CN208578193U - A kind of shear wall combined structure of steel construction - Google Patents
A kind of shear wall combined structure of steel construction Download PDFInfo
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- CN208578193U CN208578193U CN201721035047.7U CN201721035047U CN208578193U CN 208578193 U CN208578193 U CN 208578193U CN 201721035047 U CN201721035047 U CN 201721035047U CN 208578193 U CN208578193 U CN 208578193U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 255
- 239000010959 steel Substances 0.000 title claims abstract description 255
- 238000010276 construction Methods 0.000 title claims abstract description 88
- 239000002131 composite material Substances 0.000 claims abstract description 109
- 238000005452 bending Methods 0.000 claims abstract description 10
- 230000003252 repetitive effect Effects 0.000 claims description 21
- 238000005266 casting Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002146 bilateral effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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Abstract
The utility model relates to a kind of shear wall combined structures of steel construction, belong to assembled architecture field.Steel square tube including being placed in both ends and upper steel plate and lower steel plate between the steel square tube of both ends, the both ends of upper steel plate and the both ends of lower steel plate are respectively equipped with bending part, upper steel plate and lower steel plate pass through bending part and are fixedly welded on the side wall of steel square tube, and the side wall of upper steel plate, lower steel plate and both ends steel square tube encloses cavity structure jointly.Shear wall combined structure provided by the utility model, composite structure of different shapes can be prefabricated into factory in advance according to the design pattern in house, reduce the assembling work of construction site, it can accelerate the progress of construction, and be combined the advantage of steel construction and concrete, a kind of preferred scheme is provided for assembled architecture field.
Description
Technical field
The utility model relates to a kind of shear wall combined structures of steel construction, belong to assembled architecture field.
Background technique
Assembled architecture is to be assembled by various shear wall slabs by different connection types, have short construction period,
Dismounting convenience and reusable feature.The structure of shear wall slab and many kinds of, often according to the characteristics of building structure into
Row design.Especially for high-rise or super high-rise building, since the horizontal loads such as earthquake are obvious, the control of relative storey displacement is
To one of the important indicator of structure safety control and raising residence comfort.Shear wall is to compare high praise in current assembled architecture
A kind of anti-force measuring structure system, especially suitable in the seismic areas building of highlight lines.
The shear wall of steel construction big, superior characteristic of anti-seismic performance with weight bearing power, if by steel construction and concrete
Structure is effectively combined, and is designed a kind of steel structure concrete shear wall, can be given full play to the building of concrete shear force wall
Flexible layout, the advantage that structure steel fabrication industrialization degree is high, speed of application is fast, while playing steel high-strength light, concrete
The big material property advantage of rigidity provides a kind of good selection scheme for assembled architecture field.
Utility model content
The purpose of the utility model is to provide a kind of shear wall combined structures of steel construction, are existed according to the design pattern in house
Prefabrication connection, construction site are mounted directly, and are reduced assembling work, can be accelerated construction period, also improve the load of building
Ability.
To achieve the goals above, the technology employed by the present utility model is
A kind of shear wall combined structure of steel construction, including being placed in the steel square tube at both ends and between the steel square tube of both ends
Upper steel plate and lower steel plate, the both ends of upper steel plate and the both ends of lower steel plate are respectively equipped with bending part, and upper steel plate is equal with lower steel plate
It is fixedly welded on by bending part on the side wall of steel square tube, the side wall of upper steel plate, lower steel plate and both ends steel square tube encloses jointly
At cavity structure.
The inner wall of the upper steel plate and the inner wall of lower steel plate are equipped with several steel ribs, and by upper steel plate, lower steel plate with
And the cavity structure inside casting concrete that the side wall of both ends steel square tube encloses jointly.
The inner wall of the upper steel plate and the inner wall of lower steel plate are equipped with several steel ribs, pass through between upper steel plate and lower steel plate
Supporter is fixedly connected, and protected inside the cavity structure enclosed jointly by the side wall of upper steel plate, lower steel plate and both ends steel square tube
Hold hollow or casting concrete.
The upper and lower steel plate using both ends steel square tube and between the steel square tube of both ends is as steel construction unit, with only
One end connects the upper and lower steel plate of steel square tube as repetitive unit, and one end that repetitive unit is not connected with steel square tube is fixedly welded on
On the steel square tube outer wall of steel construction unit, multiple repetitive units successively join end to end to form "-" type composite structure in the same direction.
It is combined in the steel square tube of the tail end wherein side wall of side perpendicular to "-" type in the "-" type composite structure
Structure is connected with repetitive unit constitutes L-type composite structure；Positioned at the steel square tube wherein one at middle part in the "-" type composite structure
It is connected perpendicular to "-" type composite structure with repetitive unit on the side wall of side and constitutes T-type composite structure；The "-" type combination knot
In structure positioned at middle part steel square tube two sides side wall on be each perpendicular to "-" type composite structure be connected with repetitive unit composition cross
Type composite structure.
In the "-" type composite structure positioned at middle part steel square tube wherein side side wall be equipped with connection otic placode, it is another
Group steel construction unit also wherein is provided with connection otic placode on the steel square tube outer wall of one end, by the steel construction unit of this group of band connection otic placode
Perpendicular to "-" type composite structure, and will be in the connection otic placode and "-" type composite structure on steel construction unit by junction steel plate
Connection otic placode be fixedly connected, formed T-type composite structure；It is located at the steel square tube two sides at middle part in the "-" type composite structure
It is equipped with connection otic placode on side wall, another two groups of steel construction units are wherein also respectively equipped with engaging lug on the steel square tube outer wall of one end
The steel construction unit of two groups of band connection otic placodes is respectively placed in the two sides of "-" type composite structure by plate, and perpendicular to "-" type
Composite structure place, by junction steel plate by steel construction unit connection otic placode and "-" type composite structure on connection otic placode
It is fixedly connected, forms cross composite structure.
Connection otic placode is equipped on the outer wall of the both ends steel square tube.
The upper and lower steel plate using both ends steel square tube and between the steel square tube of both ends is multiple as steel construction unit
Steel construction unit head and the tail are successively arranged, and the connection otic placode in steel square tube interconnected is fixedly connected with shape by junction steel plate
At "-" type composite structure.
Side wall in the "-" type composite structure positioned at the wherein side of the steel square tube at middle part is equipped with connection otic placode, will
Another group of steel construction unit is placed perpendicular to "-" type composite structure, and passes through junction steel plate for the connection of steel construction unit end
Otic placode is fixedly connected with the connection otic placode in the middle part of "-" type composite structure, forms T-type composite structure；The "-" type composite structure
In be located at middle part steel square tube two sides side wall on be equipped with connection otic placode, another two groups of steel construction units are respectively placed in a word
The two sides of type composite structure, and placed perpendicular to "-" type composite structure, by junction steel plate by the company of steel construction unit end
Ear connecting plate is fixedly connected with the connection otic placode in the middle part of "-" type composite structure, forms cross composite structure.
In the "-" type composite structure positioned at tail portion steel square tube wherein side side wall be equipped with connection otic placode, will be another
One group of steel construction unit perpendicular to "-" type structure place, and by junction steel plate by the connection otic placode of steel construction unit end with
Connection otic placode on the side wall of "-" type composite structure tail portion is fixedly connected, and constitutes L-type composite structure.
Shear wall combined structure provided by the utility model can be prefabricated into factory in advance according to the design pattern in house
Composite structure of different shapes reduces the assembling work of construction site, can accelerate the progress of construction, and by steel construction and coagulation
The advantage of soil is combined, and provides a kind of preferred scheme for assembled architecture field.
The utility model is further elaborated below by way of the drawings and specific embodiments.
Detailed description of the invention:
Fig. 1 is the shear wall section structure diagram for not setting steel rib and the connection of upper and lower steel plate supporter；
Fig. 2 is structural schematic diagram when bar shaped steel rib being arranged in Fig. 1；
Fig. 3 is structural schematic diagram when T-steel rib being arranged in Fig. 1；
Fig. 4 is the schematic diagram that "-" type composite structure is combined into the structure in Fig. 3；
Fig. 5 is the schematic diagram that l-shaped composite structure is combined with the structure in Fig. 3；
Fig. 6 is the schematic diagram that T-type composite structure is combined into the structure in Fig. 3；
Fig. 7 is the schematic diagram that cross composite structure is combined into the structure in Fig. 3；
Fig. 8 is that two groups of "-" type composite structures are arranged connection otic placode in joint face and constitute the schematic diagram of T-type composite structure；
Fig. 9 is that three groups of "-" type composite structures are arranged connection otic placode in joint face and constitute the signal of cross composite structure
Figure；
Figure 10 is that connection otic placode is arranged in both ends steel square tube in Fig. 3 and multiple groups connect and compose the signal of "-" type composite structure
Figure；
Figure 11 is that connection otic placode is arranged in both ends steel square tube in Fig. 3 and multiple groups connect and compose the schematic diagram of T-type composite structure；
Figure 12 is that connection otic placode is arranged in both ends steel square tube in Fig. 3 and multiple groups connect and compose the signal of cross composite structure
Figure；
Figure 13 is that connection otic placode is arranged in both ends steel square tube in Fig. 3 and multiple groups connect and compose the schematic diagram of L-type composite structure.
Specific embodiment:
A kind of shear wall combined structure of steel construction provided by the utility model can be used as steel construction list in a variety of forms
Member, but every kind of steel construction unit is mainly by the steel square tube 1 at both ends and the upper steel plate 2 between both ends steel square tube 1 under
Steel plate 3 is constituted.The both ends of upper steel plate 2 and lower steel plate 3 are respectively equipped with bending part 5, and the purpose is to the convenient welding with steel square tube 1
Fixed, bending part 5 can increase steel plate and the contact area of steel square tube 1 enables connection stronger, will not be to using the structure
Shear wall interfere when constituting special-shaped composite structure connection.The both ends bending part 5 of upper and lower steel plate is respectively welded and is fixed on
On 1 side wall of steel square tube at both ends, the side wall of upper steel plate 2, lower steel plate 3 and both ends steel square tube 1 is enabled to enclose cavity structure jointly
(as shown in Figure 1), and in the inside of cavity structure and the inside casting concrete of both ends steel square tube 1.Further setting, to increase
The combination fastness for adding the concrete and upper and lower steel plate that are poured in cavity, can also be in the inner wall of upper steel plate 2 and lower steel plate 3
Above while several steel ribs 6 are set, steel rib 6 symmetrical above and below can be laid, and can also misplace laying up and down, the steel that the present embodiment provides
Rib 6 can use straight strip structure shown in Fig. 2, can also use T-type structure shown in Fig. 3.
The above-mentioned various steel construction units provided, due between upper and lower steel plate and being not connected with, and only by being cast in sky
The concrete in intracavitary portion is supported, therefore the shear wall weight bearing power of the structure is limited, two blocks of steel plates when load intensity is big
Easily internally collapse.It therefore, can also be on the basis of above-mentioned three provided kind structure under the use environment high for load requirement
On optimize, it may be assumed that several supporters 4 are set between upper steel plate 2 and lower steel plate 3, and supporter 4 can use bolt, screw rod
Or the forms such as plug welding fashioned iron.When supporter 4 is arranged between upper and lower steel plate, it can be divided into hollow inside cavity structure and pour
Build two kinds of situations of concrete.It for hollow structure, can be applied in the building construction of low layer, for being still needed in skyscraper
To increase cavity inside casting concrete its load intensity.
Above-mentioned every kind of given structure can be regarded as one such steel construction unit, utilize this steel construction unit
Different polymorphic structures can be combined into meet the needs of house pattern design.To simplify explanation, below only with band shown in Fig. 3
T-steel rib 6 simultaneously describes how to form special-shaped composite structure in case where being equipped with supporter 4.
First using the complete structure provided in Fig. 3 as a steel construction unit, while wherein one end steel will be removed in Fig. 3
The remaining structure of square tube 1 welds one end bending part 5 that a repetitive unit is not connected with steel square tube 1 as a repetitive unit
It is fixed on the outer wall of steel square tube 1 of steel construction unit, then multiple repetitive units is successively arranged in the same direction, each is repeated single
The one end for being not connected with steel square tube 1 in member is fixed with the steel square tubes soldering in previous repetitive unit, and repetitive units multiple in this way are first
Tail, which is connected, can form the "-" type composite structure (as shown in Figure 4) of different length.
On the basis of the above-mentioned "-" type composite structure provided, by another set repetitive unit perpendicular to "-" type structure
Setting, and one end that this group of repetitive unit is not connected with steel square tube 1 is weldingly fixed on the tail end of "-" type composite structure wherein one
On the side wall of a steel square tube 1, L-type composite structure shown in fig. 5 can be formed；If this group of repetitive unit is not connected with steel square tube 1
One end be weldingly fixed on the side wall of the one of steel square tube 1 in middle part of "-" type composite structure, can be formed shown in fig. 6
T-type composite structure.If other two groups of repetitive units to be separately positioned on to the two sides of "-" type composite structure, and by this two groups of repetitions
One end that unit is not connected with steel square tube 1 is weldingly fixed on the two sides side wall of the same steel square tube 1 in middle part of "-" type composite structure
On, cross composite structure shown in Fig. 7 can be formed.
The above-mentioned "-" type composite structure provided, L-type composite structure, T-type composite structure and cross composite structure are equal
It can shift to an earlier date and complete connection in factory, construction site can save the trouble of site operation.It is contemplated that forming polymorphic structure
Bulky afterwards, transport is inconvenient, can also be combined using prefabricated and assembled in situ to form special-shaped composite structure.That is: first
It is first initially formed "-" type composite structure in the way of above-mentioned provide, and in advance "-" type composite structure is located in factory
Connection otic placode 7 is arranged in the unilateral or bilateral of some steel square tube 1 in portion, after several bolts hole can be opened up in connection otic placode 7 conveniently
Continuous assembly, connection otic placode 7 can use single-row setting, can also be arranged using biserial, for recommending in skyscraper using double
Column setting, when using biserial setting when, need at the bolt hole on each column connection otic placode 7 face relative to each other welded nut 8,
Destination party civilian dress timing bolt can be inserted into from the outside of connection otic placode 7, because of the narrow gaps between biserial connection otic placode 7,
It is unfavorable for nutting operation (setting of the connection otic placode 7 appeared below can refer to aforesaid way setting).It needs and this kind one
The another set steel construction unit of font composite structure connection, it is also desirable to be arranged on 1 outer wall of steel square tube of connecting pin connect in advance
Ear connecting plate 7.When the steel construction unit of connection otic placode 7 will be set only in the vertical connection in the unilateral side of "-" type composite structure, only
Junction steel plate 9 need to be passed through at the construction field (site) by the connection of connection otic placode 7 and steel construction unit end in "-" type composite structure
Otic placode 7 is bolted together, and T-type composite structure shown in Fig. 8 is consequently formed.When connection otic placode 7 will be set
Steel construction unit when the two sides of "-" type composite structure vertically connect, also need to only pass through junction steel plate 9 simultaneously at the construction field (site)
The connection otic placode 7 of connection otic placode 7 and steel construction unit end in "-" type composite structure is bolted together,
Cross composite structure shown in Fig. 9 is consequently formed.
Independent steel construction unit be can be used as there are also a kind of form, it may be assumed that above-mentioned in the present embodiment in advance to have been given
Connection otic placode 7 is respectively provided on the outer wall of the both ends steel square tube 1 of each steel construction unit.To be arranged on the outer wall of steel square tube 1
The structure of good connection otic placode 7 is formed different special-shaped groups by this steel construction unit as a kind of independent steel construction unit
Close structure.As shown in Figure 10, when forming "-" type composite structure, if multiple groups steel construction unit head and the tail are successively connected, and
The connection otic placode 7 in two steel construction units steel square tube 1 interconnected is fixed together by junction steel plate 9.Such as
Fruit will form T-type composite structure shown in Figure 11, some steel square tube 1 at middle part will be located in above-mentioned "-" type composite structure
Single-sided side walls set connection otic placode 7, then another group of steel construction unit is placed perpendicular to "-" type composite structure, pass through connection
The connection otic placode of steel construction unit end is fixedly connected by steel plate 9 with the connection otic placode in the middle part of "-" type composite structure.If wanted
Cross composite structure shown in Figure 12 is formed, some steel square tube 1 at middle part will be located in above-mentioned "-" type composite structure
Bilateral side wall sets connection otic placode 7, then the two sides that another two groups of steel construction units are respectively perpendicular to "-" type composite structure are put
It sets, is consolidated the connection otic placode 7 of steel construction unit end and the connection otic placode 7 in the middle part of "-" type composite structure by junction steel plate 9
Fixed connection.If forming L-type composite structure shown in Figure 13, tail portion will be located at wherein in above-mentioned "-" type composite structure
The single-sided side walls of one steel square tube 1 set connection otic placode 7, then by another group of steel construction unit perpendicular to "-" type composite structure
It places, by junction steel plate 9 by the connection on the connection otic placode of steel construction unit end and "-" type composite structure tail portion side wall
Otic placode 7 is fixedly connected.The special-shaped composite structure being composed of the steel construction unit of this 1 band connection otic placode 7 of both ends steel square tube,
It can assemble at the construction field (site), not only convenient transportation, assembly method is also simple and convenient.
Above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, those of ordinary skill in the art couple
Other modifications or equivalent replacement that the technical solution of the utility model is made, without departing from technical solutions of the utility model
Spirit and scope should all cover in the scope of the claims of the utility model.
Claims (9)
1. a kind of shear wall combined structure of steel construction, including being placed in the steel square tube at both ends and between the steel square tube of both ends
Upper steel plate and lower steel plate, it is characterised in that: the both ends of the upper steel plate and the both ends of lower steel plate are respectively equipped with bending part, upper steel
Plate and lower steel plate pass through bending part and are fixedly welded on the side wall of steel square tube, upper steel plate, lower steel plate and both ends steel square tube
Side wall encloses cavity structure jointly；It is fixedly connected between upper steel plate and lower steel plate by supporter.
2. a kind of shear wall combined structure of steel construction according to claim 1, it is characterised in that: the upper steel plate it is interior
The inner wall of wall and lower steel plate is equipped with several steel ribs, is enclosed jointly by the side wall of upper steel plate, lower steel plate and both ends steel square tube
At cavity structure inside keep hollow or casting concrete.
3. a kind of shear wall combined structure of steel construction according to claim 2, it is characterised in that: described with both ends steel side
Pipe and the upper and lower steel plate between the steel square tube of both ends are as steel construction unit, with the upper and lower steel of only one end connection steel square tube
One end that repetitive unit is not connected with steel square tube is fixedly welded on the steel square tube outer wall of steel construction unit as repetitive unit by plate
On, multiple repetitive units successively join end to end to form "-" type composite structure in the same direction.
4. a kind of shear wall combined structure of steel construction according to claim 3, it is characterised in that: the "-" type combination
It is connected perpendicular to "-" type composite structure with repetitive unit in the steel square tube of the tail end wherein side wall of side in structure and constitutes L
Type composite structure；Steel square tube in the "-" type composite structure positioned at middle part is wherein on the side wall of side perpendicular to "-" type group
Conjunction structure is connected with repetitive unit constitutes T-type composite structure；It is located at the steel square tube two sides at middle part in the "-" type composite structure
Side wall on be each perpendicular to "-" type composite structure and be connected with repetitive unit constitute cross composite structure.
5. a kind of shear wall combined structure of steel construction according to claim 3, it is characterised in that: the "-" type combination
Side wall in structure positioned at the steel square tube wherein side at middle part is equipped with connection otic placode, another group of steel construction unit wherein one end
It also is provided with connection otic placode on steel square tube outer wall, by the steel construction unit of this group of band connection otic placode perpendicular to "-" type composite structure,
And the connection otic placode on steel construction unit is fixedly connected with the connection otic placode in "-" type composite structure by junction steel plate, shape
At T-type composite structure；It is equipped with connection otic placode on the side wall of the steel square tube two sides at middle part in the "-" type composite structure,
Another two groups of steel construction units are wherein also respectively equipped with connection otic placode on the steel square tube outer wall of one end, by two groups of band connection otic placodes
Steel construction unit is respectively placed in the two sides of "-" type composite structure, and places perpendicular to "-" type composite structure, by connecting steel
Connection otic placode on steel construction unit is fixedly connected by plate with the connection otic placode in "-" type composite structure, forms cross combination
Structure.
6. a kind of shear wall combined structure of steel construction according to claim 2, it is characterised in that: the both ends steel square tube
Outer wall on be equipped with connection otic placode.
7. a kind of shear wall combined structure of steel construction according to claim 6, it is characterised in that: described with both ends steel side
As steel construction unit, multiple steel construction unit head and the tail are successively arranged for pipe and the upper and lower steel plate between the steel square tube of both ends,
And the connection otic placode in steel square tube interconnected is fixedly connected to form by "-" type composite structure by junction steel plate.
8. a kind of shear wall combined structure of steel construction according to claim 7, it is characterised in that: the "-" type combination
In structure positioned at middle part steel square tube wherein side side wall be equipped with connection otic placode, by another group of steel construction unit perpendicular to
"-" type composite structure is placed, and will be in the connection otic placode of steel construction unit end and "-" type composite structure by junction steel plate
The connection otic placode in portion is fixedly connected, and forms T-type composite structure；It is located at the two of the steel square tube at middle part in the "-" type composite structure
It is equipped with connection otic placode on the side wall of side, another two groups of steel construction units are respectively placed in the two sides of "-" type composite structure, and hang down
It is directly placed in "-" type composite structure, by junction steel plate by the connection otic placode of steel construction unit end and "-" type composite structure
The connection otic placode at middle part is fixedly connected, and forms cross composite structure.
9. a kind of shear wall combined structure of steel construction according to claim 7, it is characterised in that: the "-" type combination
In structure positioned at tail portion steel square tube wherein side side wall be equipped with connection otic placode, by another group of steel construction unit perpendicular to one
Font structure is placed, and passes through junction steel plate for the connection otic placode of steel construction unit end and "-" type composite structure tail portion side wall
On connection otic placode be fixedly connected, constitute L-type composite structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721035047.7U CN208578193U (en) | 2017-08-18 | 2017-08-18 | A kind of shear wall combined structure of steel construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721035047.7U CN208578193U (en) | 2017-08-18 | 2017-08-18 | A kind of shear wall combined structure of steel construction |
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| CN208578193U true CN208578193U (en) | 2019-03-05 |
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| CN201721035047.7U Expired - Fee Related CN208578193U (en) | 2017-08-18 | 2017-08-18 | A kind of shear wall combined structure of steel construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944360A (en) * | 2019-04-09 | 2019-06-28 | 河南绿建建筑科技有限公司 | Framework of steel reinforcement, screw rod and C-type steel combined steel concrete compound tube T-type node |
-
2017
- 2017-08-18 CN CN201721035047.7U patent/CN208578193U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944360A (en) * | 2019-04-09 | 2019-06-28 | 河南绿建建筑科技有限公司 | Framework of steel reinforcement, screw rod and C-type steel combined steel concrete compound tube T-type node |
| CN109944360B (en) * | 2019-04-09 | 2024-05-03 | 河南绿建建筑科技有限公司 | Steel reinforcement framework, screw rod and C-shaped steel combined steel concrete combined pipe T-shaped joint |
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Granted publication date: 20190305 |