CN113027118A - Can have enough to meet need and loose unilateral formwork steel support of piece together formula - Google Patents
Can have enough to meet need and loose unilateral formwork steel support of piece together formula Download PDFInfo
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- CN113027118A CN113027118A CN202110223699.8A CN202110223699A CN113027118A CN 113027118 A CN113027118 A CN 113027118A CN 202110223699 A CN202110223699 A CN 202110223699A CN 113027118 A CN113027118 A CN 113027118A
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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
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
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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
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/14—Comprising essentially pre-assembled two-dimensional frame-like elements, e.g. of rods in L- or H-shape, with or without bracing
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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
- E04G25/00—Shores or struts; Chocks
- E04G25/02—Shores or struts; Chocks non-telescopic
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Abstract
The invention discloses a turnover and loose-assembly type unilateral formwork supporting steel bracket which is arranged at intervals along the extension direction of a shear wall, adjacent steel brackets are connected into a whole through a horizontal tie bar, and a formwork is fixedly arranged at a designed position on one side close to the shear wall through a main keel and a secondary keel; the section steel support comprises a plurality of sections of standard sections, the standard sections comprise first unit pieces on two sides and second unit pieces in the middle, and the first unit pieces and the second unit pieces are fixedly connected through connecting plates and connecting bolts. The invention has simple structure, higher modularization degree and processing precision, smaller module monomer size, safety and stability, convenient and quick construction, reduces the construction cost, can adapt to various layer heights, can be repeatedly assembled and disassembled as required, and can be repeatedly recycled in different projects.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a turnover and loose-assembly type single-side formwork steel support.
Background
With the rapid development of urban construction, the red line of the construction land is controlled more and more strictly, so that the construction site range is narrower and narrower, and underground foundation pits and ground structural engineering develop in the deep, high and large directions, so that higher requirements are provided for the unilateral vertical formwork structure and the construction technology of the high and large side wall.
Because the requirements of formwork supporting and waterproof construction operation surfaces cannot be met between the basement outer wall and the foundation pit supporting pile, double-side formwork supporting construction cannot be carried out on the outer wall according to a conventional method, and the basement outer wall is constructed in a single-side formwork supporting mode. However, the traditional single-side formwork support body is too large in size, and the installation cannot be carried out on the inner side of the outer wall of the basement at the position with a high span and an empty layer. And the installation process is complicated, and the steel consumption is more.
Disclosure of Invention
The invention aims to provide a turnover split type single-side supporting formwork section steel support to solve the technical problems in the background technology.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
a turnover and loose-assembly type unilateral formwork steel support is arranged at intervals along the extending direction of a shear wall, adjacent steel supports are connected into a whole through a horizontal tie bar, and a template is fixedly arranged at a designed position on one side close to the shear wall through a main keel and a secondary keel;
the section steel support comprises a plurality of sections of standard sections, each standard section comprises first unit slices on two sides and second unit slices in the middle, and the first unit slices and the second unit slices are fixedly connected through connecting plates and connecting bolts;
the first unit piece comprises a vertical supporting chord member, a first gusset plate is fixedly welded on the middle upper portion of one side of the vertical supporting chord member, a first connecting rod is vertically welded on the middle portion of the other side of the vertical supporting chord member, a first diagonal web member and a first horizontal web member are respectively fixedly welded on the top and bottom ends of one side, far away from the vertical supporting chord member, of the first gusset plate, the first diagonal web member and the horizontal direction are inclined upwards at an included angle of 45 degrees, and a plurality of first bolt holes are formed in the overlapped part of the vertical supporting chord member, the first diagonal web member and the first horizontal web member and the connecting plate;
the second unit piece includes a horizontal web member of second, the perpendicular welding in horizontal web member middle part top side of second has a second connecting rod, and middle part bottom side welded fastening has a second gusset plate, second gusset plate bottom extends to horizontal web member below of second, and its bottom both sides welded fastening respectively has a second oblique web member, and two second oblique web members deviate from each other, and all be 45 contained angles slope setting downwards with the horizontal direction, a big style of calligraphy structure is constituteed to horizontal web member of second, second oblique web member and second connecting rod, and a plurality of second bolt holes have been seted up to horizontal web member of second, second oblique web member and connecting plate coincide position.
Preferably, the bottom end of the profile steel support is additionally provided with a foundation section, the foundation water is horizontally placed on a floor slab on the inner side of the shear wall and comprises two first unit pieces, the two first unit pieces are respectively arranged on two sides of the foundation section, the top of a vertical supporting chord member of the foundation water is fixedly connected with a standard section through a connecting plate and a connecting bolt, first horizontal web members of the two first unit pieces are oppositely arranged, a foundation section web member is fixedly arranged between the two first horizontal web members through the connecting plate and the connecting bolt, a horizontal chord member is fixedly welded between the two vertical supporting chord members below the foundation section web member, a reinforcing inclined rod is fixedly welded between the two ends of the horizontal chord member and the vertical supporting chord member above the horizontal chord member and is used for increasing the overall stability of the profile steel support and used as an installation platform of foundation bolts, and a foundation section backing plate is fixedly welded at the bottom end of the vertical supporting chord, so as to enlarge the ground plane of the steel bracket.
Preferably, one side of the foundation section, which is close to the shear wall, is connected with the lower-layer main body structure through foundation bolts.
Preferably, the position that corresponds first bolt hole and second bolt hole on the connecting plate is seted up with the third bolt hole of the two assorted, and the connecting plate is divided into first connecting plate, second connecting plate and third connecting plate three kinds according to its difference that sets up the position, vertical support chord member connected node is located to first connecting plate, first oblique web member and second oblique web member connected node are located to the second connecting plate, first horizontal web member and basic festival web member, second horizontal web member connected node are located to the third connecting plate, base festival and multistage standard festival are assembled into a fan-shaped steel support to connecting plate and connecting bolt.
Preferably, rag bolt includes shank of bolt, double pin presser foot channel-section steel, connection gasket and straight thread sleeve, the shank of bolt is buried underground in lower floor's major structure concrete, and the vertical setting in its bottom is 45 contained angles with the shear force wall and extends to the shaped steel support region, double pin presser foot channel-section steel leads to long the setting along the shear force wall extending direction, and the web of its two channel-section steels sets up relatively and presss from both sides tight shank of bolt, and its bottom pterygoid lamina pastes and establishes on the reinforcement down tube that the foundation section is close to shear force wall one side, it overlaps from bottom to top in proper order to establish on the shank of bolt to connect gasket and straight thread sleeve to compress tightly the top pterygoid lamina of two channel.
Preferably, the horizontal tie bars are arranged at the first connecting rod and the second connecting rod at the side far away from the shear wall and are connected with the first connecting rod and the second connecting rod through fasteners, and the main keel is arranged on the first connecting rod at the side near the shear wall.
Preferably, one side of the section steel support, which is far away from the shear wall, is provided with an inclined strut, the top end of the inclined strut is connected with the horizontal tie bar through a fastener, and the bottom end of the inclined strut is fixedly connected with a ground anchor anchored in the floor concrete through a fastener.
Preferably, the arrangement distance of the section steel support is not more than 1200mm, and the arrangement distance of the foundation bolts is not more than 200 mm.
Preferably, the horizontal chord and the vertical support chord are both made of Q345-level double-spliced 12.6# channel steel, the reinforcing diagonal is made of Q345-level 12.6# channel steel, the opening of the channel steel is arranged downwards, the base section web member, the first diagonal web member, the first horizontal web member, the second horizontal web member and the second diagonal web member are all made of Q345-level double-spliced L80 multiplied by 50 multiplied by 5 angle steel, the first connecting rod and the second connecting rod are all made of phi 48 multiplied by 3.0 steel tubes, the bolt rod is made of HRB400 phi 25mm threaded steel, and the double-spliced presser foot channel steel is made of Q345-level double-spliced 10# channel steel.
Compared with the prior art, the invention has the beneficial effects that:
1. the steel pipe support frame is simple in structure, safe and stable, convenient and quick to construct, and capable of replacing a traditional single-side support steel pipe support frame or a traditional triangular support frame, greatly reducing the using amount of steel, reducing the construction cost and shortening the construction period;
2. the base section and the standard section are formed by assembling highly modularized unit pieces, the unit pieces are formed by welding at one time, the modularization degree and the processing precision are higher, the size of a single body is smaller, the high-rise building block can adapt to various layer heights, and the high-rise building block can be repeatedly assembled and disassembled as required and can be repeatedly recycled in different projects.
Drawings
The above and/or other aspects and advantages of the present invention will become more apparent and more readily appreciated from the detailed description taken in conjunction with the following drawings, which are meant to be illustrative, not limiting of the invention, and in which:
FIG. 1 is a schematic structural view of a rotatable and assembled single-side supporting formwork type steel support in the extending direction of a vertical shear wall in embodiment 1 of the invention;
FIG. 2 is a schematic structural view of a rotatable and assembled single-side supporting formwork type steel support in the embodiment 2 of the invention, which is perpendicular to the extension direction of a shear wall;
FIG. 3 is a schematic structural diagram of a first unit piece of a turnable and split type unilateral supporting framework type steel bracket according to the present invention;
FIG. 4 is a schematic structural diagram of a second unit piece of a turnable and split type unilateral supporting framework steel bracket according to the present invention;
FIG. 5 is a schematic structural view of a foundation section of a turnable and assembled single-side supporting formwork type steel bracket according to the present invention;
fig. 6 is a schematic structural diagram of a standard knot of a rotatable and assembled single-side supporting formwork type steel bracket.
Reference numerals: 1-foundation section, 101-horizontal chord, 102-foundation section web member, 103-foundation section backing plate, 104-reinforcement diagonal member, 2-first unit piece, 201-vertical support chord, 202-first diagonal web member, 203-first horizontal web member, 204-first node plate, 205-first connecting rod, 206-first bolt hole, 3-second unit piece, 301-second horizontal web member, 302-second diagonal web member, 303-second node plate, 304-second connecting rod, 305-second bolt hole, 4-connecting plate, 401-first connecting plate, 402-second connecting plate, 403-third connecting plate, 404-third bolt hole, 5-connecting bolt, 6-foundation bolt, 601-bolt, 602-double-split presser foot channel steel, 603-connecting shim, 604-straight thread sleeve, 7-horizontal tie bar, 8-main keel, 9-secondary keel, 10-template, 11-diagonal brace and 12-ground anchor.
Detailed Description
Hereinafter, an embodiment of a returnable split single-side-supported modular steel stent of the present invention will be described with reference to the accompanying drawings. The examples described herein are specific embodiments of the present invention, are intended to be illustrative and exemplary in nature, and are not to be construed as limiting the scope of the invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.
In the description of the present invention, it should be noted that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of respective portions and their mutual relationships. It is noted that the drawings are not necessarily to the same scale so as to clearly illustrate the structures of the various elements of the embodiments of the invention. Like reference numerals are used to denote like parts.
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth to illustrate, but are not to be construed to limit the scope of the invention. Preferred embodiments of the present invention are described in further detail below with reference to FIGS. 1-6:
example 1
As shown in fig. 1, the preferable turnover and split type unilateral supporting formwork section steel supports are arranged at intervals along the extension direction of the shear wall, the arrangement interval is not more than 1200mm, the adjacent section steel supports are connected into a whole through a horizontal tie bar 7, and a template 10 is fixedly arranged at a designed position on one side close to the shear wall through a main keel 8 and a secondary keel 9;
the section steel support comprises a plurality of sections of standard joints, as shown in fig. 6, each standard joint comprises first unit slices 2 on two sides and second unit slices 3 in the middle, and the first unit slices 2 and the second unit slices 3 are fixedly connected through connecting plates 4 and connecting bolts 5;
as shown in fig. 3, the first unit piece 2 includes a vertical support chord 201, a first gusset plate 204 is welded and fixed to the middle upper portion of one side of the vertical support chord 201, a first connecting rod 205 is vertically welded and fixed to the middle portion of the other side of the vertical support chord 201, a first diagonal web member 202 and a first horizontal web member 203 are respectively welded and fixed to the top and bottom ends of one side of the first gusset plate 204, which is far away from the vertical support chord 201, the first diagonal web member 202 is inclined upward at an included angle of 45 ° with the horizontal direction, and a plurality of first bolt holes 206 are formed in the overlapped portion of the vertical support chord 201, the first diagonal web member 202, the first horizontal web member 203 and the connecting plate 4;
as shown in fig. 4, the second unit piece 3 includes a second horizontal web member 301, a second connecting rod 304 is vertically welded to the top side of the middle portion of the second horizontal web member 301, a second gusset plate 303 is welded and fixed to the bottom side of the middle portion, the bottom end of the second gusset plate 303 extends to the lower portion of the second horizontal web member 301, a second oblique web member 302 is respectively welded and fixed to two sides of the bottom end of the second horizontal web member, the two second oblique web members 302 deviate from each other and are both inclined downward at an included angle of 45 ° with the horizontal direction, the second horizontal web member 301, the second oblique web member 302 and the second connecting rod 304 form a large-shaped structure, and a plurality of second bolt holes 305 are formed in the overlapped portion of the second horizontal web member 301, the second oblique web member 302 and the connecting plate 4;
the horizontal tie bars 7 are arranged at the first connecting rod 205 and the second connecting rod 304 on the side far away from the shear wall, and are connected with the first connecting rod 205 and the second connecting rod 304 through fasteners, and the main keel 8 is erected on the first connecting rod 205 on the side close to the shear wall;
concrete lateral pressure directly acts on the template 10 panel, will pass to vertical flitch secondary joist 9 through the panel with power, and on horizontal channel-section steel main joist 8 was passed to rethread flitch, finally passed to on the unilateral shaped steel support.
Example 2
As shown in fig. 2, the preferable turnover and split type unilateral supporting formwork section steel supports are arranged at intervals along the extension direction of the shear wall, the arrangement interval is not more than 1200mm, the adjacent section steel supports are connected into a whole through a horizontal tie bar 7, and a template 10 is fixedly arranged at a designed position on one side close to the shear wall through a main keel 8 and a secondary keel 9;
the section steel support comprises a plurality of sections of standard joints, as shown in fig. 6, each standard joint comprises first unit slices 2 on two sides and second unit slices 3 in the middle, and the first unit slices 2 and the second unit slices 3 are fixedly connected through connecting plates 4 and connecting bolts 5;
as shown in fig. 3, the first unit piece 2 includes a vertical support chord 201, a first gusset plate 204 is welded and fixed to the middle upper portion of one side of the vertical support chord 201, a first connecting rod 205 is vertically welded and fixed to the middle portion of the other side of the vertical support chord 201, a first diagonal web member 202 and a first horizontal web member 203 are respectively welded and fixed to the top and bottom ends of one side of the first gusset plate 204, which is far away from the vertical support chord 201, the first diagonal web member 202 is inclined upward at an included angle of 45 ° with the horizontal direction, and a plurality of first bolt holes 206 are formed in the overlapped portion of the vertical support chord 201, the first diagonal web member 202, the first horizontal web member 203 and the connecting plate 4;
as shown in fig. 4, the second unit piece 3 includes a second horizontal web member 301, a second connecting rod 304 is vertically welded to the top side of the middle portion of the second horizontal web member 301, a second gusset plate 303 is welded and fixed to the bottom side of the middle portion, the bottom end of the second gusset plate 303 extends to the lower portion of the second horizontal web member 301, a second oblique web member 302 is respectively welded and fixed to two sides of the bottom end of the second horizontal web member, the two second oblique web members 302 deviate from each other and are both inclined downward at an included angle of 45 ° with the horizontal direction, the second horizontal web member 301, the second oblique web member 302 and the second connecting rod 304 form a large-shaped structure, and a plurality of second bolt holes 305 are formed in the overlapped portion of the second horizontal web member 301, the second oblique web member 302 and the connecting plate 4;
in order to facilitate the installation of the section steel bracket, a section of foundation section 1 is additionally arranged at the bottom end of the section steel bracket, as shown in figure 5, the foundation section 1 is horizontally arranged on a floor slab on the inner side of the shear wall and comprises two first unit pieces 2, the two first unit pieces 2 are respectively arranged on two sides of the foundation section 1, the top of a vertical supporting chord 201 of the foundation section is fixedly connected with a standard section through a connecting plate 4 and a connecting bolt 5, first horizontal web members 203 of the two are oppositely arranged, and a base joint web member 102 is fixedly arranged between the two first horizontal web members 203 through a connecting plate 4 and a connecting bolt 5, a horizontal chord member 101 is welded and fixed between two vertical supporting chord members 201 below the base web member 102, a reinforcing oblique rod 104 is welded and fixed between each of two ends of the horizontal chord 101 and the vertical support chord 201 above the horizontal chord, and a foundation joint backing plate 103 is welded and fixed at each of the bottom ends of the vertical support chords 201;
the anchor bolts 6 are distributed on two sides of the section steel support along the extension direction of the shear wall, the arrangement distance is 200mm, and the anchor bolts comprise bolt rods 601, double-spliced pressure foot channel steel 602, connecting gaskets 603 and straight thread sleeves 604, the bolt rods 602 are embedded in the lower-layer main structure concrete, the bottom ends of the bolt rods are vertically arranged, the top ends of the bolt rods and the shear wall form an included angle of 45 degrees and extend to the section steel support area, the double-spliced pressure foot channel steel 602 is arranged along the extension direction of the shear wall in a whole length mode, web plates of two channel steels of the double-spliced pressure foot channel steel are oppositely arranged and clamp the bolt rods 601, bottom wing plates of the double-spliced pressure foot channel steel are attached to a reinforcing inclined rod 104 on one side, close to the shear wall, of a foundation section 1, the connecting gaskets 603 and the;
the horizontal tie bars 7 are arranged at the first connecting rod 205 and the second connecting rod 304 on the side far away from the shear wall, and are connected with the first connecting rod 205 and the second connecting rod 304 through fasteners, and the main keel 8 is erected on the first connecting rod 205 on the side close to the shear wall;
the steel pipe inclined struts 11 are arranged on one side, away from the shear wall, of the section steel support, the inclined struts 11 are arranged at intervals along the extension direction of the shear wall, the arrangement distance is 1200mm, the top ends of the inclined struts are connected with the horizontal tie bars 7 through fasteners, the bottom ends of the inclined struts are fixedly connected with C25 steel bar ground anchors 12 anchored in floor concrete through fasteners, the length of the embedded depth section of each ground anchor 12 is 600mm, and the length of the exposed ends of the ground anchors is 200 mm;
the concrete side pressure directly acts on a panel of a template 10, the force is transmitted to a vertical batten secondary keel 9 through the panel, then transmitted to a transverse channel steel main keel 8 through the batten, and finally transmitted to a single-side steel support, a calculation model is reasonably selected, the whole stress of a profile steel support frame is analyzed, the model is simple and conservative, the calculation is convenient, and the result is safe, profile steels of different specifications are adopted for a comparison profile steel table for trial calculation, finally the horizontal chord 101 and the vertical support chord 201 are determined to be manufactured by double-spliced 12.6# channel steel of Q345 level, the reinforcing diagonal rod 104 is manufactured by double-spliced 12.6# channel steel of Q345 level, the opening of the channel steel is arranged downwards, the base section web member 102, the first diagonal web member 202, the first horizontal web member 203, the second horizontal web member 301 and the second diagonal web member 302 are manufactured by double-spliced L80 multiplied by 50 by 5 angle steel of Q345 level, the first connecting rod 205 and the second connecting rod 304 are manufactured by steel pipes of 48 multiplied by 3.0, the bolt rod 601 is made of HRB400 phi 25mm deformed steel bar, and the double-spliced presser foot channel steel 602 and the main keel 8 are both made of Q345-level double-spliced 10# channel steel.
All welding works are carried out in a processing plant, a foundation section 1 is manufactured and installed by a manufacturer and integrally transported to the site, unit pieces are assembled into standard sections on the construction site, foundation bolts 6 are installed after the foundation section 1 is hoisted and positioned, heightened section standard sections are assembled in a material stacking site in advance, a unilateral bracket is hoisted to the site from the stacking site and fixed with the foundation section 1 through a connecting plate 4 and a connecting bolt 5 after a unilateral bracket is assembled, and then an inclined strut 11 is supported.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides a can have enough to meet need and loose unilateral formwork shaped steel support of piece together formula which characterized in that: the steel frames are arranged at intervals along the extending direction of the shear wall, the adjacent section steel supports are connected into a whole through a horizontal tie bar (7), and a template (10) is fixedly arranged at a designed position on one side of the steel frames close to the shear wall through a main keel (8) and a secondary keel (9);
the section steel support comprises a plurality of sections of standard sections, each standard section comprises first unit slices (2) on two sides and second unit slices (3) in the middle, and the first unit slices (2) and the second unit slices (3) are fixedly connected with connecting bolts (5) through connecting plates (4);
the first unit piece (2) comprises a vertical supporting chord member (201), a first gusset plate (204) is fixedly welded to the middle upper portion of one side of the vertical supporting chord member (201), a first connecting rod (205) is vertically welded to the middle portion of the other side of the vertical supporting chord member (201), a first oblique web member (202) and a first horizontal web member (203) are fixedly welded to the top and bottom ends of one side, away from the vertical supporting chord member (201), of the first gusset plate (204), the first oblique web member (202) is inclined upwards at an included angle of 45 degrees with the horizontal direction, and a plurality of first bolt holes (206) are formed in the overlapped portion of the vertical supporting chord member (201), the first oblique web member (202), the first horizontal web member (203) and the connecting plate (4);
second unit piece (3) include horizontal web member of a second (301), the perpendicular welding in horizontal web member of second (301) middle part top side has a second connecting rod (304), and middle part bottom side welded fastening has a second gusset plate (303), second gusset plate (303) bottom extends to horizontal web member of second (301) below, and its bottom both sides welded fastening respectively has a second diagonal web member (302), and two second diagonal web members (302) deviate from each other, and all be 45 contained angles slope setting downwards with the horizontal direction, horizontal web member of second (301), second diagonal web member (302) and second connecting rod (304) constitute a big style of calligraphy structure, and horizontal web member of second (301), second diagonal web member (302) and connecting plate (4) coincide position and seted up a plurality of second bolt holes (305).
2. The turnover split type unilateral supporting formwork steel support frame as claimed in claim 1, wherein: the bottom end of the profile steel support is additionally provided with a foundation section (1), the foundation section (1) is horizontally placed on a floor slab on the inner side of a shear wall and comprises two first unit pieces (2), the two first unit pieces (2) are respectively arranged on two sides of the foundation section (1), the top of a vertical supporting chord (201) is fixedly connected with a standard section through a connecting plate (4) and a connecting bolt (5), first horizontal web members (203) of the two first unit pieces are oppositely arranged, a foundation section web member (102) is fixedly arranged between the two first horizontal web members (203) through the connecting plate (4) and the connecting bolt (5), a horizontal chord member (101) is fixedly welded between the two vertical supporting chord members (201) below the foundation section web member (102), and a reinforcing diagonal member (104) is fixedly welded between two ends of the horizontal chord member (101) and the vertical supporting chord member (201) above the horizontal chord member (101), and the bottom ends of the vertical supporting chords (201) are respectively welded and fixed with a foundation tie plate (103).
3. The turnover split type unilateral supporting formwork steel support frame as claimed in claim 2, wherein: one side of the foundation section (1) close to the shear wall is connected with the lower-layer main structure through foundation bolts (6).
4. The turnover split type unilateral supporting formwork steel support frame as claimed in claim 2, wherein: the position that corresponds first bolt hole (206) and second bolt hole (207) on connecting plate (4) is seted up with the third bolt hole (404) of the two assorted, and connecting plate (4) divide into first connecting plate (401), second connecting plate (402) and third connecting plate (403) three kinds according to the difference of its position of setting, vertical support chord member (201) junction node is located in first connecting plate (401), first diagonal web member (202) and second diagonal web member (302) junction node are located in second connecting plate (402), first horizontal web member (203) and basic section web member (102), second horizontal web member (301) junction node are located in third connecting plate (403), connecting plate (4) and connecting bolt (5) assemble basic section (1) and multistage standard section into a fan-shaped steel support.
5. The turnover split type unilateral supporting formwork steel support frame as claimed in claim 3, wherein: rag bolt (6) include shank of bolt (601), double pin foot channel-section steel (602), connection gasket (603) and straight thread sleeve (604), shank of bolt (602) buries underground in lower floor's major structure concrete, and the vertical setting in its bottom, top and shear force wall are 45 contained angles and extend to the shaped steel support region, double pin foot channel-section steel (602) lead to long the setting along shear force wall extending direction, and the web of its two channel-section steels sets up relatively and presss from both sides tight shank of bolt (601), and its bottom pterygoid lamina subsides are established on basic festival (1) is close to reinforcement down tube (104) of shear force wall one side, connection gasket (603) and straight thread sleeve (604) overlap in proper order from bottom to top and establish on shank of bolt (601) to compress tightly the top pterygoid lamina of two channel-section steels of double pin foot channel-section.
6. The turnover split type unilateral supporting formwork steel support frame as claimed in claim 1, wherein: the horizontal tie bar (7) is arranged at the first connecting rod (205) and the second connecting rod (304) at one side far away from the shear wall and is connected with the first connecting rod (205) and the second connecting rod (304) through fasteners, and the main keel (8) is erected on the first connecting rod (205) at one side close to the shear wall.
7. The turnover split type unilateral supporting formwork steel support frame as claimed in claim 6, wherein: one side of the section steel support, which is far away from the shear wall, is provided with an inclined strut (11), the top end of the inclined strut (11) is connected with a horizontal tie bar (7) through a fastener, and the bottom end of the inclined strut is fixedly connected with a ground anchor (12) anchored in floor concrete through a fastener.
8. The turnover split type unilateral supporting model steel bracket of claim 5, wherein: the interval that sets up of shaped steel support is not more than 1200mm, rag bolt (6) set up the interval and is not more than 200 mm.
9. The turnover split type unilateral supporting model steel bracket of claim 5, wherein: horizontal chord member (101), vertical support chord member (201) all adopt Q345 rank's double-pin 12.6# channel-section steel preparation, consolidate down tube (104) and adopt Q345 rank's 12.6# channel-section steel preparation, and the channel-section steel opening sets up downwards, basic festival web member (102), first oblique web member (202), first horizontal web member (203), second horizontal web member (301), second oblique web member (302) all adopt Q345 rank's double-pin L80 x 50 x 5 angle steel preparation, first connecting rod (205), second connecting rod (304) all adopt phi 48 x 3.0 steel pipe preparation, bolt bar (601) adopt HRB400 phi 25mm screw-thread steel preparation, double-pin foot (602) and main joist (8) all adopt Q345 rank's double-pin 10# channel-section steel preparation, secondary joist (9) adopt the flitch preparation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110223699.8A CN113027118B (en) | 2021-03-01 | 2021-03-01 | Can have enough to meet need and loose unilateral formwork steel support of piece together formula |
Applications Claiming Priority (1)
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| CN114737789A (en) * | 2022-04-28 | 2022-07-12 | 中建八局第三建设有限公司 | Combined structure dismantling and external wall temporary reinforcing construction method |
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