CN117051965A - Assembled full prefabricated frame free of support, formwork supporting and outer frame and construction method thereof - Google Patents

Assembled full prefabricated frame free of support, formwork supporting and outer frame and construction method thereof Download PDF

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Publication number
CN117051965A
CN117051965A CN202310851355.0A CN202310851355A CN117051965A CN 117051965 A CN117051965 A CN 117051965A CN 202310851355 A CN202310851355 A CN 202310851355A CN 117051965 A CN117051965 A CN 117051965A
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CN
China
Prior art keywords
prefabricated
columns
pouring
support
frame
Prior art date
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Pending
Application number
CN202310851355.0A
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Chinese (zh)
Inventor
黄轩安
赵国民
余平
闫照福
史月霞
陈可楠
殷平雪
孙洪计
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Zhejiang Xinsheng Construction Group Co ltd
Original Assignee
Zhejiang Xinsheng Construction Group Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Zhejiang Xinsheng Construction Group Co ltd filed Critical Zhejiang Xinsheng Construction Group Co ltd
Priority to CN202310851355.0A priority Critical patent/CN117051965A/en
Publication of CN117051965A publication Critical patent/CN117051965A/en
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
    • 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
    • E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
    • 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
    • E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
    • E04B1/04—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
    • 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
    • E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
    • E04B1/04—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
    • E04B1/043—Connections specially adapted therefor
    • 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
    • E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
    • E04B1/04—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
    • E04B1/043—Connections specially adapted therefor
    • E04B1/046—Connections specially adapted therefor using reinforcement loops protruding from the elements
    • 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
    • E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
    • E04B1/21—Connections specially adapted therefor
    • 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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  • Engineering & Computer Science (AREA)
  • 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 an assembled full prefabricated frame without support, formwork support and outer frame and a construction method thereof, wherein the full prefabricated frame comprises a prefabricated floor slab, a prefabricated main beam and a prefabricated column; the utility model discloses a prefabricated girder, including prefabricated girder, post-cast strip groove face, prefabricated floor, prefabricated secondary beam both ends are set up respectively on the prefabricated post, prefabricated floor upper surface and prefabricated girder lapped three sides set up the post-cast strip groove face respectively, prefabricated floor remaining one side and prefabricated secondary beam integrated into one piece, prefabricated secondary beam both ends are set up respectively on the prefabricated girder, just prefabricated girder top forms the pouring passageway of intercommunication each other. The full precast slab has large thickness and large rigidity, directly achieves the design of bending strength, can realize the support-free and support-free operation, and greatly improves the site civilized construction level and the construction efficiency.

Description

Assembled full prefabricated frame free of support, formwork supporting and outer frame and construction method thereof
Technical Field
The invention relates to the technical field of building construction, in particular to an assembled full prefabricated frame free of support, formwork support and outer frame and a construction method thereof.
Background
Along with the rising and popularization of the fabricated building, more and more prefabricated fabricated construction structures are applied to the field of building engineering construction; the following problems also exist in the current assembly type building:
1) In the traditional assembly type building, the floor slab with the integral structure is usually a composite floor slab, the thickness of a precast slab of the composite floor slab is not smaller than 60mm, and the thickness of a post-pouring concrete composite layer is not smaller than 60mm. The joint is arranged in the middle, the connection mode of the post-cast strip of the steel bar which extends out of the floor slab can be adopted, and the width of the post-cast strip is not suitable to be less than 200mm. The indirect lap joint mode without the extending ribs can also be adopted, and the thickness of a post-cast concrete laminated layer of the concrete laminated floor slab is not less than 100mm and not less than 1.5 times of the thickness of a prefabricated plate. The reserved post-cast strip which extends out of the reinforcing steel bars is connected with more site wet operations than the fully prefabricated floor slab, and the post-cast strip needs to be subjected to formwork supporting and secondary concrete pouring; the indirect lap joint mode of the protruding ribs is avoided, the thickness of the floor slab needs to be more than 160mm, and compared with the thickness of a full prefabricated floor slab, the thickness of the floor slab is increased by more than 30%, so that the redundancy of the thickness of the structure plate is caused, and the cost is increased. In addition, the prefabricated composite floor slab is thinner in prefabricated part, so that the prefabricated composite floor slab is supported by a full-hall scaffold on site.
2) The traditional prefabricated column connecting node adopts a post pouring mode, the node area needs to enclose and support the formwork, and meanwhile, the formwork needs to be firmly and compactly fixed by adopting a split bolt or a fixture square timber, so that the on-site formwork support operation is difficult and the workload is high;
3) The secondary beam is cast in situ or prefabricated laminated beams in the conventional condition, the secondary beam is required to be subjected to working procedures such as formwork supporting, steel bar binding and pouring in situ, so that the effects are low, the data is wasted, the environment is polluted, a certain carbon emission is increased.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the assembled support-free and formwork-free full-prefabricated frame with reasonable structural design and high assembly degree and the construction method thereof.
The technical scheme of the invention is as follows:
an assembled full prefabricated frame without support, formwork support and outer frame comprises a prefabricated floor slab, a prefabricated main beam and prefabricated columns; the utility model discloses a prefabricated girder, including prefabricated girder, post-cast strip groove face, prefabricated floor, prefabricated secondary beam both ends are set up respectively on the prefabricated post, prefabricated floor upper surface and prefabricated girder lapped three sides set up the post-cast strip groove face respectively, prefabricated floor remaining one side and prefabricated secondary beam integrated into one piece, prefabricated secondary beam both ends are set up respectively on the prefabricated girder, just prefabricated girder top forms the pouring passageway of intercommunication each other.
Further, the precast column comprises a center column, side columns and corner columns, vertical reinforcing steel bars of the precast column are arranged at four corner positions of the precast column in a concentrated mode, cross pouring grooves are formed in the top of the center column, T-shaped pouring grooves are formed in the top of the side columns, L-shaped pouring grooves are formed in the top of the corner columns, and the L-shaped pouring grooves are used for pouring plugging of column joints respectively.
Further, the prefabricated floor lateral part is equipped with the connection reinforcement, be equipped with the vertical dowel of connection on the prefabricated girder in the position that corresponds with the connection reinforcement, the prefabricated floor passes through the connection reinforcement and is connected vertical dowel location.
Further, the prefabricated secondary beam is provided with end steel bars, the prefabricated main beam is provided with a plurality of vertical joint bar groups which are formed by connecting vertical joint bars at positions corresponding to the end steel bars, and the end steel bars are bent and arranged on the vertical joint bar groups.
Further, set up prefabricated side fascia respectively between side post and the corner post and between side post and the side post, the inboard of prefabricated side fascia sets up with the laminating of the prefabricated girder of corresponding position department, prefabricated post outside, and the top of prefabricated side fascia and prefabricated floor upper surface coincide layer parallel and level.
Further, the groove faces of the post-pouring belts of two adjacent precast floor slabs are symmetrically arranged to form a V-shaped pouring channel.
Further, the external steel bars of the precast floor slabs are equivalent and then extend to the position above the groove surface of the post-pouring strip of the adjacent precast floor slabs.
Further, two adjacent prefabricated secondary beams are combined to form a complete prefabricated secondary beam.
Furthermore, the side part of the prefabricated column is provided with a steel corbel for lap joint installation of the prefabricated girder and the prefabricated floor slab.
Furthermore, the prefabricated side fascia inboard is equipped with the tongue-and-groove, and prefabricated side fascia passes through tongue-and-groove and prefabricated girder gomphosis setting, just prefabricated side fascia inboard sets up embedded bolt with pouring passageway position department corresponding, can strengthen the connection stability of prefabricated side fascia after pouring.
A construction method of an assembled full prefabricated frame without support, formwork support and outer frame comprises the following steps:
1) And (3) constructing a prefabricated column:
hoisting the prefabricated column to a corresponding position of a building foundation, grouting the bottom and pouring the top;
2) And (3) constructing prefabricated external wall panels:
after the construction of the prefabricated column is completed, constructing prefabricated external wall panels between the side columns and the corner columns and between the side columns, connecting the prefabricated external wall panels with the prefabricated column and the lower foundation through pre-buried connecting pieces, and filling the prefabricated external wall panels at the connecting positions of the two adjacent surfaces with rubber PE rubber rods;
3) Prefabricating primary and secondary beams:
after the construction of the prefabricated external wall panel is completed, hoisting the prefabricated main beams between adjacent prefabricated columns, and supporting the prefabricated main beams by installing temporary steel corbels on the prefabricated columns; the prefabricated secondary beam is divided into two halves and integrally prefabricated with the prefabricated floor slab through a steel tire membrane, and the prefabricated secondary beam and the prefabricated floor slab are integrally installed and constructed together;
4) And (3) constructing a precast floor slab:
after the construction of the prefabricated girder is completed, hoisting the prefabricated floor slab into an area surrounded by the prefabricated girder, and installing steel corbels on the prefabricated girder to support the prefabricated floor slab;
5) And (3) integral pouring construction:
pouring concrete into the pouring channel to finish the construction of one layer of full prefabricated frame, and performing the construction of the next layer of full prefabricated frame according to the steps 1-4).
Further, the steel tire membrane in the step 3) comprises: a steel bed die bottom die, a floor slab side die, a secondary beam side die and a wedge-shaped support pad; the floor side forms are arranged in three directions of the upper surface of the steel tire film bottom die in a U-shaped mode, the secondary beam side forms are arranged in the other direction of the upper surface of the steel tire film bottom die to form a mirror image L-shaped structure, and the upper surface of the steel tire film bottom die is located on the inner side of the floor side forms and is provided with a wedge-shaped support pad in a fitting mode and used for forming a post-pouring belt groove surface.
Further, the precast floor slab and the secondary beam are integrally cast and formed through the steel tire mold, the precast floor slab is cast firstly in the casting process, the precast secondary beam is cast after the precast floor slab concrete is vibrated and tamped, and finally the template is removed.
The beneficial effects of the invention are as follows:
1) The full precast slab has large thickness and large rigidity, directly achieves the design of bending strength, can realize the support-free and support-free operation, and greatly improves the site civilized construction level and the construction efficiency.
2) The invention adopts prefabricated column with skin and externally hung wallboard as templates, which can realize the formwork support-free of the column; in addition, the column steel bar adopts four corner steel bar bundles, and is more efficient than the traditional single steel bar and single sleeve connection construction.
3) The external wall board is hung on the main beam, when the external wall board is installed, the lower external wall board is installed firstly, an inclined support is established, and then the upper main beam is installed, and the external wall board is used as a lateral template of the main beam overlapping layer.
4) The invention adopts the secondary beam upper reinforcing steel bars and the floor slab upper reinforcing steel bars to perform integral prefabrication in two halves and each adjacent floor slab, and the installation construction joint of 2cm is arranged in the middle, so that the integral prefabrication and installation of the secondary beam and the slab are realized, the wet operation is avoided, the efficiency is high, and the site concrete formwork pouring is avoided.
5) The prefabricated external wall panels, the prefabricated main beams, the prefabricated columns, the prefabricated floor slabs and the secondary beams adopted by the invention are all manufactured in a factory, and can be assembled on site without erecting an external frame, so that the construction without formwork erection, supporting and external frame is truly realized.
Drawings
FIG. 1 is a diagram of a precast main beam and precast column connection nodes of the present invention;
FIG. 2 is a graph of prefabricated exterior wall panels, prefabricated main beams and prefabricated column connection nodes of the present invention;
FIG. 3 is a graph of the joints between the prefabricated floor slab and the prefabricated girder according to the present invention;
FIG. 4 is a graph of the connection nodes of the precast secondary beams, precast floor slabs and precast main beams of the present invention;
FIG. 5 is a graph of prefabricated exterior wall panel connection nodes of the present invention;
FIG. 6 is a schematic view of a steel tire membrane structure of the present invention;
FIG. 7 is a schematic side view of a steel tire membrane according to the present invention;
in the figure: 1. prefabricating a column; 2. prefabricating a main girder; 3. casting a laminated layer in situ; 4. a bracket; 5. prefabricating an external wall panel; 7. a rubber PE rubber rod; 8. prefabricating a floor slab; 801. prefabricating a floor section; 802. prefabricating a secondary beam part of the floor slab; 9. connecting vertical dowel bars; 10. connecting the reinforcement; 11. post-cast strip; 12. a steel tire membrane bottom die; 13. a magnetic cassette; 14. diagonal bracing; 15. secondary beam side mold; 16. secondary beam side mold stiffening ribs; 17. stiffening rib connectors; 18 wedge shaped support pads.
Detailed Description
The invention is further described below with reference to the drawings.
As shown in fig. 1-7, an assembled support-free and formwork-free full-prefabricated frame comprises a prefabricated floor slab 8, a prefabricated main beam 2, a prefabricated column 1, a prefabricated external wall panel 5 and a post-cast strip 11;
the precast column is arranged at a corresponding position of the building foundation, and the precast column is vertically connected with the precast column.
The prefabricated girder both ends overlap joint respectively establish on the prefabricated post, and the corresponding position generally sets up the steel bracket and is used for the support to the prefabricated girder on the prefabricated post.
In the whole full prefabricated frame system, the prefabricated columns comprise middle columns, side columns and corner columns, and vertical reinforcing steel bars of the prefabricated columns are arranged at four corner positions of the prefabricated columns in a centralized manner; therefore, a cross pouring groove can be formed in the top of the middle column, a T-shaped pouring groove is formed in the top of the side column, an L-shaped pouring groove is formed in the top of the corner column, and the cross pouring groove and the L-shaped pouring groove are respectively used for pouring and plugging at the column node.
The arrangement of the pouring grooves on the prefabricated columns can realize the formwork-free pouring connection at the column nodes, the construction steps of formwork supporting are reduced, the time of engineering formwork supporting and formwork removing is saved, and the construction progress is further improved.
The upper surfaces of the precast floor slabs are respectively provided with post-cast strip groove surfaces in three directions which are erected with the precast main beams, the post-cast strip groove surfaces of the adjacent precast floor slabs are symmetrically arranged to form V-shaped pouring channels, and post-cast strips are formed after concrete is poured in the V-shaped pouring channels; the post-cast strip can obviously increase the width of the post-cast strip and improve the connection stability of the post-cast strip.
The external steel bars of two adjacent precast floor slabs can be extended to the upper parts of the groove surfaces of the post-cast strips of the precast floor slabs which are opposite to each other after being equivalent, so that the number of the external steel bars of the precast floor slabs can be greatly reduced on the premise of not affecting the structural stability, and the precast floor slabs are convenient to hoist and connect.
The invention divides the precast secondary beam into two halves, and the precast secondary beam is precast integrally with the precast floor slab of corresponding span, thus the installation step of the precast secondary beam is reduced.
The periphery of the precast floor slab (comprising two ends of the precast secondary beam) is respectively erected on the precast columns, casting channels which are mutually communicated are formed at the tops of the main beams, and a full precast frame system is formed after concrete is cast in the casting channels.
The prefabricated floor lateral part is equipped with the connection reinforcement, is equipped with the vertical dowel of connection in the position that corresponds with the connection reinforcement on the prefabricated girder, and the prefabricated floor passes through the connection reinforcement and is connected vertical dowel location, has guaranteed the installation accuracy of prefabricated floor to and the connection stability between prefabricated floor and the prefabricated girder.
The end reinforcing steel bars of the prefabricated secondary beams are provided with a plurality of vertical connecting dowel bar groups which are formed by connecting vertical dowel bars at positions corresponding to the end reinforcing steel bars on the prefabricated main beams, and the end reinforcing steel bars are bent and arranged on the vertical connecting dowel bar groups, so that the connection stability between the prefabricated secondary beams and the prefabricated main beams is ensured.
One side of the prefabricated external wall panel is provided with a tongue-and-groove, the whole structure is L-shaped, the prefabricated external wall panel is embedded with the prefabricated main beam through the tongue-and-groove, the prefabricated external wall panel is embedded with 140 mm, and 60mm of the outside is reserved, so that the indoor space occupied by the inner beam can be reduced. The embedded bolts are arranged at the positions corresponding to the pouring channels (post-pouring strips) on the inner sides of the prefabricated external wall panels, and the connection stability of the prefabricated external wall panels can be enhanced after pouring, as shown in fig. 5.
A construction method of an assembled support-free, formwork-free and outer frame-free full prefabricated frame comprises the following specific steps:
1) And (3) constructing a prefabricated column:
hoisting the prefabricated column to a corresponding position of a building foundation, grouting the bottom and pouring the top;
2) And (3) constructing prefabricated external wall panels:
after the construction of the prefabricated column is completed, constructing prefabricated external wall panels between the side columns and the corner columns and between the side columns (temporary inclined supports are arranged on the inner side supports of the prefabricated external wall panels), connecting the prefabricated external wall panels with the prefabricated column and a lower foundation through pre-buried connecting pieces, and filling the prefabricated external wall panels at the joints of the two adjacent surfaces with rubber PE glue bars;
3) Prefabricating primary and secondary beams:
after the construction of the prefabricated external wall panel is completed, hoisting the prefabricated main beams between adjacent prefabricated columns, and supporting the prefabricated main beams by installing temporary steel corbels on the prefabricated columns; the prefabricated secondary beam is divided into two halves and integrally prefabricated with the prefabricated floor slab through a steel tire membrane, and the prefabricated secondary beam and the prefabricated floor slab are integrally installed and constructed together;
the steel tire membrane in the step 3) comprises the following components: a steel bed die bottom die, a floor slab side die, a secondary beam side die and a wedge-shaped support pad; the floor slab side die is arranged in three directions on the upper surface of the steel bed die, the secondary beam side die is arranged in the other direction on the upper surface of the steel bed die to form a mirror image L-shaped structure, and the upper surface of the steel bed die is positioned on the inner side of the floor slab side die and is provided with a wedge-shaped support pad in a fitting manner for forming a groove surface of a post-pouring strip;
the prefabricated floor slab and the secondary beam are integrally cast and formed through a steel tire membrane, the prefabricated floor slab is cast firstly in the casting process, the prefabricated secondary beam is cast after the concrete of the prefabricated floor slab is vibrated and tamped, and finally the template is removed;
4) And (3) constructing a precast floor slab:
after the construction of the prefabricated girder is completed, hoisting the prefabricated floor slab into an area surrounded by the prefabricated girder, and installing steel corbels on the prefabricated girder to support the prefabricated floor slab;
5) And (3) integral pouring construction:
pouring concrete into the pouring channel to finish the construction of one layer of full prefabricated frame, and performing the construction of the next layer of full prefabricated frame according to the steps 1-4).
The above embodiments are only preferred embodiments of the present invention, and are not limiting to the technical solutions of the present invention, and any technical solution that can be implemented on the basis of the above embodiments without inventive effort should be considered as falling within the scope of protection of the patent claims of the present invention.

Claims (10)

1. The assembled full prefabricated frame without support, formwork support and outer frame is characterized by comprising prefabricated floor slabs, prefabricated secondary beams, prefabricated main beams, prefabricated columns and prefabricated outer wall boards; the prefabricated girder both ends are set up respectively on the precast column, prefabricated floor upper surface sets up the post-cast strip groove face respectively with the three sides of prefabricated girder overlap joint, and prefabricated floor remaining one side and prefabricated secondary beam integrated into one piece, prefabricated secondary beam both ends are set up respectively on the prefabricated girder, just prefabricated girder top forms the pouring passageway of intercommunication each other, on the external prefabricated girder of prefabricated side fascia, act as pouring passageway tip template.
2. The assembled full prefabricated frame free of supporting, formwork supporting and outer frames according to claim 1, wherein the prefabricated columns comprise center columns, side columns and corner columns, vertical reinforcing steel bars of the prefabricated columns are arranged at four corner positions of the prefabricated columns in a concentrated mode, cross pouring grooves are formed in the tops of the center columns, T-shaped pouring grooves are formed in the tops of the side columns, L-shaped pouring grooves are formed in the tops of the corner columns, and the L-shaped pouring grooves are used for pouring and plugging at column nodes respectively.
3. The assembled full prefabricated frame free of supporting, formwork supporting and outer frames, according to claim 1, wherein the side parts of the prefabricated floor slabs are provided with connecting reinforcements, the prefabricated main beams are provided with connecting vertical dowel bars at positions corresponding to the connecting reinforcements, and the prefabricated floor slabs are connected with the connecting vertical dowel bars in a positioning manner through the connecting reinforcements.
4. The assembled full prefabricated frame free of supporting, formwork supporting and outer frames according to claim 3, wherein end steel bars are arranged on the prefabricated secondary beams, a plurality of connecting vertical dowel bar groups formed by connecting vertical dowel bars are arranged on the prefabricated main beams at positions corresponding to the end steel bars, and the end steel bars are bent and arranged on the connecting vertical dowel bar groups.
5. The assembled full prefabricated frame without support, formwork support and outer frame as claimed in claim 2, wherein prefabricated external wall panels are respectively arranged between the side columns and the corner columns and between the side columns, the inner sides of the prefabricated external wall panels are attached to the outer sides of the prefabricated main beams and the prefabricated columns at corresponding positions, and the tops of the prefabricated external wall panels are flush with the upper surfaces of the prefabricated floor slabs.
6. The assembled full prefabricated frame free of supporting, formwork supporting and outer frames, according to claim 1, wherein the groove faces of the post-cast strips of two adjacent prefabricated floors are symmetrically arranged to form a V-shaped pouring channel.
7. The assembled full prefabricated framework free of support, formwork support and outer frame as claimed in claim 1, wherein the external steel bars of the prefabricated floor slab extend to the position above the groove surface of the post-pouring strip of the adjacent prefabricated floor slab after being equivalent.
8. A fabricated, support-free, formwork-free, outer frame-free fully prefabricated frame as claimed in claim 1 wherein two adjacent prefabricated secondary beams are combined to form a complete prefabricated secondary beam.
9. The assembled full prefabricated frame free of supporting, formwork supporting and outer frames, according to claim 1, wherein a tongue-and-groove is formed in the inner side of the prefabricated outer wall plate, the prefabricated outer wall plate is embedded with the bottom of the prefabricated main beam through the tongue-and-groove, and embedded bolts are arranged at positions corresponding to pouring channels on the inner side of the prefabricated outer wall plate.
10. The construction method of the assembled full prefabricated frame free of support, formwork supporting and outer frame is characterized by comprising the following steps of:
1) And (3) constructing a prefabricated column:
hoisting the prefabricated column to a corresponding position of a building foundation, grouting the bottom and pouring the top;
2) And (3) constructing prefabricated external wall panels:
after the construction of the prefabricated column is completed, constructing prefabricated external wall panels between the side columns and the corner columns and between the side columns, connecting the prefabricated external wall panels with the prefabricated column and the lower foundation through pre-buried connecting pieces, and filling the prefabricated external wall panels at the connecting positions of the two adjacent surfaces with rubber PE rubber rods;
3) Prefabricating primary and secondary beams:
after the construction of the prefabricated external wall panel is completed, hoisting the prefabricated main beams between adjacent prefabricated columns, and supporting the prefabricated main beams by installing temporary steel corbels on the prefabricated columns; the prefabricated secondary beam is divided into two halves and integrally prefabricated with the prefabricated floor slab through a steel tire membrane, and the prefabricated secondary beam and the prefabricated floor slab are integrally installed and constructed together;
the steel tire membrane comprises: a steel bed die bottom die, a floor slab side die, a secondary beam side die and a wedge-shaped support pad; the floor slab side die is arranged in three directions on the upper surface of the steel tire film bottom die in a U-shaped manner, the secondary beam side die is arranged on the other direction on the upper surface of the steel tire film bottom die to form a mirror image L-shaped structure, and the upper surface of the steel tire film bottom die is positioned on the inner side of the floor slab side die and is provided with a wedge-shaped support pad in a fitting manner for forming a post-pouring belt groove surface;
4) And (3) constructing a precast floor slab:
after the construction of the prefabricated girder is completed, hoisting the prefabricated floor slab into an area surrounded by the prefabricated girder, and installing steel corbels on the prefabricated girder to support the prefabricated floor slab;
5) And (3) integral pouring construction:
pouring concrete into the pouring channel to finish the construction of one layer of full prefabricated frame, and performing the construction of the next layer of full prefabricated frame according to the steps 1-4).
CN202310851355.0A 2023-07-12 2023-07-12 Assembled full prefabricated frame free of support, formwork supporting and outer frame and construction method thereof Pending CN117051965A (en)

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