CN109680835B - Self-supporting precast concrete wallboard, concrete wall, structural system and construction method - Google Patents
Self-supporting precast concrete wallboard, concrete wall, structural system and construction method Download PDFInfo
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- CN109680835B CN109680835B CN201910119936.9A CN201910119936A CN109680835B CN 109680835 B CN109680835 B CN 109680835B CN 201910119936 A CN201910119936 A CN 201910119936A CN 109680835 B CN109680835 B CN 109680835B
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- 239000004567 concrete Substances 0.000 title claims abstract description 76
- 238000010276 construction Methods 0.000 title claims abstract description 52
- 239000011178 precast concrete Substances 0.000 title claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 147
- 239000010959 steel Substances 0.000 claims abstract description 147
- 238000010008 shearing Methods 0.000 claims abstract description 92
- 238000011065 in-situ storage Methods 0.000 claims abstract description 66
- 239000000463 material Substances 0.000 claims abstract description 48
- 230000002787 reinforcement Effects 0.000 claims description 14
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 11
- 210000000988 bone and bone Anatomy 0.000 claims description 11
- 238000004873 anchoring Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 210000001503 joint Anatomy 0.000 claims description 6
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 3
- 238000003466 welding Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009439 industrial construction Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
- E04B2/64—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
- E04B2/58—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal
- E04B2/60—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal characterised by special cross-section of the elongated members
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
- E04B2/64—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete
- E04B2/68—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete made by filling-up wall cavities
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Load-Bearing And Curtain Walls (AREA)
Abstract
A self-supporting precast concrete wallboard, a concrete wall, a structural system and a construction method are provided, wherein the wallboard is divided into a precast part and a horizontal connecting end cast-in-situ part, the vertical connecting end of the precast part is provided with a vertical connecting piece, the vertical connecting piece comprises precast part vertical steel bars and at least one vertical shearing connecting piece, horizontal connecting pieces are arranged on two horizontal sides of the precast part, each horizontal connecting piece comprises precast part horizontal steel bars and/or at least one horizontal shearing connecting piece, and the horizontal connecting end cast-in-situ part comprises cast-in-situ part vertical steel bars, cast-in-situ part horizontal steel bars and cast-in-situ part post-pouring materials. The invention has the combined advantages of the precast concrete shearing-resistant connecting piece and the precast concrete structure, so that the house is not easy to collapse in an earthquake, the precast concrete shearing-resistant connecting piece can increase the out-of-plane rigidity of the precast member, the member can bear self-load during construction, and the on-site construction quality and on-site control are convenient to promote. The welding connection quality between the prefabricated components is easy to control and ensure, and the construction speed is high.
Description
Technical Field
The invention belongs to the field of prefabricated components, and in particular relates to a self-supporting prefabricated concrete wallboard, a structural system and a manufacturing method thereof.
Background
Building industrialization is the key point of construction and development in recent years, and comprises the steps of greatly promoting the assembly type building, encouraging the assembly type construction of building enterprises, constructing a national-level assembly type building production base, improving the proportion of the assembly type building to a newly built building and the like. In the reinforced precast reinforced concrete shear wall and the structural system in the prior art, the connecting piece is an important factor for realizing the construction safety of the precast concrete structure, the earthquake-resistant bearing capacity of the joint surface and the earthquake-resistant ductility. The connecting piece that current is commonly used is the planar steel sheet, and the planar steel sheet generally has hoist and mount inconvenient etc. when as the connecting piece, still because there is stress concentration in the junction of corner and concrete of connecting piece, makes concrete local destruction or fracture easily in the course of working, finally leads to prefabricated component defective rate high, leads to prefabricated component out-of-plane rigidity not enough easily when using this kind of prefabricated component to be under construction, exists very big construction risk simultaneously. Even if the construction is completed, the mechanical property of the prefabricated part is poor, and the prefabricated structure is locally damaged under the actions of earthquake and repeated load. Therefore, how to find a connecting piece suitable for precast concrete elements, which solves the problems during prefabrication and can self-bear precast concrete elements during construction, has great significance in building industrialization
Meanwhile, the main stream structure of the current building industrialization is a shear wall structure system with a wall body being a precast concrete wallboard and connected by grouting sleeves between the upper part and the lower part, and the shear wall structure system has the advantages of larger construction quality control difficulty, longer construction period, low tensile strength, poor earthquake resistance, poor ductility under the earthquake action and easy brittle failure. Earthquake disasters are natural disasters with the greatest casualties, wherein casualties caused by huge earthquake disasters are main losses in earthquake disasters. Due to the limitations of the current economic conditions, technical level and the like, in the earthquake-resistant practice, the earthquake is mainly concentrated in the field of building structure earthquake resistance, and is far from adequate for dealing with huge earthquake disaster. Therefore, how to find a suitable building industrialization technology, meet the requirements of industrial construction, and effectively cope with large and even huge shocks is a challenge in building industrialization.
Disclosure of Invention
The invention aims to provide a self-supporting precast concrete wallboard, a concrete wall, a structural system and a construction method, which are used for solving the technical problems of high construction quality control difficulty, long construction period, low tensile strength, poor earthquake resistance, poor ductility under the action of earthquake and easy brittle failure existing in the existing precast concrete wallboard and a connecting mode.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a self-supporting precast concrete wallboard comprises a board body, wherein the board body is divided into a precast part in the middle part and a horizontal connecting end cast-in-situ part at one side or two sides,
the prefabricated part comprises prefabricated part vertical reinforcing steel bars, prefabricated part horizontal reinforcing steel bars and prefabricated part concrete,
the vertical connecting end of the prefabricated part is provided with a vertical connecting piece, the vertical connecting piece comprises prefabricated part vertical reinforcing steel bars extending out of the edge end surface of the prefabricated part and at least one vertical shearing connecting piece,
the vertical steel bars of the prefabricated part extend out of one side of the edge end face of the prefabricated part or extend out of the upper side and the lower side respectively,
the vertical shearing-resistant connecting piece is partially embedded in the prefabricated part, the embedded part is wrapped by the vertical steel bars of the prefabricated part and the horizontal steel bars of the prefabricated part, the vertical shearing-resistant connecting piece is a section of steel piece or a welded steel member,
the horizontal two sides of the prefabricated part are provided with horizontal connecting pieces, the horizontal connecting pieces comprise prefabricated part horizontal reinforcing bars extending out of the edge end surfaces of the prefabricated part and/or at least one horizontal shearing connecting piece,
the horizontal steel bars of the prefabricated part extend out from two sides of the edge end face of the prefabricated part,
the horizontal shearing-resistant connecting piece is partially pre-buried in the prefabricated part, the pre-buried part is wrapped by the vertical steel bars of the prefabricated part and the horizontal steel bars of the prefabricated part,
the horizontal connecting end cast-in-situ part comprises cast-in-situ part vertical steel bars, cast-in-situ part horizontal steel bars and cast-in-situ part post-pouring materials, and the cast-in-situ part post-pouring materials wrap the cast-in-situ part vertical steel bars, the cast-in-situ part horizontal steel bars and the horizontal connecting pieces.
At least one corner point of the end edge of the vertical shearing resistant connecting piece is cut into an arc surface or an inclined surface, or at least one edge of the end edge of the vertical shearing resistant connecting piece is cut into an arc surface or an inclined surface, the surface of the vertical shearing resistant connecting piece is fixedly connected with a shearing resistant accessory and/or an anchoring accessory,
the shearing accessory is a bolt, a steel bar, a steel plate or a section steel which is vertical to the side wall surface of the vertical shearing connecting piece and fixedly connected with the shearing accessory;
the anchoring accessory is a steel bar, an anchor bolt, a steel plate or a section steel which is fixedly connected to the end face of the embedded part.
The vertical shearing-resistant connecting piece is arranged at one end of the vertical connecting end, and a connecting groove or a connecting hole is formed at the other end of the vertical shearing-resistant connecting piece, which corresponds to the vertical shearing-resistant connecting piece; or the vertical shearing connectors are arranged at the upper and lower ends of the vertical connecting ends, the arrangement positions of the vertical shearing connectors at the two ends are up and down corresponding,
the vertical shearing connectors of each side vertical connecting end are provided with one or more than two at intervals in the middle.
The part of the horizontal steel bar of the cast-in-situ part extending out of the prefabricated part is in an annular closed shape or an unsealed open shape.
The horizontal shear connector is an additional horizontal steel bar, a steel plate, a section steel or a welded steel member.
The prefabricated part further comprises an oblique steel bar, and the oblique steel bar is fixedly connected with two adjacent diagonal vertical shear connectors.
The utility model provides a concrete wall of prefabricated concrete wallboard of self-supporting, includes the upper plate body and the lower plate body, and the upper plate body forms vertical connecting region with the hookup location department of the vertical link of the lower plate body, is equipped with vertical connecting region horizontal reinforcement in the vertical connecting region, and the vertical shearing connector of the upper plate body is whole with the vertical butt joint fixed connection of the vertical shearing connector of the lower plate body in vertical connecting region, and the vertical reinforcing bar of prefabricated portion of upper and lower two-layer is fixed connection in vertical connecting region, vertical post-cast material has been pour in the vertical connecting region and has made upper plate body and lower plate body connect into whole piece concrete wall, vertical post-cast material is concrete or grouting material, vertical post-cast material parcel vertical connecting piece and vertical connecting region horizontal reinforcement.
The utility model provides a concrete wall of self-supporting precast concrete wallboard, includes left side plate body and right side plate body, and the cast-in-place portion of the horizontal connecting end of left side plate body and right side plate body forms horizontal connecting region, the cast-in-place portion horizontal reinforcing bar fixed connection of both sides, cast-in-place portion post-cast material an organic whole of both sides are pour and are connected into whole piece concrete wall, cast-in-place portion post-cast material is concrete or grouting material.
The cast-in-situ vertical steel bars and the cast-in-situ horizontal steel bars are internally wrapped with steel bones with vertical through length, the surface of the steel bones is fixedly connected with pegs, and the steel bones are steel sections, steel pipes and/or welded steel members.
A structural system comprises more than two concrete walls and a floor slab which are connected into a whole to form a concrete shear wall system.
The structure system comprises the concrete shear wall system, and further comprises frame columns and frame beams which are added in the concrete shear wall system, wherein the concrete shear wall system, the frame columns and the frame beams are connected into a whole to form a frame shear wall structure system or a frame core tube structure system.
The energy dissipation component is connected with the concrete wall, the frame column or the frame beam into a whole, and is a constraint steel plate shear wall, a viscous damper or an buckling restrained brace.
A construction method of a self-supporting precast concrete wallboard comprises the following construction steps:
step one, manufacturing a vertical shearing-resistant connecting piece and/or a horizontal shearing-resistant connecting piece;
step two, manufacturing a mould, supporting the mould, and binding the vertical reinforcing steel bars of the prefabricated part and the horizontal reinforcing steel bars of the prefabricated part in the mould;
arranging vertical shearing connectors and/or horizontal shearing connectors according to the design positions of the vertical reinforcing steel bars of the prefabricated parts and the horizontal reinforcing steel bars of the prefabricated parts;
pouring precast concrete;
step five, curing the concrete to a preset strength and transporting to the site;
step six, erecting a cast-in-situ part template, and binding cast-in-situ part vertical steel bars and cast-in-situ part horizontal steel bars outside the edges of the prefabricated parts;
step seven, pouring post-pouring materials of the cast-in-situ part;
and step eight, curing the post-cast material of the cast-in-situ part to a preset strength.
A construction method of a concrete wall comprises the following construction steps:
step one, hoisting an upper layer plate body above a lower layer plate body;
step two, the vertical shearing-resistant connecting piece of the upper plate body and the vertical shearing-resistant connecting piece of the lower plate body are directly in butt joint connection in a vertical connecting area;
step three, fixedly connecting the prefabricated part vertical steel bars of the upper plate body with the prefabricated part vertical steel bars of the lower plate body in a vertical connecting area, and binding the horizontal steel bars of the vertical connecting area;
pouring a vertical post-pouring material in the vertical connection area;
and fifthly, curing the vertical post-cast material to the preset strength.
The construction method of the concrete wall is characterized by comprising the following construction steps:
step one, fixedly connecting horizontal steel bars of cast-in-situ parts of a left side plate body and a right side plate body;
and step two, integrally pouring cast-in-situ part post-pouring materials at two sides to form a whole concrete wall.
And thirdly, maintaining the post-cast material of the cast-in-situ part to a preset strength.
And placing steel bones in the horizontal connecting area before the second step.
Compared with the prior art, the invention has the following characteristics and beneficial effects:
the invention has special effect on house earthquake resistance and is beneficial to improving construction speed and construction quality.
According to the invention, the wallboard is divided into the prefabricated part and the cast-in-situ part, and the upper, lower, left, right and cast-in-situ parts of the prefabricated part are respectively subjected to double reinforcement, so that the mechanical properties such as shearing resistance, ductility and the like of the vertical joint surface of the prefabricated concrete wallboard are effectively improved, and the safety of the prefabricated structure is ensured.
The first heavy reinforcement is to add and establish vertical connecting piece for the vertical link of prefabricated portion, and wherein to the setting purpose of vertical shearing connecting piece promotion bending resistance, simplify vertical reinforcing bar and connect, still carry out preliminary treatment to the corner position of vertical shearing connecting piece, reduce or avoid the stress concentration that the junction of corner of connecting piece and concrete exists to avoid concrete local destruction or fracture, improve prefabricated component yield. The stress concentration is reduced, the durability of the joint between the component and the concrete can be ensured after the construction of the component is completed, and the mechanical property of the prefabricated component is improved, so that the function of the prefabricated component is ensured under the action of earthquake and repeated load. The precast concrete shearing-resistant connecting piece has special effect on improving the mechanical property of the joint surface of the precast concrete member, is beneficial to improving the construction speed and the construction quality, can directly use the embedded steel bones as hoisting, can be provided with hoisting holes at the position exposing the concrete, and is convenient for construction hoisting. Meanwhile, the corresponding arrangement of the vertical shearing-resistant connecting piece and the connecting groove or the connecting hole is used for ensuring that the vertical shearing-resistant connecting piece is correspondingly provided with the groove or the connecting piece, so that the construction is convenient, and the shearing force between the upper wallboard and the lower wallboard can be effectively transmitted.
The second reinforcing is to add horizontal connecting pieces for the horizontal edges of the prefabricated parts, so that local damage or cracking of concrete is avoided, the yield of prefabricated parts is improved, the integral durability of the prefabricated and cast-in-situ parts is enhanced, the shearing resistance of the vertical joint surfaces is improved, and the integral anti-seismic performance is improved, so that the functions of the prefabricated parts are ensured to be used under the actions of earthquake and repeated load. Meanwhile, the part of the horizontal steel bar of the cast-in-situ part, which extends out of the plate body, is in an annular closed shape or an unsealed open shape, so that the integrity of the prefabricated and cast-in-situ parts can be further enhanced, the shearing resistance of the vertical joint surface is improved, and the integral earthquake resistance is improved. The vertical shear connector can be fixedly connected with the vertical shear connector, the corresponding horizontal plane shearing force is transmitted to the vertical shear connector, and then the vertical shear connector is directly transmitted through the inclined steel bars, so that the integral shearing capacity of the prefabricated wallboard and the corresponding wall body can be effectively improved.
The wall body of the invention effectively improves the shear resistance of the junction surface of the prefabricated wall board, can play a role in bearing the self load of the prefabricated concrete wall board during construction, improves the construction speed, combines the anti-seismic advantage of the concrete structure, greatly improves the performances of shearing resistance, ductility and the like of the horizontal junction surface of the reinforced concrete wall board connected by the grouting sleeve, ensures that the house is not easy to collapse in an earthquake, provides enough out-of-plane rigidity, and can bear self load during construction. Particularly, in construction, after the vertical shearing-resistant connecting piece is connected, the prefabricated wallboard on the upper part is stable, no or only a small amount of support is needed, the on-site construction quality and on-site control are convenient to improve, the quality of casting concrete after the shearing-resistant connecting piece and the vertical connecting area is easy to control and guarantee, and the construction speed is high.
The invention has the combined advantages of the precast concrete shearing-resistant connecting piece and the precast concrete structure, and compared with the common reinforced concrete wallboard, the anti-seismic performance is greatly improved, so that the house is not easy to collapse in an earthquake, and the rejection rate of precast components is reduced. The precast concrete shear connector can increase out-of-plane rigidity of the precast member, so that the member can bear self-load during construction, and on-site construction quality and on-site control are facilitated to be improved. The welding connection quality between the prefabricated components is easy to control and ensure, and the construction speed is high.
Drawings
The invention is described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic view of a first embodiment of a self-supporting precast concrete wall panel of the present invention.
FIG. 2 is a schematic view of the cross-sectional structure A-A in FIG. 1.
Fig. 3 is a schematic structural view of a vertical shear connector.
Fig. 4 is a schematic view of a second prefabricated portion of an embodiment of a self-supporting precast concrete wall panel according to the present invention.
Fig. 5 is a schematic view of the structure of section B-B in fig. 4.
Fig. 6 is another structural schematic diagram of section B-B in fig. 4.
Fig. 7 is a schematic view of the structure of a three-prefabricated portion of a self-supporting prefabricated concrete panel embodiment of the present invention.
Fig. 8 is another structural schematic diagram of the section C-C in fig. 7.
Fig. 9 is a schematic view of the structure of a self-supporting precast concrete wall formed by vertical connection.
Fig. 10 is a schematic view of a construction of a self-supporting precast concrete wall formed by horizontally connecting concrete walls.
Fig. 11 is a schematic view of another construction of a self-supporting precast concrete wall formed by horizontally connecting the concrete walls.
FIG. 12 is a schematic structural diagram of a framed shear wall structure system.
Reference numerals: 1-prefabricated parts, 11-prefabricated part vertical reinforcements, 12-prefabricated part horizontal reinforcements, 13-prefabricated part concrete, 14-oblique reinforcements, 2-horizontal connection end cast-in-place parts, 21-cast-in-place part vertical reinforcements, 22-cast-in-place part horizontal reinforcements, 23-cast-in-place part post-cast materials, 3-vertical shearing connectors, 31-cambered surfaces or inclined surfaces, 32-shearing resistant accessories, 33-anchoring accessories, 4-horizontal shearing resistant connectors, 5-connection grooves or connection holes, 6-upper plate bodies, 7-lower plate bodies, 8-vertical connection areas, 81-vertical connection area horizontal steels, 9-vertical post-cast materials, 10-plate bodies, 15-left plate bodies, 16-right plate bodies, 17-horizontal connection areas, 18-steel bones, 19-frame columns and 20-frame beams.
Detailed Description
1-3, a self-supporting precast concrete wallboard comprises a board body 10, wherein the board body 10 is divided into a precast part 1 in the middle part and a horizontal connecting end cast-in-situ part 2 at one side or two sides. The shape of the plate body can be a straight shape, an L shape or a T shape. In this embodiment, a straight line shape is used.
The prefabricated part comprises prefabricated part vertical steel bars 11, prefabricated part horizontal steel bars 12 and prefabricated part concrete 13.
The vertical connecting end of the prefabricated part is provided with a vertical connecting piece, and the vertical connecting piece comprises prefabricated part vertical steel bars 11 extending out of the edge end face of the prefabricated part and four vertical shearing-resistant connecting pieces 3. The vertical steel bars 11 of the prefabricated part extend out of the upper side and the lower side of the edge end face of the prefabricated part 1 respectively. The vertical shearing connection piece 3 is partially pre-buried in the prefabricated part, the pre-buried part is wrapped by the vertical steel bars 11 of the prefabricated part and the horizontal steel bars 12 of the prefabricated part, and the vertical shearing connection piece 3 is a section of steel piece or a welded steel member
The horizontal bilateral symmetry of prefabricated part 1 has two horizontal connecting pieces, horizontal connecting piece is horizontal shear connector 4, and horizontal shear connector 4 is pre-buried in prefabricated part, and pre-buried part is wrapped up by prefabricated part vertical reinforcement 11 and prefabricated part horizontal reinforcement 12.
The horizontal connecting end cast-in-situ part 2 comprises cast-in-situ part vertical steel bars 21, cast-in-situ part horizontal steel bars 22 and cast-in-situ part post-pouring materials 23, wherein the post-pouring materials 23 wrap the cast-in-situ part vertical steel bars 21, the cast-in-situ part horizontal steel bars 22 and the horizontal connecting pieces. The horizontal shear connector 4 is an additional horizontal steel bar, a steel plate, a section steel or a welded steel member.
At least four corner points of the end edge of the vertical shearing resistant connecting piece 3 are cut into an arc surface or an inclined surface 31, in other embodiments, at least four edge edges of the end edge of the vertical shearing resistant connecting piece are cut into an arc surface or an inclined surface 31, the surface of the vertical shearing resistant connecting piece 3 is fixedly connected with a shearing resistant accessory 32 and an anchoring accessory 33, and in other embodiments, the shearing resistant accessory 32 and the anchoring accessory 33 can be independently arranged. The shear attachment 32 is a peg, a steel bar, a steel plate or a section steel which is perpendicular to the side wall surface of the vertical shear connector and fixedly connected with the vertical shear connector. The anchoring accessory 33 is a steel bar, an anchor bolt, a steel plate or a section steel fixedly connected to the end face of the embedded part.
The vertical shearing connectors are arranged at the upper end and the lower end of the vertical connecting end, and the arrangement positions of the vertical shearing connectors at the two ends correspond up and down.
In other embodiments, the vertical shearing connector 3 may be disposed at one end of the vertical connecting end, and a connection groove or a connection hole 5 is formed at the other end of the vertical connecting end corresponding to the position of the vertical shearing connector.
Two vertical shear connectors 3 at each side of the vertical connecting end are symmetrically arranged in the middle.
In a second embodiment, referring to fig. 4-6, unlike the first embodiment, the horizontal connector includes a horizontal shear connector 4 and further includes a prefabricated horizontal reinforcing bar 12 extending from an edge end surface of the prefabricated portion. The prefabricated part horizontal steel bars 12 extend out from two sides of the edge end face of the prefabricated part. The part of the cast-in-situ part horizontal steel bar 22 extending out of the prefabricated part is annular closed or open.
In a third embodiment, see fig. 7-8, unlike in the second embodiment, the prefabricated part further includes an oblique reinforcing steel bar 14, where the oblique reinforcing steel bar 14 is fixedly connected to two adjacent diagonal vertical shear connectors 3.
The construction method of the self-supporting precast concrete wallboard comprises the following construction steps:
step one, manufacturing a vertical shearing connector 3 and/or a horizontal shearing connector 4.
And secondly, manufacturing a mould, supporting the mould, and binding the prefabricated part vertical steel bars 11 and the prefabricated part horizontal steel bars 12 in the mould.
And thirdly, arranging the vertical shearing connectors 3 and/or the horizontal shearing connectors 4 according to the design positions of the prefabricated part vertical steel bars 11 and the prefabricated part horizontal steel bars 12.
And fourthly, pouring precast concrete 13.
And fifthly, curing the concrete to a preset strength and transporting to the site.
Step six, erecting a cast-in-situ part template, and binding cast-in-situ part vertical steel bars 21 and cast-in-situ part horizontal steel bars 22 outside the edges of the prefabricated parts.
And seventh, pouring post-pouring material 23 of the cast-in-situ part.
And step eight, curing the post-cast material of the cast-in-situ part to a preset strength.
Referring to fig. 9, a concrete wall comprising the self-supporting precast concrete wallboard comprises an upper layer plate body 6 and a lower layer plate body 7, wherein a vertical connection area 8 is formed at the connection position of the vertical connection end of the upper layer plate body and the lower layer plate body, a vertical connection area horizontal steel bar 81 is arranged in the vertical connection area 8, a vertical shearing resistant connecting piece 3 of the upper layer plate body and a vertical shearing resistant connecting piece 3 of the lower layer plate body are fixedly connected into a whole in a vertical connection area in a vertical butt joint manner, precast vertical steel bars 11 of the upper layer and the lower layer are fixedly connected in the vertical connection area 8, a vertical post-pouring material 9 is poured in the vertical connection area 8, the upper layer plate body 6 and the lower layer plate body 7 are connected into a whole concrete wall, the vertical post-pouring material 9 is concrete or grouting material, and the vertical post-pouring material 9 wraps the vertical connecting piece and the vertical connection area horizontal steel bar 81.
The construction method of the concrete wall comprises the following construction steps:
step one, hoisting the upper plate body 6 to the upper side of the lower plate body 7.
And step two, the vertical shearing-resistant connecting piece 3 of the upper plate body and the vertical shearing-resistant connecting piece 3 of the lower plate body are directly in butt joint connection in a vertical connecting area.
And thirdly, fixedly connecting the prefabricated part vertical steel bars 11 of the upper plate body with the prefabricated part vertical steel bars 11 of the lower plate body in a vertical connecting area, and binding the horizontal steel bars 81 of the vertical connecting area.
And fourthly, pouring a vertical post-pouring material 9 in the vertical connection area 8.
And fifthly, curing the vertical post-cast material to the preset strength.
Referring to fig. 10, a concrete wall comprising the self-supporting precast concrete wallboard comprises a left side plate body 15 and a right side plate body 16, wherein a horizontal connection area 17 is formed at a cast-in-place part of a horizontal connection end of the left side plate body 15 and the right side plate body 16, horizontal steel bars 22 of cast-in-place parts on two sides are fixedly connected, post-cast materials 23 of cast-in-place parts on two sides are integrally cast and connected into a whole concrete wall, and the post-cast materials 23 of the cast-in-place parts are concrete or grouting materials.
Referring to fig. 11, another concrete wall comprising the self-supporting precast concrete wallboard is shown, wherein the cast-in-situ portion vertical steel bar 21 and the cast-in-situ portion horizontal steel bar 22 are internally wrapped with a steel rib 18 with a vertical through length, the surface of the steel rib is fixedly connected with a peg, and the steel rib is a section steel, a steel tube and/or a welded steel member.
The construction method comprises the following construction steps:
step one, the cast-in-situ part horizontal steel bar 22 of the left side plate body 15 and the right side plate body 16 are fixedly connected.
And step two, integrally pouring cast-in-situ part post-pouring materials 23 on two sides to form a whole concrete wall.
And thirdly, maintaining the post-cast material of the cast-in-situ part to a preset strength.
And placing steel bones 18 in the horizontal connecting area before the second step.
A structural system is a shear wall structural system, which comprises more than two concrete walls and is connected with a floor slab into a whole to form the concrete shear wall system.
Referring to fig. 12, another structural system is a frame shear wall structural system, which includes the above-mentioned concrete shear wall system, further includes frame columns 19 and frame beams 20 added in the concrete shear wall system, and the concrete shear wall system, the frame columns and the frame beams are connected as a whole to form a frame shear wall structural system or a frame core tube structural system.
The other structure system is a frame shear wall structure system with a support, and further comprises an additional energy consumption component which is connected with a concrete wall, a frame column or a frame beam into a whole, wherein the energy consumption component is a constraint steel plate shear wall, a viscous damper or an anti-buckling support.
Claims (14)
1. The utility model provides a self-supporting precast concrete wallboard, includes the plate body, its characterized in that: the plate body (10) is divided into a prefabricated part (1) in the middle part and a cast-in-situ part (2) at one side or two sides of the horizontal connecting end,
the prefabricated part comprises prefabricated part vertical steel bars (11), prefabricated part horizontal steel bars (12) and prefabricated part concrete (13),
the vertical connecting end of the prefabricated part is provided with a vertical connecting piece, the vertical connecting piece comprises prefabricated part vertical reinforcing steel bars (11) extending out of the edge end surface of the prefabricated part and at least one vertical shearing-resistant connecting piece (3),
the vertical steel bars (11) of the prefabricated part extend out of one side of the edge end face of the prefabricated part (1) or extend out of the upper side and the lower side respectively,
the vertical shearing-resistant connecting piece (3) is partially embedded in the prefabricated part, the embedded part is wrapped by the vertical steel bars (11) of the prefabricated part and the horizontal steel bars (12) of the prefabricated part, the vertical shearing-resistant connecting piece (3) is a section of steel piece or a welded steel member,
the horizontal two sides of the prefabricated part (1) are provided with horizontal connecting pieces, the horizontal connecting pieces comprise prefabricated part horizontal reinforcing bars (12) extending out of the edge end surfaces of the prefabricated part and/or at least one horizontal shearing connecting piece (4),
the horizontal steel bars (12) of the prefabricated part extend out from two sides of the edge end face of the prefabricated part,
the horizontal shearing-resistant connecting piece (4) is partially embedded in the prefabricated part, the embedded part is wrapped by the vertical steel bars (11) of the prefabricated part and the horizontal steel bars (12) of the prefabricated part,
the horizontal connecting end cast-in-situ part comprises a cast-in-situ part vertical steel bar (21), a cast-in-situ part horizontal steel bar (22) and a cast-in-situ part post-pouring material (23), wherein the cast-in-situ part post-pouring material (23) wraps the cast-in-situ part vertical steel bar (21), the cast-in-situ part horizontal steel bar (22) and the horizontal connecting piece;
the vertical shearing-resistant connecting piece (3) is arranged at one end of the vertical connecting end, and a connecting groove or a connecting hole (5) is formed at the other end of the vertical shearing-resistant connecting piece, which corresponds to the vertical shearing-resistant connecting piece; or the vertical shearing connectors are arranged at the upper end and the lower end of the vertical connecting end, the arrangement positions of the vertical shearing connectors at the two ends are up-and-down corresponding, and one or more than two vertical shearing connectors (3) at each side of the vertical connecting end are arranged at the center;
the part of the cast-in-situ part horizontal steel bar (22) extending out of the prefabricated part is in an annular closed shape or an unsealed open shape.
2. The self-supporting precast concrete wall panel of claim 1, wherein: at least one corner point of the end edge of the vertical shearing resistant connecting piece (3) is cut into an arc surface or an inclined surface (31), or at least one edge of the end edge of the vertical shearing resistant connecting piece is cut into an arc surface or an inclined surface (31), the surface of the vertical shearing resistant connecting piece (3) is fixedly connected with a shearing resistant accessory (32) and/or an anchoring accessory (33),
the shearing attachment (32) is a bolt, a reinforcing steel bar, a steel plate or a section steel which is vertical to the side wall surface of the vertical shearing attachment and fixedly connected with the side wall surface of the vertical shearing attachment;
the anchoring accessory (33) is a steel bar, an anchor bolt, a steel plate or a section steel which is fixedly connected to the end face of the embedded part.
3. The self-supporting precast concrete wall panel of claim 1, wherein: the horizontal shear connector (4) is an additional horizontal steel bar, a steel plate, a section steel or a welded steel member.
4. The self-supporting precast concrete wall panel of claim 1, wherein: the prefabricated part further comprises an oblique steel bar (14), and the oblique steel bar (14) is fixedly connected with two adjacent diagonal vertical shear connectors (3).
5. A concrete wall comprising the self-supporting precast concrete panel of any one of claims 1 to 4, characterized in that: including the upper plate body (6) and lower plate body (7), the hookup location department of the vertical link of the upper plate body and the lower plate body forms vertical connection district (8), be equipped with vertical connection district horizontal reinforcement (81) in vertical connection district (8), vertical shear connector (3) of the upper plate body and vertical butt joint fixed connection of vertical shear connector (3) of the lower plate body are whole in vertical connection district, prefabricated portion vertical reinforcement (11) of upper and lower two-layer are in vertical connection district (8) fixed connection, vertical post-cast material (9) have been pour in vertical connection district (8) and have made upper plate body (6) and lower plate body (7) connect into whole concrete wall, vertical post-cast material (9) are concrete or grouting material, vertical post-cast material (9) parcel vertical connector and vertical connection district horizontal reinforcement (81).
6. A concrete wall according to claim 5, wherein: the concrete wall comprises a left side plate body (15) and a right side plate body (16), wherein a horizontal connection area (17) is formed at a cast-in-place part of the horizontal connection end of the left side plate body (15) and the horizontal connection end of the right side plate body (16), horizontal steel bars (22) of cast-in-place parts on two sides are fixedly connected, cast-in-place part post-cast materials (23) on two sides are integrally cast and connected into a whole concrete wall, and the cast-in-place part post-cast materials (23) are concrete or grouting materials.
7. The concrete wall according to claim 6, wherein: the cast-in-situ vertical steel bar (21) and the cast-in-situ horizontal steel bar (22) are internally wrapped with steel bones (18) with vertical through length, the surface of each steel bone is fixedly connected with a peg, and each steel bone is a section steel, a steel tube and/or a welded steel member.
8. A structural system, characterized by: more than two concrete walls and floors comprising any one of claims 5-7 are joined together to form a concrete shear wall system.
9. A structural system, characterized by: a concrete shear wall system comprising the concrete shear wall system of claim 8, further comprising frame columns (19) and frame beams (20) added to the concrete shear wall system, and the concrete shear wall system, the frame columns and the frame beams are integrally connected to form a frame shear wall structure system or a frame core tube structure system.
10. The architecture of claim 9, wherein: the energy dissipation component is connected with the concrete wall, the frame column or the frame beam into a whole, and is a constraint steel plate shear wall, a viscous damper or an buckling restrained brace.
11. A method of constructing a self-supporting precast concrete panel according to any one of claims 1 to 4, characterized by the following construction steps:
step one, manufacturing a vertical shearing resistant connecting piece (3) and/or a horizontal shearing resistant connecting piece (4);
step two, manufacturing a mould and supporting the mould, and binding the prefabricated part vertical steel bars (11) and the prefabricated part horizontal steel bars (12) in the mould;
arranging vertical shearing connectors (3) and/or horizontal shearing connectors (4) according to the design positions of the prefabricated part vertical steel bars (11) and the prefabricated part horizontal steel bars (12);
pouring precast concrete (13);
step five, curing the concrete to a preset strength and transporting to the site;
step six, erecting a cast-in-situ part template, and binding cast-in-situ part vertical steel bars (21) and cast-in-situ part horizontal steel bars (22) on the outer side of the edge of the prefabricated part;
step seven, pouring post-pouring materials (23) of the cast-in-situ part;
and step eight, curing the post-cast material of the cast-in-situ part to a preset strength.
12. A construction method comprising the concrete wall according to claim 5, characterized by the steps of:
hoisting an upper layer plate body (6) to the upper part of a lower layer plate body (7);
step two, the vertical shearing-resistant connecting piece (3) of the upper plate body and the vertical shearing-resistant connecting piece (3) of the lower plate body are directly in butt joint connection in a vertical connecting area;
step three, fixedly connecting the prefabricated part vertical steel bars (11) of the upper plate body with the prefabricated part vertical steel bars (11) of the lower plate body in a vertical connecting area, and binding the vertical connecting area horizontal steel bars (81);
pouring a vertical post-pouring material (9) in the vertical connecting area (8);
and fifthly, curing the vertical post-cast material to the preset strength.
13. A construction method comprising the concrete wall according to claim 6 or 7, characterized by the following construction steps:
step one, fixedly connecting cast-in-situ part horizontal steel bars (22) of a left side plate body (15) and a right side plate body (16);
step two, integrally pouring cast-in-situ part post-pouring materials (23) on two sides to form a whole concrete wall;
and thirdly, maintaining the post-cast material of the cast-in-situ part to a preset strength.
14. A method of constructing a concrete wall comprising the method of claim 13, wherein: and placing steel bones (18) in the horizontal connecting area before the second step.
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| CN110424566A (en) * | 2019-07-17 | 2019-11-08 | 姚攀峰 | Reinforced precast concrete wall panel, concrete walls, structural system and engineering method are poured in one kind |
| CN111101645A (en) * | 2019-12-31 | 2020-05-05 | 北京峰筑工程技术研究院有限公司 | Self-in-place reinforced precast concrete wallboard, connecting structure and construction method |
| CN113027021A (en) * | 2021-03-17 | 2021-06-25 | 中国建筑第五工程局有限公司 | Support-free prefabricated floor slab with bracket |
| CN114232812A (en) * | 2021-12-29 | 2022-03-25 | 中铁建设集团有限公司 | Unequal strength wall beam joint based on steel plate hoop constrained concrete superposed short column |
| CN115749036A (en) * | 2022-06-14 | 2023-03-07 | 中冶建筑研究总院有限公司 | Take assembled concrete shear wall structure of anchor plate reinforcing bar overlap joint |
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