CN108005265B - Multilayer prefabricated steel reinforced concrete shear wall structure and preparation and construction methods thereof - Google Patents
Multilayer prefabricated steel reinforced concrete shear wall structure and preparation and construction methods thereof Download PDFInfo
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- CN108005265B CN108005265B CN201711379393.1A CN201711379393A CN108005265B CN 108005265 B CN108005265 B CN 108005265B CN 201711379393 A CN201711379393 A CN 201711379393A CN 108005265 B CN108005265 B CN 108005265B
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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
- 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
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/06—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres reinforced
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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
- 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
- E04C2/44—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose
- E04C2/46—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose specially adapted for making walls
Abstract
The invention discloses a multilayer prefabricated 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 multilayer prefabricated 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 multi-layer precast 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 a multilayer prefabricated 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 reserved sleeve, high-strength grouting material is required to be poured into the sleeve, and as the process is a hidden engineering and on-site operation worker, most of common farmers, the grouting construction quality of the reinforced concrete sleeve is difficult to guarantee, 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 a multilayer prefabricated 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:
a multilayer precast steel reinforced concrete shear wall structure comprises a reinforced bar structure and precast concrete; the steel bar structure comprises vertical steel bars which are horizontally distributed and horizontal steel bars which are longitudinally distributed; the height of the multilayer prefabricated steel reinforced concrete shear wall structure is higher than that of one layer; 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 left end part and the right end part of the horizontal steel bar are respectively welded on the outer side flange plates of the two upright posts; 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 precast concrete is arranged between the outer flanges of the two upright posts; the steel bar structure continuously passes through casting reserved sections among all layers of precast concrete; the outer side flanges of the end beams at the upper end or the lower end of the multilayer prefabricated steel reinforced concrete shear wall structure are provided with mounting holes; 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 steel plates, and bolt holes are formed in the T-shaped beam supports and the connecting steel plates; the multilayer prefabricated steel reinforced concrete shear wall structure further comprises an L-shaped connecting piece, 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 connecting steel plate seat is 50 mm-150 mm.
Further, the width of the inner flange of the upright post is 20 to 30mm smaller than the width of the outer flange, and the thickness of the precast concrete is the same as the width of the outer flange of the upright post.
The invention also provides a preparation method of the multilayer prefabricated steel reinforced concrete shear wall structure, which comprises the following steps:
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 horizontal steel bars and vertical steel bars on the steel frame; respectively welding two ends of a horizontal steel bar on the outer side flange plates of the two upright posts, welding one end of a vertical steel bar on an end beam rib plate at the end part of the steel frame, and welding the other end of the vertical steel bar on the connecting steel plate seat rib plate;
3) A pouring reserved section is arranged at the position corresponding to each floor slab; pouring concrete between the two upright posts, and vibrating while pouring;
4) And (5) curing the concrete after pouring is completed.
Further, the method also comprises the following steps:
and the step 1) further comprises welding stiffening ribs between the column flanges of the beam column node area.
Further, in the step 1), the method further comprises welding a beam T-shaped beam support and a connecting steel plate at two ends of the beam, and processing an L-shaped connecting piece.
The invention also discloses a construction method of the multilayer prefabricated steel reinforced concrete shear wall structure, which comprises the following steps:
1) Installing a next layer of multilayer prefabricated 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 cross beam of a multi-layer precast steel reinforced concrete shear wall structure with a lower flange of a peripheral steel beam and a web plate, 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 layer of multilayer prefabricated 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 layer of multilayer prefabricated steel reinforced concrete shear wall structure and the lower layer of multilayer prefabricated 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 multilayer precast 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 layers of the multilayer prefabricated steel reinforced concrete shear wall structure are installed.
Further, the cross beam and the L-shaped connecting piece are connected with the peripheral steel beam 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 reinforced concrete shear wall structure has good earthquake resistance, can be suitable for high-intensity areas, and has large structure application height.
Drawings
FIG. 1 is a schematic structural view of a multi-layer precast steel reinforced concrete shear wall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the multi-layer precast 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 a multi-layer precast steel reinforced concrete shear wall structure.
In the figure: 1. a cross beam; 2. a column; 3. horizontal steel bars; 4. vertical steel bars; 5. connecting a steel plate seat; 6. T-shaped beam support; 7. concrete; 8. a connecting plate; 9. an L-shaped connecting plate; 10. t-shaped connecting bottom corners; 11. 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 multi-layer precast steel reinforced concrete shear wall structure in the present embodiment includes a concrete 7 and a reinforcing steel structure. When pouring, the concrete 7 of the whole shear wall is not poured into a whole; but rather casting in segments. The position of the concrete 7 corresponding to the 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 is cast with the floor slab and the precast steel reinforced concrete shear wall on site, so that the structural strength and the integrity of the building are improved. The concrete 7 does not cover the outer side flange plates of the two upright posts 2, and the flange plates at the outer sides of the two upright posts 2 are used as frames.
The width of the inner flange of the upright post is 20-30 mm smaller than that of the outer flange, so that the horizontal steel bars 3 can be conveniently distributed.
As shown in fig. 2 to 4, the reinforcing structure includes vertical reinforcing bars 4 horizontally distributed and horizontal reinforcing bars 3 longitudinally distributed. 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 cross beams 1 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 4 penetrating up and down can improve the strength and the integrity of the multilayer prefabricated steel reinforced concrete shear wall structure. Connecting structures are arranged in casting reserved sections at the upper end and the lower end of the multilayer prefabricated 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 multilayer prefabricated 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 1 and the upright post 2; the strength of the steel frame is improved.
The bottom of the connecting steel plate seat 5 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 4; the vertical steel bars 4 can be welded on the side surfaces of the steel plates of the auxiliary stiffening ribs, and the force of the vertical steel bars 4 is transmitted to the connecting steel plate seat.
T-shaped beam supports 6 are welded on the upright posts 2 and are used for supporting the peripheral cross beams during hoisting. Bolt holes are formed in the top plate of the T-shaped beam support 6, and the T-shaped beam support 6 is fixedly connected with the lower flange of the peripheral beam through bolts.
An L-shaped connecting plate 9 can also be arranged, the bottom plate and the side plates of the L-shaped connecting plate 9 are both provided with bolt holes, and the L-shaped connecting plate 9 is fixedly connected with the upright posts 2 and the upper flanges of the peripheral cross beams through bolts. Stiffening ribs can be arranged between the bottom plate and the side plate of the L-shaped connecting plate 9, so that the connecting strength is improved.
The connecting plate 8 can be welded at the position between the upper flange and the lower flange of the peripheral beam on the upright post 2, and the connecting plate 8 is fixedly connected with the web plate of the peripheral beam by bolts.
The two ends of the steel plate seat 5 are connected, and the bottom end part of the upright post 2 can be welded with a T-shaped connecting bottom corner 10. The T-shaped connecting bottom corner 10 is fixedly connected with the upper flange of the peripheral beam through bolts.
The web height of the cross beam 1 is as consistent as possible with the web height of the peripheral cross beam. Stiffening ribs are welded between the left flange and the right flange of the upright post, and the positions corresponding to the upper flange plate and the lower flange plate of the cross beam 1; the supporting strength of the upright post 2 is improved.
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 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 multilayer prefabricated 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 lower end part is welded and connected with a steel plate seat 5 and a T-shaped connecting bottom corner 10; welding a T-shaped beam support 6 and a connecting plate 8 on the side surface of the upright post 2; if necessary, a stiffening rib can be welded between the flanges of the beam column joint area;
2) Pouring a concrete outer blade (not shown in the figure), arranging a heat-insulating connecting piece (not shown in the figure) on the concrete outer blade, and curing;
3) After the curing of the concrete outer blade is completed, 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 3 and a vertical steel bar 4 on a steel frame; respectively welding two ends of a horizontal steel bar 3 on outer side flange plates of two upright posts 2, welding the upper end of a vertical steel bar 4 on an end cross beam rib plate, and welding the lower end of the vertical steel bar 4 on a connecting steel plate seat 5 rib plate;
5) A pouring reserved section is arranged at the position corresponding to each floor slab; pouring concrete between the two upright posts 2 by taking the two inner side flange plates as side molds, 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 concrete 7 formed by casting and is used for casting in situ. Precast concrete segments 7 surround the steel frame segments.
The end cross member may be disposed below, and the connection steel plate holder 5 may be disposed above.
As shown in fig. 5, after the multi-layer precast 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 T-shaped beam supports 6 and the connecting plates 8 at the two ends of the cross beam 1 of the multi-layer precast steel reinforced concrete shear wall structure are respectively connected with the lower flanges and the web plates of the peripheral steel beams 11 by using temporary supports, and the L-shaped connecting pieces 9 are respectively connected with the upper flanges of the peripheral steel beams 11 and the connecting steel plate seats 5;
2) Installing each layer of horizontal floor slab in the multilayer prefabricated 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 shear wall structure B and pouring a reserved section;
4) The steel plate fixing seat 5 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, and the connecting steel plate seat is connected with the peripheral steel beam 11;
5) Setting horizontal distribution steel bars in the casting reserved section at the joint, and casting the casting reserved section at the joint;
6) The horizontal precast floor slabs of the upper shear wall structure A are installed, and horizontal floor slab reinforcing steel bars are sequentially arranged;
7) Pouring concrete to fill the floor slab;
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 peripheral steel frame columns adopt hot rolled H-shaped steel, so that the hot rolled H-shaped steel is conveniently connected with the steel beam through full bolts; the thickness of the peripheral steel frame columns is the same as that of the shear wall, the out-of-plane bending resistance bearing capacity of the shear wall is stronger, and the connection with the steel beam is more convenient. The web plate of the peripheral steel frame upright post, the inner side flange and the inner side of the outer side flange are coated in concrete, so that the area of anticorrosion fireproof coating is greatly reduced, and the cost of anticorrosion coating is saved. The outer side of the outer side flange of the peripheral steel frame upright post is exposed outside the concrete, so that the peripheral steel frame upright post is convenient to connect with a peripheral steel beam. 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 for connecting the upper section of prefabricated shear wall is connected with the peripheral steel frame of the lower section of prefabricated shear wall through 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 upper section of the prefabricated shear wall plays a role in connecting the upper and lower prefabricated shear walls and 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 peripheral steel frame can play a role in bearing a framework during installation, connecting pieces connected with the upper layer of installation units and the peripheral steel beams 11, can restrain concrete, bear load together with reinforced concrete parts, has higher structural bearing capacity and better anti-seismic performance, and can be suitable for areas with high earthquake intensity.
The invention relates to a multilayer prefabricated steel reinforced concrete shear wall structure and a preparation and construction method thereof, which comprises the following steps:
(1) The factory prefabrication degree is high, and the field wet operation is few. The multi-layer precast steel reinforced concrete shear wall structure is integrally precast in a factory by taking the heights of a plurality of structural layers as an installation unit.
(2) And (5) assembling construction. The multi-layer precast steel reinforced concrete shear wall structure, the steel beam and the upper multi-layer precast steel reinforced concrete shear wall structure adopt a full-bolt connection mode, and the site construction speed is high.
(3) Good anti-corrosion and fireproof performance and low cost. Most of steel structure parts in the multilayer prefabricated steel reinforced concrete shear wall structure are coated in concrete, so that the steel reinforced concrete shear wall structure has good corrosion and fire resistance and greatly reduces corrosion and fire resistance cost.
(4) Structure, enclosure, heat preservation and decoration. The multilayer prefabricated 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 multilayer prefabricated 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. A multilayer precast steel reinforced concrete shear wall structure comprises a reinforced bar structure and precast concrete; the steel bar structure comprises vertical steel bars which are horizontally distributed and horizontal steel bars which are longitudinally distributed; the multi-layer prefabricated steel reinforced concrete shear wall structure is characterized in that the height of the multi-layer prefabricated steel reinforced concrete shear wall structure is higher than that of one layer; 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 left end part and the right end part of the horizontal steel bar are respectively welded on the outer side flange plates of the two upright posts; 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 precast concrete is arranged between the outer flanges of the two upright posts; the steel bar structure continuously passes through casting reserved sections among all layers of precast concrete; the outer side flanges of the end beams at the upper end or the lower end of the multilayer prefabricated steel reinforced concrete shear wall structure are provided with mounting holes; 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 steel plates, and bolt holes are formed in the T-shaped beam supports and the connecting steel plates; the multilayer prefabricated steel reinforced concrete shear wall structure further comprises an L-shaped connecting piece, and bolt holes are formed in the L-shaped connecting piece.
2. The multi-layer precast steel reinforced concrete shear wall structure of claim 1, wherein the height of the casting reserve is not greater than the thickness of the floor slab.
3. The multi-layer precast steel reinforced concrete shear wall structure of claim 2, wherein the height of the connecting steel plate seat is 50 mm-150 mm.
4. The multi-layered precast steel reinforced concrete shear wall structure of claim 2, wherein the inner flange width of the column is 20 to 30mm smaller than the outer flange width, and the precast concrete has the same thickness as the outer flange width of the column.
5. A method of making a multi-layered precast steel reinforced concrete shear wall structure according to any one of claims 1 to 4, 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 horizontal steel bars and vertical steel bars on the steel frame; respectively welding two ends of a horizontal steel bar on the outer side flange plates of the two upright posts, welding one end of a vertical steel bar on an end beam rib plate at the end part of the steel frame, and welding the other end of the vertical steel bar on the connecting steel plate seat rib plate;
3) A pouring reserved section is arranged at the position corresponding to each floor slab; pouring concrete between the two upright posts, and vibrating while pouring;
4) And (5) curing the concrete after pouring is completed.
6. The method for manufacturing a multi-layer precast steel reinforced concrete shear wall structure according to claim 5, wherein the step 1) further comprises welding stiffening ribs between column flanges in a beam column node area.
7. The method for manufacturing a multi-layer precast steel reinforced concrete shear wall structure according to claim 5, wherein the step 1) further comprises welding beam fixing bases and connecting steel plates at two ends of the beams, and machining L-shaped connecting pieces.
8. The construction method of the multilayer prefabricated steel reinforced concrete shear wall structure according to any one of claims 1 to 4, comprising the following steps:
1) Installing a next layer of multilayer prefabricated 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 cross beam of a multi-layer precast 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 the connecting steel plate seat;
2) Installing each layer of horizontal floor slab in the next layer of multilayer prefabricated 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 layer of multilayer prefabricated steel reinforced concrete shear wall structure and the lower layer of multilayer prefabricated 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 multilayer precast 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 layers of the multilayer prefabricated steel reinforced concrete shear wall structure are installed.
9. The construction method of the multilayer prefabricated 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711379393.1A CN108005265B (en) | 2017-12-20 | 2017-12-20 | Multilayer prefabricated steel reinforced concrete shear wall structure and preparation and construction methods thereof |
Applications Claiming Priority (1)
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| CN108532795A (en) * | 2018-07-11 | 2018-09-14 | 上海应用技术大学 | The vertical rigid connection node of assembly concrete shear wall structure and construction method |
| CN109138167A (en) * | 2018-07-23 | 2019-01-04 | 同济大学 | A kind of construction method of the adjustable removable concrete shear force wall of bearing capacity |
| CN109853850A (en) * | 2018-12-14 | 2019-06-07 | 杭萧钢构股份有限公司 | A kind of assembled architecture steel-structure box steel column and preparation method thereof |
| CN109386091A (en) * | 2018-12-14 | 2019-02-26 | 苏州光彩建筑钢品有限公司 | A kind of crossbeam of the integrated fashioned iron class house convenient for construction |
| CN109653403A (en) * | 2019-01-15 | 2019-04-19 | 中国五冶集团有限公司 | Column plate concrete combined type shear wall and its construction method |
| CN111155680A (en) * | 2019-12-30 | 2020-05-15 | 中冶建筑研究总院有限公司 | All-bolt connection multilayer prefabricated section steel concrete shear wall structure and preparation and construction method thereof |
| CN111155681B (en) * | 2019-12-30 | 2022-02-22 | 中冶建筑研究总院有限公司 | Steel concrete composite connection multilayer prefabricated section steel concrete shear wall structure and preparation and construction method thereof |
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| CA2867964C (en) * | 2014-10-16 | 2016-04-12 | Emin Buzimkic | Prefabricated modular rebar modules and methods of using the same |
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| CN107090925B (en) * | 2017-05-12 | 2023-10-24 | 姚攀峰 | Reinforced precast reinforced concrete shear wall, structural system and construction method thereof |
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