CN116517190A - Construction method of prefabricated hollow column - Google Patents
Construction method of prefabricated hollow column Download PDFInfo
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- CN116517190A CN116517190A CN202310649412.7A CN202310649412A CN116517190A CN 116517190 A CN116517190 A CN 116517190A CN 202310649412 A CN202310649412 A CN 202310649412A CN 116517190 A CN116517190 A CN 116517190A
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- 238000010276 construction Methods 0.000 title claims abstract description 39
- 239000004567 concrete Substances 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 87
- 239000010959 steel Substances 0.000 claims description 87
- 238000003466 welding Methods 0.000 claims description 25
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 17
- 210000001503 joint Anatomy 0.000 claims description 17
- 238000011065 in-situ storage Methods 0.000 claims description 9
- 238000004873 anchoring Methods 0.000 claims description 7
- 239000011376 self-consolidating concrete Substances 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011178 precast concrete Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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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
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
-
- 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
- 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
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
-
- 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
- E04G21/14—Conveying or assembling building elements
-
- 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
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
-
- 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
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
- E04G21/1841—Means for positioning building parts or elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/025—Structures with concrete columns
Abstract
The invention discloses a construction method of a prefabricated hollow column, which comprises the following steps: preparing a cup foundation, a first layer RC prefabricated hollow column, a middle layer RC prefabricated hollow column, a top layer RC prefabricated hollow column, a prefabricated horizontal superposed beam and a prefabricated laminated slab; the method and the device can meet the stress requirements of the prefabricated assembled concrete frame structure on the frame column bearing horizontal load and bending moment when adopting the RC prefabricated hollow column as the frame column to lighten the self weight of the structure.
Description
Technical Field
The invention relates to the technical field of prefabricated building construction, in particular to a construction method of a prefabricated hollow column.
Background
The assembled building in China has been developed for seventy years, from initial manual operation to mechanized production, from reference to advanced technology abroad to autonomous innovation, and the period of the assembled building is subjected to climax and has undershoot.
With the development of economy and science, the advantages of the cast-in-situ building mode gradually disappear, and the assembled building becomes the key development direction of the building industry in China in the future. Meanwhile, the country among the past five years has continuously emerged a lot of critical policies and has started to vigorously develop the fabricated building. The RC (ReinforceConcrete) column is used as one of the fabricated buildings and an important vertical supporting member thereof, the RC beam is used as a main bending member in the fabricated building, and the deep research on beam column nodes has a decisive influence on pushing the application and development of the fabricated building.
According to the stress characteristics of the frame column, the prefabricated frame column adopts a precast concrete solid column, and rarely adopts a prefabricated hollow column. In the foundation design, precast concrete pipe piles are commonly used, and the main bearing pressure characteristics of the precast concrete pipe piles are fully considered in the aspects of material selection and reinforcement structure. The stress characteristics of the frame column are slightly different from those of the pile body, and besides the pile body is stressed, the column body also bears the action of bending moment caused by horizontal load transmission, so that the structure and connection are slightly different from those of the hollow pile.
In order to fundamentally improve the performance of the fabricated building, the method comprises the following steps: the production, transportation and construction convenience, the anti-seismic safety and reliability of the structure, the toughness and the restorability after strong earthquake, namely the safety and sustainability (sustainability) of the structure have the characteristics of simplicity. The inventors have developed an assembled building "3S" technology system, including an assembled frame structure system and an assembled shear wall structure system. The meaning of "3S" is: simple: the intelligent robot welding device comprises simple production, convenient transportation and convenient construction, the traditional production mode can be used for production, a full-automatic intelligent production line (Smart) can be used for production, and the intelligent energization can be realized by using robot welding (Smart) for field installation. Safe: the meaning is that the structure has definite and reliable force transmission path, clear earthquake-proof mechanism and excellent earthquake-proof performance, and the waterproof, heat-insulating and heat-insulating performances are easy to realize. Sustainable: the anti-seismic toughness is good, the function recovery after strong shock is facilitated, the durability is good, the green building materials are used as much as possible, and sustainable low-carbon green development is realized. The construction method of the prefabricated hollow column in the 3S technology system of the prefabricated building is to be developed.
Disclosure of Invention
In view of the above, the present invention provides a construction method of prefabricated hollow columns, which aims to solve the above technical problems.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a construction method of a prefabricated hollow column comprises the following steps:
s1, preparing a cup foundation, a first layer RC prefabricated hollow column, a middle layer RC prefabricated hollow column, a top layer RC prefabricated hollow column, a prefabricated horizontal superposed beam and a prefabricated superposed plate;
s2, lifting and inserting the first-layer RC prefabricated hollow column into a cup foundation, and positioning, correcting and fixing the first-layer RC prefabricated hollow column 2;
s3, hoisting the prefabricated horizontal superposed beam, adding additional anchor bars in the connecting joint area of the RC prefabricated hollow column at the first layer and the prefabricated horizontal superposed beam, hoisting the prefabricated superposed slab, and paving distributed reinforcing bars at the upper part of the prefabricated superposed slab; supporting a formwork, and pouring the hollow cavity of the RC prefabricated hollow column of the first layer, the prefabricated horizontal superposed beam and the concrete at the upper part of the prefabricated superposed slab;
s4, hoisting an intermediate layer RC prefabricated hollow column, positioning and correcting the intermediate layer RC prefabricated hollow column, temporarily anchoring the first layer RC prefabricated hollow column and the intermediate layer RC prefabricated hollow column through a welding positioning device, constructing a butt welding seam of a groove between the first layer RC prefabricated hollow column and a steel hoop plate of the intermediate layer RC prefabricated hollow column, repeating the step S3, completing the construction of the intermediate layer RC prefabricated hollow column, a prefabricated horizontal superposed beam and a prefabricated superposed slab, and cutting off the temporarily anchored welding positioning device;
s5, sequentially repeating the step S3 and the step S4 to construct other middle layer main body frames;
s6, welding anchor plates at the ends of column longitudinal reinforcing steel bars of the top RC prefabricated hollow column, and completing construction of the top RC prefabricated hollow column, the prefabricated horizontal superposed beam and the prefabricated superposed slab in a mode of S4;
s7, finishing the construction of the main body frame structure.
Preferably, in the construction method of the prefabricated hollow column, the top surface of the cup opening foundation forms a funnel-shaped hole with a large top and a small bottom.
Preferably, in the construction method of the prefabricated hollow column, the first layer RC prefabricated hollow column includes a column longitudinal reinforcing bar, an additional anchor bar and a cavity; additional anchor bars are respectively arranged on two sides of a cavity at the upper end of the first-layer RC prefabricated hollow column, a part of reinforcing steel bars extend out of the upper end of the first-layer RC prefabricated hollow column to serve as reserved reinforcing steel bars, and steel joints are arranged at the end parts of the reserved reinforcing steel bars.
Preferably, in the construction method of the prefabricated hollow column, additional anchor bars are arranged at the upper end and the lower end of the middle layer RC prefabricated hollow column, a part of reinforcing bars extend out of the upper end and the lower end of the middle layer RC prefabricated hollow column to serve as reserved reinforcing bars, and steel joints are arranged at the ends of the reserved reinforcing bars.
Preferably, in the construction method of the prefabricated hollow column, an additional anchor bar is provided at the lower end of the top-layer RC-prefabricated hollow column, a part of the column longitudinal steel bar and the additional anchor bar extend out of the lower end of the top-layer RC-prefabricated hollow column as reserved steel bars, a steel joint is provided at the end of the reserved steel bars, a part of the column longitudinal steel bar at the upper end of the top-layer RC-prefabricated hollow column extends out of the column longitudinal steel bar as reserved steel bars, and an anchor plate is welded at the end.
Preferably, in the construction method of the prefabricated hollow column, the steel joint comprises steel hoop plates, steel bar anchor nuts, bolts and holes, the 4 steel hoop plates are welded to form a rectangular cylinder, the steel bar anchor plates are welded inside the cylinder, the holes are formed in the center of the steel bar anchor plates, the bolts are welded on the inner wall of the cylinder, reserved steel bars penetrate through the steel bar anchor plates and are fixed at the end parts of the reserved steel bars through the steel bar anchor nuts, and gaskets are arranged between the steel bar anchor nuts and the steel bar anchor plates.
Preferably, in the construction method of the prefabricated hollow column, the welding positioning device comprises a butt joint lug plate, a butt joint clamping plate and a temporary bolt; the butt joint otic placode is fixed on the steel hoop board, and two butt joint splint centre gripping are in two butt joint otic placodes outsides that correspond from top to bottom, and interim bolt fastening butt joint otic placode and butt joint splint.
Preferably, in the above construction method of a prefabricated hollow column, the prefabricated horizontal superposed beam has a beam longitudinal reinforcing bar and a beam stirrup; the prefabricated laminated slab comprises upper chord steel bars and web member steel bars.
Preferably, in the construction method of the prefabricated hollow column, a gap between the outer surface of the first layer RC prefabricated hollow column and the cup foundation is filled with self-compacting concrete or recycled concrete; the concrete filled in the cavities of the first RC prefabricated hollow column, the middle RC prefabricated hollow column and the top RC prefabricated hollow column is self-compacting concrete or recycled concrete; and casting ultra-high-strength high-ductility concrete or high-performance recycled concrete in the connection node areas of the first-layer RC prefabricated hollow column, the middle-layer RC prefabricated hollow column and the top-layer RC prefabricated hollow column and the prefabricated horizontal superposed beam respectively.
Preferably, in the construction method of the prefabricated hollow column, the prefabricated horizontal superposed beam and the prefabricated superposed slab are a combination of cast-in-situ beams and plates or a combination of the prefabricated beams and the cast-in-situ plates.
Compared with the prior art, the construction method for the prefabricated hollow column is provided, the prefabricated hollow column is convenient to produce, transport and construct, gaps between the first-layer prefabricated hollow column and a cup foundation and cavities of prefabricated assembly of each layer are filled with self-compacting concrete or recycled concrete, sustainable low-carbon green development is achieved, the prefabricated hollow column steel hoop plates of each layer are connected through manual or robot welding, the upper and lower solid prefabricated hollow column longitudinal ribs of the core area are effectively connected, connection of the column longitudinal ribs is staggered in the beam column core area, gradual connection of the column longitudinal ribs in the beam column core area with narrow construction space is avoided, through arrangement of the column longitudinal ribs in the beam column core area can be guaranteed, integral grouting is achieved in a concrete cast-in-place mode for the upper connecting steel hoop plates and the lower connecting steel hoop plates, construction is convenient and efficient, connection quality is reliable, a force transmission path of the prefabricated hollow column structure is achieved, anti-seismic performance is good, and high-seismic performance is achieved through the pile-up-down, the high-level concrete filled high-toughness concrete filled in the prefabricated hollow column core area, and high-toughness is well-balanced, and high-toughness performance is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic side view of a three-layer prefabricated frame structure according to the present invention;
FIG. 2 is a schematic front view of a three-layer prefabricated frame structure according to the present invention;
FIG. 3 is a schematic view of a three-dimensional structure of a connecting node of a prefabricated hollow column and a prefabricated horizontal superposed beam, which is provided by the invention;
FIG. 4 is a schematic diagram of a three-dimensional structure of a first layer RC prefabricated hollow column provided by the invention;
FIG. 5 is a schematic diagram of a three-dimensional structure of an intermediate layer RC prefabricated hollow column provided by the invention;
FIG. 6 is a schematic diagram of a three-dimensional structure of a top RC prefabricated hollow column provided by the present invention;
FIG. 7 is a schematic view of a three-dimensional structure of a cup rim foundation provided by the invention;
FIG. 8 is a schematic view of a three-dimensional structure of a prefabricated horizontal composite beam provided by the invention;
FIG. 9 is a schematic view of a three-dimensional structure of a prefabricated laminated slab according to the present invention;
fig. 10 is a schematic three-dimensional structure of the welding positioning device provided by the invention.
Wherein:
1-a cup mouth foundation; 101-concrete cushion; 102-independent basis; 103-a funnel-shaped opening; 2-a first layer RC prefabricated hollow column; 3-prefabricating a hollow column by using an intermediate layer RC; 4-top RC prefabricated hollow column; 5-column longitudinal rebar; 6-attaching anchor bars; 7-a cavity; 8-prefabricating a horizontal superposed beam; 801-beam longitudinal rebar; 802-beam stirrups; 9-prefabricating the laminated slab; 901-winding steel bars; 902-web member reinforcement; 10-additional diagonal bracing; 11-steel hoop plates; 12-a steel bar anchor plate; 13-a steel bar anchoring nut; 14-pegs; 15-holes; 16-welding positioning device; 1601-dock ear; 1602-butt splints; 1603—temporary bolts; 17-anchor plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 10, the embodiment of the invention discloses a construction method of a prefabricated hollow column, which comprises the following steps:
s1, preparing a cup foundation 1, a first layer RC prefabricated hollow column 2, a middle layer RC prefabricated hollow column 3, a top layer RC prefabricated hollow column 4, a prefabricated horizontal superposed beam 8 and a prefabricated superposed plate 9;
s2, hoisting and inserting the first-layer RC prefabricated hollow column 2 into the cup foundation 1, positioning and correcting the first-layer RC prefabricated hollow column 2, and filling a gap between the outer surface of the first-layer RC prefabricated hollow column 2 and the cup foundation 1 by using fine aggregate concrete;
s3, building a scaffold, hoisting a prefabricated horizontal superposed beam 8, adding an additional anchor bar 6 in a joint area of the first-layer RC prefabricated hollow column 2 and the prefabricated horizontal superposed beam 8, welding on a diagonal line where the column longitudinal steel bars 5 and the beam longitudinal steel bars 801 overlap in a welding mode, adding an additional diagonal bracing 10, hoisting the prefabricated superposed slab 9, embedding pipelines, paving distributed steel bars at the upper part of the prefabricated superposed slab 9, supporting a formwork, casting the cavity 7 of the first-layer RC prefabricated hollow column 2, the prefabricated horizontal superposed beam 8 and the concrete at the upper part of the prefabricated superposed slab 9, and curing the concrete;
s4, hoisting the middle layer RC prefabricated hollow column 3, positioning and correcting the middle layer RC prefabricated hollow column 3, temporarily anchoring the first layer RC prefabricated hollow column 2 and the middle layer RC prefabricated hollow column 3 through a welding positioning device 16, constructing a groove butt welding seam between the first layer RC prefabricated hollow column 2 and the middle layer RC prefabricated hollow column 3 steel hoop plate 11, repeating the step S3, completing the construction of the middle layer RC prefabricated hollow column 3, the prefabricated horizontal superposed beam 8 and the prefabricated superposed plate 9, and cutting off the welding positioning device 16 for temporary anchoring;
s5, sequentially repeating the step S3 and the step S4, and constructing other middle layer main body frames;
s6, hoisting the top RC prefabricated hollow column 4, positioning and correcting the top RC prefabricated hollow column 4, temporarily anchoring the middle RC prefabricated hollow column 3 and the top RC prefabricated hollow column 4 through a welding positioning device 16, constructing a groove butt joint weld joint between the middle RC prefabricated hollow column 3 and a steel hoop plate 11 of the top RC prefabricated hollow column 4, welding an anchor plate 17 at the end part of a column longitudinal steel bar 5 of the top RC prefabricated hollow column 4, repeating the step S3, completing the construction of the top RC prefabricated hollow column 4, a prefabricated horizontal superposed beam 8 and a prefabricated superposed slab 9, and cutting off the temporarily anchored welding positioning device 16;
s7, finishing the construction of the main body frame structure.
Referring to fig. 7, the cup opening foundation 1 comprises a concrete cushion layer 101, an independent foundation 102 and a funnel-shaped opening 103, wherein the independent foundation 102 is poured on the upper portion of the concrete cushion layer 101, the center of the independent foundation 102 is provided with a funnel-shaped opening with a big top and a small bottom, and the square side length of the bottom surface of the opening is at least 2cm larger than the side length of the first layer RC prefabricated hollow column 2.
Referring to fig. 4, the first layer RC prefabricated hollow column 2 includes a column longitudinal steel bar 5, additional anchor bars 6 and a cavity 7, wherein the two sides of the cavity 7 at the upper end of the first layer RC prefabricated hollow column 2 are respectively provided with the additional anchor bars 6, a part of steel bars extend out of the upper end of the first layer RC prefabricated hollow column 2 as reserved steel bars, a steel joint is arranged at the end of the reserved steel bars, the steel joint includes a steel hoop plate 11, a steel bar anchor plate 12, a steel bar anchor nut 13, a bolt 14 and holes 15,4 steel hoop plates are welded to form a rectangular cylinder, the steel bar anchor plate 12 is welded in the cylinder, a hole 15 with a diameter of about 20cm is formed in the center of the steel bar anchor plate 12, a plurality of bolts 14 are welded on the inner wall of the cylinder, the reserved steel bars penetrate through the steel bar anchor plate 12 and are fixed at the end of the reserved steel bars through the steel bar anchor nut 13, and gaskets are arranged between the steel bar anchor nut 13 and the steel bar anchor plate 12.
Referring to fig. 5, the middle layer RC prefabricated hollow column 3 is provided with additional anchor bars 6 at both upper and lower ends thereof, and at the same time, the column longitudinal steel bars 5 and the additional anchor bars 6 extend out of a part of steel bars at both upper and lower ends of the middle layer RC prefabricated hollow column 3 as reserved steel bars, and a steel joint is provided at the end of the reserved steel bars.
Referring to fig. 6, the top-layer RC-prefabricated hollow column 4 is provided at its lower end with additional anchor bars 6, while the column longitudinal bars 5 and the additional anchor bars 6 extend out of a portion of the bars at the lower end of the top-layer RC-prefabricated hollow column 4 as reserved bars, a steel joint is provided at the end of the reserved bars, a portion of the column longitudinal bars 5 at the upper end of the top-layer RC-prefabricated hollow column 4 extend out of the bars as reserved bars, and anchor plates 17 are welded at the ends.
Referring to fig. 8 to 9, the prefabricated horizontal composite beam 8 includes beam longitudinal steel bars 801 and beam stirrups 802; the prefabricated laminated slab 9 includes upper chord reinforcement 901 and web reinforcement 902.
Referring to fig. 10, the weld positioning device 16 includes a docking ear 1601, a docking clamp 1602, and a temporary bolt 1603; the butt-joint ear plate 1601 is fixed to the hoop plate 11, and two butt-joint clamp plates 1602 clamp the outside of the two butt-joint ear plates 1601 corresponding up and down, and temporary bolts 1603 fasten the butt-joint ear plate 1601 and the butt-joint clamp plates 1602.
In order to further optimize the technical scheme, the gap between the outer surface of the first-layer RC prefabricated hollow column 2 and the cup rim foundation 1 can be filled with self-compacting concrete or recycled concrete; the concrete filled in the cavities 7 of the first layer RC prefabricated hollow column 2, the middle layer RC prefabricated hollow column 3 and the top layer RC prefabricated hollow column 4 can be filled with self-compacting concrete or recycled concrete.
In this embodiment, the prefabricated horizontal laminated beam 8 and the prefabricated laminated slab 9 may be replaced by various schemes such as a combination of cast-in-situ beams and plates or a combination of the prefabricated beams and the cast-in-situ plates.
In order to further optimize the technical scheme, the connection node areas of the first layer RC prefabricated hollow column 2, the middle layer RC prefabricated hollow column 3 and the top layer RC prefabricated hollow column 4 and the prefabricated horizontal superposed beam 8 are respectively poured with ultra-high-strength high-ductility concrete or high-performance recycled concrete.
In order to further optimize the technical scheme, the steel hoop plates at the column ends of the first-layer RC prefabricated hollow column 2, the middle-layer RC prefabricated hollow column 3 and the top-layer RC prefabricated hollow column 4 are welded and fixed in a manual or robot welding mode.
In the embodiment, RC prefabricated hollow columns are adopted as frame columns of the prefabricated concrete structure, so that the concrete consumption can be greatly saved, the dead weight of the structure is lightened, and rapid assembly can be realized by welding steel hoop plates among the RC prefabricated hollow columns of each layer; and concrete is poured in the column cavity, the beam column node area, the beam and plate cast-in-situ area by adopting a cast-in-situ mode, so that the connection among the prefabricated horizontal superposed beam, the prefabricated composite slab and the RC prefabricated hollow column is realized. Therefore, the RC prefabricated hollow column is adopted as the frame column to lighten the dead weight of the structure, and simultaneously, the stress requirement of the prefabricated assembled concrete frame structure on the horizontal load and bending moment borne by the frame column is met, and the RC prefabricated hollow column has the advantages of saving the consumption of concrete and saving the construction cost of a foundation.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The construction method of the prefabricated hollow column is characterized by comprising the following steps of:
s1, preparing a cup foundation (1), a first layer RC prefabricated hollow column (2), a middle layer RC prefabricated hollow column (3), a top layer RC prefabricated hollow column (4), a prefabricated horizontal superposed beam (8) and a prefabricated superposed plate (9);
s2, hoisting and inserting the first-layer RC prefabricated hollow column (2) into the cup rim foundation (1), and positioning, correcting and fixing the first-layer RC prefabricated hollow column (2);
s3, hoisting a prefabricated horizontal superposed beam (8), adding additional anchor bars (6) in a connecting node area of the first-layer RC prefabricated hollow column (2) and the prefabricated horizontal superposed beam (8), hoisting a prefabricated superposed slab (9), and paving distributed reinforcing steel bars at the upper part of the prefabricated superposed slab (9); supporting a mould, and pouring concrete at the upper parts of a cavity (7), a prefabricated horizontal superposed beam (8) and a prefabricated superposed slab (9) of the first RC prefabricated hollow column (2);
s4, hoisting the middle layer RC prefabricated hollow column (3), positioning and correcting the middle layer RC prefabricated hollow column (3), temporarily anchoring the first layer RC prefabricated hollow column (2) and the middle layer RC prefabricated hollow column (3) through a welding positioning device (16), constructing a groove butt welding seam between the first layer RC prefabricated hollow column (2) and a steel hoop plate (11) of the middle layer RC prefabricated hollow column (3), repeating the step S3, completing construction of the middle layer RC prefabricated hollow column (3), a prefabricated horizontal superposed beam (8) and a prefabricated superposed plate (9), and cutting off the welding positioning device (16) for temporary anchoring;
s5, sequentially repeating the step S3 and the step S4 to construct other middle layer main body frames;
s6, welding anchor plates (17) at the ends of column longitudinal steel bars (5) of the top-layer RC prefabricated hollow column (4), and completing construction of the top-layer RC prefabricated hollow column (4), the prefabricated horizontal superposed beam (8) and the prefabricated superposed slab (9) in a mode of the step S4;
s7, finishing the construction of the main body frame structure.
2. The construction method of the prefabricated hollow column according to claim 1, wherein the top surface of the cup opening foundation (1) is provided with a funnel-shaped hole (103) with a large top and a small bottom.
3. The construction method of the prefabricated hollow column according to claim 1, wherein the first layer RC prefabricated hollow column (2) comprises column longitudinal steel bars (5), additional anchor bars (6) and a cavity (7); additional anchor bars (6) are respectively arranged on two sides of a cavity (7) at the upper end of the first-layer RC prefabricated hollow column (2), a part of reinforcing steel bars extend out of the upper end of the first-layer RC prefabricated hollow column (2) as reserved reinforcing steel bars, and steel joints are arranged at the ends of the reserved reinforcing steel bars.
4. The construction method of the prefabricated hollow column according to claim 1, wherein additional anchor bars (6) are arranged at the upper end and the lower end of the middle layer RC prefabricated hollow column (3), a part of reinforcing steel bars extend out of the upper end and the lower end of the middle layer RC prefabricated hollow column (3) to serve as reserved reinforcing steel bars, and steel joints are arranged at the ends of the reserved reinforcing steel bars.
5. The construction method of the prefabricated hollow column according to claim 1, characterized in that an additional anchor bar (6) is arranged at the lower end of the top-layer RC prefabricated hollow column (4), a part of reinforcing steel bars extend out of the lower end of the top-layer RC prefabricated hollow column to serve as reserved reinforcing steel bars, a steel joint is arranged at the end of the reserved reinforcing steel bars, a part of reinforcing steel bars extend out of the column longitudinal reinforcing steel bars (5) at the upper end of the top-layer RC prefabricated hollow column (4) to serve as reserved reinforcing steel bars, and anchor plates (17) are welded at the end portions.
6. The construction method of the prefabricated hollow column according to any one of claims 3 to 5, wherein the steel joint comprises a steel hoop plate (11), a steel bar anchor plate (12), steel bar anchor nuts (13), bolts (14) and holes (15), 4 steel hoop plates (11) are welded to form a rectangular cylinder, the steel bar anchor plate (12) is welded inside the cylinder, the holes (15) are formed in the center of the steel bar anchor plate (12), a plurality of bolts (14) are welded on the inner wall of the cylinder, reserved steel bars penetrate through the steel bar anchor plate (12) and are fixed at the end parts of the reserved steel bars through the steel bar anchor nuts (13), and gaskets are arranged between the steel bar anchor nuts (13) and the steel bar anchor plate (12).
7. The method of constructing a prefabricated hollow column according to claim 6, wherein the welding positioning device (16) comprises a butt ear plate (1601), a butt clamp plate (1602) and a temporary bolt (1603); the butt joint lug plates (1601) are fixed on the steel hoop plates (11), two butt joint clamping plates (1602) are clamped on the outer sides of the two butt joint lug plates (1601) which correspond to each other up and down, and temporary bolts (1603) fasten the butt joint lug plates (1601) and the butt joint clamping plates (1602).
8. A method of constructing a prefabricated hollow column according to claim 1, characterized in that the prefabricated horizontal superimposed beam (8) has beam longitudinal bars (801) and beam stirrups (802); the prefabricated laminated slab (9) comprises an upper chord steel bar (901) and a web member steel bar (902).
9. The construction method of the prefabricated hollow column according to claim 6, wherein the gap between the outer surface of the first layer RC prefabricated hollow column (2) and the cup foundation is filled with self-compacting concrete or recycled concrete; the concrete filled in the cavities (7) of the first RC prefabricated hollow column (2), the middle RC prefabricated hollow column (3) and the top RC prefabricated hollow column (4) is self-compacting concrete or recycled concrete; and the connection node areas of the first layer RC prefabricated hollow column (2), the middle layer RC prefabricated hollow column (3) and the top layer RC prefabricated hollow column (4) and the prefabricated horizontal superposed beam (8) are respectively poured with ultra-high-strength high-ductility concrete or high-performance recycled concrete.
10. The method for constructing the prefabricated hollow column according to claim 6, wherein the prefabricated horizontal superposed beams (8) and the prefabricated superposed plates (9) are combinations of cast-in-situ beams and plates or combinations of the prefabricated beams and the cast-in-situ plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310649412.7A CN116517190A (en) | 2023-06-02 | 2023-06-02 | Construction method of prefabricated hollow column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310649412.7A CN116517190A (en) | 2023-06-02 | 2023-06-02 | Construction method of prefabricated hollow column |
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| Publication Number | Publication Date |
|---|---|
| CN116517190A true CN116517190A (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310649412.7A Pending CN116517190A (en) | 2023-06-02 | 2023-06-02 | Construction method of prefabricated hollow column |
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| Country | Link |
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| CN (1) | CN116517190A (en) |
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- 2023-06-02 CN CN202310649412.7A patent/CN116517190A/en active Pending
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