CN113356371A - Construction method of assembled frame structure system - Google Patents
Construction method of assembled frame structure system Download PDFInfo
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- CN113356371A CN113356371A CN202110702677.XA CN202110702677A CN113356371A CN 113356371 A CN113356371 A CN 113356371A CN 202110702677 A CN202110702677 A CN 202110702677A CN 113356371 A CN113356371 A CN 113356371A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5806—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile
- E04B1/5812—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile of substantially I - or H - form
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
- E04B1/5831—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially rectangular form
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- Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a construction method of an assembly type frame structure system, belonging to the technical field of assembly type buildings, comprising the following steps: installing a precast concrete column, wherein the precast concrete column is provided with a plurality of spaces, the bottom of the precast concrete column is provided with a grouting sleeve, and the top of the precast concrete column is pre-embedded with reserved steel bars corresponding to the grouting sleeve: hoisting a prefabricated beam-column node, wherein the prefabricated beam-column node comprises a hoop plate, a through steel beam and a stiffening rib, and integrally hoisting the prefabricated beam-column node to the upper part of the prefabricated concrete column so that the reserved steel bars penetrate through the interior of the hoop plate along the vertical direction; then, connecting the outer wall of the hoop plate and the precast concrete column together by adopting a fastener and a limiting plate; mounting a frame beam and a secondary beam; installing a steel bar truss floor support plate; and (5) pouring floor concrete. The invention has the advantages of beam through and column through; the components are prefabricated, the assembly is simple, and the site construction and installation are convenient.
Description
Technical Field
The invention belongs to the technical field of fabricated buildings, and particularly relates to a construction method of a fabricated frame structure system.
Background
With the continuous development of building structure forms, more and more novel hybrid frame structures are emerging. A reinforced concrete column-steel beam combined frame structure (RCS combined frame structure for short) has the advantages of a traditional steel structure and a reinforced concrete frame structure, and is more and more widely applied to engineering application. Compared with a steel structure, the steel structure has the characteristics of saving steel and increasing the rigidity of a building, and simultaneously has higher stability and durability; compared with a concrete structure, the concrete structure has the characteristics of reducing the section size of the member, increasing the structural span and increasing the ductility of the structure. In order to ensure reliable force transmission between the reinforced concrete column and the steel beam, a reasonable structural form is very important.
The conventional RCS composite frame structure node is roughly classified into a beam through type and a column through type. The beam is through, namely the steel beam is not cut off when passing through the concrete column, and a small-section profile steel is welded on the continuous steel beam, is mainly applied to a middle-high building structure and is a continuation of a steel structure; the column is through type, namely the steel beam is cut off at the intersection of the steel beam and the concrete column, the concrete column is communicated and is not penetrated by the steel beam, and the steel beam cannot integrally and continuously penetrate through the concrete column but is connected to a cylindrical steel plate in a node area of the concrete column. However, the existing column through type node structure is very complex, the requirement on the construction technology is high, direct transmission of force is blocked due to the truncation of the steel beam flange, and although the direct transmission of force can be compensated by various structural measures, the transmission direction of force is inevitably changed, and finally, the rule that the force is transmitted according to the shortest path is violated.
In addition, at present, prefabricated external wallboard mainly has two kinds of modes with the connection of major structure: firstly, the external wall panel connecting steel bars connected by the line supports are easy to collide with the main structure steel bars, and the connecting steel bars cannot completely avoid a beam end encryption area when being hung on a frame beam, so that the calculated rigidity of the main structure is greatly influenced, and the expected safety and reliability cannot be achieved; secondly, point supporting connection is adopted, point supporting belongs to flexible connection, but the externally-hung wall panel in the prior art is connected through point supporting not only has a complex structure, but also is complicated in construction.
Therefore, in the field of assembly type building technology, there is still a need for research and improvement on the construction method of the assembly type frame structure system, which is also a research focus and emphasis in the field of assembly type building technology at present, and is the starting point of the present invention.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is as follows: the construction method of the assembly type frame structure system has the advantages of beam through and column through, ensures the beam through, ensures the stress continuity of the column by combining the assembly type grouting sleeve technology, and is also regarded as through; and the components are prefabricated, the assembly is simple, and the site construction and installation are convenient.
In order to solve the technical problems, the technical scheme of the invention is as follows: a construction method of an assembly type frame structure system comprises the following steps:
A) installing a plurality of precast concrete columns which are arranged at intervals, wherein grouting sleeves are arranged at the bottoms of the precast concrete columns, and reserved steel bars corresponding to the grouting sleeves are pre-buried at the tops of the precast concrete columns; every precast concrete post adopts two at least bearing diagonal to fix temporarily:
B) hoisting a prefabricated beam-column node, wherein the prefabricated beam-column node comprises a hoop plate, a penetrating steel beam and a stiffening rib, the hoop plate is of a columnar structure with an upper opening and a lower opening, an opening for the penetrating steel beam to penetrate through is formed in the column wall of the hoop plate, and the penetrating steel beam is provided with an extending end positioned on the outer side of the hoop plate; the stiffening ribs are arranged between the wing plates penetrating through the steel beams and the inner walls of the hoop plates;
hoisting the prefabricated beam column node to the upper part of the prefabricated concrete column integrally, enabling the reserved steel bars to penetrate through the interior of the hoop plate along the vertical direction, and enabling the penetrating ends of the reserved steel bars to be matched with the grouting sleeves of the prefabricated concrete column on the upper layer; then, connecting the outer wall of the hoop plate and the precast concrete column together by adopting a fastener and a limiting plate;
C) installing frame beams and secondary beams, fixedly installing the frame beams between the extending ends of the penetrating steel beams opposite to each other on the adjacent precast beam column nodes, and then fixedly installing the secondary beams between the corresponding frame beams;
D) installing a steel bar truss floor bearing plate, laying the steel bar truss floor bearing plate according to design, and laying the end part of the steel bar truss floor bearing plate on the extending end of the penetrating steel beam or the frame beam; after the laying is finished, welding the studs; then installing a closed steel plate at the edge of the steel bar truss floor bearing plate;
E) and (5) pouring floor concrete.
As a modification, after the step E), a step of installing the prefabricated exterior wall panel is further included.
As a further improvement, the upper part and the lower part of the prefabricated external wallboard are respectively provided with two groups of upper connecting structures which are symmetrical left and right and two groups of lower connecting structures which are symmetrical left and right, two groups of adjusting structures are arranged between the two groups of lower connecting structures, and each group of adjusting structures is close to the lower connecting structure on the corresponding side;
the upper connecting structure and the lower connecting structure respectively comprise an embedded plate, an embedded bolt, a connecting angle steel and a locking nut, the embedded plate is embedded in the inner surface of the prefabricated external wall-hanging panel, one part of the embedded bolt is embedded in the prefabricated external wall-hanging panel, the other part of the embedded bolt extends out of the embedded plate, a vertical long hole is formed in a vertical plate of the connecting angle steel, and an extending end of the embedded bolt penetrates through the vertical long hole and is in threaded connection with the locking nut; the bending openings of the connecting angle steel of the upper connecting structure and the connecting angle steel of the lower connecting structure are oppositely arranged;
the adjusting structure comprises an adjusting embedded part, and vertical adjusting bolts are arranged on the adjusting embedded part.
As a further improvement, when the prefabricated external wall panel is installed, the method comprises the following steps:
pre-assembling the connecting angle steel in the upper connecting structure and the lower connecting structure to the pre-embedded bolt by adopting the locking nut; simultaneously preassembling the vertical adjusting bolt onto the adjusting embedded part;
when the installation, hoist prefabricated externally-hanging wallboard makes vertical adjusting bolt supports and leans on corresponding on the frame roof beam, through vertical adjusting bolt adjustment prefabricated externally-hanging wallboard's elevation guarantees prefabricated externally-hanging wallboard position is accurate, then will go up connection structure with down among the connection structure connecting angle steel's diaphragm rigid coupling respectively in corresponding the frame roof beam, fastens at last lock nut accomplishes the installation.
As a further improvement, a plurality of supporting pieces are arranged at intervals on the outer side of the frame beam, a square steel beam is arranged on the upper portion of each supporting piece, the vertical adjusting bolts abut against the square steel beam on the lower portion, and a transverse plate of the connecting angle steel of the lower connecting structure is welded on the square steel beam on the lower portion; and the transverse plate of the connecting angle steel of the upper connecting structure is welded on the supporting piece at the upper part.
As a further improvement, the prefabricated external wall panel comprises a modeling plate, an outer leaf layer, a heat insulation layer and an inner leaf layer, wherein the modeling plate and the outer leaf layer are poured together; the heat-insulating layer is positioned between the outer page layer and the inner page layer, and the upper connecting structure, the lower connecting structure and the adjusting structure are all arranged on the inner page layer; the upper side and the lower side of the prefabricated external wall panel are respectively provided with a tongue-and-groove.
As a further improvement, the adjusting embedded part is a channel steel, the channel steel comprises a bottom plate and two side plates perpendicular to the bottom plate, and the vertical adjusting bolt is arranged on the bottom plate.
As an improvement, the penetrating steel beam is cross-shaped and comprises a first steel beam and two second steel beams which are respectively positioned at two sides of the first steel beam, the first steel beam penetrates through the hoop plate, the hoop plate is positioned in the middle of the first steel beam, one end of each second steel beam penetrates through the corresponding column wall of the hoop plate and is fixedly connected to the first steel beam, and the other end of each second steel beam extends out of the hoop plate; and rib passing holes for allowing parts of the reserved steel bars to pass through are formed in wing plates of the first steel beam and the second steel beam.
As a further improvement, the first steel beam and the second steel beam are both H-shaped steel; two ends of a web plate of the first steel beam are both provided with first connecting holes, and an extending end of the web plate of the second steel beam is both provided with second connecting holes; the two ends of the frame beam are provided with third connecting holes; and in the step C), fixedly connecting the end part of the frame beam with the extending end of the first steel beam or the extending end of the second steel beam by using a splicing plate and a bolt.
As an improvement, the steel bar truss floor bearing plate comprises a plurality of floor bearing plate units which are spliced together, and each floor bearing plate unit comprises a galvanized profiled steel sheet and a steel bar truss welded with the galvanized profiled steel sheet into a whole.
After the technical scheme is adopted, the invention has the beneficial effects that:
the construction method of the assembly type frame structure system comprises the steps that during construction, a precast concrete column is installed firstly, then the precast beam column node is integrally hoisted to the position above the precast concrete column, reserved steel bars of the precast concrete column penetrate through the interior of a hoop plate, and the penetrating ends of the reserved steel bars are matched with grouting sleeves of the precast concrete column on the upper layer; then, the hoop plate and the precast concrete column are connected together by adopting the fasteners and the limiting plates, so that the precast beam column nodes and the precast concrete column are independently precast, the on-site welding is not needed, the transportation is convenient, and the assembly is simple; the prefabricated beam-column joint comprises the hoop plate, the penetrating steel beam and the stiffening rib, so that the penetration of the beam is ensured; the stress continuity of the column is guaranteed by combining the assembled grouting sleeve technology, and the column is also regarded as through, so that the prefabricated beam-column joint has the advantages of beam through and column through; then, sequentially installing a frame beam, a secondary beam and a steel bar truss floor bearing plate; and then pouring floor concrete. The construction method of the assembly type frame structure system provided by the invention has the advantages of beam through and column through, not only ensures the beam through, but also ensures the stress continuity of the column by combining the assembly type grouting sleeve technology, and is also regarded as through; the components are fully prefabricated, the assembly is simple, and the site construction and installation are convenient; meanwhile, for the compressed precast concrete column, the high-strength reinforced concrete is more economical than structural steel, so that the manufacturing cost can be greatly reduced; the prefabricated beam column node and the frame beam can provide larger span, have better ductility and energy consumption capability, have superior construction performance compared with other forms of frame structures, are convenient to install, improve the working efficiency and shorten the construction period.
The prefabricated external wall panel installation step is designed, so that when the prefabricated external wall panel is installed, the connecting angle steel in the upper connecting structure and the lower connecting structure is preassembled to the position of the embedded bolt by adopting the locking nut, meanwhile, the vertical adjusting bolt is preassembled on the adjusting embedded part, when the prefabricated external wall panel is installed, the prefabricated external wall panel is hoisted, the vertical adjusting bolt is abutted against the corresponding frame beam, the elevation of the prefabricated external wall panel is adjusted by the vertical adjusting bolt, the position of the prefabricated external wall panel is ensured to be accurate, then the transverse plates of the connecting angle steel in the upper connecting structure and the lower connecting structure are respectively and fixedly connected to the corresponding frame beam, and finally, the locking nut is fastened to finish the installation; the on-site no-humidity operation is realized, the construction is convenient, the assembly is simple, and the on-site construction and installation are convenient; the free rotation of the prefabricated external wall panel is realized through the four embedded bolts and the two vertical adjusting bolts; vertical long holes are designed on the connecting angle steel, and the rotation amount of the prefabricated external wallboard is controlled by controlling the aperture and the length of the vertical long holes.
Because the outside of frame roof beam all is equipped with a plurality of support piece, support piece's upper portion is equipped with the square steel roof beam, has made things convenient for frame roof beam and last connection structure and lower connection structure's connection like this, has also made things convenient for the adjustment simultaneously.
Because the prefabricated external wallboard comprises the modeling plate, the outer leaf layer, the heat insulation layer and the inner leaf layer, the prefabricated external wallboard integrates decoration and heat insulation, the link of building external decoration is omitted, and the construction period is shortened.
Because the adjusting embedded part is the channel steel, the adjusting embedded part has simple structure and low cost.
Because all seted up the muscle hole on the pterygoid lamina of first girder steel, second girder steel to dodge and reserve the reinforcing bar, convenient assembly.
The two ends of the web plate of the first steel beam are both provided with first connecting holes, the extending end of the web plate of the second steel beam is both provided with second connecting holes, and the two ends of the frame beam are both provided with third connecting holes; the splice plate and the bolts are adopted to facilitate the connection of the first steel beam or the second steel beam and the frame beam.
Because steel bar truss building carrier plate includes a plurality of building carrier plate units of concatenation together, steel bar truss building carrier plate can directly lay the roof beam along with the construction load like this on, carries out simple steel bar engineering, alright concreting.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope covered by the contents disclosed in the present invention.
FIG. 1 is a schematic structural view of a precast concrete column after installation in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a prefabricated beam column node after being hoisted in the embodiment of the invention;
FIG. 3 is a schematic structural view of the precast beam-column node of FIG. 2;
FIG. 4 is a schematic view of a through steel beam construction;
FIG. 5 is a schematic view of the structure of the hoop plate;
FIG. 6 is an enlarged schematic view of a stiffener;
FIG. 7 is a schematic view of the structure of the frame beam after mounting in an embodiment of the present invention;
FIG. 8 is a schematic structural view of an embodiment of the present invention after installation of secondary beams;
fig. 9 is a schematic structural diagram of a steel bar truss floor deck laid according to an embodiment of the invention;
fig. 10 is a schematic structural view of the steel bar truss floor deck in the embodiment of the invention after the laying is completed;
FIG. 11 is a schematic view of the embodiment of the present invention after the stud is welded;
FIG. 12 is a schematic view of the structure of an embodiment of the present invention after installation of a closure steel plate;
FIG. 13 is a schematic structural view of the embodiment of the present invention after concrete is poured on the floor slab;
FIG. 14 is a perspective view of a prefabricated wall panel according to an embodiment of the present invention;
FIG. 15 is a perspective view of FIG. 14 from another perspective;
FIG. 16 is a perspective view of a connecting angle iron in the lower connecting structure in the embodiment of the present invention;
FIG. 17 is a schematic structural view of a prefabricated wall panel according to an embodiment of the present invention after installation;
FIG. 18 is a sectional view A-A of FIG. 17;
FIG. 19 is an enlarged partial view of FIG. 18 at B;
FIG. 20 is an enlarged partial view at C of FIG. 18;
FIG. 21 is a flow chart of a method of constructing a fabricated frame structure system according to an embodiment of the present invention;
in the figure: 1. prefabricating a concrete column; 11. reserving a steel bar; 12. obliquely supporting; 2. prefabricating beam column joints; 21. a hoop plate; 211. an opening; 22. penetrating through the steel beam; 221. a first steel beam; 222. a second steel beam; 223. passing through the rib holes; 224. a first connection hole; 225. a second connection hole; 226. a first support plate; 227. a second support plate; 23. a stiffening rib; 24. a limiting plate; 25. a bolt; 3. a frame beam; 31. splicing plates; 32. a support member; 33. a square steel beam; 4. a steel bar truss floor support plate; 41. galvanized profiled steel sheets; 42. a steel bar truss; 43. a stud; 44. sealing the steel plate; 5. prefabricating an external wallboard; 51. a moldboard; 52. an outer page layer; 53. a heat-insulating layer; 54. an inner page layer; 55. a tongue-and-groove; 6. an upper connecting structure; 61. pre-burying a plate; 62. embedding bolts in advance; 63. connecting angle steel; 64. locking the nut; 7. a lower connecting structure; 71. pre-burying a plate; 72. embedding bolts in advance; 73. connecting angle steel; 731. a vertical long hole; 74. locking the nut; 8. adjusting the structure; 81. adjusting the embedded part; 82. a vertical adjusting bolt; 9. and a secondary beam.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present specification, the terms "front", "rear", "left", "right", "inner", "outer" and "middle" are used for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship between the terms and the corresponding parts are also regarded as the scope of the present invention without substantial changes in the technical contents.
As shown in fig. 1 to 21, the construction method of the assembly type frame structure system comprises a plurality of layers of frame structures which are arranged up and down, wherein each layer of frame structure comprises a precast concrete column 1, precast beam column nodes 2, frame beams 3, a steel bar truss floor bearing plate 4 and a precast external wall plate 5; the method comprises the following steps:
A) as shown in fig. 1 and 13, a plurality of precast concrete columns 1 are installed, the precast concrete columns 1 are arranged at intervals, grouting sleeves (not shown in the figure) are arranged at the bottoms of the precast concrete columns 1, and reserved steel bars 11 corresponding to the grouting sleeves are pre-buried at the tops of the precast concrete columns; each precast concrete column 1 is temporarily fixed using at least two diagonal braces 12.
B) As shown in fig. 2 to 6, hoisting the precast beam-column node 2, where the precast beam-column node 2 includes a hoop plate 21, a through steel beam 22 and a stiffening rib 23, the hoop plate 21 is a columnar structure with an upper opening and a lower opening, an opening 211 for the through steel beam 22 to pass through is formed in a column wall of the hoop plate 21, and the through steel beam 22 has an extending end located outside the hoop plate 21; the stiffening ribs 23 are arranged between the wing plates penetrating through the steel beam 22 and the inner walls of the hoop plates 21, a plurality of stiffening ribs 23 can be arranged according to needs, and specifically, the hoop plates 21, the penetrating steel beam 22 and the stiffening ribs 23 of the precast beam-column node 2 are connected together in a welding mode;
integrally hoisting the prefabricated beam column node 2 to the upper part of the prefabricated concrete column 1, enabling the reserved steel bars 11 to penetrate through the interior of the hoop plate 21 along the vertical direction, and enabling the penetrating ends of the reserved steel bars 11 to be matched with grouting sleeves of the prefabricated concrete column on the upper layer; then, connecting the outer wall of the hoop plate 21 and the precast concrete column 1 together by adopting a fastener and a limiting plate 24; the fasteners are preferably bolts 25. The prefabricated beam column node 2 and the prefabricated concrete column 1 are prefabricated independently, on-site welding is not needed, transportation is convenient, and assembly is simple; the precast beam-column joint 2 comprises the hoop plate 21, the penetrating steel beam 22 and the stiffening ribs 23, so that the penetration of the beam is ensured; and the stress continuity of the column is ensured by combining the assembled grouting sleeve technology, and the prefabricated beam-column joint is also regarded as through, so that the prefabricated beam-column joint has the advantages of beam through and column through.
It should be noted that the grouting sleeve of the precast concrete column 1 at the bottom layer is matched with the reserved steel bars on the independent foundation (not shown in the figure); the grouting sleeves of the precast concrete columns 1 on other layers are matched with the reserved steel bars of the precast concrete columns 1 on the lower layer.
In a specific implementation manner of the embodiment of the present invention, as shown in fig. 3 and 4, the penetrating steel beam 22 is cross-shaped, and includes a first steel beam 221 and two second steel beams 222 respectively located at two sides of the first steel beam 221, the first steel beam 221 penetrates through the hoop plate 21, the hoop plate 21 is located in the middle of the first steel beam 221, one end of each second steel beam 222 penetrates through a corresponding column wall of the hoop plate 21 and is fixedly connected to the first steel beam 221, specifically, the second steel beam may be fixed by welding, and the other end of each second steel beam extends out of the hoop plate 21.
Of course, depending on the number of frame beams (not shown) connected by the precast beam-column node 2, the through steel beam may be in other forms, for example, the through steel beam is T-shaped (not shown), and one second steel beam 222 may be omitted from fig. 4, such that the through steel beam includes a first steel beam and a second steel beam, the first steel beam penetrates through the hoop plate and the hoop plate is located at the middle of the first steel beam, one end of the second steel beam penetrates through the column wall of the hoop plate and is fixedly connected to the first steel beam, and the other end of the second steel beam extends out of the hoop plate.
In a specific implementation manner of the embodiment of the present invention, the wing plates of the first steel beam 221 and the second steel beam 222 are respectively provided with a bar passing hole 223 through which a part of the reserved steel bar passes, so as to avoid the reserved steel bar 11.
In a specific implementation manner of the embodiment of the present invention, the first steel beam 221 and the second steel beam 222 are both H-shaped steel. Of course, as an alternative, the first steel beam 221 and the second steel beam 222 may also be made of i-steel, etc., and will not be described herein.
In a specific implementation manner of the embodiment of the present invention, in order to facilitate connection with the frame beam 3, both ends of the web of the first steel beam 221 are provided with first connection holes 224, and the extending ends of the web of the second steel beam 222 are provided with second connection holes 225.
In a specific implementation manner of the embodiment of the present invention, in order to improve the strength of the first steel beam 221 and the second steel beam 222, a first supporting plate 226 perpendicular to the web plate of the first steel beam 221 is further disposed between the upper wing plate and the lower wing plate; a second support plate 227 perpendicular to the web of the second steel beam 222 is also disposed between the upper and lower wing plates.
In a specific implementation manner of the embodiment of the invention, the hoop plate 21 is formed by enclosing a pressure-bearing steel plate, so that the pressure-bearing steel plate is used as a pouring template, and the construction process and the construction cost are reduced.
C) As shown in fig. 7 and 8, the frame beam 3 and the secondary beam 9 are installed, as shown in fig. 7, the frame beam 3 is fixedly installed between the extending ends of the opposite penetrating steel beams 22 on the adjacent precast beam column nodes 2, and specifically, third connecting holes (not shown in the figure) are formed at both ends of the frame beam 3; the end part of the frame beam 3 is fixedly connected with the extending end of the first steel beam or the extending end of the second steel beam by the splicing plate 31 and the bolt, so that the first steel beam or the second steel beam is conveniently connected with the frame beam 3; the secondary beams 9 are then fixedly mounted between the respective frame beams 3, as shown in fig. 8.
D) As shown in fig. 9 and 10, the steel bar truss floor support plate 4 is installed, the steel bar truss floor support plate 4 is laid according to design, the end portion of the steel bar truss floor support plate 4 is laid on the extending end penetrating through the steel beam 22 or the frame beam 3, specifically, the steel bar truss floor support plate 4 comprises a plurality of floor support plate units which are spliced together, and each floor support plate unit comprises a galvanized profiled steel sheet 41 and a steel bar truss 42 welded with the galvanized profiled steel sheet 41 into a whole. Therefore, the steel bar truss floor support plate 4 can be directly paved on a beam along with construction load, simple steel bar engineering is carried out, and concrete can be poured. After laying is completed, the studs 43 are welded, as shown in fig. 11; then, as shown in fig. 12, a closed steel plate 44 is installed at the edge of the steel-bar truss floor deck 4.
E) As shown in fig. 13, floor concrete is poured.
F) As shown collectively in fig. 17-20, installing a prefabricated wall panel;
as shown in fig. 14 to 20, two sets of upper connecting structures 6 and two sets of lower connecting structures 7 are respectively arranged on the upper and lower portions of the prefabricated external wall panel 5, two sets of adjusting structures 8 are installed between the two sets of lower connecting structures 7, and each set of adjusting structures 8 is close to the lower connecting structure 7 on the corresponding side,
the upper connecting structure 6 comprises an embedded plate 61, an embedded bolt 62, a connecting angle steel 63 and a locking nut 64, wherein the embedded plate 61 is embedded in the inner surface of the prefabricated external wall panel 5, one part of the embedded bolt 62 is embedded in the prefabricated external wall panel 5, the other part of the embedded bolt extends out of the embedded plate 61, a vertical long hole (not shown in the figure) is formed in the vertical plate of the connecting angle steel 63, and the extending end of the embedded bolt 62 penetrates through the vertical long hole and is in threaded connection with the locking nut 64.
The lower connecting structure 7 comprises an embedded plate 71, an embedded bolt 72, a connecting angle steel 73 and a locking nut 74, wherein the embedded plate 71 is embedded in the inner surface of the prefabricated external wall panel 5, one part of the embedded bolt 72 is embedded in the prefabricated external wall panel 5, the other part of the embedded bolt extends out of the embedded plate 71, a vertical long hole 731 is formed in the vertical plate of the connecting angle steel 73, and the extending end of the embedded bolt 72 penetrates through the vertical long hole 731 and is in threaded connection with the locking nut 74. As shown in fig. 15, the bent openings of the connecting angles 63 of the upper connecting structure and the connecting angles 73 of the lower connecting structure are arranged to face each other.
The adjusting structure 8 comprises an adjusting embedded part 81, wherein vertical adjusting bolts 82 are arranged on the adjusting embedded part 81, and the vertical adjusting bolts 82 are abutted to the corresponding frame beams 3.
When the prefabricated external wall panel 5 is installed, the method comprises the following steps:
preassembling the connecting angle steel 63 in the upper connecting structure 6 to the embedded bolt 62 by using the locking nut 64 in advance, and preassembling the connecting angle steel 73 in the lower connecting structure 7 to the embedded bolt 72 by using the locking nut 74; meanwhile, the vertical adjusting bolt 82 is preassembled on the adjusting embedded part 81;
during installation, hoisting the prefabricated external wallboard 5, enabling the vertical adjusting bolts 82 to abut against the corresponding frame beams 3, adjusting the elevation of the prefabricated external wallboard 5 through the vertical adjusting bolts 82 to ensure that the position of the prefabricated external wallboard 5 is accurate, then fixedly connecting the transverse plate of the connecting angle steel 63 of the upper connecting structure 6 with the corresponding frame beams 3, fixedly connecting the transverse plate of the connecting angle steel 73 of the lower connecting structure 7 with the corresponding frame beams 3, and finally fastening the locking nuts 64 and 74 to finish installation; the construction method has the advantages of no wet operation on site, convenient construction, cleanness and tidiness. The prefabricated external wall panel 5 can freely rotate through the four embedded bolts and the two vertical adjusting bolts 82; vertical long holes are designed on the connecting angle steel 63 and the connecting angle steel 73, and the rotation amount of the prefabricated external wall panel 5 is controlled by controlling the aperture and the length of the vertical long holes.
In a specific implementation manner of the embodiment of the present invention, as shown in fig. 19 and 20, a plurality of supporting members 32 are disposed at intervals on the outer sides of the frame beams 3, a square steel beam 33 is disposed on the upper portion of each supporting member 32, the vertical adjusting bolt 82 abuts against the square steel beam 33 on the lower portion, and the cross plate of the connecting angle steel 73 of the lower connecting structure 7 is welded to the square steel beam 33 on the lower portion; the cross plate of the connecting angle steel 63 of the upper connecting structure 6 is welded on the supporting piece 32 on the upper part, so that the frame beam 3 is convenient to be connected with the upper connecting structure 6 and the lower connecting structure 7, and meanwhile, the adjustment is also convenient.
In a specific embodiment of the present invention, as shown in fig. 14 and 17, the prefabricated external wall panel 5 includes a molding board 51, an outer leaf layer 52, an insulating layer 53 and an inner leaf layer 54, the molding board 51 and the outer leaf layer 52 are cast together, specifically, the molding board 51 is produced in advance, the molding board 51 is placed in a mold (not shown in the figure), a mold release agent is applied on the mold, and outer leaf layer concrete is cast, so that the molding board 51 and the outer leaf layer 52 are cast together, compared with the prior art in which a plurality of sets of bottom molds are added in the mold (i.e. the molding board and the outer leaf layer are cast at one time), the production cost is greatly saved, and the external wall panel can be disassembled without using strength, and the manufacturing period is shortened; the heat preservation layer 53 is located between the outer leaf layer 52 and the inner leaf layer 54, and the upper connecting structure 6, the lower connecting structure 7 and the adjusting structure 8 are all arranged on the inner leaf layer 54, so that the prefabricated external wall panel 5 integrates decoration and heat preservation, the link of building external decoration is omitted, and the construction period is shortened.
In a specific implementation manner of the embodiment of the present invention, in order to facilitate the sealing between the upper prefabricated external wall panel and the lower prefabricated external wall panel, as shown in fig. 19 and 20, the upper and lower sides of the prefabricated external wall panel 5 are respectively provided with a tongue-and-groove 55. In order to effectively ensure the sealing of the outdoor part of the prefabricated external wall panel 5, the tongue-and-groove 55 of the prefabricated external wall panel 5 is sealed by using a foamed polyethylene rod (not shown) and a sealant (not shown).
In a specific implementation manner of the embodiment of the present invention, in order to make the adjusting embedded part 81 simple in structure and low in cost, as shown in fig. 15, the adjusting embedded part 81 is a channel steel, the channel steel includes a bottom plate and two side plates perpendicular to the bottom plate, and the vertical adjusting bolt 82 is disposed on the bottom plate.
It should be noted that, the fabricated frame structure system in the embodiment of the present invention further includes an independent foundation (not shown), an inner wall (not shown), and a stair (not shown), where the independent foundation may be cast-in-place or prefabricated; the inner wall can be made of autoclaved lightweight concrete wall boards; the stair can adopt a prefabricated plate type stair, and the structures and the installation modes of the independent foundation, the inner wall and the stair are all known in the field and are not described in detail herein.
In summary, the construction method of the fabricated frame structure system provided by the embodiment of the invention has the advantages of beam through and column through, not only ensures the beam through, but also ensures the stress continuity of the column by combining the fabricated grouting sleeve technology, and is also regarded as through; the components are fully prefabricated, the assembly is simple, and the site construction and installation are convenient; meanwhile, for the compressed precast concrete column, the high-strength reinforced concrete is more economical than structural steel, so that the manufacturing cost can be greatly reduced; the prefabricated beam column node and the frame beam can provide larger span, have better ductility and energy consumption capability, have superior construction performance compared with other forms of frame structures, are convenient to install, improve the working efficiency and shorten the construction period.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A construction method of an assembled frame structure system is characterized by comprising the following steps:
A) installing a plurality of precast concrete columns which are arranged at intervals, wherein grouting sleeves are arranged at the bottoms of the precast concrete columns, and reserved steel bars corresponding to the grouting sleeves are pre-buried at the tops of the precast concrete columns; every precast concrete post adopts two at least bearing diagonal to fix temporarily:
B) hoisting a prefabricated beam-column node, wherein the prefabricated beam-column node comprises a hoop plate, a penetrating steel beam and a stiffening rib, the hoop plate is of a columnar structure with an upper opening and a lower opening, an opening for the penetrating steel beam to penetrate through is formed in the column wall of the hoop plate, and the penetrating steel beam is provided with an extending end positioned on the outer side of the hoop plate; the stiffening ribs are arranged between the wing plates penetrating through the steel beams and the inner walls of the hoop plates;
hoisting the prefabricated beam column node to the upper part of the prefabricated concrete column integrally, enabling the reserved steel bars to penetrate through the interior of the hoop plate along the vertical direction, and enabling the penetrating ends of the reserved steel bars to be matched with the grouting sleeves of the prefabricated concrete column on the upper layer; then, connecting the outer wall of the hoop plate and the precast concrete column together by adopting a fastener and a limiting plate;
C) installing frame beams and secondary beams, fixedly installing the frame beams between the extending ends of the penetrating steel beams opposite to each other on the adjacent precast beam column nodes, and then fixedly installing the secondary beams between the corresponding frame beams;
D) installing a steel bar truss floor bearing plate, laying the steel bar truss floor bearing plate according to design, and laying the end part of the steel bar truss floor bearing plate on the extending end of the penetrating steel beam or the frame beam; after the laying is finished, welding the studs; then installing a closed steel plate at the edge of the steel bar truss floor bearing plate;
E) and (5) pouring floor concrete.
2. The method of constructing an assembled frame structure system according to claim 1, further comprising the step of installing prefabricated wall panels after step E).
3. The construction method of the fabricated frame structure system according to claim 2, wherein the upper and lower portions of the prefabricated external wall panel are respectively provided with two sets of upper connection structures and two sets of lower connection structures which are bilaterally symmetric, and two sets of adjustment structures are installed between the two sets of lower connection structures, and each set of adjustment structures is close to the lower connection structure of the corresponding side;
the upper connecting structure and the lower connecting structure respectively comprise an embedded plate, an embedded bolt, a connecting angle steel and a locking nut, the embedded plate is embedded in the inner surface of the prefabricated external wall-hanging panel, one part of the embedded bolt is embedded in the prefabricated external wall-hanging panel, the other part of the embedded bolt extends out of the embedded plate, a vertical long hole is formed in a vertical plate of the connecting angle steel, and an extending end of the embedded bolt penetrates through the vertical long hole and is in threaded connection with the locking nut; the bending openings of the connecting angle steel of the upper connecting structure and the connecting angle steel of the lower connecting structure are oppositely arranged;
the adjusting structure comprises an adjusting embedded part, and vertical adjusting bolts are arranged on the adjusting embedded part.
4. The method of constructing an assembled frame structure system according to claim 3, wherein the method of installing the prefabricated wall panels comprises the steps of:
pre-assembling the connecting angle steel in the upper connecting structure and the lower connecting structure to the pre-embedded bolt by adopting the locking nut; simultaneously preassembling the vertical adjusting bolt onto the adjusting embedded part;
when the installation, hoist prefabricated externally-hanging wallboard makes vertical adjusting bolt supports and leans on corresponding on the frame roof beam, through vertical adjusting bolt adjustment prefabricated externally-hanging wallboard's elevation guarantees prefabricated externally-hanging wallboard position is accurate, then will go up connection structure with down among the connection structure connecting angle steel's diaphragm rigid coupling respectively in corresponding the frame roof beam, fastens at last lock nut accomplishes the installation.
5. The construction method of the fabricated frame structure system according to claim 4, wherein a plurality of supporting members are arranged at intervals outside the frame beams, square steel beams are arranged on the upper portions of the supporting members, the vertical adjusting bolts abut against the square steel beams on the lower portions, and transverse plates of the connecting angle steels of the lower connecting structure are welded on the square steel beams on the lower portions; and the transverse plate of the connecting angle steel of the upper connecting structure is welded on the supporting piece at the upper part.
6. The method of constructing an assembled frame structure system of claim 3, wherein the prefabricated external wall panels comprise a moldboard, an outer leaf layer, an insulating layer and an inner leaf layer, the moldboard and the outer leaf layer are cast together; the heat-insulating layer is positioned between the outer page layer and the inner page layer, and the upper connecting structure, the lower connecting structure and the adjusting structure are all arranged on the inner page layer; the upper side and the lower side of the prefabricated external wall panel are respectively provided with a tongue-and-groove.
7. The method for constructing an assembled frame structure system according to claim 3, wherein the adjusting embedded part is a channel steel, the channel steel comprises a bottom plate and two side plates perpendicular to the bottom plate, and the vertical adjusting bolt is arranged on the bottom plate.
8. The method of constructing an assembled frame structure system according to claim 1, wherein the through steel beams are cross-shaped and include a first steel beam and two second steel beams respectively located at both sides of the first steel beam, the first steel beam penetrates the hoop plate and the hoop plate is located at a middle portion of the first steel beam, one end of each of the second steel beams passes through a corresponding column wall of the hoop plate and is fixedly connected to the first steel beam, and the other end of each of the second steel beams extends out of the hoop plate; and rib passing holes for allowing parts of the reserved steel bars to pass through are formed in wing plates of the first steel beam and the second steel beam.
9. The method of constructing a fabricated frame structure system according to claim 8, wherein the first steel beam and the second steel beam are both H-section steel; two ends of a web plate of the first steel beam are both provided with first connecting holes, and an extending end of the web plate of the second steel beam is both provided with second connecting holes; the two ends of the frame beam are provided with third connecting holes; and in the step C), fixedly connecting the end part of the frame beam with the extending end of the first steel beam or the extending end of the second steel beam by using a splicing plate and a bolt.
10. The method of constructing an assembled frame structure system of claim 1, wherein the steel truss deck comprises a plurality of deck units spliced together, the deck units comprising galvanized profiled steel sheets and steel trusses welded together with the galvanized profiled steel sheets.
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