CN114250888B - Assembly type disassembly-free template for building assembly and installation method - Google Patents
Assembly type disassembly-free template for building assembly and installation method Download PDFInfo
- Publication number
- CN114250888B CN114250888B CN202111616330.XA CN202111616330A CN114250888B CN 114250888 B CN114250888 B CN 114250888B CN 202111616330 A CN202111616330 A CN 202111616330A CN 114250888 B CN114250888 B CN 114250888B
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- stress
- wall body
- corner
- protection piece
- corner protection
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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
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
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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
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
- E04B2002/867—Corner details
Abstract
The invention discloses an assembly type disassembly-free template for building assembly, which belongs to the field of buildings and comprises two wall plates and a corner protection piece, wherein the two wall plates are vertically arranged; the corner protection piece is fixed on the outer side of the corner connection part of the two wall body plates, stress pipes are arranged on the inner side of the corner connection part of the two wall body plates, and a grouting cavity is formed between the two wall body plates and the corner protection piece through the stress pipes; the corner protection piece is characterized in that a plurality of connecting devices are arranged between the corner protection piece and the stress pipe, the connecting devices provide tensile force for the corner protection piece, so that the corner protection piece has a movement trend towards the wall body plate, and the connecting devices are located in the grouting cavity. The corner protection piece is tightly connected through the connecting device, so that the corner protection piece is not easy to break away from and damage when being impacted, and meanwhile, the stress pipe enables the strength of the corner of the wall body to be increased, and stress concentration is avoided.
Description
Technical Field
The invention relates to the field of buildings, in particular to an assembly type disassembly-free template for building assembly and an installation method.
Background
The building assembled by the prefabricated components at the construction site is called a fabricated building, and the fabricated building carries out prefabrication of part or all of the components at a factory and then carries to a construction site for assembly. The 'assembly' is not only 'lapping', and after the prefabricated part is transported to a construction site, lapping and pouring of reinforced concrete can be carried out, so that the assembled house is very safe.
The corners of the wall body are easy to collide, acting force can be concentrated, so that the corners are easy to damage, the templates are easy to crack from the corners to cause damage, and meanwhile the templates at the corners are difficult to be tightly connected with the wall body.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the assembly type disassembly-free formwork for building assembly, which is tightly connected with a wall body, and is firmly connected at a corner and not easy to damage.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an assembly type disassembly-free template for building assembly, which comprises two wall body plates and a protective corner piece, wherein the two wall body plates are arranged vertically; the corner protection piece is fixed on the outer side of the corner connection part of the two wall body plates, stress pipes are arranged on the inner side of the corner connection part of the two wall body plates, and a grouting cavity is formed between the two wall body plates and the corner protection piece through the stress pipes; the corner protection piece is characterized in that a plurality of connecting devices are arranged between the corner protection piece and the stress pipe, the connecting devices provide tensile force for the corner protection piece, so that the corner protection piece has a movement trend towards the wall body plate, and the connecting devices are located in the grouting cavity. The corner protection piece is tightly connected through the connecting device and is integrally cast through the grouting space, so that the whole corner protection piece is firm and stable and is not easy to damage and fall off.
The invention has the preferable technical scheme that the vertex angles of the two wall body plates close to the stress tube are provided with arc-shaped notches, and when the stress tube is fixed, the outer side wall of the stress tube is attached to the inner walls of the arc-shaped notches at the two sides. Can effectively avoid stress concentration, and can limit the stress tube.
The invention has the preferable technical scheme that a stress cambered surface is arranged at the position, positioned in the grouting cavity, of the inner side of the protective corner piece, so that the section of the grouting cavity forms a fan shape; two stress blocks are symmetrically arranged on the stress arc surface along the symmetry axis of the protective corner fitting, the stress blocks extend into the grouting cavity, and the connecting device is connected with the stress blocks. The tip of the protection corner piece is not easy to damage, force can be well transferred through the stress block, and the protection corner piece is guaranteed to be firmly connected.
The invention has the preferable technical scheme that the connecting device comprises a tension adjusting component and a T-shaped leveling piece, and the T-shaped leveling piece is clamped between the two stress blocks; t type leveling spare one end is provided with the flat board portion, the atress piece is close to one side of stress cambered surface is provided with the perpendicular to the plane portion of protection angle spare symmetry axis, when fixed plane portion with the laminating of flat board portion. The accuracy of the protective corner fitting during installation is guaranteed, 90 degrees after final forming is guaranteed, and meanwhile the T-shaped leveling member is evenly stressed.
The invention has the preferable technical scheme that the tension adjusting assembly comprises a step shaft fixed at the other end of the T-shaped leveling member, an adjusting screw cap is rotatably connected to the step shaft, the tension adjusting assembly also comprises a connecting stud fixed on the stress tube, and the adjusting screw cap is in threaded connection with the connecting stud. The tension force can be conveniently adjusted.
The invention has the preferable technical scheme that the step shaft comprises a fixed rod part fixed on the T-shaped leveling part and a limiting step part at the end part, a limiting ring is arranged at the end part of the adjusting nut, the limiting ring is rotationally connected to the fixed rod part, and the limiting step part is abutted against the limiting ring.
The invention has the preferable technical scheme that a reinforcing steel bar frame is arranged at the end part of the wall body plate and extends into the grouting cavity. Can be used for injecting cement slurry to enable the curing and connection into a whole.
The invention has the preferable technical scheme that the outer side wall of the wall body plate is provided with a containing groove, and two side edges of the corner protection piece are positioned in the containing groove during installation. Prevent the protection corner fittings from protruding to influence the beauty.
A method for installing an assembly type disassembly-free template for building assembly comprises the following steps of S00: vertically placing the two wall body plates to enable the two wall body plates to be perpendicular to each other, and then placing the stress tube between the two wall body plates; step S10: the protection corner piece is placed on the outer side of the wall body plates, and the angles of the two wall body plates are adjusted to enable the two wall body plates to be attached to the protection corner piece; step S20: inserting the T-shaped leveling piece between the two stress blocks, and connecting the adjusting screw cap with the connecting stud to form a whole; step S30: and injecting cement slurry into the grouting cavity to be solidified and connected into a whole.
The preferable technical scheme of the invention is that in the step S20, the flat plate part of the T-shaped leveling part is firstly attached to the flat surface part of the stress block, then the stress pipe is rotated, so that the adjusting nut is butted with the connecting stud, and the adjusting nut is continuously screwed so as to provide tension for the protective corner part.
The invention has the beneficial effects that:
the invention provides an assembly type disassembly-free template for building assembly, which comprises two wall body plates and a protective corner piece, wherein the two wall body plates are arranged vertically; the corner protection piece is fixed on the outer side of the corner connection part of the two wall body plates, stress pipes are arranged on the inner side of the corner connection part of the two wall body plates, and a grouting cavity is formed between the two wall body plates and the corner protection piece through the stress pipes; and a plurality of connecting devices are arranged between the corner protection piece and the stress pipe, the connecting devices provide tension for the corner protection piece so that the corner protection piece has a movement trend towards the wall body plate, and the connecting devices are positioned in the grouting cavity. The corner protection piece is tightly connected through the connecting device, so that the corner protection piece is not easy to break away from and damage when being impacted, and meanwhile, the stress pipe enables the strength of the corner of the wall body to be increased, and stress concentration is avoided.
Drawings
FIG. 1 is a schematic view of an assembled non-dismantling formwork for building assembly according to an embodiment of the present invention;
FIG. 2 is a schematic plan view of an assembled non-dismantling formwork for building assembly according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a connection device provided in an embodiment of the present invention;
in the figure:
1. a wall body plate; 2. a corner protector; 3. a connecting device; 4. a stress tube; 5. grouting a cavity; 11. a steel bar frame; 21. a stress block; 22. a stress cambered surface; 211. a planar portion; 31. a T-shaped leveling member; 32. a tension adjustment assembly; 311. a flat plate portion; 321. a step shaft; 322. a limiting step part; 323. adjusting the screw cap; 324. a limiting ring; 325. and connecting a stud.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 1-3, the present embodiment provides an assembly type non-dismantling formwork for building assembly, which includes two wall panels 1 and a protective corner member 2, wherein the two wall panels are arranged perpendicular to each other; the corner protection pieces 2 are fixed on the outer sides of the corner connecting parts of the two wall body plates 1, materials are selected for the corner protection pieces 2 according to the positions of the walls, and when the corners are located at the main bearing positions, the corner protection pieces 2 are made of steel materials and play a role in supporting and reinforcing. When the corner is located at the non-stressed position, the protective corner piece 2 is made of plastic materials and only plays a role in decoration and protection. Stress pipes 4 are arranged on the inner sides of the corner joints of the two wall body plates 1, and grouting cavities 5 are formed between the two wall body plates 1 and the corner protection members 2 through the stress pipes 4; the stress tube 4 may provide a better barrier when injecting grout in the grouting cavity 5. At the same time, the stress tube 4 can provide a large supporting force for the connecting device 3 and transmit the force to the wall body panel 1 through the stress tube 4. A plurality of connecting devices 3 are arranged between the corner protection piece 2 and the stress pipe 4, the connecting devices 3 provide tension for the corner protection piece 2, so that the corner protection piece 2 has a movement trend towards the wall body plate 1, and the connecting devices 3 are located in the grouting cavity 5. The corner protection piece 2 is tightly connected through the connecting device 3 and is integrally cast through a grouting space, so that the whole corner protection piece is firm and stable and is not easy to damage and drop. Through the tensioning force of adjusting connecting device 3 for it is inseparable to be connected with wall body board 1 to prevent angle spare 2, makes simultaneously after the slip casting, prevents that angle spare 2 has the effort of extrusion concrete, and prevent angle spare 2 and concrete joint strength height, thereby makes to connect the angle spare and be difficult for the damage that drops when receiving the impact force.
Preferably, two the wall body board 1 is close to the apex angle of stress tube 4 all is provided with the arc breach, and when fixed, stress tube 4's lateral wall and both sides the laminating of arc breach inner wall. Can effectively avoid stress concentration and can limit the stress tube 4. The wall panels 1 are butted at the top corners to avoid gaps and generally require overlapping installation, but this can result in the corner protector 2 not being accurately installed in place. Stress tube 4 that this application adopted installs at the top of two wall body boards 1 for when pouring into grout into grouting cavity 5, can be better block grout. Simultaneously because stress tube 4 is circular, can use stress tube 4 to adjust the contained angle as the pivot when installing two wall body boards 1 to ensure that the installation is accurate. Meanwhile, the stress tube 4 is arranged at the top corner, so that the bending resistance is improved, and the prefabricated template is often required to be carried during installation and is easy to damage. When the right angle position of tradition butt joint formula received the bending force, the effort can be concentrated on the right angle edge of one of them wall body board 1 to another wall body board 1 can use this limit to form the lever as the fulcrum, and the opposite side only need little effort will make the junction damage or fracture. And this application uses stress tube 4 afterwards, and two wall body boards 1 then stress tube 4 are rotatory, increase the lifting surface area through the arc breach simultaneously, can not constitute the atress lever to be difficult to buckle the damage.
Preferably, a stress arc surface 22 is arranged at a position, in the grouting cavity 5, on the inner side of the corner protection part 2, so that the section of the grouting cavity 5 forms a sector shape; two stress blocks 21 are symmetrically arranged on the stress arc surface 22 along the symmetry axis of the protective corner fitting 2, the stress blocks 21 extend into the grouting cavity 5, and the connecting device 3 is connected with the stress blocks 21. The sharp part of the corner protection piece 2 is not easy to damage, force can be well transferred through the stress block 21, and the corner protection piece 2 is ensured to be firmly connected. Atress piece 21 is as an organic whole with protection corner fittings 2 body coupling, and atress piece 21 extends to slip casting cavity 5, and after pouring into grout in slip casting cavity 5, atress piece 21 is by firm fixed to protection corner fittings 2 is difficult to drop.
Further, the connecting device 3 comprises a tension adjusting assembly 32 and a T-shaped leveling member 31, and the T-shaped leveling member 31 is clamped between the two stress blocks 21; t type leveling 31 one end is provided with dull and stereotyped portion 311, the atress piece 21 is close to one side of stress cambered surface 22 is provided with the perpendicular to the plane portion 211 of angle of protection part 2 symmetry axis, when fixed plane portion 211 with the laminating of dull and stereotyped portion 311. The accuracy of the angle protection part 2 in installation is guaranteed, the angle after final forming is 90 degrees, and meanwhile the stress of the T-shaped leveling part 31 is uniform. The force-bearing blocks 21 are symmetrically arranged on both sides of the symmetry axis, so that the acting force is along the symmetry axis after the tension adjusting assembly 32 is installed. Therefore, the two sides of the corner protection piece 2 are stressed in a balanced manner and are not easy to deviate towards one side. At the same time, the stress tube 4 is ensured to be arranged at the central position and not to deviate to one side. Whether the installation is accurate can be judged by observing whether the plane part 211 is attached to the flat plate part 311 or not and whether a gap exists between the stress tube 4 and the wall body plate 1 or not. Meanwhile, the included angle between the two wall body plates 1 can be ensured to be 90 degrees.
Preferably, the tension adjusting assembly 32 includes a step shaft 321 fixed to the other end of the T-shaped leveling member 31, the step shaft 321 is rotatably connected to an adjusting nut 323, the tension adjusting assembly 32 further includes a connecting stud 325 fixed to the stress tube 4, and the adjusting nut 323 is in threaded connection with the connecting stud 325. The tension force can be conveniently adjusted. Further, the step shaft 321 includes a fixed rod portion fixed on the T-shaped leveling member 31 and a limiting step portion 322 at an end portion, a limiting ring 324 is disposed at the end portion of the adjusting nut 323, the limiting ring 324 is rotatably connected to the fixed rod portion, and the limiting step portion 322 abuts against the limiting ring 324. By tightening the adjusting nut 323, the force of the T-shaped leveling member 31 on the corner protector 2 can be adjusted. Through certain pulling force effort for angle bead spare 2 closely laminates with wall body board 1, and can produce an inflation effort when injecting grout in slip casting cavity 5, and the pulling force that the pulling force adjusting part 32 produced can effectively avoid breaking away from between angle bead spare 2 and the wall body board 1 and produce the clearance.
Preferably, the end of the wall body plate 1 is provided with a reinforcing steel bar frame 11 extending into the grouting cavity 5. Can be used for injecting cement slurry to enable the curing and connection into a whole. Furthermore, the lateral wall of the wall body plate 1 is provided with a holding groove, and during installation, the two side edges of the corner protection piece 2 are both positioned in the holding groove. The appearance is prevented from being influenced by the protrusion of the corner protection piece 2. After cement slurry is injected into the grouting cavity 5, the reinforcing steel bars extending from the ends of the wall body plates 1 are also solidified in the cement, so that the integral connection is firm.
A method for installing an assembly type disassembly-free template for building assembly comprises the following steps of S00: vertically placing the two wall body plates 1 to enable the two wall body plates 1 to be perpendicular to each other, and then placing the stress tube 4 between the two wall body plates 1; meanwhile, in order to further increase the strength, a steel wire mesh frame can be built at the joint, so that the grouting is firmer. Step S10: placing the corner protection piece 2 on the outer side of the wall body plates 1, and adjusting the angles of the two wall body plates 1 to enable the two wall body plates to be attached to the corner protection piece 2; the two side edges of the corner protection piece 2 can be further connected with the wall body plate 1 by adopting an adhesive mode or other fixing modes, and the stress cambered surface 22 in the middle part is directly connected by cement paste curing. Step S20: inserting the T-shaped leveling member 31 between the two stress blocks 21, and connecting the adjusting nut 323 and the connecting stud 325 to form a whole; step S30: and injecting cement slurry into the grouting cavity 5 to be solidified and connected into a whole.
Further, in step S20, the flat plate portion 311 of the T-shaped leveling member 31 is first attached to the flat surface portion 211 of the force-receiving block 21, then the stress tube 4 is rotated, so that the adjusting nut 323 is abutted to the connecting stud 325, and the adjusting nut 323 is continuously tightened to provide a pulling force to the corner protector 2. Through the planar cooperation, increase tensile while can the adaptive adjusting position for the installation is accurate.
While the invention has been described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.
Claims (5)
1. The utility model provides a building assembly is with assembled form of exempting from to tear open which characterized in that:
comprises two wall body plates (1) and a protective corner piece (2) which are arranged vertically; the corner protection piece (2) is fixed on the outer side of the corner connecting part of the two wall body plates (1), the inner side of the corner connecting part of the two wall body plates (1) is provided with a stress pipe (4), and a grouting cavity (5) is formed between the two wall body plates (1) and the corner protection piece (2) through the stress pipe (4);
a plurality of connecting devices (3) are arranged between the corner protection piece (2) and the stress pipe (4), the connecting devices (3) provide tension for the corner protection piece (2) so that the corner protection piece (2) has a moving trend close to the wall body plate (1), and the connecting devices (3) are positioned in the grouting cavity (5);
arc-shaped notches are formed in the top corners, close to the stress tubes (4), of the two wall body plates (1), and when the wall body plates are fixed, the outer side walls of the stress tubes (4) are attached to the inner walls of the arc-shaped notches on the two sides;
a stress cambered surface (22) is arranged at the position, in the grouting cavity (5), of the inner side of the corner protection piece (2), so that the section of the grouting cavity (5) forms a fan shape;
two stress blocks (21) are symmetrically arranged on the stress arc surface (22) along the symmetry axis of the protective corner fitting (2), the stress blocks (21) extend into the grouting cavity (5), and the connecting device (3) is connected with the stress blocks (21);
the connecting device (3) comprises a tension adjusting component (32) and a T-shaped leveling part (31), and the T-shaped leveling part (31) is clamped between the two stress blocks (21);
one end of the T-shaped leveling part (31) is provided with a flat plate part (311), one side of the stress block (21) close to the stress arc surface (22) is provided with a flat part (211) vertical to the symmetry axis of the corner protection part (2), and the flat part (211) is attached to the flat plate part (311) during fixing;
the tension adjusting assembly (32) comprises a step shaft (321) fixed to the other end of the T-shaped leveling part (31), an adjusting screw cap (323) is connected to the step shaft (321) in a rotating mode, the tension adjusting assembly (32) further comprises a connecting stud (325) fixed to the stress pipe (4), and the adjusting screw cap (323) is in threaded connection with the connecting stud (325);
step axle (321) is including being fixed in spacing step portion (322) of fixed pole portion and tip on T type leveling piece (31), adjusting nut (323) tip is provided with spacing ring (324), spacing ring (324) rotate connect in on the fixed pole portion, spacing step portion (322) with spacing ring (324) offset.
2. The assembly disassembly-free form for building assembly of claim 1, wherein:
the end part of the wall body plate (1) is provided with a steel bar frame (11) which extends into the grouting cavity (5).
3. The assembly disassembly-free form for building assembly of claim 1, wherein:
the outer side wall of the wall body plate (1) is provided with a containing groove, and two side edges of the corner protection piece (2) are located in the containing groove during installation.
4. The method for installing the fabricated disassembly-free formwork for building assembly according to claim 1, wherein:
the method comprises the following steps of S00: vertically placing two wall body plates (1) to enable the two wall body plates (1) to be perpendicular to each other, and then placing a stress tube (4) between the two wall body plates (1);
step S10: placing the protective corner pieces (2) on the outer sides of the wall body plates (1), and adjusting the angles of the two wall body plates (1) to enable the two wall body plates to be attached to the protective corner pieces (2);
step S20: inserting the T-shaped leveling member (31) between the two stress blocks (21), and connecting the adjusting screw cap (323) with the connecting stud (325) to form a whole;
step S30: and injecting cement slurry into the grouting cavity (5) to be solidified and connected into a whole.
5. The method for installing the fabricated disassembly-free form for building assembly according to claim 4, wherein:
in step S20, the flat plate portion (311) of the T-shaped leveling member (31) is first attached to the flat surface portion (211) of the stress block (21), then the stress tube (4) is rotated, so that the adjusting nut (323) is abutted to the connecting stud (325), and the adjusting nut (323) is continuously tightened to provide tension to the corner protection member (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111616330.XA CN114250888B (en) | 2021-12-27 | 2021-12-27 | Assembly type disassembly-free template for building assembly and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111616330.XA CN114250888B (en) | 2021-12-27 | 2021-12-27 | Assembly type disassembly-free template for building assembly and installation method |
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| Publication Number | Publication Date |
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| CN114250888A CN114250888A (en) | 2022-03-29 |
| CN114250888B true CN114250888B (en) | 2023-03-31 |
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| CN202111616330.XA Active CN114250888B (en) | 2021-12-27 | 2021-12-27 | Assembly type disassembly-free template for building assembly and installation method |
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| WO2018119546A1 (en) * | 2016-12-27 | 2018-07-05 | 郭榕来 | Composite building template compound system |
| CN108286301A (en) * | 2018-04-24 | 2018-07-17 | 中清大装配式建筑有限公司 | A kind of fabricated shear wall and its assembly construction method with corner |
| CN208441304U (en) * | 2018-05-22 | 2019-01-29 | 李凤东 | A kind of LH assembled cast-in-place concrete shear wall is with exempting from demoulding shell |
| CN210598117U (en) * | 2019-08-23 | 2020-05-22 | 吉林云亭石墨烯技术股份有限公司 | Graphite alkene presss from both sides core thermal insulation wall body and exempts from to tear open template structure |
| CN112878678A (en) * | 2021-03-19 | 2021-06-01 | 王非 | Assembly type disassembly-free formwork supporting system and manufacturing method of disassembly-free formwork system |
| CN113250344A (en) * | 2021-05-25 | 2021-08-13 | 江苏省苏中建设集团股份有限公司 | Assembled dampproofing building wall |
| CN215253541U (en) * | 2021-05-28 | 2021-12-21 | 河南金鼎远大住宅科技发展有限公司 | Edge protection device for prefabricated concrete component |
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2021
- 2021-12-27 CN CN202111616330.XA patent/CN114250888B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018119546A1 (en) * | 2016-12-27 | 2018-07-05 | 郭榕来 | Composite building template compound system |
| CN108286301A (en) * | 2018-04-24 | 2018-07-17 | 中清大装配式建筑有限公司 | A kind of fabricated shear wall and its assembly construction method with corner |
| CN208441304U (en) * | 2018-05-22 | 2019-01-29 | 李凤东 | A kind of LH assembled cast-in-place concrete shear wall is with exempting from demoulding shell |
| CN210598117U (en) * | 2019-08-23 | 2020-05-22 | 吉林云亭石墨烯技术股份有限公司 | Graphite alkene presss from both sides core thermal insulation wall body and exempts from to tear open template structure |
| CN112878678A (en) * | 2021-03-19 | 2021-06-01 | 王非 | Assembly type disassembly-free formwork supporting system and manufacturing method of disassembly-free formwork system |
| CN113250344A (en) * | 2021-05-25 | 2021-08-13 | 江苏省苏中建设集团股份有限公司 | Assembled dampproofing building wall |
| CN215253541U (en) * | 2021-05-28 | 2021-12-21 | 河南金鼎远大住宅科技发展有限公司 | Edge protection device for prefabricated concrete component |
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|---|---|
| CN114250888A (en) | 2022-03-29 |
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