CN113756571B - Assembly type self-bearing die carrier device for steel reinforced concrete composite beam - Google Patents
Assembly type self-bearing die carrier device for steel reinforced concrete composite beam Download PDFInfo
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- CN113756571B CN113756571B CN202111058192.8A CN202111058192A CN113756571B CN 113756571 B CN113756571 B CN 113756571B CN 202111058192 A CN202111058192 A CN 202111058192A CN 113756571 B CN113756571 B CN 113756571B
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- steel
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- concrete composite
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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
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/04—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for lintels, beams, or transoms to be encased separately; Special tying or clamping means therefor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- 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
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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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
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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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/001—Corner fastening or connecting means for forming or stiffening elements
-
- 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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
Abstract
The assembled self-bearing formwork device for the steel reinforced concrete composite beam comprises built-in section steel, wherein the built-in section steel is used as a self-bearing direct holding force carrier, forms a closed-loop force transmission path sequentially through a U-shaped bolt, a bottom die main edge, a side die main edge and a split bolt and is used for bearing vertical and lateral loads in a construction stage; the U-shaped bolt is nested on the upper flange of the built-in steel beam, downwards penetrates through the template to be connected with the main edge of the bottom die and is used for transmitting vertical load; the bottom die main edge and the side die main edge are positioned on the same plane and fixed with each other; one end of the split bolt is connected with a web plate of the section steel, and the other end of the split bolt penetrates through the template to be connected with the main edge of the side mold and is used for transferring lateral loads; the bottom surface and the side surface of the template close to the steel reinforced concrete composite beam are arranged; secondary ridges are arranged in parallel along the span direction of the steel reinforced concrete composite beam and are orthogonal to the bottom die main ridge and the side die main ridge. The invention has the advantages of simple structure, reasonable design, reliable force transmission, good economy, easy processing of components, convenient splicing and stable quality.
Description
Technical Field
The invention belongs to the field of civil engineering, and particularly relates to a section steel concrete composite beam assembly type self-bearing formwork device.
Background
The steel reinforced concrete structure is a combined structure of steel section and steel bar arranged in concrete, and is widely applied to multi-story and high-rise buildings due to high bearing capacity, high rigidity and excellent earthquake resistance.
However, when the steel reinforced concrete beam is considered as a super-heavy structure in the construction stage, a large number of vertical rods need to be arranged at the bottom of the combined beam to meet the bearing capacity requirement. Especially for the template supporting structure mainly adopting the socket type disc mouth type steel pipe, the vertical and horizontal distances and the step distances of the vertical rods are all standard modulus, so that the bearing capacity is met, and the standard modulus is very difficult to guarantee. For this reason, the steel pipes of the disk mouth type and the fastener type are often used in a mixed manner, but the synergistic stress effect of the two is not ideal. Therefore, it is necessary to improve the formwork support structure of the steel reinforced concrete composite beam to realize a formwork system with built-in steel self-bearing.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides the assembled self-bearing formwork device for the steel reinforced concrete composite beam, which sufficiently utilizes the advantages of high self-bearing capacity and high rigidity of the built-in section steel to bear the load in the construction stage.
In order to achieve the purpose, the invention has the following technical scheme:
the embodiment of the invention provides a self-bearing formwork device assembled by a steel reinforced concrete composite beam, which comprises built-in steel, wherein the built-in steel is used as a self-bearing direct holding force carrier, forms a closed-loop force transmission path sequentially through a U-shaped bolt, a bottom die main edge, a side die main edge and a split bolt and is used for bearing vertical and lateral loads in a construction stage; the U-shaped bolt is nested on the upper flange of the built-in steel beam, downwards penetrates through the template to be connected with the main edge of the bottom die and is used for transmitting vertical load; the bottom die main edge and the side die main edge are positioned on the same plane and fixed with each other; one end of the split bolt is connected with a web plate of the section steel, and the other end of the split bolt penetrates through the template and is connected with the main edge of the side mold and used for transmitting lateral loads; the bottom surface and the side surface of the template close to the steel reinforced concrete composite beam are arranged; the secondary ridges are arranged in parallel along the span direction of the steel reinforced concrete composite beam and are orthogonal to the bottom die main ridge and the side die main ridge.
As a preferable scheme, the built-in section steel adopts full-filling solid section steel.
As a preferable scheme, the U-shaped bolt adopts a rectangular right-angle structure; the center distance of the U-shaped bolt is the diameter of the U-shaped bolt which is +3 times of the width of the upper flange of the built-in section steel, the length of the threaded section of the U-shaped bolt is more than or equal to the height from the upper flange of the built-in section steel to the bottom of the section steel concrete combined beam, the height of the secondary ridge, the height of the main ridge of the bottom die and 100mm, and the length of the thread of the U-shaped bolt is more than or equal to 150mm.
As a preferable scheme, the bottom die main edge adopts a channel steel combined section, and the gap a of the channel steel is 2 times of the diameter of the U-shaped bolt; a pin connecting plate is welded at the end part of the channel steel, and the thickness of the plate is larger than or equal to the thickness of a web plate of the channel steel; the upper flange and the lower flange of the channel steel combined section are connected through batten plate welding seams, the batten plate width is 40mm, the batten plate length is the flange width of the channel steel combined section minus 20mm, and the batten plate interval is smaller than or equal to 400mm.
As a preferable scheme, the main edge of the side mold adopts a channel steel combined section, and a channel steel gap b is 2 times of the diameter of a split bolt; the end part of the channel steel is butted with a pin connecting plate, and the thickness of the plate is more than or equal to the thickness of a channel steel web plate; the upper flange and the lower flange of the channel steel combined section are connected through batten plate welding seams, the batten plate width is 40mm, the batten plate length is the flange width of the channel steel combined section minus 20mm, and the batten plate interval is smaller than or equal to 400mm.
As a preferable scheme, the side die main edge is connected with the bottom die main edge through an end connecting plate by using a pin, the specification of the pin is not less than M20, and the cable bolt is fixed.
As a preferable scheme, the shape of the split bolt is an L shape; the projection length of the split bolt is more than or equal to the beam width/2 + the secondary ridge height + the side formwork main corrugated height + the hook straight section length +100mm, and the screw thread length is more than or equal to 150mm; wherein the length of the straight section of the 90-degree hook welded with the web plate of the section steel is more than or equal to 10 times of the diameter of the split bolt, and the size of the welding leg is more than or equal to 6mm.
As a preferable scheme, the template is a wood template or a steel template.
As a preferred scheme, the secondary ridges are made of square wood or section steel.
Compared with the prior art, the invention has the following beneficial effects: the built-in profile steel of the profile steel concrete composite beam is used as a holding force carrier of a self-bearing structure, and the main edge of the bottom die is hung through the U-shaped bolts to transfer vertical load in the construction stage. Meanwhile, the bottom die main edge is used as a supporting structure of the side die main edge, and the side die main edge is pulled and connected through the split bolt to bear the lateral load in the construction stage, so that a closed-loop self-bearing force transmission path is formed. The assembled self-bearing die carrier device has the advantages of simple structure, reasonable design, reliable force transmission and good economy. The components are easy to process, standardized in production, convenient to splice and stable in quality.
Drawings
FIG. 1 is a schematic view of the overall structure of the fabricated self-supporting formwork device for steel reinforced concrete composite beams according to the present invention;
FIG. 2 is a schematic front view structure diagram of a side mold main edge of the invention;
FIG. 3 is a schematic side view of the main edge of the side mold of the present invention;
FIG. 4 is a schematic cross-sectional structure diagram of a main edge of the side mold of the invention;
FIG. 5 is a schematic diagram of an overall assembly structure of the side mold main edge of the invention;
fig. 6 is a schematic side view of the bottom die main ridge of the present invention;
FIG. 7 is a schematic front view of a bottom die main ridge according to the present invention;
FIG. 8 is a schematic cross-sectional view of a bottom die main ridge according to the present invention;
in the drawings: 1-building section steel; 2-U-shaped bolt; 3-bottom die main corrugation; 4-side mould main edge; 5-split bolts; 6-pins; 7-template; 8-minor arris.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the embodiment of the fabricated self-bearing formwork device for the steel reinforced concrete composite beam of the invention comprises a fabricated self-bearing device and a steel reinforced concrete composite beam, wherein built-in steel profiles 1 are used as direct holding force carriers of the self-bearing device and form a closed-loop force transmission path sequentially through U-shaped bolts 2, bottom die main ridges 3, side die main ridges 4 and split bolts 5 for bearing vertical and lateral loads in a construction stage; the U-shaped bolts 2 are embedded in the upper flange of the built-in steel section beam 1, and the lower penetrating template 7 is in bolt connection with the bottom die main ridge 3 to transmit vertical load; the bottom die main edge 3 and the side die main edge 4 are positioned on the same plane and are fixed by a pin 6 through a connecting plate; one end of a split bolt 5 is welded with a web plate of the section steel 1, and the other end of the split bolt penetrates through a template 7 and is in bolt connection with a main edge 4 of the side mold to transmit lateral load; the template 7 is tightly attached to the bottom surface and the side surface of the steel reinforced concrete composite beam; the secondary ridges 8 are arranged in parallel to the span direction of the steel reinforced concrete composite beam and are orthogonal to the bottom die main ridges 3 and the side die main ridges 4. In the figure, the assembled self-bearing formwork device for the steel reinforced concrete composite beam is shown, wherein the height of the steel reinforced concrete composite beam is H, and the width of the beam is B.
In this embodiment, the built-in section steel 1 of the assembled self-supporting device of the section steel concrete composite beam is full of solid web section steel.
In this embodiment, the U-bolt 2 has a rectangular right-angle structure. The center distance of the U-shaped bolt 2 is the diameter of the U-shaped bolt 2 with the width of the upper flange of the built-in section steel 1 being +3 times, the length of the threaded section of the U-shaped bolt 2 is larger than or equal to the height from the upper flange of the built-in section steel 1 to the bottom of the section steel concrete combined beam, the height of the secondary ridge 8, the height of the bottom die main ridge 3 and 100mm, and the length of the thread of the U-shaped bolt 2 is larger than or equal to 150mm.
Referring to fig. 6 to 8, in the present embodiment, the bottom die main edge 3 adopts a channel steel combined section ] [, and a channel steel gap a is 2 times the diameter of the U-shaped bolt 2; a pin connecting plate is welded at the end part of the channel steel, and the thickness of the plate is more than or equal to the thickness of a channel steel web plate; the upper flange and the lower flange of the channel steel combined section are connected by batten plate welding seams, the batten plate width is 40mm, the batten plate length is the flange width of the channel steel combined section-20 mm, and the batten plate interval is less than or equal to 400mm.
Referring to fig. 2 to 4, in the embodiment, the main edge of the side mold adopts a channel steel combined section, and a channel steel gap b is 2 times of the diameter of the split bolt 5; the end part of the channel steel is butted with a pin connecting plate, and the thickness of the plate is more than or equal to the thickness of a channel steel web plate; the upper flange and the lower flange of the channel steel combined section are connected through batten plate welding seams, the batten plate width is 40mm, the batten plate length is the flange width of the channel steel combined section minus 20mm, and the batten plate interval is smaller than or equal to 400mm.
Referring to fig. 5, in the embodiment, the side mold main edge 4 is connected with the bottom mold main edge 3 through the end connecting plate by using the pin 6, the specification of the pin 6 is not less than M20, and the cable bolt is fixed.
In the present embodiment, the shape of the split bolt 5 is L-shaped; the projection length of the split bolt 5 is more than or equal to the beam width/2 + the secondary ridge height + the side formwork main height + the hook straight section length +100mm of the steel reinforced concrete composite beam, and the screw thread length is more than or equal to 150mm; wherein the length of the straight section of the 90-degree hook welded with the web plate of the section steel is more than or equal to 10 times of the diameter of the split bolt 5, and the size of the welding leg is more than or equal to 6mm.
In this embodiment, the template 7 is a wooden template or a steel template.
In this embodiment, the secondary ridges 8 are made of square wood or steel.
The assembling process of the steel reinforced concrete composite beam assembling type self-bearing die carrier device is as follows:
in the actual processing and splicing process, firstly, the specifications and the arrangement intervals of a template 7, a secondary edge 8, a bottom die main edge 3, a side die main edge 4, a U-shaped bolt 2 and a split bolt 5 are calculated according to the section size and the construction load of the steel reinforced concrete composite beam; secondly, determining a channel steel combined section gap a of the bottom die main edge 3 and a channel steel combined section gap b of the side die main edge 4 according to the diameter of the U-shaped bolt 2 and the diameter of the split bolt 5; and pin connection plates are welded at the end parts of the channel steels to complete factory assembly of the bottom die main edge 3 and the side die main edge 4 channel steel combined components, so that the combined components can be stored, transported and installed on site. During actual construction, firstly arranging a template 7, a secondary edge 8 and a bottom die main edge 3 of a combined beam bottom, and then installing a U-shaped bolt 2 on the upper flange of the section steel, so that the U-shaped bolt 2 penetrates through a gap of the combined section of the channel steel of the template 7 and the bottom die main edge 3 and is fastened, and the installation of a bottom die supporting structure is completed; and then installing a template 7, a secondary edge 8 and a side mould main edge 4 on the side surface, and connecting the side mould main edge 4 with the bottom mould main edge 3 by adopting a pin 6. Meanwhile, the split bolt 5 penetrates through a gap between the section of the channel steel combination of the template 7 and the main edge 4 of the side die and is fastened, and the installation of the side die supporting structure is completed. And finishing the installation and construction of the whole steel reinforced concrete composite beam assembled self-bearing formwork device.
The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and it should be understood by those skilled in the art that the technical solution can be modified and replaced by a plurality of simple modifications and replacements without departing from the spirit and principle of the present invention, and the modifications and replacements also fall into the protection scope covered by the claims.
Claims (6)
1. The utility model provides a shaped steel concrete composite beam assembled self-supporting die carrier device which characterized in that: the self-bearing steel formwork comprises built-in section steel (1), wherein the built-in section steel (1) is used as a self-bearing direct holding force carrier, forms a closed-loop force transmission path sequentially through a U-shaped bolt (2), a bottom die main edge (3), a side die main edge (4) and a split bolt (5) and is used for bearing vertical and lateral loads in a construction stage;
the U-shaped bolt (2) is nested at the upper flange of the built-in section steel (1), downwards penetrates through the template (7) and is connected with the bottom die main edge (3) and is used for transmitting vertical load; the bottom die main edge (3) and the side die main edge (4) are positioned on the same plane and fixed with each other; one end of the split bolt (5) is connected with a web plate of the built-in section steel (1), and the other end of the split bolt penetrates through the template (7) to be connected with the side mold main edge (4) and is used for transmitting lateral loads; the template (7) is arranged on the bottom surface and the side surface of the steel reinforced concrete composite beam tightly attached; secondary ridges (8) are arranged in parallel along the span direction of the steel reinforced concrete composite beam and are orthogonal to the bottom die main ridge (3) and the side die main ridge (4);
the side die main edge (4) is connected with the bottom die main edge (3) through an end connecting plate by adopting a pin (6);
specifically, the bottom die main edge (3) is hung through the U-shaped bolts (2) to transmit vertical load in a construction stage; the bottom die main edge (3) is used as a supporting structure of the side die main edge (4), the side die main edge (4) is pulled and connected through the counter-pulling bolt (5), and the lateral load in the construction stage is borne, so that a closed-loop self-bearing force transmission path is formed;
the U-shaped bolt (2) adopts a rectangular right-angle structure;
the center distance of the U-shaped bolts (2) is the diameter of the U-shaped bolts (2) with the width of the upper flange of the built-in section steel (1) being plus 3 times, the length of the thread sections of the U-shaped bolts (2) is more than or equal to the height from the upper flange of the built-in section steel (1) to the bottom of the section steel concrete composite beam plus the height of the secondary edge (8) plus the height of the bottom die main edge (3) plus 100mm, and the thread length of the U-shaped bolts (2) is more than or equal to 150mm;
the bottom die main edge (3) adopts a channel steel combined section, and the channel steel gap a is 2 times of the diameter of the U-shaped bolt (2); a pin connecting plate is welded at the end part of the channel steel, and the thickness of the plate is larger than or equal to the thickness of a web plate of the channel steel; the upper flange and the lower flange of the channel steel combined section are connected by batten plate welding seams, the batten plate width is 40mm, the batten plate length is the flange width of the channel steel combined section-20 mm, and the batten plate interval is less than or equal to 400mm;
the side mold main edge (4) adopts a channel steel combined section, and the channel steel gap b is 2 times of the diameter of the split bolt (5); the end part of the channel steel is butted with a pin connecting plate, and the thickness of the plate is larger than or equal to the thickness of a web plate of the channel steel; the upper flange and the lower flange of the channel steel combined section are connected by batten plate welding seams, the batten plate width is 40mm, the batten plate length is the flange width of the channel steel combined section-20 mm, and the batten plate interval is less than or equal to 400mm.
2. The fabricated self-bearing formwork device for the steel reinforced concrete composite beam according to claim 1, wherein: the built-in section steel (1) is full solid section steel.
3. The assembled self-supporting formwork device for the steel reinforced concrete composite beam as claimed in claim 1, wherein: the specification of the pin (6) is not less than M20, and the cable bolt is fixed.
4. The fabricated self-bearing formwork device for the steel reinforced concrete composite beam according to claim 1, wherein: the split bolt (5) is L-shaped; the projection length of the split bolts (5) is more than or equal to the beam width/2 + secondary ridge height of the steel reinforced concrete composite beam + side formwork height + bent straight section length +100mm, and the thread length is more than or equal to 150mm; wherein the length of the straight section of the 90-degree hook welded with the section steel web plate is more than or equal to 10 times of the diameter of the split bolt (5), and the size of the welding leg is more than or equal to 6mm.
5. The assembled self-supporting formwork device for the steel reinforced concrete composite beam as claimed in claim 1, wherein: the template (7) adopts a wood template or a steel template.
6. The fabricated self-bearing formwork device for the steel reinforced concrete composite beam according to claim 1, wherein: the secondary edges (8) are made of square wood or section steel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111058192.8A CN113756571B (en) | 2021-09-09 | 2021-09-09 | Assembly type self-bearing die carrier device for steel reinforced concrete composite beam |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111058192.8A CN113756571B (en) | 2021-09-09 | 2021-09-09 | Assembly type self-bearing die carrier device for steel reinforced concrete composite beam |
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| CN113756571A CN113756571A (en) | 2021-12-07 |
| CN113756571B true CN113756571B (en) | 2022-12-02 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111155759A (en) * | 2020-02-21 | 2020-05-15 | 河北建筑工程学院 | Novel unit truss type concrete frame structure formwork supporting system and construction method thereof |
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| US2554431A (en) * | 1949-04-01 | 1951-05-22 | Lemuel R Vines | Beam form kicker tie |
| CN201254832Y (en) * | 2008-09-10 | 2009-06-10 | 中国建筑第四工程局有限公司 | Self-supporting template apparatus for conversion layer structure |
| CN103046743B (en) * | 2012-12-04 | 2016-05-25 | 中建三局建设工程股份有限公司 | A kind of Super High conversion layer steel reinforced concrete crossbeam suspension type form bracing system and construction method |
| CN204571294U (en) * | 2015-04-28 | 2015-08-19 | 中国建筑第五工程局有限公司 | Different level concrete support mould tool |
| CN211447771U (en) * | 2019-10-29 | 2020-09-08 | 天津东义镁制品股份有限公司 | Corner building templates |
| CN110952719A (en) * | 2019-12-19 | 2020-04-03 | 中建四局土木工程有限公司 | Section steel concrete beam and construction method thereof |
| CN213115498U (en) * | 2020-08-26 | 2021-05-04 | 中天建设集团有限公司 | Novel cast-in-place concrete beam universal fixturing |
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| CN111155759A (en) * | 2020-02-21 | 2020-05-15 | 河北建筑工程学院 | Novel unit truss type concrete frame structure formwork supporting system and construction method thereof |
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