CN118166938A - A welded prefabricated concrete shear wall with edge components and its assembly structure - Google Patents
A welded prefabricated concrete shear wall with edge components and its assembly structure Download PDFInfo
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- CN118166938A CN118166938A CN202410505314.0A CN202410505314A CN118166938A CN 118166938 A CN118166938 A CN 118166938A CN 202410505314 A CN202410505314 A CN 202410505314A CN 118166938 A CN118166938 A CN 118166938A
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- prefabricated
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4157—Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional [3D] extent, e.g. lattice girders
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional [3D] extent, e.g. lattice girders
- E04C5/0636—Three-dimensional reinforcing mats composed of reinforcing elements laying in two or more parallel planes and connected by separate reinforcing parts
- E04C5/064—Three-dimensional reinforcing mats composed of reinforcing elements laying in two or more parallel planes and connected by separate reinforcing parts the reinforcing elements in each plane being formed by, or forming a, mat of longitunal and transverse bars
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
本发明公开了一种带边缘构件的焊装式预制混凝土剪力墙及其装配结构，其预制混凝土剪力墙包括钢筋骨架、中间预制墙板和两边的预制边缘构件，在两边的预制边缘构件的下方分别设有现浇缺口，现浇缺口处设有下连接钢筋，预制边缘构件的顶端设有上连接钢筋，在中间预制墙板的顶端和底端分别设有预留钢筋和装配孔。本发明的装配结构通过下层的预制混凝土剪力墙的上连接钢筋从联接位穿过并与上层的预制混凝土剪力墙的现浇缺口中的下连接钢筋相重合，然后对相重合部分进行焊接，最后浇筑混凝土进行连接，同时，本发明还将中间预制墙板通过预留钢筋与装配孔进行配合连接，这样的连接结构能保证上、下层的预制混凝土剪力墙的预制边缘构件的连接稳定、可靠。
The present invention discloses a welded precast concrete shear wall with edge components and its assembly structure. The precast concrete shear wall includes a steel frame, a middle precast wall panel and precast edge components on both sides. Cast-in-place notches are provided below the precast edge components on both sides, lower connecting steel bars are provided at the cast-in-place notches, upper connecting steel bars are provided at the top of the precast edge components, and reserved steel bars and assembly holes are provided at the top and bottom of the middle precast wall panel. The assembly structure of the present invention passes the upper connecting steel bars of the precast concrete shear wall of the lower layer through the connection position and overlaps with the lower connecting steel bars in the cast-in-place notch of the precast concrete shear wall of the upper layer, then welds the overlapped parts, and finally pours concrete for connection. At the same time, the present invention also connects the middle precast wall panel with the assembly hole through the reserved steel bars. Such a connection structure can ensure that the precast edge components of the precast concrete shear walls of the upper and lower layers are connected stably and reliably.
Description
Technical Field
The invention relates to the technical field of assembly type buildings, in particular to a welded precast concrete shear wall with edge components and an assembly structure thereof.
Background
In recent years, the strategic goal of 'building industrialization is developed greatly' in China, and the prefabricated assembled building can change the problems of low construction speed, difficult quality control, high production cost, high energy consumption pollution and the like in the traditional building industry, so that the prefabricated assembled building becomes an important grip for novel building industrialization, and particularly the prefabricated concrete shear wall structure has the advantages of higher bearing capacity and lateral rigidity, high factory manufacturing quality, fast field installation progress, energy consumption reduction, resource conservation and the like in combination with the prefabricated building, so that the prefabricated assembled shear wall structure is an ideal structural form of a high-rise residential building, and research on the structural performance of the prefabricated concrete shear wall also becomes the focus of attention of a plurality of students.
The 4.0.3 th piece of the current national standard "evaluation Standard for fabricated buildings" (GB/T51129-2017) specifies that post-cast concrete at the connecting portion between vertical members of a main body structure can be calculated into the requirement of precast concrete volume calculation when the width of a cast segment meets certain requirements. Under the influence of the regulations, most of the domestic projects currently meet the evaluation requirement of the fabricated building, and the abnormal phenomenon that the wall plates are prefabricated for score is caused by adopting a combined mode that edge members are cast in situ and middle wall plates are prefabricated. The method not only leaves the original purpose of popularizing the assembled building, but also causes a great deal of waste of resources, and is an unbearable method.
Moreover, the reinforcement of the cast-in-place edge member requires site binding and pouring, and requires a large number of templates, labor and site wet work.
Therefore, in order to better advance the development of the fabricated building, the precast concrete shear wall with the edge member and the assembly structure thereof are designed.
The precast concrete shear wall system has horizontal and vertical joints, and the connection mode of the joints is an important factor affecting the overall structural performance, so that the design of the precast concrete shear wall with the edge components also needs to consider the influence of the connection mode.
At present, in actual engineering, the vertical connection mode commonly used by precast concrete shear walls mainly comprises: grouting sleeve connection, constraint slurry anchor connection, extrusion sleeve connection, ring rib buckling anchor connection, bolt connection and other modes, but the following defects exist in the connection modes:
1. Grouting sleeve connection, constraint slurry anchor connection, extrusion sleeve connection and the like belong to dark connection, the construction quality is greatly influenced by the construction level of workers, the construction error fault tolerance rate is low, and the construction quality is not easy to guarantee; the manufacturing cost is high, and the engineering cost is easy to increase;
2. the problems of large field workload, slow construction progress and the like exist in connection such as bolting and the like, the construction quality can directly influence the seismic performance of the wall body, and the engineering quality is difficult to guarantee.
Disclosure of Invention
A first object of the present invention is to provide a welded precast concrete shear wall with edge members.
The second object of the invention is to provide an assembly structure of the welded precast concrete shear wall with the edge member.
The invention realizes the simultaneous prefabrication of the edge components, can reduce the workload of the site and quicken the construction speed, and the precast concrete shear wall with the edge components can be assembled stably and reliably.
The first object of the present invention is achieved by the following technical scheme:
The utility model provides a take welding formula precast concrete shear force wall of edge component which characterized in that: the prefabricated wall comprises a reinforcement framework, a middle prefabricated wall plate and prefabricated edge components on two sides, wherein the middle prefabricated wall plate and the prefabricated edge components on two sides are prefabricated together, the inner reinforcement framework connects the middle prefabricated wall plate and the prefabricated edge components on two sides into a whole, cast-in-situ gaps are respectively arranged below the prefabricated edge components on two sides, part of reinforcement of the reinforcement framework extends into the cast-in-situ gaps, the reinforcement extending into the cast-in-situ gaps comprises vertical downward lower connecting reinforcement, part of reinforcement of the reinforcement framework extends upwards from the top end of the prefabricated edge components, the reinforcement extending upwards from the top end of the prefabricated edge components comprises vertical upward upper connecting reinforcement, the upper connecting reinforcement of the precast concrete shear wall on the lower layer is used for being welded with the lower connecting reinforcement of the precast concrete shear wall on the upper layer, at least one upward extending reserved reinforcement is arranged at the top end of the middle prefabricated wall plate, at least one assembly hole is arranged at the position of the bottom end of the middle prefabricated wall plate corresponding to the reserved reinforcement, and a grouting hole communicated with the assembly hole is arranged on the side surface of the middle prefabricated wall plate.
Further, the bottom ends of the prefabricated edge components on the two sides are higher than the bottom ends of the middle prefabricated wall plate, so that cast-in-situ gaps are respectively formed below the prefabricated edge components on the two sides.
Further, the upper connecting steel bars and the lower connecting steel bars are all linear steel bars.
Further, the reserved steel bars are straight steel bars, and the lower ends of the reserved steel bars are buried in the middle prefabricated wallboard vertically downwards.
Further, the prefabricated edge member is a straight edge member, or an L-shaped edge member, or a T-shaped edge member.
Further, the prefabricated edge components are further provided with side vertical connecting structures, and the side vertical connecting structures are also used for connecting the prefabricated edge components of the upper layer and the lower layer of prefabricated concrete shear wall.
Further, part of the steel bars of the steel bar framework extend upwards from the top end of the middle prefabricated wallboard, and the steel bars extending upwards from the top end of the middle prefabricated wallboard are used for anchoring with the laminated slab cast-in-situ layer or the cast-in-situ hidden beam at the storey. .
Further, the height of the cast-in-situ notch is 300-400 mm.
The second object of the invention is achieved by the following technical scheme:
The assembly structure of precast concrete shear wall, its characterized in that: a floor slab interval is arranged between the top end of the lower precast concrete shear wall and the bottom end of the upper precast concrete shear wall to form a connecting position, upper connecting steel bars of the lower precast concrete shear wall pass through the connecting position and are overlapped with lower connecting steel bars in a cast-in-place gap of the upper precast concrete shear wall, the part where the upper connecting steel bars and the lower connecting steel bars are overlapped is welded, and concrete is cast in situ in the cast-in-place gap; meanwhile, reserved steel bars of the precast concrete shear wall of the lower layer penetrate through the connecting positions and are inserted into the assembly holes of the precast concrete shear wall of the upper layer, and self-compaction concrete is poured into the assembly holes from the grouting holes.
Compared with the prior art, the invention has the following beneficial effects:
1. The precast concrete shear wall provided by the invention is provided with the precast edge components, and the precast edge components and the middle precast wallboard are precast together, so that binding and pouring of the edge components are not needed during site construction, the site workload can be reduced, and the construction speed is increased.
2. The invention relates to a prefabricated concrete shear wall, which is characterized in that a cast-in-situ notch and a lower connecting steel bar are arranged at the bottom end of a prefabricated edge component, and an upper connecting steel bar is arranged at the top end of the prefabricated edge component.
3. The connection between the upper connecting steel bar and the lower connecting steel bar is not dark any more, the connection position is positioned in the cast-in-situ notch, the connection position is clearly visible in the assembly process, and the construction quality can be better ensured.
Drawings
FIG. 1 is a schematic perspective view of a precast concrete shear wall according to a first embodiment of the present invention;
FIG. 2 is a schematic elevation view of a precast concrete shear wall according to a first embodiment of the present invention;
FIG. 3 is a schematic view of reinforcement of a precast concrete shear wall according to an embodiment of the present invention;
FIG. 4 is a schematic top view of a precast concrete shear wall according to a first embodiment of the present invention;
FIG. 5 is a schematic bottom view of a precast concrete shear wall according to a first embodiment of the present invention;
fig. 6 is a schematic diagram of a structure in which an upper connecting bar is overlapped with a lower connecting bar according to the first embodiment of the present invention;
FIG. 7 is a schematic view of an assembled structure of a precast concrete shear wall according to a first embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view taken at A-A of FIG. 7;
FIG. 9 is a schematic cross-sectional view at B-B in FIG. 7;
FIG. 10 is a schematic view of reinforcement of a precast concrete shear wall according to a second embodiment of the present invention;
FIG. 11 is a schematic view of reinforcement of a precast concrete shear wall according to a third embodiment of the present invention
FIG. 12 is a schematic top view of a precast concrete shear wall of a fourth embodiment of the present invention;
FIG. 13 is a schematic bottom view of a precast concrete shear wall of a fourth embodiment of the present invention;
FIG. 14 is a schematic top view of a precast concrete shear wall of embodiment five of the present invention;
fig. 15 is a schematic bottom view of a precast concrete shear wall of a fifth embodiment of the present invention.
The meaning of the reference numerals in the figures:
100-prefabricating a concrete shear wall; 101-prefabricating wallboard in the middle; 102-prefabricating edge members; 103-cast-in-situ notch; 104-lower connecting steel bars; 105-upper connecting steel bars; 106-reinforcing bars extending upwardly from the top end of the intermediate prefabricated wall panel; 107-fitting holes; 108-vertical distribution ribs; 109-horizontal distribution bars; 110-reserving reinforcing steel bars; 111-tie bars; 112-L-shaped edge members; the 113-L-shaped edge component and the middle prefabricated wallboard are positioned on the same straight line; a portion of the 114-L-shaped edge member perpendicular to the intermediate prefabricated wall panel; 115-T-shaped edge members; a portion of the 116-T edge member collinear with the intermediate prefabricated wall panel; a portion of the 117-T edge member perpendicular to the intermediate prefabricated wall panel; 118-grouting holes; 200-cast-in-situ area; 300-floor slab; 301-prefabricating a floor slab; 302-cast-in-situ floor concrete; 303-floor rebar; 304-top floor slab; 400-coupling position.
Detailed Description
The invention is further described below with reference to examples.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Embodiment one:
fig. 1 to 5 show a welded precast concrete shear wall 100 with edge members according to a first embodiment, which includes a reinforcement cage, a middle precast wall panel 101, and precast edge members 102 on both sides.
The middle prefabricated wall panel 101 is prefabricated together with the prefabricated edge members 102 on both sides, and the inner reinforcement cage connects the middle prefabricated wall panel 101 with the prefabricated edge members 102 on both sides as a whole. The prefabricated edge member 102 of the present embodiment is a straight edge member, that is, the prefabricated edge member 102 and the middle prefabricated wall panel 101 are positioned on the same line in a plan view.
Wherein, the bottom ends of the prefabricated edge components 102 on two sides are higher than the bottom ends of the middle prefabricated wall board 101, so that cast-in-place gaps 103 are respectively formed below the prefabricated edge components 102 on two sides, and the cast-in-place gaps 103 are used for casting concrete on site to form a cast-in-place area 200.
The preferred height of the cast-in-situ notch 103 is 300-400 mm.
Part of the steel bars of the steel bar framework extend into the cast-in-situ notch 103, and the steel bars extending into the cast-in-situ notch comprise lower connecting steel bars 104 which are vertically downward. Meanwhile, a portion of the reinforcing bars of the reinforcing cage protrude upward from the top end of the prefabricated edge member 102, and the reinforcing bars protruding upward from the top end of the prefabricated edge member 102 include upper connecting reinforcing bars 105 vertically upward. The upper connecting bars 105 and the lower connecting bars 104 are all straight bars, and when assembled, the upper connecting bars 105 of the precast concrete shear wall 100 of the lower layer are used for welding with the lower connecting bars 104 of the precast concrete shear wall 100 of the upper layer.
In this embodiment, a reserved steel bar 110 extending upwards is arranged at the top end of the middle prefabricated wall panel 101, the reserved steel bar 110 is a linear steel bar, and the lower end of the reserved steel bar is buried in the middle prefabricated wall panel 101 vertically downwards. An assembly hole 107 is arranged at the bottom end of the middle prefabricated wall plate 101 corresponding to the reserved reinforcing steel bar 110, and a grouting hole 118 communicated with the assembly hole 107 is arranged at the side surface of the middle prefabricated wall plate 101. At the time of assembly, the reserved steel bars 110 will be penetrated into the assembly holes 108 and poured with self-compacting concrete into the assembly holes 107 through the grouting holes 118.
The reinforcement cage comprises horizontal distribution ribs 109, vertical distribution ribs 108 and tie ribs 111, wherein the horizontal distribution ribs 109 are sequentially arranged along the height direction of the precast concrete shear wall 100, the vertical distribution ribs 108 are sequentially arranged along the length direction of the precast concrete shear wall 100, the horizontal distribution ribs 109 and the vertical distribution ribs 108 are intersected, reinforcement meshes are formed on two sides of the precast concrete shear wall 100, and the tie ribs 111 pull and connect the reinforcement meshes on two sides.
As shown in fig. 6 to 9, the embodiment also discloses an assembly structure of the precast concrete shear wall 100, wherein the lower precast concrete shear wall 100 corresponds to the upper precast concrete shear wall 100, a space of a floor slab 300 is formed between the top end of the lower precast concrete shear wall 100 and the bottom end of the upper precast concrete shear wall 100 to form a joint 400, the upper connecting steel bars 105 of the lower precast concrete shear wall 100 pass through the joint 400 and penetrate into the cast-in-place gaps 103 of the upper precast concrete shear wall 100, and the upper connecting steel bars 105 of the lower precast concrete shear wall 100 are partially overlapped with the lower connecting steel bars 104 of the upper precast concrete shear wall 100, and the overlapped and welded parts of the upper connecting steel bars 105 and the lower connecting steel bars 104 are welded at the M positions of fig. 6 and 8. And finally, casting concrete in situ in the cast-in-situ notch 103 to form a cast-in-situ area 200, so as to realize stable and reliable connection of the upper and lower precast concrete shear walls 100.
One construction process of the assembly structure of the welded precast concrete shear wall 100 with the edge member of this embodiment is as follows:
step 1, firstly, assembling a precast concrete shear wall 100 at the lowest layer on a foundation, constructing a temporary fixing frame near an installation position, hoisting the precast concrete shear wall 100 at the installation position, fixing the precast concrete shear wall 100 by the temporary fixing frame, filling up the space between the lower end of the precast concrete shear wall 100 and the foundation by seat slurry, embedding foundation connecting steel bars on the foundation, penetrating the foundation connecting steel bars upwards and connecting the foundation connecting steel bars with the precast concrete shear wall 100 at the lowest layer, and connecting the precast concrete shear wall 100 at the lowest layer with the foundation;
Step 2, constructing temporary supporting frames, respectively installing precast floor slabs 301 on two sides above the precast concrete shear wall 100, supporting the precast floor slabs 301 by the temporary supporting frames, fixedly connecting exposed parts of steel bars between the precast floor slabs 301 by adopting a mechanical connection or welding mode, and paving continuous floor slab steel bars 303 above the precast floor slabs 301; a joint 400 is reserved at a corresponding position of the precast concrete shear wall 100, and the upper connecting steel bars 105 and the reserved steel bars 110 of the precast concrete shear wall 100 pass through the joint 400;
Step 3, pouring cast-in-situ floor slab concrete 302 on the precast floor slab 301, and connecting the precast floor slab 301 and the floor slab steel bars 303 to form a floor slab 300 after the cast-in-situ floor slab concrete 302 is coagulated to reach the strength requirement;
Step 4, hoisting the precast concrete shear wall 100 on the upper layer on the floor of the floor slab 300, filling the bottom end of the middle precast wallboard 101 of the precast concrete shear wall 100 with seat slurry, and fixing the precast concrete shear wall 100 by a temporary fixing frame; the upper connecting steel bars 105 of the lower precast concrete shear wall 100 penetrate into the cast-in-situ notch 103 of the upper precast concrete shear wall 100, and the upper connecting steel bars 105 of the lower precast concrete shear wall 100 are partially overlapped with the lower connecting steel bars 104 of the upper precast concrete shear wall 100, the overlapped parts of the upper connecting steel bars 105 and the lower connecting steel bars 104 are welded, and then concrete is cast in the cast-in-situ notch 103; meanwhile, the reserved reinforcing bars 110 of the lower precast concrete shear wall 100 are inserted into the assembly holes 107 of the upper precast concrete shear wall 100, and self-compacting concrete is poured into the assembly holes 107 from the grouting holes 118.
And (5) repeating the steps 2 to 4 to build the building layer by layer. Wherein the precast concrete shear wall 100 of the top layer is not provided with the connecting rebars 105, but the rebars extending from the top end are connected with the top floor 304 and poured together after extending part of the rebars of the steel reinforcement cage upwards from the top end.
Embodiment two:
as shown in fig. 10, part of the reinforcing bars of the reinforcing cage of the second embodiment extend upward from the top end of the intermediate prefabricated wall panel 101, the reinforcing bars 106 extending upward from the top end of the intermediate prefabricated wall panel 101 are shorter than the upper connecting reinforcing bars 105, and the reinforcing bars 106 extending upward from the top end of the intermediate prefabricated wall panel 101 are used for connection with the floor slab 300 or the hidden beam, and the floor slab 300 may be a cast-in-situ floor slab.
Embodiment III:
as shown in fig. 11, the difference between the third embodiment and the second embodiment is that a middle vertical connection structure is provided at the upper and lower ends of the middle precast wallboard 101, and the top end of the middle precast wallboard 101 has no protruding reinforcing steel bars, and the middle vertical connection structure is used for connecting the middle precast wallboard 101 of the precast concrete shear wall 100 of the upper and lower layers. The middle vertical connection structure of this embodiment adopts the connection form of a high-rise assembled single row hole prefabricated shear wall and its assembly structure disclosed in the chinese patent No. cn201720863223.X, generally, assembly holes 107 are respectively provided at the top and bottom ends of the middle prefabricated wall panel 101, and when in assembly, the connection ribs 110 penetrate into the assembly holes 107, and self-compacting concrete is poured into the assembly holes 107 for connection.
In another embodiment, the middle vertical connection structure may also adopt a connection form of "prefabricated shear wall with single row of through holes and its assembly structure" disclosed in chinese patent No. CN201720862795.6, which is generally that an assembly hole 107 is provided in a middle prefabricated wall panel, the assembly hole 107 is a through hole penetrating up and down, and when assembling, a connection rib 110 penetrates into the assembly hole 107, and self-compacting concrete is poured into the assembly hole 107 for connection.
Embodiment four:
The difference between the fourth embodiment and the first embodiment is that the prefabricated edge member 102 is, as shown in fig. 12 and 13, the prefabricated edge member 102 on one side of the middle prefabricated wall panel 101 in the fourth embodiment is an L-shaped edge member 112, and the upper and lower ends of the L-shaped edge member 112 are further provided with side vertical connection structures. During assembly, the L-shaped edge members 112 of the upper and lower precast concrete shear walls 100 are connected through the structures of the lower connecting steel bars 104 and the upper connecting steel bars 105 in a matched welding mode, and meanwhile, the side vertical connecting structures are also adopted.
The specific assembly structure can be as follows:
the part 114 of the L-shaped edge component perpendicular to the middle prefabricated wallboard is connected with the upper connecting steel bar 105 through the lower connecting steel bar 104 in a matched welding structure, the part 113 of the L-shaped edge component on the same straight line with the middle prefabricated wallboard is connected through the structural form of a prefabricated shear wall with a single row of through holes and an assembly structure thereof disclosed in China patent No. CN201720862795.6, which is mainly characterized in that an assembly hole 107 is arranged at the part 113 of the L-shaped edge component on the same straight line with the middle prefabricated wallboard, the assembly hole 107 at the L-shaped edge component is a through hole penetrating up and down, and a stress rib is penetrated into the assembly hole 107 at the L-shaped edge component 112 for connection.
Fifth embodiment:
The difference between the fifth embodiment and the first embodiment is that the prefabricated edge member 102 is, as shown in fig. 14 and 15, a prefabricated edge member 102 on one side of the middle prefabricated wall panel 101 in the fifth embodiment is a T-shaped edge member 115, and the upper and lower ends of the T-shaped edge member 115 are further provided with side vertical connection structures. During assembly, the T-shaped edge members 115 of the upper and lower precast concrete shear walls 100 are connected through the structures of the lower connecting steel bars 104 and the upper connecting steel bars 105 in a matched welding manner, and simultaneously are also connected through the side vertical connecting structures.
The specific assembly structure can be as follows:
The portion 117 of the T-shaped edge member perpendicular to the middle prefabricated wall panel is connected with the upper connecting steel bar 105 through the lower connecting steel bar 104 in a matched welding structure, while the portion 116 of the T-shaped edge member in the same line with the middle prefabricated wall panel is connected through the structural form of a prefabricated shear wall with a single row of through holes and an assembly structure thereof disclosed in chinese patent No. CN201720862795.6, which is approximately that an assembly hole 107 is formed in the portion 116 of the T-shaped edge member in the same line with the middle prefabricated wall panel, the assembly hole 107 of the T-shaped edge member is a through hole penetrating up and down, and a stress rib is penetrated into the assembly hole 107 of the T-shaped edge member 115 for connection.
The side vertical connection structure exemplified in the above embodiment is only considered to be a preferable solution, but is not limited thereto. The side vertical connection structure can be in the structural form of a high-rise assembled single-row through hole prefabricated shear wall and an assembly structure thereof disclosed in China patent No. CN201720862795.6, can also be in the connection form of a high-rise assembled single-row through hole prefabricated shear wall and an assembly structure thereof disclosed in China patent No. CN201720863223.X, and can also be in the connection form of other connection structures for connecting upper and lower layers of shear walls.
The above-mentioned embodiments of the present invention are not intended to limit the scope of the present invention, and the embodiments of the present invention are not limited thereto, and all kinds of modifications, substitutions or alterations made to the above-mentioned structures of the present invention according to the above-mentioned general knowledge and conventional means of the art without departing from the basic technical ideas of the present invention shall fall within the scope of the present invention.
Claims (9)
1. The utility model provides a take welding formula precast concrete shear force wall of edge component which characterized in that: the prefabricated wall comprises a reinforcement cage, a middle prefabricated wall plate and two prefabricated edge components on two sides, wherein the middle prefabricated wall plate and the two prefabricated edge components on two sides are prefabricated together, the inner reinforcement cage is used for connecting the middle prefabricated wall plate and the two prefabricated edge components on two sides into a whole, cast-in-situ gaps are respectively arranged below the two prefabricated edge components, part of reinforcing steel bars of the reinforcement cage extend into the cast-in-situ gaps, the reinforcing steel bars extending into the cast-in-situ gaps comprise vertical downward lower connecting reinforcing steel bars, part of reinforcing steel bars of the reinforcement cage extend upwards from the top ends of the prefabricated edge components, the reinforcing steel bars extending upwards from the top ends of the prefabricated edge components comprise vertical upward upper connecting reinforcing steel bars, the upper connecting reinforcing steel bars of the prefabricated concrete shear walls on the lower layer are used for being welded with the lower connecting reinforcing steel bars of the prefabricated concrete shear walls on the upper layer, at least one reserved reinforcing steel bar extending upwards is arranged at the top ends of the middle prefabricated wall plate, at least one assembly hole is arranged at the position of the bottom ends of the middle prefabricated wall plate corresponding to the reserved reinforcing steel bars, and the side surfaces of the middle prefabricated wall plates are provided with grouting assembly holes communicated with the assembly holes.
2. The welded precast concrete shear wall with edge members of claim 1, wherein: the bottom ends of the prefabricated edge components on two sides are higher than the bottom ends of the middle prefabricated wall boards, so that cast-in-situ gaps are respectively formed below the prefabricated edge components on two sides.
3. The welded precast concrete shear wall with edge members of claim 1, wherein: the upper connecting steel bars and the lower connecting steel bars are all linear steel bars.
4. The welded precast concrete shear wall with edge members of claim 1, wherein: the reserved steel bars are straight steel bars, and the lower ends of the reserved steel bars are buried in the middle prefabricated wallboard vertically downwards.
5. The welded precast concrete shear wall with edge members of claim 1, wherein: the prefabricated edge component is a straight edge component, an L-shaped edge component or a T-shaped edge component.
6. The welded precast concrete shear wall with edge members of claim 1, wherein: the prefabricated edge components are further provided with side vertical connecting structures, and the side vertical connecting structures are also used for connecting the prefabricated edge components of the prefabricated concrete shear wall at the upper layer and the lower layer.
7. The welded precast concrete shear wall with edge members of claim 1, wherein: and part of the steel bars of the steel bar framework extend upwards from the top end of the middle prefabricated wallboard, and the steel bars extending upwards from the top end of the middle prefabricated wallboard are used for anchoring with the laminated slab cast-in-situ layer or the cast-in-situ hidden beam at the storey.
8. The welded precast concrete shear wall with edge members of claim 1, wherein: the height of the cast-in-situ notch is 300-400 mm.
9. A prefabricated concrete shear wall assembly structure according to any one of claims 1 to 8, characterized in that: a floor slab interval is arranged between the top end of the precast concrete shear wall at the lower layer and the bottom end of the precast concrete shear wall at the upper layer, a connecting position is formed, upper connecting steel bars of the precast concrete shear wall at the lower layer pass through the connecting position and are overlapped with lower connecting steel bars in a cast-in-place gap of the precast concrete shear wall at the upper layer, the part where the upper connecting steel bars are overlapped with the lower connecting steel bars is welded, and concrete is cast in situ in the cast-in-place gap; meanwhile, reserved steel bars of the precast concrete shear wall of the lower layer penetrate through the connecting positions and are inserted into the assembly holes of the precast concrete shear wall of the upper layer, and self-compacting concrete is poured into the assembly holes from the grouting holes.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN119122132A (en) * | 2024-07-23 | 2024-12-13 | 清华大学 | Concrete modular shear wall and construction method thereof |
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