CN112695926B - PBL-based connection precast concrete composite window wall - Google Patents
PBL-based connection precast concrete composite window wall Download PDFInfo
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- CN112695926B CN112695926B CN202110018817.1A CN202110018817A CN112695926B CN 112695926 B CN112695926 B CN 112695926B CN 202110018817 A CN202110018817 A CN 202110018817A CN 112695926 B CN112695926 B CN 112695926B
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- shear wall
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- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 239000011178 precast concrete Substances 0.000 title claims abstract description 15
- 239000004567 concrete Substances 0.000 claims abstract description 57
- 230000007306 turnover Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims description 40
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 238000005266 casting Methods 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 230000002787 reinforcement Effects 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 7
- 238000009413 insulation Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000004321 preservation Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
-
- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Load-Bearing And Curtain Walls (AREA)
Abstract
The invention discloses a PBL-based connection precast concrete composite window wall, which comprises a transverse window type shear wall and a longitudinal shear wall connected with the transverse window type shear wall; the transverse window type shear wall and the longitudinal shear wall are vertically arranged. The beneficial effects of the invention are as follows: PBL is embedded in the transverse window type shear wall and the longitudinal shear wall, so that the transverse window type shear wall and the longitudinal shear wall have good stress performance, are suitable for projects with long construction period and high requirements on durability of temporary houses for projects, completely abandon on-site wet operation by adopting dry connection nodes, and are simple and quick to install, and the advantages of saving resources, protecting environment and reducing pollution of the fabricated building technology are exerted to the greatest extent; the secondary pouring method is adopted, the common concrete material is adopted at the edge position, after the edge position is initially set, the light concrete is poured in the hollow middle part by taking the common concrete material as a template, so that the turnover cost is reduced, and meanwhile, the comfort level can be improved by virtue of the heat preservation, heat insulation, sound insulation, fire resistance and other characteristics of the light concrete.
Description
Technical Field
The invention relates to a composite shear wall, in particular to a PBL-based prefabricated concrete composite window wall, and belongs to the technical field of constructional engineering application.
Background
The assembly type technology application of the middle-low-rise building is mainly embodied in the aspects of temporary buildings, light steel villas and the like, and aims to improve the durability, waterproof and fireproof performances of the building and reduce the later maintenance cost.
In the prior art, a concrete composite shear wall structure system is adopted for construction, a composite window wall is used as one of the concrete composite shear wall structure systems, in the process of being connected with other walls, the existing construction mode mostly adopts a grouting sleeve or a post-pouring belt to realize the connection of nodes, the appearance and the installation convenience of components are seriously affected, in addition, for a temporary house for engineering, a prefabricated window wall component made of common concrete can generate higher turnover cost, the economic benefit is poor, the goal of turnover can not be reached, and the resource utilization efficiency is low.
Based on the structure, the application provides a PBL-based connection precast concrete composite window wall.
Disclosure of Invention
The invention aims to solve the problem and provide a PBL-based connection precast concrete composite window wall.
The invention realizes the above purpose through the following technical scheme: the PBL-based connection precast concrete composite window wall comprises a transverse window type shear wall and a longitudinal shear wall connected with the transverse window type shear wall; the transverse window type shear wall and the longitudinal shear wall are vertically arranged;
The transverse window type shear wall is connected with the longitudinal shear wall positioned at the inner side through the inner side longitudinal shear wall embedded part, and the transverse window type shear wall is connected with the longitudinal shear wall positioned at the outer side through the peripheral longitudinal shear wall embedded part;
The transverse window type shear wall is provided with a window, the transverse window type shear wall and the longitudinal shear wall are connected with an upper layer ring beam through wall-upper ring beam embedded parts, and the transverse window type shear wall and the longitudinal shear wall are connected with a lower layer ring beam through wall-lower ring beam embedded parts;
The transverse window type shear wall comprises a window type shear wall casting common concrete part, a window type shear wall casting light concrete part and a key groove, wherein the window type shear wall casting common concrete part is cast at the peripheral part of the transverse window type shear wall, the window type shear wall casting light concrete part is cast at the hollow part of the window type shear wall casting common concrete part, and the contact surface of the window type shear wall casting common concrete part and the window type shear wall casting light concrete part is provided with the key groove;
The inner longitudinal shear wall embedded part comprises an inner longitudinal shear wall embedded part inner threaded hole, an inner longitudinal shear wall embedded part side wing plate and an inner longitudinal shear wall embedded part hole, wherein the two inner longitudinal shear wall embedded part side wing plates penetrate through the longitudinal inner longitudinal shear wall embedded part inner threaded hole to be welded, and the inner longitudinal shear wall embedded part side wing plate is provided with the inner longitudinal shear wall embedded part hole;
The embedded part of the wall-upper ring beam and the embedded part of the wall-lower ring beam have the same structure and are composed of an embedded part top plate, embedded part side wing plates, embedded part internal wire steel pipes, embedded part steel pipes and side wing plate rib plates, wherein the embedded part side wing plates are connected to two sides of the embedded part top plate in an inclined mode, the embedded part internal wire steel pipes are connected to the lower plate surface of the embedded part top plate, the embedded part internal wire steel pipes are connected with the embedded part side wing plates through the embedded part steel pipes and the side wing plate rib plates, embedded part internal wires are arranged in the embedded part internal wire steel pipes, and embedded part side wing plate holes are formed in the embedded part side wing plates;
The transverse window type shear wall embedded part comprises a transverse window type shear wall embedded part top plate and transverse window type shear wall embedded part side wing plates, wherein the two sides of the transverse window type shear wall embedded part top plate are connected with oblique transverse window type shear wall embedded part side wing plates, transverse window type shear wall embedded part bolt holes are formed in the transverse window type shear wall embedded part top plate, and transverse window type shear wall embedded part side wing plate holes are formed in the transverse window type shear wall embedded part side wing plates;
The peripheral longitudinal shear wall embedded part comprises a peripheral longitudinal shear wall embedded part internal threaded hole, a peripheral longitudinal shear wall embedded part side wing plate and a peripheral longitudinal shear wall embedded part hole, wherein the two peripheral longitudinal shear wall embedded part side wing plates penetrate through the peripheral longitudinal shear wall embedded part internal threaded hole to be welded, one side of the peripheral longitudinal shear wall embedded part side wing plate is aligned with the peripheral longitudinal shear wall embedded part internal threaded hole, and the peripheral longitudinal shear wall embedded part hole is formed in the peripheral longitudinal shear wall embedded part side wing plate.
As still further aspects of the invention: and the transverse window type shear wall is provided with a wall connection operation hand hole at the connection part of the embedded part.
As still further aspects of the invention: the window type shear wall is characterized in that a common concrete reinforcement cage is arranged in a common concrete pouring part of the window type shear wall, and the common concrete reinforcement cage is composed of annular stirrups and vertical longitudinal ribs.
As still further aspects of the invention: and a lightweight concrete reinforcing mesh is arranged in the lightweight concrete pouring part of the window type shear wall.
As still further aspects of the invention: the transverse window type shear wall and the longitudinal shear wall connected with the transverse window type shear wall are prefabricated in a factory.
As still further aspects of the invention: and the connecting nodes between the transverse window type shear wall and the longitudinal shear wall are all in high-strength bolt dry connection.
As still further aspects of the invention: the transverse window type shear wall and the longitudinal shear wall are precast concrete based on PBL connection.
As still further aspects of the invention: the transverse window type shear wall and the longitudinal shear wall can be recycled.
The beneficial effects of the invention are as follows: the precast concrete composite window wall based on PBL connection is reasonable in design, PBL is embedded in the transverse window type shear wall and the longitudinal shear wall, the stress performance is good, the precast concrete composite window wall is suitable for projects with long construction period and high requirements on the durability of temporary houses for the projects, the transverse window type shear wall and the longitudinal shear wall all adopt dry connection nodes, the field wet operation is completely abandoned, the installation is simple and rapid, and the advantages of resource conservation, environmental protection and pollution reduction of the fabricated building technology are exerted to the greatest extent; the method of secondary pouring is adopted in the manufacturing of the component, the common concrete material is adopted in the edge position, after the edge position is initially set, the light concrete is poured in the middle hollow by taking the common concrete material as a template, so that the turnover cost is reduced, and meanwhile, the comfort level is improved by virtue of the heat preservation, heat insulation, sound insulation, fire resistance and other characteristics of the light concrete.
Drawings
FIG. 1 is a schematic view of a transverse window shear wall structure and a longitudinal wall connection according to the present invention;
FIG. 2 is a schematic cross-sectional view of a transverse window shear wall according to the present invention;
FIG. 3 is a schematic view of the structure of the embedded part of the inner longitudinal shear wall of the invention;
FIG. 4 is a schematic view of the wall-upper ring beam embedment of the present invention;
FIG. 5 is a schematic view of a transverse window shear wall embedment of the present invention;
FIG. 6 is a schematic view of the peripheral longitudinal shear wall embedment of the present invention.
In the figure: 1. the transverse window type shear wall, 101, the window type shear wall pours the common concrete part, 102, the window type shear wall pours the light concrete part, 103, the key slot, 2, the longitudinal shear wall, 3, the inside longitudinal shear wall embedded part, 4, the wall-upper ring beam embedded part, 5, the wall-lower ring beam embedded part, 6, the transverse window type shear wall embedded part, 7, the wall connection operation hand hole, 8, the peripheral longitudinal shear wall embedded part, 9, the common concrete reinforcement cage, 10, the light concrete reinforcement net, 301, the inside longitudinal shear wall embedded part inner threaded hole, 302, the inside longitudinal shear wall embedded part side wing plate, 303, an inside longitudinal shear wall embedded part hole, 401, an embedded part top plate, 402, an embedded part side wing plate, 403, an embedded part inner wire steel pipe, 404, an embedded part inner wire, 405, an embedded part side wing plate hole, 406, an embedded part steel pipe and side wing plate rib plate, 601, a transverse window type shear wall embedded part top plate, 602, a transverse window type shear wall embedded part bolt hole, 603, a transverse window type shear wall embedded part side wing plate, 604, a transverse window type shear wall embedded part side wing plate hole, 801, a peripheral longitudinal shear wall embedded part inner threaded hole, 802, a peripheral longitudinal shear wall embedded part side wing plate and 803, and a peripheral longitudinal shear wall embedded part hole.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 6, a PBL-based connection precast concrete composite window wall includes a transverse window type shear wall 1 and a longitudinal shear wall 2 connected thereto; the transverse window type shear wall 1 and the longitudinal shear wall 2 are vertically arranged;
The transverse window type shear wall 1 is connected with the longitudinal shear wall 2 positioned at the inner side through the longitudinal shear wall embedded part 3 at the inner side, and the transverse window type shear wall 1 is connected with the longitudinal shear wall 2 positioned at the outer side through the longitudinal shear wall embedded part 8 at the periphery;
The transverse window type shear wall 1 is provided with windows, the transverse window type shear wall 1 and the longitudinal shear wall 2 are connected with an upper layer ring beam through a wall-upper ring beam embedded part 4, and the transverse window type shear wall 1 and the longitudinal shear wall 2 are connected with a lower layer ring beam through a wall-lower ring beam embedded part 5;
The transverse window type shear wall 1 comprises a window type shear wall casting ordinary concrete part 101, a window type shear wall casting light concrete part 102 and a key groove 103, wherein the window type shear wall casting ordinary concrete part 101 is cast at the peripheral part of the transverse window type shear wall 1, the window type shear wall casting light concrete part 102 is cast at the hollow part of the window type shear wall casting ordinary concrete part 101, and the key groove 103 is arranged on the contact surface of the window type shear wall casting ordinary concrete part 101 and the window type shear wall casting light concrete part 102;
The inner longitudinal shear wall embedded part 3 comprises an inner longitudinal shear wall embedded part internal threaded hole 301, an inner longitudinal shear wall embedded part side wing plate 302 and an inner longitudinal shear wall embedded part hole 303, wherein the two inner longitudinal shear wall embedded part side wing plates 302 penetrate through the longitudinal inner longitudinal shear wall embedded part internal threaded hole 301 to be welded, and the inner longitudinal shear wall embedded part hole 303 is formed in the inner longitudinal shear wall embedded part side wing plate 302;
The wall-upper ring beam embedded part 4 and the wall-lower ring beam embedded part 5 have the same structure and are composed of an embedded part top plate 401, an embedded part side wing plate 402, an embedded part internal wire steel pipe 403 and embedded part steel pipes and side wing plate rib plates 406, wherein the embedded part side wing plate 402 is obliquely connected to two sides of the embedded part top plate 401, the embedded part internal wire steel pipe 403 is connected to the lower plate surface of the embedded part top plate 401, the embedded part internal wire steel pipe 403 is connected with the embedded part side wing plate 402 through the embedded part steel pipe and the side wing plate rib plates 406, an embedded part internal wire 404 is arranged in the embedded part internal wire steel pipe 403, and embedded part side wing plate holes 405 are formed in the embedded part side wing plate 402;
The transverse window type shear wall embedded part 6 comprises a transverse window type shear wall embedded part top plate 601 and transverse window type shear wall embedded part side wing plates 603, two sides of the transverse window type shear wall embedded part top plate 601 are connected with oblique transverse window type shear wall embedded part side wing plates 603, transverse window type shear wall embedded part bolt holes 602 are formed in the transverse window type shear wall embedded part top plate 601, and transverse window type shear wall embedded part side wing plate holes 604 are formed in the transverse window type shear wall embedded part side wing plates 603;
the peripheral longitudinal shear wall embedded part 8 comprises a peripheral longitudinal shear wall embedded part internal threaded hole 801, a peripheral longitudinal shear wall embedded part side wing plate 802 and a peripheral longitudinal shear wall embedded part hole 803, wherein the two peripheral longitudinal shear wall embedded part side wing plates 802 penetrate through the peripheral longitudinal shear wall embedded part internal threaded hole 801 to be welded, one side of each peripheral longitudinal shear wall embedded part side wing plate is aligned with the peripheral longitudinal shear wall embedded part internal threaded hole 801, and the peripheral longitudinal shear wall embedded part hole 803 is formed in each peripheral longitudinal shear wall embedded part side wing plate 802.
In the embodiment of the invention, the wall connection operation hand hole 7 is formed at the connection part of the embedded part of the transverse window type shear wall 1, so that the operation connection is convenient.
In the embodiment of the invention, a common concrete reinforcement cage 9 is arranged in the window type shear wall casting common concrete part 101, and the common concrete reinforcement cage 9 is composed of annular stirrups and vertical longitudinal bars.
In the embodiment of the invention, the lightweight concrete reinforcing mesh 10 is arranged in the lightweight concrete pouring part 102 of the window type shear wall, so that the transportation cost in the system turnover process is greatly reduced, and meanwhile, the comfort is improved by virtue of the characteristics of heat preservation, heat insulation, sound insulation, fire resistance and the like of the lightweight concrete, and compared with a steel structure house commonly used in middle-low-rise buildings, the window type shear wall has better durability and comfort.
In the embodiment of the invention, the transverse window type shear wall 1 and the longitudinal shear wall 2 connected with the transverse window type shear wall are prefabricated in a factory, so that the on-site installation and construction are facilitated, and the construction efficiency is improved.
In the embodiment of the invention, the connecting nodes between the transverse window type shear wall 1 and the longitudinal shear wall 2 are all in high-strength bolt dry connection, so that the on-site wet operation is completely abandoned, the installation is simple and quick, and the resource saving of the fabricated building technology is exerted to the greatest extent.
In the embodiment of the invention, the transverse window type shear wall 1 and the longitudinal shear wall 2 are precast concrete based on PBL connection, and the stress performance is good.
In the embodiment of the invention, the transverse window type shear wall 1 and the longitudinal shear wall 2 can be used in a turnover way and can be repeatedly used for a plurality of times, so that the resources are saved.
Working principle: when the PBL connection-based precast concrete composite window wall is used, firstly, a composite shear wall is manufactured, a common concrete part is poured firstly, then a light concrete part is poured, and a joint surface key groove is formed in the contact surface of the light concrete part and the common concrete part; during construction, the transverse window type shear wall 1 and the longitudinal shear wall 2 are connected with the lower layer ring beam through the wall-lower ring beam embedded part 5, the transverse window type shear wall 1 and the longitudinal shear wall 2 are connected with each other through the longitudinal shear wall embedded part 3, a window is formed in the transverse window type shear wall 1, and finally the transverse window type shear wall 1 and the longitudinal shear wall 2 are connected with the upper layer ring beam through the wall-upper ring beam embedded part 4.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (2)
1. The PBL-based connecting precast concrete composite window wall comprises a transverse window type shear wall (1) and a longitudinal shear wall (2) connected with the transverse window type shear wall; the method is characterized in that: the transverse window type shear wall (1) and the longitudinal shear wall (2) are vertically arranged;
the transverse window type shear wall (1) is connected with the longitudinal shear wall (2) positioned at the inner side through an inner side longitudinal shear wall embedded part (3), and the transverse window type shear wall (1) is connected with the longitudinal shear wall (2) positioned at the outer side through a peripheral longitudinal shear wall embedded part (8);
the transverse window type shear wall (1) is provided with a window, the transverse window type shear wall (1) and the longitudinal shear wall (2) are connected with an upper layer ring beam through a wall-upper ring beam embedded part (4), and the transverse window type shear wall (1) and the longitudinal shear wall (2) are connected with a lower layer ring beam through a wall-lower ring beam embedded part (5);
The transverse window type shear wall (1) comprises a window type shear wall casting common concrete part (101), a window type shear wall casting light concrete part (102) and a key groove (103), wherein the window type shear wall casting common concrete part (101) is cast at the peripheral part of the transverse window type shear wall (1), the window type shear wall casting light concrete part (102) is cast at the hollow part of the window type shear wall casting common concrete part (101), and the key groove (103) is arranged on the contact surface of the window type shear wall casting common concrete part (101) and the window type shear wall casting light concrete part (102);
The inner side longitudinal shear wall embedded part (3) comprises an inner side longitudinal shear wall embedded part internal threaded hole (301), an inner side longitudinal shear wall embedded part side wing plate (302) and an inner side longitudinal shear wall embedded part hole (303), the two inner side longitudinal shear wall embedded part side wing plates (302) penetrate through the longitudinal inner side longitudinal shear wall embedded part internal threaded hole (301) to be welded, and the inner side longitudinal shear wall embedded part hole (303) is formed in the inner side longitudinal shear wall embedded part side wing plate (302);
The embedded part (4) of the wall-upper ring beam and the embedded part (5) of the wall-lower ring beam have the same structure and are composed of an embedded part top plate (401), embedded part side wing plates (402), embedded part inner wire steel pipes (403) and embedded part steel pipes and side wing plate rib plates (406), the embedded part side wing plates (402) are obliquely connected to two sides of the embedded part top plate (401), the embedded part inner wire steel pipes (403) are connected to the lower plate surface of the embedded part top plate (401), the embedded part inner wire steel pipes (403) are connected with the embedded part side wing plates (402) through the embedded part steel pipes and the side wing plate rib plates (406), embedded part inner wire steel pipes (403) are internally provided with embedded part inner wires (404), and embedded part side wing plate holes (405) are formed in the embedded part side wing plates (402);
the transverse window type shear wall embedded part (6) comprises a transverse window type shear wall embedded part top plate (601) and transverse window type shear wall embedded part side wing plates (603), the two sides of the transverse window type shear wall embedded part top plate (601) are connected with the transverse window type shear wall embedded part side wing plates (603) which are inclined, transverse window type shear wall embedded part bolt holes (602) are formed in the transverse window type shear wall embedded part top plate (601), and transverse window type shear wall embedded part side wing plate holes (604) are formed in the transverse window type shear wall embedded part side wing plates (603);
The peripheral longitudinal shear wall embedded part (8) comprises a peripheral longitudinal shear wall embedded part internal threaded hole (801), a peripheral longitudinal shear wall embedded part side wing plate (802) and a peripheral longitudinal shear wall embedded part hole (803), wherein the two peripheral longitudinal shear wall embedded part side wing plates (802) penetrate through the peripheral longitudinal shear wall embedded part internal threaded hole (801) to be welded, one side of each peripheral longitudinal shear wall embedded part is aligned with the peripheral longitudinal shear wall embedded part internal threaded hole (801), and the peripheral longitudinal shear wall embedded part hole (803) is formed in each peripheral longitudinal shear wall embedded part side wing plate (802);
A common concrete reinforcement cage (9) is arranged in the common concrete pouring part (101) of the window type shear wall, and the common concrete reinforcement cage (9) is composed of annular stirrups and vertical longitudinal ribs;
A lightweight concrete reinforcing mesh (10) is arranged in the window type shear wall pouring lightweight concrete part (102); the connecting nodes between the transverse window type shear wall (1) and the longitudinal shear wall (2) are all in high-strength bolt dry connection; the transverse window type shear wall (1) and the longitudinal shear wall (2) are precast concrete based on PBL connection;
The transverse window type shear wall (1) is provided with a wall connection operation hand hole (7) at the connection part of the embedded part; the transverse window type shear wall (1) and the longitudinal shear wall (2) connected with the transverse window type shear wall are prefabricated in a factory.
2. The PBL-based connected precast concrete composite window wall of claim 1, wherein: the transverse window type shear wall (1) and the longitudinal shear wall (2) can be used in a turnover mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110018817.1A CN112695926B (en) | 2021-01-07 | 2021-01-07 | PBL-based connection precast concrete composite window wall |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110018817.1A CN112695926B (en) | 2021-01-07 | 2021-01-07 | PBL-based connection precast concrete composite window wall |
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| CN112695926A CN112695926A (en) | 2021-04-23 |
| CN112695926B true CN112695926B (en) | 2024-04-30 |
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| CN112695926A (en) | 2021-04-23 |
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