CN113863532A - Vertical connecting node of concrete shear wall and manufacturing and mounting method thereof - Google Patents
Vertical connecting node of concrete shear wall and manufacturing and mounting method thereof Download PDFInfo
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- CN113863532A CN113863532A CN202111162613.1A CN202111162613A CN113863532A CN 113863532 A CN113863532 A CN 113863532A CN 202111162613 A CN202111162613 A CN 202111162613A CN 113863532 A CN113863532 A CN 113863532A
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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
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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
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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
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
- E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete
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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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
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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
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- 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
- E04G21/12—Mounting of reinforcing inserts; Prestressing
- E04G21/122—Machines for joining reinforcing bars
- E04G21/123—Wire twisting tools
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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
-
- 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
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/246—Safety or protective measures preventing damage to building parts or finishing work during construction specially adapted for curing concrete in situ, e.g. by covering it with protective sheets
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Rod-Shaped Construction Members (AREA)
- Joining Of Building Structures In Genera (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The utility model discloses a vertical connecting node of a dry-type fully-assembled industrialized concrete shear wall, which comprises an upper prefabricated concrete shear wall body, a lower prefabricated concrete shear wall body and a steel pipe concrete combined connecting piece; the upper precast concrete shear wall body and the lower precast concrete shear wall body are both formed by a steel reinforcement framework and poured concrete; the utility model also discloses a manufacturing and installing method of the vertical connecting node of the dry-type fully-assembled industrialized concrete shear wall.
Description
Technical Field
The utility model belongs to the field of industrialized building structures, and particularly relates to a vertical connecting node of a dry-type fully-assembled industrialized concrete shear wall and a manufacturing and installing method thereof.
Background
The building industrialization is an effective solution to the problems of labor shortage, poor working environment, low production efficiency, high unit energy consumption and the like in the building industry. The assembled reinforced concrete structure is one of important ways for realizing building industrialization, has the remarkable advantages of controllable quality, environmental protection, high assembly rate, convenient construction and the like, is immature in development at present, and needs theoretical practice innovation urgently. The vertical connecting node of the fabricated concrete shear wall is a critical part in the structure and is also a weak link, and the safety, usability and durability of the structure are obviously affected. Compared with a wet connection scheme requiring secondary concrete pouring, the vertical connection scheme of the dry-type fully-assembled shear wall is more in accordance with the industrial essence of buildings and has the advantages of higher prefabrication rate and assembly efficiency. The vertical connection scheme of the dry-type fully-assembled shear wall is an important direction for the industrial development of buildings, and has a good development prospect.
At present, the vertical connection scheme of the dry-type fully-assembled concrete shear wall mainly comprises three forms of grouting sleeve connection, welding connection and bolt connection. The grouting sleeve connection is a hidden type steel bar connection method, so that the phenomenon of non-compact pouring is easy to occur, an effective detection means is lacked, and potential safety hazards can be left for the shear wall. The welding connection method requires specialized construction teams, has high requirements on the skills of workers, and has the defects that the welding quality is difficult to ensure and the cold brittleness problem is easy to occur due to poor welding conditions of field welding, so that the anti-seismic performance of the structure is influenced. Relatively speaking, the bolt connection is convenient to install, mature in technology and high in reliability, the main problems are that the requirement on manufacturing precision is high, meanwhile, the existing bolt connection is complex in structure, large in steel consumption, weakened in performance and high in sensitivity to the section form, and development and innovation are urgently needed.
In the prior art that has been disclosed so far, an assembled shear wall node connection structure is disclosed. The problem of the assembly of current shear force wall easily leads to shear force wall to have the potential safety hazard is solved to the purpose. The utility model discloses an assembly type shear wall node connecting structure, which comprises: the utility model further comprises a hidden beam formed by bundling stirrups and transverse steel bars and used for improving the integrity and the safety of the joint, wherein the middle connecting piece can be externally connected with a floor slab or other external structures, and the connection of the shear wall, the floor slab and other external structures can be realized through the joint connecting structure. However, the shear wall node connection structure has the following disadvantages: 1. the secondary pouring of concrete at the node is a typical cast-in-place integral type and needs to carry out wet operation on site; 2. the node not only needs to fasten the bolt but also binds the steel bar-shaped hidden beam, the process is complex and the steel bars are dense; 3. the longitudinal steel bars of the shear wall are not fully connected with the T-shaped plates, the force transmission path is not direct, and the mechanical property is influenced.
In the prior art that has been disclosed so far, a dry-type connected fabricated RC shear wall structure includes an upper connecting steel plate, an upper RC shear wall, a lower connecting steel plate matching with the upper connecting steel plate, a lower RC shear wall, and high-strength bolts and screws for fixedly connecting the upper connecting steel plate and the lower connecting steel plate, the upper connecting steel plate and the lower connecting steel plate are respectively provided with a pouring end connected with the upper RC shear wall and the lower RC shear wall and a connecting end for fixing the upper connecting steel plate and the lower connecting steel plate, shear bonds are welded in the pouring ends of the upper connecting steel plate and the lower connecting steel plate, after the upper connecting steel plate and the lower connecting steel plate are respectively welded with the end parts of the distributed steel bars in the upper RC shear wall and the lower RC shear wall, the upper connecting steel plate and the upper RC shear wall are respectively poured into a whole by adopting concrete, the lower connecting steel plate and the lower RC shear wall are respectively formed into a whole, and the upper connecting steel plate and the lower connecting steel plate are fixed into a whole by adopting high-strength bolts and screws. The utility model has the advantages of simple structure, quick and convenient construction, cost saving, larger shearing-resistant bearing capacity, deformation capability and earthquake-resistant performance, small dead weight, high construction speed, high installation precision and wide engineering application prospect. However, this fabricated RC shear wall structure has the following disadvantages: 1. the cross section and the lap joint mode of the vertical connecting steel plate lead to the increase of the whole steel consumption and influence on the economy; 2. the vertical steel plates are lapped, and the hollow node is easy to bend under vertical pressure, so that the compressive bearing capacity of the node is influenced; 3. the structural form of the node has high requirements on the precision of manufacturing and installation, and influences the manufacturing yield and the installation efficiency.
Disclosure of Invention
The utility model aims to provide a vertical connecting node of a dry-type fully-assembled industrialized concrete shear wall and a manufacturing and installing method thereof, so as to solve the defects or problems in the background technology.
In order to achieve the purpose, the embodiment of the utility model provides a vertical connecting node of a dry-type fully-assembled industrialized concrete shear wall, which is characterized by comprising an upper prefabricated concrete shear wall body, a lower prefabricated concrete shear wall body and a steel pipe concrete combined connecting piece;
the upper precast concrete shear wall body and the lower precast concrete shear wall body are both formed by a steel reinforcement framework and poured concrete;
the steel pipe concrete combined connecting piece is composed of a plurality of basic independent connecting units, each basic independent connecting unit comprises an upper connecting unit, a lower connecting unit and a high-strength bolt connecting pair for connecting the upper connecting unit and the lower connecting unit, and the upper connecting unit comprises an upper connecting end plate and an upper steel pipe concrete section fixed on the upper connecting end plate; the lower connecting unit comprises a lower connecting end plate and a lower concrete-filled steel tube section fixed below the lower connecting end plate; the high-strength bolt connecting pair is used for fixedly connecting an upper connecting end plate and a lower connecting end plate, and a plurality of basic independent connecting units form an integral connecting section;
the steel reinforcement framework of the upper precast concrete shear wall body and the steel reinforcement framework of the lower precast concrete shear wall body are fixedly connected with the upper concrete filled steel tube section and the lower concrete filled steel tube section respectively.
Furthermore, the steel bar framework of the upper precast concrete shear wall body comprises a plurality of upper shear wall longitudinal steel bars and a plurality of upper shear wall transverse steel bars; the steel reinforcement framework of the lower precast concrete shear wall body comprises a plurality of lower shear wall longitudinal steel reinforcements and a plurality of lower shear wall transverse steel reinforcements.
Preferably, the longitudinal steel bars of the upper shear wall are welded and fixed on the outer side wall of the upper concrete-filled steel tube section; and the lower shear wall longitudinal steel bars are welded and fixed on the outer side wall of the lower concrete-filled steel tube section.
Further, the upper concrete-filled steel tube section or the lower concrete-filled steel tube section comprises a cylindrical steel tube with a circular cross section and concrete poured in the cylindrical steel tube; bolt holes are reserved in the upper connecting end plate and the lower connecting end plate.
Furthermore, the upper shear wall longitudinal steel bars and the lower shear wall longitudinal steel bars are welded on the outer sides of the upper concrete filled steel tube section and the lower concrete filled steel tube section on the two sides.
Furthermore, the relative position of the longitudinal steel bar of the upper shear wall and the side wall of the columnar steel pipe or the relative position of the longitudinal steel bar of the lower shear wall and the side wall of the columnar steel pipe can be adjusted by adding a welding backing plate on the upper connecting end plate or the lower connecting end plate.
Preferably, a plurality of stiffening ribs are uniformly arranged between the outer side of the columnar steel pipe of the upper concrete-filled steel pipe section and the outer side of the columnar steel pipe of the lower concrete-filled steel pipe section and the upper connecting end plate or the lower connecting end plate respectively.
Further, the height from the bottom of the upper precast concrete shear wall to the upper connecting end plate is greater than or equal to the length of the high-strength bolt; the height from the bottom of the lower precast concrete shear wall to the lower connecting end plate is greater than or equal to the length of the high-strength bolt.
The embodiment of the utility model also provides a manufacturing and installing method of the vertical connecting node of the dry-type fully-assembled industrialized concrete shear wall, which is characterized by comprising the following steps:
s1: optimally dividing the shear wall into one or more basic independent connection units according to the section form and size of the shear wall connection node;
s2: after selecting the specification of the columnar steel pipe according to the design requirement, cutting the designed length to be used as the outer steel wall of the upper concrete-filled steel pipe section or the lower concrete-filled steel pipe section;
s3: cutting the steel plate to form an upper connecting end plate and a lower connecting end plate of the basic independent connecting unit;
s4: according to the designed specification and arrangement of the high-strength bolts, bolt holes are formed in the upper connecting end plate and the lower connecting end plate prepared in the step S3;
s5: fixing the bottom of the cylindrical steel pipe cut in the step S2 to an upper connecting end plate or a lower connecting end plate by welding, and welding a plurality of stiffening ribs between the side wall of the cylindrical steel pipe and the upper connecting end plate or the lower connecting end plate;
s6: splicing an upper connecting end plate and a lower connecting end plate of the basic independent connecting unit according to the section form of the connecting node of the shear wall, and then fixing by adopting electric welding;
s7: placing the columnar steel pipe with the welded upper connecting end plate and lower connecting end plate upwards according to the opening of the columnar steel pipe, and pouring common or high-performance concrete inside the columnar steel pipe; forming an upper connection unit and a lower connection unit;
s8: according to the required number and position of the shear wall longitudinal bars, directly or indirectly (adjusting a base plate) welding the upper shear wall longitudinal bars and the lower shear wall longitudinal bars on the outer side of the columnar steel pipe;
s9: binding a steel bar framework of the upper precast concrete shear wall body or the lower precast concrete shear wall body, wherein the steel bar framework comprises all longitudinal bars, distribution bars, stirrups and tie bars;
s10: horizontally placing a steel bar framework, an upper connecting unit and a lower connecting unit of the upper precast concrete shear wall body or the lower precast concrete shear wall body in a special template brushed with a release agent;
s11: pouring an upper connecting unit of the prefabricated upper precast concrete shear wall body and the steel pipe concrete combined connecting piece to form an upper prefabricated shear wall, and a lower connecting unit of the prefabricated lower concrete shear wall body and the steel pipe concrete combined connecting piece to form a lower prefabricated shear wall, and pouring the non-rectangular section shear wall in different areas step by step;
s12: steam pressure curing is carried out in special curing equipment, and demolding can be carried out after curing reaches the designed strength of the concrete;
s13: performing anticorrosion and fireproof treatment on the steel exposed parts of the upper prefabricated shear wall and the lower prefabricated shear wall prefabricated in the step S11;
s14: after the upper prefabricated shear wall and the lower prefabricated shear wall prefabricated in the step S13 are qualified in factory acceptance, transporting the upper prefabricated shear wall and the lower prefabricated shear wall to a construction site from a manufacturing factory;
s15: and (5) hoisting the upper prefabricated shear wall and the lower prefabricated shear wall prefabricated in the step (S13) to preset positions, aligning bolt holes of the upper connection end plate and the lower connection end plate of the upper prefabricated shear wall and the lower prefabricated shear wall, and fixing by using a high-strength bolt connection pair.
Furthermore, if the shear wall connecting nodes are arranged among floors, anticorrosive materials are adopted to fill the indented parts of the sections so as to achieve the purpose of leveling the wall surface; if the shear force wall node sets up when the floor position, usable steel core concrete clearance ligature floor reinforcing bar.
The technical scheme of the utility model has the following beneficial effects:
(1) the vertical connection node of the dry-type fully-assembled concrete shear wall is connected by adopting the high-strength bolt connection pair, accords with the industrialized development trend of buildings, creatively introduces the concrete-filled steel tube technology and the unitized assembly mode into the vertical connection of the shear wall, effectively simplifies the structural composition form, increases the mechanical property of the node, strengthens the standardized manufacture, can flexibly match different wall section forms and is convenient to be connected with surrounding floor slabs.
(2) The vertical connecting node of the dry-type fully-assembled industrialized concrete shear wall meets the industrialized development trend of buildings, and has the characteristics of simple structure, regular components, clear stress, flexible design, reliable performance, easy maintenance and disassembly.
(3) According to the dry-type fully-assembled industrialized concrete shear wall, the welding of the steel materials, the pouring of the concrete and the maintenance of the concrete in the vertical connecting nodes are all completed in a factory, no construction is carried out on the installation site, and only fastening bolts are needed, so that the quality is controllable, the construction efficiency is high, the construction period is effectively shortened, and the construction cost is reduced.
(4) The vertical connecting node of the dry-type fully-assembled industrialized concrete shear wall adopts the concrete-filled steel tube connecting unit to vertically connect the shear wall, and has the advantages of flexible design, good mechanical property and strong section adaptability.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of a dry-type fully-assembled industrial concrete shear wall node according to the present invention;
FIG. 2 is a perspective view of a concrete filled steel tube composite connector in an embodiment of a shear wall node according to the present invention;
FIG. 3 is a schematic perspective view of an internal structure of an upper prefabricated shear wall formed by an upper prefabricated concrete shear wall and an upper connecting unit of a concrete filled steel tube composite connecting member in an embodiment of the upper shear wall according to the utility model;
FIG. 4 is a schematic perspective view of an upper connection unit connected to upper shear wall longitudinal reinforcing bars in an embodiment of a shear wall node of the present invention;
fig. 5 is an implementation process diagram of the manufacturing and installation method of the vertical connection node of the shear wall.
Description of reference numerals: 1. prefabricating a concrete shear wall on the upper part; 2. prefabricating a concrete shear wall at the lower part; 3. a steel pipe concrete combined connecting piece; 4. an upper concrete filled steel tube section; 5. a lower concrete filled steel tube section; 6. the upper part is connected with an end plate; 7. the lower part is connected with an end plate; 8. A high-strength bolt connection pair; 9. longitudinal steel bars of the upper shear wall; 10. transverse steel bars of the upper shear wall; 11. bolt holes; 12. concrete; 13. a stiffening rib.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in FIG. 1, the vertical splicing node structure of the dry-type fully-assembled industrialized concrete shear wall comprises an upper prefabricated concrete shear wall body 1, a lower prefabricated concrete shear wall body 2 and a steel tube concrete combined connecting piece 3.
As shown in fig. 2, the steel pipe concrete composite connecting member 3 is composed of a plurality of substantially independent connecting units, each of which includes an upper connecting unit, a lower connecting unit, and a high-strength bolt connecting pair 8 for connecting the upper connecting unit and the lower connecting unit, wherein the upper connecting unit includes an upper connecting end plate 6 and an upper steel pipe concrete segment 4 fixed on the upper connecting end plate 6; the lower connecting unit comprises a lower connecting end plate 7 and a lower concrete-filled steel tube section 5 fixed below the lower connecting end plate 7; the high-strength bolt connecting pair 8 is used for fixedly connecting the upper connecting end plate 6 and the lower connecting end plate 7, and a plurality of basic independent connecting units form an integral connecting section. And the high-strength bolt connecting pair 8 passes through the upper connecting end part 6 and the lower connecting end plate 7 to fix the upper precast concrete shear wall body 1 and the lower precast concrete shear wall body 2.
As a further embodiment of the present invention, the upper concrete-filled steel tube section 4 or the lower concrete-filled steel tube section 5 includes a cylindrical steel tube with a circular cross section and concrete poured into the cylindrical steel tube; bolt holes 11 are reserved in the upper connecting end plate 6 and the lower connecting end plate 7. Preferably, the steel pipe of the upper concrete-filled steel pipe section 4 or the lower concrete-filled steel pipe section 5 adopts a circular cross section, so that the constraint effect of the outer steel pipe on the inner concrete can be better exerted, and the compression resistance of the concrete is improved. When the high-performance concrete is poured into the columnar steel pipe of the upper concrete-filled steel pipe section 4 or the lower concrete-filled steel pipe section 5, the comprehensive mechanical property of the vertical node of the shear wall is improved. The concrete 12 poured inside the columnar steel tube can inhibit the buckling of the steel tube and is laterally restrained by the columnar steel tube, so that the performance of the steel tube and the concrete is fully exerted, meanwhile, the array type steel tube concrete effectively forms each stress fiber of the vertical node of the shear wall, the mechanical property of the shear wall node is greatly improved, and the purpose that the bearing capacity is not reduced when the connecting section is reduced is achieved. Therefore, according to the basic theory of the steel structure and the concrete-filled steel tube principle, the design parameters of the joints such as the specification of the steel tube, the concrete index, the thickness of the connecting end plate and the like can be calculated and determined. Under certain conditions, high-strength concrete materials can be preferably selected, and stiffening ribs 13 between the columnar steel pipes and the upper connecting end plate 6 or the lower connecting end plate 7 can be added, so that the mechanical property of the shear wall connecting node is further improved. In addition, as an alternative embodiment of the present invention, the substantially independent connection unit in which the bottom of the columnar steel pipe is welded to the upper connection end plate 6 or the lower connection end plate 7 may be replaced with a one-step formed steel casting, and the influence of high temperature and cold brittleness caused by welding may be minimized.
Preferably, the reserved bolt holes 11 of the upper connecting end plate 6 or the lower connecting end plate 7 should be arranged on the periphery of the upper concrete-filled steel tube section 4 or the lower concrete-filled steel tube section 5, and the requirements of end distance from the edge of the steel plate and the distance between bolts should be met, and meanwhile, the operation space required by screwing the high-strength bolts should be considered. The outer contours of the upper connecting end plate 6 and the lower connecting end plate 7 should not exceed the outer contour of the upper precast concrete shear wall 1 or the lower precast concrete shear wall 2, so that the flatness of the wall surface and the regularity of the section are achieved after the shear wall joint is filled with the anticorrosive material.
As a further embodiment of the utility model, the relative position of the longitudinal steel bar 9 of the upper shear wall and the side wall of the columnar steel pipe or the relative position of the longitudinal steel bar of the lower shear wall and the side wall of the columnar steel pipe can be adjusted by adding a welding backing plate on the upper connecting end plate 6 or the lower connecting end plate 7. Preferably, a plurality of stiffening ribs 13 are uniformly arranged between the outer side of the columnar steel tube of the upper concrete-filled steel tube section 4, the outer side of the columnar steel tube of the lower concrete-filled steel tube section 5 and the upper connecting end plate or the lower connecting end plate respectively. Under the condition of large bending tensile stress, a stiffening rib 13 is welded between the columnar steel pipe and the upper or lower connecting end plate 7 for improving the combined action of the steel pipe and the end plate and improving the tensile capacity of the node.
As shown in fig. 3 and 4, the upper precast concrete shear wall 1 and the lower precast concrete shear wall 2 are both formed by a steel reinforcement framework and poured concrete; the structures of the upper precast concrete shear wall body 11 and the lower precast concrete shear wall body 2 both meet the basic requirements of a precast reinforced concrete shear wall, and are mainly composed of concrete and steel bars. Preferably, the steel reinforcement framework of the upper precast concrete shear wall body 1 comprises a plurality of upper shear wall longitudinal steel reinforcements 9 and a plurality of upper shear wall transverse steel reinforcements 10; the steel reinforcement framework of the lower precast concrete shear wall body 2 comprises a plurality of lower shear wall longitudinal steel reinforcements and a plurality of lower shear wall transverse steel reinforcements.
The steel bar framework of the upper precast concrete shear wall body 1 and the steel bar framework of the lower precast concrete shear wall body 2 are fixedly connected with the upper concrete filled steel tube section 4 and the lower concrete filled steel tube section 5 respectively. Specifically, the longitudinal steel bars 9 of the upper shear wall are welded and fixed on the outer side wall of the upper concrete-filled steel tube section 4; and the lower shear wall longitudinal steel bars are welded and fixed on the outer side wall of the lower concrete-filled steel tube section 5. The outer side wall of a columnar steel pipe which is fixedly welded on the upper concrete-filled steel pipe section 4 or the lower concrete-filled steel pipe section 5 is the simplest and most direct force transmission design scheme, the length of a welding seam is calculated and determined by using a steel bar double-sided welding principle, and compared with single-sided welding, the length of the welding seam can be effectively reduced, the using amount of the steel pipe can be reduced, and the total cost of the node can be reduced.
Preferably, the upper shear wall longitudinal steel bars 9 and the lower shear wall longitudinal steel bars are welded on the outer sides of the upper concrete-filled steel tube section 4 and the lower concrete-filled steel tube section 5 on the two sides. The lap length of the steel bar and the steel pipe can be reduced, the embedding length of the steel pipe can be further reduced, and the steel consumption is reduced.
As a further embodiment of the utility model, the height from the bottom of the upper precast concrete shear wall 1 to the upper connection end plate 6 is greater than or equal to the length of the high-strength bolt; the height from the bottom of the lower precast concrete shear wall body 2 to the lower connecting end plate 7 is greater than or equal to the length of the high-strength bolt. The distance from the bottom of the upper precast concrete shear wall body 1 or the lower precast concrete shear wall body 2 to the upper connecting end plate 6 or the lower connecting end plate 7 is not less than the length of the high-strength bolt, so that the installation and screwing space of the high-strength bolt is ensured.
In a preferred embodiment, the upper concrete filled steel tube section 4 should extend into the upper precast concrete shear wall body to a depth which is at least equal to the length of the welding seam between the upper shear wall longitudinal steel bars 9 and the upper concrete filled steel tube section 4 plus the thickness of a steel bar protection layer. When the node is located the floor, the reinforcing bar can pass the space between each steel pipe concrete section more easily, very easily arranges the floor reinforcing bar.
The combined steel pipe concrete array according to the cross section shape is applied to vertical connection of the concrete shear wall, and is the core innovation of the utility model of the vertical connection node of the self-drying type fully-assembled industrialized concrete shear wall.
The embodiment of the utility model also provides a manufacturing and installing method of the vertical connecting node of the dry-type fully-assembled industrialized concrete shear wall, as shown in fig. 5, the method comprises the following steps:
s1: optimally dividing the shear wall into one or more basic independent connection units according to the section form and size of the shear wall connection node;
s2: after selecting the specification of the columnar steel pipe according to the design requirement, cutting the designed length to be used as the outer steel wall of the upper concrete-filled steel pipe section 4 or the lower concrete-filled steel pipe section 5;
s3: cutting the steel plate to form an upper connecting end plate 6 and a lower connecting end plate 7 of a basic independent connecting unit;
s4: according to the designed specification and arrangement of the high-strength bolts, bolt holes 11 are formed in the upper connecting end plate 6 and the lower connecting end plate 7 prepared in the step S3;
s5: fixing the bottom of the cylindrical steel pipe cut in the step S2 to the upper connection end plate 6 or the lower connection end plate 7 by welding, and welding a plurality of stiffening ribs 13 between the side wall of the cylindrical steel pipe and the upper connection end plate 6 or the lower connection end plate 7;
s6: splicing an upper connecting end plate 6 and a lower connecting end plate 7 of the basic independent connecting unit according to the section form of the connecting node of the shear wall, and then fixing by adopting electric welding;
s7: placing the columnar steel pipe welded with the upper connecting end plate 6 and the lower connecting end plate 7 upwards according to the opening of the columnar steel pipe, and pouring common or high-performance concrete 12 inside; forming an upper connection unit and a lower connection unit;
s8: according to the required number and position of the longitudinal bars of the shear wall, directly or indirectly (adjusting a base plate) welding the longitudinal bars 9 of the upper shear wall and the longitudinal bars of the lower shear wall to the outer side of the columnar steel pipe;
s9: binding a steel bar framework of the upper precast concrete shear wall body 1 or the lower precast concrete shear wall body 2, wherein the steel bar framework comprises all longitudinal bars, distribution bars, stirrups and tie bars;
s10: horizontally placing a steel bar framework, an upper connecting unit and a lower connecting unit of the upper precast concrete shear wall body 1 or the lower precast concrete shear wall body 2 in a special template brushed with a release agent;
s11: pouring an upper prefabricated concrete shear wall body 1 and an upper connecting unit of the steel pipe concrete combined connecting piece 3 to form an upper prefabricated shear wall, pouring a lower prefabricated concrete shear wall body 2 and a lower connecting unit of the steel pipe concrete combined connecting piece 3 to form a lower prefabricated shear wall, and pouring the non-rectangular section shear wall in a regional and step-by-step manner;
s12: steam pressure curing is carried out in special curing equipment, and demolding can be carried out after curing reaches the designed strength of the concrete;
s13: performing anticorrosion and fireproof treatment on the steel exposed parts of the upper prefabricated shear wall and the lower prefabricated shear wall prefabricated in the step S11;
s14: after the upper prefabricated shear wall and the lower prefabricated shear wall prefabricated in the step S13 are qualified in factory acceptance, transporting the upper prefabricated shear wall and the lower prefabricated shear wall to a construction site from a manufacturing factory;
s15: and (5) hoisting the upper prefabricated shear wall and the lower prefabricated shear wall prefabricated in the step (S13) to preset positions, aligning bolt holes 11 of the upper connecting end plate 6 and the lower connecting end plate 7 of the upper prefabricated shear wall and the lower prefabricated shear wall, and fixing by using a high-strength bolt connecting pair 8.
S16: if the shear wall connecting nodes are arranged among floors, anticorrosive materials are adopted to fill the indented parts of the sections so as to achieve the purpose of leveling the wall surface; if the shear force wall node sets up when the floor position, usable steel core concrete clearance ligature floor reinforcing bar.
The structures, proportions, sizes, and the like of the embodiments of the present invention have been described in a manner consistent with the description thereof, which will be read and understood by those skilled in the relevant art, and are not intended to limit or restrict the scope of the utility model in which the structure of the present invention may be practiced. Any modification and decoration without affecting the efficacy of the present invention shall fall within the scope of the present invention. The words used in this specification have been included for clarity and conciseness of description, and insubstantial technical variations are considered to be within the scope of what the utility model can be practiced.
Claims (10)
1. A vertical connecting node of a dry-type fully-assembled industrialized concrete shear wall is characterized by comprising an upper prefabricated concrete shear wall body, a lower prefabricated concrete shear wall body and a steel pipe concrete combined connecting piece;
the upper precast concrete shear wall body and the lower precast concrete shear wall body are both formed by a steel reinforcement framework and poured concrete;
the steel pipe concrete combined connecting piece is composed of a plurality of basic independent connecting units, each basic independent connecting unit comprises an upper connecting unit, a lower connecting unit and a high-strength bolt connecting pair for connecting the upper connecting unit and the lower connecting unit, and the upper connecting unit comprises an upper connecting end plate and an upper steel pipe concrete section fixed on the upper connecting end plate; the lower connecting unit comprises a lower connecting end plate and a lower concrete-filled steel tube section fixed below the lower connecting end plate; the high-strength bolt connecting pair is used for fixedly connecting an upper connecting end plate and a lower connecting end plate, and a plurality of basic independent connecting units form an integral connecting section;
the steel reinforcement framework of the upper precast concrete shear wall body and the steel reinforcement framework of the lower precast concrete shear wall body are fixedly connected with the upper concrete filled steel tube section and the lower concrete filled steel tube section respectively.
2. The vertical connection node of the dry-type fully-assembled industrial concrete shear wall according to claim 1, wherein the reinforcement cage of the upper precast concrete shear wall body comprises a plurality of upper shear wall longitudinal reinforcements and a plurality of upper shear wall transverse reinforcements; the steel reinforcement framework of the lower precast concrete shear wall body comprises a plurality of lower shear wall longitudinal steel reinforcements and a plurality of lower shear wall transverse steel reinforcements.
3. The vertical connecting node of the dry-type fully-assembled industrial concrete shear wall according to claim 2, wherein the upper shear wall longitudinal steel bars are welded and fixed on the outer side wall of the upper concrete-filled steel tube section; and the lower shear wall longitudinal steel bars are welded and fixed on the outer side wall of the lower concrete-filled steel tube section.
4. The vertical connection node of the dry-type fully-assembled industrial concrete shear wall according to claim 1, wherein each of the upper concrete-filled steel tube section and the lower concrete-filled steel tube section comprises a cylindrical steel tube with a circular cross section and concrete poured in the cylindrical steel tube; bolt holes are reserved in the upper connecting end plate and the lower connecting end plate.
5. The vertical connection node of the dry-type fully-assembled industrial concrete shear wall according to claim 1, wherein the upper shear wall longitudinal steel bars and the lower shear wall longitudinal steel bars are welded on the outer sides of the upper concrete-filled steel tube section and the lower concrete-filled steel tube section in a double-sided manner.
6. The vertical connection node of the dry-type fully-assembled industrial concrete shear wall according to claim 1, wherein the upper connection end plate or the lower connection end plate can adjust the relative position of the longitudinal steel bars of the upper shear wall and the side wall of the columnar steel tube or the relative position of the longitudinal steel bars of the lower shear wall and the side wall of the columnar steel tube by adding a welding backing plate.
7. The vertical connection node of the dry-type fully-assembled industrial concrete shear wall according to claim 4, wherein a plurality of stiffening ribs are uniformly arranged between the outer side of the cylindrical steel tube of the upper concrete-filled tube section, the outer side of the cylindrical steel tube of the lower concrete-filled tube section and the upper connection end plate or the lower connection end plate respectively.
8. The vertical connecting node of the dry-type fully-assembled industrial concrete shear wall according to claim 1, wherein the height from the bottom of the upper precast concrete shear wall to the upper connecting end plate is greater than or equal to the length of a high-strength bolt; the height from the bottom of the lower precast concrete shear wall to the lower connecting end plate is greater than or equal to the length of the high-strength bolt.
9. The manufacturing and installation method of the vertical connecting node of the dry-type fully-assembled industrial concrete shear wall according to claim 1 is characterized by comprising the following steps:
s1: optimally dividing the shear wall into one or more basic independent connection units according to the section form and size of the shear wall connection node;
s2: after selecting the specification of the columnar steel pipe according to the design requirement, cutting the designed length to be used as the outer steel wall of the upper concrete-filled steel pipe section or the lower concrete-filled steel pipe section;
s3: cutting the steel plate to form an upper connecting end plate and a lower connecting end plate of the basic independent connecting unit;
s4: according to the designed specification and arrangement of the high-strength bolts, bolt holes are formed in the upper connecting end plate and the lower connecting end plate prepared in the step S3;
s5: fixing the bottom of the cylindrical steel pipe cut in the step S2 to an upper connecting end plate or a lower connecting end plate by welding, and welding a plurality of stiffening ribs between the side wall of the cylindrical steel pipe and the upper connecting end plate or the lower connecting end plate;
s6: splicing an upper connecting end plate and a lower connecting end plate of the basic independent connecting unit according to the section form of the connecting node of the shear wall, and then fixing by adopting electric welding;
s7: placing the columnar steel pipe with the welded upper connecting end plate and lower connecting end plate upwards according to the opening of the columnar steel pipe, and pouring common or high-performance concrete inside the columnar steel pipe; forming an upper connection unit and a lower connection unit;
s8: according to the required number and position of the shear wall longitudinal bars, directly or indirectly (adjusting a base plate) welding the upper shear wall longitudinal bars and the lower shear wall longitudinal bars on the outer side of the columnar steel pipe;
s9: binding a steel bar framework of the upper precast concrete shear wall body or the lower precast concrete shear wall body, wherein the steel bar framework comprises all longitudinal bars, distribution bars, stirrups and tie bars;
s10: horizontally placing a steel bar framework, an upper connecting unit and a lower connecting unit of the upper precast concrete shear wall body or the lower precast concrete shear wall body in a special template brushed with a release agent;
s11: pouring an upper connecting unit of the prefabricated upper precast concrete shear wall body and the steel pipe concrete combined connecting piece to form an upper prefabricated shear wall, and a lower connecting unit of the prefabricated lower concrete shear wall body and the steel pipe concrete combined connecting piece to form a lower prefabricated shear wall, and pouring the non-rectangular section shear wall in different areas step by step;
s12: steam pressure curing is carried out in special curing equipment, and demolding can be carried out after curing reaches the designed strength of the concrete;
s13: performing anticorrosion and fireproof treatment on the steel exposed parts of the upper prefabricated shear wall and the lower prefabricated shear wall prefabricated in the step S11;
s14: after the upper prefabricated shear wall and the lower prefabricated shear wall prefabricated in the step S13 are qualified in factory acceptance, transporting the upper prefabricated shear wall and the lower prefabricated shear wall to a construction site from a manufacturing factory;
s15: and (5) hoisting the upper prefabricated shear wall and the lower prefabricated shear wall prefabricated in the step (S13) to preset positions, aligning bolt holes of the upper connection end plate and the lower connection end plate of the upper prefabricated shear wall and the lower prefabricated shear wall, and fixing by using a high-strength bolt connection pair.
10. The manufacturing and installation method of the vertical connecting node of the dry-type fully-assembled industrialized concrete shear wall as claimed in claim 9, wherein if the connecting node of the shear wall is arranged between floors, the section indentation is filled with an anticorrosive material to achieve leveling of the wall surface; if the shear force wall node sets up when the floor position, usable steel core concrete clearance ligature floor reinforcing bar.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111162613.1A CN113863532B (en) | 2021-09-30 | 2021-09-30 | Vertical connecting node of concrete shear wall and manufacturing and mounting method thereof |
| PCT/CN2022/133044 WO2023051842A1 (en) | 2021-09-30 | 2022-11-20 | Concrete shear wall vertical connection joint and manufacturing and installation method therefor |
| ZA2023/04911A ZA202304911B (en) | 2021-09-30 | 2023-05-02 | Concrete shear wall vertical connection joint and manufacturing and installation method therefor |
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| CN202111162613.1A CN113863532B (en) | 2021-09-30 | 2021-09-30 | Vertical connecting node of concrete shear wall and manufacturing and mounting method thereof |
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| CN113863532A true CN113863532A (en) | 2021-12-31 |
| CN113863532B CN113863532B (en) | 2022-09-27 |
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| CN (1) | CN113863532B (en) |
| WO (1) | WO2023051842A1 (en) |
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Cited By (2)
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|---|---|---|---|---|
| WO2023051842A1 (en) * | 2021-09-30 | 2023-04-06 | 南通职业大学 | Concrete shear wall vertical connection joint and manufacturing and installation method therefor |
| CN116517143A (en) * | 2023-06-25 | 2023-08-01 | 中冶建筑研究总院有限公司 | Shear wall with steel-concrete combined structure and connecting method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117386056A (en) * | 2023-09-12 | 2024-01-12 | 中国建筑东北设计研究院有限公司 | Assembled full prefabricated floor and prefabricated shear wall connected node |
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Also Published As
| Publication number | Publication date |
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| WO2023051842A1 (en) | 2023-04-06 |
| CN113863532B (en) | 2022-09-27 |
| ZA202304911B (en) | 2024-01-31 |
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