CN215166600U - Special embedded part, steel structure and building structure - Google Patents
Special embedded part, steel structure and building structure Download PDFInfo
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- CN215166600U CN215166600U CN202121131810.2U CN202121131810U CN215166600U CN 215166600 U CN215166600 U CN 215166600U CN 202121131810 U CN202121131810 U CN 202121131810U CN 215166600 U CN215166600 U CN 215166600U
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Abstract
The utility model discloses a piece, steel construction and building structure are buried in special use relates to building structure technical field, and the main objective improves the piece itself that buries shearing, tensile anchoring power. The utility model discloses a main technical scheme does: a dedicated insert, comprising: the anti-shearing pipe comprises an I-shaped body, an anti-shearing pipe body and a connecting part; the I-shaped body comprises a web plate and two wing plates, the two wing plates are respectively and fixedly connected to opposite side edges of the web plate, and a plurality of pre-drilled holes are uniformly distributed in the web plate; the shear-resistant pipe body penetrates through and is fixedly connected with the web plate; connecting portion include at least one coupling mechanism, and each coupling mechanism includes the connecting plate body and two support rod bodies, and the side that the web was kept away from to the pterygoid lamina is first side, and connecting plate body fixed connection is in first side, and connecting plate body and web coplanar, two support rod body mirror image distribute in the relative side of connecting plate body, and each support rod body sets up for first side slope, and the one end fixed connection in the connecting plate body of each support rod body, and the other end is connected in the attenuator.
Description
Technical Field
The utility model relates to a building structure technical field especially relates to a piece, steel construction and building structure are buried in special use.
Background
When the foundation is generally built or used as a foundation, in order to install a structure on the foundation later or facilitate equipment, the base of part of equipment, or foundation bolts or an auxiliary steel plate structure is pre-embedded in advance when the foundation is manufactured, so that subsequent equipment can be easily fixed on an embedded plate or an embedded part after the foundation is constructed.
When the conventional embedded part (anchor plate and anchor bar) is used, the shearing force along the direction of the embedded part and the pulling force vertical to the direction of the embedded part are transmitted to the anchor bar through the anchor plate and then transmitted to the peripheral concrete wrapping the anchor bar by the anchor bar, and finally the shearing-resistant bearing capacity and the tensile bearing capacity of the embedded part are formed. This force-transmitting feature of conventional inserts has two inherent disadvantages of construction:
(1) shear and tensile bearing forces are limited by the number of anchor bars (limited in number of rows and spacing) and often cannot meet the requirements of shear and tensile forces transmitted by the energy dissipater. Although the shear resistance is insufficient, the shear resistance can be improved by arranging the shear key, the conventional shear key is limited by the force transfer capacity of the pressure bearing surface and the welding seam, the improvement of the shear resistance is limited, and the requirement of higher bearing capacity is still difficult to meet;
(2) in order to obtain higher bearing capacity, a conventional embedded part is usually provided with a plurality of dense anchor bars, and the anchor bars are intersected with the encrypted stirrups and a plurality of longitudinal bars in a node area, so that the construction difficulty (the steel bar positioning difficulty and the concrete pouring difficulty) is greatly improved, even the construction cannot be carried out, and finally the design is modified or reworked.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a special piece, steel construction and building structure of burying, the main objective is to improve the shearing, the tensile anchoring power of burying piece itself.
In order to achieve the above object, the utility model mainly provides the following technical scheme:
in one aspect, the utility model provides a special use buries piece, it includes: the anti-shearing pipe comprises an I-shaped body, an anti-shearing pipe body and a connecting part;
the I-shaped body comprises a web plate and two wing plates, the two wing plates are fixedly connected to opposite side edges of the web plate respectively, and a plurality of pre-drilled holes are uniformly distributed in the web plate;
the shear pipe body penetrates through and is fixedly connected to the web;
connecting portion include at least one coupling mechanism, each coupling mechanism includes the connecting plate body and two support rod bodies, the pterygoid lamina is kept away from a side of web is first side, the connecting plate body fixed connection in first side, the connecting plate body with the web coplanar, two support rod body mirror image distribute in the relative side of connecting plate body, each the bracing piece is relative to first side slope sets up, each the one end fixed connection of the support rod body in the connecting plate body, the other end is connected in the attenuator.
The purpose of the utility model and the technical problem thereof can be further realized by adopting the following technical measures.
Optionally, an included angle between the supporting rod body and the first side surface is 45 °.
Optionally, the shear tube body is located centrally of the web.
Optionally, the radial cross section of the shear pipe body is square.
Optionally, a plurality of the pre-drilled holes are arranged in the web in a matrix.
Optionally, the matrix arrangement of the plurality of pre-drilled holes is two rows and four columns.
On the other hand, the utility model also provides a steel construction, it includes: steel reinforcement framework and aforementioned special use are buried the piece, steel reinforcement framework includes stirrup and lacing wire, the web is located the frame shape within range of stirrup, the both ends of lacing wire respectively fixed connection in the relative side of stirrup, the lacing wire runs through the predrilling.
On the other hand, the utility model also provides a building structure, it includes: floor and aforementioned steel construction, the framework of steel reinforcement set up in the lower surface of floor, coupling mechanism's quantity is one, the connecting plate body fixed connection in the web below the pterygoid lamina.
On the other hand, the utility model also provides a building structure, it includes: floor and aforementioned steel construction, the framework of steel reinforcement set up in the lower surface of floor, at least one coupling mechanism includes first coupling mechanism and second coupling mechanism, first coupling mechanism the connecting plate body connect in the web top the pterygoid lamina, second coupling mechanism the connecting plate body connect in the web below the pterygoid lamina.
On the other hand, the utility model also provides a building structure, it includes: floor and aforementioned steel construction, steel reinforcement comprises first steel reinforcement and second steel reinforcement, first steel reinforcement with second steel reinforcement mutually perpendicular is alternately, first steel reinforcement runs through the floor, second steel reinforcement set up in the lower surface of floor, the web set up in first steel reinforcement with the cross position of second steel reinforcement.
Borrow by above-mentioned technical scheme, the utility model discloses at least, have following advantage:
when prefabricated steel construction, with the web whole inlay locate steel skeleton in, the extending direction of web is the same with steel skeleton's extending direction, and a plurality of lacing wires in the steel skeleton pass the predrilled hole in proper order, avoid the web to remove for steel skeleton. And then the steel reinforcement framework is molded into a cross beam or an upright post by casting concrete, so that the web is embedded in the cross beam or the upright post, and in the process of casting the concrete, the concrete is filled in the shear-resistant pipe body, so that the concrete in the shear-resistant pipe body and the concrete around the web are integrally cured and molded, and the position of the web in the cross beam or the upright post is further fixed.
Supposing that the web plate is embedded in the cross beam, after the other end of the supporting rod body is connected with the damper and generates structural load, the pulling force of the supporting rod body to the connecting plate body is transmitted to the wing plate, the pulling force can be decomposed into a first component force (shearing force) parallel to the wing plate and a second component force (pulling force) vertical to the wing plate, the two supporting rod bodies are distributed on the opposite side edges of the connecting plate body in a mirror image mode, and the first component force of one supporting rod body and the first component force of the other supporting rod body are mutually offset; meanwhile, the second partial forces of the two support rod bodies form a resultant force which is pulled outwards from the wing plates to the cross beam, the direction of the resultant force is perpendicular to the wing plates, and the two wing plates are arranged in the I-shaped body, so that the resultant pressure of the wing plates is minimum.
Furthermore, the connecting plate body and the web plate are coplanar, so that during the process of load transmission of the supporting rod body, load tension is transmitted along the plane, and the relative angle of the wing plate and the web plate cannot be changed due to the load tension.
Drawings
Fig. 1 is a perspective view of a dedicated embedded part provided in an embodiment of the present invention;
fig. 2 is a schematic structural view of a steel reinforcement framework provided by an embodiment of the present invention;
fig. 3 is a side view of a first building structure provided by an embodiment of the present invention;
FIG. 4 is a view taken from the direction B-B of FIG. 3;
fig. 5 is a side view of a second building structure provided by an embodiment of the present invention;
FIG. 6 is a view taken from the direction A-A in FIG. 5;
figure 7 is a side view of a third building structure provided by an embodiment of the present invention;
FIG. 8 is a view in elevation at C-C of FIG. 7;
figure 9 is a side view of a fourth building structure provided by an embodiment of the present invention;
fig. 10 is a view from the direction D-D in fig. 9.
Reference numerals in the drawings of the specification include: the shear pipe comprises a web 101, a wing plate 102, a pre-drilled hole 103, a shear pipe body 104, a connecting plate body 105, a supporting rod body 106, a steel reinforcement framework 200, a hoop reinforcement 201, a tie bar 202, a cross beam 203, a longitudinal reinforcement 204, a floor 300, a web 301, a wing plate 302, a pre-drilled hole 303, a shear pipe body 304, a connecting plate body 305, a supporting rod body 306, a floor 400, a web 401, a wing plate 402, a pre-drilled hole 403, a shear pipe body 404, a connecting plate body 405, a supporting rod body 406, a floor 500, a cross-shaped web 501, a wing plate 502, a pre-drilled hole 503, a shear pipe body 504, a connecting plate body 505, a supporting rod body 506, a center column 507, a T-shaped web 511, a wing plate 512, a pre-drilled hole 513, a shear pipe body 514, a connecting plate body 515, a supporting rod body 516 and a side column 517.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description is given with reference to the accompanying drawings and preferred embodiments, in order to explain the detailed embodiments, structures, features and effects of the present invention. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, in one aspect, an embodiment of the present invention provides a dedicated embedded part, which includes: an I-shaped body, a shear tube body 104 and a connecting portion;
the I-shaped body comprises a web plate 101 and two wing plates 102, the two wing plates 102 are respectively and fixedly connected to opposite side edges of the web plate 101, and a plurality of pre-drilled holes 103 are uniformly distributed in the web plate 101;
the shear pipe body 104 penetrates through and is fixedly connected to the web 101;
connecting portion include at least one coupling mechanism, each coupling mechanism includes the connecting plate body 105 and two support the body of rod 106, pterygoid lamina 102 is kept away from a side of web is first side, connecting plate body 105 fixed connection in first side, connecting plate body 105 with web 101 coplanar, two support the body of rod 106 mirror distribution in connecting plate body 105's relative side, each support the body of rod 106 for first side slope sets up, each support the one end fixed connection of the body of rod 106 in connecting plate body 105, the other end is connected in the attenuator.
The working process of the special embedded part is as follows:
as shown in fig. 1 and 2, when the steel structure is prefabricated, the web 101 is integrally embedded in the steel reinforcement cage 200, the extending direction of the web 101 is the same as that of the steel reinforcement cage 200, and the plurality of tie bars 202 in the steel reinforcement cage 200 sequentially pass through the pre-drilled holes 103, so that the web 101 is prevented from moving relative to the steel reinforcement cage 200. Then, the steel reinforcement cage 200 is formed into the cross beam 203 or the vertical column by casting concrete, so that the web 101 is embedded in the cross beam 203 or the vertical column, and in the process of casting the concrete, the concrete is filled in the shear pipe body 104, so that the concrete in the shear pipe body 104 and the concrete around the web 101 are integrally cured and formed, and the position of the web 101 in the cross beam 203 or the vertical column is further fixed.
Assuming that the web 101 is embedded in the cross beam 203, when the other end of the supporting rod 106 is connected to a damper and generates a structural load, the pulling force of the supporting rod 106 on the connecting plate 105 is transmitted to the wing plate 102, and the pulling force can be decomposed into a first component (shearing force) parallel to the wing plate 102 and a second component (pulling force) perpendicular to the wing plate 102, and the two supporting rods 106 are distributed on the opposite sides of the connecting plate 105 in a mirror image manner, wherein the first component of one supporting rod 106 and the first component of the other supporting rod 106 cancel each other; meanwhile, the second partial force of the two support rods 106 forms a resultant force which pulls the wing plates 102 outwards from the cross beam 203, the direction of the resultant force is perpendicular to the wing plates 102, and the two wing plates 102 are arranged in the I-shaped body, so that the resultant force pressure on the wing plates 102 is minimum.
Furthermore, the connecting plate body 105 and the web 101 are coplanar, so that during load transfer by the support bar body 106, load tension is also transferred along the plane, and the relative angles of the wing plate 102 and the web 101 are not changed by the load tension.
The technical scheme of the utility model among, the special anti-shear bearing capacity of burying the piece is by "I-shaped body + shearing body 104" and interact and form with the concrete, because the wholeness of burying the piece is good and obtain showing the increase with the size (body size and cross-sectional dimension) of the area of contact accessible adjustment I-shaped body of concrete and shearing body 104, therefore can be fine satisfy the biography power demand of large-tonnage energy dissipation attenuator, this advantage is that the piece can't be accomplished is buried to the conventionality. Furthermore, the tensile load-bearing capacity of the dedicated embedded part is naturally strong, which is mainly determined by the special shape (i-shaped body + shear pipe body 104), which is not reachable by the conventional embedded part.
The special embedded part is a special combined embedded part technology for building structure energy dissipaters (the special embedded part technology for the energy dissipaters is short), is an innovative technology special for reliably anchoring energy dissipation parts of the building structure in reinforced concrete beams, columns and walls, has a structure and a principle different from a commonly adopted anchor plate and anchor bar method, and has the advantages of greatly improving shearing resistance and tensile anchoring force and effectively reducing construction difficulty caused by the intensive steel bars in an anchoring node area.
Moreover, the anchor plate and the anchor bar are omitted for the special embedded part, the body type is simple, convenient and compact, the influences on the arrangement of the longitudinal bars and the stirrups 201 in the node area and the concrete pouring are small, and the construction difficulty is greatly reduced compared with the conventional embedded part (particularly when a large-tonnage energy dissipater) for the embedded part.
In a specific embodiment, as shown in fig. 1, the angle between the support bar 106 and the first side surface is 45 °.
In this embodiment, in particular, the connecting plate 105 is perpendicular to the wing plate 102, the support rod 106 extends along the plane of the connecting plate 105, and the angle between the support rod 106 and the first side surface is 45 °. After the steel reinforcement framework 200 is formed by pouring concrete, the axial included angle between the support rod body 106 and the steel reinforcement framework 200 is equal to 45 degrees, the shearing force of the support rod body 106 transmitted to the cross beam 203 or the upright column along the embedded part direction is equal to the pulling force perpendicular to the embedded part direction, and therefore the cross beam 203 or the upright column is stressed in two directions in a balanced manner.
In the particular embodiment, the shear tubes 104 are located centrally in the web 101, as shown in figure 1.
In this embodiment, specifically, the shear pipe body 104 is located at the center of the web 101, and the shear pipe body 104 is also located on the mirror symmetry center line of the two support rods 106, so that the tensile forces along the embedded direction borne by the shear pipe body are offset, and the shear pipe body 104 is prevented from moving along the axial direction of the cross beam 203 or the vertical column.
In particular embodiments, the shear pipe body 104 is square in radial cross-section.
In this embodiment, specifically, the radial cross section of the shear pipe body 104 is square, and when the dedicated embedded member is embedded in the cross beam 203 or the vertical column, the shear pipe body is prevented from rotating axially relative to the cured concrete in the cross beam 203 or the vertical column, thereby improving the stability of the shear pipe body 104 and the web 101 in the cross beam 203 or the vertical column.
As shown in fig. 1, in the specific embodiment, a plurality of the pre-drilled holes 103 are arranged in a matrix in the web 101.
In this embodiment, specifically, after the plurality of tie bars 202 in the steel bar framework 200 respectively pass through the plurality of pre-drilled holes 103, the plurality of tie bars 202 are also arranged in a matrix, and the plurality of tie bars 202 arranged in the matrix apply force to the web 101 synchronously, so that the web 101 is prevented from being displaced in the axial direction of the cross beam 203 or the upright post after the concrete is poured and formed, and the stability of the web 101 in the cross beam 203 or the upright post is improved.
In the embodiment shown in fig. 1, the matrix arrangement of the plurality of pre-drilled holes 103 is two rows and four columns.
In this embodiment, specifically, the plurality of pre-drilled holes 103 are arranged in two rows along the axial direction of the web, two rows of pre-drilled holes 103 are symmetrical about the axial center line of the web 101, and four rows of pre-drilled holes 103 are symmetrical about the radial center line of the web 101, so that the plurality of tie bars 202 uniformly apply force to the web, and the stability of the web 101 in the cross beam 203 or the upright is improved.
On the other hand, another embodiment of the utility model provides a steel construction still, it includes: steel reinforcement framework 200 and aforementioned special embedded part, steel reinforcement framework 200 includes stirrup 201 and lacing wire 202, web 101 is located stirrup 201's frame shape within range, the both ends of lacing wire 202 respectively fixed connection in stirrup 201's relative side, lacing wire 202 runs through predrilled hole 103.
In this embodiment, specifically, the web 101 is located within the frame-shaped range of the stirrup 201, and after the reinforcement cage 200 is poured by concrete, the web 101 and the reinforcement cage 200 are embedded by concrete, so as to improve the strength of the special embedded part in the beam 203 or the column.
Specifically, the steel bar framework 200 further comprises a plurality of longitudinal bars 204, the longitudinal bars 204 are distributed up and down correspondingly, and the stirrups 201 are sequentially arranged along the extending direction of the longitudinal bars 204.
As shown in fig. 3 and 4, in another aspect, another embodiment of the present invention further provides a building structure, which includes: floor 300 and aforementioned steel construction, framework of steel reinforcement 200 set up in the lower surface of floor 300, coupling mechanism's quantity is one, the connection plate body 305 fixed connection in the web 301 below pterygoid lamina 302.
In this embodiment, specifically, the steel bar framework 200 is formed by casting concrete into the cross beam 203 and then is disposed on the lower surface of the floor slab 300, and the connecting plate 305 is fixedly connected to the wing plate 302 below the web 301, so that the connecting plate 305 is located below the cross beam 203, and the two supporting rods 306 connected to the connecting plate 305 are respectively connected to the dampers, thereby supporting the dedicated embedded parts in the cross beam 203 from below the cross beam 203.
As shown in fig. 5 and 6, in another aspect, another embodiment of the present invention further provides a building structure, which includes: floor 400 and aforementioned steel construction, framework of steel reinforcement 200 set up in the lower surface of floor, at least one coupling mechanism includes first coupling mechanism and second coupling mechanism, first coupling mechanism the connection plate body 405 connect in the web 401 top pterygoid lamina 402, second coupling mechanism the connection plate body 405 connect in the web 401 below pterygoid lamina 402.
In this embodiment, specifically, the other ends of the two support rods 406 of the first connection mechanism are respectively connected to the damper, and the other ends of the two support rods 406 of the second connection mechanism are respectively connected to the damper, so as to respectively support the dedicated embedded parts in the cross beam 203 from above and below the cross beam 203.
In another aspect, another embodiment of the present invention further provides a building structure, which includes: floor 500 and aforementioned steel construction, steel skeleton 200 includes first steel skeleton 200 and second steel skeleton 200, first steel skeleton 200 with second steel skeleton 200 mutually perpendicular is criss-cross, first steel skeleton 200 runs through floor 500, second steel skeleton 200 set up in floor 500's lower surface, the web set up in first steel skeleton 200 with the cross position of second steel skeleton 200.
In the present embodiment, specifically, as shown in fig. 7 and 8, the first case is as follows:
after the first steel bar framework 200 is formed by concrete pouring and curing, a central column 507 is formed, after the second steel bar framework 200 is formed by concrete pouring and curing, a cross beam 203 below a floor slab 500 is formed, the web is a cross web 501, the cross web 501 is arranged at the cross position of the central column 507 and the cross beam 203, the center of the cross web 501 is superposed at the cross center of the central column 507 and the cross center of the cross beam 203, four right-angle side edges of the cross web 501 are fixedly connected to the wing plates 502 respectively, each wing plate 502 is connected to the connecting plate body 505, each connecting plate body is connected to one end of each supporting rod body 506, each supporting rod body 506 is superposed at one of right-angle bisectors of the cross web 501, the other end of each supporting rod body 506 is connected to the damper, the force application directions of the four supporting rod bodies 506 to the web are crossed at the center of the cross web, and the purpose of stably supporting the cross beam 203 and the central column 507 is achieved.
As shown in fig. 9 and 10, another case is as follows:
the first steel reinforcement framework 200 becomes a side column 517 after concrete pouring, curing and forming, the second steel reinforcement framework 200 becomes a cross beam 203 below a floor slab 500 after concrete pouring, curing and forming, the web is a T-shaped web 511, the T-shaped web 511 is arranged at the T-shaped crossing position of the side column 517 and the cross beam 203, the center of the T-shaped web 511 is superposed on the T-shaped crossing center of the side column 517 and the cross beam 203, two right-angle side edges of the T-shaped web 511 are respectively and fixedly connected to wing plates 512, each wing plate 512 is connected to a connecting plate body 515, each connecting plate body 515 is connected to one end of a supporting rod body 516, each supporting rod body 516 is superposed on one of the right-angle bisectors of the T-shaped web 511, the other end of each supporting rod body 516 is connected to a damper, and the force application directions of the two supporting rod bodies 516 to the web are crossed at the center of the T-shaped web 511, so that the purpose of stably supporting the cross beam 203 and the side column 517 is achieved.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A specialized insert, comprising:
the I-shaped body comprises a web plate and two wing plates, the two wing plates are fixedly connected to opposite side edges of the web plate respectively, and a plurality of pre-drilled holes are uniformly distributed in the web plate;
the shear-resistant pipe body penetrates through and is fixedly connected to the web;
connecting portion, connecting portion include at least one coupling mechanism, each coupling mechanism includes the connecting plate body and two support rod bodies, the pterygoid lamina is kept away from a side of web is first side, connecting plate body fixed connection in first side, the connecting plate body with the web coplanar, two support rod body mirror image distribute in the relative side of connecting plate body, each the bracing piece is for first side slope sets up, each support the one end fixed connection of the rod body in the connecting plate body, the other end is connected in the attenuator.
2. Dedicated insert according to claim 1,
the support body of rod with the contained angle of first side is 45.
3. Dedicated insert according to claim 1,
the shear tube body is located at the center of the web.
4. Dedicated insert according to claim 1,
the radial section of the shear-resistant pipe body is square.
5. Special insert according to any of claims 1 to 4,
a plurality of the pre-drilled holes are arranged in the web in a matrix.
6. Dedicated insert according to claim 4,
the matrix arrangement form of a plurality of the pre-drilled holes is two rows and four columns.
7. A steel structure, comprising:
the steel reinforcement framework and the special embedded part as claimed in claim 1, wherein the steel reinforcement framework comprises a hoop and a tie bar, the web is located in the frame-shaped range of the hoop, two ends of the tie bar are respectively and fixedly connected to opposite side edges of the hoop, and the tie bar penetrates through the pre-drilled hole.
8. A building structure, comprising:
floor and the steel construction of claim 7, the framework of steel reinforcement sets up in the lower surface of floor, the quantity of coupling mechanism is one, the link plate body fixed connection in the pterygoid lamina of web below.
9. A building structure, comprising:
floor and the steel construction of claim 7, the framework of steel reinforcement is disposed on the lower surface of the floor, at least one of the connection mechanisms comprises a first connection mechanism and a second connection mechanism, the connection plate body of the first connection mechanism is connected to the wing plate above the web, and the connection plate body of the second connection mechanism is connected to the wing plate below the web.
10. A building structure, comprising:
floor and steel construction of claim 7, the framework of steel reinforcement includes first framework of steel reinforcement and second framework of steel reinforcement, first framework of steel reinforcement with second framework of steel reinforcement mutually perpendicular intersects, first framework of steel reinforcement runs through the floor, second framework of steel reinforcement set up in the lower surface of floor, the web set up in first framework of steel reinforcement and the intersection position of second framework of steel reinforcement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202121131810.2U CN215166600U (en) | 2021-05-25 | 2021-05-25 | Special embedded part, steel structure and building structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121131810.2U CN215166600U (en) | 2021-05-25 | 2021-05-25 | Special embedded part, steel structure and building structure |
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| Publication Number | Publication Date |
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| CN215166600U true CN215166600U (en) | 2021-12-14 |
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| CN202121131810.2U Active CN215166600U (en) | 2021-05-25 | 2021-05-25 | Special embedded part, steel structure and building structure |
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2021
- 2021-05-25 CN CN202121131810.2U patent/CN215166600U/en active Active
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