CN107989227B - Assembled steel reinforced concrete shear wall structure and preparation and installation methods thereof - Google Patents
Assembled steel reinforced concrete shear wall structure and preparation and installation methods thereof Download PDFInfo
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- CN107989227B CN107989227B CN201711379404.6A CN201711379404A CN107989227B CN 107989227 B CN107989227 B CN 107989227B CN 201711379404 A CN201711379404 A CN 201711379404A CN 107989227 B CN107989227 B CN 107989227B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
- E04B2/562—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with fillings between the load-bearing elongated members
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
- E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
- E04C2/28—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups combinations of materials fully covered by groups E04C2/04 and E04C2/08
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/38—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure with attached ribs, flanges, or the like, e.g. framed panels
- E04C2/384—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure with attached ribs, flanges, or the like, e.g. framed panels with a metal frame
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2415—Brackets, gussets, joining plates
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2418—Details of bolting
Abstract
The invention discloses an assembled steel reinforced concrete shear wall structure, wherein mounting holes are formed in the outer side flanges of end beams at the upper end or the lower end of the assembled steel reinforced concrete shear wall structure; the end without the beam is provided with a connecting steel plate seat, and the connecting steel plate seat is also provided with a mounting hole which corresponds to the mounting hole on the outer flange of the end beam; and a process groove for installing bolts or nuts is formed in the precast concrete at the position corresponding to the installation hole on the outer flange of the end beam. The assembled steel reinforced concrete shear wall structure has the advantages of high factory prefabrication degree and less field wet operation. The assembled steel reinforced concrete shear walls and the peripheral steel beams are connected by adopting full bolts, so that the site construction speed is high. The earthquake-proof performance is good, the earthquake-proof structure is applicable to areas with high earthquake intensity, and the structure is high in applicable height.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to an assembled steel reinforced concrete shear wall structure and a preparation and construction method thereof.
Background
In the residential building of China, the cast-in-situ reinforced concrete shear wall residential structure is widely applied. The cast-in-situ reinforced concrete shear wall structure house has: (1) The structure is integrated with the enclosure, and the shear wall is used as a structural member and an enclosure member; (2) The structure and the heat preservation are integrated, the concrete is a heat inert material, and the heat preservation performance is good; (3) The structure and the protection are integrated, the steel bars are coated in the concrete, corrosion prevention and fire prevention are not needed, and maintenance is avoided. (4) The structure and the decoration are integrated, and the concrete can be directly used as a decoration surface layer. (5) good economical efficiency and high structural rigidity. (6) good use effect, and no beam or column is exposed in the room. (7) good sound insulation effect. And the like. But the house with the cast-in-situ reinforced concrete shear wall structure still exists: the method has the advantages of multiple on-site wet operations, low assembly degree, resource waste, environmental pollution, incapability of realizing four-section environment protection and the like, and does not meet the modern development requirements of the building industry.
The prefabricated reinforced concrete shear wall structure system has the advantages of factory prefabrication, field assembly construction, less resource waste, less environmental pollution and the like, but the prefabricated reinforced concrete shear wall structure system still has the defects of large number of connection areas, inconvenient node connection, more field wet operation, low construction efficiency, high cost and the like. The steel bars in the precast reinforced concrete shear wall structure are connected by adopting grouting sleeves, the connecting mode has higher requirements on the machining precision of the precast reinforced concrete shear wall, the positions of the steel bars are slightly deviated, and the on-site steel bars are difficult to penetrate into the sleeves; meanwhile, as the number of the steel bars of the shear wall is large and the shear wall is operated at high altitude, the centering and steel bar connection site construction difficulties of the precast reinforced concrete shear walls at the upper layer and the lower layer are large; after the steel bars of the lower-layer precast reinforced concrete shear wall extend outwards to penetrate into the upper-layer precast reinforced concrete shear wall to reserve a grouting sleeve, high-strength grouting material is also required to be poured into the sleeve, and as the working procedure is that the hidden engineering and the on-site operation workers are mostly ordinary farmers, the grouting construction quality of the steel bar sleeve is difficult to ensure, and even if a problem is found, the problem is difficult to remedy, and a certain potential safety hazard exists.
Therefore, developing a novel fabricated shear wall structure system with comprehensive advantages of industrial production, field full-fabricated connection, small number of connection joints, high construction efficiency, good economy and the like becomes a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide an assembled steel reinforced concrete shear wall structure which has novel and unique structure, is convenient to use, can effectively avoid the problems of multiple field wet operations, low construction efficiency, high cost, larger field construction difficulty of steel bar grouting sleeve connection, difficult quality assurance, high cost and the like, and is a building structural member; the specific technical scheme is as follows:
an assembled steel reinforced concrete shear wall structure comprises a steel bar structure and precast concrete; the steel bar structure comprises vertical steel bars which are horizontally distributed, edge member longitudinal steel bars, horizontal steel bars which are longitudinally distributed and edge member stirrups for fixing the edge member longitudinal steel bars; the assembled steel reinforced concrete shear wall structure is higher than one layer of steel reinforced concrete shear wall structure; the steel bar structure also comprises a plurality of cross beams and a plurality of upright posts; the cross beam and the upright post are made of profile steel; the top surface of the beam is consistent with the bottom surface of the floor slab in height; the precast concrete is arranged in a segmented mode, and a pouring reserved section is arranged at a position corresponding to each floor slab; the steel bar structure continuously passes through a pouring reserved section among all layers of precast concrete, and a mounting hole is formed in an outer flange of an end beam at the upper end or the lower end of the assembled steel reinforced concrete shear wall structure; the end without the beam is provided with a connecting steel plate seat, and the connecting steel plate seat is also provided with a mounting hole which corresponds to the mounting hole on the outer flange of the end beam; a process groove for installing bolts or nuts is formed in the precast concrete at the position corresponding to the installation hole on the outer flange of the end beam; the two ends of the cross beam are provided with T-shaped beam supports and connecting plates for connecting peripheral steel beams, and bolt holes are formed in the T-shaped beam supports and the connecting plates; the fabricated steel reinforced concrete shear wall structure further comprises an L-shaped connecting piece connected with the peripheral steel beams, and bolt holes are formed in the L-shaped connecting piece.
Further, the height of the pouring reserved section is not larger than the thickness of the floor slab of the layer.
Further, the height of the extending end of the upright post is 200 mm-600 mm.
Further, the height of the connecting steel plate seat is 50 mm-150 mm.
Further, the thickness of the precast concrete is 50-200 mm greater than the section width of the wider section steel in the cross beam and the upright post.
The invention also provides a preparation method of the fabricated steel reinforced concrete shear wall structure, which comprises the following steps:
1) Welding a beam made of profile steel and a stand column into a steel frame in a factory, wherein one end of the stand column is provided with an end beam, the outer side flange plate of the end beam is provided with a bolt mounting hole, and the other end of the stand column is provided with a connecting steel plate seat;
2) Placing the steel frame on a die table; fixing a horizontal steel bar, a vertical steel bar, an edge member stirrup and an edge member longitudinal bar on the steel frame; one end of the vertical steel bar is welded on an end beam rib plate at the end part of the steel frame, and the other end of the vertical steel bar is welded on the connecting steel plate seat rib plate;
3) Setting side dies, and setting pouring reserved sections at positions corresponding to each floor slab; pouring concrete, and vibrating while pouring;
4) And (5) curing the concrete after pouring is completed.
Further, the method also comprises the following steps:
and step 1) further comprises welding stiffening ribs between the flanges of the beam column joint area.
The invention also discloses an installation method of the assembled steel reinforced concrete shear wall structure, which comprises the following steps:
1) Installing a next section of assembled steel reinforced concrete shear wall structure; the method comprises the steps of using temporary support to fix, respectively connecting T-shaped beam supports and connecting plates at two ends of a beam of an assembled steel reinforced concrete shear wall structure with a lower flange and a web plate of a peripheral steel beam, and respectively connecting an L-shaped connecting piece with an upper flange of the peripheral steel beam and a connecting steel plate seat;
2) Installing each layer of horizontal floor slab in the next section of assembled steel reinforced concrete shear wall structure, and sequentially arranging each layer of horizontal floor slab reinforcing steel bars;
3) Pouring the laminated layer concrete of each layer of floor and pouring the reserved section;
4) Connecting the end cross beam between the upper section and the lower section of assembled steel reinforced concrete shear wall structure with the connecting steel plate seat, and connecting the connecting steel plate seat with the peripheral steel beam;
5) Setting horizontal distribution steel bars in the casting reserved section at the joint, and casting the casting reserved section at the joint;
6) Installing each layer of horizontal precast floor slabs in the assembled steel reinforced concrete shear wall structure, and arranging horizontal floor slab reinforcing steel bars;
7) Pouring concrete to fill the floor slab;
and (3) repeating the steps 1) to 7) until all the layers of assembled steel reinforced concrete shear wall structures are installed.
Further, the T-shaped beam supports, the connecting plates and the L-shaped connecting pieces at the two ends of the cross beam are connected with the peripheral steel beams through high-strength bolts.
The invention uses the built-in steel frame as a bearing framework during construction, realizes that a plurality of structural layers are used as a prefabricating unit, greatly reduces the number of connecting joints and can greatly improve the construction efficiency. The steel bars in the upper layer and the lower layer type steel concrete shear walls are connected through the built-in steel cross beam and the end connection steel plate seat by high-strength bolts, so that the defects of high field construction difficulty, difficult quality assurance and high cost in grouting connection of the steel bar sleeves are avoided. The steel reinforced concrete shear wall structure has good earthquake resistance, can be suitable for high-intensity areas, and has high structure application height.
Drawings
FIG. 1 is a schematic structural view of an assembled steel reinforced concrete shear wall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the fabricated steel reinforced concrete shear wall structure of the present invention;
FIG. 3 is a schematic view of the internal structure of the upper connection part;
FIG. 4 is a schematic view of the internal structure of the lower connecting portion;
fig. 5 is an assembled schematic view of an assembled steel reinforced concrete shear wall structure.
In the figure: 1. a cross beam; 2. a column; 3. edge member stirrups; 4. horizontal steel bars; 5. vertical steel bars; 6. connecting a steel plate seat; 7. edge component longitudinal ribs; 8. concrete outer leaf plates; 9. prefabricating concrete; 10. a connecting plate; 11. t-shaped beam support; 12. an L-shaped connecting plate; 13. a perimeter steel beam; A. an upper shear wall structure; B. and a lower shear wall structure.
Description of the embodiments
The present invention will be described more fully with reference to the following examples. This invention may be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature's illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "under" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "lower" may encompass both an upper and lower orientation. The device may be otherwise positioned (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1, the fabricated steel reinforced concrete shear wall structure in this embodiment includes precast concrete 9 and a steel reinforcement structure. When pouring, the concrete of the whole shear wall is not poured into a whole; but rather casting in segments. The position of the concrete corresponding layer floor slab is provided with a casting reserved section, the steel bars of the floor slab or only the upper layer steel bars extend into and are anchored between the precast concrete layers, and the casting reserved section, the floor slab and the precast steel reinforced concrete shear wall are cast together on site, so that the structural strength and the integrity of the building are improved.
The outer side of the upright post 2 is welded with a T-shaped beam support 11, and a bolt hole is formed in the top plate of the T-shaped beam support 11; support is conveniently provided for hoisting the steel beam 1; and is fixedly connected with the lower flange of the steel beam 1 through high-strength bolts. In order not to affect the hoisting of the steel beam 1, an L-shaped connecting plate 12 for fixing the upper flange of the steel beam 1 is fixedly connected with the upright post 2 by bolts. A connecting plate 10 welded on the upright post 2 and in the same direction as the extending direction of the upright post is further arranged between the T-shaped beam support 11 and the L-shaped connecting plate 12, the connecting plate 10 is fixedly connected with a web plate of the steel beam 1 through bolts, and the connection strength of the steel beam 1 and the assembled steel reinforced concrete shear wall structure is further improved.
As shown in fig. 2 to 4, the reinforcing structure includes a vertical reinforcing bar 5 horizontally distributed and an edge member longitudinal bar 7, a horizontal reinforcing bar 4 longitudinally distributed and an edge member stirrup 3 fixing the edge member longitudinal bar 7. In order to improve the strength, the rigidity, the ductility and the convenience in connection of the shear wall structure, the steel bar structure also comprises a steel frame consisting of a plurality of layer crossbeams and a plurality of upright posts 2; the steel frame may be arranged on a floor basis. The reinforced structure continuously passes through the pouring reserved sections among the precast concrete layers, so that the number of connecting joints is reduced, and the construction process is simplified. The vertical steel bars 5 penetrating up and down and the edge member longitudinal bars 7 can improve the strength and the integrity of the assembled steel reinforced concrete shear wall structure. Connecting structures are arranged in casting reserved sections at the upper end and the lower end of the assembled steel reinforced concrete shear wall structure; the shear wall structure can be conveniently connected in series up and down through the connecting structure, and is suitable for multi-layer or high-rise buildings.
The assembled steel reinforced concrete shear wall structure can be in a straight shape, a T shape, an L shape or a cross shape; an inclined support can be arranged between the layer beam and the upright post 2; the strength of the steel frame is improved.
The bottom of the connecting steel plate seat 6 is a steel plate seat, and the thickness is not less than 10mm; the steel plate seat is provided with a plurality of bolt mounting holes. A central stiffening rib is vertically welded along the length direction, and a plurality of auxiliary stiffening ribs perpendicular to the central stiffening rib are arranged along the length direction of the central stiffening rib. The position of the auxiliary stiffening rib corresponds to the setting position of the vertical steel bar 5; the vertical steel bars 5 can be welded on the side surfaces of the steel plates of the auxiliary stiffening ribs, and the force of the vertical steel bars 5 is transmitted to the connecting steel plate seat 6.
The upper end of the vertical steel bar 5 is welded on the rib plate of the end beam, and the lower end of the vertical steel bar 5 is welded on the rib plate of the connecting steel plate seat 6; so that the structural strength of the steel bar is higher.
L-shaped connecting pieces connected with two ends of the steel plate seat 6 are welded at the bottom end parts of the upright posts 2, and bolt holes are formed in the bottoms of the L-shaped connecting pieces and used for fixing the peripheral steel beams 13.
In order to facilitate connection with each floor slab, the integrity of the structure is improved, and the height of the casting reserved section is not greater than the thickness of the floor slab of the layer.
In order to arrange the connecting plates of the upper layer shear wall structure A and the lower layer shear wall structure B and facilitate construction operation; the height of the extending end of the upright post 2 is 200 mm-600 mm.
In order to improve the connection strength of the upper shear wall structure A and the lower shear wall structure B; the height of the connecting steel plate seat is 50 mm-150 mm.
The fabricated steel reinforced concrete shear wall structure is prepared by the following method:
1) In a factory, welding a beam 1 and a column 2 which are made of profile steel into a steel frame, and welding an end beam at the upper end of the column 2; the upper flank edge plate of the end part cross beam is provided with a bolt mounting hole; the lower end part is welded and connected with a steel plate seat 6; if necessary, a stiffening rib can be welded between the flanges of the beam column joint area;
2) Pouring a concrete outer blade plate 8, arranging a heat-insulating connecting piece (not shown in the figure) on the concrete outer blade plate 8, and curing;
3) After curing the concrete outer blade 8, placing the concrete outer blade on a mold table, and placing an insulation layer (not shown in the figure) on the outer blade, wherein the insulation connecting piece penetrates through the insulation layer; if no insulation layer is required or no insulation layer and no outer leaf are required, step 2) and step 3) may be omitted;
4) Placing the steel frame on a die table; fixing a horizontal steel bar 4, a vertical steel bar 5, an edge member stirrup 3 and an edge member longitudinal bar 7 on a steel frame; the upper end of the vertical steel bar 5 is welded on the rib plate of the end beam, and the lower end of the vertical steel bar 5 is welded on the rib plate of the connecting steel plate seat 6;
5) Setting side dies, and setting pouring reserved sections at positions corresponding to each floor slab; pouring concrete, and vibrating while pouring; the process grooves for installing bolts or nuts are arranged at the positions corresponding to the bolt installation holes of the end cross beam, so that the bolts or nuts can be conveniently installed;
6) And (5) curing the concrete after pouring is completed. A casting reserved section is reserved in the middle of the precast concrete block 9 formed by casting and is used for casting in situ. Precast concrete segments 9 surround the steel frame segments.
The end beam may be disposed below, and the connection steel plate holder 6 may be disposed above.
As shown in fig. 5, after the fabricated steel reinforced concrete shear wall structure is transported to the site, the installation is performed by the following method:
1) Installing a lower shear wall structure B; the method comprises the steps of (1) temporarily supporting and fixing, wherein T-shaped beam supports 11 and connecting plates 10 at two ends of a beam 1 of an assembled steel reinforced concrete shear wall structure are respectively connected with lower flanges and webs of peripheral steel beams 13; connecting the L-shaped connecting piece 12 with the upper flange of the peripheral steel beam;
2) Installing each layer of horizontal floor slab in the next section of assembled steel reinforced concrete shear wall structure, and sequentially arranging each layer of horizontal floor slab reinforcing steel bars;
3) Pouring laminated layer concrete of each layer of floor slab of the lower-layer shear wall structure B and pouring a reserved section, and connecting the horizontal floor slab with the shear wall structure;
4) The steel plate fixing seat 6 at the lower end of the upper shear wall structure A is connected with the end cross beam at the upper end of the lower shear wall structure B by a high-strength bolt; connecting the connecting steel plate seat 6 with the peripheral steel beam 13;
5) Setting horizontal distribution steel bars in the casting reserved section at the joint, and casting concrete to fill the floor slab and the casting reserved section at the joint;
6) Installing each layer of horizontal precast floor slabs in the assembled steel reinforced concrete shear wall structure, and arranging horizontal floor slab reinforcing steel bars;
7) Pouring concrete to fill the floor slab and the pouring reserved section at the joint;
the upper layer shear wall structure A and the lower layer shear wall structure B are installed; and repeating the steps 1) to 7) until all the shear wall structures are installed.
Compared with the prior art, the prefabricated reinforced concrete shear wall structure only takes one structure layer height as one prefabricated unit, so that the number of connecting joints is large, and the construction efficiency is low; the invention uses the built-in steel frame as a bearing framework during construction, realizes that a plurality of structural layers are used as a prefabricating unit, greatly reduces the number of connecting joints and can greatly improve the construction efficiency. The vertical connection of the precast reinforced concrete shear wall structure usually adopts a steel bar lap joint or grouting sleeve connection mode, and the connection mode has higher requirements on the processing precision of precast components and is difficult to construct on site; sleeve grouting is a concealed project, grouting quality is difficult to guarantee, and the cost of the steel bar connecting sleeve is high. The invention comprises the following steps: 1) The steel plate seat connected with the lower part of the upper section precast shear wall is connected with the steel frame beam arranged in the lower section precast shear wall through the high-strength bolts, so that the difficulty of vertical steel bar connection is avoided; 2) The prefabricated shear wall and the steel beam are connected through the high-strength bolts, and the steel plate seat connected with the lower part of the upper section prefabricated shear wall plays a role in connecting the upper section prefabricated shear wall with the lower section prefabricated shear wall and a role in connecting the upper section prefabricated shear wall with the steel beam, so that the prefabricated shear wall is multipurpose and has good economical efficiency. The steel structure has high machining precision, and the connection mode can ensure the field construction quality; meanwhile, the connection mode has no hidden engineering, and the quality is easy to ensure. The built-in steel frame can play a role in bearing a framework, connecting pieces connected with the upper section precast shear wall and the peripheral steel beams during installation, can restrain concrete, bear load together with reinforced concrete, has higher structural bearing capacity and better anti-seismic performance, and can be suitable for areas with high earthquake intensity.
The invention relates to an assembled steel reinforced concrete shear wall structure and a preparation and installation method thereof, which comprises the following steps:
(1) The factory prefabrication degree is high, and the field wet operation is few. The assembled steel reinforced concrete shear wall structure is prefabricated integrally in a factory by taking the heights of a plurality of structural layers as an installation unit.
(2) And (5) assembling construction. The assembled steel reinforced concrete shear wall structure, the steel beam and the upper assembled steel reinforced concrete shear wall structure adopt a full-bolt connection mode, and the site construction speed is high.
(3) The anti-corrosion fireproof performance is good, and maintenance is avoided. The steel structure part in the assembled steel reinforced concrete shear wall structure is coated in the concrete, so that corrosion and fire prevention measures are not needed, the corrosion and fire prevention performance is good, and maintenance is avoided.
(4) Structure, enclosure, heat preservation and decoration. The assembled steel reinforced concrete shear wall structure not only has the function of bearing the structure, but also has the function of building enclosure, meanwhile, the heat preservation layer can be compounded with the assembled steel reinforced concrete shear wall structure in a factory, the outer surface of the outer blade plate of the structure can realize the effects of bare concrete and decorative concrete, and the integration of the structure, enclosure, heat preservation and decoration is realized.
(5) The steel reinforced concrete shear wall structure has good earthquake resistance, can be suitable for high-intensity areas, and has high structure application height.
And the like, can be applied to multi-story high-rise steel structure buildings, and has better popularization and application prospects especially in steel structure houses.
The above examples are for illustration of the invention only and, in addition, there are many different embodiments which will be apparent to those skilled in the art after having the insight into the present invention and are not explicitly recited herein.
Claims (9)
1. An assembled steel reinforced concrete shear wall structure comprises a steel bar structure and precast concrete; the steel bar structure comprises vertical steel bars which are horizontally distributed, edge member longitudinal steel bars, horizontal steel bars which are longitudinally distributed and edge member stirrups for fixing the edge member longitudinal steel bars; the assembled steel reinforced concrete shear wall structure is characterized in that the height of the assembled steel reinforced concrete shear wall structure is higher than one layer of height; the steel bar structure also comprises a plurality of cross beams and a plurality of upright posts; the cross beam and the upright post are made of profile steel; the top surface of the beam is consistent with the bottom surface of the floor slab in height; the precast concrete is arranged in a segmented mode, and a pouring reserved section is arranged at a position corresponding to each floor slab; the steel bar structure continuously passes through a pouring reserved section among all layers of precast concrete, and a mounting hole is formed in an outer flange of an end beam at the upper end or the lower end of the assembled steel reinforced concrete shear wall structure; the end without the beam is provided with a connecting steel plate seat, and the connecting steel plate seat is also provided with a mounting hole which corresponds to the mounting hole on the outer flange of the end beam; a process groove for installing bolts or nuts is formed in the precast concrete at the position corresponding to the installation hole on the outer flange of the end beam; the two ends of the cross beam are provided with T-shaped beam supports and connecting plates for connecting peripheral steel beams, and bolt holes are formed in the T-shaped beam supports and the connecting plates; the fabricated steel reinforced concrete shear wall structure further comprises an L-shaped connecting piece connected with the peripheral steel beams, and bolt holes are formed in the L-shaped connecting piece.
2. The fabricated steel reinforced concrete shear wall structure of claim 1, wherein the height of the poured pre-section is no greater than the thickness of the floor slab.
3. The fabricated steel reinforced concrete shear wall structure of claim 1, wherein the height of the protruding end of the column is 200mm to 600mm.
4. The fabricated steel reinforced concrete shear wall structure of claim 2, wherein the height of the connecting steel plate seat is 50 mm-150 mm.
5. The fabricated steel reinforced concrete shear wall structure of claim 2, wherein the precast concrete has a thickness greater than 50mm to 200mm of the cross-sectional width of the wider section steel of the cross-beam and the column.
6. A method of manufacturing a fabricated steel reinforced concrete shear wall structure according to any one of claims 1 to 5, comprising the steps of:
1) Welding a beam and a stand column made of profile steel into a steel frame in a factory, wherein one end of the steel frame is provided with an end beam, the outer side flange plate of the end beam is provided with a bolt mounting hole, and the other end of the stand column is provided with a connecting steel plate seat;
2) Placing the steel frame on a die table; fixing a horizontal steel bar, a vertical steel bar, an edge member stirrup and an edge member longitudinal bar on the steel frame; one end of the vertical steel bar is welded on an end beam rib plate at the end part of the steel frame, and the other end of the vertical steel bar is welded on the connecting steel plate seat rib plate;
3) Setting side dies, and setting pouring reserved sections at positions corresponding to each floor slab; pouring concrete, and vibrating while pouring;
4) And (5) curing the concrete after pouring is completed.
7. The method for manufacturing a fabricated steel reinforced concrete shear wall structure according to claim 6, wherein the step 1) further comprises welding stiffening ribs between column flanges in the beam column node area.
8. A method of installing a fabricated steel reinforced concrete shear wall structure as claimed in any one of claims 1 to 5, comprising the steps of:
1) Installing a next section of assembled steel reinforced concrete shear wall structure; the method comprises the steps of (1) using temporary support to fix, respectively connecting T-shaped beam supports and connecting plates at two ends of a beam of an assembled steel reinforced concrete shear wall structure with a lower flange and a web plate of a peripheral steel beam, and arranging an L-shaped connecting piece to be connected with an upper flange of the peripheral steel beam;
2) Installing each layer of horizontal floor slab in the next section of assembled steel reinforced concrete shear wall structure, and sequentially arranging each layer of horizontal floor slab reinforcing steel bars;
3) Pouring the laminated layer concrete of each layer of floor and pouring the reserved section;
4) Connecting the end cross beam between the upper section and the lower section of assembled steel reinforced concrete shear wall structure with the connecting steel plate seat, and connecting the connecting steel plate seat with the peripheral steel beam;
5) Setting horizontal distribution steel bars in the casting reserved section at the joint, and casting the casting reserved section at the joint;
6) Installing each layer of horizontal precast floor slabs in the assembled steel reinforced concrete shear wall structure, and arranging horizontal floor slab reinforcing steel bars;
7) Pouring concrete to fill the floor slab;
and (3) repeating the steps 1) to 7) until all the layers of assembled steel reinforced concrete shear wall structures are installed.
9. The method for installing the fabricated steel reinforced concrete shear wall structure according to claim 8, wherein the T-shaped beam brackets, the connecting plates and the L-shaped connecting pieces at the two ends of the cross beam are connected with the peripheral steel beams through high-strength bolts.
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