CN220954033U - Shear wall connection structure based on cantilever truss support system - Google Patents
Shear wall connection structure based on cantilever truss support system Download PDFInfo
- Publication number
- CN220954033U CN220954033U CN202322333713.7U CN202322333713U CN220954033U CN 220954033 U CN220954033 U CN 220954033U CN 202322333713 U CN202322333713 U CN 202322333713U CN 220954033 U CN220954033 U CN 220954033U
- Authority
- CN
- China
- Prior art keywords
- vertical plate
- plate
- support system
- riser
- fixedly connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 28
- 239000004576 sand Substances 0.000 claims description 13
- 238000003466 welding Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 2
- 239000011150 reinforced concrete Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005452 bending Methods 0.000 description 14
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Landscapes
- Joining Of Building Structures In Genera (AREA)
Abstract
The application relates to a shear wall connection structure based on an overhanging truss support system, which comprises a wall body, a steel rib hidden post, a reinforcing part and a connecting part for connecting truss chords, wherein the steel rib hidden post and the reinforcing part are both embedded in the wall body, the reinforcing part comprises a first vertical plate and a second vertical plate, the first vertical plate is positioned right above the second vertical plate, one side surface of the first vertical plate is fixedly provided with a plurality of first rib plates which are vertically arranged, the first vertical plate is fixedly connected with the side surface of the steel rib hidden post through the first rib plates, and the other side surface of the first vertical plate is exposed out of the wall body; a plurality of vertically arranged second rib plates are fixed on one side surface of the second vertical plate, the second vertical plate is fixedly connected with the side surface of the steel rib hidden post through the second rib plates, and the side surface of the second vertical plate and the side surface of the steel rib hidden post are fixedly connected with a horizontally arranged supporting plate; the upper part and the lower part of the connecting piece are fixedly connected with the first vertical plate and the second vertical plate through bolts respectively. The application has the effect of improving the stability.
Description
Technical Field
The application relates to the field of shear wall connection structures, in particular to a shear wall connection structure based on a cantilever truss support system.
Background
The large-area roof has larger dead weight and larger span, and is generally supported by adopting a cantilever steel truss support system so as to improve the attractiveness and realize daylighting. But the requirement on the support of the cantilever steel truss is higher, and the requirement on the connection strength between the root of the cantilever steel truss support system and the shear wall is higher.
The existing connection structure of the overhanging steel truss support system and the shear wall is as follows: the embedded plate is welded on the back of the embedded plate, the hooked steel bars are inserted into the steel bars in the shear wall and bound and fixed, and the embedded plate is formed on the side surface of the shear wall when the shear wall is poured; the connecting piece is used for being fixed with the bottom of the truss chord member of the overhanging steel truss support system, and is generally a connecting plate which is connected with the embedded plate through bolts so as to finish the connection between the root of the overhanging steel truss support system and the shear wall.
But the embedded plate is connected with the shear wall only through the steel bars, and when the pressure of the overhanging steel truss support system is too large to cause the overlarge bending moment born by the embedded plate, the connection failure between the embedded plate and the shear wall is easy to cause.
Disclosure of utility model
In order to improve bending moment resistance of the connecting structure, the application provides a shear wall connecting structure based on a cantilever truss support system.
The application provides a shear wall connection structure based on a cantilever truss support system, which adopts the following technical scheme:
The utility model provides a shear force wall connection structure based on truss support system encorbelments, includes wall body, steel rib hidden post, reinforcement and is used for connecting the connecting piece of truss string pole, steel rib hidden post and reinforcement all pre-buried in the wall body, the reinforcement includes first riser and second riser, wherein first riser is located directly over the second riser, and one side of first riser is fixed with a plurality of first floor of vertical setting, first riser pass through first floor with the side fixed connection of steel rib hidden post, the other side of first riser exposes outside the wall body; a plurality of vertically arranged second rib plates are fixed on one side surface of the second vertical plate, the second vertical plate is fixedly connected with the side surface of the steel rib hidden post through the second rib plates, the side surface of the second vertical plate and the side surface of the steel rib hidden post are fixedly connected with a horizontally arranged supporting plate, and the other side surface of the second vertical plate is exposed out of the wall body; the upper part and the lower part of the connecting piece are fixedly connected with the first vertical plate and the second vertical plate through bolts respectively.
Through adopting above-mentioned technical scheme, firstly, through setting up first riser and second riser, it is connected with the steel rib hidden post through first floor and second floor respectively to can improve the joint strength between first riser and second riser respectively and the wall body, thereby effectively resist the moment of flexure stress from the connecting piece.
Secondly, split to the moment of torsion stress of connecting piece, can obtain, the upper portion of connecting piece is exerted tensile stress to first riser, and the lower part of connecting piece is exerted compressive stress to the second riser, and through setting up the backup pad, can improve the ability of the horizontal direction pressure of second riser to effectively resist the compressive stress of connecting piece, thereby effectively resist the moment of torsion stress of connecting piece.
Optionally, the steel rib hidden column is set to be i-steel, and the i-steel is vertically arranged along the wall body.
Through adopting above-mentioned technical scheme, adopt the I-steel as the steel skeleton hidden column, it can be connected with a plurality of first floor and the second floor that vertically arrange to improve connection stability.
Optionally, the backup pad is established to a plurality ofly, and each backup pad is arranged along the direction of height equidistance of second riser.
By adopting the technical scheme, the supporting plates can effectively resist the compressive stress at each height position of the connecting piece.
Optionally, the connecting piece includes connecting plate, connecting pipe, and the connecting plate is vertical to be set up, upper portion and the lower part of connecting plate respectively with first riser with second riser passes through bolt fixed connection, the mouth of pipe of connecting pipe with connecting plate fixed connection, the connecting pipe is used for supplying the tip of truss chord member to insert.
Through adopting above-mentioned technical scheme, through setting up connecting plate and connecting pipe, the connecting plate is more firm with the connection of first riser and second riser respectively, and the connecting pipe then is used for supplying the truss chord to insert for the moment of flexure stress of truss chord can direct transfer to the connecting pipe, thereby transmits first riser and second riser department through the connecting plate, thereby improves the effect of defending of moment of flexure stress.
Optionally, the connecting piece further includes a reinforcing plate, the connecting pipe is provided with a through hole arranged along the radial direction, the reinforcing plate is perpendicular to the surface of the connecting plate, the reinforcing plate simultaneously passes through the through hole and the truss chord, and the reinforcing plate is connected with the connecting plate in a welding way.
Through adopting above-mentioned technical scheme, firstly, through setting up the reinforcing plate, it can restrict the circumference drunkenness of truss chord to the wearing of truss chord to improve the connection steadiness of truss chord and connecting pipe.
Secondly, reinforcing plate and connecting plate fixed connection can improve the joint strength between connecting pipe and the connecting plate.
Optionally, the connecting piece further includes a connecting ring, the connecting ring cover is located the outside of connecting pipe, the connecting ring with the connecting pipe passes through bolt fixed connection, just the connecting ring with the connecting plate passes through bolt fixed connection.
Through adopting above-mentioned technical scheme, through the bolted connection that sets up the go-between, utilize the high shear stress's of bolt characteristic to greatly improve the joint strength between connecting pipe and the connecting plate.
Optionally, the upper portion and the lower part homogeneous body shaping that are close to of the side of wall body of connecting plate have circular arc bulge, first riser with the exposed surface of second riser all is equipped with a plurality of sand grip, and each sand grip level sets up and each sand grip is arranged along vertical interval, in the clearance between two adjacent sand grip is gone into to circular arc bulge card.
Through adopting above-mentioned technical scheme, through setting up the cooperation in the clearance of circular arc bulge and adjacent sand grip, can increase the vertical spacing effect to the connecting plate for the trend of the moment of flexure displacement of upper portion and lower part of connecting plate can in time be stopped by the sand grip, thereby ensures the connecting plate respectively with the connection steadiness of first riser and second riser.
Optionally, the exposed surfaces of the first riser and the second riser are provided with grooves for the convex strips to be clamped in.
Through adopting above-mentioned technical scheme, through setting up the recess for the installation of sand grip is more simple and convenient.
In summary, the present application includes at least one of the following beneficial technical effects:
1. The first vertical plate and the second vertical plate are connected with the steel rib hidden post through the first rib plate and the second rib plate respectively, so that the connection strength between the first vertical plate and the wall body and the connection strength between the second vertical plate and the wall body can be improved, and bending moment stress from the connecting piece can be effectively resisted; moreover, by arranging the supporting plate, the horizontal pressure capacity of the second vertical plate can be improved, so that the compressive stress of the connecting piece is effectively resisted, and the bending moment stress of the connecting piece is effectively resisted;
2. The connecting plates and the connecting pipes are arranged, and the connecting pipes are used for the insertion of the truss chords, so that bending moment stress of the truss chords can be directly transmitted to the connecting pipes, and then transmitted to the first vertical plates and the second vertical plates through the connecting plates, and the resisting effect of the bending moment stress is improved;
3. The connecting rings are connected through the bolts, and the high shearing stress resistance of the bolts is utilized to greatly improve the connection strength between the connecting pipes;
4. Through setting up the cooperation in the clearance of circular arc bulge and adjacent sand grip for the trend of the moment of flexure displacement of upper portion and lower part of connecting plate can be in time prevented by the sand grip, thereby ensures the connecting plate respectively with the connection steadiness of first riser and second riser.
Drawings
Fig. 1 is a schematic overall structure of embodiment 1.
Fig. 2 is an exploded view of the overall structure of example 1.
Fig. 3 is a side view of the overall structure of embodiment 2.
Fig. 4 is a side view of the overall structure of embodiment 3.
Fig. 5 is a partial enlarged view at a in fig. 4.
Reference numerals illustrate: 1. steel rib hidden column; 2. a reinforcing member; 3. a connecting piece; 10. a wall body; 20. a truss chord; 21. a first riser; 22. a first rib; 23. a second riser; 24. a second rib; 25. a support plate; 31. a connecting plate; 311. a circular arc protruding part; 32. a connecting pipe; 321. a through hole; 33. a reinforcing plate; 34. a connecting ring; 341. a collar portion; 342. extending the round edge; 35. a convex strip; 36. a groove.
Detailed Description
The application is described in further detail below with reference to fig. 1-5.
The embodiment 1 of the application discloses a shear wall connection structure based on a cantilever truss support system.
Referring to fig. 1, a shear wall connection structure based on a cantilever truss support system includes a wall body 10, a steel rib hidden column 1, a reinforcing member 2 and a connecting member 3 for connecting truss chords 20, wherein the steel rib hidden column 1 and the reinforcing member 2 are both embedded in the wall body 10, in this embodiment, the steel rib hidden column 1 is set to be i-steel, the i-steel is vertically arranged along the wall body 10, and the width direction of the waist of the i-steel is the thickness direction of the wall body 10.
As shown in fig. 2, the reinforcing member 2 is arranged in one-to-one correspondence with the connecting member 3, the reinforcing member 2 comprises a first riser 21 and a second riser 23, two first rib plates 22 are welded perpendicularly to one vertical side surface of the first riser 21, one side, far away from the first riser 21, of the first rib plates 22 is connected with the surface of the steel rib dark column 1 in a welded mode, and one vertical side surface, far away from the first rib plates 22, of the first riser 21 is flush with the surface of the wall 10.
The second riser 23 is located under the first riser 21, two second rib plates 24 are vertically welded on one vertical side face of the second riser 23, one side, away from the second riser 23, of the second rib plates 24 is connected with the surface of the steel-reinforced hidden post 1 in a welded mode, and one vertical side face, away from the second rib plates 24, of the second riser 23 is flush with the surface of the wall body 10.
In addition, in order to improve the compressive stress capability, a horizontally arranged supporting plate 25 is arranged between the side surface of the second vertical plate 23 and the side surface of the steel rib hidden post 1, specifically, two short side edges of the supporting plate 25 are respectively welded with the side surface of the second vertical plate 23 and the side surface of the steel rib hidden post 1, and one long side edge of the supporting plate 25 is welded with the side surface of the second rib plate 24.
Meanwhile, a plurality of support plates 25 are provided, and each support plate 25 is arranged equidistantly in the height direction of the second riser 23 to resist compressive stress from each height position of the connector 3.
As shown in fig. 2, the connection member 3 includes a connection plate 31 and a connection pipe 32, the connection plate 31 being parallel to the first riser 21, and upper and lower portions of the connection plate 31 being fixedly connected with the first riser 21 and the second riser 23 by bolts, respectively.
The pipe orifice of the connecting pipe 32 is fixedly connected with the connecting plate 31, and a specific fixing mode can be welding, and the connecting pipe 32 is used for inserting the end part of the truss chord 20, so that the fixed connection between the connecting piece 3 and the truss chord 20 is realized.
In this way, the first riser 21 and the second riser 23 are respectively connected with the steel-reinforced hidden post 1 through the first rib plate 22 and the second rib plate 24, so that the connection strength between the first riser 21 and the second riser 23 and the wall 10 can be improved, and the bending moment stress of the truss chord 20 can be directly transmitted to the connecting pipe 32, so that the bending moment stress is transmitted to the first riser 21 and the second riser 23 through the connecting plate 31, and the connection strength between the first riser 21 and the second riser 23 and the wall 10 is utilized to better resist the bending moment stress.
Secondly, the bending moment stress of the connecting piece 3 is specifically split into a tensile stress applied to the first riser 21 by the upper portion of the connecting piece 3, a compressive stress applied to the second riser 23 by the lower portion of the connecting piece 3, the tensile stress can be effectively resisted by welding the first rib plate 22 and the first riser 21, and the supporting plate 25 can improve the horizontal direction pressure capacity of the second riser 23, so that the compressive stress of the connecting piece 3 can be effectively resisted, and the bending moment stress of the connecting piece 3 can be effectively resisted by the reinforcing piece 2.
In order to further improve the connection strength between the chord 20 and the connecting pipe 32, as shown in fig. 2, the connecting piece 3 further includes a reinforcing plate 33, the connecting pipe 32 is provided with a through hole 321 radially arranged along the connecting pipe, and the chord 20 is also provided with a corresponding through hole.
When the chord 20 is inserted into the connection pipe 32, the through-holes 321 of the connection pipe 32 are aligned with the through-holes 321 of the connection pipe 32, and at this time, the reinforcing plate 33 is simultaneously passed through the through-holes 321 and the chord 20 in the radial direction of the connection pipe 32, and the reinforcing plate 33 is welded to the connection pipe 31, and the reinforcing plate 33 is welded to the connection pipe 32.
The penetration of the reinforcing plate 33 to the chord 20 can restrict the circumferential play of the chord 20, thereby improving the connection stability of the chord 20 and the connection pipe 32.
Example 2
Embodiment 2 is different from embodiment 1 in that, as shown in fig. 3, the connecting piece 3 further includes a connecting ring 34, the connecting ring 34 includes a ring sleeve portion 341 and an extending round edge 342 which are integrally connected, the diameter of the extending round edge 342 is larger than that of the ring sleeve portion 341, the ring sleeve portion 341 is sleeved on the outer side of the connecting pipe 32, the extending round edge 342 is attached to the surface of the connecting edge, the ring sleeve portion 341 is fixedly connected with the connecting pipe 32 through a bolt, and the extending round edge 342 is fixedly connected with the connecting plate 31 through a bolt.
Compared to welded connection, the present embodiment uses the high shear stress resistance of the bolts to greatly improve the connection strength between the connection pipe 32 and the connection plate 31.
Example 3
Embodiment 3 is different from embodiment 1 in that, as shown in fig. 4 and 5, the upper and lower parts of the side surface of the connection plate 31 near the wall body 10 are uniformly formed with the arc-shaped protruding part 311, and the arc-shaped protruding part 311 is formed by casting, and at the same time, in order to improve the casting convenience, the arc-shaped protruding part 311 may be formed as an arc-shaped protruding structure of the connection plate 31.
The exposed surfaces of the first riser 21 and the second riser 23 are respectively provided with a plurality of raised strips 35, each raised strip 35 is horizontally arranged, each raised strip 35 is vertically arranged at intervals, the raised strips 35 and the first riser 21 or the second riser 23 can be connected in a welded or integrally cast mode, in this embodiment, the exposed surfaces of the first riser 21 and the second riser 23 are respectively provided with a groove 36, one half of the raised strips 35 are clamped into the grooves 36, the other half of the raised strips 35 are exposed out of the grooves 36, a concave area is arranged between every two adjacent raised strips 35, the arc-shaped convex parts 311 are clamped into the concave area, and the connecting plate 31 is pressed against the raised strips 35 due to the fact that the connecting plate 31 is fixed with the first riser 21 or the second riser 23 through bolts so as to prevent the raised strips 35 from being separated from the grooves 36.
In this way, when the bending moment stress applied to the connecting plate 31 is too large, the upper portion and the lower portion of the connecting plate 31 will generate a larger tendency of bending moment displacement, and the cooperation of the clearance between the arc protruding portion 311 and the adjacent protruding strips 35 can prevent the tendency of bending moment displacement in time, so as to ensure the connection stability of the connecting plate 31 and the first riser 21 and the second riser 23 respectively.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (8)
1. Shear wall connection structure based on truss support system encorbelments, its characterized in that: the novel reinforced concrete wall comprises a wall body (10), a steel rib hidden post (1), a reinforcing piece (2) and a connecting piece (3) for connecting a truss chord member (20), wherein the steel rib hidden post (1) and the reinforcing piece (2) are both embedded in the wall body (10), the reinforcing piece (2) comprises a first vertical plate (21) and a second vertical plate (23), the first vertical plate (21) is positioned right above the second vertical plate (23), one side surface of the first vertical plate (21) is fixedly provided with a plurality of first rib plates (22) which are vertically arranged, the first vertical plate (21) is fixedly connected with the side surface of the steel rib hidden post (1) through the first rib plates (22), and the other side surface of the first vertical plate (21) is exposed out of the wall body (10); a plurality of second rib plates (24) which are vertically arranged are fixed on one side surface of the second vertical plate (23), the second vertical plate (23) is fixedly connected with the side surface of the steel rib hidden post (1) through the second rib plates (24), a supporting plate (25) which is horizontally arranged is fixedly connected with the side surface of the second vertical plate (23) and the side surface of the steel rib hidden post (1) together, and the other side surface of the second vertical plate (23) is exposed out of the wall body (10); the upper part and the lower part of the connecting piece (3) are fixedly connected with the first vertical plate (21) and the second vertical plate (23) through bolts respectively.
2. The shear wall connection structure based on cantilever truss support system according to claim 1, wherein: the steel rib hidden column (1) is arranged as I-steel, and the I-steel is vertically arranged along the wall body (10).
3. The shear wall connection structure based on cantilever truss support system according to claim 1, wherein: the support plates (25) are arranged in a plurality, and the support plates (25) are equidistantly arranged along the height direction of the second vertical plate (23).
4. A shear wall connection structure based on a cantilever truss support system according to any one of claims 1-3, characterized in that: the connecting piece (3) comprises a connecting plate (31) and a connecting pipe (32), wherein the connecting plate (31) is vertically arranged, the upper part and the lower part of the connecting plate (31) are respectively fixedly connected with the first vertical plate (21) and the second vertical plate (23) through bolts, the pipe orifice of the connecting pipe (32) is fixedly connected with the connecting plate (31), and the connecting pipe (32) is used for inserting the end part of the truss chord member (20).
5. The cantilever truss support system-based shear wall connection structure of claim 4, wherein: the connecting piece (3) further comprises a reinforcing plate (33), the connecting pipe (32) is provided with a through hole (321) which is arranged along the radial direction, the reinforcing plate (33) is perpendicular to the surface of the connecting plate (31), the reinforcing plate (33) simultaneously penetrates through the through hole (321) and the truss chord (20), and the reinforcing plate (33) is connected with the connecting plate (31) in a welding mode.
6. The cantilever truss support system-based shear wall connection structure of claim 4, wherein: the connecting piece (3) further comprises a connecting ring (34), the connecting ring (34) is sleeved on the outer side of the connecting pipe (32), the connecting ring (34) is fixedly connected with the connecting pipe (32) through bolts, and the connecting ring (34) is fixedly connected with the connecting plate (31) through bolts.
7. The cantilever truss support system-based shear wall connection structure of claim 4, wherein: the upper portion and the lower part homogeneous body shaping that are close to of the side of wall body (10) of connecting plate (31) have circular arc bulge (311), first riser (21) with the exposed surface of second riser (23) all is equipped with a plurality of sand grip (35), and each sand grip (35) level sets up and each sand grip (35) are arranged along vertical interval, in the clearance between two adjacent sand grip (35) is gone into to circular arc bulge (311) card.
8. The cantilever truss support system-based shear wall connection structure of claim 7, wherein: the exposed surfaces of the first vertical plate (21) and the second vertical plate (23) are respectively provided with a groove (36) for clamping the convex strips (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322333713.7U CN220954033U (en) | 2023-08-29 | 2023-08-29 | Shear wall connection structure based on cantilever truss support system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322333713.7U CN220954033U (en) | 2023-08-29 | 2023-08-29 | Shear wall connection structure based on cantilever truss support system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220954033U true CN220954033U (en) | 2024-05-14 |
Family
ID=90977783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322333713.7U Active CN220954033U (en) | 2023-08-29 | 2023-08-29 | Shear wall connection structure based on cantilever truss support system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220954033U (en) |
-
2023
- 2023-08-29 CN CN202322333713.7U patent/CN220954033U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100727172B1 (en) | Precast Concrete Panel and Nonsupport Construction Method of Bridge's Cantilever Work Utilizing P.C.P | |
| KR100394072B1 (en) | The connectors for steel pile head embedded in concrete footing and thereof structure | |
| CN204475667U (en) | The structure of prefabricated hybrid beam | |
| CN220954033U (en) | Shear wall connection structure based on cantilever truss support system | |
| CN211114759U (en) | Novel overhanging scaffold | |
| CN111794421A (en) | Assembled precast concrete floor | |
| CN216739580U (en) | Precast concrete pile | |
| CN215907027U (en) | Node that concrete structure and shaped steel roof beam are connected | |
| CN213926884U (en) | Buckle formula shear force wall horizontal connection structure | |
| CN215106580U (en) | Steel beam with steel concrete combined structure | |
| CN213898249U (en) | Reinforced structure of newly-added concrete beam | |
| CN211369157U (en) | Assembled slotting energy-consuming shear wall with steel connecting nodes | |
| CN212835355U (en) | Steel structure of concrete pipe pile body | |
| CN207597580U (en) | A kind of Steel corridor | |
| CN212926705U (en) | Light steel structure roof truss bottom chord supporting body | |
| CN219491019U (en) | Base structure of steel diagonal bracing | |
| CN219604925U (en) | Profile steel column cap structure for reinforcing and reforming girderless floor | |
| CN216948802U (en) | Assembly type structure major structure easy to assemble | |
| CN217299289U (en) | Large-span section steel prestressed concrete composite beam | |
| CN221255253U (en) | Combined template for highway arch culvert construction | |
| CN213682093U (en) | Anchor capable of recycling steel strand | |
| CN220377304U (en) | Supporting node for connecting crown beam and upright post | |
| CN213143380U (en) | Wet-type longitudinal column reinforcing bar beam column high strength concrete connection structure | |
| CN214942672U (en) | Safety protection can be had enough to meet need in assembled stair position regularization | |
| CN221373018U (en) | Building supports reinforcing apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |