CN108104370A - For the hinged column base of reinforced column and the construction method of reinforced column - Google Patents
For the hinged column base of reinforced column and the construction method of reinforced column Download PDFInfo
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- CN108104370A CN108104370A CN201711396752.4A CN201711396752A CN108104370A CN 108104370 A CN108104370 A CN 108104370A CN 201711396752 A CN201711396752 A CN 201711396752A CN 108104370 A CN108104370 A CN 108104370A
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- 238000010276 construction Methods 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 239000004567 concrete Substances 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 238000009415 formwork Methods 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 5
- 239000000725 suspension Substances 0.000 abstract description 9
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 3
- 238000010008 shearing Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses the construction methods of a kind of hinged column base for reinforced column and reinforced column, include for the hinged column base of reinforced column：Positioning column, positioning column include the first shell of column and the second shell of column that are connected with each other；Support plate, support plate is equipped with the installing port in the perforation of its thickness direction, positioning column fixation is plugged in installing port, and first shell of column be located at the lower section of support plate, second shell of column is located at the top of support plate, first shell of column is fixedly connected with the basis of reinforced column, and support plate is located at the top on basis and is spaced apart with basis, and reinforced column is suitable for being fixedly connected and being supported on the supporting plate with the second shell of column.Hinged column base according to the present invention is only oriented towards basis and transfers vertical force and shearing, do not transfer moment of flexure, can reduce the area of section on basis, save the geosphere girder construction layer that rigid connection suspension column position of fixity need to be set.In addition hinged column base can be as the energy dissipation component of frame structure, and anti-seismic performance is good.
Description
Technical field
The present invention relates to field of civil engineering, more particularly, to a kind of hinged column base and reinforcing bar for reinforced column
The construction method of concrete column.
Background technology
The suspension column for reinforced column in correlation technique is rigid connection suspension column, this kind of rigid connection suspension column can be to base
Plinth transfer moment of flexure, eccentricity of foundation stress, thereby result in basis area of section it is larger, there is provision of geosphere for deeper basis
To form position of fixity, geological process is undertaken beam by entire rigid system.
The content of the invention
It is contemplated that it solves at least some of the technical problems in related technologies.For this purpose, the present invention carries
Go out a kind of hinged column base for reinforced column, the hinged column base for reinforced column is only oriented towards basic transmission
Vertical force and shearing, do not transfer moment of flexure, can reduce the area of section on basis, it is suitable for some cannot specifically bear moment of flexure
Basic condition.In addition hinged column base can be as the energy dissipation component of frame structure, and anti-seismic performance is good.
The present invention also proposes a kind of construction method of reinforced column.
The hinged column base for reinforced column of embodiment according to a first aspect of the present invention, including：It is vertically extending
Positioning column, the positioning column includes the first shell of column and the second shell of column that are connected with each other；The support plate extended in the horizontal plane, institute
It states support plate and is equipped with the installing port penetrated through in its thickness direction, the positioning column fixation is plugged in the installing port, and described
First shell of column is located at the lower section of the support plate, and second shell of column is located at the top of the support plate, first shell of column with
The basis of the reinforced column is fixedly connected, and the support plate is located at the top on the basis and is spaced with the basis
It opens, the reinforced column is suitable for being fixedly connected and being supported in the support plate with second shell of column.
Hinged column base for reinforced column according to embodiments of the present invention is only oriented towards basis and transfers vertical force and cut
Power does not transfer moment of flexure so that compression member centered on basis is designed compared with eccentric foundation, can reduce the section face on basis
Product, saves the geosphere girder construction layer that rigid connection suspension column position of fixity need to be set.In addition hinged column base can be as the energy dissipating of frame structure
Component, anti-seismic performance are good.
In addition, the hinged column base for reinforced column according to embodiments of the present invention can also have additional skill as follows
Art feature：
According to one embodiment of present invention, the positioning column and the support plate are steel part, the positioning column and institute
Support plate is stated to be welded to connect.
According to one embodiment of present invention, the positioning column is square steel column, circular steel column or interpolation steel column.
According to one embodiment of present invention, the support plate is equipped with the cricoid side plate upwardly extended, the side plate
Suitable for being wrapped in the outside of the reinforced column.
According to one embodiment of present invention, the distance between the support plate and the basis D are 20mm.
According to one embodiment of present invention, first shell of column is fixed on the basis by cast.
According to one embodiment of present invention, it is equipped with pouring layer between the support plate and the basis.
According to one embodiment of present invention, the reinforced column is fixedly connected on second column by cast
Section.
The construction method of the reinforced column of embodiment according to a second aspect of the present invention, the construction method use above-mentioned
The hinged column base of first aspect embodiment, the construction method comprise the following steps：
S1：The reserved opening on the basis of described, the depth H at the hole are less than the length L1 of first shell of column；
S2：Positioning column fixation is plugged in the installing port of the support plate；
S3：First shell of column is inserted vertically into the hole, and first shell of column is fixed on the basis；
S4：The formwork for placing and reinforcing bar of the reinforced column are installed in the support plate；
S5：Casting concrete simultaneously conserves.
The construction method of reinforced column according to embodiments of the present invention, work progress is simple, and construction efficiency is high, and steel
The performance of reinforced concrete column is good.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
It obtains substantially or is recognized by the practice of the present invention.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the structure diagram of hinged column base according to embodiments of the present invention；
Fig. 2 is sectional view of the structure shown in Fig. 1 along line A-A；
Fig. 3 is the part-structure schematic diagram of structure shown in Fig. 2；
Fig. 4 is the schematic diagram coordinated between hinged column base according to embodiments of the present invention and basis；
Fig. 5 is sectional view of the structure shown in Fig. 4 along line B-B.
Reference numeral：
Hinged column base 100；
Positioning column 1；First shell of column 11；Second shell of column 12；
Support plate 2；Installing port 21；
Side plate 3；
Pouring layer 101；Pour mass 102；Butt weld 103；
Basis 200；Hole 201；
Reinforced column 300；Reinforcing bar 301.
Specific embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or has the function of same or like element.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that term " " center ", " length ", " width ", " thickness ", " on ",
" under ", " vertical ", " level ", " top ", " bottom " " interior ", the orientation of the instructions such as " outer " or position relationship be based on side shown in the drawings
Position or position relationship are for only for ease of the description present invention and simplify description rather than instruction or imply signified device or member
Part must have specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.At this
In the description of invention, " multiple " are meant that two or more, unless otherwise specifically defined.
In the description of the present invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
The interaction relationship of connection or two elements inside two elements.It for the ordinary skill in the art, can be with
The concrete meaning of above-mentioned term in the present invention is understood as the case may be.
The hinge for reinforced column 300 of embodiment according to a first aspect of the present invention is described below with reference to Fig. 1-Fig. 5
Connect suspension column 100.
As Figure 1-Figure 5, the hinged column base 100 for reinforced column 300 according to embodiments of the present invention includes：
Positioning column 1 and support plate 2.
Positioning column 1 is vertically extending, and positioning column 1 includes the first shell of column 11 and the second shell of column 12 that are connected with each other, support plate 2
Extend in the horizontal plane, support plate 2 is equipped with the installing port 21 in the perforation of its thickness direction, and the fixation of positioning column 1 is plugged in installing port
In 21, i.e., positioning column 1 is plugged in installing port 21, and opposing stationary between positioning column 1 and support plate 2.First shell of column 11 is located at
The lower section of support plate 2, the second shell of column 12 are located at the top of support plate 2, the basis of the first shell of column 11 and reinforced column 300
200 are fixedly connected, and support plate 2 is located at the top on basis 200 and 200 is spaced apart with basis, reinforced column 300 suitable for
Second shell of column 12 is fixedly connected and is supported in support plate 2.
It disconnects, born vertical force by positioning column 1 and is cut in addition to positioning column 1 between reinforced column 300 and basis 200
Power, and by vertical force and Shear transfer to basis 200, the sectional dimension of positioning column 1 can according to reinforced column 300 by
Power size is adjusted.Reinforced column 300 is supported in support plate 2, reinforcing bar 301 and base in reinforced column 300
It is not connected between plinth 200, thus the moment of flexure of reinforced column 300 is not transferred on basis 200.Further, support plate 2
Basis 200 between be spaced apart, with for reinforced column 300 when bearing moment of flexure prearrangement of deformation amount space.
Hinged column base 100 for reinforced column 300 according to embodiments of the present invention is only oriented towards basis 200 and transfers
Vertical force and shearing, do not transfer moment of flexure so that compression member centered on basis 200 is designed compared with eccentric foundation, can reduced
The area of section on basis 200, saves the geosphere girder construction layer that rigid connection suspension column position of fixity need to be set, facilitates construction.In addition hinge column
Foot 100 can be as the energy dissipation component of frame structure, and anti-seismic performance is good.
In one embodiment of the invention, positioning column 1 and support plate 2 are steel part, i.e., positioning column 1 and support plate 2 are equal
It is fabricated by Steel material, so that positioning column 1 and support plate 2 have higher intensity.Certainly, application is not limited to this,
Positioning column 1 and support plate 2 or concrete element etc..
Positioning column 1 and support plate 2 are welded to connect, i.e. positioning column 1 and support plate 2 is fixed together by being welded to connect, and is made
It obtains the fixation of positioning column 1 to be plugged in installing port 21, connective stability is good, and easy to connect.Optionally, as shown in Figure 3, install
Butt weld 103 is formed between mouth 21 and the periphery wall of positioning column 1, is consolidated positioning column 1 and support plate 2 by butt weld 103
It is scheduled on together, connective stability is high.
Further, positioning column 1 is square steel column (as shown in Fig. 1-Fig. 5), circular steel column or interpolation steel column.
In one embodiment of the invention, support plate 2 is equipped with the cricoid side plate 3 upwardly extended, and side plate 3 is suitable for bag
The outside of reinforced column 300 is wrapped in, it is possible thereby to play a protective role to reinforced column 300, it is avoided to occur
Basis 200 is directly impinged during flexural deformation and is damaged.In addition, side plate 3 is also used as pouring for reinforced column 300
At least a portion of side template is built, i.e. side plate 3 can be used as formwork for placing.
Side plate 3 and support plate 2 can be integrally formed part, i.e. side plate 3 and support plate 2 is fabricated by being integrally machined, added
Work is convenient, and the bonding strength between side plate 3 and support plate 2 is high.Certainly, side plate 3 and support plate 2 can also be individually molded
Afterwards, side plate 3 and support plate 2 are linked together, it is more flexibly and diversified manufactures process.
Preferably, the cross sectional shape of the inner ring surface of side plate 3 is engaged with 300 cross sectional shape of reinforced column, side plate 3
The area of section of inner ring surface and the area of section of reinforced column 300 are equal, such as shown in Fig. 5, the inner ring surface of side plate 3
Cross sectional shape is square with 300 cross sectional shape of reinforced column, and area of section is equal, thus side plate 3 and reinforced concrete
Earth pillar 300 fits together, and thus, it is possible to preferably protect reinforced column 300.
In one embodiment of the invention, as shown in Figure 4, support plate 2 and the distance between 200 D of basis are 20mm,
Thus can be not only the prearrangement of deformation amount space when bearing moment of flexure of reinforced column 300, and reinforced column 300 is whole
Stabilized structure.
In one embodiment of the invention, as shown in Figure 4, the first shell of column 11 is fixed on basis 200, tool by cast
Body, reserved opening 201 on basis 200, the depth H at hole 201 are less than the length L1 of first shell of column 11, hole 201 it is transversal
Area is more than the cross-sectional area of the first shell of column 11, and the first shell of column 11 is inserted vertically into hole 201, and makes the first shell of column 11
In the center at hole 201, then towards grouting in hole 201, such as the secondary filling of high grade ungauged regions pea gravel concreten can be used
Slurry, so as to which the first shell of column 11 is fixed on basis 200.First shell of column 11 is fixed on basis 200 by cast, easy to operate and solid
It is fixed secured.
Further, as shown in Figure 4, pouring layer 101 is equipped between support plate 2 and basis 200, so that support plate
The support of 2 pairs of reinforced columns 300 is more reliable and more stable.Optionally, in above-mentioned hole 201 for being fixedly connected with the first column
Pouring layer 101 between the pour mass 102 and support plate 2 on section 11 and basis 200 and basis 200 is integrally poured into a mould, and thus may be used
To simplify work progress.
In one embodiment of the invention, as shown in figs. 1 and 4, reinforced column 300 is by pouring into a mould fixed connect
The second shell of column 12 is connected to, specifically, the formwork for placing of reinforced column 300 and reinforcing bar 301 can be installed in support plate 2,
Then casting concrete and conserve, i.e., cast-in-place note reinforced column 300.
The hinge for reinforced column 300 of a specific embodiment according to the present invention is described referring to Fig. 1-Fig. 5
Connect suspension column 100.Hinged column base 100 includes positioning column 1, support plate 2 and side plate 3.
Positioning column 1 is vertically extending, and positioning column 1 is steel pipe fitting, and the section of positioning column 1 is square and width W1 is
200mm, steel pipe thickness are 14mm, and the total length L of positioning column 1 is 700mm, wherein, the 11 length L1 of the first shell of column of positioning column 1 is
320mm。
The interior extension along the horizontal plane of support plate 2, support plate 2 are steel part, and the thickness of support plate 2 is 14mm, the center of support plate 2
Position is equipped with square installing port 21, and positioning column 1 is plugged in installing port 21, between the lateral wall of positioning column 1 and installing port 21
Gap width W0=3mm, be fixedly connected, that is, positioned by butt weld 103 between the lateral wall of positioning column 1 and installing port 21
The width of the butt weld 103 formed between the lateral wall of column 1 and installing port 21 is also W0=3mm.
Side plate 3 is formed as vertically extending square loop structure, and side plate 3 is also steel part, with reference to shown in Fig. 1, side plate 3
Lower end edge and support plate 2 week be fixedly connected between by butt weld 103, the height h=220mm of side plate 3, thickness is
14mm, the width W=400mm of the inner ring surface of side plate 3.
Basis 200 is equipped with to install the hole 201 of stationary positioned column 1, the depth H=300mm at hole 201, hole
201 cross section is vertically inserted into the center at hole 201 for square and width W2=300mm, the first shell of column 11 of positioning column 1
Position, the distance D=20mm being spaced at this time between support plate 2 and basis 200 towards the interior grouting in hole 201, and overflow slurries
Suspension column, full of the gap between support plate 2 and basis 200, is thus fixed on basis 200 by 201 outside of hole to it.Here fill
Slurry is using C35 ungauged regions fine-stone concrete back-groutings.
Then the formwork for placing of reinforced column 300 and reinforcing bar 301, casting concrete can be installed in support plate 2
And conserve, it is consequently formed reinforced column 300 of the cross section for square, and the inner ring of the width of its cross section and side plate 3
The width W in face is equal.
The construction method of the reinforced column 300 of embodiment according to a second aspect of the present invention, the construction method use
The hinged column base 100 of above-mentioned first aspect embodiment, the construction method comprise the following steps according to the present invention：
S1：The reserved opening 201 on basis 200, the depth H at hole 201 are less than the length L1 of the first shell of column 11；
S2：The fixation of positioning column 1 is plugged in the installing port 21 of support plate 2；
S3：First shell of column 11 is inserted vertically into hole 201, and the first shell of column 11 is fixed on basis 200, such as is passed through
First shell of column 11 is fixed on basis 200 by the mode of cast；
S4：The formwork for placing of reinforced column 300 and reinforcing bar 301 are installed in support plate 2；
S5：Casting concrete simultaneously conserves.
The construction method of reinforced column 300 according to embodiments of the present invention, work progress is simple, and construction efficiency is high,
And the performance of reinforced column 300 is good.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example describe
Structure, material or feature are contained at least one embodiment of the present invention or example.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can in an appropriate manner combine in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (9)
1. a kind of hinged column base for reinforced column, which is characterized in that including：
Vertically extending positioning column, the positioning column include the first shell of column and the second shell of column that are connected with each other；
The support plate extended in the horizontal plane, the support plate are equipped with the installing port in the perforation of its thickness direction, the positioning column
Fixation is plugged in the installing port, and first shell of column is located at the lower section of the support plate, and second shell of column is located at institute
The top of support plate is stated, first shell of column is fixedly connected with the basis of the reinforced column, and the support plate is located at
The top on the basis is simultaneously spaced apart with the basis, and the reinforced column is suitable for being fixedly connected simultaneously with second shell of column
It is supported in the support plate.
2. the hinged column base according to claim 1 for reinforced column, which is characterized in that the positioning column and institute
It is steel part to state support plate, and the positioning column and the support plate are welded to connect.
3. the hinged column base according to claim 2 for reinforced column, which is characterized in that the positioning column is side
Shape steel column, circular steel column or interpolation steel column.
4. the hinged column base according to claim 1 for reinforced column, which is characterized in that set in the support plate
There is the cricoid side plate upwardly extended, the side plate is suitable for the outside for being wrapped in the reinforced column.
5. the hinged column base according to claim 1 for reinforced column, which is characterized in that the support plate and institute
The distance between basis D is stated as 20mm.
6. the hinged column base according to claim 1 for reinforced column, which is characterized in that first shell of column leads to
It crosses cast and is fixed on the basis.
7. the hinged column base for reinforced column according to claim 1 or 6, which is characterized in that the support plate
Pouring layer is equipped between the basis.
8. the hinged column base according to claim 1 for reinforced column, which is characterized in that the armored concrete
Column is fixedly connected on second shell of column by cast.
9. a kind of construction method of reinforced column, which is characterized in that using according to any one of claim 1-8
Hinged column base, the construction method comprise the following steps：
S1：The reserved opening on the basis of described, the depth H at the hole are less than the length L1 of first shell of column；
S2：Positioning column fixation is plugged in the installing port of the support plate；
S3：First shell of column is inserted vertically into the hole, and first shell of column is fixed on the basis；
S4：The formwork for placing and reinforcing bar of the reinforced column are installed in the support plate；
S5：Casting concrete simultaneously conserves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711396752.4A CN108104370B (en) | 2017-12-21 | 2017-12-21 | Hinge column base for reinforced concrete column and construction method of reinforced concrete column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711396752.4A CN108104370B (en) | 2017-12-21 | 2017-12-21 | Hinge column base for reinforced concrete column and construction method of reinforced concrete column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108104370A true CN108104370A (en) | 2018-06-01 |
| CN108104370B CN108104370B (en) | 2024-07-19 |
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ID=62212220
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711396752.4A Active CN108104370B (en) | 2017-12-21 | 2017-12-21 | Hinge column base for reinforced concrete column and construction method of reinforced concrete column |
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| CN (1) | CN108104370B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11172692A (en) * | 1997-12-16 | 1999-06-29 | Sato Benec Co Ltd | Execution of column constitution member |
| JP2000297480A (en) * | 1999-04-13 | 2000-10-24 | Maeda Corp | Reinforcing method for steel-pipe structure column base section |
| CN103924797A (en) * | 2014-05-06 | 2014-07-16 | 北京筑福国际工程技术有限责任公司 | Country prefabricated steel structure residence system and construction method thereof |
| CN205669255U (en) * | 2016-06-13 | 2016-11-02 | 姚攀峰 | A kind of industrialization preprocessing regenerative structural system |
| CN207794436U (en) * | 2017-12-21 | 2018-08-31 | 中国恩菲工程技术有限公司 | Hinged column base for reinforced column |
-
2017
- 2017-12-21 CN CN201711396752.4A patent/CN108104370B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11172692A (en) * | 1997-12-16 | 1999-06-29 | Sato Benec Co Ltd | Execution of column constitution member |
| JP2000297480A (en) * | 1999-04-13 | 2000-10-24 | Maeda Corp | Reinforcing method for steel-pipe structure column base section |
| CN103924797A (en) * | 2014-05-06 | 2014-07-16 | 北京筑福国际工程技术有限责任公司 | Country prefabricated steel structure residence system and construction method thereof |
| CN205669255U (en) * | 2016-06-13 | 2016-11-02 | 姚攀峰 | A kind of industrialization preprocessing regenerative structural system |
| CN207794436U (en) * | 2017-12-21 | 2018-08-31 | 中国恩菲工程技术有限公司 | Hinged column base for reinforced column |
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| Publication number | Publication date |
|---|---|
| CN108104370B (en) | 2024-07-19 |
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