CN111749366A - Steel pipe-based fabricated composite wall and construction method thereof - Google Patents
Steel pipe-based fabricated composite wall and construction method thereof Download PDFInfo
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- CN111749366A CN111749366A CN202010760795.1A CN202010760795A CN111749366A CN 111749366 A CN111749366 A CN 111749366A CN 202010760795 A CN202010760795 A CN 202010760795A CN 111749366 A CN111749366 A CN 111749366A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 172
- 239000010959 steel Substances 0.000 title claims abstract description 172
- 239000002131 composite material Substances 0.000 title claims abstract description 96
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 239000004567 concrete Substances 0.000 claims abstract description 62
- 238000005253 cladding Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 239000011376 self-consolidating concrete Substances 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 239000004570 mortar (masonry) Substances 0.000 claims description 7
- 238000004873 anchoring Methods 0.000 claims description 5
- 238000009415 formwork Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 12
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000011150 reinforced concrete Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000011031 large-scale manufacturing process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4114—Elements with sockets
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6806—Waterstops
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—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
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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
- E04B2/562—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with fillings between the load-bearing elongated members
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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
- E04B2/58—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal
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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
- 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
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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
- 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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- 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)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Mechanical Engineering (AREA)
- Load-Bearing And Curtain Walls (AREA)
- Rod-Shaped Construction Members (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, wherein the prefabricated wallboards are arranged on a foundation beam; the prefabricated wall board comprises a steel pipe composite wall framework, building blocks and a concrete outer cladding layer, wherein the steel pipe composite wall framework adopts a rib lattice structure formed by splicing a plurality of steel pipes, and the rib lattice structure is filled with the building blocks; the wall connecting pieces are uniformly arranged at the bottom ends of the prefabricated wallboards and are arranged at the nodes of the rib columns and the rib beams of the prefabricated wallboards; the foundation embedded part is embedded at the top end of the foundation beam, and the wall connecting piece 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 framework and the concrete, the advantages of better tensile and compressive properties of the steel pipe and strong compressive property of the concrete are fully utilized, and the bearing capacity and the anti-seismic property of the assembled composite wall are effectively improved; the wall connecting piece and the foundation embedded part are connected through the high-strength bolt, so that dry connection of the horizontal seam of the prefabricated wall plate foundation is realized, and the stability is high.
Description
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 assembly type building is a building type produced in factories and installed on construction sites, and has the advantages of precise component manufacturing quality, large-scale production, high resource utilization rate, small environmental pollution, high installation speed, low construction cost, high engineering quality and the like; the rib lattices of the traditional multi-ribbed composite wall are made of reinforced concrete, and because the section size of the reinforced concrete rib lattices is smaller and the diameter of reinforcing steel bars is smaller, the traditional multi-ribbed composite wall has lower vertical and horizontal bearing capacity and cannot be used in high-rise buildings, and the traditional multi-ribbed composite wall is mostly only applied to multi-storey civil buildings until now.
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, and aims to solve the technical problems that the existing multi-ribbed composite wall is low in vertical and horizontal bearing capacity and the connection design of key nodes of the composite wall is unclear.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides an assembled composite wall based on steel pipes, which comprises prefabricated wall boards, wall connecting pieces and foundation embedded pieces, wherein the prefabricated wall boards are arranged on foundation beams; the prefabricated wall board comprises a steel pipe composite wall framework, building blocks and a concrete outer cladding layer, wherein the steel pipe composite wall framework adopts a rib lattice structure formed by splicing a plurality of steel pipes, the rib lattice structure is filled with the building blocks, and the concrete outer cladding layer wraps the outer side of the rib lattice structure;
the wall connecting pieces are uniformly arranged at the bottom ends of the prefabricated wallboards and are arranged at the nodes of the rib columns and the rib beams of the prefabricated wallboards; the foundation embedded part is embedded at the top end of the foundation beam, and the wall connecting piece and the foundation embedded part are connected by a high-strength bolt.
Furthermore, the wall connecting piece comprises a rectangular frame and two connecting plates; the rectangular frame is formed by encircling four rectangular plates, and an upper top plate of the rectangular frame is fixedly connected with the bottom ends of the rib columns of the prefabricated wall plate; the lower bottom plate of the rectangular frame is flush with the bottom end of the prefabricated wall plate; the side plates of the rectangular frame are fixedly connected with the rib beam of the prefabricated wall plate; 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 high-strength bolts penetrate through the bolt through holes and are fixedly connected with the foundation embedded part.
Furthermore, the rectangular frame of the rectangular frame is filled with self-compacting concrete.
Further, the foundation embedded part comprises two wall splicing plates, an embedded part plate and a plurality of anchoring steel bars; the two wall body splicing plates are vertically arranged in parallel, the wall body connecting piece is clamped between the two wall body splicing plates, and the wall body connecting piece and the wall body splicing plates are fixedly connected by adopting high-strength bolts; the embedded plate is horizontally arranged at the top end of the foundation beam, and the lower end of the wall splicing plate is fixedly connected with the upper surface of the embedded plate; a plurality of anchor reinforcing bars are vertically and evenly arranged below the embedded plate, the upper ends of the anchor reinforcing bars are fixedly connected with the lower surface of the embedded plate, and the lower ends of the anchor reinforcing bars are embedded in the foundation beam.
Further, the steel pipe composite wall framework 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 the plurality of middle rib columns are vertically arranged between the two side rib columns at intervals; the upper edge rib beam is horizontally and fixedly arranged at the top ends of the edge rib columns and the middle rib columns, the lower edge rib beam is horizontally and fixedly arranged between two adjacent wall body connecting pieces, and the plurality of middle rib beams are horizontally arranged between the upper edge rib beam and the lower edge rib beam at intervals;
the wall connecting piece is arranged at a node of the side rib column or the middle rib column and the lower 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 rib beam; the side rib columns, the middle rib columns, the upper side rib beam, the lower side rib beam and the middle rib beam are all made of round steel pipes or rectangular steel pipes, and rib column end plates are arranged at the top ends of the side rib columns and the middle rib columns.
Furthermore, the wall thickness of the side rib columns and the wall thickness of the middle rib columns are not smaller than that of the upper side rib beam, the lower side rib beam and the wall thickness of 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.
Furthermore, the side rib columns and the middle rib columns are arranged in a full-length mode; the upper edge rib beam, the lower edge rib beam and the middle rib beam are arranged at the intersection of the middle rib column and the upper edge rib beam, the lower edge rib beam and the middle rib beam in a disconnected mode.
Further, the web of rectangle steel pipe is parallel with the surface of prefabricated wallboard, evenly is provided with circular or oval through-hole on the web of rectangle steel pipe.
Further, the building blocks are aerated concrete building blocks; and a mortar layer is arranged between the prefabricated wall plate 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 framework and wall body steel bars according to a design result, placing the steel pipe composite wall framework, the wall body steel bars and building blocks into a well-defined position after assembling a template, installing a wall body connecting piece at a preset position, and then pouring concrete and curing; correspondingly embedding the foundation embedded part in the foundation beam;
and 2, after the maintenance of the prefabricated wall board is finished, removing the formwork, laying a mortar layer at the position of the foundation beam corresponding to the bottom end of the prefabricated wall board, hoisting the wall board to the correct position, and connecting the wall connecting piece in the prefabricated wall board with the foundation embedded part in the foundation beam by using a high-strength bolt.
Compared with the prior art, the invention has the beneficial effects that:
according to the fabricated composite wall based on the steel pipes, the steel pipe composite wall skeleton is formed by splicing a plurality of steel pipes, and the steel bars are replaced to be used as the section steel skeleton in the rib grids of the fabricated composite wall body; by the synergistic effect of the steel pipe composite wall framework and the concrete, the advantages of better tensile and compressive properties of the steel pipes and strong compressive property of the concrete are fully utilized, and the bearing capacity and the seismic performance of the assembled composite wall are effectively improved; the fire resistance and the durability of the composite material are superior to those of a steel structural member; the wall connecting piece and the foundation embedded part are arranged at the bottom of the prefabricated wall board, and the wall connecting piece and the foundation embedded part are connected through the high-strength bolt, so that dry connection of a horizontal seam of a prefabricated wall board foundation is realized, the assembling process is simple, the stability is higher, and the manufacturing and assembling process is simple.
Furthermore, the wall connecting piece is combined by a rectangular frame and two connecting plates, the rectangular node is composed of six plates, and the plates of the rectangular node are mutually constrained and supported, so that the bearing capacity of the node can be well improved, and the stress performance and the durability of the node are effectively enhanced.
Furthermore, the self-compacting fine aggregate concrete is filled in the rectangular frame, so that the thickness of the beam rectangular frame and the connecting plate is effectively reduced, and the consumption of steel is saved; by utilizing the interaction of the rectangular frame, the connecting plate and the self-compacting concrete, the advantages of steel and concrete are fully exerted, the connection performance of the node can be effectively exerted, and the node 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 body splicing plates effectively transmit tension and shear between the prefabricated wallboard and the foundation beam; the prefabricated wall plate and the foundation beam are connected with the wall connecting piece into a whole through the foundation embedded part, so that the assembly speed is high, and the stability is high; the wall connecting piece also has the characteristic of being convenient for to be connected with adjacent steel members, has good connection operation space, and has stable and reliable connection performance.
Furthermore, the steel pipe composite wall framework is formed by mutually assembling and welding a plurality of round steel pipes or rectangular steel pipes, and has good ductility and high bearing capacity; the round steel pipe or the rectangular steel pipe is arranged in a closed manner, and concrete is not filled in the steel pipe, so that the concrete pouring difficulty is reduced, and the self weight of the assembled composite wall is effectively reduced; meanwhile, the heat insulation performance of the wall is effectively improved, and the wall has better fire resistance and durability; compared with reinforced concrete composite walls, the steel pipe assembly type composite wall has the advantages that the bearing capacity and the anti-seismic performance are obviously improved, and the descending range of the construction cost is increased along with the increase of the number of the construction layers.
Furthermore, the wall thickness and the outer diameter of the rib column are not smaller than those of the rib beam, so that the design principle of a strong column and a weak beam 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, the circular or oval through holes are formed in the web plate of the rectangular steel pipe, so that concrete can be poured conveniently; concrete is filled in the rectangular steel pipes, 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 obviously improved.
Furthermore, the building blocks are made of aerated concrete blocks, and recycled aggregate concrete is adopted to replace the traditional concrete material, so that the problems of consumption of raw materials and recycling of part of construction wastes are effectively solved.
Furthermore, a mortar layer is arranged between the prefabricated wall plate and the foundation beam, so that the uniformity of the pressed wall body is ensured, the connection reliability is effectively improved, and the occurrence of a crack penetrating phenomenon at the bottom of the wall body is effectively avoided.
The steel pipe-based fabricated composite wall 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 construction cost, high engineering quality and the like.
Drawings
FIG. 1 is a schematic view of the overall structure of a fabricated composite wall based on steel pipes according to the present invention;
FIG. 2 is a schematic structural diagram of a wall connector in the steel pipe-based fabricated composite wall according to the present invention;
FIG. 3 is a schematic diagram illustrating a process of manufacturing a wall connector for use in an assembled composite wall based on steel pipes 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 structural view of the steel pipe composite wall skeleton described in example 1;
FIG. 6 is a schematic structural view of the steel pipe composite wall framework in embodiment 2;
fig. 7 is a structural schematic view of the steel pipe composite wall framework described in embodiment 3.
The prefabricated wall plate comprises 1 prefabricated wall plates, 2 wall connecting pieces, 3 foundation embedded pieces, 4 foundation beams and 5 high-strength bolts; 11, steel pipe composite wall skeleton, 12 building blocks; 111 side rib column, 112 middle rib column, 113 upper rib beam, 114 lower rib beam, 115 middle rib beam, 116 rib column end plate; 21 rectangular frame, 22 connecting plate; 31 wall splicing plates, 32 embedded plates and 33 anchoring reinforcing steel bars.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more apparent, the following embodiments further describe the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
As shown in fig. 1-5, the embodiment provides an assembly type composite wall based on steel pipes, which includes a prefabricated wall panel 1, a wall connecting member 2 and a foundation embedded member 3, wherein the prefabricated wall panel 1 is arranged on a foundation beam 4; prefabricated wallboard 1 includes steel pipe composite wall skeleton 11, building block 12 and concrete surrounding layer, and steel pipe composite wall skeleton 11 adopts many steel pipes to assemble the rib check structure that the welding formed each other, is filled with building block 12 in the rib check structure, and concrete surrounding layer parcel is in the outside of rib check structure, and building block 12 bonds with the concrete surrounding layer all around. (ii) a Preferably, the building blocks 12 are aerated concrete blocks, and the aerated concrete blocks are recycled aggregate concrete instead of traditional concrete materials, so that the problems of consumption of raw materials and recycling of part of building wastes are effectively solved.
The steel tube composite wall framework 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 the 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 rib columns 111 and the middle rib columns 112, the lower rib beam 114 is horizontally and fixedly arranged between two adjacent wall connecting pieces 2, and the plurality of middle rib beams 115 are horizontally arranged between the upper rib beam 113 and the lower rib beam 114 at intervals.
The wall connecting piece 2 is arranged at a node of the side rib column 111 or the middle rib column 112 and the lower 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 rib beam 114; the side rib columns 111, the middle rib column 112, the upper side rib beam 113, the lower side rib beam 114 and the middle rib beam 115 are all made of round steel pipes, and rib column end plates 116 are arranged at the top ends of the side rib columns 111 and the middle rib column 112.
In the embodiment, the circular steel pipe column of the steel pipe composite wall framework is through long, the top of the circular steel pipe column is welded and sealed by the ribbed column end plate, and concrete is not filled in the circular steel pipe, so that the self 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 good ductility and strong tensile and compressive capacities, and the concrete has the characteristics of strong compressive capacity, fire resistance, high temperature resistance and corrosion resistance; therefore, the circular steel pipe and the concrete are reasonably combined together, so that the advantages of the circular steel pipe and the concrete can be fully exerted, the respective defects of the circular steel pipe and the concrete are overcome, the steel pipe assembly type composite wall is good in ductility and has good anti-seismic performance, the bearing capacity, the fire resistance and the durability of the steel pipe assembly type composite wall are superior to those of steel structural members, and the steel pipe assembly type composite wall has good economic benefits.
The round steel pipes are arranged at the intersection of the round steel pipe beams and the round steel pipe columns in a disconnecting manner, so that the structural design principle of the strong column and the weak column is realized; the intersecting line of the end part of the circular steel pipe beam in the steel pipe composite wall framework is cut by an intersecting line cutting machine, so that the assembly precision of the structure is improved; the round steel pipe beams and the round steel pipe columns are not filled with concrete, and corresponding materials can be filled in the round steel pipe beams and the round steel pipe columns according to the requirements of heat preservation, sound insulation and fire resistance.
In the embodiment, the steel pipe composite wall framework 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 foundation of the wall body is reduced; all round steel pipes of the profile steel framework are sealed, so that the heat insulation performance of the composite wall is greatly improved; compared with reinforced concrete composite walls, the circular steel tube assembly type composite wall has the advantages that the bearing capacity and the anti-seismic performance are obviously improved, and the descending range of the engineering cost is increased along with the increase of the number of the construction layers.
The wall connecting pieces 2 are uniformly arranged at the bottom ends of the prefabricated wall boards 1, and the wall connecting pieces 2 are arranged at the crossed nodes of the rib columns and the lower rib beams of the prefabricated wall boards 1; the foundation embedded parts 3 are embedded at the top ends of the foundation beams 4, the foundation embedded parts 3 are arranged in one-to-one correspondence with the wall connecting parts 2, and the wall connecting parts 2 are connected with the foundation embedded parts 3 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 an 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 wall panel 1; the lower bottom plate of the rectangular frame 21 is flush with the bottom end of the prefabricated wall panel 1; the side plates of the rectangular frame 21 are fixedly connected with the lower edge rib beam of the prefabricated wall plate 1; the 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 wall plate 1; preferably, the rectangular frame 21 is filled with self-compacting concrete.
The foundation embedded part 3 comprises two wall splicing plates 31, an embedded part plate 32 and a plurality of anchoring steel bars 33; the two wall splicing plates 31 are vertically arranged in parallel, the wall connecting piece 2 is clamped between the two wall splicing plates 31, the wall connecting piece 2 and the wall splicing plates 31 are fixedly connected by adopting high-strength bolts, and the connecting plate 22 and the wall splicing plates 31 are arranged in a close fit manner; the distance between the two wall splicing plates 31 is matched with the thickness of the prefabricated wall panel 1, so that after the foundation embedded part 3 is spliced with the wall connecting part 2, the outer surfaces of the wall splicing plates 31 are flush with the surface of the prefabricated wall panel 1; the embedded 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 plate 32; a plurality of anchor reinforcing bars 33 are vertically and evenly arranged below the embedded plate 32, the upper ends of the anchor reinforcing bars 33 are fixedly connected with the lower surface of the embedded plate 32, and the lower ends of the anchor reinforcing bars 33 are embedded in the foundation beam 4.
A plurality of fixing bolt holes are uniformly formed in the connecting plate 22, bolt holes are reserved in self-compacting concrete filled in the rectangular frame 21, and the fixing bolt holes and the reserved bolt holes are correspondingly communicated to form bolt through holes; bolt fixing holes are uniformly formed in the wall body splicing plates 31, and bolt through holes in the wall body connecting piece 2 are arranged corresponding to the bolt fixing holes in the wall body splicing plates 31; the high-strength bolts sequentially penetrate through the bolt through holes and the fixing bolt holes to fixedly connect the wall splicing plates 31 with the wall connecting pieces 2, so that the wall connecting pieces 2 and the basic embedded pieces 3 are fixedly connected; preferably, four fixing bolt holes are formed in the 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 arranged correspondingly up and down; two fixing bolt holes are formed in the connecting plate in the wall connecting piece 2 arranged at the bottom end of the middle rib post 112, and the two fixing bolts are arranged in a vertically corresponding mode.
Manufacturing process
The invention relates to a manufacturing process of an assembly type composite wall based on a round steel pipe, which specifically comprises the following steps:
step 1, manufacturing of prefabricated wall board
The prefabricated wall board comprises a concrete outer cladding layer, a steel pipe composite wall framework, construction steel bars and aerated concrete blocks; firstly, manufacturing a steel pipe composite wall framework and a constructional reinforcement cage according to a design result, placing the steel pipe composite wall framework, the constructional reinforcement cage and aerated concrete blocks into a fixed position after assembling a template, installing a wall connecting piece at a preset position, and then pouring and curing concrete;
manufacture of foundation beam
And binding the reinforcing steel bars of the foundation beam, placing the reinforcement cage of the foundation beam into the template after the template is supported, placing the foundation embedded part at the corresponding position, and then pouring concrete and curing and forming.
And 2, after the maintenance of the prefabricated wall panel and the foundation beam is finished, removing the formwork, laying a 20mm thick mortar layer at the position of the foundation beam corresponding to the lower edge rib beam of the prefabricated wall panel to ensure that the prefabricated wall panel is in close contact with the foundation beam, and after the wall panel is hoisted to the correct position, connecting the wall connecting piece in the prefabricated wall panel with the foundation embedded piece in the foundation beam by using a high-strength bolt.
Example 2
As shown in fig. 1-4 and 6, the structural design principle and the manufacturing process of embodiment 2 are substantially the same as those of embodiment 1, except that the side rib columns 111, the middle rib columns 112, the upper side rib beam 113, the lower side rib beam 114 and the middle rib beam 115 in the steel tube composite wall frame are all made of rectangular steel tubes.
In embodiment 2, the steel tube composite wall framework is formed by welding rectangular steel tubes in a factory, rib column end plates are arranged at the ends of the rectangular steel tubes, and the rectangular steel tubes in the steel tube composite wall framework are all of a sealing structure; the ends of the rectangular steel pipes are sealed, so that no concrete is filled in the rectangular steel pipes, the dead weight of the prefabricated wall plate is greatly reduced, and the standard size of the foundation beam can be reduced; compared with a circular steel pipe composite framework, the rectangular steel pipe composite wall framework with the same steel content has higher bearing capacity and lower processing difficulty than the circular steel pipe composite framework.
The steel has good ductility and strong tensile and compressive capacities, and the concrete has the characteristics of strong compressive capacity, 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 assembly type composite wall is good in ductility and good in anti-seismic performance, the bearing capacity, the fire resistance and the durability of the steel pipe assembly type composite wall are superior to those of steel structural members, and the steel pipe assembly type composite wall has good economic benefits; compared with reinforced concrete composite walls, the rectangular steel pipe assembly type composite wall has obviously improved bearing capacity and anti-seismic performance, and the reduction of the construction cost is increased along with the continuous increase of the height of a building; 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 sectional dimensions of the rectangular steel pipe column and the rectangular steel pipe beam meet the design requirements and are convenient for pouring concrete;
example 3
As shown in fig. 1-4 and 7, the structural design principle and the manufacturing process of embodiment 3 are substantially the same as those of embodiment 2, except that the side rib columns 111, the middle rib columns 112, the upper side rib beam 113, the lower side rib beam 114 and the middle rib beam 115 in the steel tube composite wall frame are all rectangular steel tubes, the web of each rectangular steel tube is parallel to the surface of the prefabricated wall panel 1, and the web of each rectangular steel tube is uniformly provided with circular or elliptical through holes.
In embodiment 3, circular or elliptical through holes are formed in the webs of the rectangular steel tubular beams and the rectangular steel tubular beam columns according to design requirements, so that concrete can be conveniently poured; the pouring quality of concrete during the manufacturing of the wallboard is ensured, the bonding strength of the section steel and the concrete is enhanced to a certain extent, and the bearing capacity of the wall body is improved; concrete is filled in the rectangular steel pipes in the pouring process to form a steel pipe concrete structure, 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 obviously improved.
In embodiment 3, circular or elliptical through holes are formed in the rectangular steel pipe beam and the rectangular steel pipe column web, and the hole forming positions are determined to be positions where the bending moments of the rib columns and the rib beams are small, so that the compactness of cast-in-place concrete is not affected; in specific operation, the holes are arranged near the bending points of the rib columns and the rib beams, namely: for a rib post, when it is at the lowest rib grid, its inflection point is 1/3 from the top of the rib post; when it is in other rib lattices, the reverse bending point is 1/2 of the height of the rib column; for a rib, when it is at the end rib grid of the composite wall, its kick-back point is long from the rib outboard beam end 2/3; when the rib beam is positioned in other rib lattices, the reverse bending point is the middle point of the length of the rib beam; the maximum diameter of the circular or elliptical through hole is not more than 70% of the height of the section of the rectangular steel pipe, and preferably 50% of the height of the section of the rectangular steel pipe; the holes are formed in the web plate of the rectangular steel pipe, so that concrete can be poured conveniently, and the bonding strength of the section steel and the concrete is improved; the method ensures that the damage of the rectangular steel pipe composite wall follows the principle of three anti-seismic defense lines of building block-rib lattice-frame (namely a frame 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 fabricated composite wall based on the steel pipes and the construction method thereof, the wall body connecting piece is arranged in the area formed by the crossed nodes of the rib columns and the bottom rib beams of the prefabricated wall boards, the foundation embedded part is embedded in the foundation beam, and when the composite wall is connected with the foundation beam, the wall body connecting piece and the foundation embedded part are connected into a whole through the high-strength bolt, so that the dry-type fixed connection of the fabricated composite wall and the foundation beam is realized; when the self-compacting concrete is filled in the rectangular frame, the mark number of the self-compacting fine aggregate concrete is determined by design and is not lower than C40; when the self-compacting concrete is poured, inserting thin-wall steel pipes with the same diameter into corresponding positions of fixing bolt holes on a connecting plate to reserve spaces of bolt through holes, and ensuring that the concrete is densely filled in a rectangular frame 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 designed strength, and mortar with the thickness of about 1cm is smeared on the surface of the self-compacting concrete so as to ensure that the inner surface of the connecting plate is closely contacted with the surface of the self-compacting concrete; the wall connecting piece is fixed with the adjacent steel pipe columns and steel pipe beams by welding.
According to the steel pipe-based fabricated composite wall and the construction method thereof, the wall body connecting piece is arranged at the bottom end node of the rib column, the self-compacting fine stone concrete is filled in the wall body connecting piece, 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-compacting concrete can fully excavate the respective advantages of steel and concrete, the node can be promoted to effectively exert the connection performance, and the steel pipe-based fabricated composite wall has strong bearing capacity, durability and fire resistance; the wall connecting piece can be conveniently connected with the rib beam and the inner section steel of the rib column through the factory welding seam, the connecting form is simple and reliable, and the stress way is simple and clear; the wall body is connected with the wall body splice plate welded on the embedded plate at the node through the high-strength bolt, so that the on-site dry connection between the wall body and the foundation beam is ensured, the construction quality is improved, and the construction speed is increased; 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 body splice plate can be arranged in the thickness range of the wall body, and decoration and fitment are not influenced.
The above-described embodiment is only one of the embodiments that can implement the technical solution of the present invention, and the scope of the present invention is not limited by the embodiment, but includes any variations, substitutions and other embodiments that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed.
Claims (10)
1. The assembled composite wall based on the steel pipes is characterized by comprising prefabricated wall boards (1), wall body connecting pieces (2) and foundation embedded pieces (3), wherein the prefabricated wall boards (1) are arranged on foundation beams (4); the prefabricated wall board (1) comprises a steel pipe composite wall framework (11), building blocks (12) and a concrete outer cladding, wherein the steel pipe composite wall framework (11) adopts a rib lattice structure formed by splicing a plurality of steel pipes, the rib lattice structure is filled with the building blocks (12), and the concrete outer cladding is wrapped on the outer side of the rib lattice structure;
the wall connecting pieces (2) are uniformly arranged at the bottom end of the prefabricated wall board (1) and are arranged at the nodes of the rib columns and the rib beams of the prefabricated wall board (1); the foundation embedded parts (3) are embedded at the top ends of the foundation beams (4), and the wall connecting pieces (2) are connected with the foundation embedded parts (3) through high-strength bolts (5).
2. The steel pipe-based fabricated composite wall as claimed in claim 1, wherein the wall connecting member (2) comprises a rectangular frame (21) and two connecting plates (22); the rectangular frame (21) is formed by surrounding 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 plate (1); the lower bottom plate of the rectangular frame (21) is flush with the bottom end of the prefabricated wall plate (1); the side plates of the rectangular frame (21) are fixedly connected with the rib beam of the prefabricated wall plate (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 high-strength bolts penetrate through the bolt through holes and then are fixedly connected with the foundation embedded part (3).
3. A fabricated composite wall based on steel pipes according to claim 2, characterized in that the rectangular frame (21) is filled with self-compacting concrete in the rectangular frame (21).
4. The assembled composite wall based on steel pipes of claim 1, wherein the foundation embedded part (3) comprises two wall splicing plates (31), an embedded part plate (32) and a plurality of anchoring steel bars (33); the two wall splicing plates (31) are vertically arranged in parallel, the wall connecting piece (2) is clamped between the two wall splicing plates (31), and the wall connecting piece (2) and the wall splicing plates (31) are fixedly connected by adopting high-strength bolts (5); the embedded 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 plate (32); a plurality of anchor reinforcing bars (33) are vertically and evenly arranged below the embedded plate (32), the upper ends of the anchor reinforcing bars (33) are fixedly connected with the lower surface of the embedded plate (32), and the lower ends of the anchor reinforcing bars are embedded in the foundation beam (4).
5. The fabricated composite wall based on steel pipes according to claim 1, wherein 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 the plurality of middle rib columns (112) are vertically arranged between the two side rib columns (111) at intervals; the upper side rib beam (113) is horizontally and fixedly arranged at the top ends of the side rib columns (111) and the middle rib columns (112), the lower side rib beam (114) is horizontally fixed between two adjacent wall body connecting pieces (2), and a plurality of middle rib beams (115) are horizontally arranged between the upper side rib beam (113) and the lower side rib beams (114) at intervals;
the wall body connecting piece (2) is arranged at a node of the side rib column (111) or the middle rib column (112) and the lower rib beam (114), the upper end of the wall body 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 body connecting piece (2) is fixedly connected with the lower rib beam (114); the side rib columns (111), the middle rib columns (112), the upper side rib beam (113), the lower side rib beam (114) and the middle rib beam (115) are all made of round steel pipes or rectangular steel pipes, and rib column end plates (116) are arranged at the top ends of the side rib columns (111) and the middle rib columns (112).
6. The fabricated composite wall based on steel pipes according to claim 5, wherein the wall thickness of the side rib columns (111) and the center rib columns (112) is not less than that of the upper side rib beam (113), the lower side rib beam (114) and the center rib beam (115); the outer diameters of the side rib columns (111) and the middle rib columns (112) are not less than the outer diameters of the upper side rib beam (113), the lower side rib beam (114) and the middle rib beam (115).
7. The fabricated composite wall based on steel pipes of claim 5, wherein the side rib columns (111) and the middle rib columns (112) are arranged in a full length manner; the upper rib beam (113), the lower rib beam (114), the middle rib beam (115) and the middle rib column (112) are arranged at the intersection, and the upper rib beam (113), the lower rib beam (114) and the middle rib beam (115) are arranged in a disconnected mode.
8. The fabricated composite wall based on steel pipes as claimed in claim 5, wherein the web of the rectangular steel pipes is parallel to the surface of the prefabricated wall panel (1), and the web of the rectangular steel pipes is uniformly provided with circular or elliptical through holes.
9. The fabricated composite wall based on steel pipes of claim 1, wherein the blocks (12) are aerated concrete blocks; a mortar layer is arranged between the prefabricated wall plate (1) and the foundation beam (4).
10. A construction method of an assembled steel pipe-based composite wall as claimed in any one of claims 1 to 9, comprising the steps of:
step 1, manufacturing a steel pipe composite wall framework and wall body steel bars according to a design result, placing the steel pipe composite wall framework, the wall body steel bars and building blocks into a well-defined position after assembling a template, installing a wall body connecting piece at a preset position, and then pouring concrete and curing; correspondingly embedding the foundation embedded part in the foundation beam;
and 2, after the maintenance of the prefabricated wall board is finished, removing the formwork, laying a mortar layer at the position of the foundation beam corresponding to the bottom end of the prefabricated wall board, hoisting the wall board to the correct position, and connecting the wall connecting piece in the prefabricated wall board with the foundation embedded part in the foundation beam by using a high-strength bolt.
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| CN115405024A (en) * | 2022-10-09 | 2022-11-29 | 陶君 | Assembled steel pipe concrete's shear force wall structure |
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