CN107178149B - Crotch-shaped steel reinforced concrete combined structure and construction method thereof - Google Patents
Crotch-shaped steel reinforced concrete combined structure and construction method thereof Download PDFInfo
- Publication number
- CN107178149B CN107178149B CN201710497211.4A CN201710497211A CN107178149B CN 107178149 B CN107178149 B CN 107178149B CN 201710497211 A CN201710497211 A CN 201710497211A CN 107178149 B CN107178149 B CN 107178149B
- Authority
- CN
- China
- Prior art keywords
- steel
- concrete
- column
- crotch
- shaped
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/19—Three-dimensional framework structures
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
Abstract
The invention provides a crotch-shaped steel-reinforced concrete combined structure and a construction method thereof, wherein the combined structure comprises a foundation structure, a crotch-shaped steel structure and a reinforced concrete structure. The technical scheme of truly feasible construction method and capability of ensuring the integral stress of the combined structure is provided, so that the problems of contradiction of interpenetration and collision of crotch-shaped steel structures and reinforced concrete structure construction procedures, template supporting steps, connection of steel bars and steel structures, concrete pouring sequence and the like are solved, meanwhile, the construction progress is ensured, unreasonable arrangement of different work-class cross construction procedures is avoided, the construction phenomenon is caused, and the construction cost is saved.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a crotch-shaped steel reinforced concrete combined structure and a construction method thereof.
Background
Along with the development of economy and the development of building technology in China, high-rise buildings and large-span buildings become one of main directions of building structure development; in addition, modern buildings tend to have complex geometric shapes, pursue personalized structures and unique functions, so that a structural system with higher strength is needed to realize, and the existing combined structure is generated at present so as to effectively improve the structural strength of the building.
It is worth noting that the steel reinforced concrete Structure (SRC) made of the steel reinforced concrete wrapped by the concrete fully plays two materials of steel and concrete, so that the steel reinforced concrete member has the advantages of better anti-seismic performance, steel saving, concrete utilization coefficient improvement, convenience in construction and the like, and is widely applied to engineering construction. According to the above, the steel reinforced concrete composite structure can meet the requirements of complex modeling, large space and large span compared with other composite structures.
However, in the existing steel reinforced concrete composite structure construction process, the construction process of the steel structure and the concrete structure is often complicated, so that the actual construction brings the technical problems that the next construction is difficult, the template is not easy to close, the steel bar cannot be welded with the steel structure to form a whole, the concrete is not easy to pour and the like due to unreasonable process.
Disclosure of Invention
In view of the above, the present invention provides a crotch-shaped steel reinforced concrete composite structure and a construction method thereof, which includes a construction design of the crotch-shaped steel structure, a construction process of crossing the crotch-shaped steel structure and the reinforced concrete structure, and a construction process of connecting the crotch-shaped steel structure and the reinforced concrete structure to form an integral stress system, thereby providing a truly feasible construction method and a technical scheme capable of ensuring the integral stress of the composite structure and solving the technical problems.
In order to achieve the purpose, the technical scheme adopted by the invention is to provide a crotch-shaped steel-reinforced concrete composite structure, a foundation structure is provided with a foundation embedded part; the crotch-shaped steel structure comprises a steel column, crotch-shaped brackets and steel beams, wherein the crotch-shaped brackets are formed by a plurality of bracket seats which are radially arranged on the surface of the same height position of the steel column in a surrounding manner; the steel beam is connected with the bracket seat to extend radially; the reinforced concrete structure comprises column steel bars, plate steel bars, beam steel bars and concrete, wherein the column steel bars are arranged and bound along the steel columns to form a concrete column steel bar structure, the plate steel bars are arranged and bound on the steel columns, the crotch-shaped brackets and the steel beams to form a concrete slab steel bar structure, one ends of the beam steel bars are bound on the steel columns and the crotch-shaped brackets, and the other ends of the beam steel bars extend outwards from between two adjacent steel beams to form a concrete beam steel bar structure; the concrete is poured into the concrete column rebar structure, the concrete slab rebar structure and the concrete beam rebar structure to form the reinforced concrete structure.
In the embodiment of the combined structure, each bracket seat comprises an upper flange plate and a lower flange plate;
the bracket seats are provided with a lower connecting plate, a middle stiffening plate and an upper connecting plate which are used for connecting steel bars of the reinforced concrete structure; wherein the lower connecting plate is arranged on the lower surface of the lower flange plate of the bracket seat; the middle connecting plate is transversely arranged between the upper flange plate and the lower flange plate of the bracket seat and fixedly connected with the steel column; the middle stiffening plate is vertically connected between the upper flange plate and the lower flange plate; the upper connecting plate is arranged on the upper surface of the upper flange plate of the bracket seat.
In the combined structure embodiment of the invention, the column steel bar comprises a lower concrete column longitudinal bar vertically arranged on the periphery side of a lower steel column of the steel column, a lower concrete column stirrup vertically arranged on the periphery side of an upper steel column of the steel column, and an upper concrete column stirrup vertically arranged on the periphery side of the upper steel column; the slab reinforcing steel bars comprise concrete slab bottom reinforcing steel bars, concrete slab surface reinforcing steel bars, concrete slab bottom corner oblique reinforcing steel bars and concrete slab surface corner oblique reinforcing steel bars; binding and fixing the concrete slab bottom steel bars and the concrete slab surface steel bars on the lower plane and the upper plane of the steel column, the crotch-shaped bracket and the steel beam respectively, and forming a rectangular plate structure; the plate bottom corner oblique reinforcing ribs and the plate surface corner oblique reinforcing ribs are respectively bound on the lower plane corner and the upper plane corner of the rectangular plate structure; the beam steel bars comprise concrete beam bottom steel bars, concrete beam waist steel bars and concrete beam gluten; the concrete comprises lower steel column outer-packed concrete, crotch-shaped steel column inner concrete and upper outer-packed concrete; the lower steel column is coated with concrete and is cast outside a lower concrete column longitudinal rib and a lower concrete column stirrup of the column steel bar; the concrete in the crotch-shaped steel column is poured from the through hole of the upper steel column to form inside the steel column; the upper part is coated with concrete and is formed outside the upper part concrete column longitudinal bars, the upper part concrete column stirrups, the plate steel bars and the beam steel bars of the column steel bars through casting.
The invention also provides a construction method of the crotch-shaped steel reinforced concrete composite structure, which comprises the following steps:
step a: embedding a foundation embedded part;
step b: a crotch-shaped steel column is installed, the steel column is composed of a lower steel column and an upper steel column, and crotch-shaped brackets are arranged on the steel column at positions between the lower steel column and the upper steel column;
step c: binding lower concrete column longitudinal bars and lower concrete column stirrups in the range of the lower steel column;
step d: closing the lower concrete column template, and paving a concrete beam template and a concrete slab template;
step e: binding concrete beam bottom steel bars, concrete beam waist steel bars, concrete slab bottom steel bars and plate bottom corner oblique reinforcing bars;
step f: pouring concrete outside the lower steel column, pouring the concrete to the elevation below the bottom surface of the concrete slab, and pouring the concrete inside the crotch-shaped steel column from the through hole of the upper steel column;
step g: hoisting a steel beam and completing the connection work of the steel beam and the crotch-shaped bracket;
step h: binding concrete beam gluten, and simultaneously installing upper concrete column longitudinal ribs and upper concrete column stirrups;
step i: binding reinforcing steel bars on the surface of a concrete slab and oblique reinforcing steel bars on the corners of the surface of the concrete slab;
step j: and pouring the concrete covered on the upper part.
In the construction method embodiment of the invention, the step b further comprises the step of adopting a post-welding mode for the lower flange plates at two sides of the diagonal line of the crotch bracket.
In an embodiment of the construction method of the present invention, the step c further includes the following steps:
step c1: the lower concrete column longitudinal ribs are blocked by the lower flanges of the crotch-shaped brackets and cannot be upwards extended, and are welded with the lower connecting plates of the crotch-shaped brackets;
step c2: the lower concrete column longitudinal ribs are not blocked by the lower flanges of the crotch-shaped brackets and extend upwards to the top of the steel column;
step c3: the stirrups of the lower concrete column are shielded by the lower steel column and cannot be extended, and are welded with the lower steel column in a drag hook mode.
In an embodiment of the construction method of the present invention, the step e further includes the following steps:
step e1: the concrete beam bottom steel bar is welded with the middle connecting plate of the crotch-shaped bracket;
step e2: the concrete beam waist ribs are welded with the middle stiffening plates of the crotch-shaped brackets;
step e3: the concrete slab bottom steel bars pass through holes in the lower connecting plates of the crotch-shaped brackets, the middle concrete slab bottom steel bars are shielded by the lower steel columns, and the long concrete slab bottom steel bars cannot downwards bend the anchors into the concrete columns;
step e4: binding the oblique reinforcing ribs at the corners of the bottom of the plate.
In an embodiment of the construction method of the present invention, the step e1 further includes: and the concrete beam bottom steel bar is welded with the lower connecting plate of the crotch-shaped bracket.
In an embodiment of the construction method of the present invention, the step h further includes the following steps:
step h1: the concrete beam gluten is welded with the connecting side plate of the upper steel column;
step h2: the upper concrete column longitudinal ribs are welded with an upper connecting plate of the crotch-shaped bracket;
step h3: the stirrups of the upper concrete column are shielded by the upper steel column and cannot be extended, and are welded with the upper steel column in a drag hook mode.
In an embodiment of the construction method of the present invention, the step i further includes the following steps:
step i1: the concrete slab surface steel bars are shielded by the upper steel columns and cannot be extended, and are welded with the connecting side plates of the upper steel columns;
step i2: and the concrete slab bottom steel bar is anchored in a bending way and welded with the concrete slab surface steel bar.
The invention relates to a crotch-shaped steel skeleton concrete combined structure and a construction method thereof. The construction method is characterized in that the crotch-shaped steel structure is divided into a plurality of sub-components for construction, the connecting plates and the stiffening plates are arranged on the components, the steel bars are welded with the connecting plates, the steel bars are welded with the components, the steel bars and the components are avoided, the stiffening plates are optimally designed to ensure that concrete can be poured smoothly, the concrete is poured in batches, and the like, so that the problems of contradiction of alternate collision of construction procedures of the crotch-shaped steel structure and the reinforced concrete structure, template supporting steps, connection of the steel bars and the steel structure, concrete pouring sequence and the like are effectively solved, the construction progress is ensured, unreasonable arrangement of cross construction procedures of different work types is avoided, the phenomenon of construction is avoided, and the construction cost is saved.
Drawings
FIG. 1 is a top view of the crotch-shaped steel structure of the present invention.
FIG. 2 is a bottom view of the crotch-shaped steel structure of the present invention.
FIG. 3 is a partial enlarged view of the crotch-shaped steel column of the present invention.
FIG. 4 is a split view of the crotch-shaped bracket connection plate and stiffening plate of the present invention.
FIG. 5 is a schematic view showing the completion of the installation of the crotch-shaped steel column and the binding of the reinforcing steel bars of the lower concrete column of the present invention.
FIG. 6 is a top view of the formwork system of the crotch-shaped steel reinforced concrete composite structure of the present invention.
FIG. 7 is a bottom view of the formwork system of the crotch-shaped steel reinforced concrete composite structure of the present invention.
Fig. 8 is a schematic diagram showing the completion of binding of the concrete beam slab reinforcement and the installation of the steel beam according to the present invention.
Fig. 9 is a top view showing a concrete beam rebar and connection board connection mass according to the present invention.
Fig. 10 is a bottom view showing a concrete beam rebar and connection board connection in accordance with the present invention.
Fig. 11 is a schematic view of the construction of the through-length reinforcing bar of the concrete slab bottom of the present invention.
Fig. 12 is a schematic view of the construction of a concrete slab bottom mid-bend anchor bar of the present invention.
Fig. 13 is a plan view showing the crotch-shaped steel reinforced concrete composite structure of the present invention after the completion of the binding of the reinforcing bars.
FIG. 14 is a plan view showing the construction of the crotch-shaped steel reinforced concrete composite structure of the present invention after the concrete casting is completed.
Fig. 15 is a bottom view of the crotch-shaped steel reinforced concrete composite structure of the present invention after the concrete casting is completed.
The correspondence of the reference numerals with the components is as follows:
a base structure 10; a base embedment 11; a crotch-shaped steel structure 20; a steel column 21; a lower steel column 211; an upper steel column 212; a through hole 2121; a connecting side plate 213; crotch-shaped bracket 22; bracket holder 221; a lower connection plate 222; bracket holder 221; a through hole 2222; a middle connection plate 223; a central stiffener 224; an upper connection plate 225; a lower flange plate 226; upper flange plate 227; a steel beam 23; a reinforced concrete structure 30; column rebar 31; a concrete column rebar structure 310; lower concrete column longitudinal ribs 311; lower concrete column stirrups 312; upper concrete column longitudinal ribs 313; upper concrete column stirrups 314; plate steel bars 32; a concrete slab rebar structure 320; concrete slab bottom rebar 321; concrete slab face rebar 322; reinforcing ribs 323 at the corners of the bottom of the plate; the corner of the panel is inclined with a reinforcing rib 324; beam rebar 33; a concrete beam rebar structure 330; concrete beam bottom steel bars 331; concrete beam waist bars 332; concrete beam gluten 333; concrete 34; the lower steel column is encased with concrete 341; a crotch-shaped steel column internal concrete 342; the upper part is covered with concrete 343; a template 35; a lower concrete column template 351; a concrete beam template 352; concrete slab form 353.
Detailed Description
In order to facilitate the understanding of the present invention, the following description is provided with reference to the drawings and examples.
Referring to fig. 1 to 15, the present invention provides a crotch-shaped steel reinforced concrete composite structure and a construction method thereof, wherein the composite structure comprises a foundation structure 10, a crotch-shaped steel structure 20 and a reinforced concrete structure 30, the construction method mainly comprises the steps of installing a steel column 21 of the crotch-shaped steel structure 20 on the foundation structure 10 through a foundation embedded part 11, and then binding column steel bars 31, plate steel bars 32 and beam steel bars 33 of the reinforced concrete structure 30 at the crotch-shaped bracket 22 of the crotch-shaped steel structure 20, and casting concrete 34 after hoisting steel beams 23 of the crotch-shaped steel structure 20 to form the crotch-shaped steel reinforced concrete composite structure of the present invention.
As shown in fig. 5, a foundation embedded part 11 is arranged at the top of the foundation structure 10.
As shown in fig. 1 to 4, the crotch-shaped steel structure 20 includes a steel column 21, crotch-shaped brackets 22, and steel beams 23. Wherein the steel column 21 is composed of a lower steel column 211 and an upper steel column 212. The crotch-shaped bracket 22 is provided between a lower steel column 211 and an upper steel column 212 of the steel column 21, and the crotch-shaped bracket 22 includes: a plurality of bracket holders 221, and a lower connection plate 222, a middle connection plate 223, a middle stiffening plate 224 and an upper connection plate 225 which are arranged on the bracket holders 221.
The bracket seats 221 are radially fixed on the surface of the steel column 21 and are used for connecting the steel beams 23; in the embodiment of the present invention, the bracket seats 221 are four and are arranged on the circumference of the steel column 21 at the same height in a cross shape; it should be understood that the number of the bracket seats 221 is not limited to four, and may be adjusted according to actual construction requirements.
As shown in fig. 9 and 10, the lower connection plates 222, the middle connection plates 223, the middle stiffening plates 224 and the upper connection plates 225 are used to connect the steel bars of the reinforced concrete structure 30. As shown in fig. 1 to 4, the lower connecting plate 222 is disposed on the lower surface of the lower flange 226 of the bracket seat 221; the middle connecting plate 223 is transversely arranged between the upper flange plate 227 and the lower flange plate 226 of the bracket seat 221, and is fixedly connected with the steel column 21; the middle stiffening plate 224 is vertically connected between the upper flange plate 227 and the lower flange plate 226; the upper connection plate 225 is provided on the upper surface of the upper flange plate 227 of the bracket holder 221.
Further, as shown in fig. 3 and 4, the lower connection plate 222 may be provided with a plurality of U-shaped grooves 2221 or a plurality of through holes 2222 for the concrete slab bottom reinforcements 321 of the reinforced concrete structure 30 to pass through.
As shown in fig. 3 and fig. 4, in order to ensure that the concrete can be smoothly poured into the crotch-shaped bracket 22 during pouring, the middle stiffening plate 224 is not in a fully enclosed and sealed form, but is formed by a plurality of rectangular steel plates 2241 and inverted-M steel plates 2242, and the middle of the crotch-shaped bracket 212 at the corresponding position in the middle of the adjacent column longitudinal ribs adopts a form without stiffening plates or with an open U-shaped groove on the stiffening plates while force transmission connection of the stiffening plates is ensured at the positions of the lower concrete column longitudinal ribs 311 and the upper concrete column longitudinal ribs 313. The upper steel column 212 further comprises a connecting side plate 213 of the upper steel column 212.
As shown in fig. 5 to 15, the reinforced concrete structure 30 includes column bars 31 for arranging and binding to construct a concrete column bar structure 310, plate bars 32 for arranging and binding to construct a concrete slab bar structure 320, beam bars 33 for arranging and binding to construct a concrete beam bar structure 330, concrete 34, and a form 35 for casting the column.
As shown in fig. 5 and 13, the column reinforcement 31 includes a lower concrete column longitudinal reinforcement 311, a lower concrete column stirrup 312, an upper concrete column longitudinal reinforcement 313, and an upper concrete column stirrup 314. The lower concrete column longitudinal ribs 311 are vertically arranged on the periphery side of the lower steel column 211 of the steel column 21, and the lower concrete column stirrups 312 are bound and fixed on the lower concrete column longitudinal ribs 311; the upper concrete column longitudinal ribs 313 are vertically arranged on the periphery side of the upper steel column 212 of the steel column 21, and the upper concrete column stirrups 314 are bound and fixed on the upper concrete column longitudinal ribs 313.
As shown in fig. 8 and 13, the slab reinforcement 32 includes a concrete slab bottom reinforcement 321, a concrete slab surface reinforcement 322, a concrete slab bottom corner diagonal reinforcement 323, and a concrete slab surface corner diagonal reinforcement 324. The concrete slab bottom steel bar 321 and the concrete slab surface steel bar 322 are respectively bound and fixed on the lower plane and the upper plane of the steel column 21, the crotch-shaped bracket 22 and the steel beam 23, and form a rectangular plate structure; the plate bottom corner oblique reinforcing ribs 323 and the plate surface corner oblique reinforcing ribs 324 are respectively bound on the lower plane corner and the upper plane corner of the rectangular plate structure.
As shown in fig. 8, 9, 10 and 13, the beam steel bars 33 include concrete beam bottom steel bars 331, concrete beam waist steel bars 332 and concrete beam gluten bars 333. One end of the beam reinforcement 33 is bound to the steel column 21 and the crotch-shaped bracket 22, and the other end extends outwards from between two adjacent steel beams 23.
As shown in fig. 14 and 15, the concrete 34 includes a lower steel column exterior concrete 341, a crotch-shaped steel column interior concrete 342, and an upper exterior concrete 343. The lower steel column outsourcing concrete 341 is poured and formed outside the lower concrete column longitudinal bars 311 and the lower concrete column stirrups 312 of the column steel bars 31; the crotch-shaped steel column internal concrete 342 is formed inside the steel column 21 by casting from the through hole 2121 of the upper steel column 212; the upper cladding concrete 343 is cast outside the upper concrete column longitudinal bars 313, the upper concrete column stirrup 314, the plate bar 32, and the beam bar 33 of the column bar 31.
As shown in fig. 6, 14 and 15, the form 35 includes a lower concrete column form 351, a concrete beam form 352 and a concrete slab form 353. The lower concrete column template 351 is used for casting to form the lower steel column outsourcing concrete 341 after being installed; the concrete beam form 352 and the concrete slab form 353 are used to cast the upper cladding concrete 343 after installation.
As shown in fig. 3 and 4, the lower concrete column longitudinal ribs 311, the upper concrete column longitudinal ribs 313, the lower connecting plates 222, the middle stiffening plates 224 and the upper connecting plates 225 of the crotch-shaped bracket 22 are on the same vertical plane, so that the vertical stress of the structure is on the same plane, and the structural integrity is ensured.
The invention provides a crotch-shaped steel-reinforced concrete combined structure and a construction method, as shown in fig. 5, wherein the construction method is to pre-embed a foundation embedded part 11 first, and install a steel column 21 after the foundation structure 10 is poured and the strength grade of concrete is required. When the section size of the concrete column is less than 800mm x 800mm, the lower flange plates 226 on both sides of the diagonal line of the crotch-shaped bracket 22 are post-welded so that the concrete is poured into the lower steel column-encased concrete 341 from the void. Binding lower concrete column longitudinal ribs 311 and lower concrete column stirrups 312 within the range of the lower steel column 211; the lower concrete column longitudinal ribs 311 are shielded by the lower flange plates 226 of the crotch-shaped brackets 22 and cannot be upwards extended, are welded with the lower connecting plates 222 of the crotch-shaped brackets 22, and are welded with double sides, wherein the welding length is more than or equal to 6d; the lower concrete column longitudinal ribs 312 are not covered by the lower flange plates 226 of the crotch brackets 22, and extend upwards to the top of the steel column 21. The lower concrete column stirrup 312 is shielded by the lower steel column 211 and cannot be extended, and is welded with the lower steel column 211 in a drag hook mode.
As shown in fig. 6 and 7, the lower concrete column form 351 is closed, and the concrete beam form 352 and the concrete slab form 353 are laid.
As shown in fig. 8, binding concrete beam bottom steel bars 331, concrete beam waist steel bars 332, concrete slab bottom steel bars 321 and plate bottom corner oblique reinforcing bars 323; referring to fig. 9 and 10, when the concrete beam bottom reinforcement 331 is extended to the middle of the fork-shaped bracket 22, the concrete beam bottom reinforcement 331 is welded to the middle connection plate 223 of the fork-shaped bracket 22; when the concrete beam bottom steel bar 331 extends to the lower part of the crotch-shaped bracket 22, the concrete beam bottom steel bar 331 is welded with the lower connecting plate 222 of the crotch-shaped bracket 22, and double-sided welding is adopted, so that the welding length is more than or equal to 6d; the concrete beam waist rib 332 is welded to the middle stiffener 224 of the crotch-shaped bracket 22.
Referring to fig. 11 and 12, when the concrete bottom reinforcement 321 passes through the hole (the U-shaped groove 2221 or the through hole 2222) of the lower connecting plate 222 of the crotch bracket 22, the concrete bottom reinforcement 321 is constructed as shown in fig. 11, and both ends of the concrete bottom reinforcement 321 are anchored to the concrete bottom reinforcement 322 in an upward bending manner; when the middle concrete slab bottom steel bar 321 is blocked by the lower steel column 211 and cannot be anchored inwards by the long concrete slab bottom steel bar 321, the concrete slab bottom steel bar 321 is constructed in a form as shown in fig. 12, one end of the concrete slab bottom steel bar 321 is anchored upwards to be welded with the concrete slab surface steel bar 322, and the other end of the concrete slab bottom steel bar 321 penetrates into the concrete column and is anchored downwards.
As shown in fig. 8, the bottom corners of the tie plates are inclined to the reinforcing ribs 323. As shown in fig. 14 and 15, the lower steel column exterior concrete 341 is poured to the elevation below the bottom surface of the concrete slab, and the crotch-shaped steel column interior concrete 342 is poured from the through hole 2121 of the upper steel column 212. And hoisting the steel beam 23 and completing the connection work of the steel beam 23 and the crotch-shaped bracket 22.
As shown in fig. 13, the concrete beam gluten 333 is bound, and the upper concrete column longitudinal ribs 313 and the upper concrete column stirrups 314 are simultaneously installed; when the concrete beam gluten 333 extends to the middle of the upper steel column 212, the concrete beam gluten 333 is welded with the connection side plate 213; the upper concrete column longitudinal ribs 313 are welded with an upper connecting plate 225 of the crotch-shaped bracket 22, and double-sided welding is adopted, so that the welding length is more than or equal to 6d; the upper concrete column stirrup 314 is shielded from the upper steel column 212 and cannot be extended, and is welded to the upper steel column 212 in a drag hook manner. Binding concrete slab surface steel bars 322 and concrete slab surface corner oblique reinforcing ribs 324; the concrete slab surface steel bars 322 are shielded by the upper steel columns 212 and cannot be extended, and are welded with the connecting side plates 213; the concrete slab surface steel bars 322 are welded with the steel bars which are bent and anchored to the slab surface by the concrete slab bottom steel bars 321, and the length of the welding line is not less than 10d.
As shown in fig. 14 and 15, upper cladding concrete 343 is poured.
The invention relates to a crotch-shaped steel skeleton concrete combined structure and a construction method thereof. The crotch-shaped steel structure is divided into a plurality of sub-components for construction, a connecting plate and a stiffening plate are arranged on the components, steel bars are welded with the connecting plate, the steel bars are welded with the components, the steel bars are avoided from the components, and the stiffening plate is optimally designed to ensure that concrete can be poured smoothly, and the concrete is poured in batches. The problems of contradiction of interpenetration and collision of crotch-shaped steel structures and reinforced concrete structure construction procedures, template supporting steps, connection of steel bars and the steel structures, concrete pouring sequence and the like are solved, meanwhile, the construction progress is ensured, unreasonable arrangement of different work-class cross construction procedures is avoided, the construction phenomenon is caused, and the construction cost is saved.
The present invention has been described in detail with reference to the drawings and embodiments, and one skilled in the art can make various modifications to the invention based on the above description. Accordingly, certain details of the illustrated embodiments are not to be taken as limiting the invention, which is defined by the appended claims.
Claims (9)
1. A crotch-shaped steel-reinforced concrete composite structure, comprising:
the foundation structure is provided with a foundation embedded part;
the crotch-shaped steel structure comprises a steel column, crotch-shaped brackets and steel beams, wherein the crotch-shaped brackets are formed by a plurality of bracket seats which are radially arranged on the surface of the same height position of the steel column in a surrounding manner; the steel beam is connected with the bracket seat to extend radially;
the reinforced concrete structure comprises column steel bars, plate steel bars, beam steel bars and concrete, wherein the column steel bars are arranged and bound along the steel columns to form a concrete column steel bar structure, the plate steel bars are arranged and bound on the steel columns, the crotch-shaped brackets and the steel beams to form a concrete slab steel bar structure, one ends of the beam steel bars are bound on the steel columns and the crotch-shaped brackets, and the other ends of the beam steel bars extend outwards from between two adjacent steel beams to form a concrete beam steel bar structure; the concrete is poured into the concrete column reinforced structure, the concrete slab reinforced structure and the concrete beam reinforced structure to form the reinforced concrete structure;
the column reinforcement comprises a lower concrete column longitudinal reinforcement vertically arranged on the periphery side of a lower steel column of the steel column, a lower concrete column stirrup vertically arranged on the periphery side of an upper steel column of the steel column, and an upper concrete column stirrup vertically arranged on the periphery side of the upper steel column;
the slab reinforcing steel bars comprise concrete slab bottom reinforcing steel bars, concrete slab surface reinforcing steel bars, concrete slab bottom corner oblique reinforcing steel bars and concrete slab surface corner oblique reinforcing steel bars; binding and fixing the concrete slab bottom steel bars and the concrete slab surface steel bars on the lower plane and the upper plane of the steel column, the crotch-shaped bracket and the steel beam respectively, and forming a rectangular plate structure; the plate bottom corner oblique reinforcing ribs and the plate surface corner oblique reinforcing ribs are respectively bound on the lower plane corner and the upper plane corner of the rectangular plate structure;
the beam steel bars comprise concrete beam bottom steel bars, concrete beam waist steel bars and concrete beam gluten;
the concrete comprises lower steel column outer-packed concrete, crotch-shaped steel column inner concrete and upper outer-packed concrete; the lower steel column is coated with concrete and is cast outside a lower concrete column longitudinal rib and a lower concrete column stirrup of the column steel bar; the concrete in the crotch-shaped steel column is poured from the through hole of the upper steel column to form inside the steel column; the upper part is coated with concrete and is formed outside the upper part concrete column longitudinal bars, the upper part concrete column stirrups, the plate steel bars and the beam steel bars of the column steel bars through casting.
2. The crotch-shaped steel reinforced concrete composite structure according to claim 1, wherein:
each bracket seat comprises an upper flange plate and a lower flange plate;
the bracket seats are provided with a lower connecting plate, a middle stiffening plate and an upper connecting plate which are used for connecting steel bars of the reinforced concrete structure;
wherein the lower connecting plate is arranged on the lower surface of the lower flange plate of the bracket seat; the middle connecting plate is transversely arranged between the upper flange plate and the lower flange plate of the bracket seat and fixedly connected with the steel column; the middle stiffening plate is vertically connected between the upper flange plate and the lower flange plate; the upper connecting plate is arranged on the upper surface of the upper flange plate of the bracket seat, and the middle stiffening plate is composed of a plurality of rectangular steel plates and inverted M-shaped steel plates.
3. The construction method of the crotch-shaped steel-reinforced concrete composite structure is characterized by comprising the following steps of:
step a: embedding a foundation embedded part;
step b: a crotch-shaped steel column is installed, the steel column is composed of a lower steel column and an upper steel column, and crotch-shaped brackets are arranged on the steel column at positions between the lower steel column and the upper steel column;
step c: binding lower concrete column longitudinal bars and lower concrete column stirrups in the range of the lower steel column;
step d: closing the lower concrete column template, and paving a concrete beam template and a concrete slab template;
step e: binding concrete beam bottom steel bars, concrete beam waist steel bars, concrete slab bottom steel bars and plate bottom corner oblique reinforcing bars;
step f: pouring concrete outside the lower steel column, pouring the concrete to the elevation below the bottom surface of the concrete slab, and pouring the concrete inside the crotch-shaped steel column from the through hole of the upper steel column;
step g: hoisting a steel beam and completing the connection work of the steel beam and the crotch-shaped bracket;
step h: binding concrete beam gluten, and simultaneously installing upper concrete column longitudinal ribs and upper concrete column stirrups;
step i: binding reinforcing steel bars on the surface of a concrete slab and oblique reinforcing steel bars on the corners of the surface of the concrete slab;
step j: and pouring the concrete covered on the upper part.
4. The construction method of the crotch-shaped steel reinforced concrete composite structure according to claim 3, wherein the construction method comprises the following steps:
the step b further comprises the step that the lower flange plates on two sides of the diagonal line of the crotch-shaped bracket are welded after each other.
5. The construction method of the crotch-shaped steel reinforced concrete composite structure according to claim 3, wherein the step c further comprises the steps of:
step c1: the lower concrete column longitudinal ribs are blocked by the lower flanges of the crotch-shaped brackets and cannot be upwards extended, and are welded with the lower connecting plates of the crotch-shaped brackets;
step c2: the lower concrete column longitudinal ribs are not blocked by the lower flanges of the crotch-shaped brackets and extend upwards to the top of the steel column;
step c3: the stirrups of the lower concrete column are shielded by the lower steel column and cannot be extended, and are welded with the lower steel column in a drag hook mode.
6. The construction method of the crotch-shaped steel reinforced concrete composite structure according to claim 3, wherein the step e further comprises the steps of:
step e1: the concrete beam bottom steel bar is welded with the middle connecting plate of the crotch-shaped bracket;
step e2: the concrete beam waist ribs are welded with the middle stiffening plates of the crotch-shaped brackets;
step e3: the concrete slab bottom steel bars pass through holes in the lower connecting plates of the crotch-shaped brackets, the middle concrete slab bottom steel bars are shielded by the lower steel columns, and the long concrete slab bottom steel bars cannot downwards bend the anchors into the concrete columns;
step e4: binding the oblique reinforcing ribs at the corners of the bottom of the plate.
7. The method for constructing a crotch-shaped steel reinforced concrete composite structure according to claim 6, wherein the step e1 further comprises: and the concrete beam bottom steel bar is welded with the lower connecting plate of the crotch-shaped bracket.
8. The construction method of the crotch-shaped steel reinforced concrete composite structure according to claim 3, wherein the step h further comprises the steps of:
step h1: the concrete beam gluten is welded with the connecting side plate of the upper steel column;
step h2: the upper concrete column longitudinal ribs are welded with an upper connecting plate of the crotch-shaped bracket;
step h3: the stirrups of the upper concrete column are shielded by the upper steel column and cannot be extended, and are welded with the upper steel column in a drag hook mode.
9. The construction method of the crotch-shaped steel reinforced concrete composite structure according to claim 3, wherein the step i further comprises the steps of:
step i1: the concrete slab surface steel bars are shielded by the upper steel columns and cannot be extended, and are welded with the connecting side plates of the upper steel columns;
step i2: and the concrete slab bottom steel bar is anchored in a bending way and welded with the concrete slab surface steel bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710497211.4A CN107178149B (en) | 2017-06-27 | 2017-06-27 | Crotch-shaped steel reinforced concrete combined structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710497211.4A CN107178149B (en) | 2017-06-27 | 2017-06-27 | Crotch-shaped steel reinforced concrete combined structure and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107178149A CN107178149A (en) | 2017-09-19 |
| CN107178149B true CN107178149B (en) | 2023-05-02 |
Family
ID=59844355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710497211.4A Active CN107178149B (en) | 2017-06-27 | 2017-06-27 | Crotch-shaped steel reinforced concrete combined structure and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107178149B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112144329A (en) * | 2019-06-28 | 2020-12-29 | 比亚迪股份有限公司 | Track support assembly, assembly method thereof, track and track traffic system |
| CN111236651A (en) * | 2020-03-12 | 2020-06-05 | 江苏沪宁钢机股份有限公司 | Construction process of huge irregular multi-break-angle special-shaped support node |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06212690A (en) * | 1993-01-19 | 1994-08-02 | Fujita Corp | Jointing structure of column and beam |
| JP2005220699A (en) * | 2004-02-09 | 2005-08-18 | Shimizu Corp | Reinforcement structure of existing column and reinforcing method for the same |
| JP5607384B2 (en) * | 2010-02-22 | 2014-10-15 | 前田建設工業株式会社 | Construction method for beam-column joints |
| CN201991083U (en) * | 2011-01-19 | 2011-09-28 | 天津市建筑设计院 | Beam column node of composite structural system of steel and concrete |
| CN103306378B (en) * | 2013-06-19 | 2015-04-01 | 泰兴市第一建筑安装工程有限公司 | Construction method of multidirectional through concrete filled steel tubular column beam joint provided with steel corbels and ring beam |
| CN104264900B (en) * | 2014-09-12 | 2016-08-24 | 江苏沪宁钢机股份有限公司 | A kind of huge many brackets steel framework post and preparation method thereof |
| US10024047B2 (en) * | 2015-08-17 | 2018-07-17 | Tindall Corporation | Method and apparatus for constructing a concrete structure |
| CN105133791A (en) * | 2015-09-11 | 2015-12-09 | 杭州江润科技有限公司 | Construction method for prefabricated thick plate steel rib concrete column variable cross-section transformation node structure |
| CN207277545U (en) * | 2017-06-27 | 2018-04-27 | 中国建筑第八工程局有限公司 | Fork-shaped steel reinforced concrete combining structure |
-
2017
- 2017-06-27 CN CN201710497211.4A patent/CN107178149B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107178149A (en) | 2017-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105569224A (en) | Concrete-filled steel tube edge restraint overlapping integrated shear wall and preparing and installation methods thereof | |
| CN214696113U (en) | Connection structure of assembled prefabricated floor and composite beam | |
| CN113026993B (en) | Assembly type combined connecting beam window opening component, structure and manufacturing and construction method | |
| CN106639052B (en) | Fabricated structure system of steel plate concrete shear wall and construction method thereof | |
| CN214739251U (en) | Assembled combination tie-beam window opening component and connection structure thereof | |
| CN108661169B (en) | Assembly type side frame beam component and design method | |
| CN105178358B (en) | Vertical supporting system for reverse construction method and construction method of vertical supporting system | |
| CN107859059B (en) | Connecting node structure of prefabricated sandwich side wall and prefabricated superposed bottom plate and construction method thereof | |
| CN107178149B (en) | Crotch-shaped steel reinforced concrete combined structure and construction method thereof | |
| CN110499869A (en) | Bracket composite beam and its construction method | |
| JP5869717B1 (en) | Existing concrete structure reinforcement structure | |
| CN210421568U (en) | Assembled beam and plate structure | |
| CN112144412A (en) | Construction method of prefabricated assembled intercolumnar tie beam | |
| CN107313507B (en) | Construction method for node structure of fabricated concrete frame overhead core column | |
| CN111764509B (en) | Reinforced concrete connecting joint with steel pipe core for prefabricated beam column and connecting method | |
| CN214884632U (en) | Assembled shaped steel composite wall | |
| CN210976322U (en) | Bracket superposed beam and forming equipment thereof | |
| CN210976062U (en) | Assembled frame construction combination system | |
| CN205382595U (en) | Integral shear force wall of steel pipe concrete edge constraint coincide | |
| KR20070073022A (en) | Concrete mold for slab and construction method of slab using the same | |
| CN210288825U (en) | Assembled and cast-in-situ combined beam plate structure | |
| CN108755938B (en) | Steel core area node of assembled concrete frame | |
| CN113026994B (en) | Assembly type double-connecting-beam combined shear wall component, structure and manufacturing and construction method thereof | |
| KR102111883B1 (en) | Construction Method of Transfer girder | |
| CN220790318U (en) | Full prefabricated steel node concrete composite beam structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |