CN114382172A - Fully-assembled building and building method thereof - Google Patents
Fully-assembled building and building method thereof Download PDFInfo
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- CN114382172A CN114382172A CN202111614248.3A CN202111614248A CN114382172A CN 114382172 A CN114382172 A CN 114382172A CN 202111614248 A CN202111614248 A CN 202111614248A CN 114382172 A CN114382172 A CN 114382172A
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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
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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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a fully assembled building and a building method thereof. The foundation of the fully-assembled building is connected with the prefabricated column through a grouting sleeve process; prefabricating floor lap joint areas on two sides of a prefabricated layer of the prefabricated superposed beam respectively; prefabricating a bridging support at the joint of the prefabricated superposed beams of the prefabricated floor slab; two ends of the precast beam are respectively connected with the precast columns, and the beam gluten and the beam structural steel bars of the precast beam respectively extend into the precast columns and are connected with the column structural steel bars of the precast columns in a crisscross manner; the prefabricated floor slab is lapped on a floor slab lapping area of the prefabricated beam through a lapping support, and plate construction steel bars of the prefabricated floor slab extend into a cast-in-situ layer of the prefabricated beam and are connected with stirrups and beam surface steel bars in the cast-in-situ layer in a longitudinal and transverse staggered mode; the side of the splicing seam of the adjacent precast floor slabs is symmetrically provided with a rabbet and a post-cast strip, and additional steel bars extending into the cast-in-situ layer of the adjacent precast beams are placed in the post-cast strip; and integrally casting the precast beam cast-in-place layer, the connecting nodes of the precast beam and the precast column and the post-cast strip in place. The invention has simple production and manufacture and quick assembly.
Description
Technical Field
The invention relates to an assembly type building, in particular to a full assembly type building and a building method thereof.
Background
Buildings assembled from prefabricated elements at the site are called fabricated buildings. That is, with the development of modern industrial technology, building houses can be made in batches and sets like machine production, by prefabricating house components (beams, panels, columns, etc.) at a factory and then transporting them to a construction site for assembly. Compared with the cast-in-place operation of the traditional building, the assembly type building has the advantages of greatly reducing the cast-in-place operation, having higher building efficiency and being more environment-friendly in construction, thereby being more and more widely applied.
However, the existing assembly type building components are complex in production design and slow in assembly speed, and have a lot of cast-in-place operations, the usage amount of the template is large, so that the field construction speed is influenced, and the construction cost is increased.
Disclosure of Invention
The invention aims to solve the technical problems that the existing assembly type building is complex in component structure, slow in assembly and multiple in-situ casting operation, and provides a full assembly type building and a construction method thereof.
In order to solve the technical problem, the invention provides a full-assembly type building which comprises a foundation, prefabricated columns, prefabricated beams and prefabricated floor slabs and has the following structural characteristics:
a grouting sleeve is embedded at the bottom of the prefabricated column, a column structural steel bar extends out of the upper part of the prefabricated column, and a first internal thread sleeve is embedded in the side surface of the prefabricated column connected with the prefabricated beam;
the prefabricated beam is a prefabricated superposed beam, the prefabricated superposed beam comprises a prefabricated layer, a cast-in-place layer and a steel reinforcement framework, floor overlapping areas for overlapping the prefabricated floor slab are integrally prefabricated on two sides of the prefabricated layer respectively, and second internal thread sleeves are pre-buried in the bottom surfaces of two ends of the prefabricated layer respectively;
the prefabricated floor slab comprises a fully prefabricated concrete slab body, slab construction steel bars extend out of the periphery of the slab body respectively, and a junction support for lapping on the prefabricated layer is prefabricated at the joint of a prefabricated superposed beam of the slab body;
connecting reinforcing steel bars matched with the grouting sleeves at the bottoms of the prefabricated columns are pre-buried on the foundation, and the connecting reinforcing steel bars of the foundation are connected with the grouting sleeves of the prefabricated columns through a grouting sleeve process;
in the building process, the second internal thread sleeve of the precast beam and the first internal thread sleeve of the precast column are temporarily connected through steel angle codes, and the beam gluten and the beam structural steel bars of the precast beam respectively extend into the precast column and are in crisscross connection with the column structural steel bars of the precast column;
the precast floor slab is lapped on the floor slab lapping area of the precast beam through the lapping support, and the plate construction steel bars of the precast floor slab extend into the cast-in-situ layer of the precast beam and are connected with the stirrups and beam surface steel bars in the cast-in-situ layer in a longitudinal and transverse staggered manner;
the prefabricated floor slabs are mutually spliced to form a whole floor slab of a building structure, the splicing seam sides of the adjacent prefabricated floor slabs are symmetrically provided with grooves and tongues, post-cast strips are arranged between the splicing seam side grooves and tongues of the adjacent prefabricated floor slabs, and additional steel bars extending into cast-in-place layers of the adjacent prefabricated beams are placed in the post-cast strips;
and the cast-in-situ layer of the precast beam, the connecting nodes of the precast beam and the precast columns and the post-cast strip are integrally formed by casting concrete in situ.
The prefabricated column, the prefabricated beam and the prefabricated floor slab are simple in structure and production and manufacture, the prefabricated column and the foundation are installed through the grouting sleeve process, the other components are simply overlapped, and the components are basically used for enclosing to form a cast-in-place interval, so that the utilization rate of a template is greatly reduced, the prefabricated column, the prefabricated beam and the prefabricated floor slab can be connected through one-time cast-in-place concrete, the assembly is quick, the influence on field construction is small, and the construction efficiency is improved.
Preferably, the column structural steel bars of the precast columns are higher than the upper surfaces of the precast beams and are connected with grouting sleeves at the bottoms of the precast columns of the next-storey building through an irrigation sleeve process. Because the quality of prefabricated post is less relatively, be fit for adopting ripe grout sleeve technology to install, not only guaranteed the structural stability of prefabricated post, and simplified the installation procedure of prefabricated post, improved the installation effectiveness.
Preferably, the distance between the lower parts of the grooves and the tongues of the adjacent prefabricated floor slabs is 50mm, and the distance between the upper parts of the grooves and the tongues is not less than 300 mm; the post-cast strip extends to the lower part of the tongue-and-groove of the adjacent precast floor slab. Therefore, the splicing seam sides of the adjacent precast floor slabs can be stably connected from top to bottom through the post-pouring belt, and the connection of the same span precast floor slabs is ensured.
Preferably, the additional steel bars comprise additional structural steel bars arranged close to the tongue-and-groove platform of the precast floor slab, additional plate gluten arranged close to the upper surface of the post-cast strip and a plurality of lifting hook steel bars arranged along the length direction of the post-cast strip, each lifting hook steel bar is formed by bending a section of steel bar, two ends of each lifting hook steel bar extend towards the inner sides of the tongue-and-groove platforms of the first precast floor slab and the second precast floor slab respectively, the middle part of each lifting hook steel bar extends towards the lower part of the tongue-and-groove to form a U-shaped lifting hook, and an additional plate bottom rib is arranged on each U-shaped lifting hook of each lifting hook steel bar.
Preferably, the two ends of the additional construction steel bars, the additional plate gluten and the additional plate bottom tendon respectively extend into the adjacent cast-in-situ layer of the precast beam, so that the post-cast strip and the cast-in-situ layer of the precast beam are integrally formed, and the installation stability of the precast floor slab is improved.
Preferably, the lifting hook steel bars are arranged along the length direction of the post-cast strip at intervals of 200-600 mm, so that the strength of all parts at the bottom of the post-cast strip is consistent, and the overall strength of the post-cast strip is guaranteed.
Preferably, the width of the floor slab overlapping area is 50mm-100mm, the width of the abutment is 50mm-100mm, and the width of the floor slab overlapping area is matched with the width of the abutment so as to ensure that the precast floor slab is reliably overlapped on the precast beam and ensure the installation reliability of the precast floor slab.
Based on the same inventive concept, the invention also provides a construction method of the fully-assembled building, which comprises the following steps:
1) after the on-site terrace is leveled and tamped, the foundation construction is started, and connecting steel bars are reserved at the installation positions of the prefabricated columns;
2) aligning the grouting sleeve at the bottom of the prefabricated column according to the grouting sleeve process, sleeving the grouting sleeve into the reserved connecting steel bars on the foundation to install the prefabricated column, and grouting and fixing the prefabricated column after the prefabricated column is installed in place;
3) after all the prefabricated columns are fixed, mounting the prefabricated beam, adopting steel angle codes as temporary supports between the bottoms of two ends of a prefabricated layer of the prefabricated beam and the side surfaces of the prefabricated columns, arranging point supports at the bottom of the prefabricated layer of the prefabricated beam, mounting beam gluten of the prefabricated beam, extending two ends of the beam gluten to the upper parts of the prefabricated columns, and connecting the beam gluten with column structural steel bars extending out of the prefabricated columns in a criss-cross manner, and arranging the middle parts of the beam surface tendons in reserved stirrups on the prefabricated beam and connecting the beam gluten and the stirrups into a whole;
4) installing precast floor slabs, wherein the width of a lap joint area of the floor slabs is not less than 50mm when a bordering support of the precast floor slabs is lapped on a precast layer of a precast beam, the distance between the lower parts of the grooves and the tongues of the adjacent precast floor slabs is 50mm, the distance between the upper parts of the grooves and the tongues is not less than 300mm, post-cast strips are arranged between the grooves and the tongues of the adjacent precast floor slabs, additional steel bars are placed in the post-cast strips, and the whole span of precast floor slabs are connected into a whole through the post-cast strips;
5) the cast-in-place layer of the precast beam, the connection node of the precast column and the precast beam and the post-cast strip are cast in place, and the installation of the first-layer building structure is completed;
6) after the first layer of building structure reaches a certain strength, repeating the step 2-5 to install the upper layer of building structure, and repeating the steps until all the building structures of each layer are completely installed;
7) and after the uppermost layer of building structure reaches a certain strength, the steel corner brace is gradually dismantled from bottom to top.
Compared with the prior art, the invention has the beneficial effects that:
the invention has the advantages of less overall engineering cast-in-place operation of the fully-assembled building, construction time saving, less template consumption, saving of engineering templates, no need of supporting the bottom of the prefabricated floor slab, rapid assembly of the overall structure and construction cost saving, and only the connecting nodes of the prefabricated beam and the prefabricated column and the bottom of the post-cast strip need to adopt templates.
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 introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a single-story building structure of the fully-fabricated building of the present invention.
Fig. 2 is a schematic view of a two-story building structure of the fully-fabricated building of the present invention.
Fig. 3 is a schematic perspective view of a prefabricated column.
Fig. 4 is a perspective view (top view) of the precast beam.
Fig. 5 is a second perspective view (bottom view) of the precast beam.
Fig. 6 is a perspective view of the steel corner brace.
Fig. 7 is a perspective view of a precast floor slab.
Fig. 8 is a block diagram of adjacent precast floor slabs.
Fig. 9 is a schematic structural diagram of a connection node of a precast beam and a precast column.
FIG. 10 is a schematic view of a post-cast strip structure at a splice joint between adjacent precast floor slabs.
Fig. 11 is a structural schematic view of a connection node of a precast beam and a precast floor slab.
Detailed Description
The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.
For convenience of description, the relative positional relationship of the components, such as: the descriptions of the upper, lower, left, right, etc. are described with reference to the layout directions of the drawings in the specification, and do not limit the structure of the present patent.
As shown in fig. 1 and 2, an embodiment of the fully-fabricated building of the present invention includes precast columns 1, precast girders 2, precast floor slabs 3, and steel angle yards 4.
As shown in fig. 3, the prefabricated column 1 is connected with a foundation (not shown) by a grouting sleeve process. The bottom of prefabricated post 1 is pre-buried grout sleeve 11, and post structural reinforcement 13 is stretched out on upper portion, and pre-buried first internal thread sleeve 12 in the side of prefabricated post 1 and precast beam 2 are connected.
As shown in fig. 4 and 5, the precast beam 2 is a precast composite beam, which includes a precast layer 21, a cast-in-place layer (not shown) and a steel reinforcement frame 22, the precast layer 21 is precast in a factory, the cast-in-place layer is cast in place after being installed in place, and both sides of the precast layer 21 are respectively precast in an integrated manner to form a floor slab overlapping area 211 for overlapping the precast floor slab 3. In the present embodiment, the width of the floor slab overlapping region 211 is 50mm, but obviously, the width of the floor slab overlapping region 211 is not limited thereto, and may be adaptively changed according to the floor slab span, etc. in practical use, and is usually 50mm to 100mm wide. The steel bar framework 22 comprises a series of stirrups 221 arranged in sequence along the length direction of the beam body and a plurality of straight reinforcements 222 arranged in parallel with the length direction of the beam body, wherein the straight reinforcements 222 comprise beam surface reinforcements 2221 arranged on the upper part of a cast-in-place layer and beam construction reinforcements 2222 arranged on the lower part of a prefabricated layer 21, the lower parts of the stirrups 221 are pre-embedded in the prefabricated layer 21, the upper parts of the stirrups 221 extend out of the prefabricated layer 21 and extend into the cast-in-place layer, the beam construction reinforcements 2222 are pre-embedded in the prefabricated layer 21, the beam surface reinforcements 2221 are connected with the stirrups 221 and are cast in place in the cast-in-place layer, and two ends of the beam surface reinforcements 2221 and the beam construction reinforcements 2222 respectively extend out of the beam body and extend into the prefabricated columns 1. In specific implementation, the beam surface ribs 2221 are embedded in the cast-in-place layer before being cast in place. In order to facilitate the temporary connection between the precast beam 2 and the precast column 1, the second internal thread sleeves 212 are respectively embedded at the bottoms of the two ends of the precast layer 21.
As shown in fig. 9, after all the prefabricated columns 1 are installed and fixed, the bottoms of the two ends of the prefabricated layer of the prefabricated beam 2 are temporarily connected with the side surfaces of the prefabricated columns 1 through steel angle connectors 4 by using fasteners 6 such as bolts, a connection node is formed between the end of the prefabricated beam 2 and the top of the prefabricated column 1, and in the connection node, the straight ribs 222 of the prefabricated beam 2 are connected with the column structural steel bars 13 of the prefabricated columns 1 in a criss-cross manner.
As shown in fig. 6, the steel angle 4 includes a first connection portion 41 and a second connection portion 42 connected at a right angle, the first connection portion 41 is provided with a first connection hole 411 matched with the first internal thread sleeve 12 pre-embedded on the side surface of the precast column, and the second connection portion 42 is provided with a second connection hole 421 matched with the second internal thread sleeve 212 pre-embedded on the end portion of the precast beam.
As shown in fig. 7 and 8, the precast floor slab 3 is a full precast concrete member, the slab thickness H of the precast floor slab 3 is the slab thickness of the building structure, and one standard precast floor slab 3 is spliced to form the whole floor slab of the building structure. The lap joint of the precast floor slab 3 and the precast beam 2 is provided with a bridging support 31, the width of the bridging support 31 is 50mm-100mm, and the length of the bridging support 31 is consistent with the length of the lap joint side of the precast floor slab 3. The width of the abutment 31 matches the width of the floor slab overlap 211, for example, the width of the floor slab overlap 211 is 50mm, and the width of the abutment 31 is also 50 mm. The abutment 31 is preferably formed by widening or lengthening the prefabricated floor 3. The tongue-and-groove 32 is arranged at the splicing seam side of the precast floor slab 3, the height of the lower part of the tongue-and-groove 32 is slightly half of the thickness of the precast floor slab, and the distance between the upper part and the lower part of the tongue-and-groove is not less than 125 mm. The prefabricated floor 3 is extended around the slab construction bars 33, respectively, to facilitate connection with surrounding members.
As shown in fig. 10, the splicing seam between the adjacent precast floor slabs 3 in the slab span range is in the form of a reserved post-cast strip 5, the distance between the lower parts of the grooves and the tongues of the adjacent precast floor slabs 3 is 50mm, the distance between the upper parts of the grooves and the tongues is not less than 300mm, that is, the width W of the post-cast strip is not less than 300mm, and the bottom of the post-cast strip extends to the lower parts of the grooves and the tongues of the adjacent precast floor slabs. Additional steel bars are placed in the post-cast strip 5. The additional reinforcing steel bars comprise additional structural reinforcing steel bars 51 arranged close to the groove platform of the precast floor slab, additional plate gluten 52 arranged close to the upper surface of the post-cast strip and a plurality of lifting hook reinforcing steel bars 53 arranged at intervals of 200-600 mm along the length direction of the post-cast strip. The lifting hook reinforcing steel bar 53 is formed by bending a section of reinforcing steel bar, two ends of the lifting hook reinforcing steel bar respectively extend towards the inner side of the rabbet platform of the adjacent prefabricated floor slab, the middle part of the lifting hook reinforcing steel bar extends towards the lower part of the rabbet to form a U-shaped lifting hook, and an additional slab bottom rib 54 is arranged on each U-shaped lifting hook. The two ends of the additional construction steel bar 51, the additional plate gluten 52 and the additional plate bottom bar 54 respectively extend into the cast-in-situ layer of the adjacent precast beam 2.
The construction operation steps of the fully-assembled building of the invention are as follows:
1. after the on-site terrace is leveled and tamped, the foundation construction is started, and the grouting sleeve connecting steel bars are reserved at the installation position of the prefabricated column 1.
2. According to the grouting sleeve process, the grouting sleeve 11 of the prefabricated column 1 is aligned to the reserved grouting sleeve connecting steel bar on the foundation to install the prefabricated column 1, and the prefabricated column 1 is fixed in place through grouting after the prefabricated column 1 is installed in place.
3. After all the prefabricated columns 1 are fixed, the prefabricated beam 2 is installed, steel angle connectors 4 are used as temporary supports between the prefabricated beam 2 and the prefabricated columns 1, screws penetrate through first connecting holes 411 of the steel angle connectors 4 and are screwed into first internal thread sleeves 12 of the prefabricated columns 1, the steel angle connectors 4 are locked by nuts to achieve connection of the steel angle connectors 4 and the prefabricated columns 1, screws penetrate through second connecting holes 421 of the steel angle connectors 4 and are screwed into second internal thread sleeves 212 of the prefabricated beam 2, and the nuts are locked to achieve connection and support of the steel angle connectors 4 and the prefabricated beams 2; then, the bottom of the precast beam 2 is provided with a point support to ensure the firmness of the precast beam 2, then, the beam surface ribs 2221 of the precast beam 2 are installed, the two ends of the beam surface ribs 2221 extend to the upper part of the precast column 1 and are connected with the column structural steel bars 13 extending out of the upper part of the precast column 1 in a crisscross manner, and the middle part of the beam surface ribs 2221 is arranged in the stirrups 221 reserved on the precast beam 2 and is connected with the stirrups 221 into a whole to meet the structural design requirements. And the column structural steel bars 13 of the prefabricated columns 1 are higher than the upper surfaces of the prefabricated beams 2 and are connected with the prefabricated columns 1 of the next building layer through an irrigation sleeve process.
4. The precast floor slabs 3 are installed, the bordering supports 31 of the precast floor slabs 3 are lapped on the precast layer 21 of the precast beam 2 (as shown in fig. 11), the width of a floor slab lapping area 211 is not less than 50mm, the distance between the lower parts of the grooves and the tongues of the adjacent precast floor slabs 3 is 50mm, the distance between the upper parts of the grooves and the tongues is not less than 300mm, post-cast strips 5 are arranged at the splicing joints of the adjacent precast floor slabs 3, additional steel bars are placed in the post-cast strips 5, and the precast floor slabs 3 of the whole span are connected into a whole through the post-cast strips. The additional reinforcing steel bars comprise additional structural reinforcing steel bars 51 arranged close to the precast floor slab rabbet platform, additional plate gluten 52 arranged close to the upper surface of the post-cast strip and lifting hook reinforcing steel bars 53 arranged at intervals of 200-600 mm along the length direction of the post-cast strip. The lifting hook steel bar 53 is formed by bending a section of steel bar, two ends of the lifting hook steel bar respectively extend to the inner sides of the rabbet platforms of the adjacent prefabricated floor slabs 3 at the splicing seams, and the middle part of the lifting hook steel bar extends to the lower part of the rabbet to form a U-shaped lifting hook. An additional reinforcement bar 54 is placed over the U-shaped hook of each hook reinforcement bar 53. The two ends of the additional construction steel bar 51, the additional plate gluten 52 and the additional plate bottom bar 54 respectively extend into the cast-in-situ layer of the adjacent precast beam 2.
5. And (3) casting the cast-in-place layer of the precast beam 2, the connecting joint of the precast column 1 and the precast beam 2 and the splicing seam (namely, the post-cast strip 5) of the precast floor slab 3 in situ to complete the installation of the first-layer building structure.
6. And (4) after the first-layer building structure reaches a certain strength, repeating the step 2-5 to install the previous-layer building structure, and repeating the steps until all the building structures on each layer are completely installed.
7. And after the uppermost layer of building structure reaches a certain strength, the steel angle connector 4 is gradually removed from bottom to top.
The above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and those skilled in the art can make many possible variations and modifications to the technical solution of the present invention or modify equivalent embodiments using the technical content disclosed above without departing from the technical solution of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (9)
1. The utility model provides a full assembled building, includes basis, prefabricated post (1), precast beam (2) and precast floor slab (3), its characterized in that:
a grouting sleeve (11) is embedded at the bottom of the prefabricated column, column structural steel bars (13) extend out of the upper part of the prefabricated column, and a first internal thread sleeve (12) is embedded in the side surface, connected with the prefabricated beam, of the prefabricated column;
the prefabricated beam is a prefabricated superposed beam, the prefabricated superposed beam comprises a prefabricated layer (21), a cast-in-place layer and a steel reinforcement framework (22), floor overlapping areas (211) for overlapping the prefabricated floor (3) are respectively and integrally prefabricated on two sides of the prefabricated layer, and second internal thread sleeves (212) are respectively embedded in the bottom surfaces of two ends of the prefabricated layer;
the prefabricated floor slab comprises a fully prefabricated concrete slab body, slab structure steel bars (33) extend out of the periphery of the slab body respectively, and a junction support (31) used for being lapped on the prefabricated layer is integrally prefabricated at the connection part of prefabricated superposed beams of the slab body;
connecting reinforcing steel bars matched with the grouting sleeves at the bottoms of the prefabricated columns are pre-buried on the foundation, and the connecting reinforcing steel bars of the foundation are connected with the grouting sleeves of the prefabricated columns through a grouting sleeve process;
in the building process, the second internal thread sleeve of the precast beam and the first internal thread sleeve of the precast column are temporarily connected through steel angle codes, and the beam gluten and the beam structural steel bars of the precast beam respectively extend into the precast column and are in crisscross connection with the column structural steel bars of the precast column;
the precast floor slab is lapped on the floor slab lapping area of the precast beam through the lapping support, and the plate construction steel bars of the precast floor slab extend into the cast-in-situ layer of the precast beam and are connected with the stirrups and beam surface steel bars in the cast-in-situ layer in a longitudinal and transverse staggered manner;
the prefabricated floor slabs are mutually spliced to form a whole floor slab of a building structure, the splicing seam sides of adjacent prefabricated floor slabs are symmetrically provided with tongue-and-grooves (32), post-cast strips (5) are arranged between the splicing seam sides of the adjacent prefabricated floor slabs, and additional steel bars extending into cast-in-place layers of the adjacent prefabricated beams are placed in the post-cast strips;
and the cast-in-situ layer of the precast beam, the connecting nodes of the precast beam and the precast columns and the post-cast strip are integrally formed by pouring concrete.
2. The fully assembled building according to claim 1, wherein the column structural reinforcement of the precast column is higher than the upper surface of the precast beam and is connected with the precast column of the next story building through an irrigation sleeve process.
3. The fully assembled building of claim 1 wherein the lower rebates of adjacent precast floor slabs are spaced apart by 50mm and the upper rebates are spaced apart by no less than 300 mm.
4. A fully assembled building according to claim 3 wherein the post-cast strip extends to the lower rebate of the adjacent pre-cast floor slab.
5. The fully assembled building of claim 3, wherein the additional steel bars comprise additional construction steel bars (51) arranged close to the grooved platform of the precast floor slab, additional plate steel bars (52) arranged close to the upper surface of the post-cast strip and a plurality of lifting hook steel bars (53) arranged along the length direction of the post-cast strip, each lifting hook steel bar is formed by bending a section of steel bar, two ends of each lifting hook steel bar extend towards the inner sides of the grooved platforms of the first precast floor slab and the second precast floor slab respectively, the middle part of each lifting hook steel bar extends towards the lower part of the groove to form a U-shaped lifting hook, and an additional plate bottom steel bar (54) is arranged on the U-shaped lifting hook of each lifting hook steel bar.
6. The fully assembled building according to claim 5, wherein both ends of the additional construction steel bars (51), additional slab gluten (52) and additional slab bottom bars (54) extend into the cast-in-place layer of the adjacent precast beam (2), respectively.
7. The fully assembled building of claim 5, wherein the hanger bars are spaced at 200-600 mm intervals along the length of the post-cast strip.
8. The fully assembled building of claim 5 wherein the width of the floor slab lap is 50mm-100mm, the width of the bordering pedestal is 50mm-100mm, and the width of the floor slab lap matches the width of the bordering pedestal.
9. A method of constructing a fully assembled building according to any one of claims 1 to 8, including the steps of:
1) after the on-site terrace is leveled and tamped, the foundation construction is started, and connecting steel bars are reserved at the installation positions of the prefabricated columns;
2) aligning the grouting sleeve at the bottom of the prefabricated column according to the grouting sleeve process, sleeving the grouting sleeve into the reserved connecting steel bars on the foundation to install the prefabricated column, and grouting and fixing the prefabricated column after the prefabricated column is installed in place;
3) after all the prefabricated columns are fixed, mounting the prefabricated beam, adopting steel angle codes as temporary supports between the bottoms of two ends of a prefabricated layer of the prefabricated beam and the side surfaces of the prefabricated columns, arranging point supports at the bottom of the prefabricated layer of the prefabricated beam, mounting beam gluten of the prefabricated beam, extending two ends of the beam gluten to the upper parts of the prefabricated columns, and connecting the beam gluten with column structural steel bars extending out of the prefabricated columns in a criss-cross manner, and arranging the middle parts of the beam surface tendons in reserved stirrups on the prefabricated beam and connecting the beam gluten and the stirrups into a whole;
4) installing precast floor slabs, wherein the width of a lap joint area of the floor slabs is not less than 50mm when a bordering support of the precast floor slabs is lapped on a precast layer of a precast beam, the distance between the lower parts of the grooves and the tongues of the adjacent precast floor slabs is 50mm, the distance between the upper parts of the grooves and the tongues is not less than 300mm, post-cast strips are arranged between the grooves and the tongues of the adjacent precast floor slabs, additional steel bars are placed in the post-cast strips, and the whole span of precast floor slabs are connected into a whole through the post-cast strips;
5) the cast-in-place layer of the precast beam, the connection node of the precast column and the precast beam and the post-cast strip are cast in place, and the installation of the first-layer building structure is completed;
6) after the first layer of building structure reaches a certain strength, repeating the step 2-5 to install the upper layer of building structure, and repeating the steps until all the building structures of each layer are completely installed;
7) and after the uppermost layer of building structure reaches a certain strength, the steel corner brace is gradually dismantled from bottom to top.
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