CN115341701B - Hanging formwork construction method for high-altitude overhanging steel bar truss floor support plate - Google Patents
Hanging formwork construction method for high-altitude overhanging steel bar truss floor support plate Download PDFInfo
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- CN115341701B CN115341701B CN202210997002.7A CN202210997002A CN115341701B CN 115341701 B CN115341701 B CN 115341701B CN 202210997002 A CN202210997002 A CN 202210997002A CN 115341701 B CN115341701 B CN 115341701B
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- overhanging
- bar truss
- floor support
- support plate
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 318
- 239000010959 steel Substances 0.000 title claims abstract description 318
- 238000010276 construction Methods 0.000 title claims abstract description 25
- 238000009415 formwork Methods 0.000 title claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000003466 welding Methods 0.000 claims abstract description 36
- 229910052742 iron Inorganic materials 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 238000004134 energy conservation Methods 0.000 abstract 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/17—Floor structures partly formed in situ
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
- E04G11/50—Girders, beams, or the like as supporting members for forms
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention belongs to the technical field of mounting of assembled steel structure building carrier plates, and particularly relates to a high-altitude overhanging steel bar truss building carrier plate hanging die construction method, which comprises the following steps: 1. welding the lower I-steel and the upper I-steel; 2. installing overhanging I-steel and I-steel connecting beams; 3. installing a square steel pipe diagonal brace and a steel wire rope; 4. iron wire hanging overhanging steel bar truss floor support plate. Compared with the prior art, the method solves the key technical problem that the floor support of the high-altitude overhanging steel bar truss floor support plate does not meet the requirements, and the overhanging I-steel, the square steel tube diagonal bracing and the steel wire rope are arranged to form a triangular self-stabilizing structure system to bear force together, so that the structural safety is fully ensured. The invention has safe construction, low cost and strong operability, meets the environment-friendly construction requirement of high efficiency and energy conservation, and has great popularization and application values.
Description
Technical Field
The invention relates to a hanging die construction method for a high-altitude cantilever steel bar truss floor support plate, belongs to the technical field of installation of assembly type steel structure floor support plates, and is suitable for construction of the high-altitude cantilever steel bar truss floor support plate.
Background
In recent years, the projects of assembled steel structures have increased greatly, and steel bar truss floor support plates are the most common floor structure form in assembled steel structures. For modeling or functional requirements, cantilever steel bar truss building carrier plates are designed, and the cantilever lengths are different from 500mm to 3300 mm.
Aiming at the overhanging steel bar truss floor support plate, a construction method of a lower floor support is generally adopted in a design drawing, so that the steel bar truss floor support plate is prevented from deforming beyond limit under the action of load. However, the construction method of the lower floor support has two defects: firstly, if the height of the cantilever steel bar truss floor support plate from the existing natural terrace is higher, the height-to-width ratio of the lower floor support frame is out of limit, and the adverse effect of wind load is added, so that the safety risk is high, the construction cost is high, and the construction period is controlled disadvantageously. Secondly, the field working condition is complex, the working condition of building the floor support frame is not provided, and the popularization and application values are not provided.
Disclosure of Invention
The invention aims to solve the technical problems that: the high-altitude cantilever steel bar truss floor support plate hanging die construction method has the advantages that the bearing deflection deformation of the cantilever steel bar truss floor support plate is fully ensured to be within the range of 1/180 and less than or equal to 200mm of the allowable value plate span, the safety and reliability are realized, the cost is low, the environment-friendly construction requirement is met, and the technical problem that the floor support of the cantilever steel bar truss floor support plate does not meet the requirement is solved.
The invention relates to a hanging die construction method for a high-altitude cantilever steel bar truss floor support plate, which comprises the following steps:
1. welding the lower I-steel and the upper I-steel:
1.1 welding lower I-steel
Welding lower I-steel on the steel column, wherein the welding seam meets the requirements of three-level welding seams; the distance between the lower I-steel and the upper surface of the steel bar truss floor support plate is 200-400 mm;
1.2 welding the upper I-steel
1) Welding upper I-steel on the steel column, wherein the welding seam meets the requirements of three-level welding seams;
2) Welding plates with the size of 200mm multiplied by 200mm to 300mm multiplied by 300mm are arranged on the inner flange of the upper I-steel;
2. Installing overhanging I-steel and I-steel connecting beams:
2.1, mounting overhanging I-steel
1) The cantilever I-steel is arranged on the surface of the upper flange of the lower I-steel perpendicular to the cantilever I-steel and is welded and fixed;
2) The longitudinal spacing of the overhanging I-steel is 3 m-4 m;
3) A hanging ring for steel wire rope drawknot is arranged at the bottom of a position 100 mm-300 mm inward from the outer end of the overhanging I-steel;
2.2 mounting I-beam connecting beam
1) An I-steel connecting beam is arranged on the surface of the upper flange of the overhanging I-steel, and the upper flange and the lower flange are fixedly connected by adopting a steel beam fastener;
2) The horizontal distance between the connecting beams of the inner and outer rows of I-steel and the lower I-steel is respectively 1/3 and 2/3 of the overhanging length of the outer side of the overhanging I-steel;
3. Installing a square steel pipe diagonal brace and a steel wire rope:
3.1, installing a square steel pipe diagonal bracing
1) A square steel pipe diagonal bracing is arranged at the top of a position 100 mm-300 mm inward of the inner end of the overhanging I-steel; the upper end and the lower end of the square steel pipe diagonal brace are respectively welded with the welding plate and the overhanging I-shaped steel groove, and meet the requirements of three-level welding seams;
2) The limit value of the diagonal ratio of the square steel tube is 180;
3.2, installing wire rope
1) The lower end of the steel wire rope is tied with the hanging ring, and the upper end of the steel wire rope is fixed after being wound with the upper I-steel for one circle;
2) The steel wire ropes are symmetrically arranged at the positions of the hanging rings, so that the overhanging I-steel is prevented from twisting after being loaded;
4. Iron wire hanging overhanging steel bar truss floor support plate:
and hanging the steel bar truss floor bearing plate on the I-steel connecting beam by using No. 8 or No. 10 iron wires according to the 3-4 steel bar truss intervals on the I-steel connecting beam.
The hanging ring is made of round steel and is welded with overhanging I-steel in a compatible mode; the contact point of the steel wire rope and the upper I-steel is externally covered with a rubber pad.
The cantilever I-steel, the square steel pipe diagonal bracing and the steel wire rope form a self-stabilizing structure system, wherein the included angles between the cantilever I-steel and the square steel pipe diagonal bracing and between the cantilever I-steel and the steel wire rope are 45-60 degrees.
When the steel wire rope is installed, the rope tightener is adopted to tighten, so that the outer end of the cantilever I-steel is arched by 10 mm-15 mm, the steel wire rope and the cantilever I-steel are ensured to work together, and the steel bar truss floor support plate is prevented from being deformed and overrun along with the loaded deflection of the cantilever I-steel.
The iron wires are firmly bound at the upper ends of the I-steel connecting beams after passing through lower chord steel bars at two sides of the steel bar truss in the process of hanging and binding the steel wires with the steel bar truss floor support plates.
When the concrete strength of the steel bar truss floor carrier plate reaches the demolding condition, the steel wires are cut off at the position 20mm below the surface of the concrete, and the holes are filled with polymer mortar.
The steel beam fastener comprises a bolt and a steel plate, wherein the bolt and the steel plate are fastened in an assembled mode, and the overhanging I-steel and the I-steel connecting beam are connected and fixed.
The wood scaffold board is paved on the surface of the upper flange of the overhanging I-steel.
Before the overhanging section steel bar truss floor support plate iron wire is hung, the stud construction is required to be performed on the H-shaped steel beam according to the requirements of a design drawing, so that the steel bar truss floor support plate and the H-shaped steel beam are reliably fixed.
The central line direction of the upper I-steel web is the same as the horizontal load of the steel wire rope and the diagonal brace of the square steel tube, so that the lateral movement rigidity of the upper I-steel is fully exerted.
The beneficial effects of the invention are as follows:
1) Creatively provides a hanging die construction method for a high-altitude cantilever steel bar truss floor support plate, and effectively solves the problem that the traditional floor support frame cannot be constructed;
2) The lower I-steel and the upper I-steel are creatively welded on the steel column, a setting platform is provided for the overhanging I-steel, the construction of the non-overhanging section steel bar truss floor support plate is not affected, and a hanging support is provided for the construction of the overhanging section steel bar truss floor support plate;
3) The overhanging I-steel, the square steel pipe diagonal bracing and the steel wire rope form a triangular self-stabilizing structure system, are stressed together, and fully ensure the structural safety;
4) The construction method of hanging overhanging steel bar truss floor support plates by using the iron wires is convenient to construct, and convenient for concrete pouring construction and later iron wire cutting treatment;
5) The steel beam fastener is formed by combining bolts and steel plates, and the overhanging I-steel and the I-steel connecting beam are connected and fixed by adopting an assembly method, so that the assembly and disassembly are simple, and the operability is high;
6) The hanging ring adopts round steel, so that the hanging ring is convenient to weld with overhanging I-steel in a compatible way, and the welding quality is improved;
7) The steel wire ropes are symmetrically arranged at the positions of the hanging rings, and the steel wire ropes are tensioned by adopting a rope tightener when being installed, so that the outer ends of the overhanging I-steel arch for 10 mm-15 mm, and the steel wire ropes and the overhanging I-steel are ensured to work together.
The method is safe in construction, convenient to operate and low in cost, solves the technical problem that the floor support of the cantilever steel bar truss floor support plate does not meet the requirements, meets the efficient and energy-saving green construction requirements, and has great popularization and application values.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic side view of the structure of fig. 1.
In the figure: 1. a section steel column; 2. welding plates; 3. an upper I-steel; 4. diagonal bracing of square steel pipes; 5. overhanging I-steel; 6. an iron wire; 7. i-steel connecting beams; 8. lower I-steel; 9. steel bar truss floor support plate; 10. h-shaped steel beams; 11. a wire rope; 12. a hanging ring; 13. and (5) a steel beam fastener.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1-2, the method for constructing the hanging formwork of the high-altitude overhanging steel bar truss floor support plate comprises the following steps:
1. Welding the lower I-steel 8 and the upper I-steel 3:
1.1 welding lower I-steel 8
Welding lower I-steel 8 on the steel column 1, wherein the welding seam meets the requirements of three-level welding seams; the distance between the lower I-steel 8 and the upper surface of the steel bar truss floor support plate 9 is 200 mm-400 mm;
1.2 welding the upper I-steel 3
1) Welding an upper I-steel 3 on the steel column 1, wherein the welding seam meets the requirements of three-level welding seams;
2) A welding plate 2 with the size of 200mm multiplied by 200mm to 300mm multiplied by 300mm is arranged at the flange position of the inner side of the upper I-steel 3 so as to weld and fix the inclined strut 4 of the square steel pipe and the groove of the upper I-steel 3;
2. installing overhanging I-steel 5 and I-steel connecting beam 7:
2.1, mounting overhanging I-steel 5
1) The overhanging I-steel 5 is arranged on the surface of the upper flange of the lower I-steel 8 and welded and fixed;
2) The longitudinal distance between the overhanging I-steel 5 is 3 m-4 m;
3) A hanging ring 12 is arranged at the bottom of the position 100 mm-300 mm inward of the outer end of the cantilever I-steel 5 so as to facilitate the steel wire rope 11 to be tied;
4) The hanging ring 12 is made of round steel, so that the steel is convenient to weld with the overhanging I-steel 5 in a compatible manner, and the welding quality is improved;
2.2 mounting I-beam connecting beam 7
1) The upper flange surface of the overhanging I-steel 5 is perpendicular to the overhanging I-steel mounting I-steel connecting beam 7, and the upper flange surface and the overhanging I-steel mounting I-steel connecting beam are fixedly connected by adopting a steel beam fastener 13;
2) The horizontal distance between the inner and outer two rows of I-steel connecting beams 7 and the lower I-steel 8 is respectively 1/3 and 2/3 of the overhanging length of the outer side of the overhanging I-steel 5;
3. Installing square steel pipe diagonal bracing 4 and steel wire rope 11:
3.1, mounting square steel pipe diagonal bracing 4
1) A square steel pipe diagonal bracing 4 is arranged at the top of the inward 100-300 mm position of the inner end of the cantilever I-steel 5; the upper end and the lower end of the square steel pipe diagonal brace 4 are respectively welded with the welding plate 2 and the overhanging I-steel 5 groove, and the requirements of three-level welding seams are met;
2) The slenderness ratio limit value of the square steel pipe diagonal bracing 4 is 180;
3.2, installing wire rope 11
1) The lower end of the steel wire rope 11 is tied with the hanging ring 12, and the upper end is fixed after being wound with the upper I-steel 3 for one circle;
2) The steel wire ropes 11 are symmetrically arranged at the positions of the hanging rings 12 to prevent the overhanging I-steel 5 from twisting after being loaded;
3) A rubber pad is wrapped at the contact point of the steel wire rope 11 and the upper I-steel 3 to prevent the steel wire rope 11 from being worn and broken;
4. iron wire 6 hangs steel bar truss building carrier plate 9 that encorbelments:
According to the 3-4 steel bar truss intervals on the I-steel connecting beam 7, using No. 8 or No. 10 iron wires 6 to hang the steel bar truss floor support plate 9 on the I-steel connecting beam 7;
The cantilever I-steel 5, the square steel pipe diagonal bracing 4 and the steel wire rope 11 form a self-stabilizing structure system, wherein the included angle between the cantilever I-steel 5 and the square steel pipe diagonal bracing 4 as well as between the cantilever I-steel 5 and the steel wire rope 11 is 45-60 degrees. The steel wire rope 11 and the overhanging I-steel 5 are tensioned by a rope tightener when the steel wire rope 11 is installed, so that the outer end of the overhanging I-steel 5 is arched by 10 mm-15 mm, the steel wire rope 11 and the overhanging I-steel 5 are ensured to work together, and the steel bar truss floor support plate 9 is prevented from deforming and overrunning along with the loaded deflection of the overhanging I-steel 5. In the process of hanging and binding the iron wires 6 with the steel bar truss floor carrier plate 9, the iron wires 6 are firmly bound at the upper ends of the I-steel connecting beams 7 after the lower chord steel bars on the two sides of the steel bar truss. When the concrete strength of the steel bar truss floor support plate 9 reaches the demolding condition, the steel wires 6 are cut off at the position 20mm below the concrete surface, and the holes are filled with polymer mortar. The steel beam fastener 13 is formed by combining bolts and steel plates, and the overhanging I-steel 5 and the I-steel connecting beam 7 are connected and fixed by adopting an assembly method, so that the assembly and the disassembly are convenient; the wood scaffold board is paved on the surface of the upper flange of the overhanging I-steel 5, so that an operator can conveniently install the I-steel connecting beam 7 and the binding iron wires 6. Before the overhanging section steel bar truss floor supporting plate 9 is hung by the iron wires 6, the bolt construction is required to be performed on the H-shaped steel beam 10 according to the requirements of a design drawing, so that the steel bar truss floor supporting plate 9 and the H-shaped steel beam 10 are ensured to be reliably fixed. The direction of the web center line of the upper I-steel 3 is the same as the horizontal load aspect of the steel wire rope 11 and the square steel pipe diagonal brace 4, so that the lateral movement rigidity of the upper I-steel 3 can be fully exerted.
Claims (7)
1. A hanging die construction method for a high-altitude overhanging steel bar truss floor support plate is characterized by comprising the following steps of:
1. Welding the lower I-steel (8) and the upper I-steel (3):
1.1 welding lower I-steel (8)
Welding lower I-steel (8) on the section steel column (1); the distance between the lower I-steel (8) and the upper surface of the steel bar truss floor support plate (9) is 200 mm-400 mm;
1.2 welding upper I-steel (3)
1) Welding an upper I-steel (3) on the section steel column (1);
2) A welding plate (2) with the size of 200mm multiplied by 200mm to 300mm multiplied by 300mm is arranged on the inner flange of the upper I-steel (3);
2. installing overhanging I-steel (5) and I-steel connecting beams (7):
2.1, mounting overhanging I-steel (5)
1) The overhanging I-steel (5) is arranged on the surface of the upper flange of the lower I-steel (8) and welded and fixed;
2) The longitudinal distance between the overhanging I-steel (5) is 3 m-4 m;
3) A hanging ring (12) for pulling and connecting the steel wire rope (11) is arranged at the bottom of a position 100 mm-300 mm inward from the outer end of the cantilever I-steel (5);
2.2 mounting I-steel connecting beam (7)
1) An I-steel connecting beam (7) is arranged on the surface of the upper flange of the overhanging I-steel (5) and perpendicular to the overhanging I-steel (5), and the two are connected and fixed by adopting a steel beam fastener (13);
2) The horizontal distance between the inner and outer I-steel connecting beams (7) and the lower I-steel (8) is respectively 1/3 and 2/3 of the overhanging length of the outer side of the overhanging I-steel (5);
3. installing a square steel tube diagonal brace (4) and a steel wire rope (11):
3.1, mounting square steel pipe diagonal bracing (4)
1) A square steel pipe diagonal bracing (4) is arranged at the top of the inward 100-300 mm position of the inner end of the cantilever I-steel (5); the upper end and the lower end of the square steel pipe diagonal brace (4) are respectively connected with the welding plate (2) and the overhanging I-steel (5) in a groove welding way;
2) The slenderness ratio limit value of the diagonal bracing (4) of the square steel pipe is 180;
3.2, wire rope (11)
1) The lower end of the steel wire rope (11) is tied with the hanging ring (12), and the upper end is fixed after being wound with the upper I-steel (3) for one circle;
2) The steel wire ropes (11) are symmetrically arranged at the positions of the hanging rings (12) to prevent the overhanging I-steel (5) from twisting after being loaded;
4. an iron wire (6) is hung and overhanging steel bar truss floor support plate (9):
According to the 3-4 steel bar truss intervals on the I-steel connecting beam (7), a steel bar truss floor supporting plate (9) is hung on the I-steel connecting beam (7) by using an iron wire (6) with the number of 8 or 10;
The cantilever I-steel (5), the square steel pipe diagonal bracing (4) and the steel wire rope (11) form a self-stabilizing structure system, wherein the included angles between the cantilever I-steel (5) and the square steel pipe diagonal bracing (4) and the steel wire rope (11) are 45-60 degrees;
In the process of hanging and binding the iron wires (6) with the steel bar truss floor support plate (9), after the iron wires (6) pass through lower chord steel bars at two sides of the steel bar truss, binding the upper ends of the I-steel connecting beams (7) firmly;
when the concrete strength of the steel bar truss floor support plate (9) reaches the demolding condition, the steel wires (6) are cut at the position 20mm below the concrete surface, and the holes are filled with polymer mortar.
2. The method for constructing the hanging formwork of the high-altitude cantilever steel bar truss floor support plate, which is characterized by comprising the following steps of: the hanging ring (12) is made of round steel and is welded with the overhanging I-steel (5) in a compatible way; a rubber pad is wrapped at the contact point of the steel wire rope (11) and the upper I-steel (3).
3. The method for constructing the hanging formwork of the high-altitude cantilever steel bar truss floor support plate, which is characterized by comprising the following steps of: when the steel wire rope (11) is installed, a rope tightener is adopted for tightening, so that the outer end of the overhanging I-steel (5) is arched by 10-15 mm, the steel wire rope (11) and the overhanging I-steel (5) are ensured to work together, and the steel bar truss floor support plate (9) is prevented from deforming and overrunning along with the loaded deflection of the overhanging I-steel (5).
4. The method for constructing the hanging formwork of the high-altitude cantilever steel bar truss floor support plate, which is characterized by comprising the following steps of: the steel beam fastener (13) comprises a bolt and a steel plate, the bolt and the steel plate are fastened in an assembling mode, and the overhanging I-steel (5) and the I-steel connecting beam (7) are connected and fixed.
5. The method for constructing the hanging formwork of the high-altitude cantilever steel bar truss floor support plate, which is characterized by comprising the following steps of: and (3) flatly paving a wood scaffold board on the surface of the upper flange of the overhanging I-steel (5).
6. The method for constructing the hanging formwork of the high-altitude cantilever steel bar truss floor support plate, which is characterized by comprising the following steps of: before the iron wires (6) of the cantilever section steel bar truss floor support plate (9) are hung, the bolt construction is firstly carried out on the H-shaped steel beam (10) according to the requirements of a design drawing, and the steel bar truss floor support plate (9) and the H-shaped steel beam (10) are ensured to be reliably fixed.
7. The method for constructing the hanging formwork of the high-altitude cantilever steel bar truss floor support plate, which is characterized by comprising the following steps of: the direction of the web center line of the upper I-steel (3) is the same as the horizontal load aspect of the steel wire rope (11) and the square steel pipe diagonal bracing (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210997002.7A CN115341701B (en) | 2022-08-19 | 2022-08-19 | Hanging formwork construction method for high-altitude overhanging steel bar truss floor support plate |
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| CN202210997002.7A CN115341701B (en) | 2022-08-19 | 2022-08-19 | Hanging formwork construction method for high-altitude overhanging steel bar truss floor support plate |
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| CN115341701B true CN115341701B (en) | 2024-05-28 |
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| CN117071913B (en) * | 2023-07-27 | 2024-03-19 | 山东金城建设有限公司 | Steel structure cantilevered steel truss floor deck hanging formwork construction device |
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| KR20090126819A (en) * | 2008-06-05 | 2009-12-09 | (주)영구조엔지니어링 | Truss Deck Installation Structure |
| CN101538896A (en) * | 2009-04-03 | 2009-09-23 | 标力建设集团有限公司 | Construction method for jettied structure at high attitude of high-rise building |
| CN105672678A (en) * | 2016-01-26 | 2016-06-15 | 江苏南通三建集团有限公司 | Method for mounting overall steel protective shed cantilever frame |
| CN107152160A (en) * | 2017-06-22 | 2017-09-12 | 中国五冶集团有限公司 | A kind of shuttering supporting builder's jack operation platform erection method |
| CN108643544A (en) * | 2018-04-02 | 2018-10-12 | 中国十七冶集团有限公司 | A kind of high-altitude overhanging operation platform strutting system and construction method |
| CN214574606U (en) * | 2021-02-03 | 2021-11-02 | 中建科工集团有限公司 | Mounting structure of air conditioning plate of assembled residential building |
| CN216787878U (en) * | 2021-12-27 | 2022-06-21 | 中铁三局集团建筑安装工程有限公司 | Construction structure of steel bar truss floor support plate |
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| CN115341701A (en) | 2022-11-15 |
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