and the site quality and the safety are difficult to guarantee; and the mounted position of built-in fitting need be measured with the total powerstation, and the measurement process of total powerstation receives the influence of climbing the frame outside the building easily, leads to the installation effectiveness low, and the construction progress is slow.
Meanwhile, according to different design drawings, sometimes the steel beam does not necessarily face the steel reinforced column, the embedded anchor bars need to be welded to the web plate of the steel reinforced column, and the web plate is located inside the steel reinforced column, so that the embedded anchor bars are difficult to weld and cannot be effectively connected with the steel reinforced column, the connection quality of the steel beam and the steel reinforced column is reduced, and accidents are caused.
Disclosure of Invention
The invention provides a concrete core tube embedded connecting node and a connecting method thereof, aiming at the technical problems that the welding construction of embedded connecting pieces in the prior art takes account of the inner sides of embedded anchor bars, and the embedded connecting nodes have high danger and low efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that: a pre-buried connecting node of a concrete core cylinder comprises a steel rib column, a pre-buried connecting piece, a sleeve and a steel beam; the embedded connecting piece comprises embedded anchor bars and embedded anchor plates; the sleeve is fixed on the steel rib column, threads are arranged on the inner side surface of the sleeve, threads are arranged at one end of the embedded anchor bar, one end of the embedded anchor bar is connected with the sleeve through the threads, and the other end of the embedded anchor bar is vertically and fixedly connected with the embedded anchor plate; the embedded anchor plate is fixedly connected with the steel beam.
Preferably, the number of the embedded anchor bars and the number of the sleeves are multiple, and the embedded anchor bars and the sleeves are arranged in two lines along the length direction of the steel rib column; the embedded anchor bars are correspondingly connected with the sleeves one by one.
Preferably, the embedded anchor plate is provided with a plurality of through holes, and the embedded anchor bars penetrate through the through holes one by one and are fixed in the through holes through welding.
Preferably, the perforation comprises a limiting section positioned on the inner side and an outward-opening section positioned on the outer side, and the outward-opening section is in a horn shape with the diameter gradually increased from the inner side to the outer side.
Preferably, the diameter of the perforated limiting section is equal to the diameter of the embedded anchor bar in size.
Preferably, the steel rib column comprises a vertically arranged web plate with a cross-shaped section and flange plates vertically arranged on four side edges of the periphery of the cross-shaped web plate; the sleeve is fixed to the flange plate and/or the web.
The invention also provides a construction method of the pre-buried connecting node of the concrete core cylinder, which is characterized by comprising the following steps of:
marking the position corresponding to the embedded connecting piece on the steel rib column according to a design drawing;
step two, welding and fixing a plurality of sleeves at the marked positions on the steel column in the step one;
screwing one ends of the embedded anchor bars with threads into the sleeves one by one, and penetrating the other ends of the embedded anchor bars into the through holes of the embedded anchor plates and welding and fixing the embedded anchor bars;
and fourthly, fixedly connecting a steel beam on one surface of the embedded anchor plate opposite to the embedded anchor bars.
Preferably, in the second step, the sleeves are arranged in two rows along the length direction of the steel reinforced column; if the position marked on the steel rib column in the step one is completely positioned on the flange plate, welding two rows of sleeves on the flange plate; if the positions marked on the steel rib columns in the step one are crossed with the flange plates and the web plates, one row of the two rows of sleeves is welded on the flange plates, and the other row of sleeves is welded on the web plates; and if the positions marked on the steel reinforced columns in the step one are completely positioned on the web plate, welding the two rows of sleeves on the web plate.
Preferably, when the through hole of the embedded anchor plate is welded with the embedded anchor bar in the third step, a gap between the embedded anchor bar and the horn-shaped external opening section of the through hole is a welding area.
Preferably, when the through hole of the embedded anchor plate is welded with the embedded anchor bar in the third step, one end of the embedded anchor bar extending into the through hole is flush with the outer side surface of the embedded anchor plate.
Compared with the prior art, the invention has the advantages and positive effects that: (1) The sleeve is installed on the steel rib column in advance, threads are formed in one end of the embedded anchor bar, and the embedded anchor bar and the sleeve are screwed tightly when the embedded anchor bar is installed at high altitude, so that the problem that the inner side of the embedded anchor bar is not easy to weld is solved, the connection quality of the embedded connection node is enhanced, and the construction risk is reduced; (2) The limiting section of the through hole limits the movement of the embedded anchor bar in the vertical and horizontal directions, the outer opening section is flared outwards and can be gradually welded from the inner side to the outer side during welding, the welding area is large, and the welding quality is good; (3) The welding area of the embedded anchor bars and the outward-opening section is located on the outer side of the embedded anchor plate, and the problem that the part, located on the inner side, of the welding area of the embedded anchor bars and the embedded anchor plate in the traditional welding mode is not easy to weld is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced,
FIG. 1 is a top sectional view of a pre-buried connection node;
FIG. 2 is a schematic front view of a pre-buried connection node;
FIG. 3 is a side cross-sectional view of an embedded anchor plate;
fig. 4 is a front view of the embedded anchor plate.
Description of the reference numerals:
1-a steel rib column, 11-a web plate and 12-a flange plate;
2-pre-buried connecting piece, 21-pre-buried anchor bar, 22-pre-buried anchor plate, 23-perforation, 24-limiting section and 25-outward opening section;
3-a sleeve;
4-steel beam.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
Example 1
The invention is further explained by combining the attached figures 1-4, and the embedded connecting node of the concrete core tube comprises a steel rib column 1, an embedded connecting piece 2, a sleeve 3 and a steel beam 4; the embedded connecting piece 2 comprises embedded anchor bars 21 and embedded anchor plates 22; the sleeve 3 is fixed on the steel reinforced column 1, the inner side surface of the sleeve 3 is provided with threads, one end of the embedded anchor bar 21 is connected with the sleeve 3 through threads, and the other end of the embedded anchor bar 21 is vertically and fixedly connected with the embedded anchor plate 22; the embedded anchor plate 22 is fixedly connected with the steel beam 1.
A plurality of embedded anchor bars 21 and sleeves 3 are arranged in two rows along the length direction of the steel reinforced column 1; the embedded anchor bars 21 are correspondingly connected with the sleeves 3 one by one.
The pre-buried anchor plate 22 is provided with a plurality of through holes 23, and a plurality of pre-buried anchor bars 21 pass through the plurality of through holes 23 one by one and are fixed in the through holes 23 through welding.
The through hole 23 comprises a limiting section 24 positioned at the inner side and an outward opening section 25 positioned at the outer side, and the outward opening section 25 is in a trumpet shape with the diameter gradually increasing from the inner side to the outer side.
The diameter of the limiting section 24 of the through hole 23 is equal to the diameter of the embedded anchor bar 21.
The steel rib column 1 comprises a web plate 11 which is vertically arranged and has a cross-shaped section, and flange plates 12 which are vertically arranged on four side edges of the periphery of the cross-shaped web plate 11; the sleeve 3 is fixed to the flange plate 12 and/or the web 11.
Example 2
A construction method of a pre-buried connecting node of a concrete core cylinder comprises the following steps:
marking the position corresponding to the embedded connecting piece 2 on the steel reinforced column 1 according to a design drawing;
step two, fixing a plurality of sleeves 3 at the marked positions on the steel bone column 1 in the step one;
screwing one threaded ends of the embedded anchor bars 21 into the sleeves 3 one by one, and penetrating the other ends of the embedded anchor bars into the through holes 23 of the embedded anchor plates 22 and welding and fixing the embedded anchor bars;
and fourthly, fixedly connecting the steel beam 1 on the surface of the embedded anchor plate 22 opposite to the embedded anchor bar 21.
By utilizing the pre-installed sleeve 3 and then arranging the threads at one end of the embedded anchor bar 21, when the embedded anchor bar 21 is installed at high altitude, the embedded anchor bar 21 and the sleeve 3 are assembled, the problem that the inner side of the embedded anchor bar 21 is not easy to weld is solved, the connection quality of the embedded connection node is enhanced, the time is saved, and the construction danger is reduced.
In the second step, the plurality of sleeves 3 are arranged into two rows along the length direction of the steel reinforced column 1;
if the position marked on the steel reinforced column 1 in the step one is completely positioned on the flange plate 12, welding two rows of sleeves 3 on the flange plate 12;
if the positions marked on the steel reinforced column 1 in the step one are crossed with the flange plates 12 and the web plates 11, one row of the two rows of sleeves 3 is welded on the flange plates 12, and the other row of sleeves is welded on the web plates 11;
if the position marked on the steel column 1 in the first step is completely positioned on the web 11, welding two rows of sleeves 3 on the web 11.
And in the third step, when the through hole 23 of the embedded anchor plate 22 is welded with the embedded anchor bar 21, a gap between the embedded anchor bar 21 and the horn-shaped external opening section 25 of the through hole 23 is a welding area.
The through hole 23 is divided into a limiting section 24 and an outward opening section 25, the embedded anchor bar 21 is firstly inserted into the limiting section 24 to limit the movement of the embedded anchor bar in the vertical and horizontal directions, when the embedded anchor bar enters the outward opening section 25, the outward opening section 25 is flared outwards, and the embedded anchor bar 21 can be gradually welded to the outer side from the inner side of the outward opening section 25 during welding, so that the welding area is large, the problem that through holes with the same diameter can only weld an arc area where the hole at the outermost side is contacted with the embedded anchor bar 21 is avoided, and the welding quality is good;
meanwhile, the welding area of the embedded anchor bars 21 and the external opening section 25 is positioned outside the embedded anchor plate 22, so that the problem that the part of the welding area of the embedded anchor bars 21 and the embedded anchor plate 22 which are welded in the traditional way, which is positioned inside, is not easy to weld is solved.
When the through hole 23 of the embedded anchor plate 22 is welded with the embedded anchor bar 21 in the third step, one end of the embedded anchor bar 21 extending into the through hole 23 is flush with the outer side surface of the embedded anchor plate 22.
The above embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above embodiments with modifications and variations to the disclosed technical content to apply the equivalent embodiments in other fields, but any simple modification and equivalent variation made on the above embodiments according to the technical spirit of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. A pre-buried connecting node of a concrete core tube is characterized by comprising a steel rib column (1), a pre-buried connecting piece (2), a sleeve (3) and a steel beam (4); the embedded connecting piece (2) comprises embedded anchor bars (21) and embedded anchor plates (22);
the sleeve (3) is fixed on the steel reinforced column (1), the inner side surface of the sleeve (3) is provided with threads, one end of the embedded anchor bar (21) is connected with the sleeve (3) through threads, and the other end of the embedded anchor bar is vertically and fixedly connected with the embedded anchor plate (22);
the embedded anchor plate (22) is fixedly connected with the steel beam (1).
2. The concrete core tube embedded connecting joint as claimed in claim 1, wherein a plurality of embedded anchor bars (21) and sleeves (3) are arranged in two rows along the length direction of the steel reinforced column (1); the embedded anchor bars (21) are correspondingly connected with the sleeves (3) one by one.
3. The pre-buried connected node of a concrete core section of thick bamboo of claim 2, characterized in that, pre-buried anchor plate (22) is equipped with a plurality of perforation (23), a plurality of pre-buried anchor bars (21) pass through a plurality of perforation (23) one by one, and pass through welded fastening in perforation (23).
4. The pre-buried connection node of a concrete core section of thick bamboo according to claim 3, characterized in that, perforation (23) include be located inboard spacing section (24) and outside open section (25) of outside, outside open section (25) are in the loudspeaker form of inside to outside direction diameter increase gradually.
5. The concrete core tube embedded connection joint as recited in claim 4, wherein the diameter of the limiting section (24) of the through hole (23) is equal to the diameter of the embedded anchor bar (21).
6. The concrete core tube embedded connection joint as recited in claim 2, wherein the steel skeleton column (1) comprises a vertically arranged web plate (11) with a cross-shaped section, and flange plates (12) vertically arranged on four side edges of the periphery of the cross-shaped web plate (11); the sleeve (3) is fixed to the flange plate (12) and/or the web (11).
7. A construction method for pre-buried connecting nodes of a concrete core tube is characterized by comprising the following steps:
marking the position corresponding to the embedded connecting piece (2) on the steel reinforced column (1) according to a design drawing;
step two, fixing a plurality of sleeves (3) at the marked positions on the steel bone column (1) in the step one;
screwing one ends of the embedded anchor bars (21) with threads into the sleeves (3) one by one, and penetrating the other ends into through holes (23) of the embedded anchor plates (22) and welding and fixing the ends;
and fourthly, fixedly connecting the steel beam (1) on one surface of the embedded anchor plate (22) opposite to the embedded anchor bar (21).
8. The construction method of the pre-buried connecting node of the concrete core tube according to claim 7, wherein in the second step, the plurality of sleeves (3) are arranged in two rows along the length direction of the steel reinforced column (1);
if the positions marked on the steel reinforced column (1) in the first step are completely positioned on the flange plates (12), welding two rows of sleeves (3) on the flange plates (12);
if the marked position on the steel reinforced column (1) in the first step is crossed with the flange plate (12) and the web plate (11), one row of the two rows of sleeves (3) is welded on the flange plate (12), and the other row of sleeves is welded on the web plate (11);
if the positions marked on the steel reinforced column (1) in the first step are completely positioned on the web (11), the two rows of sleeves (3) are welded on the web (11).
9. The construction method of the pre-buried connecting node of the concrete core tube according to claim 7, wherein when the through hole (23) of the pre-buried anchor plate (22) is welded with the pre-buried anchor bar (21) in the third step, a gap between the pre-buried anchor bar (21) and the horn-shaped outer opening section (25) of the through hole (23) is a welding area.
10. The construction method of the pre-buried connecting node of the concrete core cylinder according to claim 9, characterized in that when the through hole (23) of the pre-buried anchor plate (22) is welded with the pre-buried anchor bar (21) in the third step, one end of the pre-buried anchor bar (21) extending into the through hole (23) is flush with the outer side surface of the pre-buried anchor plate (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211095931.5A CN115233820A (en) | 2022-09-08 | 2022-09-08 | Concrete core tube embedded connection node and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211095931.5A CN115233820A (en) | 2022-09-08 | 2022-09-08 | Concrete core tube embedded connection node and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115233820A true CN115233820A (en) | 2022-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211095931.5A Pending CN115233820A (en) | 2022-09-08 | 2022-09-08 | Concrete core tube embedded connection node and construction method thereof |
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|---|---|---|---|---|
| KR20100066805A (en) * | 2008-12-10 | 2010-06-18 | (주)엠씨에스공법 | Steel-concrete composite crossbeam having wire mesh and construction method using the same |
| CN202755460U (en) * | 2012-08-27 | 2013-02-27 | 中国核工业华兴建设有限公司 | Embedded part |
| CN109469212A (en) * | 2018-09-22 | 2019-03-15 | 中核能源科技有限公司 | For high temperature gas cooled reactor containment reinforcing bar dense part sleeve combination type built-in fitting |
| CN210827867U (en) * | 2019-08-08 | 2020-06-23 | 武汉华科永信建筑工程有限公司 | Steel beam concrete column rigid connection structure |
| CN211172412U (en) * | 2019-09-17 | 2020-08-04 | 中南建筑设计院股份有限公司 | Connecting joint of beam main rib and cross steel rib column |
| CN211774633U (en) * | 2020-02-19 | 2020-10-27 | 天元建设集团有限公司 | Outer frame roof beam and concrete core section of thick bamboo inner steel bone post connected node in super high-rise structure |
| CN115012532A (en) * | 2022-06-09 | 2022-09-06 | 中建八局西北建设有限公司 | Steel rib directly connected stiffening member assembly type embedded assembly and construction method thereof |
-
2022
- 2022-09-08 CN CN202211095931.5A patent/CN115233820A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100066805A (en) * | 2008-12-10 | 2010-06-18 | (주)엠씨에스공법 | Steel-concrete composite crossbeam having wire mesh and construction method using the same |
| CN202755460U (en) * | 2012-08-27 | 2013-02-27 | 中国核工业华兴建设有限公司 | Embedded part |
| CN109469212A (en) * | 2018-09-22 | 2019-03-15 | 中核能源科技有限公司 | For high temperature gas cooled reactor containment reinforcing bar dense part sleeve combination type built-in fitting |
| CN210827867U (en) * | 2019-08-08 | 2020-06-23 | 武汉华科永信建筑工程有限公司 | Steel beam concrete column rigid connection structure |
| CN211172412U (en) * | 2019-09-17 | 2020-08-04 | 中南建筑设计院股份有限公司 | Connecting joint of beam main rib and cross steel rib column |
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| CN115012532A (en) * | 2022-06-09 | 2022-09-06 | 中建八局西北建设有限公司 | Steel rib directly connected stiffening member assembly type embedded assembly and construction method thereof |
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