CN110093997B - Prefabricated sandwich heat-insulation composite concrete shear wall and preparation method and application thereof - Google Patents
Prefabricated sandwich heat-insulation composite concrete shear wall and preparation method and application thereof Download PDFInfo
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- CN110093997B CN110093997B CN201910399766.4A CN201910399766A CN110093997B CN 110093997 B CN110093997 B CN 110093997B CN 201910399766 A CN201910399766 A CN 201910399766A CN 110093997 B CN110093997 B CN 110093997B
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- 239000004567 concrete Substances 0.000 title claims abstract description 107
- 238000009413 insulation Methods 0.000 title claims abstract description 36
- 239000002131 composite material Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 128
- 239000010959 steel Substances 0.000 claims abstract description 128
- 239000011178 precast concrete Substances 0.000 claims abstract description 46
- 238000004321 preservation Methods 0.000 claims abstract description 27
- 238000009826 distribution Methods 0.000 claims abstract description 12
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 33
- 230000003014 reinforcing effect Effects 0.000 claims description 26
- 238000010276 construction Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 229920006327 polystyrene foam Polymers 0.000 claims description 3
- 229920002748 Basalt fiber Polymers 0.000 claims description 2
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
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- 238000009417 prefabrication Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing 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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- 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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Abstract
The invention belongs to the technical field of concrete shear walls, and particularly relates to a prefabricated sandwich heat-insulation composite concrete shear wall and a preparation method and application thereof. The concrete shear wall includes: the prefabricated concrete wall plate comprises a prefabricated concrete wall plate, vertical steel bars in the wall, transverse distribution steel bars in the wall plate, steel plates, web member steel bars, lower chord steel bars, vertical support bars, transverse support bars, post-cast concrete and a heat insulation layer; the precast concrete wallboard consists of an outer leaf precast concrete wallboard and an inner leaf precast concrete wallboard; the vertical steel bars in the wall, the transversely distributed steel bars in the wall plate, the steel plates, the web member steel bars, the lower chord steel bars, the support vertical steel bars and the support transverse steel bars jointly form a steel bar triangular truss floor bearing plate; the prefabricated concrete wallboard of outer leaf, heat preservation, steel bar triangle truss floor carrier plate and interior leaf prefabricated concrete wallboard connect gradually, the space between the steel bar triangle truss floor carrier plate forms the region that is used for post-cast concrete. The shear wall can ensure that the mold expansion phenomenon does not occur when the middle cavity concrete is poured.
Description
Technical Field
The invention belongs to the technical field of concrete shear walls, and particularly relates to a prefabricated sandwich heat-insulation composite concrete shear wall and a preparation method and application thereof.
Background
This information disclosed in this background of the invention is only for the purpose of increasing an understanding of the general background of the invention and is not necessarily to be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
The existing concrete shear wall outer wall mainly comprises a cast-in-place concrete shear wall, a precast concrete shear wall and a precast superposed shear wall, and in order to meet the building energy-saving requirement, a heat-insulating layer is required to be arranged. Wherein, cast in situ concrete shear force wall and exempt from to tear open template heated board: the shear wall is formed by erecting a formwork on site and then pouring concrete. However, the inventors believe that: the outer wall has the advantages of more field wet operation, larger pollution, more labor consumption, need of erecting a large number of templates and longer construction period.
The existing precast concrete shear wall outer wall: the shear wall outer wall comprises a prefabricated wall plate, an insulating layer and a post-cast edge restraining component or a connecting part. Compared with a cast-in-place concrete wall, the prefabricated wall plate has the advantages that the construction speed is increased, cost is reduced, and the requirement of sustainable development is met. However, the inventors believe that: prefabricated wallboard is from great, and transportation and installation cost are higher, and steel bar sleeve connects the quality and is difficult to guarantee.
The existing prefabricated superposed shear wall outer wall: the shear wall outer wall comprises an inner wall plate, a steel bar truss, an insulating layer and an outer wall plate. The prefabricated superposed shear wall combines the advantages of a cast-in-place concrete wall and a prefabricated wall panel. However, the inventors believe that: the wallboard is difficult to produce and manufacture, needs a large-scale turnover machine, and has low production efficiency, small capacity, large section size of the heat-insulation connecting piece, long length and high cost.
Disclosure of Invention
Aiming at the problems in the prior art and the problem that the existing prefabricated sandwich heat-insulation composite concrete shear wall is easy to expand when concrete is poured in situ, the invention aims to provide the prefabricated sandwich heat-insulation composite concrete shear wall and the preparation method and the application thereof. The shear wall prepared by the method not only has good heat preservation performance, but also can obviously improve the overall performance of the wall plate by only pouring the concrete of the middle cavity on site, and can ensure that the mold expansion phenomenon does not occur when pouring the concrete of the middle cavity due to the existence of the steel bar triangular truss floor bearing plate.
The invention aims to provide a prefabricated sandwich heat-preservation composite concrete shear wall.
The second purpose of the invention is to provide a preparation method of the prefabricated sandwich heat-preservation composite concrete shear wall.
The third purpose of the invention is to provide the prefabricated sandwich heat-preservation laminated concrete shear wall and the application of the preparation method thereof
In order to realize the purpose, the invention discloses the following technical scheme:
firstly, the invention discloses a prefabricated sandwich heat-preservation composite concrete shear wall, which comprises: the prefabricated concrete wallboard comprises a prefabricated concrete wallboard, vertical steel bars in the wallboard, transversely distributed steel bars in the wallboard, steel plates, web member steel bars, lower chord steel bars, vertical support bars, horizontal support bars, post-cast concrete and a heat preservation layer.
The precast concrete wallboard comprises an outer leaf precast concrete wallboard and an inner leaf precast concrete wallboard. Vertical reinforcing bar in the wallboard, horizontal distribution reinforcing bar, steel sheet, web member reinforcing bar, last quarter reinforcing bar, support are erected muscle and the horizontal muscle of support and are constituteed reinforcing bar triangle truss building carrier plate jointly in the wallboard.
The structure of steel bar triangular truss floor bearing plate is: a plurality of transverse distribution reinforcing steel bars in the wall board are vertically connected to vertical reinforcing steel bars in a wall to form a reinforcing steel bar mesh, the transverse distribution reinforcing steel bars in the wall board are distributed in parallel, and the reinforcing steel bar mesh is positioned in the inner leaf precast concrete wall board; the two groups of the lower chord steel bars are arranged, the vertical steel bars in the wall are positioned right below the middle of the two groups of the lower chord steel bars, the web member steel bars are composed of first web members, second web members and circular arcs, one ends of the first web members and one ends of the second web members are respectively connected with two ends of the circular arcs one by one to form an inverted V-shaped structure, and the circular surface where the circular arcs are located is vertical to the plane formed by the first web members and the second web members; the other ends of the first web member and the second web member are fixed on vertical steel bars in the wall, and the circular arc is fixed with the lower chord steel bar; a plurality of groups of web member reinforcing steel bars are sequentially distributed between the vertical reinforcing steel bars and the lower chord reinforcing steel bars in the wall; the steel plate covers the upper part of the lower chord steel bar, and the steel plate is fixedly attached to the circular arc; the support vertical ribs are arranged perpendicular to the steel plate, one ends of the support vertical ribs are connected with the vertical steel bars in the wall, the other ends of the support vertical ribs are connected with the support transverse ribs, the support transverse ribs are arranged parallel to the steel plate, the edges of the steel plate are fixed on the support transverse ribs, and two ends of the lower chord steel bars are fixed on the support transverse ribs on two sides of the lower chord steel bars; the heat preservation sets up between outer leaf precast concrete wallboard and steel sheet, the space between the steel bar triangular truss floor carrier plate forms the region that is used for post-cast concrete.
As a further technical scheme, the concrete shear wall further comprises a heat-insulation plate connecting piece, and the outer leaf precast concrete wall plate is connected with the heat-insulation layer through the heat-insulation connecting piece.
As a further technical scheme, the prefabricated concrete wall panel with the outer leaves is also provided with a reinforcing mesh formed by vertically connecting transversely distributed reinforcing steel bars in the wall panel to vertical reinforcing steel bars in the wall, and one end of the heat-insulating connecting piece penetrates through the steel plate and the heat-insulating layer and then is fixed on the reinforcing steel bars in the prefabricated concrete wall panel with the outer leaves, so that the prefabricated concrete wall panel with the outer leaves, the steel plate and the heat-insulating layer are tightly fixed together.
As a further technical scheme, the concrete shear wall further comprises a reinforcing connecting piece, and the reinforcing connecting piece is used for connecting the outer leaf precast concrete wall panel and the inner leaf precast concrete wall panel, so that the connection between the two wall panels is further reinforced. Optionally, the reinforcing connecting members are distributed in four groups, and the four groups are distributed at positions close to four corners of the wall board.
As a further technical scheme, the concrete grade of the precast concrete wallboard is not lower than C30.
As a further technical solution, the heat insulation layer comprises: polystyrene foam board (EPS), extruded polystyrene board (XPS) and the like.
As a further technical solution, the insulation board connecting member includes: non-metallic connectors or stainless steel connectors. Optionally, the non-metallic connector comprises: one of a glass fiber reinforced connector (GFRP connector), a basalt fiber composite connector (BFRP connector), a carbon fiber composite connector (CFRP connector), and the like.
As a further technical solution, the reinforcing member includes: any one of stainless steel connecting pieces, hafen embedded pieces, FRP and the like.
As a further technical scheme, at least two groups of steel bar triangular trusses distributed in parallel are arranged in each group of prefabricated sandwich heat-insulation composite concrete shear wall, and the steel bar triangular trusses and the steel bar triangular truss floor bearing plates are different in that the steel bar triangular trusses do not comprise steel plates.
The invention further discloses a preparation method of the prefabricated sandwich heat-preservation composite concrete shear wall, which comprises the following steps:
(1) firstly, pouring an inner-leaf precast concrete wallboard, and then connecting the steel bar triangular truss floor bearing plate with the inner-leaf precast concrete wallboard before concrete is not solidified;
(2) and connecting the heat-insulating layer with the steel bar triangular truss floor bearing plate, and finally pouring the outer prefabricated concrete wall plate to be connected with the heat-insulating layer to form the whole prefabricated sandwich heat-insulating superposed concrete shear wall.
Finally, the invention discloses the application of the prefabricated sandwich heat-insulating superimposed concrete shear wall and the preparation method thereof in the field of buildings.
Compared with the prior art, the invention has the following beneficial effects:
(1) the prefabricated sandwich heat-insulation laminated concrete shear wall provided by the invention can obviously improve the construction efficiency, and because the construction site of the laminated shear wall mainly carries out concrete pouring operation in a cavity, the steel bar triangular truss floor bearing plate, the heat-insulation connecting piece and the cast-in-place concrete are connected together, and then the prefabricated shear wall is reliably connected with the inner leaf prefabricated concrete wallboard and the outer leaf prefabricated concrete wallboard, only a small amount of wet operation is needed, a template and a scaffold are not needed, and the assembling operation can be simultaneously carried out by a plurality of workers in a matching way, so that the construction efficiency of the shear wall is greatly improved; meanwhile, the prefabrication process can also save resources to a greater extent.
(2) The laminated concrete shear wall prepared by the invention can meet the requirements of bearing capacity and heat preservation, and because the steel bar triangular truss floor bearing plate is added, the steel plate and the inner leaf precast concrete wall plate are connected into a whole to bear horizontal force together through the steel bar truss, the web member steel bar (oblique steel bar) of the steel bar truss is not only a connecting piece (a pulling piece) of the steel plate and the inner leaf wall plate, but also can bear horizontal thrust generated by cast-in-place concrete in the cavity, and can ensure that the out-of-plane deformation of the thin steel plate and the inner leaf wall plate is very small, the mold expansion phenomenon can not occur, and the integrity of the laminated concrete shear wall is effectively improved. The composite steel bar triangular truss floor support plate is fully combined with the composition and stress characteristics of the steel bar triangular truss floor support plate, is used for the superposed concrete shear wall, effectively solves the problem of mold expansion, reduces the section size and length of a heat-insulating connecting piece, does not need a turnover machine in factory manufacture, greatly improves the production efficiency and capacity, reduces the cost and enhances the structural integrity.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic structural diagram of a prefabricated sandwich thermal insulation laminated concrete shear wall in embodiment 1 of the invention.
Fig. 2 is a schematic structural view of a steel bar triangular truss floor deck in embodiment 1 of the present invention.
Fig. 3 is a top view of the rebar triangular truss floor deck of fig. 2.
Fig. 4 is a schematic structural diagram of a prefabricated sandwich thermal insulation laminated concrete shear wall in embodiment 3 of the invention.
Fig. 5 is a schematic plan view of a prefabricated sandwich thermal insulation laminated concrete shear wall in embodiment 4 of the invention.
The labels in the figures represent: 1-precast concrete wall board, 2-vertical reinforcing steel bar in the wall, 3-transverse distribution reinforcing steel bar in the wall board, 4-steel plate, 5-web member reinforcing steel bar, 6-lower chord reinforcing steel bar, 7-support vertical reinforcing steel bar, 8-support transverse reinforcing steel bar, 9-heat insulation plate connecting piece, 10-post-cast concrete, 11-heat insulation layer, 12-reinforced connecting piece, 5.1-first web member, 5.2-second web member and 5.3-circular arc.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As described in the background art, the problems of complex process, low production efficiency, mold expansion during concrete casting in situ and the like still exist in the preparation of the existing concrete shear wall. Therefore, the invention provides a prefabricated sandwich heat-preservation laminated concrete shear wall and a preparation method thereof; the invention will now be further described with reference to the accompanying drawings and detailed description.
Example 1
A prefabricated sandwich insulation composite concrete shear wall, referring to fig. 1, comprising: precast concrete wallboard 1, vertical reinforcing bar 2 in the wall, horizontal distribution reinforcing bar 3 in the wallboard, steel sheet 4, web member reinforcing bar 5, lower chord reinforcing bar 6, support vertical reinforcement 7, support horizontal reinforcement 8, post-cast concrete 10 and heat preservation 11.
The precast concrete wallboard 1 consists of an outer leaf precast concrete wallboard and an inner leaf precast concrete wallboard. The steel bar triangular truss floor bearing plate is composed of vertical steel bars 2 in the wall, transversely distributed steel bars 3 in the wall plate, steel plates 4, web member steel bars 5, lower chord steel bars 6, vertical support bars 7 and horizontal support bars 8.
Referring to fig. 1 and 2, the structure of the steel bar triangular truss floor support plate is as follows: a plurality of transverse distribution reinforcing steel bars 3 in the wall board are vertically connected to a vertical reinforcing steel bar 2 in a wall to form a reinforcing steel bar mesh, the transverse distribution reinforcing steel bars 3 in the wall board are distributed in parallel, and the reinforcing steel bar mesh is positioned in the inner leaf precast concrete wall board (the inner leaf precast concrete wall board is the wall board far away from the heat preservation layer 11); the number of the lower chord steel bars 6 is two, the vertical steel bars 2 in the wall are positioned right below the middle of the two groups of the lower chord steel bars 6, the web member steel bars 5 are composed of first web members 5.1, second web members 5.2 and circular arcs 5.3, one ends of the first web members 5.1 and one ends of the second web members 5.2 are respectively connected with two ends of the circular arcs 5.3 one by one to form an inverted V-shaped structure, and the circular surface where the circular arcs 5.3 are located is vertical to the plane formed by the first web members 5.1 and the second web members 5.2; the other ends of the first web member 5.1 and the second web member 5.2 are fixed on the vertical steel bar 2 in the wall, and the circular arc 5.3 is fixed with the lower chord steel bar 6; a plurality of groups of web member reinforcing steel bars 5 are sequentially arranged between the vertical reinforcing steel bars 2 and the lower chord reinforcing steel bars 6 in the wall; the steel plate 4 covers the upper part of the lower chord steel bar 6, and the steel plate 4 is fixedly attached to the circular arc 5.3; the support vertical ribs 7 are arranged perpendicular to the steel plate 4, one ends of the support vertical ribs 7 are connected with the vertical steel bars 2 in the wall, the other ends of the support vertical ribs 7 are connected with the support transverse ribs 8, the support transverse ribs 8 are arranged in parallel to the steel plate 4, the edges of the steel plate 4 are fixed on the support transverse ribs 8, and two ends of the lower chord steel bars 6 are fixed on the support transverse ribs 8 on two sides of the lower chord steel bars; the heat preservation 11 sets up between outer leaf precast concrete wallboard and steel sheet 4, the space between the steel bar triangular truss floor carrier plate forms the region that is used for post-cast concrete 10.
Example 2
A prefabricated sandwich heat-preservation composite concrete shear wall is the same as the embodiment 1, and is characterized in that: the concrete shear wall further comprises a heat insulation plate connecting piece 9, and the outer leaf precast concrete wall plate and the heat insulation layer 11 are connected through the heat insulation plate connecting piece 9.
Example 3
A prefabricated sandwich heat-preservation composite concrete shear wall is the same as the embodiment 1, and is characterized in that: the prefabricated concrete wallboard of leaf also is provided with the reinforcing bar net (refer to fig. 3) that the horizontal distribution reinforcing bar 3 vertical connection formed in the wall on vertical reinforcement 2 in the wallboard, the one end of heated board connecting piece 9 is passed steel sheet 4 and heat preservation 11 after-fixing on vertical reinforcement 2 in the wall to closely fix outer leaf prefabricated concrete wallboard, steel sheet 4 and heat preservation 11 together.
Example 4
A prefabricated sandwich heat-preservation composite concrete shear wall is the same as the embodiment 1, and is characterized in that: referring to fig. 5, the concrete shear wall further includes reinforcing connecting members 12, the reinforcing connecting members 12 are used for connecting the outer prefabricated concrete wall panels and the inner prefabricated concrete wall panels, and the reinforcing connecting members 12 are distributed in four groups and are located near four corners of the wall panels, so that the connection between the two wall panels is further reinforced.
Example 5
A prefabricated sandwich heat-preservation composite concrete shear wall is the same as the embodiment 2, and is characterized in that: the insulating layer is a 11-bit polystyrene foam board; the insulation board connecting piece 9 is a stainless steel connecting piece.
Example 6
A prefabricated sandwich heat-preservation composite concrete shear wall is the same as the embodiment 2, and is characterized in that: the heat-insulating layer 11 is an extruded polystyrene board; the insulation board connecting piece 9 is a non-metal connecting piece.
Example 7
A prefabricated sandwich heat-preservation composite concrete shear wall is similar to embodiment 4, and is characterized in that: the reinforced connecting piece 12 is any one of a stainless steel connecting piece, a hafen embedded piece and FRP.
Example 8
A prefabricated sandwich heat-preservation composite concrete shear wall is the same as the embodiment 1, and is characterized in that: the concrete grade of the precast concrete wall panel 1 is not lower than C30.
Example 9
The preparation method of the prefabricated sandwich heat-insulation composite concrete shear wall in the embodiment 1 comprises the following steps:
(1) firstly, pouring an inner-leaf precast concrete wallboard, and then connecting the steel bar triangular truss floor bearing plate with the inner-leaf precast concrete wallboard before concrete is not solidified;
(2) and connecting the heat-insulating layer 11 and the heat-insulating plate connecting piece 9 with the steel bar triangular truss floor bearing plate, and finally pouring the outer prefabricated concrete wall plate to be connected with the heat-insulating layer to form the whole prefabricated sandwich heat-insulating laminated concrete shear wall.
Example 9
Another preparation method of the prefabricated sandwich heat-insulation composite concrete shear wall in the embodiment 1 comprises the following steps:
(1) firstly, pouring outer-leaf precast concrete wallboards, then connecting the outer-leaf precast concrete wallboards with the heat-insulating layer 11 and the heat-insulating board connecting piece 9, and connecting the triangular truss floor bearing plates with the heat-insulating layer 11 and the heat-insulating board connecting piece 9 after finishing the pouring;
(2) and then pouring the inner-leaf precast concrete wallboard to be connected with the steel bar triangular truss floor bearing plate to form the whole precast sandwich heat-preservation superposed concrete shear wall.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (13)
1. The utility model provides a prefabricated sandwich heat preservation coincide concrete shear force wall which characterized in that includes: the prefabricated concrete wall plate comprises a prefabricated concrete wall plate, vertical steel bars in the wall, transverse distribution steel bars in the wall plate, steel plates, web member steel bars, lower chord steel bars, vertical support bars, transverse support bars, post-cast concrete and a heat insulation layer;
the precast concrete wallboard consists of an outer leaf precast concrete wallboard and an inner leaf precast concrete wallboard;
the vertical steel bars in the wall, the transversely distributed steel bars in the wall plate, the steel plates, the web member steel bars, the lower chord steel bars, the support vertical steel bars and the support transverse steel bars jointly form a steel bar triangular truss floor bearing plate; wherein:
a plurality of transverse distribution reinforcing steel bars in the wall board are vertically connected to vertical reinforcing steel bars in a wall to form a reinforcing steel bar mesh, the transverse distribution reinforcing steel bars in the wall board are distributed in parallel, and the reinforcing steel bar mesh is positioned in the inner leaf precast concrete wall board; the two groups of the lower chord steel bars are arranged, and the vertical steel bars in the wall are positioned right below the middle of the two groups of the lower chord steel bars;
the web member steel bar is composed of a first web member, a second web member and an arc, one end of each of the first web member and the second web member is connected with two ends of the arc one by one to form an inverted V-shaped structure, and the circular surface where the arc is located is vertical to the plane formed by the first web member and the second web member; the other ends of the first web member and the second web member are fixed on vertical steel bars in the wall, and the circular arc is fixed with the lower chord steel bar;
a plurality of groups of web member reinforcing steel bars are sequentially distributed between the vertical reinforcing steel bars and the lower chord reinforcing steel bars in the wall; the steel plate covers the upper part of the lower chord steel bar, and the steel plate is fixedly attached to the circular arc; the support vertical ribs are arranged perpendicular to the steel plate, one ends of the support vertical ribs are connected with the vertical steel bars in the wall, the other ends of the support vertical ribs are connected with the support transverse ribs, the support transverse ribs are arranged parallel to the steel plate, the edges of the steel plate are fixed on the support transverse ribs, and two ends of the lower chord steel bars are fixed on the support transverse ribs on two sides of the lower chord steel bars;
the heat preservation sets up between outer leaf precast concrete wallboard and steel sheet, the space between the steel bar triangular truss floor carrier plate forms the region that is used for post-cast concrete.
2. The precast sandwich heat-insulating laminated concrete shear wall according to claim 1, further comprising heat-insulating plate connecting members, wherein the outer-leaf precast concrete wall panels are connected with the heat-insulating layers through the heat-insulating plate connecting members.
3. A prefabricated sandwich insulated laminated concrete shear wall according to claim 2, wherein said insulation board connectors comprise: non-metallic connectors or stainless steel connectors.
4. A prefabricated sandwich insulated laminated concrete shear wall according to claim 3, wherein said non-metallic connectors comprise: one of a glass fiber reinforced connector, a basalt fiber composite connector and a carbon fiber composite connector.
5. The precast sandwich heat-insulating laminated concrete shear wall as claimed in claim 1, wherein the outer prefabricated concrete wall panel is also provided with a reinforcing mesh formed by vertically connecting the transversely distributed reinforcing bars in the wall panel to the vertical reinforcing bars in the wall, and one end of the heat-insulating plate connecting piece passes through the steel plate and the heat-insulating layer and is fixed on the vertical reinforcing bars in the wall.
6. The precast sandwich insulation composite concrete shear wall of claim 1, further comprising a reinforcing connector for connecting the outer leaf precast concrete wall panel and the inner leaf precast concrete wall panel, so that the connection of the two wall panels is further reinforced.
7. A prefabricated sandwich insulated laminated concrete shear wall according to claim 6, wherein said reinforcing connectors are in four groups, distributed near the four corners of the wall panels.
8. A prefabricated sandwich insulated laminated concrete shear wall according to claim 6, wherein said reinforcing connectors comprise: any one of stainless steel connecting piece, hafen embedded piece and FRP.
9. The precast sandwich insulation laminated concrete shear wall of claim 1, wherein the insulation layer comprises: polystyrene foam board, extruded polystyrene board.
10. The precast sandwich insulation composite concrete shear wall of claim 1, wherein the precast concrete wall panel has a concrete grade of not less than C30.
11. A method of making a prefabricated sandwich insulated laminated concrete shear wall according to any one of claims 1 to 10, comprising the steps of:
(1) firstly, pouring an inner-leaf precast concrete wallboard, and then connecting the steel bar triangular truss floor bearing plate with the inner-leaf precast concrete wallboard before concrete is not solidified;
(2) and connecting the heat-insulating layer with the steel bar triangular truss floor bearing plate, and finally pouring the outer prefabricated concrete wall plate to be connected with the heat-insulating layer to form the whole prefabricated sandwich heat-insulating superposed concrete shear wall.
12. The method for preparing a prefabricated sandwich thermal-insulation composite concrete shear wall according to any one of claims 1 to 10,
(1) firstly, pouring outer-leaf precast concrete wallboards, then connecting the outer-leaf precast concrete wallboards with the heat-insulating layer, and then connecting the triangular truss floor bearing plate with the heat-insulating layer;
(2) and then pouring the inner-leaf precast concrete wallboard to be connected with the steel bar triangular truss floor bearing plate to form the whole precast sandwich heat-preservation superposed concrete shear wall.
13. Use of a prefabricated sandwich insulated laminated concrete shear wall according to any one of claims 1 to 10 in the field of construction.
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| CN110469001B (en) * | 2019-08-28 | 2024-02-23 | 广东省建筑设计研究院 | Superimposed shear wall and construction method thereof |
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| CN111236479B (en) * | 2020-03-18 | 2024-05-28 | 长春工程学院 | Sandwich external wall panel with air layer suitable for severe cold region |
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| CN115234071B (en) * | 2022-03-19 | 2024-04-19 | 北京工业大学 | Assembled type one-shaped composite wallboard self-tapping screw assembly and post-pouring strip combined connection structure and manufacturing method |
| CN115110664B (en) * | 2022-04-29 | 2023-05-12 | 宝胜系统集成科技股份有限公司 | ALC prefabricated shear wall and manufacturing method thereof |
| CN115897851B (en) * | 2023-03-14 | 2023-05-16 | 北京工业大学 | Assembled composite shear wall system |
| CN115949157B (en) * | 2023-03-14 | 2023-06-06 | 北京工业大学 | Assembled shear wall system and construction method |
| CN115928910B (en) * | 2023-03-14 | 2023-05-16 | 中铁建设集团北京工程有限公司 | Assembled shear wall system and construction method thereof |
| CN115977275B (en) * | 2023-03-14 | 2023-06-13 | 北京工业大学 | Prefabricated shear wall system and construction method thereof |
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