CN114440040A - Concrete filled steel tube jacking device with leak protection thick liquid structure - Google Patents
Concrete filled steel tube jacking device with leak protection thick liquid structure Download PDFInfo
- Publication number
- CN114440040A CN114440040A CN202210049925.XA CN202210049925A CN114440040A CN 114440040 A CN114440040 A CN 114440040A CN 202210049925 A CN202210049925 A CN 202210049925A CN 114440040 A CN114440040 A CN 114440040A
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- China
- Prior art keywords
- tube
- pipe
- concrete
- jacking device
- steel tube
- 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.)
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Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 45
- 239000010959 steel Substances 0.000 title claims abstract description 45
- 239000007788 liquid Substances 0.000 title description 4
- 238000009434 installation Methods 0.000 claims abstract description 37
- 239000002002 slurry Substances 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims 7
- 238000007569 slipcasting Methods 0.000 description 12
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009955 starching Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
-
- 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
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a concrete filled steel tube jacking device with a slurry leakage preventing structure, which comprises a steel tube column, an installation tube, a connecting tube and a splicing tube, wherein one side of the steel tube column is provided with a grouting opening, the splicing tube is connected with an external pump body, the installation tube is clamped with the grouting opening, the installation tube is internally provided with the concrete leakage preventing sealing structure, the connecting tube comprises an outer tube and an inner tube, the outer tube is detachably connected with the inner tube through a limiting part, the inner tube is detachably connected with the installation tube through a connecting part, the inner tube is internally provided with an elastic component for providing elasticity for the connecting part, when the installation tube is contracted in the outer tube, the elastic component deforms, and one end, far away from the grouting opening, of the inner tube is detachably connected with the splicing tube. The device is matched with the concrete lifting device for use, so that the concrete can be prevented from leaking during lifting, and the mounting pipe, the connecting pipe and the splicing pipe are detachably designed, so that the aim of convenient assembly and disassembly can be fulfilled.
Description
Technical Field
The invention relates to the field of concrete filled steel tubes, in particular to a concrete filled steel tube jacking device with a slurry leakage preventing structure.
Background
The steel pipe concrete is a structural member formed by filling concrete in a steel pipe, and the steel pipe and core concrete thereof can bear the action of external load together, and the compressive strength of the concrete is high. But the bending resistance is very weak, while the steel, especially the section steel, has strong bending resistance and good elastic plasticity, but is easy to be unstable when being pressed and loses the axial compression resistance. The steel pipe concrete can combine the advantages of the two structurally, the concrete can be in a lateral compression state, the compression strength of the concrete can be improved by times, meanwhile, due to the existence of the concrete, the rigidity of the steel pipe is improved, and the two play a role together, so that the bearing capacity is greatly improved.
The jacking of the concrete filled steel tube generally refers to a pouring method in the concrete filled steel tube structure, wherein concrete is conveyed to a grouting opening at the high position of the steel tube, and grouting is performed inside the steel tube through a grouting hole. However, the existing concrete-filled steel tube jacking device and the steel tube are complex to assemble and disassemble, cannot be used repeatedly, and also has the condition that a grouting opening leaks slurry in the concrete pumping jacking pouring process.
Therefore, a concrete filled steel tube jacking device with a slurry leakage prevention structure is needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a concrete filled steel tube jacking device with a slurry leakage preventing structure, and aims to solve the problems that the jacking device and a steel tube are complex to install, and a slurry leakage is easy to occur at a grouting opening.
The invention is realized by the following steps:
the utility model provides a steel core concrete jacking device with prevent leaking thick liquid structure, includes that one side is equipped with the steel-pipe column of slip casting mouth, installation pipe, connecting pipe and the concatenation pipe that is connected with the outside pump body, the installation pipe with slip casting mouth looks joint, just installation intraduct is provided with prevents the concrete and leaks the seal structure that starching, the connecting pipe includes outer tube and inner tube, the outer tube with can dismantle the connection through the locating part between the inner tube, the inner tube with can dismantle the connection through the connecting piece between the installation pipe, the inside of inner tube is provided with right the connecting piece provides the elastic component of elasticity, works as the installation pipe shrink is in during the inside of outer tube, elastic component takes place deformation, the inner tube is kept away from the one end of slip casting mouth with the connection can be dismantled to the concatenation pipe.
The sealing structure comprises a sealing plate and a stop block, the sealing plate is rotatably installed in the installation pipe through a rotating shaft, the stop block is fixedly installed on the inner wall of the installation pipe, the stop block is located on one side of the steel pipe column, far away from the sealing plate, and is used for limiting the sealing plate.
The connecting piece includes threaded rod and sliding block, the one end of threaded rod with the lateral wall threaded connection of installation pipe, the other end with sliding block swing joint, the sliding block slidable mounting be in the inside of inner tube.
The elastic component is attached to the sliding block.
The locating part sets up to the bolt, the one end of locating part run through the outer tube and the sliding block and with inner tube threaded connection, the sliding block inside be equipped with locating part assorted spout.
The inner tube is kept away from the one end outer wall of slip casting mouth is provided with the mounting, set up the recess that is used for installing the mounting on the concatenation pipe, the recess inner wall be provided with right the mounting plays limiting displacement's spacing bullet knot.
The groove is of an L-shaped structure.
And one side of the limiting elastic buckle in contact with the fixing piece is provided with a circular arc-shaped structure.
Compared with the prior art, the invention has the following beneficial effects:
through being provided with seal structure to the condition of leaking thick liquid appears after preventing the concrete jacking, the rethread makes the installation pipe, be detachable design between connecting pipe and the concatenation pipe, reach the purpose of convenient equipment and dismantlement, and because the shrink of installation pipe is when the outer tube is inside, elastic component can take place deformation, and then when needs are installed the installation pipe, can push into the outer tube inside with the installation pipe earlier and align with the slip casting mouth, under elastic component's elastic action, the quick joint of installation pipe is inside the slip casting mouth.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a concrete filled steel tube jacking device with a slurry leakage preventing structure according to the present invention;
FIG. 2 is a sectional view showing the overall structure of a concrete filled steel tube jacking device having a grout leakage preventing structure according to the present invention;
FIG. 3 is an enlarged view taken at A of FIG. 2 in accordance with the present invention;
fig. 4 is a plan view of a splicing pipe in the concrete filled steel tube jacking device with a grout leakage prevention structure according to the present invention.
In the figure, 1, a steel pipe column; 11. a grouting port; 2. installing a pipe; 3. a connecting pipe; 31. an outer tube; 32. an inner tube; 321. a fixing member; 4. splicing the tubes; 41. a groove; 5. a sealing structure; 51. a closing plate; 52. a stopper; 6. a connecting member; 61. a threaded rod; 62. a slider; 621. a chute; 7. an elastic component; 8. a limiting member; 9. and a limiting elastic buckle.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1-2, a concrete filled steel tube jacking device with a slurry leakage prevention structure comprises a steel tube column 1 with a grouting opening 11 at one side, a mounting tube 2, a connecting tube 3 and a splicing tube 4 connected with an external pump body.
The mounting tube 2 is clamped with the grouting opening 11, specifically, please refer to fig. 2, a placing groove is formed in the outer wall of one end, in contact with the grouting opening 11, of the mounting tube 2, a clamping block is connected to the inside of the placing groove through a spring, and after the mounting tube 2 is plugged into the grouting opening 11, the clamping block is reset by the spring force and clamped with the inner wall of the grouting opening 11.
The sealing structure 5 for preventing concrete from leaking is arranged in the installation pipe 2, specifically, referring to fig. 2-3, the sealing structure 5 includes a closing plate 51 and a stopper 52, the closing plate 51 is rotatably installed in the installation pipe 2 through a rotating shaft, the stopper 52 is fixedly installed on the inner wall of the installation pipe 2, and the stopper 52 is located on one side of the closing plate 51 far away from the steel pipe column 1 and used for limiting the closing plate 51. After the concrete is injected into the interior of the steel pipe column 1, the concrete can provide a reverse driving force for the airtight plate 51, so that the residual stop blocks 52 of the airtight plate 51 are tightly attached, and the condition of slurry leakage of the concrete is further ensured.
Furthermore, the inner cavity of the installation pipe 2 is a rectangular cavity, so that the rectangular cavity can be divided into two independent cavities when the airtight plate 51 is turned over by concrete acting force, and slurry leakage is prevented.
The connecting pipe 3 comprises an outer pipe 31 and an inner pipe 32, the outer pipe 31 and the inner pipe 32 are detachably connected through a limiting piece 8, specifically, the limiting piece 8 is a bolt, and the outer pipe 31 and the inner pipe 32 are connected into a whole through the bolt.
The inner tube 32 is detachably connected to the mounting tube 2 through a connecting member 6, specifically, referring to fig. 3, the connecting member 6 includes a threaded rod 61 and a sliding block 62, one end of the threaded rod 61 is in threaded connection with a side wall of the mounting tube 2, the other end of the threaded rod is movably connected to the sliding block 62, and the sliding block 62 is slidably mounted inside the inner tube 32. The inner tube 32 is connected to the mounting tube 2 by the threaded rod 61, and the sliding block 62 can slide inside the inner tube 32 (i.e., the mounting tube 2 can slide relative to the inner tube 32, and the mounting tube 2 can be retracted inside the outer tube 31).
Further, an elastic member 7 for providing an elastic force to the connecting member 6 is provided inside the inner tube 32, and the elastic member 7 is deformed when the mounting tube 2 is contracted inside the outer tube 31. When needs are installed installation pipe 2, can be earlier with installation pipe 2 shrink inside outer tube 31 and align with slip casting mouth 11, loosen installation pipe 2, installation pipe 2 slides to slip casting mouth 11 inside and with slip casting mouth 11 joint under elastic component 7's effect, accomplishes the installation function of installation pipe 2 promptly.
Wherein, elastic component 7 can be set up to compression spring, utilizes compression spring's elasticity to make installation pipe 2 and slip casting mouth 11 quick joint.
Further, one end of the limiting part 8 penetrates through the outer tube 31 and the sliding block 62 and is in threaded connection with the inner tube 32, a sliding groove 621 matched with the limiting part 8 is arranged inside the sliding block 62, and the sliding block 62 is ensured not to cause interference when sliding, so that the installation tube 2 cannot be contracted inside the outer tube 31.
Preferably, the elastic component 7 and the sliding block 62 are attached to each other (i.e. the elastic component 7 is not connected to the sliding block 62, and the elastic component 7 only provides elastic kinetic energy to the sliding block 62), when the connecting pipe 3 needs to be disassembled, the limiting part 8 is firstly rotated out, so that the outer pipe 31 and the inner pipe 32 can slide relatively, namely, the disassembly of the outer pipe 31 and the inner pipe 32 is completed, and the limiting part 8 does not restrict the connecting piece 6, the inner pipe 32 can be directly separated from the mounting pipe 2, and then the connecting piece 6 is taken out from the mounting pipe 2 by rotating the threaded rod 61.
In conclusion, the whole device can be disassembled into a plurality of parts such as the steel pipe column 1, the installation pipe 2 clamped with the grouting opening 11, the outer pipe 31, the inner pipe 32, the connecting piece 6, the limiting piece 8 and the like, so that the purposes of convenient disassembly and installation are achieved.
Further, in order to connect the whole device with an external pump body, one end of the inner tube 32, which is far away from the grouting opening 11, is detachably connected to the splicing tube 4, specifically, referring to fig. 1-2 and fig. 4, a fixing member 321 is disposed on an outer wall of one end of the inner tube 32, which is far away from the grouting opening 11, a groove 41 for mounting the fixing member 321 is formed in the splicing tube 4, specifically, the groove 41 is an L-shaped structure, and a limiting elastic buckle 9 for limiting the fixing member 321 is disposed on an inner wall of the groove 41. The fixing member 321 is limited by the limiting elastic buckle 9, so that the function of connecting the splicing pipe 4 with the inner pipe 32 is realized.
Specifically, when needs are linked together splicing pipe 4 and inner tube 32, only need earlier align back and rotate with mounting 321 on splicing pipe 4 recess 41 and the inner tube 32, under the effect of spacing bullet knot 9, can accomplish the connection, through setting up recess 41 into the L type, reduce splicing pipe 4 and inner tube 32 probability that breaks away from, effectively promote splicing pipe 4 and the stability of being connected of inner tube 32.
Preferably, spacing clip 9 with one side that mounting 321 contacted is provided with convex structure, and when needs were with splicing tube 4 and inner tube 32 separation, reverse rotation splicing tube 4, mounting 321 can push spacing clip 9, makes spacing clip 9 shrink inside recess 41, can make inner tube 32 and splicing tube 4 phase separation, reaches the purpose of conveniently dismantling inner tube 32 and splicing tube 4.
In summary, the specific application method of the present invention is:
when the interior of the steel pipe column 1 needs to be jacked up, the splicing pipe 4 and the inner pipe 32 are sleeved together, and the splicing pipe 4 and the inner pipe 32 are clamped under the matching action of the limiting elastic buckle 9 and the fixing piece 321; connecting the inner tube 32 and the outer tube 31 together through the limiting member 8, (specifically, the limiting member 8 needs to penetrate through the outer tube 31 and the sliding block 62, and the sliding block 62 is attached to the elastic component 7); then, the inner tube 32 is connected with the mounting tube 2 by using the threaded rod 61, and the mounting tube 2 is compressed inside the outer tube 31, at this time, the elastic component 7 provides elastic power for the sliding block 62 (as the threaded rod 61 is connected with the mounting tube 2, namely, the elastic component 7 provides elastic power for the mounting tube 2); and will install pipe 2 and slip casting mouth 11 and align, under the elastic action, install pipe 2 and slip casting mouth 11 joint, can accomplish the installation of whole device, it is comparatively convenient to operate.
When needing to dismantle, only need can accomplish the dismantlement of concatenation pipe 4, outer tube 31 and inner tube 32 according to above-mentioned step reverse operation, conveniently clear up and can reuse spare part.
In addition, after jacking is completed inside the steel pipe column 1, a pushing force for overturning is provided for the airtight plate 51 after concrete is stacked, so that the airtight plate 51 is attached to the stop block 52 (namely, the airtight plate 51 divides the inner cavity of the installation pipe 2 into two airtight cavities), and the condition of slurry leakage of concrete is avoided.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A concrete-filled steel tube jacking device with a slurry leakage prevention structure comprises a steel tube column (1) with a grouting opening (11) formed in one side, a mounting tube (2), a connecting tube (3) and a splicing tube (4) connected with an external pump body;
the method is characterized in that: the mounting pipe (2) is clamped with the grouting opening (11), and a sealing structure (5) for preventing concrete from leaking is arranged in the mounting pipe (2);
the connecting pipe (3) comprises an outer pipe (31) and an inner pipe (32), and the outer pipe (31) and the inner pipe (32) are detachably connected through a limiting piece (8);
the inner pipe (32) is detachably connected with the mounting pipe (2) through a connecting piece (6), and an elastic assembly (7) for providing elastic force for the connecting piece (6) is arranged in the inner pipe (32);
-the elastic assembly (7) is deformed when the mounting tube (2) is contracted inside the outer tube (31);
one end, far away from the grouting opening (11), of the inner pipe (32) is detachably connected with the splicing pipe (4).
2. The concrete filled steel tube jacking device with the mortar leakage preventing structure as claimed in claim 1, wherein: seal structure (5) include closing plate (51) and dog (52), closing plate (51) are installed through the pivot rotation the inside of installation pipe (2), dog (52) fixed mounting be in on the inner wall of installation pipe (2), just dog (52) are located closing plate (51) are kept away from one side of steel-pipe column (1), it is right to be used for closing plate (51) are spacing.
3. The concrete-filled steel tube jacking device with the mortar leakage preventing structure as claimed in claim 1, wherein: connecting piece (6) include threaded rod (61) and sliding block (62), the one end of threaded rod (61) with the lateral wall threaded connection of installation pipe (2), the other end with sliding block (62) swing joint, sliding block (62) slidable mounting be in the inside of inner tube (32).
4. The concrete-filled steel tube jacking device with the mortar leakage preventing structure as claimed in claim 3, wherein: the elastic component (7) is attached to the sliding block (62).
5. The concrete filled steel tube jacking device with the mortar leakage preventing structure as claimed in claim 3, wherein: the locating part (8) sets up to the bolt, the one end of locating part (8) run through outer tube (31) and sliding block (62) and with inner tube (32) threaded connection, sliding block (62) inside be equipped with locating part (8) assorted spout (621).
6. The concrete filled steel tube jacking device with the mortar leakage preventing structure as claimed in claim 1, wherein: the inner tube (32) is kept away from the outer wall of one end of the grouting opening (11) is provided with a fixing piece (321), a groove (41) used for installing the fixing piece (321) is formed in the splicing pipe (4), and the inner wall of the groove (41) is provided with a limiting elastic buckle (9) which plays a limiting role in the fixing piece (321).
7. The concrete filled steel tube jacking device with the mortar leakage preventing structure as claimed in claim 6, wherein: the groove (41) is arranged to be of an L-shaped structure.
8. The concrete filled steel tube jacking device with the mortar leakage preventing structure as claimed in claim 6, wherein: and one side of the limiting elastic buckle (9) contacting with the fixing piece (321) is provided with a circular arc structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210049925.XA CN114440040B (en) | 2022-01-17 | 2022-01-17 | Steel pipe concrete jacking device with slurry leakage preventing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210049925.XA CN114440040B (en) | 2022-01-17 | 2022-01-17 | Steel pipe concrete jacking device with slurry leakage preventing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114440040A true CN114440040A (en) | 2022-05-06 |
| CN114440040B CN114440040B (en) | 2024-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210049925.XA Active CN114440040B (en) | 2022-01-17 | 2022-01-17 | Steel pipe concrete jacking device with slurry leakage preventing structure |
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| Country | Link |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110011850U (en) * | 2010-06-17 | 2011-12-23 | 류지운 | Coupler of main pipe and branch pipe for drain pipe |
| CN202381903U (en) * | 2011-12-23 | 2012-08-15 | 中联重科股份有限公司 | Concrete conveying bent pipe and grouting machine for grouting same |
| CN209145295U (en) * | 2018-09-28 | 2019-07-23 | 李孝贤 | A kind of steel pipe column concrete lifting device |
| CN210687410U (en) * | 2019-09-29 | 2020-06-05 | 广东恒峰蓝环境工程有限公司 | Industrial waste gas treatment device intake pipe convenient to change |
| CN213573053U (en) * | 2020-10-15 | 2021-06-29 | 孙军 | Concrete filled steel tube jacking device with slurry leakage preventing structure |
| CN213979947U (en) * | 2020-11-04 | 2021-08-17 | 中国建筑一局(集团)有限公司 | Civil engineering watering device |
| CN113530241A (en) * | 2021-07-08 | 2021-10-22 | 广州珠江建设发展有限公司 | Pumping jacking interface structure and pumping jacking method for tall steel pipe concrete column |
-
2022
- 2022-01-17 CN CN202210049925.XA patent/CN114440040B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110011850U (en) * | 2010-06-17 | 2011-12-23 | 류지운 | Coupler of main pipe and branch pipe for drain pipe |
| CN202381903U (en) * | 2011-12-23 | 2012-08-15 | 中联重科股份有限公司 | Concrete conveying bent pipe and grouting machine for grouting same |
| CN209145295U (en) * | 2018-09-28 | 2019-07-23 | 李孝贤 | A kind of steel pipe column concrete lifting device |
| CN210687410U (en) * | 2019-09-29 | 2020-06-05 | 广东恒峰蓝环境工程有限公司 | Industrial waste gas treatment device intake pipe convenient to change |
| CN213573053U (en) * | 2020-10-15 | 2021-06-29 | 孙军 | Concrete filled steel tube jacking device with slurry leakage preventing structure |
| CN213979947U (en) * | 2020-11-04 | 2021-08-17 | 中国建筑一局(集团)有限公司 | Civil engineering watering device |
| CN113530241A (en) * | 2021-07-08 | 2021-10-22 | 广州珠江建设发展有限公司 | Pumping jacking interface structure and pumping jacking method for tall steel pipe concrete column |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114440040B (en) | 2024-01-23 |
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