CN111663681A - Assembled wall body connecting structure and construction method thereof - Google Patents

Assembled wall body connecting structure and construction method thereof Download PDF

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Publication number
CN111663681A
CN111663681A CN202010676117.7A CN202010676117A CN111663681A CN 111663681 A CN111663681 A CN 111663681A CN 202010676117 A CN202010676117 A CN 202010676117A CN 111663681 A CN111663681 A CN 111663681A
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China
Prior art keywords
wall body
prefabricated wall
steel bar
prefabricated
steel bars
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CN202010676117.7A
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Chinese (zh)
Inventor
黄炜
张家瑞
范珍辉
韩文超
张皓
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Xian University of Architecture and Technology
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Xian University of Architecture and Technology
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Priority to CN202010676117.7A priority Critical patent/CN111663681A/en
Publication of CN111663681A publication Critical patent/CN111663681A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66Sealings
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92Protection against other undesired influences or dangers
    • E04B1/98Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/162Connectors or means for connecting parts for reinforcements
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
    • E04H9/021Bearing, supporting or connecting constructions specially adapted for such buildings

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

The invention discloses an assembled wall body connecting structure and a construction method thereof, wherein the assembled wall body connecting structure comprises an upper prefabricated wall body, wherein a plurality of connecting steel bars are vertically pre-embedded in the upper prefabricated wall body, and a plurality of steel bar connecting pieces are pre-embedded at the bottom end of the upper prefabricated wall body; the upper ends of the connecting steel bars are exposed out of the top end of the prefabricated wall body, and the lower ends of the connecting steel bars are fixedly connected with the upper ends of the steel bar connecting pieces; the upper prefabricated wall body, the prefabricated floor slab and the lower prefabricated wall body are sequentially connected from top to bottom; after the upper ends of the connecting steel bars in the lower prefabricated wall body penetrate through the prefabricated floor slab, the connecting steel bars extend into the steel bar connecting pieces in the upper prefabricated wall body and are fixedly connected through nuts; according to the invention, the upper prefabricated wall body and the lower prefabricated wall body are effectively connected with the floor slab or the foundation through the connection between the steel bar connecting piece and the connecting steel bar, so that the strength of a horizontal joint between the wall bodies is improved; the connecting steel bars are arranged in the wall body in a full length mode, so that the stress is effectively transmitted; the connecting steel bars are connected with the steel bar connecting pieces through nuts, so that the horizontal earthquake acting force can be resisted together, and the reliability is high.

Description

Assembled wall body connecting structure and construction method thereof
Technical Field
The invention belongs to the technical field of assembled walls, and particularly relates to an assembled wall connecting structure and a construction method thereof.
Background
In recent years, with rapid economic development and rapid advancement of building industrialization technology, the field of prefabricated building has been developed greatly, national and industrial standards of prefabricated concrete structures are established, including an assembled integral frame structure, an assembled integral shear wall structure, an assembled integral frame-cast-in-place shear wall (core tube) structure and the like, and the design idea is to ensure the performance of the structure in equal cast-in-place basically through joint bearing capacity calculation and construction measures and design by referring to a design method of the cast-in-place structure. The design method provides a feasible solution for the popularization of the fabricated concrete structure, but the problems of complex node construction, low production and installation efficiency caused by the common arrangement of ribs of the members, difficult implementation of acceptance inspection and the like exist, and the problems are gradually exposed in the actual engineering.
At present, the commonly used vertical connection modes mainly comprise sleeve grouting connection, reinforced bar grout anchor lap joint connection and the like, and the connection has the problems of more field wet operation, inconvenient grouting quality detection, large influence of the connection performance by the construction operation level of constructors and the like; in addition, the applicability of the existing standard to multiple layers and high layers is not obviously distinguished, the novel material is not sufficiently applied, the technical system such as the fabricated shear wall is obviously too complex for the multi-layer building, and the economic requirement cannot be considered when the prefabricated shear wall is applied to the low-rise and multi-layer concrete structures.
In order to promote the popularization and application of the assembly type concrete structure system in the low-rise building, further exert the cost and efficiency advantages of a novel connecting technology and a novel wall structure in the low-rise concrete structure, and put emphasis on the assembly node structure and the wall structure on the basis of guaranteeing the equal cast-in-place of the industrialized building, the assembly type wall connecting structure and the construction method thereof are provided.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides an assembly type wall body connecting structure and a construction method thereof, and aims to solve the technical problems of complex connecting structure and poor connecting performance when sleeve grouting or reinforced bar grout anchor lapping is adopted in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides an assembly type wall body connecting structure which comprises an upper prefabricated wall body, a prefabricated floor slab and a lower prefabricated wall body, wherein the upper prefabricated wall body is provided with a plurality of prefabricated wall bodies; vertically pre-embedding a plurality of connecting steel bars in the upper prefabricated wall body or the lower prefabricated wall body, pre-embedding a plurality of steel bar connecting pieces at the bottom end of the upper prefabricated wall body or the lower prefabricated wall body, and enabling the steel bar connecting pieces to correspond to the connecting steel bars in position one by one; the upper ends of the connecting steel bars are exposed out of the top ends of the upper prefabricated wall body or the lower prefabricated wall body, and the lower ends of the connecting steel bars are fixedly connected with the upper ends of the steel bar connecting pieces;
the upper prefabricated wall body, the prefabricated floor slab and the lower prefabricated wall body are sequentially connected from top to bottom; after the upper ends of the connecting steel bars in the lower prefabricated wall body penetrate through the prefabricated floor slab, the upper ends of the connecting steel bars in the lower prefabricated wall body extend into the steel bar connecting pieces in the upper prefabricated wall body and are fixedly connected through nuts.
Further, the steel bar connecting piece comprises a connecting piece body and a threaded sleeve; the connecting piece body is embedded at the bottom end of the upper prefabricated wall body or the lower prefabricated wall body and is of a hollow cubic structure;
one side vertical surface of the connecting piece body is set as an opening surface, and the opening surface is flush with the upper prefabricated wall body or the lower prefabricated wall body; the threaded sleeve is vertically and fixedly arranged at the center of the outer side of the top surface of the connecting piece body, and the lower ends of the connecting steel bars are inserted into the threaded sleeve and fixedly connected together through threads; the bottom surface of connecting piece body is provided with the reinforcing bar mounting hole, and the upper end of connecting reinforcement extends into the connecting piece body after running through the reinforcing bar mounting hole, adopts nut fixed connection between the upper end of connecting reinforcement and the bottom surface of connecting piece body.
Furthermore, the steel bar mounting holes are elliptical holes; a gasket is arranged between the nut and the connecting piece body.
Furthermore, the upper prefabricated wall body or the lower prefabricated wall body adopts a composite wall body structure; the composite wall structure comprises two side rib columns, a plurality of middle rib columns, a plurality of rib beams, building blocks and a concrete surface layer; the two side rib columns are vertically arranged in parallel, the plurality of middle rib columns are vertically arranged between the two side rib columns at intervals, the plurality of rib beams are horizontally arranged between the side rib columns and the middle rib columns, and the side rib columns, the middle rib columns and the rib beams form a lattice structure; building blocks are filled in the sash structure, and the concrete surface layer is coated on the outer sides of the sash structure and the building blocks; the connecting steel bars vertically penetrate through the side rib columns and the middle rib columns, and the steel bar connecting pieces are embedded at the bottom ends of the side rib columns and the middle rib columns.
Furthermore, the side rib columns or the middle rib columns comprise a plurality of longitudinal bars, a plurality of stirrups and concrete castings, the longitudinal bars are vertically arranged around the outer sides of the connecting steel bars, and the stirrups are arranged on the longitudinal bars at intervals along the vertical direction; a plurality of reinforcing stirrups are arranged on the outer side of the steel bar connecting piece; the concrete pouring body is coated on the outer sides of the longitudinal bars, the stirrups and the reinforcing stirrups.
Furthermore, the building blocks are sand aerated concrete blocks or ash aerated concrete blocks.
Furthermore, when the lower end of the lower prefabricated wall body is connected with the ground, a plurality of embedded steel bars are uniformly arranged in the foundation and correspond to the steel bar connecting pieces in the lower prefabricated wall body one by one; the upper ends of the embedded steel bars extend into the steel bar connecting pieces in the lower prefabricated wall body and are fixedly connected through nuts.
Furthermore, the contact surface between the adjacent upper prefabricated wall body or the lower prefabricated wall body is sealed by mortar; the contact surface between the upper prefabricated wall and the floor slab is sealed by mortar; the contact surface between the lower prefabricated wall and the prefabricated floor slab or the ground is sealed by mortar.
Furthermore, a steel bar through hole is formed in the prefabricated floor slab, the connecting steel bar penetrates through the steel bar through hole, and mortar is poured into the steel bar through hole; the prefabricated floor slab comprises a prefabricated composite bottom plate and a cast-in-place layer, and the cast-in-place layer is arranged on the upper portion of the prefabricated composite bottom plate.
The invention also provides a construction method of the assembled wall connecting structure, which comprises the following steps:
step 1, processing and manufacturing a steel bar connecting piece according to design requirements, and processing external threads at two ends of a connecting steel bar;
step 2, manufacturing a prefabricated wall and a prefabricated floor slab; wherein, when the prefabricated wall body of preparation, specifically do: binding wall body reinforcing steel bars, vertically arranging connecting reinforcing steel bars in the wall body reinforcing steel bars, fixedly installing reinforcing steel bar connecting pieces at the lower ends of the connecting reinforcing steel bars, and pouring concrete to obtain a prefabricated wall body;
step 3, hoisting the prefabricated wall body to the installation position, enabling the connecting steel bars of the next layer of prefabricated wall body or the embedded steel bars in the foundation to extend into the steel bar connecting pieces of the previous layer of prefabricated wall body in a centering manner, and then fixedly connecting the steel bar connecting pieces with the connecting steel bars or the embedded steel bars in the foundation together by adopting nuts;
and 4, filling mortar in the reinforcing steel bar through holes of the reinforcing steel bar connecting piece and the prefabricated floor slab for sealing to obtain the assembled wall structure.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides an assembly type wall body connecting structure, which is characterized in that connecting steel bars and steel bar connecting pieces are arranged in a prefabricated wall body, and the upper prefabricated wall body and the lower prefabricated wall body are effectively connected with a floor slab or a foundation by utilizing the connection between the steel bar connecting pieces and the connecting steel bars or the foundation embedded steel bars, so that the strength of a horizontal joint between the wall bodies is improved; the connecting steel bars are arranged in the wall body in a full length mode, and the wall body is vertically connected into a whole through the steel bar connecting piece, so that the stress is effectively transmitted; the connecting steel bars are connected with the steel bar connecting pieces through nuts, and can resist horizontal earthquake acting force together; the invention has the characteristics of simple structure, clear stress, convenient construction and high reliability.
Furthermore, the steel bar connecting piece adopts a combination form of a threaded sleeve and a connecting piece body, and the threaded sleeve and the connecting steel bar are fixed by threads, so that the connecting and the mounting are convenient, and the connecting effect is better; through adopting one side open-ended cube body structure as the connecting piece body, the connecting reinforcement and the reinforcing bar connecting piece assembly in the prefabricated wall body of lower floor of being convenient for have ensured connecting reinforcement and reinforcing bar connecting piece's effective connection, have improved the stability and the reliability of structure.
Further, the adoption sets up the reinforcing bar mounting hole into oval hole, and the connection reinforcing bar in the wall body of being convenient for or the embedded steel bar in the ground insert the connecting piece body and to the regulation of connection reinforcing bar position, have improved assembly efficiency, have ensured assembly structure's quality.
Furthermore, the prefabricated wall body adopts rib columns and rib beams to form a lattice structure, and the building blocks, the lattices and the edge connecting members can sequentially play a main role under the action of small earthquake, medium earthquake and large earthquake, release earthquake energy stage by stage, have definite multiple earthquake-proof defense lines and have the stress characteristic of ductility and earthquake resistance; the structural arrangement of the distributed reinforcing steel bars and the connecting reinforcing steel bars in the rib columns effectively limits the development of cracks of the building blocks and improves the bearing capacity of the wall body; meanwhile, the wall body is not damaged by the method of internally arranging the reinforcing steel bar connecting pieces, the damage to the wall body is reduced, materials and processes are saved, the connecting reinforcing steel bars are arranged in the prefabricated wall body in a full-length mode, the connecting reinforcing steel bars in the vertically connected wall body are connected into a whole by the reinforcing steel bar connecting pieces, the strength of the wall body is increased, the stability of the structure is improved, and the effective transmission of stress is ensured.
Furthermore, the building blocks are sand aerated concrete blocks or ash aerated concrete blocks, recycled aggregate concrete is adopted, and light blocks are filled in the building blocks to replace the traditional concrete material, so that the problems of consumption of raw materials and recycling of part of building wastes can be effectively relieved, and the self weight of the prefabricated part is effectively reduced by more than 30% while the quality is ensured.
Furthermore, the contact surface between the adjacent upper prefabricated wall body or the lower prefabricated wall body, the contact surface between the upper prefabricated wall body and the prefabricated floor slab and the contact surface between the lower prefabricated wall body and the prefabricated floor slab or the ground are sealed by mortar, so that the pressure balance of the wall bodies is ensured, and the connection reliability is effectively improved; meanwhile, the phenomenon of penetrating seams at the bottom of the wall body is avoided.
The invention also provides a construction method of the assembled wall body connecting structure, when the wall body is assembled, the connecting steel bars are inserted into the steel bar connecting pieces, the nuts are adopted for fixed connection, and then mortar is adopted for sealing the steel bar connecting pieces, so that the assembly process is simple, the construction safety is high, the production construction efficiency of the assembled wall plate is effectively improved, the assembly quality is improved, the mechanical property of the wall body is improved, and the cost is greatly reduced; the connection effectiveness can be detected through the steel bar mounting hole; the invention adopts high-strength mortar to fill the steel bar connecting piece, increases the contact area between concrete and connecting steel bars, can restrict the deformation of the connecting steel bars by post-cast concrete, simultaneously bonds the connecting steel bars, the post-cast concrete and member concrete in the area of a steel bar mounting hole to play a role together, and simultaneously facilitates the processing of a wall decoration layer.
Drawings
FIG. 1 is a schematic elevational view of an assembled wall connection structure according to the present invention;
FIG. 2 is a schematic cross-sectional view of an assembled wall connection structure according to the present invention;
fig. 3 is a schematic structural view of a reinforcing bar coupler according to the assembly type wall coupling structure of the present invention.
Wherein, 1, prefabricating a wall body on the upper part, 2, prefabricating a floor slab and 3, prefabricating a wall body on the lower part; 4 side rib columns, 5 middle rib columns, 6 rib beams, 7 building blocks, 8 nuts and 9 gaskets; 10 longitudinal bars, 11 stirrups, 12 connecting piece bodies and 13 threaded sleeves; connecting reinforcing steel bars on 101, and connecting reinforcing steel bar connecting pieces on 102; prefabricating a superposed bottom plate 201 and casting a layer 202 in situ; under 301, connecting reinforcing steel bars, and under 302, connecting reinforcing steel bar connectors.
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.
As shown in fig. 1-3, the invention provides an assembly type wall body connecting structure, which comprises an upper prefabricated wall body 1, a prefabricated floor slab 2 and a lower prefabricated wall body 3; the upper prefabricated wall 1, the prefabricated floor slab 2 and the lower prefabricated wall 3 are sequentially connected from top to bottom; the lower end of the lower prefabricated wall body 3 is connected with the lower prefabricated wall body or the ground.
A plurality of upper connecting steel bars 101 are vertically pre-embedded in the upper prefabricated wall body 1, a plurality of upper steel bar connecting pieces 102 are pre-embedded at the bottom end of the upper prefabricated wall body 1, and the upper steel bar connecting pieces 102 correspond to the upper connecting steel bars 101 in position one by one; the upper connecting steel bars 101 are arranged in the upper prefabricated wall 1 in a full length mode, the upper ends of the upper connecting steel bars 101 are exposed out of the top end of the upper prefabricated wall 1, and the lower ends of the upper connecting steel bars 101 are fixedly connected with the upper ends of the upper steel bar connecting pieces 102.
A plurality of lower connecting steel bars 301 are vertically embedded in the lower prefabricated wall body 3, a plurality of lower steel bar connecting pieces 302 are embedded at the bottom end of the lower prefabricated wall body 3, and the positions of the lower steel bar connecting pieces 302 and the positions of the lower connecting steel bars 301 are in one-to-one correspondence; the lower connecting steel bars 301 are arranged in the lower prefabricated wall body 1 in a full length mode, the upper ends of the lower connecting steel bars 301 are exposed out of the top end of the lower prefabricated wall body 3, and the lower ends of the lower connecting steel bars 301 are fixedly connected with the upper ends of the lower steel bar connecting pieces 302.
When the upper end of the lower prefabricated wall body 3 is connected with the upper prefabricated wall body 1, the upper ends of the lower connecting steel bars 301 in the lower prefabricated wall body 3 penetrate through the prefabricated floor slab 2 and then extend into the upper steel bar connecting pieces 102 in the upper prefabricated wall body 1, the lower connecting steel bars 301 are fixedly connected with the upper steel bar connecting pieces 102 through nuts, and therefore the assembly connection between the lower prefabricated wall body 3 and the upper prefabricated wall body 1 is achieved.
When the lower end of the lower prefabricated wall body 3 is connected with the lower prefabricated wall body, the upper ends of the connecting steel bars in the lower prefabricated wall body penetrate through the lower prefabricated floor slab and then extend into the lower steel bar connecting piece 302 in the lower prefabricated wall body 3, and the connecting steel bars in the lower prefabricated wall body are fixedly connected with the lower steel bar connecting piece 302 through nuts, so that the lower prefabricated wall body 3 and the lower prefabricated wall body are assembled and connected.
When the lower end of the lower prefabricated wall body 3 is connected with the ground, a plurality of embedded steel bars are uniformly arranged in the foundation, and the embedded steel bars correspond to the lower steel bar connecting pieces 302 one by one; the lower ends of the embedded steel bars are fixedly inserted into the foundation, the upper ends of the embedded steel bars extend into the lower steel bar connecting pieces 302 in the lower prefabricated wall body 3, the embedded steel bars are fixedly connected with the lower steel bar connecting pieces 302 through nuts, and the lower prefabricated wall body 3 is assembled and connected with the ground.
The upper steel bar connecting piece 102 and the lower steel bar connecting piece 302 are identical in structure, the upper steel bar connecting piece 102 or the lower steel bar connecting piece comprises a connecting piece body 12 and a threaded sleeve 13, and the connecting piece body 12 is pre-buried at the bottom end of the upper prefabricated wall body 1 or the lower prefabricated wall body 3; the connecting piece body 12 is of a hollow cubic structure, one side vertical face of the connecting piece body 12 is set to be an opening face, and the opening face is flush with the surface of the upper prefabricated wall body 1 or the lower prefabricated wall body 3; the threaded sleeve 13 is vertically and fixedly arranged at the center of the outer side of the top surface of the connecting piece body 12, and the threaded sleeve 13 and the connecting piece body 12 are fixed by welding or integrally formed; both ends of the upper connecting steel bar 101 or the lower connecting steel bar 102 are provided with external threads, the lower end of the upper connecting steel bar 101 or the lower connecting steel bar 102 is inserted into the threaded sleeve 13, and the upper connecting steel bar 101 or the lower connecting steel bar 102 is fixedly connected with the threaded sleeve 13 through threads; the bottom surface of the connecting piece body 12 is provided with a steel bar mounting hole, the upper end of the connecting steel bar or the embedded steel bar penetrates through the steel bar mounting hole and then extends into the connecting piece body 12, and the upper end of the connecting steel bar or the embedded steel bar is fixedly connected with the bottom surface of the connecting piece body 12 through a nut; preferably, the reinforcing steel bar mounting holes are elliptical holes, so that connecting reinforcing steel bars or embedded reinforcing steel bars can be conveniently inserted into the connecting piece body 12 and the position of the prefabricated wall board can be conveniently adjusted, and the mounting accuracy of the prefabricated wall board is ensured; preferably, a gasket 9 is arranged between the nut and the connecting piece body; by adopting the cubic structure with an opening at one side as the connecting piece body, the connecting steel bars in the lower-layer prefabricated wall body can be conveniently assembled with the steel bar connecting piece, the effective connection of the connecting steel bars and the steel bar connecting piece is ensured, and the stability and the reliability of the structure are improved; the connecting steel bars in the vertical wall body are connected into a whole by the steel bar connecting piece, so that the wall body is vertically connected into a whole, and the effective transmission of stress is realized.
The upper prefabricated wall body 1 and the lower prefabricated wall body 3 both adopt composite wall body structures, and each composite wall body structure comprises two side rib columns 4, a plurality of middle rib columns 5, a plurality of rib beams 6, building blocks 7 and a concrete surface layer; the two side rib columns 4 are vertically arranged in parallel, the middle rib columns 5 are vertically arranged between the two side rib columns 4 at intervals, the rib beams 6 are horizontally arranged between the side rib columns 4 and the middle rib columns 5, the side rib columns 4, the middle rib columns 5 and the rib beams 6 form a lattice structure, building blocks 7 are filled in the lattice structure, and a concrete surface layer is coated on the outer sides of the lattice structure and the building blocks 7 to form a composite wall body structure; the connecting steel bars vertically penetrate through the side rib columns 4 and the middle rib columns 5, and the upper steel bar connecting piece 102 or the lower steel bar connecting piece 302 is embedded at the bottom ends of the side rib columns 4 and the middle rib columns 5; the invention adopts the rib columns and the rib beams to form a lattice structure, and the building blocks, the lattices and the edge connecting members can sequentially play a main role under the action of small earthquake, medium earthquake and large earthquake, release earthquake energy stage by stage, have definite multi-seismic-resistant defense lines and have the stress characteristic of ductility and earthquake resistance; meanwhile, the method of internally arranging the steel bar connecting piece does not damage the wall body, reduces the damage to the wall body and saves materials and working procedures; the connecting steel bars are arranged in the prefabricated wall body in the full length mode, so that the strength of the wall body is improved, and the stability of the structure is improved.
The side rib column 4 or the middle rib column 5 comprises a plurality of longitudinal ribs 10, a plurality of stirrups 11 and a concrete casting, the longitudinal ribs 10 are vertically arranged around the outer sides of the connecting steel bars, the stirrups 11 are arranged on the longitudinal ribs 10 at intervals along the vertical direction, a plurality of reinforcing stirrups are arranged on the outer sides of the steel bar connecting pieces, and the concrete casting is coated on the longitudinal ribs 10, the stirrups 11 and the outer sides of the reinforcing stirrups; the development of building block cracks is effectively limited through the structural arrangement of longitudinal bars, stirrups and connecting steel bars in the side rib columns 4 and the middle rib columns 5, and the bearing capacity of the wall body is improved.
In the invention, the building block 7 is made of a sand aerated concrete building block or a lime aerated concrete building block, and the sand aerated concrete building block or the lime aerated concrete building block is made of siliceous materials, such as sand and calcareous materials; wherein, lime and cement are used as main raw materials; and incorporating a gas generating agent, such as aluminum powder; the light porous silicate product is prepared by the technical processes of material mixing, stirring, pouring, precuring, cutting, autoclaving, curing and the like; the concrete adopts recycled aggregate and is filled with light block materials to replace the traditional concrete material; effectively relieving the problems of consumption of raw materials and recycling of part of construction wastes, and effectively reducing the self weight of the prefabricated part by more than 30 percent while ensuring the quality.
The contact surface between the adjacent upper prefabricated wall body 1 or the lower prefabricated wall body 3 is sealed by adopting mortar, the contact surface between the upper prefabricated wall body 1 and the prefabricated floor slab 2 is sealed by adopting mortar, and the contact surface between the lower prefabricated wall body 3 and the prefabricated floor slab 2 or the ground is sealed by adopting mortar, so that the pressure balance of the 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 avoided.
The prefabricated floor slab 2 is provided with a steel bar through hole, the connecting steel bar penetrates through the steel bar through hole, and mortar is poured into the steel bar through hole; the prefabricated floor slab 2 comprises a prefabricated composite bottom plate 201 and a cast-in-place layer 202, wherein the cast-in-place layer 202 is arranged on the upper portion of the prefabricated composite bottom plate 201.
According to the assembled wall body connecting structure, the connecting steel bars and the steel bar connecting pieces are arranged in the prefabricated wall body, and the upper prefabricated wall body, the lower prefabricated wall body and the floor slab or the foundation are effectively connected by utilizing the connection between the steel bar connecting pieces and the connecting steel bars or the foundation embedded steel bars, so that the strength of a horizontal joint between the wall bodies is improved; the connecting steel bars are arranged in the wall body in a full length mode, and the prefabricated wall boards are vertically connected into a whole through steel bar connecting pieces, so that the stress is effectively transmitted; the connecting steel bars are connected with the steel bar connecting pieces through nuts, and can resist horizontal earthquake acting force together; the invention has the characteristics of simple structure, clear stress, convenient construction and high reliability.
The invention also provides a construction method of the assembled wall connecting structure, which comprises the following steps:
step 1, processing and manufacturing a steel bar connecting piece according to design requirements, and processing external threads at two ends of a connecting steel bar;
step 2, manufacturing a prefabricated wall and a prefabricated floor slab; wherein, when the prefabricated wall body of preparation, specifically do: binding side rib columns, middle rib columns and rib beam steel bars, vertically arranging connecting steel bars in the wall body steel bars, fixedly installing steel bar connecting pieces at the lower ends of the connecting steel bars, erecting a mold, placing building blocks, pouring concrete, and removing the mold to obtain a prefabricated wall body;
step 3, hoisting the prefabricated wall body to the installation position, enabling the connecting steel bars of the next layer of prefabricated wall body or the embedded steel bars in the foundation to extend into the steel bar connecting pieces of the previous layer of prefabricated wall body in a centering manner, and then fixedly connecting the steel bar connecting pieces with the connecting steel bars or the embedded steel bars in the foundation together by adopting nuts;
and 4, filling mortar in the reinforcing steel bar through holes of the reinforcing steel bar connecting piece and the prefabricated floor slab for sealing to obtain the assembled wall structure.
According to the invention, when the wall body is assembled, the connecting steel bars are inserted into the steel bar connecting pieces, the connecting steel bars are fixedly connected by the nuts, and then the steel bar connecting pieces are sealed by mortar, so that the assembling process is simple, the construction safety is high, the production construction efficiency of the assembled wallboard is effectively improved, the assembling quality is improved, the mechanical property of the wall body is improved, and the cost is greatly reduced; the connection effectiveness can be detected through the steel bar mounting hole; the invention adopts high-strength mortar to fill the steel bar connecting piece, increases the contact area between concrete and connecting steel bars, can restrict the deformation of the connecting steel bars by post-cast concrete, simultaneously bonds the connecting steel bars, the post-cast concrete and member concrete in the area of a steel bar mounting hole to play a role together, and simultaneously facilitates the processing of a wall decoration layer.
The composite wall structure provided by the invention can sequentially play a main role under the action of small earthquake, medium earthquake and large earthquake by arranging the building blocks, the sash structures and the edge connecting members, releases earthquake energy by stages, has definite multiple earthquake-proof defense lines and has the stress characteristic of ductility and earthquake resistance; meanwhile, the built-in steel bar connecting piece does not damage the wall body, so that the damage to the wall body is reduced, and the materials and the working procedures are saved; the recycled aggregate concrete is adopted, and the lightweight block materials are filled in the recycled aggregate concrete to replace the traditional concrete material, so that the problems of consumption of raw materials and recycling of part of construction wastes can be effectively solved; the assembled composite wall body consists of a novel wall body structure and a novel horizontal connection mode, and is mainly suitable for low-rise civil and industrial buildings.
Examples
The embodiment provides an assembly type wall body connecting structure which comprises an upper prefabricated wall body, a prefabricated floor slab and a lower prefabricated wall body; the upper prefabricated wall body, the prefabricated floor slab and the lower prefabricated wall body are sequentially connected from top to bottom; the lower end of the lower prefabricated wall body is connected with the lower prefabricated wall body or the ground.
A plurality of connecting steel bars are vertically pre-embedded in the upper prefabricated wall body or the lower prefabricated wall body, a plurality of steel bar connecting pieces are pre-embedded at the bottom end of the upper prefabricated wall body or the lower prefabricated wall body, and the steel bar connecting pieces correspond to the connecting steel bars in position one by one; the connecting steel bars are arranged in the upper prefabricated wall body or the lower prefabricated wall body in a full length mode, the upper ends of the connecting steel bars are exposed out of the top end of the upper prefabricated wall body or the top end of the lower prefabricated wall body, and the lower ends of the connecting steel bars are fixedly connected with the upper ends of the steel bar connecting pieces.
After the upper ends of the connecting steel bars in the lower prefabricated wall body penetrate through the prefabricated floor slab, the connecting steel bars extend into the steel bar connecting pieces in the upper prefabricated wall body, and the connecting steel bars are fixedly connected with the upper steel bar connecting pieces through nuts, so that the assembly connection between the lower prefabricated wall body and the upper prefabricated wall body is realized.
The upper prefabricated wall body and the lower prefabricated wall body both adopt composite wall body structures, and each composite wall body structure comprises two side rib columns, a plurality of middle rib columns, a plurality of rib beams, building blocks and a concrete surface layer; the two side rib columns are vertically arranged in parallel, the middle rib columns are vertically arranged between the two side rib columns at intervals, the rib beams are horizontally arranged between the side rib columns and the middle rib columns, the side rib columns, the middle rib columns and the rib beams form a lattice structure, building blocks are filled in the lattice structure, and a concrete surface layer is coated on the outer sides of the lattice structure and the building blocks to form a composite wall body structure; wherein the width of the cross section of the side rib column is more than 120 mm; the width of the section of the middle rib column is more than 80 mm; the size of the rib beam is larger than 60 mm; the connecting steel bars vertically penetrate through the side rib columns and the middle rib columns, and the steel bar connecting pieces are embedded at the lower ends of the side rib columns or the middle rib columns.
The building blocks are light building blocks which are integrally cast by using industrial waste materials such as slag, fly ash and the like or other ecological materials as main materials. The connecting steel bars vertically penetrate through the side rib columns and the middle rib columns, and the steel bar connecting pieces are embedded at the lower ends of the side rib columns or the middle rib columns; in this embodiment, the floorbar setting of prefabricated wallboard has been cancelled, under the prerequisite that satisfies the wall structure requirement, has reduced the complexity of prefabricated wallboard structure, has reduced the self weight of prefabricated wallboard.
The side rib column or the middle rib column comprises longitudinal bars, stirrups and concrete castings, the longitudinal bars are vertically arranged around the outer sides of the connecting steel bars, the stirrups are arranged on the outer sides of the longitudinal bars at intervals in the vertical direction, and the concrete castings are coated on the outer sides of the longitudinal bars and the stirrups; the structural arrangement of the distributed reinforcing steel bars and the connecting reinforcing steel bars in the rib columns effectively limits the development of cracks of the building blocks and improves the bearing capacity of the wall body; meanwhile, the method of internally arranging the steel bar connecting piece does not damage the wall body, reduces the damage to the wall body and saves materials and working procedures.
The contact surface between the adjacent upper prefabricated wall body or the lower prefabricated wall body is sealed by mortar; the contact surface between the upper prefabricated wall and the prefabricated floor slab is sealed by mortar; the contact surface between the lower prefabricated wall body and the prefabricated floor slab or the ground is sealed by mortar, so that the balance of the pressed wall body is ensured, the connection reliability is effectively improved, and the phenomenon of crack penetration at the bottom of the wall body can be avoided.
The steel bar connecting piece comprises a threaded sleeve and a connecting piece body, the upper end of the threaded sleeve is connected with the lower end of the connecting steel bar, and the lower end of the threaded sleeve is fixedly connected with the upper end of the connecting piece body.
The connecting piece body adopts a cubic steel box with an opening at one side, and the connecting piece body and the threaded sleeve are fixed by welding or are in an integrated structure; an elliptical hole is formed in the bottom of the cubic steel box, so that the insertion and displacement adjustment of connecting steel bars at the lower part of the component installation are facilitated; connecting reinforcing steel bars in the lower prefabricated wall body or embedded reinforcing steel bars in the foundation penetrate through the reinforcing steel bar mounting holes and then extend into the connecting piece body, and the connecting reinforcing steel bars in the prefabricated wall body or the embedded reinforcing steel bars in the foundation are fixedly connected with the connecting piece body through nuts; the reinforcing steel bar mounting holes are elliptical holes, and gaskets are arranged between the fixing nuts and connecting reinforcing steel bars in the lower-layer wall body or embedded reinforcing steel bars in the foundation.
The construction method of the assembly type wall body connecting structure comprises the following steps:
step 1: connecting steel bar and steel bar connecting piece processing
Rolling two ends of the connecting steel bar by using a special rolling machine tool to form external threads, and forming the threads at one time; welding steel plates according to design requirements to form a cubic steel box structure with an opening on one side, welding and fixing a threaded sleeve at the upper end of the cubic steel box, forming a steel bar mounting hole at the lower end of the cubic steel box, and then fixedly connecting the lower end of a connecting steel bar with the threaded sleeve;
step 2: manufacturing method of prefabricated composite wall
Firstly, assembling a template, placing a concrete protective layer cushion block, arranging the steel bar connecting piece with the connecting steel bars at the bottom of a wall body, and fixing the steel bar connecting piece at the center of a rib column; secondly, placing the building blocks, so that a gap between a rib column and a rib beam in the inner forming wall body is formed, placing longitudinal reinforcement steel bars in the gap and binding stirrups, and arranging a plurality of reinforcing stirrups around the bolt sleeve; and after the correctness is confirmed, pouring recycled brick aggregate concrete, vibrating, leveling and plastering, performing standard maintenance after the prefabrication is finished, and removing the formwork after the strength of the concrete reaches 75% of a design value to obtain the prefabricated assembly type composite wall.
And step 3: prefabricated wall panel installation
Firstly, wetting the wall foundation ground, and paving 20mm bottom mortar; then adjusting the prefabricated wall body to position and put in place, extending the connecting steel bars on the lower layer or embedded steel bars in the foundation into steel bar mounting holes of the steel bar connecting pieces, and placing gaskets and high-strength nuts; the circle centers of the connecting steel bars, the steel bar mounting holes, the base plate and the high-strength nut are overlapped, and the high-strength nut is tightened and fixed by spot welding; after the high-strength bolt is fixed, high-strength grouting material is adopted to perform grouting and filling on the steel bar mounting hole and the gap position in the steel box.
According to the assembled wall body connecting structure and the construction method thereof, the reinforcing steel bar connecting piece and the connecting reinforcing steel bars or the embedded reinforcing steel bars are fixedly connected by the bolts, so that the prefabricated wall boards and the floor slabs or the foundations are connected together, the structure is simple, the stress is clear, the construction is simple and convenient, the construction is rapid, the compactness of the abutted seams is good, the reliability is high, and the assembled wall body connecting structure is suitable for popularization and application in low-rise buildings and is beneficial to popularization and application.
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. An assembly type wall body connecting structure is characterized by comprising an upper prefabricated wall body (1), a prefabricated floor slab (2) and a lower prefabricated wall body (3); a plurality of connecting steel bars are vertically pre-embedded in the upper prefabricated wall body (1) or the lower prefabricated wall body (3), a plurality of steel bar connecting pieces are pre-embedded at the bottom end of the upper prefabricated wall body (1) or the lower prefabricated wall body (3), and the steel bar connecting pieces correspond to the connecting steel bars in position one by one; the upper ends of the connecting steel bars are exposed out of the top ends of the upper prefabricated wall body (1) or the lower prefabricated wall body (3), and the lower ends of the connecting steel bars are fixedly connected with the upper ends of the steel bar connecting pieces;
the upper prefabricated wall body (1), the prefabricated floor slab (2) and the lower prefabricated wall body (3) are sequentially connected from top to bottom; the upper ends of the connecting steel bars in the lower prefabricated wall body (3) penetrate through the prefabricated floor slab (2), extend into the steel bar connecting pieces in the upper prefabricated wall body (1), and are fixedly connected through nuts.
2. An assembled wall connecting structure as claimed in claim 1, wherein the reinforcing bar coupler comprises a coupler body and a threaded sleeve; the connecting piece body is pre-embedded at the bottom end of the upper prefabricated wall body (1) or the lower prefabricated wall body (3), and is of a hollow cubic structure;
one side vertical surface of the connecting piece body is set as an opening surface, and the opening surface is flush with the upper prefabricated wall body (1) or the lower prefabricated wall body (3); the threaded sleeve is vertically and fixedly arranged at the center of the outer side of the top surface of the connecting piece body, and the lower ends of the connecting steel bars are inserted into the threaded sleeve and fixedly connected together through threads; the bottom surface of connecting piece body is provided with the reinforcing bar mounting hole, and the upper end of connecting reinforcement extends into the connecting piece body after running through the reinforcing bar mounting hole, adopts nut fixed connection between the upper end of connecting reinforcement and the bottom surface of connecting piece body.
3. An assembly type wall connecting structure as claimed in claim 2, wherein the reinforcing bar installation hole is an elliptical hole; a gasket is arranged between the nut and the connecting piece body.
4. An assembly type wall connection structure according to claim 1, characterized in that the upper prefabricated wall (1) or the lower prefabricated wall (3) is of a composite wall structure; the composite wall structure comprises two side rib columns, a plurality of middle rib columns, a plurality of rib beams, building blocks and a concrete surface layer; the two side rib columns are vertically arranged in parallel, the plurality of middle rib columns are vertically arranged between the two side rib columns at intervals, the plurality of rib beams are horizontally arranged between the side rib columns and the middle rib columns, and the side rib columns, the middle rib columns and the rib beams form a lattice structure; building blocks are filled in the sash structure, and the concrete surface layer is coated on the outer sides of the sash structure and the building blocks; the connecting steel bars vertically penetrate through the side rib columns and the middle rib columns, and the steel bar connecting pieces are embedded at the bottom ends of the side rib columns and the middle rib columns.
5. An assembled wall connecting structure as claimed in claim 4, wherein the side rib columns or the middle rib columns comprise longitudinal bars, stirrups and concrete, the longitudinal bars are vertically arranged around the outer sides of the connecting bars, and the stirrups are vertically arranged on the longitudinal bars at intervals; a plurality of reinforcing stirrups are arranged on the outer side of the steel bar connecting piece; the concrete pouring body is coated on the outer sides of the longitudinal bars, the stirrups and the reinforcing stirrups.
6. An assembly type wall connection structure as claimed in claim 4, wherein the blocks are sand aerated concrete blocks or ash aerated concrete blocks.
7. The assembly type wall body connecting structure is characterized in that when the lower end of the lower prefabricated wall body (3) is connected with the ground, a plurality of embedded steel bars are uniformly arranged in the foundation and correspond to steel bar connecting pieces in the lower prefabricated wall body one to one; the upper ends of the embedded steel bars extend into the steel bar connecting pieces in the lower prefabricated wall body (3) and are fixedly connected through nuts.
8. An assembly type wall connecting structure according to claim 1, wherein the contact surface between the adjacent upper prefabricated wall (1) or lower prefabricated wall (3) is sealed by mortar; the contact surface between the upper prefabricated wall body (1) and the floor slab is sealed by mortar; the contact surface between the lower prefabricated wall (3) and the prefabricated floor slab (2) or the ground is sealed by mortar.
9. An assembly type wall connection structure according to claim 1, wherein the prefabricated floor slab (2) is provided with a steel bar through hole, the connecting steel bar is arranged in the steel bar through hole in a penetrating way, and mortar is poured into the steel bar through hole; the prefabricated floor slab (2) comprises a prefabricated composite bottom plate (201) and a cast-in-place layer (202), wherein the cast-in-place layer (202) is arranged on the upper portion of the prefabricated composite bottom plate (201).
10. A construction method of an assembly type wall body connecting structure is characterized by comprising the following steps:
step 1, processing and manufacturing a steel bar connecting piece according to design requirements, and processing external threads at two ends of a connecting steel bar;
step 2, manufacturing a prefabricated wall and a prefabricated floor slab; wherein, when the prefabricated wall body of preparation, specifically do: binding wall body reinforcing steel bars, vertically arranging connecting reinforcing steel bars in the wall body reinforcing steel bars, fixedly installing reinforcing steel bar connecting pieces at the lower ends of the connecting reinforcing steel bars, and pouring concrete to obtain a prefabricated wall body;
step 3, hoisting the prefabricated wall body to the installation position, enabling the connecting steel bars of the next layer of prefabricated wall body or the embedded steel bars in the foundation to extend into the steel bar connecting pieces of the previous layer of prefabricated wall body in a centering manner, and then fixedly connecting the steel bar connecting pieces with the connecting steel bars or the embedded steel bars in the foundation together by adopting nuts;
and 4, filling mortar in the reinforcing steel bar connecting piece for sealing to obtain the assembled wall structure.
CN202010676117.7A 2020-07-14 2020-07-14 Assembled wall body connecting structure and construction method thereof Pending CN111663681A (en)

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107700676A (en) * 2017-09-20 2018-02-16 中国建筑股份有限公司 A kind of dry method connecting plate type structural system and its construction method
CN113944275A (en) * 2021-12-03 2022-01-18 上海思睿建筑科技有限公司 Hidden line connection exterior wall cladding connection node and construction method thereof
CN114960928A (en) * 2022-07-29 2022-08-30 青岛地质工程勘察院(青岛地质勘察开发局) Assembly structure for assembly type building and assembly method thereof
CN114960928B (en) * 2022-07-29 2024-06-28 青岛地质工程勘察院(青岛地质勘查开发局) Assembling structure for assembled building and assembling method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107700676A (en) * 2017-09-20 2018-02-16 中国建筑股份有限公司 A kind of dry method connecting plate type structural system and its construction method
CN107700676B (en) * 2017-09-20 2023-11-10 中国建筑股份有限公司 Dry-method connection plate type structural system and construction method thereof
CN113944275A (en) * 2021-12-03 2022-01-18 上海思睿建筑科技有限公司 Hidden line connection exterior wall cladding connection node and construction method thereof
CN114960928A (en) * 2022-07-29 2022-08-30 青岛地质工程勘察院(青岛地质勘察开发局) Assembly structure for assembly type building and assembly method thereof
CN114960928B (en) * 2022-07-29 2024-06-28 青岛地质工程勘察院(青岛地质勘查开发局) Assembling structure for assembled building and assembling method thereof

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