CN111749366B - Assembled composite wall based on steel pipes and construction method thereof - Google Patents

Assembled composite wall based on steel pipes and construction method thereof Download PDF

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Publication number
CN111749366B
CN111749366B CN202010760795.1A CN202010760795A CN111749366B CN 111749366 B CN111749366 B CN 111749366B CN 202010760795 A CN202010760795 A CN 202010760795A CN 111749366 B CN111749366 B CN 111749366B
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China
Prior art keywords
rib
wall
steel pipe
foundation
composite wall
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CN202010760795.1A
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CN111749366A (en
Inventor
黄炜
刘刚
张晨龙
张家瑞
范珍辉
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Xian University of Architecture and Technology
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Xian University of Architecture and Technology
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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
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • 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
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E04B1/4114—Elements with sockets
    • 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
    • E04B1/6806—Waterstops
    • 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
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • 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
    • E04B1/94—Protection against other undesired influences or dangers against fire
    • E04B1/941—Building elements specially adapted therefor
    • E04B1/942—Building elements specially adapted therefor slab-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • E04B2/562—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with fillings between the load-bearing elongated members
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • E04B2/58—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • E04B2/58—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal
    • E04B2/60—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal characterised by special cross-section of the elongated members
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • E04B2/64—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete
    • E04B2/68—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete made by filling-up wall cavities
    • 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
    • E04G21/142—Means in or on the elements for connecting same to handling apparatus
    • E04G21/147—Means in or on the elements for connecting same to handling apparatus specific for prefabricated masonry wall elements

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Load-Bearing And Curtain Walls (AREA)

Abstract

The invention discloses an assembled composite wall based on steel pipes and a construction method thereof, wherein the assembled composite wall comprises prefabricated wallboards which are arranged on foundation beams; the prefabricated wallboard comprises a steel pipe composite wall skeleton, building blocks and a concrete outer cladding, wherein the steel pipe composite wall skeleton adopts a rib grid structure formed by splicing a plurality of steel pipes, and the rib grid structure is filled with the building blocks; the wall connecting pieces are uniformly arranged at the bottom ends of the prefabricated wallboards, and the wall connecting pieces are arranged at the joints of rib columns and rib beams of the prefabricated wallboards; the foundation embedded part is embedded at the top end of the foundation beam, and the wall connecting part is connected with the foundation embedded part by adopting a high-strength bolt; according to the invention, through the synergistic effect of the steel pipe composite wall skeleton and the concrete, the advantages of better tensile and compressive properties of the steel pipe and strong compressive resistance of the concrete are fully utilized, and the bearing capacity and the earthquake resistance of the assembled composite wall are effectively improved; the wall connecting piece and the foundation embedded piece are connected through the high-strength bolt, so that dry connection of the horizontal seam of the foundation of the prefabricated wallboard is realized, and the stability is high.

Description

Assembled composite wall based on steel pipes and construction method thereof
Technical Field
The invention belongs to the technical field of civil engineering, and particularly relates to an assembled composite wall based on steel pipes and a construction method thereof.
Background
The assembled building is a building type for factory production and construction site installation, and has the advantages of precise component manufacturing quality, large-scale production, high resource utilization rate, small environmental pollution, high installation speed, low engineering cost, high engineering quality and the like; the rib grid of the traditional multi-ribbed composite wall is made of reinforced concrete, and the cross section of the reinforced concrete rib grid is small in size, so that the vertical and horizontal bearing capacities of the traditional multi-ribbed composite wall are low, and the traditional multi-ribbed composite wall cannot be used in high-rise buildings.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides an assembled composite wall based on steel pipes and a construction method thereof, so as to solve the technical problems that the vertical and horizontal bearing capacities of the existing multi-ribbed composite wall are low, and the connection design of key nodes of the composite wall is not clear.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The invention provides an assembled composite wall based on steel pipes, which comprises prefabricated wall boards, wall body connecting pieces and foundation embedded parts, wherein the prefabricated wall boards are arranged on foundation beams; the prefabricated wallboard comprises a steel pipe composite wall skeleton, building blocks and a concrete outer cladding, wherein the steel pipe composite wall skeleton adopts a rib grid structure formed by splicing a plurality of steel pipes, the rib grid structure is filled with the building blocks, and the concrete outer cladding is wrapped on the outer side of the rib grid structure;
The wall connecting pieces are uniformly arranged at the bottom ends of the prefabricated wall boards and are arranged at the joints of rib columns and rib beams of the prefabricated wall boards; the foundation embedded part is embedded at the top end of the foundation beam, and the wall connecting part is connected with the foundation embedded part by adopting a high-strength bolt.
Further, the wall connecting piece comprises a rectangular frame and two connecting plates; the rectangular frame is formed by surrounding four rectangular plates, and an upper top plate of the rectangular frame is fixedly connected with the bottom ends of rib columns of the prefabricated wall plates; the lower bottom plate of the rectangular frame is flush with the bottom end of the prefabricated wallboard; the side plates of the rectangular frame are fixedly connected with rib beams of the prefabricated wallboard; the two connecting plates are vertically arranged at two ends of the rectangular frame in parallel; a plurality of bolt through holes are uniformly formed in the wall connecting piece, and the high-strength bolts are fixedly connected with the foundation embedded piece after penetrating through the bolt through holes.
Further, the rectangular frame is filled with self-compacting concrete.
Further, the foundation embedded part comprises two wall splice plates, an embedded part plate and a plurality of anchoring steel bars; the two wall splice plates are vertically arranged in parallel, the wall connecting piece is clamped between the two wall splice plates, and the wall connecting piece is fixedly connected with the wall splice plates by high-strength bolts; the embedded part plate is horizontally arranged at the top end of the foundation beam, and the lower end of the wall splice plate is fixedly connected with the upper surface of the embedded part plate; the vertical evenly setting of a plurality of anchor reinforcing bars is in the below of burying the piece board, and anchor reinforcing bar's upper end and the lower surface fixed connection of burying the piece board, and the lower extreme buries in the foundation beam.
Further, the steel pipe composite wall skeleton comprises two side rib columns, a plurality of middle rib columns, an upper side rib beam, a lower side rib beam and a plurality of middle rib beams;
The two side rib columns are vertically arranged in parallel, and a plurality of middle rib columns are vertically arranged between the two side rib columns at intervals; the upper rib beams are horizontally and fixedly arranged at the top ends of the side rib columns and the middle rib columns, the lower rib beams are horizontally and fixedly arranged between two adjacent wall connecting pieces, and the middle rib beams are horizontally and alternately arranged between the upper rib beams and the lower rib beams;
The wall connecting piece is arranged at the joint of the side rib column or the middle rib column and the lower side rib beam, the upper end of the wall connecting piece is fixedly connected with the bottom end of the side rib column or the middle rib column, and the side wall of the wall connecting piece is fixedly connected with the lower side rib beam; the side rib column, the middle rib column, the upper rib beam, the lower rib beam and the middle rib beam are all round steel pipes or rectangular steel pipes, and rib column end plates are arranged at the top ends of the side rib column and the middle rib column.
Further, the wall thickness of the side rib column and the middle rib column is not smaller than the wall thickness of the upper side rib beam, the lower side rib beam and the middle rib beam; the outer diameters of the side rib columns and the middle rib columns are not smaller than the outer diameters of the upper side rib beam, the lower side rib beam and the middle rib beam.
Further, the side rib columns and the middle rib columns are arranged in a through length mode; the upper rib beam, the lower rib beam, the middle rib beam and the middle rib column are arranged in a disconnected mode at the junction of the upper rib beam, the lower rib beam and the middle rib column.
Further, the web plate of the rectangular steel pipe is parallel to the surface of the prefabricated wallboard, and circular or oval through holes are uniformly formed in the web plate of the rectangular steel pipe.
Further, the building blocks are aerated concrete building blocks; a mortar layer is arranged between the prefabricated wallboard and the foundation beam.
The invention also provides a construction method of the assembled composite wall based on the steel pipe, which comprises the following steps:
step 1, manufacturing a steel pipe composite wall skeleton and wall steel bars according to a design result, putting the steel pipe composite wall skeleton, the wall steel bars and the building blocks into fixed positions after assembling a template, installing wall connecting pieces at preset positions, and then pouring concrete and curing; correspondingly burying a foundation embedded part in a foundation beam;
And 2, after the curing of the prefabricated wall boards is completed, removing the mould, paving a mortar layer at the position of the foundation beam corresponding to the bottom end of the prefabricated wall boards, and connecting the wall connecting pieces in the prefabricated wall boards with the foundation embedded pieces in the foundation beam by high-strength bolts after hoisting the wall boards at the correct positions.
Compared with the prior art, the invention has the beneficial effects that:
According to the assembled composite wall based on the steel pipes, the steel pipe composite wall skeleton is formed by splicing a plurality of steel pipes, and steel bars are replaced to serve as the profile steel skeleton in the rib grid of the assembled composite wall body; through the synergistic effect of the steel pipe composite wall skeleton and the concrete, the advantages of better tensile and compressive properties of the steel pipe and strong compressive resistance of the concrete are fully utilized, and the bearing capacity and the earthquake resistance of the assembled composite wall are effectively improved; the fire resistance and the durability of the steel structure member are better than those of the steel structure member; through set up wall connection spare and basis built-in fitting in the bottom of prefabricated wallboard, adopt high-strength bolted connection between wall connection spare and the basis built-in fitting, realized the dry-type connection of prefabricated wallboard basis horizontal seam, assembly process is simple, and stability is higher, and the preparation assembly process is simple.
Further, the wall connecting piece adopts rectangular frame and two connecting plates to make up, and it is by the cuboid node that six boards are constituteed, and each plate of cuboid node is retrained each other, supports each other, the bearing capacity of improvement node that can be fine, effectively strengthened the atress performance and the durability of node.
Furthermore, the rectangular frame is filled with self-compaction fine stone concrete, so that the thicknesses of the Liang Juxing frame and the connecting plate are effectively reduced, and the steel consumption is saved; the advantages of steel and concrete are fully exerted by utilizing the interaction of the rectangular frame, the connecting plate and the self-compacting concrete, so that the node can effectively exert the connecting performance, and has strong bearing capacity, durability and fire resistance.
Furthermore, the foundation embedded part is fixed in the foundation beam through the embedded anchor bars, so that the installation speed of the prefabricated wallboard is effectively improved, the embedded anchor bars play a role in anchoring, the embedded plates play a role in transmitting vertical pressure between the prefabricated wallboard and the foundation beam, and the wall splice plates effectively transmit the tensile force and the shearing force between the prefabricated wallboard and the foundation beam; the prefabricated wallboard and the foundation beam are connected into a whole through the foundation embedded part and the wall connecting part, so that the assembly speed is high and the stability is high; the wall connecting piece has the characteristics of being convenient to connect with adjacent steel members, and has good connection operation space and stable and reliable connection performance.
Furthermore, the steel pipe composite wall skeleton is formed by mutually assembling and welding a plurality of round steel pipes or rectangular steel pipes, so that the steel pipe composite wall skeleton has good ductility and high bearing capacity; the circular steel pipes or the rectangular steel pipes are arranged in a closed mode, concrete is not filled in the steel pipes, the concrete pouring difficulty is reduced, and the dead weight of the assembled composite wall is effectively reduced; meanwhile, the heat insulation performance of the wall body is effectively improved, and the wall body has better fire resistance and durability; compared with the reinforced concrete composite wall, the bearing capacity and the anti-seismic performance of the steel pipe assembled composite wall are obviously improved, and the reduction range of engineering cost is also increased along with the increase of the number of building layers.
Furthermore, the wall thickness and the outer diameter of the rib column are not smaller than the wall thickness and the outer diameter of the rib beam, so that the design principle of strong columns and weak beams is met, the rib beam has enough space to be welded on the rib column, and the stability and the strength of the wall structure are effectively improved.
Furthermore, circular or elliptical through holes are formed in the web plate of the rectangular steel pipe, so that concrete pouring is facilitated; the concrete is filled in the rectangular steel pipes, so that the steel hoop restraining effect of the steel pipes on the concrete is effectively utilized, and the bearing capacity of the assembled composite wall can be remarkably improved.
Further, the building blocks adopt aerated concrete building blocks, recycled aggregate concrete is adopted to replace the traditional concrete materials, and the problems of consumption of raw materials and recycling of part of construction waste are effectively relieved.
Further, through setting up the thick liquid layer of sitting between prefabricated wallboard and foundation beam to ensure the equilibrium of wall body pressurized, effectively increased the reliability of connection, effectively avoided the wall body bottom to pass through the seam phenomenon and appear.
The assembled composite wall based on the steel pipe and the manufacturing method thereof have the advantages of precise component manufacturing quality, large-scale production, high resource utilization rate, small environmental pollution, simple manufacturing process, high installation speed, low engineering cost, high engineering quality and the like.
Drawings
FIG. 1 is a schematic view of the overall structure of a steel pipe-based fabricated composite wall according to the present invention;
FIG. 2 is a schematic view of a wall connector in a steel pipe-based fabricated composite wall according to the present invention;
FIG. 3 is a schematic view of a process for manufacturing wall connectors in a steel pipe-based fabricated composite wall according to the present invention;
fig. 4 is a schematic view of a basic embedded part structure in the steel pipe-based fabricated composite wall according to the present invention;
fig. 5 is a schematic view of the skeleton structure of the steel tube composite wall in embodiment 1;
FIG. 6 is a schematic view of the skeleton structure of the steel tube composite wall in example 2;
fig. 7 is a schematic view of the skeleton structure of the steel tube composite wall in embodiment 3.
The wall comprises a prefabricated wallboard 1, a wall connecting piece 2, a foundation embedded part 3, a foundation beam 4 and a high-strength bolt 5; 11 steel tube composite wall skeleton and 12 building blocks; 111 side rib columns, 112 middle rib columns, 113 upper rib beams, 114 lower rib beams, 115 middle rib beams, 116 rib column end plates; a21 rectangular frame and a 22 connecting plate; 31 wall splice plates, 32 embedded plates and 33 anchoring bars.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the invention more clear, the following specific embodiments are used for further describing the invention in detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1-5, the embodiment provides a steel pipe-based fabricated composite wall, which comprises a prefabricated wall panel 1, a wall connecting piece 2 and a foundation embedded piece 3, wherein the prefabricated wall panel 1 is arranged on a foundation beam 4; the prefabricated wallboard 1 comprises a steel pipe composite wall skeleton 11, building blocks 12 and a concrete outer cladding, wherein the steel pipe composite wall skeleton 11 adopts a rib grid structure formed by mutually assembling and welding a plurality of steel pipes, the rib grid structure is filled with the building blocks 12, the concrete outer cladding is wrapped on the outer side of the rib grid structure, and the periphery of the building blocks 12 is bonded with the concrete outer cladding. Preferably, the building block 12 is an aerated concrete building block, and the aerated concrete building block is recycled aggregate concrete, so that the traditional concrete material is replaced, and the consumption of raw materials and the recycling problem of part of construction waste are effectively relieved.
The steel pipe composite wall skeleton 11 comprises two side rib columns 111, a plurality of middle rib columns 112, an upper side rib beam 113, a lower side rib beam 114 and a plurality of middle rib beams 115; the two side rib columns 111 are vertically arranged in parallel, and a plurality of middle rib columns 112 are vertically arranged between the two side rib columns 111 at intervals; the upper rib beam 113 is horizontally and fixedly arranged at the top ends of the side rib column 111 and the middle rib column 112, the lower rib beam 114 is horizontally and fixedly arranged between two adjacent wall connecting pieces 2, and a plurality of middle rib beams 115 are horizontally and alternately arranged between the upper rib beam 113 and the lower rib beam 114.
The wall connecting piece 2 is arranged at the joint of the side rib column 111 or the middle rib column 112 and the lower side rib beam 114, the upper end of the wall connecting piece 2 is fixedly connected with the bottom end of the side rib column 111 or the middle rib column 112, and the side wall of the wall connecting piece 2 is fixedly connected with the lower side rib beam 114; the side rib column 111, the middle rib column 112, the upper rib beam 113, the lower rib beam 114 and the middle rib beam 115 are all round steel pipes, and rib column end plates 116 are arranged at the top ends of the side rib column 111 and the middle rib column 112.
In the embodiment, the round steel pipe column of the steel pipe composite wall skeleton is long, the top of the round steel pipe column is welded and sealed by the rib column end plate, and the round steel pipe is not filled with concrete, so that the dead weight of the assembled composite wall is reduced; after the steel pipe is closed, the air in the steel pipe cannot circulate, so that heat cannot be effectively transferred, and the heat preservation effect is greatly improved; the steel has the characteristics of good ductility, strong tensile and compressive resistances, and the concrete has the characteristics of strong compressive resistances, fire resistance, high temperature resistance and corrosion resistance; therefore, the round steel pipe and the concrete are reasonably combined together, so that the advantages of the round steel pipe and the concrete can be fully exerted, the respective defects of the round steel pipe and the concrete are overcome, the steel pipe assembled composite wall has good ductility, good anti-seismic performance, bearing capacity, fire resistance and durability superior to those of steel structural members, and good economic benefit is achieved.
The round steel pipe beam and the round steel pipe column are connected at the junction, so that the structural design principle of the strong column and the weak beam is realized; the intersecting line of the end part of the round steel tube beam in the steel tube composite wall skeleton is cut by an intersecting line cutting machine, so that the assembly precision of the structure is improved; the inside of the round steel pipe beam and the round steel pipe column is not filled with concrete, and corresponding materials can be filled in the round steel pipe beam and the round steel pipe column according to the requirements of heat preservation, sound insulation and fire resistance.
In the embodiment, the steel pipe composite wall skeleton is formed by welding round steel pipes in a factory, and concrete is not filled in the round steel pipes, so that the dead weight of the wall body is greatly reduced, and the wall foundation is reduced; because all round steel pipes of the profile steel framework are sealed, the heat preservation performance of the composite wall is greatly improved; compared with the reinforced concrete composite wall, the bearing capacity and the anti-seismic performance of the round steel pipe assembled composite wall are obviously improved, and the reduction range of the engineering cost is also increased along with the increase of the number of building layers.
The wall connecting pieces 2 are uniformly arranged at the bottom end of the prefabricated wallboard 1, and the wall connecting pieces 2 are arranged at the crossing nodes of the rib columns and the lower side rib beams of the prefabricated wallboard 1; the foundation embedded parts 3 are embedded in the top ends of the foundation beams 4, the foundation embedded parts 3 and the wall connecting parts 2 are arranged in one-to-one correspondence, and the wall connecting parts 2 and the foundation embedded parts 3 are connected through high-strength bolts.
The wall connecting piece 2 comprises a rectangular frame 21 and two connecting plates 22; the rectangular frame 21 is formed by surrounding four rectangular plates, and the upper top plate of the rectangular frame 21 is fixedly connected with the bottom ends of the side rib columns or the middle rib columns of the prefabricated wallboard 1; the lower bottom plate of the rectangular frame 21 is flush with the bottom end of the prefabricated wallboard 1; the side plates of the rectangular frame 21 are fixedly connected with the lower rib beams of the prefabricated wallboard 1; two connecting plates 22 are vertically arranged at two ends of the rectangular frame 21 in parallel; the connecting plate 22 is welded and fixed with the end part of the rectangular frame 21, the connecting plate 22 and the rectangular frame 21 are combined to form a hollow cuboid wall connecting piece, and the thickness of the cuboid wall connecting piece is smaller than that of the prefabricated wallboard 1; preferably, the rectangular frame 21 is filled with self-compacting concrete.
The foundation embedded part 3 comprises two wall splice plates 31, an embedded part plate 32 and a plurality of anchoring steel bars 33; the two wall splice plates 31 are vertically arranged in parallel, the wall connecting piece 2 is clamped between the two wall splice plates 31, the wall connecting piece 2 is fixedly connected with the wall splice plates 31 by high-strength bolts, and the connecting plate 22 is tightly attached to the wall splice plates 31; the distance between the two wall splice plates 31 is matched with the thickness of the prefabricated wall panel 1, so that the outer surface of the wall splice plates 31 is flush with the surface of the prefabricated wall panel 1 after the foundation embedded part 3 is spliced with the wall connecting part 2; the embedded part plate 32 is horizontally arranged at the top end of the foundation beam 4, and the lower end of the wall splice plate 31 is fixedly connected with the upper surface of the embedded part plate 32; a plurality of anchor reinforcing bars 33 are vertically and evenly arranged below the embedded part plate 32, the upper ends of the anchor reinforcing bars 33 are fixedly connected with the lower surface of the embedded part plate 32, and the lower ends of the anchor reinforcing bars are embedded in the foundation beam 4.
Wherein, the connecting plate 22 is uniformly provided with a plurality of fixing bolt holes, the reserved bolt holes in the self-compacting concrete filled in the rectangular frame 21 are correspondingly communicated with the reserved bolt holes to form bolt through holes; bolt fixing holes are uniformly formed in the wall splice plate 31, and bolt through holes in the wall connecting piece 2 are correspondingly formed in the bolt fixing holes in the wall splice plate 31; the high-strength bolts sequentially penetrate through the bolt through holes and the fixing bolt holes to fixedly connect the wall splice plates 31 with the wall connecting pieces 2, so that the wall connecting pieces 2 and the foundation embedded pieces 3 are fixedly connected; preferably, four fixing bolt holes are formed in a connecting plate in the wall connecting piece 2 arranged at the bottom end of the side rib column 111, and the four fixing bolt holes are correspondingly arranged in pairs up and down; two fixing bolt holes are arranged on a connecting plate in the wall connecting piece 2 arranged at the bottom end of the middle rib post 112, and the two fixing bolt holes are correspondingly arranged up and down.
Manufacturing process
The invention relates to a manufacturing process of an assembled composite wall based on round steel pipes, which specifically comprises the following steps:
Step1, manufacturing prefabricated wallboard
The prefabricated wallboard comprises a concrete outer cladding, a steel pipe composite wall skeleton, constructional steel bars and aerated concrete blocks; firstly, manufacturing a steel pipe composite wall skeleton and a construction steel reinforcement cage according to a design result, putting the steel pipe composite wall skeleton, the construction steel reinforcement cage and the aerated concrete block into a fixed position after assembling a template, installing a wall connecting piece at a preset position, and then pouring concrete and curing;
Fabrication of foundation beam
Binding foundation beam steel bars, after supporting the templates, placing foundation beam steel bar cages into the templates, placing foundation embedded parts at corresponding positions, pouring concrete, and curing and forming.
And 2, after the curing of the prefabricated wallboard and the foundation beam is completed, removing the die, and paving a 20mm thick slurry layer at the position of the foundation beam corresponding to the rib beam at the lower side of the prefabricated wallboard so as to ensure the tight contact between the prefabricated wallboard and the foundation beam, and connecting a wall connecting piece in the prefabricated wallboard with a foundation embedded piece in the foundation beam by using a high-strength bolt after hoisting the wallboard at the correct position.
Example 2
As shown in fig. 1-4 and 6, the structural design principle and the manufacturing process of embodiment 2 are basically the same as those of embodiment 1, except that rectangular steel pipes are used for the side rib columns 111, the middle rib column 112, the upper rib beam 113, the lower rib beam 114 and the middle rib beam 115 in the steel pipe composite wall skeleton.
In the embodiment 2, the steel pipe composite wall skeleton is formed by welding rectangular steel pipes in a factory, and rib column end plates are arranged at the ends of the rectangular steel pipes, and the rectangular steel pipes in the steel pipe composite wall skeleton are of a sealing structure, so that after the steel pipes are closed, air in the steel pipes cannot circulate, heat cannot be effectively transferred, and the heat preservation effect of the assembled composite wall is effectively improved; the end part of the rectangular steel pipe is sealed, so that no filling concrete is ensured in the rectangular steel pipe, the dead weight of the prefabricated wallboard is greatly reduced, and the specification and the size of the foundation beam are further reduced; compared with a round steel pipe composite skeleton, the rectangular steel pipe composite wall skeleton with the same steel content has higher bearing capacity than the former, and the processing difficulty is also reduced than the former.
The steel has the characteristics of good ductility, strong tensile and compressive resistances, and the concrete has the characteristics of strong compressive resistances, fire resistance, high temperature resistance and corrosion resistance; therefore, the rectangular steel pipe and the concrete are reasonably combined together, so that the advantages of the rectangular steel pipe and the concrete can be fully exerted, the respective defects of the rectangular steel pipe and the concrete are overcome, the steel pipe assembled composite wall has good ductility and good anti-seismic performance, and the bearing capacity, the fire resistance and the durability of the steel pipe assembled composite wall are better than those of steel structural members, so that the steel pipe assembled composite wall has good economic benefits; compared with the reinforced concrete composite wall, the bearing capacity and the earthquake resistance of the rectangular steel pipe assembled composite wall are obviously improved, and the engineering cost is reduced along with the continuous increase of the building height; preferably, corresponding materials can be filled in the rectangular steel pipe column and the rectangular steel pipe beam according to the requirements of heat preservation, sound insulation and fire resistance; thereby realizing the functions of heat preservation, sound insulation and fire resistance; in the embodiment, the cross section sizes of the rectangular steel pipe column and the beam are required to meet the design requirement, and concrete pouring is convenient;
Example 3
As shown in fig. 1-4 and 7, the structural design principle and the manufacturing process of embodiment 3 and embodiment 2 are basically the same, and the difference is that the side rib column 111, the middle rib column 112, the upper side rib beam 113, the lower side rib beam 114 and the middle rib beam 115 in the steel pipe composite wall skeleton all adopt rectangular steel pipes, the web plate of the rectangular steel pipes is parallel to the surface of the prefabricated wall panel 1, and circular or elliptical through holes are uniformly arranged on the web plate of the rectangular steel pipes.
In the embodiment 3, circular or oval through holes are formed in the webs of the rectangular steel tube beams and the rectangular steel tube beam columns according to design requirements, so that concrete pouring is facilitated; the pouring quality of concrete in the process of manufacturing the wallboard is guaranteed, the bonding strength of the section steel and the concrete is enhanced to a certain extent, and the bearing capacity of the wall is improved; the rectangular steel pipes are filled with concrete in the pouring process to form a steel pipe concrete structure, so that the steel hoop restraining effect of the steel pipes on the concrete is effectively utilized, and the bearing capacity of the fabricated composite wall can be remarkably improved.
In the embodiment 3, by arranging circular or elliptical through holes on the rectangular steel tube beams and the rectangular steel tube column webs, the hole arranging positions should follow the positions where the bending moment of the rib columns and the rib beams is smaller, and the compactness of cast-in-place concrete is not affected; in specific operation, the holes are arranged near the reverse bending points of the rib columns and the rib beams, namely: for the rib column, when the rib column is positioned at the bottommost rib grid, the reverse bending point of the rib column is 1/3 of the height of the rib column from the top of the rib column; when the rib is positioned on other rib grids, the reverse bending point is 1/2 of the height of the rib column; for the rib beam, when the rib beam is positioned at the end rib grid of the composite wall, the reverse bending point of the rib beam is 2/3 of the length of the rib beam from the outer side beam end of the rib beam; when the rib is positioned on other rib grids, the reverse bending point is the middle point of the length of the rib beam; the maximum diameter of the circular or elliptic through hole is not more than 70% of the section height of the rectangular steel pipe, and 50% of the section height of the rectangular steel pipe is preferably taken; by arranging the holes on the web plate of the rectangular steel pipe, concrete is convenient to pour, and the bonding strength of the profile steel and the concrete is improved; the damage of the rectangular steel pipe composite wall is ensured to follow the principle of three anti-seismic defense lines of building blocks, rib grids and frames (namely frames consisting of side rib beams and side rib columns), so that the damage of the composite wall belongs to ductile damage and has strong bearing capacity and anti-seismic performance.
According to the assembled composite wall based on the steel pipe and the construction method thereof, the wall connecting piece is arranged in the area formed by the crossing node of the rib column and the bottom rib beam of the prefabricated wall board, the foundation embedded part is embedded in the foundation beam, and when the composite wall is connected with the foundation beam, the wall connecting piece and the foundation embedded part are connected into a whole through the high-strength bolt, so that the dry fixed connection of the assembled composite wall and the foundation beam is realized; when the rectangular frame is filled with self-compacting concrete, the label of the self-compacting fine stone concrete is determined by design, but not lower than C40; when self-compacting concrete is poured, thin-wall steel pipes with the same diameter are inserted into corresponding positions of the fixing bolt holes on the connecting plates so as to reserve the space of the bolt through holes, and the rectangular frame is filled with the concrete in a compact manner in the filling process; when the last connecting plate is welded on the rectangular frame, the strength of the filled concrete reaches 50% of the design strength, and mortar with the thickness of about 1cm is smeared on the self-compacting concrete surface so as to ensure that the inner surface of the connecting plate is in close contact with the self-compacting concrete surface; in the invention, the wall connecting piece is welded and fixed with the adjacent steel pipe column and the steel pipe beam.
According to the assembled composite wall based on the steel pipe and the construction method thereof, the wall connecting piece is arranged at the bottom end node of the rib column, the wall connecting piece is filled with the self-compaction fine stone concrete, the wall thickness of the rectangular frame and the wall thickness of the connecting plate can be designed to be very small, the interaction of the rectangular frame, the connecting plate and the self-compaction concrete can fully excavate the respective advantages of steel and concrete, the node can be promoted to effectively exert the connection performance, and the assembled composite wall has strong bearing capacity, durability and fire resistance; the wall connecting piece can be conveniently connected with rib beams and rib column internal profile steel through factory welding seams, the connection form is simple and reliable, and the stress path is simple and clear; the wall body is connected with the wall body splice plate welded on the embedded part plate at the joint through the high-strength bolt, so that the dry connection of the wall body and the foundation beam on site is ensured, the construction quality is improved, and the construction speed is improved; the wall plate of the wall connecting piece has small wall thickness, low manufacturing difficulty and strong operability, so that the processing cost is greatly reduced; the wall splice plate can be arranged in the thickness range of the wall, and decoration and fitment are not affected.
The above embodiment is only one of the implementation manners capable of implementing the technical solution of the present invention, and the scope of the claimed invention is not limited to the embodiment, but also includes any changes, substitutions and other implementation manners easily recognized by those skilled in the art within the technical scope of the present invention.

Claims (7)

1. The assembled composite wall based on the steel pipe is characterized by comprising a prefabricated wall plate (1), a wall connecting piece (2) and a foundation embedded piece (3), wherein the prefabricated wall plate (1) is arranged on a foundation beam (4); the prefabricated wallboard (1) comprises a steel pipe composite wall skeleton (11), building blocks (12) and a concrete outer cladding, wherein the steel pipe composite wall skeleton (11) adopts a rib grid structure formed by splicing a plurality of steel pipes, the rib grid structure is filled with the building blocks (12), and the concrete outer cladding is wrapped on the outer side of the rib grid structure;
the wall connecting pieces (2) are uniformly arranged at the bottom end of the prefabricated wallboard (1) and are arranged at the joints of rib columns and rib beams of the prefabricated wallboard (1); the foundation embedded part (3) is embedded at the top end of the foundation beam (4), and the wall connecting part (2) is connected with the foundation embedded part (3) by adopting a high-strength bolt (5);
The wall connecting piece (2) comprises a rectangular frame (21) and two connecting plates (22); the rectangular frame (21) is formed by encircling four rectangular plates, and an upper top plate of the rectangular frame (21) is fixedly connected with the bottom ends of rib columns of the prefabricated wall plates (1); the lower bottom plate of the rectangular frame (21) is flush with the bottom end of the prefabricated wallboard (1); the side plates of the rectangular frame (21) are fixedly connected with rib beams of the prefabricated wallboard (1); the two connecting plates (22) are vertically arranged at two ends of the rectangular frame (21) in parallel; a plurality of bolt through holes are uniformly formed in the wall connecting piece (2), and the high-strength bolts penetrate through the bolt through holes and are fixedly connected with the foundation embedded piece (3);
the rectangular frame (21) is filled with self-compacting concrete;
The foundation embedded part (3) comprises two wall splice plates (31), an embedded part plate (32) and a plurality of anchoring steel bars (33); the two wall splice plates (31) are vertically arranged in parallel, the wall connecting piece (2) is clamped between the two wall splice plates (31), and the wall connecting piece (2) is fixedly connected with the wall splice plates (31) by adopting high-strength bolts (5); the embedded part plate (32) is horizontally arranged at the top end of the foundation beam (4), and the lower end of the wall splicing plate (31) is fixedly connected with the upper surface of the embedded part plate (32); the anchor bars (33) are vertically and uniformly arranged below the embedded part plate (32), the upper ends of the anchor bars (33) are fixedly connected with the lower surface of the embedded part plate (32), and the lower ends of the anchor bars are embedded in the foundation beam (4).
2. The steel tube-based fabricated composite wall according to claim 1, wherein the steel tube composite wall skeleton (11) comprises two side rib columns (111), a plurality of middle rib columns (112), an upper side rib beam (113), a lower side rib beam (114) and a plurality of middle rib beams (115);
The two side rib columns (111) are vertically arranged in parallel, and a plurality of middle rib columns (112) are vertically arranged between the two side rib columns (111) at intervals; the upper rib beams (113) are horizontally and fixedly arranged at the top ends of the side rib columns (111) and the middle rib columns (112), the lower rib beams (114) are horizontally and fixedly arranged between two adjacent wall connecting pieces (2), and a plurality of middle rib beams (115) are horizontally arranged between the upper rib beams (113) and the lower rib beams (114) at intervals;
The wall connecting piece (2) is arranged at the joint of the side rib column (111) or the middle rib column (112) and the lower side rib beam (114), the upper end of the wall connecting piece (2) is fixedly connected with the bottom end of the side rib column (111) or the middle rib column (112), and the side wall of the wall connecting piece (2) is fixedly connected with the lower side rib beam (114); the side rib column (111), the middle rib column (112), the upper rib beam (113), the lower rib beam (114) and the middle rib beam (115) are all round steel pipes or rectangular steel pipes, and rib column end plates (116) are arranged at the top ends of the side rib column (111) and the middle rib column (112).
3. The steel pipe-based fabricated composite wall according to claim 2, wherein wall thicknesses of the side rib columns (111) and the middle rib columns (112) are not smaller than wall thicknesses of the upper side rib beam (113), the lower side rib beam (114) and the middle rib beam (115); the outer diameters of the side rib post (111) and the middle rib post (112) are not smaller than the outer diameters of the upper side rib beam (113), the lower side rib beam (114) and the middle rib beam (115).
4. A fabricated composite wall based on steel pipes as claimed in claim 2, wherein the side rib columns (111) and the middle rib columns (112) are provided in a through-length manner; the upper rib beam (113), the lower rib beam (114) and the middle rib beam (115) are disconnected at the junction of the middle rib column (112), and the upper rib beam (113), the lower rib beam (114) and the middle rib beam (115) are disconnected.
5. A steel pipe based fabricated composite wall according to claim 2, characterized in that the web of rectangular steel pipe is parallel to the surface of the prefabricated wall panel (1), and circular or oval through holes are uniformly provided in the web of rectangular steel pipe.
6. A steel pipe based fabricated composite wall according to claim 1, wherein the blocks (12) are aerated concrete blocks; a mortar layer is arranged between the prefabricated wallboard (1) and the foundation beam (4).
7. A method of constructing a steel pipe-based fabricated composite wall according to any one of claims 1 to 6, comprising the steps of:
step 1, manufacturing a steel pipe composite wall skeleton and wall steel bars according to a design result, putting the steel pipe composite wall skeleton, the wall steel bars and the building blocks into fixed positions after assembling a template, installing wall connecting pieces at preset positions, and then pouring concrete and curing; correspondingly burying a foundation embedded part in a foundation beam;
And 2, after the curing of the prefabricated wall boards is completed, removing the mould, paving a mortar layer at the position of the foundation beam corresponding to the bottom end of the prefabricated wall boards, and connecting the wall connecting pieces in the prefabricated wall boards with the foundation embedded pieces in the foundation beam by high-strength bolts after hoisting the wall boards at the correct positions.
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