CN114411798B - Fan foundation structure - Google Patents
Fan foundation structure Download PDFInfo
- Publication number
- CN114411798B CN114411798B CN202111600862.4A CN202111600862A CN114411798B CN 114411798 B CN114411798 B CN 114411798B CN 202111600862 A CN202111600862 A CN 202111600862A CN 114411798 B CN114411798 B CN 114411798B
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- CN
- China
- Prior art keywords
- block
- elastic
- plug
- groove
- precast block
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- 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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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/44—Foundations for machines, engines or ordnance
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/22—Foundations specially adapted for wind motors
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- 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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- 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
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
Abstract
A fan foundation structure is used for solving the technical problem that a cast-in-place mode construction fan foundation restricts fan installation. The device comprises an upper precast block, wherein a plurality of bolts are detachably fixed at the top of the upper precast block, a first inserting groove is formed in the lower part of the upper precast block, four second inserting grooves communicated with the first inserting grooves are formed in the upper precast block, and the four second inserting grooves correspond to the four side faces of the upper precast block respectively; the lower prefabricated block corresponds to the upper prefabricated block up and down, a first plug-in block is fixed on the lower prefabricated block, four elastic plug-in components are arranged on the first plug-in block, and the first plug-in block is plugged into the first plug-in groove; the four elastic sealing strips are respectively and correspondingly abutted with four splicing seams formed by splicing the upper precast block and the lower precast block, each elastic sealing strip is connected with a connecting component, and the four connecting components respectively and correspondingly extend into four second splicing grooves.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to a fan foundation structure.
Background
With the sharp reduction of limited natural resources, particularly power generation, the traditional coal burning mode is adopted for power generation, a great amount of coal is consumed, and the current situation of power shortage in China is solved by hydroelectric power generation in a plurality of large hydropower stations built in China later.
With the continuous development of technology, a large number of wind power generation facilities such as large fans are currently developed in China, the large fans comprise a basic structure, a vertical rod fixed on the basic structure and a plurality of blades arranged on the top of the vertical rod, and three blades are arranged on each large fan at present.
The prior art generally adopts a cast-in-situ mode to construct the foundation of the fan, the mode needs to be subjected to the formwork supporting and pouring processes, the procedure is relatively complicated, the vertical rods can be installed after the concrete is poured and the concrete reaches the corresponding strength, and the waiting time generally needs a plurality of days, so that the fan foundation is constructed in a cast-in-situ mode, the procedure is complicated, and the installation of the fan is restricted to a certain extent.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a fan foundation structure which is used for solving the technical problems that the process is complicated and the fan installation is restricted to a certain extent due to the fact that a cast-in-place mode is adopted to construct a fan foundation in the background art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a blower substructure, comprising:
the upper precast block is of a cube structure, a plurality of vertical bolts are detachably fixed at the top of the upper precast block, a vertical first inserting groove is formed in the lower part of the upper precast block, four second inserting grooves which are communicated with the first inserting grooves and are horizontal are formed in the upper precast block, and the four second inserting grooves correspond to the four side faces of the upper precast block respectively;
the lower prefabricated block corresponds to the upper prefabricated block up and down, a first plug-in block is fixed on the lower prefabricated block, four elastic plug-in components are arranged on the first plug-in block and are plugged into the first plug-in groove, and the four elastic plug-in components are respectively plugged into the four second plug-in grooves in a one-to-one correspondence manner along with the plugging of the first plug-in block into the first plug-in groove;
the four elastic sealing strips are respectively corresponding to four abutted joints formed by splicing the upper precast block and the lower precast block, each elastic sealing strip is connected with a connecting component, the four connecting components respectively correspond to and extend into four second inserting grooves, each connecting component is used for tensioning the elastic sealing strip when the elastic inserting components are inserted into the second inserting grooves, and then the elastic sealing strip is abutted against the abutted joints between the upper precast block and the lower precast block.
Working principle:
the constructor transfers the upper precast block and the lower precast block respectively, thereby transfer the upper precast block and the lower precast block to the construction site, then constructor excavates the foundation trench at the construction site, then constructor lifts the upper precast block to the upper side of the lower precast block by means of a lifting machine, then makes the upper precast block and the lower precast block perform up-down alignment, after the alignment is completed, the upper precast block is put down, the in-process first plug-in block is plugged into the first plug-in trench, and the in-process four elastic plug-in components are correspondingly plugged into the four second plug-in trenches respectively, and the elastic plug-in components stretch the elastic sealing strip through the connecting component in the process of being plugged into the second plug-in trench, so that the elastic sealing strip tightly abuts against the splice joint between the upper precast block and the lower precast block.
The beneficial effects of the invention are as follows:
according to the invention, a constructor lifts the upper precast block above the lower precast block through a lifting machine, then the upper precast block and the lower precast block are aligned vertically, after alignment is completed, the upper precast block is lowered through the lifting machine, so that the upper precast block and the lower precast block are spliced, in the splicing process, the first splicing block is spliced into the first splicing groove, the four elastic splicing components are respectively spliced into the four second splicing grooves correspondingly, and in the splicing process of the elastic splicing components in the second splicing groove, the elastic sealing strip is tensioned through the connecting component, so that the splicing seam between the upper precast block and the lower precast block is abutted tightly by the elastic sealing strip. And then hoisting the spliced upper precast block and lower precast block into the excavated foundation trench as a whole, and finally backfilling the foundation trench.
The design mode of the invention not only facilitates the splicing and installation of the upper precast block and the lower precast block and improves the installation efficiency, but also enables the elastic sealing strip to be tensioned by the aid of the connecting component in the process of being spliced into the second splicing groove, so that the elastic sealing strip continuously abuts against the splicing seam between the upper precast block and the lower precast block. Here elasticity grafting subassembly has not only played the installation connection effect to last prefabricated section and lower prefabricated section to play and to can last the effect that makes the stretch-draw of elastic sealing strip through coupling assembling, thereby prevent groundwater and flow into between two through the piece between last prefabricated section and the lower prefabricated section, and then prevent that groundwater from corroding and destroying the inside of both concatenation.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 taken at section A-A;
fig. 3 is an enlarged schematic view of the structure at B in fig. 1.
Reference numerals illustrate: the upper prefabricated block 1, the bolt 2, the first inserting groove 3, the second inserting groove 4, the lower prefabricated block 5, the first inserting block 6, the elastic sealing strip 7, the mounting hole 8, the elastic piece 9, the wedge-shaped block 10, the mounting groove 11, the communication hole 12, the elastic rope 13, the elastic block 14, the connecting groove 15, the hard plate 16 and the threaded pipe 17.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings and examples.
As shown in fig. 1 and 2, a fan infrastructure comprising:
the upper precast block 1 is of a cube structure, a plurality of vertical bolts 2 are detachably fixed at the top of the upper precast block 1, a vertical first inserting groove 3 is formed in the lower part of the upper precast block 1, four second inserting grooves 4 which are communicated with the first inserting groove 3 and are horizontal are formed in the upper precast block 1, and the four second inserting grooves 4 correspond to the four side faces of the upper precast block 1 respectively;
the lower prefabricated block 5 corresponds to the upper prefabricated block 1 from top to bottom, a first plug-in block 6 is fixed on the lower prefabricated block 5, four elastic plug-in components are arranged on the first plug-in block 6, the first plug-in block 6 is plugged into the first plug-in groove 3, and the four elastic plug-in components are respectively plugged into the four second plug-in grooves 4 in a one-to-one correspondence manner while the first plug-in block 6 is plugged into the first plug-in groove 3;
the elastic sealing strips 7, the elastic sealing strips 7 are four, the four elastic sealing strips 7 respectively correspond to four abutted seams formed by splicing the upper precast block 1 and the lower precast block 5, each elastic sealing strip 7 is connected with a connecting component, the four connecting components respectively correspond to and extend into the four second inserting grooves 4, each connecting component is used for tensioning the elastic sealing strips 7 when the elastic inserting components are inserted into the second inserting grooves 4, and then the elastic sealing strips 7 are abutted against the abutted seams between the upper precast block 1 and the lower precast block 5, and the elastic sealing strips 7 are waterproof structures commonly used in the construction field and are not described in detail here.
As shown in fig. 1, the first plugging block 6 is provided with four horizontal mounting holes 8, four elastic plugging components are respectively and correspondingly arranged in the four mounting holes 8, each elastic plugging component comprises an elastic piece 9 which is arranged in the mounting hole 8 and is horizontal, and a wedge-shaped block 10 which is fixed at the end part of the elastic piece 9, and the elastic piece 9 is used for pushing the wedge-shaped block 10 along with the process that the first plugging block 6 is plugged into the first plugging groove 3, so that the wedge-shaped block 10 is plugged into the second plugging groove 4, and the elastic piece 9 has a spring structure. This kind of setting means makes things convenient for constructor to get into first grafting groove 3 with first grafting piece 6 at first with the elasticity grafting subassembly, and then makes wedge 10 peg graft to in the second grafting groove 4 under the elasticity effect of elastic component 9.
As shown in fig. 1 and 3, four mounting grooves 11 are formed in the upper portion of the lower prefabricated block 5, four edges of the upper portion of the lower prefabricated block 5 are respectively penetrated through in a one-to-one correspondence manner by the four mounting grooves 11, four communication holes 12 which are communicated with the four second inserting grooves 4 in a one-to-one correspondence manner are formed in the lower portion of the upper prefabricated block 1, the four communication holes 12 are respectively communicated with the four mounting grooves 11 in a one-to-one correspondence manner, the connecting assembly comprises an elastic rope 13 and an elastic block 14, the elastic block 14 is arranged in the second inserting grooves 4 and can slide in the second inserting grooves 4, one end of the elastic rope 13 is connected with the elastic sealing strip 7, the other end of the elastic rope 13 penetrates through the connecting hole and is connected with the elastic block 14, the wedge block 10 is inserted into the second inserting grooves 4 and slides the elastic block 14 to be abutted against the inner wall of the second inserting grooves 4, so that the elastic rope 13 is pulled tightly in the sliding process of the elastic block 14, and the elastic block 14 is made of rubber material or other elastic material structures.
In the actual installation process, constructors can compress and deform the elastic block 14, so that the elastic block 14 passes through the connecting hole and is installed in the second inserting groove 4, and the installation mode is simple in structure and convenient for actual installation.
As shown in fig. 1, the parts of the four sides of the upper precast block 1, which lean against the lower part, are all provided with connecting grooves 15, the parts of the four sides of the lower precast block 5, which lean against the upper part, are also all provided with connecting grooves 15, the four connecting grooves 15 of the upper precast block 1 and the four connecting grooves 15 of the lower precast block 5 are in one-to-one correspondence and are communicated, and the elastic sealing strips 7 are positioned in the corresponding two connecting grooves 15.
As shown in fig. 1 and 3, a hard plate 16 adapted to the elastic sealing strip 7 is disposed in each of the corresponding two connecting grooves 15, the hard plate 16 is located at the outer side of the elastic sealing strip 7 and abuts against the elastic sealing strip 7, the end of the elastic rope 13 is connected with the hard plate 16, the elastic rope 13 passes through the elastic sealing strip 7, the hard plate 16 is disposed, after the elastic rope 13 is pulled and tensioned, the hard plate 16 can be pulled by the elastic rope 13, so that the hard plate 16 can uniformly squeeze and transfer force to the elastic sealing strip 7, each part of the elastic sealing strip 7 can abut against the joint part of the upper precast block 1 and the lower precast block 5, the waterproof effect is further improved, the hard plate 16 is a plastic plate, and the plastic plate is stable in performance and can be prevented from being corroded by the underground environment.
As shown in fig. 1, the upper precast block 1 is embedded with a plurality of vertical screwed pipes 17, a plurality of bolts 2 are in one-to-one corresponding screwed connection in the plurality of screwed pipes 17, in this way, constructors are convenient to replace the bolts 2, because in the actual use process, the fan receives wind force for a long time and can generate external force on the bolts 2, so that the bolts 2 are bent, and the bolts 2 are arranged in a detachable replacement mode, thereby being convenient for later maintenance.
Working principle:
the constructor transfers the upper precast block 1 and the lower precast block 5 respectively, thereby transfer the upper precast block 1 and the lower precast block 5 to the construction site, then constructor excavates the foundation trench at the construction site, then constructor lifts the upper precast block 1 to the upper side of the lower precast block 5 by means of the lifting machine, afterwards, make the upper precast block 1 and the lower precast block 5 vertically align, after the alignment is completed, lower the upper precast block 1, the in-process first splicing block 6 is spliced into the first splicing trench 3, and four wedge blocks 10 are correspondingly spliced into four second splicing trenches 4 under the action of four elastic pieces 9 respectively, and the wedge blocks 10 can push the elastic blocks 14 in the process of being spliced into the second splicing trenches 4, thereby the elastic blocks 14 slide in the second splicing trenches 4 and are abutted with the inner walls of the second splicing trenches 4, the elastic ropes 13 and the hard plates 16 are pulled in the sliding process, the elastic ropes 13 are tightly expanded in the process, and the elastic ropes 13 are tightly stretched into the hard plates 16, and the sealing strips 7 are continuously tensioned between the sealing strips 1 and the sealing strips 5 are continuously abutted against each other.
And then the upper precast block 1 and the lower precast block 5 which are installed are taken as a whole to be placed into a base groove, and then the base groove is backfilled.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (7)
1. A fan substructure, comprising:
the upper precast block (1), the upper precast block (1) is of a cube structure, a plurality of vertical bolts (2) are detachably fixed at the top of the upper precast block (1), a vertical first inserting groove (3) is formed in the lower part of the upper precast block (1), four second inserting grooves (4) which are communicated with the first inserting groove (3) and are horizontal are formed in the upper precast block (1), and the four second inserting grooves (4) correspond to the four side faces of the upper precast block (1) respectively;
the lower prefabricated block (5), the lower prefabricated block (5) corresponds to the upper prefabricated block (1) up and down, a first plug-in block (6) is fixed on the lower prefabricated block (5), four elastic plug-in components are arranged on the first plug-in block (6), the first plug-in block (6) is plugged into the first plug-in groove (3), and the four elastic plug-in components are respectively plugged into the four second plug-in grooves (4) in a one-to-one correspondence manner while the first plug-in block (6) is plugged into the first plug-in groove (3);
the elastic sealing strips (7), the elastic sealing strips (7) are four, the four elastic sealing strips (7) respectively correspond to four abutted seams formed by splicing the upper precast block (1) and the lower precast block (5), each elastic sealing strip (7) is connected with a connecting component, the four connecting components respectively correspond to the four connecting components and extend into the four second inserting grooves (4), each connecting component is used for tensioning the elastic sealing strips (7) when the elastic inserting components are inserted into the second inserting grooves (4), and then the elastic sealing strips (7) are abutted against the abutted seams between the upper precast block (1) and the lower precast block (5).
2. A fan infrastructure as claimed in claim 1, wherein: four horizontal mounting holes (8) are formed in the first plug block (6), four elastic plug assemblies are respectively arranged in the four mounting holes (8) in a corresponding mode, each elastic plug assembly comprises an elastic piece (9) arranged in the mounting hole (8) and horizontal and a wedge-shaped block (10) fixed at the end portion of the elastic piece (9), and the elastic piece (9) is used for pushing the wedge-shaped block (10) along with the first plug block (6) in the process of being plugged into the first plug groove (3), and then the wedge-shaped block (10) is plugged into the second plug groove (4).
3. A fan infrastructure as claimed in claim 2, wherein: the utility model discloses a prefabricated section, including lower prefabricated section (5) and elastic block (14), including first spliced groove (4) and elastic block (14), lower prefabricated section (5) upper portion is opened there are four mounting grooves (11), four mounting grooves (11) respectively one-to-one link up four border on lower prefabricated section (5) upper portion, go up prefabricated section (1) lower part and open have four one-to-one and communication hole (12) that four second spliced groove (4) switched on, four communication hole (12) respectively one-to-one with four mounting groove (11) switched on, coupling assembling includes elastic rope (13) and elastic block (14), elastic block (14) are located in second spliced groove (4) and can slide in second spliced groove (4), and one end and elastic sealing strip (7) of elastic rope (13) are connected, and the other end of elastic rope (13) passes communication hole (12) and is connected with elastic block (14), wedge (10) are pegged graft to in second spliced groove (4) and slide elastic block (14) to the inner wall butt with second spliced groove (4), and then make elastic block (14) slide in process and make elastic rope (13) tightly expand in the elastic block (14) slip.
4. A fan infrastructure as claimed in claim 3, wherein: the four sides of going up prefabricated section (1) all open at the position that leans on the lower part has spread groove (15), the four sides of going up prefabricated section (5) all open at the position that leans on upper portion also has spread groove (15), go up four spread grooves (15) of prefabricated section (1) and four spread grooves (15) of prefabricated section (5) one-to-one and switch on down, elastic sealing strip (7) are located two spread grooves (15) that correspond.
5. A fan infrastructure as in claim 4 wherein: a hard plate (16) matched with the elastic sealing strip (7) is arranged in each of the two corresponding connecting grooves (15), the hard plate (16) is located on the outer side of the elastic sealing strip (7) and is abutted to the elastic sealing strip (7), the end portion of the elastic rope (13) is connected with the hard plate (16), and the elastic rope (13) penetrates through the elastic sealing strip (7).
6. A fan infrastructure as claimed in claim 1, wherein: the upper prefabricated block (1) is embedded with a plurality of vertical threaded pipes (17), and a plurality of bolts (2) are in one-to-one corresponding threaded connection in the plurality of threaded pipes (17).
7. A fan infrastructure as claimed in claim 2, wherein: the elastic piece (9) is of a spring structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111600862.4A CN114411798B (en) | 2021-12-24 | 2021-12-24 | Fan foundation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111600862.4A CN114411798B (en) | 2021-12-24 | 2021-12-24 | Fan foundation structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114411798A CN114411798A (en) | 2022-04-29 |
| CN114411798B true CN114411798B (en) | 2023-08-25 |
Family
ID=81268541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111600862.4A Active CN114411798B (en) | 2021-12-24 | 2021-12-24 | Fan foundation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114411798B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202519709U (en) * | 2012-04-19 | 2012-11-07 | 博坤建设集团有限公司 | Precast block post-cast strip structure of foundation slab |
| CN110593295A (en) * | 2019-09-08 | 2019-12-20 | 中国通信建设集团设计院有限公司 | Novel prefabricated assembly basis of communication tower |
| CN110629784A (en) * | 2019-09-25 | 2019-12-31 | 江苏筑岩建设有限公司 | Fan foundation prestressed concrete additional strengthening |
| CN212801623U (en) * | 2020-07-21 | 2021-03-26 | 中国建筑第二工程局有限公司 | Prefabricated concrete can have enough to meet need formula tower crane fixed foundation basis |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110131899A1 (en) * | 2010-04-30 | 2011-06-09 | Stefan Voss | Apparatus and method for producing a concrete foundation |
-
2021
- 2021-12-24 CN CN202111600862.4A patent/CN114411798B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202519709U (en) * | 2012-04-19 | 2012-11-07 | 博坤建设集团有限公司 | Precast block post-cast strip structure of foundation slab |
| CN110593295A (en) * | 2019-09-08 | 2019-12-20 | 中国通信建设集团设计院有限公司 | Novel prefabricated assembly basis of communication tower |
| CN110629784A (en) * | 2019-09-25 | 2019-12-31 | 江苏筑岩建设有限公司 | Fan foundation prestressed concrete additional strengthening |
| CN212801623U (en) * | 2020-07-21 | 2021-03-26 | 中国建筑第二工程局有限公司 | Prefabricated concrete can have enough to meet need formula tower crane fixed foundation basis |
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| Publication number | Publication date |
|---|---|
| CN114411798A (en) | 2022-04-29 |
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