CN220203072U - Vertical connecting device of assembled prefabricated shear wall - Google Patents

Vertical connecting device of assembled prefabricated shear wall Download PDF

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Publication number
CN220203072U
CN220203072U CN202321671270.6U CN202321671270U CN220203072U CN 220203072 U CN220203072 U CN 220203072U CN 202321671270 U CN202321671270 U CN 202321671270U CN 220203072 U CN220203072 U CN 220203072U
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China
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shear wall
prefabricated shear
anchor plate
plate
vertical
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CN202321671270.6U
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Inventor
许志鹏
王孜晗
王绍督
季森森
高惠
周玉姣
李丹
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Jinan Railway Real Estate Construction Group Co ltd
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Jinan Railway Real Estate Construction Group Co ltd
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Abstract

The utility model provides a vertical connecting device for an assembled prefabricated shear wall, and belongs to the field of building construction. The technical proposal is as follows: comprises an upper component and a lower component; the upper assembly comprises an upper anchor plate arranged on the bottom surface of the upper prefabricated shear wall, a plurality of through square holes I are formed in the upper anchor plate, and a T-shaped plate is arranged on the bottom surface of the upper prefabricated shear wall in the square holes I; the lower assembly comprises a lower anchor plate arranged on the bottom surface of the lower prefabricated shear wall, a plurality of square holes II are formed in the lower anchor plate, grooves are formed in the bottom surface of the upper prefabricated shear wall in the square holes II, a vertical plate and a transverse plate are arranged in the grooves, slots penetrating into the corresponding grooves are formed in the side surfaces of two sides of the lower prefabricated shear wall, inserting plates are arranged in the slots, and the inserting plates on two sides are arranged above the transverse plate. The beneficial effects of the utility model are as follows: the method can save a lot of manpower, obviously shorten the construction period, and is easy to position and high in installation accuracy when assembling the prefabricated shear wall.

Description

Vertical connecting device of assembled prefabricated shear wall
Technical Field
The utility model relates to the field of building construction, in particular to a vertical connecting device for an assembled prefabricated shear wall.
Background
Shear walls are a very widely used type of component in construction engineering for bearing vertical loads (e.g., self-weight of a building, load in use, etc.) and horizontal actions (e.g., wind, horizontal earthquake, etc.). In combination, shear walls are subjected to shear forces, bending moments, compressive forces and tensile forces.
The manner in which shear walls are constructed is generally referred to as "cast-in-place" and "assembled". "cast-in-place" is a traditional construction: binding reinforcing steel bars on a construction site, erecting a template and a bracket, injecting concrete into the template, vibrating and compacting, and dismantling the template after the concrete reaches a certain strength; "Assembly" is a new construction that is adapted to the development of building industrialization: and manufacturing the prefabricated shear wall components in a factory, reserving connecting devices, hoisting the upper prefabricated shear wall and the lower prefabricated shear wall in place on a construction site, temporarily fixing, and properly connecting through the reserved connecting devices. The connecting devices need to have enough bearing capacity to bear internal forces such as tensile force, compressive force, bending moment, shearing force and the like borne by the shear wall. Compared with a cast-in-situ mode, the method for constructing the shear wall by using the assembly method can save construction period, labor, material consumption and field pollution emission, and achieve the purposes of energy conservation and environmental protection. Therefore, "fitting" is an important direction of development of the present construction engineering.
When prefabricated shear wall interconnect assembly, need solve two types of piece connecting device: 1) A horizontal joint connecting device, namely a vertical connecting device, between the upper prefabricated shear wall and the lower prefabricated shear wall; 2) Vertical seam connecting device between adjacent prefabricated shear walls of same floor.
Aiming at the vertical connecting device, a sleeve grouting connecting device is often adopted to connect in the prior art. Specifically, a sleeve is arranged at the bottom of an upper prefabricated shear wall, and the bottom ends of upper connecting steel bars in the upper prefabricated shear wall are inserted into the sleeve from the top of the sleeve. The top ends of the lower connecting steel bars in the lower prefabricated shear wall protrude out of the top surface of the lower prefabricated shear wall. When the lower prefabricated shear wall is installed, the upper prefabricated shear wall is aligned with the lower prefabricated shear wall, the lower connecting steel bars are inserted into the sleeve from the bottom of the sleeve, and a gap of 20mm is reserved between the bottom surface of the upper prefabricated shear wall and the top surface of the lower prefabricated shear wall. And arranging a bracket to position the upper prefabricated shear wall. And pouring slurry into the sleeve until the slurry fills the interior of the sleeve and the gap between the upper prefabricated shear wall and the lower prefabricated shear wall. And after the slurry is cured to reach a certain strength, removing the bracket for supporting the upper prefabricated shear wall.
The number of the vertically distributed steel bars in the prefabricated shear wall is usually not less than 2, the spacing between the vertically distributed steel bars in the same vertical face is generally not more than 200mm, and tens of vertically distributed steel bars in each prefabricated shear wall are moved. In order to ensure that the bearing capacity of the connecting device is not lower than that of other parts of the precast shear wall, the strength and the area of the upper connecting steel bars and the lower connecting steel bars cannot be lower than those of vertically distributed steel bars in the precast shear wall. According to the prior art that adopts sleeve grouting connecting device, sleeve quantity is the same with the vertical reinforcing bar root number in last prefabricated shear force wall and the prefabricated shear force wall down, and this just needs a lot of sleeves, and material cost is very high, and every sleeve all needs pre-buried position accurate, and need to grout in the sleeve, and the doing degree of difficulty is higher like this, and consumes man-hour, for this application provides a vertical connecting device of prefabricated shear force wall of assembled and solves above-mentioned problem.
Disclosure of Invention
The utility model aims to provide an assembled prefabricated shear wall vertical connecting device which is simple to operate and high in installation efficiency.
The utility model is realized by the following measures:
the vertical connecting device of the prefabricated shear wall is characterized by comprising an upper assembly and a lower assembly matched with the upper assembly;
the upper assembly comprises an upper anchor plate arranged on the bottom surface of an upper precast shear wall, a plurality of through square holes I are formed in the upper anchor plate, T-shaped plates are arranged on the bottom surface of the upper precast shear wall in the square holes I, each T-shaped plate comprises a vertical plate, a transverse plate is arranged on the end surface of the lower side of each vertical plate, and the transverse plates are symmetrical with the middle section of each vertical plate;
the lower assembly comprises a lower anchor plate arranged on the bottom surface of a lower prefabricated shear wall, a plurality of square holes II are formed in the lower anchor plate, grooves are formed in the bottom surface of the upper prefabricated shear wall in the square holes II, the vertical plates and the transverse plates are arranged in the grooves, the size of the grooves is larger than that of the transverse plates, so that adjustment allowance is reserved, the problem that assembly cannot be performed due to manufacturing errors of the prefabricated walls is avoided, slots penetrating into the corresponding grooves are formed in the side surfaces of two sides of the lower prefabricated shear wall, inserting plates are arranged in the slots, and the inserting plates on two sides are all arranged above the transverse plates;
the upper anchor plate and the lower anchor plate are connected through an anchor plate edge weld.
During assembly, the upper prefabricated shear wall is hoisted above the lower prefabricated shear wall and aligned, so that the upper anchor plate and the lower anchor plate are tightly attached, meanwhile, the T-shaped plate is inserted into the groove, then the inserting plates are inserted into the inserting grooves from two sides, the inserting plates are abutted against the side surfaces of the vertical plates, and then welding and fixing are carried out along the contact edges between the upper anchor plate and the lower anchor plate.
The utility model has the specific characteristics that:
the embedded boards are arranged on the side surfaces of the upper side and the lower side in the slot, the inserting boards are arranged between the embedded boards on the two sides, the inserting boards are connected and fixed with the embedded boards on the two sides through welding seams at the contact edges, namely, after the inserting boards are inserted, the inserting boards are fixed with the embedded boards on the two sides through welding.
The upper assembly further comprises a plurality of upper connecting steel bars and a plurality of upper horizontal steel bars which are arranged in the upper prefabricated shear wall;
the upper side surface of the vertical plate and the upper surface of the upper anchor plate are fixedly connected with the lower ends of a plurality of corresponding upper connecting steel bars, the upper side surface of the vertical plate and the upper surface of the upper anchor plate are respectively provided with a plurality of corresponding upper horizontal steel bars, one side of each upper horizontal steel bar is fixedly connected with the upper connecting steel bars on the corresponding side, and the connection among the parts such as the upper connecting steel bars, the upper anchor plate, the vertical plate and the upper horizontal steel bars is realized in a welding mode;
the lower assembly further comprises a plurality of lower connecting steel bars and a plurality of lower horizontal steel bars which are arranged in the lower prefabricated shear wall;
the lower surface and the two sides of the lower anchor plate are far away from the outer side surface of the embedded plate and are fixedly connected with a plurality of corresponding lower connecting steel bars, the lower surface and the two sides of the lower anchor plate are far away from the outer side surface of the embedded plate and are respectively provided with a plurality of corresponding lower horizontal steel bars, one side of each lower horizontal steel bar is fixedly connected with the corresponding lower connecting steel bars, and the connection among the lower anchor plate, the two sides of the embedded plate, the lower connecting steel bars, the lower horizontal steel bars and other parts is realized in a welding mode.
The side surface of the lower prefabricated shear wall is provided with a grouting hole penetrating into the corresponding groove, slurry is poured into the groove, grouting is conducted into the groove through the grouting hole, and the slurry is fine stone concrete, scrap iron cement mortar or cement mortar added with a micro-expansion agent.
The depth of the upper connecting steel bars extending into the upper prefabricated shear wall is not smaller than 15 times of the diameter of the upper connecting steel bars, and the upper horizontal steel bars are perpendicular to the length direction of the upper prefabricated shear wall.
The depth of the lower connecting steel bars extending into the lower prefabricated shear wall is not smaller than 15 times of the diameter of the lower connecting steel bars, and the lower horizontal steel bars are perpendicular to the length direction of the lower prefabricated shear wall.
The width of the upper anchor plate or the lower anchor plate is smaller than that of the upper precast shear wall or the lower precast shear wall, and the gap where the upper anchor plate and the lower anchor plate are located can be filled with concrete and leveled with the upper precast shear wall or the lower precast shear wall surface.
Gaps are reserved between the outer side ends of the embedded plate and the inserting plate on both sides and the outer side opening of the inserting groove, and concrete is filled in the gaps to seal and smooth.
Working principle: the method comprises the steps that an upper prefabricated shear wall and a lower prefabricated shear wall are manufactured in a factory and then transported to a construction site for installation, the upper prefabricated shear wall is hoisted above the lower prefabricated shear wall and aligned when assembled, so that the upper anchor plate and the lower anchor plate are tightly attached, meanwhile, the T-shaped plate is inserted into a groove, then inserting the inserting plate from the two sides into the inserting grooves, enabling the inserting plate to abut against the side face of the vertical plate, then welding and fixing the inserting plate along the contact edge between the upper anchor plate and the lower anchor plate, inserting the inserting plate between the embedded plates at the two sides, ensuring that the inner side of the inserting plate abuts against the side face of the vertical plate, welding and fixing the inserting plate with the upper embedded plate and the lower embedded plates at the two sides, then pouring slurry into the groove through the grouting holes, filling concrete with fine stone, iron filings, cement mortar or cement mortar added with micro-expansion agents into the gap between the upper anchor plate and the lower anchor plate, filling the concrete into the gap between the upper anchor plate and the shear wall and the lower prefabricated shear wall or leveling the gap between the upper prefabricated shear wall and the lower prefabricated wall and the precast wall are filled.
The beneficial effects of the utility model are as follows:
1. the method saves time and labor in assembly, and can be used for continuously assembling the prefabricated shear wall upwards without maintaining and pouring slurry for a long time after the field welding is finished;
2. the utility model does not influence the arrangement of horizontal distributed steel bars in the precast shear wall;
3. compared with the prior art, the utility model has the advantages of obvious manual workload and less time consumption, does not influence other construction operations in a room, and does not damage a floor surface layer;
4. by adopting the utility model, because the number of the connecting pieces is small, the positioning is easy and the installation accuracy is high when the prefabricated shear wall is assembled.
Drawings
Fig. 1 is a schematic overall structure of an embodiment of the present utility model.
FIG. 2 is a schematic view of an upper prefabricated shear wall in an embodiment of the present utility model.
FIG. 3 is a schematic view of a lower prefabricated shear wall according to an embodiment of the present utility model.
FIG. 4 is a schematic diagram of a partial cross-sectional structure of an embodiment of the present utility model after connection of an upper precast shear wall and a lower precast shear wall.
FIG. 5 is a schematic view of a partial cross-sectional structure of a lower prefabricated shear wall according to an embodiment of the present utility model.
Wherein, the reference numerals are as follows: 1. the upper prefabricated shear wall; 2. an upper anchor plate; 3. a lower anchor plate; 4. embedding a plate; 5. inserting plate; 6. grouting holes; 7. a lower prefabricated shear wall; 8. a riser; 9. a cross plate; 10. a groove; 11. a slot; 12. a connecting steel bar is arranged on the upper part; 13. a horizontal reinforcing steel bar is arranged on the upper part; 14. lower horizontal steel bars; 15. and the lower connecting steel bars.
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.
Referring to fig. 1-5, a fabricated precast shear wall vertical connection device includes an upper assembly and a lower assembly mated with the upper assembly;
the upper assembly comprises an upper anchor plate 2 arranged on the bottom surface of the upper precast shear wall 1, a plurality of square holes I which are communicated are formed in the upper anchor plate 2, a T-shaped plate is arranged on the bottom surface of the upper precast shear wall 1 in the square holes I, the T-shaped plate comprises a vertical plate 8, a transverse plate 9 is arranged on the end surface of the lower side of the vertical plate 8, and the transverse plate 9 is symmetrical with the middle section of the vertical plate 8;
the lower assembly comprises a lower anchor plate 3 arranged on the bottom surface of a lower prefabricated shear wall 7, a plurality of square holes II which are communicated are formed in the lower anchor plate 3, a groove 10 is formed in the bottom surface of an upper prefabricated shear wall 1 in the square holes II, a vertical plate 8 and a transverse plate 9 are arranged in the groove 10, the size of the groove 10 is larger than that of the transverse plate 9 so as to leave an adjusting allowance, the problem that the assembly cannot be performed due to manufacturing errors of the prefabricated wall is avoided, slots 11 which are communicated into the corresponding grooves 10 are formed in the side surfaces of two sides of the lower prefabricated shear wall 7, inserting plates 5 are arranged in the slots 11, and the inserting plates 5 on two sides are arranged above the transverse plate 9;
the upper anchor plate 2 and the lower anchor plate 3 are connected through an anchor plate edge weld.
During assembly, the upper prefabricated shear wall 1 is hoisted above the lower prefabricated shear wall 7 and aligned, so that the upper anchor plate 2 and the lower anchor plate 3 are tightly attached, meanwhile, the T-shaped plate is inserted into the groove 10, then the inserting plate 5 is inserted into the inserting grooves 11 at two sides, the inserting plate 5 is abutted against the side face of the vertical plate 8, and then welding and fixing are carried out along the contact edge between the upper anchor plate 2 and the lower anchor plate 3.
The embedded plates 4 are arranged on the side surfaces of the upper side and the lower side in the slot 11, the plugboard 5 is arranged between the embedded plates 4 on the two sides, the plugboard 5 is connected and fixed with the embedded plates 4 on the two sides through welding seams at the contact edges, namely, after the plugboard 5 is inserted, the plugboard 5 is fixed with the embedded plates 4 on the two sides through welding.
The upper assembly further comprises a plurality of upper connecting steel bars 12 and a plurality of upper horizontal steel bars 13 which are arranged in the upper prefabricated shear wall 1;
the upper side surface of the vertical plate 8 and the upper surface of the upper anchor plate 2 are fixedly connected with the lower ends of a plurality of corresponding upper connecting steel bars 12, a plurality of corresponding upper horizontal steel bars 13 are arranged on the upper side surface of the vertical plate 8 and the upper surface of the upper anchor plate 2, one side of each upper horizontal steel bar 13 is fixedly connected with the corresponding upper connecting steel bar 12 on one side, and the connection among the specific upper connecting steel bars 12, the upper anchor plate 2, the vertical plate 8, the upper horizontal steel bars 13 and other parts is realized in a welding mode;
the lower assembly further comprises a plurality of lower connecting steel bars 15 and a plurality of lower horizontal steel bars 14 which are arranged in the lower prefabricated shear wall 7;
the lower surface of the lower anchor plate 3 and the outer side surfaces of the two side embedded plates 4 far away from the plugboard 5 are fixedly connected with a plurality of corresponding lower connecting steel bars 15, the lower surface of the lower anchor plate 3 and the outer side surfaces of the two side embedded plates 4 far away from the plugboard 5 are respectively provided with a plurality of corresponding lower horizontal steel bars 14, one side of each lower horizontal steel bar 14 is fixedly connected with the corresponding lower connecting steel bar 15 on one side, and the connection among the specific lower anchor plate 3, the two side embedded plates 4, the lower connecting steel bars 15, the lower horizontal steel bars 14 and other components is realized in a welding mode.
The side surface of the lower prefabricated shear wall 7 is provided with grouting holes 6 penetrating into corresponding grooves 10, slurry is poured into the grooves 10, grouting is conducted into the grooves 10 through the grouting holes 6, and the slurry is fine stone concrete, scrap iron cement mortar or cement mortar added with a micro-expanding agent.
The depth of the upper connecting steel bars 12 extending into the upper prefabricated shear wall 1 is not smaller than 15 times of the diameter of the upper connecting steel bars 12, and the upper horizontal steel bars 13 are perpendicular to the length direction of the upper prefabricated shear wall 1.
The depth of the lower connecting steel bars 15 extending into the lower prefabricated shear wall 7 is not smaller than 15 times of the diameter of the lower connecting steel bars 15, and the lower horizontal steel bars 14 are perpendicular to the length direction of the lower prefabricated shear wall 7.
The width of the upper anchor plate 2 or the lower anchor plate 3 is smaller than that of the upper precast shear wall 1 or the lower precast shear wall 7, and the gap where the upper anchor plate 2 and the lower anchor plate 3 are positioned can be filled with concrete and leveled with the wall surface of the upper precast shear wall 1 or the lower precast shear wall 7.
Gaps are reserved between the outer side ends of the embedded plates 4 and the inserting plates 5 on the two sides and the outer side openings of the inserting grooves 11, and concrete is filled in the gaps to seal and trowelling.
Working principle: the upper precast shear wall 1 and the lower precast shear wall 7 are manufactured in a factory and then transported to a construction site for installation, when the upper precast shear wall 1 is hoisted above and aligned with the lower precast shear wall 7, the upper anchor plate 2 and the lower anchor plate 3 are tightly attached, meanwhile, the T-shaped plate is inserted into the groove 10, the inserting plate 5 is inserted into the slots 11 at two sides and is abutted against the side surfaces of the vertical plates 8, then the welding fixation is carried out along the contact edges between the upper anchor plate 2 and the lower anchor plate 3, the inserting plate 5 is inserted between the embedded plates 4 at two sides, the inner sides of the inserting plate 5 are ensured to be abutted against the side surfaces of the vertical plates 8, then the inserting plate 5 is welded and fixed with the embedded plates 4 at the upper side and the lower side, then slurry is poured into the groove 10 through the grouting holes 6, the slurry adopts fine stone concrete, iron filings or cement mortar added with micro-expansion agents, and finally the gap between the upper anchor plate 2 and the lower anchor plate 3 is filled with concrete and the wall surface of the upper precast shear wall 1 or the lower precast shear wall 7 is flattened in the gap.
The technical features of the present utility model that are not described in the present utility model may be implemented by or using the prior art, and are not described in detail herein, but the above description is not intended to limit the present utility model, and the present utility model is not limited to the above examples, but is also intended to be within the scope of the present utility model by those skilled in the art.

Claims (9)

1. The vertical connecting device of the prefabricated shear wall is characterized by comprising an upper assembly and a lower assembly matched with the upper assembly;
the upper assembly comprises an upper anchor plate (2) arranged on the bottom surface of the upper prefabricated shear wall (1), a plurality of through square holes I are formed in the upper anchor plate (2), T-shaped plates are arranged on the bottom surface of the upper prefabricated shear wall (1) in the square holes I, each T-shaped plate comprises a vertical plate (8), and a transverse plate (9) is arranged on the end surface of the lower side of each vertical plate (8);
the lower assembly comprises a lower anchor plate (3) arranged on the bottom surface of a lower prefabricated shear wall (7), a plurality of square holes II are formed in the lower anchor plate (3), grooves (10) are formed in the bottom surface of the upper prefabricated shear wall (1) in the square holes II, vertical plates (8) and transverse plates (9) are arranged in the grooves (10), slots (11) penetrating into the corresponding grooves (10) are formed in the side surfaces of two sides of the lower prefabricated shear wall (7), inserting plates (5) are arranged in the slots (11), and the inserting plates (5) on two sides are arranged above the transverse plates (9);
the upper anchor plate (2) and the lower anchor plate (3) are connected through an anchor plate edge weld joint.
2. The vertical connecting device of the prefabricated shear wall according to claim 1, wherein embedded plates (4) are arranged on the upper side and the lower side in the slot (11), the inserting plates (5) are arranged between the embedded plates (4) on two sides, and the inserting plates (5) are fixedly connected with the embedded plates (4) on two sides through welding seams at contact edges.
3. The vertical connection of prefabricated shear walls according to claim 1, characterized in that the upper assembly further comprises a number of upper connection bars (12) and a number of upper horizontal bars (13) arranged inside the upper prefabricated shear wall (1);
the upper side of the vertical plate (8) and the upper surface of the upper anchor plate (2) are fixedly connected with the lower ends of the corresponding upper connecting steel bars (12), the upper side of the vertical plate (8) and the upper surface of the upper anchor plate (2) are respectively provided with a plurality of corresponding upper horizontal steel bars (13), and one side of each upper horizontal steel bar (13) is fixedly connected with the corresponding upper connecting steel bar (12).
4. The prefabricated shear wall vertical connection according to claim 2, wherein the lower assembly further comprises a number of lower connection bars (15) and a number of lower horizontal bars (14) arranged within the lower prefabricated shear wall (7);
the lower surface and the both sides of lower anchor plate (3) keep away from of pre-buried board (4) the lateral surface of picture peg (5) all with a plurality of correspondingly lower connecting reinforcement (15) fixed connection, the lower surface and the both sides of lower anchor plate (3) the lateral surface of keeping away from of pre-buried board (4) picture peg (5) all is provided with a plurality of correspondingly lower horizontal reinforcement (14), one side of lower horizontal reinforcement (14) with corresponding side lower connecting reinforcement (15) fixed connection.
5. The vertical connecting device of the prefabricated shear wall according to claim 1, wherein grouting holes (6) penetrating into the corresponding grooves (10) are arranged on the side face of the lower prefabricated shear wall (7), and slurry is poured into the grooves (10).
6. A prefabricated shear wall vertical connection according to claim 3, wherein the depth of the upper connection bar (12) extending into the upper prefabricated shear wall (1) is not less than 15 times the diameter of the upper connection bar (12), and the upper horizontal bar (13) is perpendicular to the length direction of the upper prefabricated shear wall (1).
7. The vertical connecting device for the prefabricated shear wall according to claim 4, wherein the depth of the lower connecting steel bars (15) extending into the lower prefabricated shear wall (7) is not less than 15 times of the diameter of the lower connecting steel bars (15), and the lower horizontal steel bars (14) are perpendicular to the length direction of the lower prefabricated shear wall (7).
8. The vertical connection of prefabricated shear walls according to claim 1, characterized in that the width of the upper anchor plate (2) or the lower anchor plate (3) is smaller than the width of the upper prefabricated shear wall (1) or the lower prefabricated shear wall (7).
9. The vertical connecting device of the prefabricated shear wall according to claim 2, wherein the embedded plates (4) and the outer ends of the plugboards (5) on both sides are respectively spaced from the outer openings of the slots (11).
CN202321671270.6U 2023-06-29 2023-06-29 Vertical connecting device of assembled prefabricated shear wall Active CN220203072U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321671270.6U CN220203072U (en) 2023-06-29 2023-06-29 Vertical connecting device of assembled prefabricated shear wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321671270.6U CN220203072U (en) 2023-06-29 2023-06-29 Vertical connecting device of assembled prefabricated shear wall

Publications (1)

Publication Number Publication Date
CN220203072U true CN220203072U (en) 2023-12-19

Family

ID=89151750

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321671270.6U Active CN220203072U (en) 2023-06-29 2023-06-29 Vertical connecting device of assembled prefabricated shear wall

Country Status (1)

Country Link
CN (1) CN220203072U (en)

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