CN214696218U - Connecting device between assembled shear wall units - Google Patents
Connecting device between assembled shear wall units Download PDFInfo
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- CN214696218U CN214696218U CN202023184882.1U CN202023184882U CN214696218U CN 214696218 U CN214696218 U CN 214696218U CN 202023184882 U CN202023184882 U CN 202023184882U CN 214696218 U CN214696218 U CN 214696218U
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Abstract
The utility model discloses a connecting device between assembled shear force wall unit, including upper junction plate, lower connecting plate and steel pipe concrete short column, its characterized in that: the upper connecting plate is provided with a mounting hole through which the lower end of a longitudinal rib of the edge member of the assembled shear wall unit can pass and is connected with the edge member of the assembled shear wall unit, the lower connecting plate is provided with a mounting hole through which the upper end of a longitudinal rib of the edge member of the assembled shear wall unit can pass and is connected with the edge member of the assembled shear wall unit, and the concrete filled steel tube short column is used for fixedly connecting the upper connecting plate and the lower connecting plate, so that the assembled shear wall units are vertically connected into a whole or are horizontally and vertically connected into a whole.
Description
Technical Field
The utility model belongs to the assembly type structure field, concretely relates to connecting device between assembly type shear force wall unit.
Background
The existing prefabricated shear wall connection mode along the building height direction mainly comprises a grouting sleeve connection technology, a preformed hole slurry anchor lap joint connection technology and a cast-in-place belt connection mode. The grouting sleeve connection is one of more applications and mature construction technology in actual engineering, but the problems of difficult field butt joint, difficult guarantee of grouting quality in the sleeve and difficult later quality inspection still exist; in addition, the sleeve is large in diameter, and in order to ensure the position of the longitudinal ribs in the shear wall, the thickness of the concrete protective layer outside the sleeve is relatively reduced, so that the long-term durability of the structure can be influenced. Therefore, a connecting device between assembled shear wall units, which is convenient to connect, reliable in stress and convenient for later detection, is needed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses solve the lower problem of quality testing difficulty and installation effectiveness that grout muffjoint exists among the current assembled shear wall structure.
In order to realize the purpose, the utility model discloses a following technical scheme:
the utility model provides a connecting device between assembled shear force wall unit, includes upper junction plate, lower connecting plate and steel pipe concrete short column, its characterized in that: the upper connecting plate is provided with a mounting hole through which the lower end of a longitudinal rib of the edge member of the assembled shear wall unit can pass and is connected with the edge member of the assembled shear wall unit, the lower connecting plate is provided with a mounting hole through which the upper end of a longitudinal rib of the edge member of the assembled shear wall unit can pass and is connected with the edge member of the assembled shear wall unit, and the concrete filled steel tube short column is used for fixedly connecting the upper connecting plate and the lower connecting plate, so that the assembled shear wall units are vertically connected into a whole or are horizontally and vertically connected into a whole.
Further, the concrete filled steel tube stub may be replaced by: steel plates, steel pipes, i-beams, steel reinforced concrete or other elements capable of fixedly connecting the upper and lower connection plates, preferably by welding, and at least capable of being pulled and pressed.
Furthermore, the longitudinal ribs of the assembled shear wall unit are fixedly connected with the upper connecting plate or the lower connecting plate through welding or nuts.
Furthermore, the steel pipe concrete short column is geometrically centered by one end of the hollow steel pipe and the lower connecting steel plate and is connected through a welding seam, then concrete is poured, a port is ground flat or high-strength cement mortar is filled after the concrete is cured, and the upper connecting plate is geometrically centered with the steel pipe and is connected through the welding seam.
Further, when the connecting device is installed, the extending length of the end part of the longitudinal bar of the assembled shear wall unit needs to meet the requirement of welding or connection with a nut, and the horizontally distributed reinforcing bars and the vertically distributed reinforcing bars do not extend outwards.
Further, the edge member of the fabricated shear wall unit is provided with a notch to provide a space for installing the connecting device.
Further, gaps are arranged at the lower ends of the edge members of the assembled shear wall units to provide space for installing the connecting devices.
Further, the upper connecting plate and the lower connecting plate are rectangular, L-shaped, T-shaped or cross-shaped.
Further, the cross section of the concrete filled steel tube short column is rectangular, L-shaped, T-shaped or cross-shaped, so that the plane arrangement of the fabricated shear wall is adapted.
Furthermore, the steel pipe concrete short column is a single cavity, or a multi-cavity body formed by a plurality of steel pipe concrete, and the multi-cavity body comprises a cavity body of a steel pipe and a cavity body formed by the outer side wall of the steel pipe.
Furthermore, when the upper connecting plate or the lower connecting plate is connected with the longitudinal ribs through nuts, the sectional areas of the end parts of the longitudinal ribs are expanded through cold heading, threading is processed into threads, and the diameter of the bottom of the threads is not smaller than that of the original longitudinal ribs, so that the tensile strength is fully exerted.
Further, the upper connecting plate or the lower connecting plate is matched with the assembled shear wall units through the mortar layers or the gaskets, and the areas between the edge members of the assembled shear wall units are connected through the mortar layers or the gaskets.
Furthermore, the nut adopts 8.8-grade and above nuts with adaptive threads.
Further, the strength grade of the seat slurry layer is not lower than the concrete strength grade of the shear wall unit.
Further, the strength grades of the steel tube, the upper connection plate and the lower connection plate of the concrete-filled steel tube stub must not be lower than Q235.
Further, the thickness of the upper connecting plate and the lower connecting plate is not less than 8 mm.
Furthermore, the strength of the welding seams between the upper connecting plate and the steel pipe and between the lower connecting plate and the steel pipe is greater than that of the base metal.
Further, the steel tube of the steel tube concrete stub has a tensile load capacity at least equivalent to that of the longitudinal bar to which the connecting device is connected.
Further, the thickness of the steel pipe is not less than 5 mm.
Furthermore, a stiffening rib is arranged between the steel pipe of the steel pipe concrete short column and the upper connecting plate or the lower connecting plate.
Further, the diameter of the longitudinal ribs of the edge member should not be less than 14 mm.
Description of the drawings: the edge member is a restraining edge member or a construction edge member. The constraint edge component comprises a constraint edge hidden column, a constraint edge corner wall, a constraint edge flange wall or a constraint edge cross wall; the construction edge member includes a construction edge hidden column, a construction edge corner wall, a construction edge flange wall or a construction edge cross wall. The utility model discloses an edge member does not include restraint edge end post and structure edge end post. The transverse distribution reinforcing steel bars and the vertical distribution reinforcing steel bars among all the shear wall units are not connected. The longitudinal ribs are provided only in the region of the edge members. The stirrups are arranged around the longitudinal bars, and the tie bars are connected with the transversely distributed reinforcing steel bars and the vertically distributed reinforcing steel bars in a rectangular or quincunx shape.
The utility model discloses still include the construction method of above-mentioned assembled shear wall structure, the flow is as follows:
(1) installing a lower-layer assembled shear wall unit and a floor slab, pouring laminated concrete and reserving overhanging longitudinal ribs of edge members of the lower-layer assembled shear wall unit; floors may not be arranged between the fabricated shear wall units.
(2) Roughening the base slurry area at the bottom of the upper-layer assembled shear wall unit, arranging a cushion block capable of adjusting the thickness of a joint and the elevation of the bottom, and paving a base slurry layer at the same time;
(3) hoisting a connecting device, namely passing the upper ends of the overhanging longitudinal ribs of the edge component of the lower-layer assembled shear wall unit through a lower connecting plate mounting hole of the connecting device, and performing nut or welding connection;
(4) paving a base slurry layer or an elastic material on the surface of the upper connecting plate, or arranging a gasket;
(5) and hoisting the upper-layer assembled shear wall unit, wherein the lower end of the outward extending longitudinal rib of the edge member of the upper-layer assembled shear wall unit passes through the upper connecting plate mounting hole of the connecting device and is connected by nuts or welding.
Compared with the prior shear wall assembly technology, the utility model discloses a beneficial effect that technical scheme brought is:
1. the utility model discloses be used for the connection of assembled shear force wall with steel pipe concrete short column, for providing reliable vertical connection between the assembled shear force wall unit, avoided using grout muffjoint technique, preformed hole thick liquid anchor overlap joint technique and cast-in-place defect that the mode of taking to connect brought. Meanwhile, the good tensile and compressive properties of the steel pipe concrete short column can be fully exerted, and the structural bearing capacity of the fabricated shear wall is improved. When the connecting device connects the assembled shear wall units into a whole in the transverse direction and the vertical direction, the connecting device can bear vertical shear force at the transverse splicing position of the assembled shear wall units.
2. The utility model provides a quality that current sleeve grout connected mode exists detect the difficult problem, the utility model discloses a vertical muscle and the upper junction plate of edge component or lower connecting plate welding or nut are connected, ensure that reinforced bar connection is reliable and improve detection efficiency, reduce the detection degree of difficulty.
3. The utility model discloses make the structure atress route simple clear and definite, the shear force of shear force wall structure is undertaken by indulging muscle and seat thick liquid layer completely.
4. The utility model provides a vertical connection technology of shear force wall need not on-the-spot grout owing to adopt bolted connection, need not to consider ambient temperature when the structural construction, can realize the winter construction, compares the grout muffjoint who relies on ambient temperature, the utility model discloses the construction cycle of whole shear force wall structure will be reduced by a wide margin.
Drawings
The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings:
fig. 1 is an isometric view of a rectangular longitudinal connecting device in an embodiment of the invention;
fig. 2 is a cross-sectional view of a rectangular longitudinal connecting means in an embodiment of the invention;
fig. 3 is an isometric view of rectangular transverse and longitudinal attachment means in an embodiment of the invention;
fig. 4 is a cross-sectional view of a rectangular transverse and longitudinal connecting means in an embodiment of the invention;
fig. 5 is an isometric view of an L-shaped longitudinal attachment in an embodiment of the present invention;
fig. 6 is a cross-sectional view of an L-shaped longitudinal attachment in an embodiment of the invention;
fig. 7 is an isometric view of a T-shaped longitudinal attachment in an embodiment of the present invention;
fig. 8 is a cross-sectional view of a T-shaped longitudinal attachment in an embodiment of the invention;
fig. 9 is an isometric view of a cruciform longitudinal attachment in an embodiment of the present invention;
fig. 10 is a cross-sectional view of a cruciform longitudinal attachment in an embodiment of the invention;
fig. 11 is an isometric view of a multi-chambered rectangular transverse and longitudinal connecting means in an embodiment of the invention;
fig. 12 is a cross-sectional view of a multi-lumen rectangular transverse and longitudinal attachment arrangement in an embodiment of the present invention;
fig. 13 is an isometric view of a multi-lumen L-shaped longitudinal attachment means in an embodiment of the present invention;
fig. 14 is a cross-sectional view of a multi-lumen L-shaped longitudinal attachment device in an embodiment of the present invention;
fig. 15 is an isometric view of a rectangular fabricated shear wall unit in an embodiment of the invention;
fig. 16 is an isometric view of an L-shaped fabricated shear wall unit in an embodiment of the invention;
fig. 17 is an isometric view of a T-shaped fabricated shear wall unit in an embodiment of the present invention;
fig. 18 is an isometric view of a cross-shaped fabricated shear wall unit in an embodiment of the present invention;
fig. 19 is an isometric view of a rectangular fabricated shear wall structure with only vertical connections in an embodiment of the invention;
fig. 20 is an isometric view of a rectangular fabricated shear wall structure in an embodiment of the invention;
fig. 21 is an isometric view of an L-shaped fabricated shear wall structure in an embodiment of the present invention;
fig. 22 is an isometric view of a T-shaped fabricated shear wall structure in an embodiment of the invention;
fig. 23 is an isometric view of a cross-shaped fabricated shear wall structure in an embodiment of the present invention;
fig. 24 is an installation schematic view of a fabricated shear wall structure in an embodiment of the present invention;
fig. 25 is a reinforced cross-sectional view of a rectangular fabricated shear wall unit in an embodiment of the present invention;
fig. 26 is a side view of reinforcement for a rectangular fabricated shear wall unit in an embodiment of the present invention.
In the figure:
1-a connecting device; 2-an upper connecting plate; 3-a lower connecting plate; 4-a steel pipe concrete short column; 5-mounting holes; 6-welding seams; 7-fabricated shear wall units; 8-longitudinal ribs; 9-a nut; 10-a mortar layer; 11-an edge member; 12-a floor slab; 13-vertically distributing reinforcing steel bars; 14-a stirrup; 15-horizontally distributing reinforcing steel bars; 16-tie bars.
Detailed Description
In order to make the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below with reference to the accompanying drawings and the detailed description.
Embodiment mode 1:
the utility model provides a connecting device 1 between assembled shear force wall unit, includes upper junction plate 2, lower connecting plate 3 and steel pipe concrete short column 4, its characterized in that: the upper connecting plate 2 is provided with mounting holes 5 through which the lower ends of longitudinal ribs 8 of edge members 11 of the assembled shear wall units 7 can pass and be connected with the upper connecting plate, the lower connecting plate 3 is provided with mounting holes 5 through which the upper ends of the longitudinal ribs 8 of the edge members 11 of the assembled shear wall units 7 can pass and be connected with the lower connecting plate, and the concrete filled steel tube short columns 4 fixedly connect the upper connecting plate 2 and the lower connecting plate 3, so that the assembled shear wall units 7 are vertically connected into a whole (such as figures 1, 2, 5-10 and 19) or transversely and vertically connected into a whole (such as figures 3, 4 and 20-23).
Further, the longitudinal ribs 8 of the fabricated shear wall unit 7 are fixedly connected with the upper connecting plate 2 or the lower connecting plate 3 through welding or nuts 9 (as shown in fig. 24).
Furthermore, the steel pipe concrete short column 4 is geometrically centered with the lower connecting plate 3 by one end of the hollow steel pipe and is connected by the welding line 6, then concrete is poured, a port is ground flat or high-strength cement mortar is filled after the concrete is cured, and the upper connecting plate 2 is geometrically centered with the steel pipe and is connected by the welding line 6.
Further, when the connecting device 1 is installed, the ends of the longitudinal bars 8 of the fabricated shear wall unit 7 extend at least 100mm outwards, and the horizontal distribution bars 15 and the vertical distribution bars 13 do not extend outwards (see fig. 15-18).
Embodiment mode 2:
the utility model provides a connecting device 1 between assembled shear force wall unit, includes upper junction plate 2, lower connecting plate 3 and steel pipe concrete short column 4, its characterized in that: the upper connecting plate 2 is provided with mounting holes 5 through which the lower ends of longitudinal ribs 8 of edge members 11 of the assembled shear wall units 7 can pass and be connected with the upper connecting plate, the lower connecting plate 3 is provided with mounting holes 5 through which the upper ends of the longitudinal ribs 8 of the edge members 11 of the assembled shear wall units 7 can pass and be connected with the lower connecting plate, and the concrete filled steel tube short columns 4 fixedly connect the upper connecting plate 2 and the lower connecting plate 3, so that the assembled shear wall units 7 are vertically connected into a whole (such as figures 1, 2, 5-10 and 19) or transversely and vertically connected into a whole (such as figures 3, 4 and 20-23).
Further, the edge members 11 of the fabricated shear wall unit 7 are notched to provide space for mounting the connector device 1 (see fig. 15-18).
Further, the lower end of the edge member 11 of the fabricated shear wall unit 7 is notched to provide space for mounting the connector 1 (see fig. 15-18).
Further, the upper connecting plate 2 and the lower connecting plate 3 are rectangular, L-shaped, T-shaped or cross-shaped (see FIGS. 1-14).
Further, the concrete filled steel tube stub 4 has a rectangular, L-shaped, T-shaped, or cross-shaped cross-section to accommodate the planar arrangement of fabricated shear walls (see fig. 1-10).
Further, the concrete filled steel tube stub 4 is a single cavity, or a multi-cavity composed of a plurality of concrete filled steel tube stubs 4 (see fig. 11 to 14), and the multi-cavity includes a cavity of a steel tube and a cavity composed of outer side walls of the steel tube.
Embodiment mode 3:
the utility model provides a connecting device 1 between assembled shear force wall unit, includes upper junction plate 2, lower connecting plate 3 and steel pipe concrete short column 4, its characterized in that: the upper connecting plate 2 is provided with mounting holes 5 through which the lower ends of longitudinal ribs 8 of edge members 11 of the assembled shear wall units 7 can pass and be connected with the upper connecting plate, the lower connecting plate 3 is provided with mounting holes 5 through which the upper ends of the longitudinal ribs 8 of the edge members 11 of the assembled shear wall units 7 can pass and be connected with the lower connecting plate, and the concrete filled steel tube short columns 4 fixedly connect the upper connecting plate 2 and the lower connecting plate 3, so that the assembled shear wall units 7 are vertically connected into a whole (such as figures 1, 2, 5-10 and 19) or transversely and vertically connected into a whole (such as figures 3, 4 and 20-23).
Furthermore, when the upper connecting plate 2 or the lower connecting plate 3 is connected with the longitudinal ribs 8 through the nuts 9, the sectional areas of the end parts of the longitudinal ribs 8 are enlarged through cold heading, threading is processed into threads, and the diameter of the thread bottom is not smaller than the diameter of the original longitudinal ribs, so that the tensile strength is fully exerted.
Further, the upper connecting plate 2 or the lower connecting plate 3 is matched with the fabricated shear wall unit 7 through a mortar layer 10 or a gasket, the area between the edge members 11 of the fabricated shear wall unit 7 is connected by using the mortar layer 10 or the gasket, the fabricated shear wall unit 7 is connected with the floor 12 by using the mortar layer 10 or the gasket when the floor 12 is provided, and the area between the edge members 11 of the fabricated shear wall unit 7 is directly connected by using the mortar layer 10 or the gasket when the floor 12 is not provided (as shown in fig. 24).
Embodiment mode 3:
the utility model provides a connecting device 1 between assembled shear force wall unit, includes upper junction plate 2, lower connecting plate 3 and steel pipe concrete short column 4, its characterized in that: the upper connecting plate 2 is provided with mounting holes 5 through which the lower ends of longitudinal ribs 8 of edge members 11 of the assembled shear wall units 7 can pass and be connected with the upper connecting plate, the lower connecting plate 3 is provided with mounting holes 5 through which the upper ends of the longitudinal ribs 8 of the edge members 11 of the assembled shear wall units 7 can pass and be connected with the lower connecting plate, and the concrete filled steel tube short columns 4 fixedly connect the upper connecting plate 2 and the lower connecting plate 3, so that the assembled shear wall units 7 are vertically connected into a whole (such as figures 1, 2, 5-10 and 19) or transversely and vertically connected into a whole (such as figures 3, 4 and 20-23).
Further, the nut 9 adopts 8.8-grade and above nuts with adaptive threads.
Further, the strength grade of the setting mortar layer 10 is not lower than that of the concrete of the shear wall unit 7.
Further, the strength grade of the steel pipe of the concrete-filled steel pipe stub 4, the upper connection plate 2 and the lower connection plate 3 is not lower than Q235.
Further, the thickness of the upper connecting plate 2 and the lower connecting plate 3 is not less than 8 mm.
Further, the strength of the welding seam 6 between the upper connecting plate 2 and the lower connecting plate 3 and the steel pipe is larger than that of the base metal.
Further, the steel pipe of the concrete filled steel tubular stub 4 has a tensile load capacity at least equivalent to that of the longitudinal bar 8 to which the connection device 1 is connected.
Further, the thickness of the steel pipe is not less than 5 mm.
Furthermore, a stiffening rib is arranged between the steel pipe of the steel pipe concrete short column 4 and the upper connecting plate 2 or the lower connecting plate 3.
Further, the diameter of the longitudinal ribs 8 of the edge member 11 should not be less than 14 mm.
Embodiment 4:
the concrete filled steel tube stub 4 described above may be replaced by: steel plates, steel pipes, i-beams, steel reinforced concrete or other elements capable of fixedly connecting the upper connecting plate 2 and the lower connecting plate 3, preferably by welding 6, and at least capable of being pulled and pressed.
The longitudinal ribs 8 are provided only in the region of the edge members 11. The stirrups 14 are arranged around the longitudinal bars 8, and the tie bars 16 connect the transverse distribution reinforcing steel bars 15 and the vertical distribution reinforcing steel bars 13 in a rectangular or quincunx shape (as shown in figures 25 and 26).
Embodiment 5:
the construction method of the fabricated shear wall structure (as shown in fig. 19-23) has the following process:
(1) installing a lower-layer assembled shear wall unit 7 and a floor slab 12, pouring laminated concrete and reserving an outward extending longitudinal rib 8 of an edge member 11 of the lower-layer assembled shear wall unit 7; no floor slab may be provided between the fabricated shear wall units 7.
(2) Roughening the base slurry area at the bottom of the upper-layer assembled shear wall unit 7, arranging a cushion block capable of adjusting the thickness of a joint and the elevation of the bottom, and paving a base slurry layer 10;
(3) hoisting the connecting device 1, passing the upper ends of the overhanging longitudinal ribs 8 of the edge members 11 of the lower-layer assembled shear wall unit 7 through the mounting holes 5 of the lower connecting plate 3 of the connecting device 1, and performing nut 9 or welding connection;
(4) paving a seat slurry layer 10 or an elastic material on the surface of the upper connecting plate 2, or arranging a gasket;
(5) the lower ends of the overhanging longitudinal ribs 8 of the edge members 11 of the upper-layer assembled shear wall unit 7 pass through the mounting holes 5 of the upper connecting plate 2 of the connecting device 1 and are connected by nuts 9 or welding (as shown in figure 24).
In addition, technical features related to the shear wall such as the hidden beams and the holes are not shown in the drawings in order to simplify the drawings.
Claims (10)
1. The utility model provides a connecting device between assembled shear force wall unit, includes upper junction plate, lower connecting plate and steel pipe concrete short column, its characterized in that: the upper connecting plate is provided with a mounting hole through which the lower end of a longitudinal rib of the edge member of the assembled shear wall unit can pass and is connected with the edge member of the assembled shear wall unit, the lower connecting plate is provided with a mounting hole through which the upper end of a longitudinal rib of the edge member of the assembled shear wall unit can pass and is connected with the edge member of the assembled shear wall unit, and the concrete filled steel tube short column is used for fixedly connecting the upper connecting plate and the lower connecting plate, so that the assembled shear wall units are vertically connected into a whole or are horizontally and vertically connected into a whole.
2. A connection device between fabricated shear wall units according to claim 1, wherein: the concrete filled steel tube short column is replaced by the following components: steel plate, steel pipe, I-steel or steel reinforced concrete.
3. A connection device between fabricated shear wall units according to claim 1, wherein: the longitudinal ribs of the assembled shear wall units are fixedly connected with the upper connecting plate or the lower connecting plate through welding or nuts.
4. A connection device between fabricated shear wall units according to claim 1 or 3, wherein: when the connecting device is installed, the horizontally distributed reinforcing steel bars and the vertically distributed reinforcing steel bars do not extend outwards.
5. A connection device between fabricated shear wall units according to claim 1, wherein: the upper connecting plate and the lower connecting plate are rectangular, L-shaped, T-shaped or cross-shaped.
6. A connection device between fabricated shear wall units according to claim 1, wherein: the cross section of the concrete filled steel tube short column is rectangular, L-shaped, T-shaped or cross-shaped, and the concrete filled steel tube short column is a single cavity or a multi-cavity formed by a plurality of concrete filled steel tubes.
7. A connection device between fabricated shear wall units according to claim 1, wherein: when the upper connecting plate or the lower connecting plate is connected with the longitudinal ribs through nuts, the sectional areas of the end parts of the longitudinal ribs are enlarged through cold heading, threading is processed into threads, and the diameter of the bottom of the threads is not smaller than the diameter of the original longitudinal ribs.
8. A connection device between fabricated shear wall units according to claim 1, wherein: the upper connecting plate or the lower connecting plate is matched with the assembled shear wall units through seat slurry or gaskets, and the areas between the edge members of the assembled shear wall units are connected through seat slurry layers or gaskets.
9. A connection device between fabricated shear wall units according to claim 1, wherein: the steel pipe concrete short column is connected with the upper connecting plate and the lower connecting plate through welding seams.
10. A connection device between fabricated shear wall units according to claim 1 or 2, wherein: the lower end of the edge member of the assembled shear wall unit is provided with a notch to provide a space for installing the connecting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023184882.1U CN214696218U (en) | 2020-12-25 | 2020-12-25 | Connecting device between assembled shear wall units |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023184882.1U CN214696218U (en) | 2020-12-25 | 2020-12-25 | Connecting device between assembled shear wall units |
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| CN214696218U true CN214696218U (en) | 2021-11-12 |
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| CN202023184882.1U Active CN214696218U (en) | 2020-12-25 | 2020-12-25 | Connecting device between assembled shear wall units |
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| CN (1) | CN214696218U (en) |
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