CN212801655U - Assembled cross cable shaft - Google Patents
Assembled cross cable shaft Download PDFInfo
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- CN212801655U CN212801655U CN202021323124.0U CN202021323124U CN212801655U CN 212801655 U CN212801655 U CN 212801655U CN 202021323124 U CN202021323124 U CN 202021323124U CN 212801655 U CN212801655 U CN 212801655U
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Abstract
The utility model relates to the technical field of electric power construction, the utility model discloses an assembled cross cable shaft; the assembled four-way cable well of the utility model is made of novel light high-strength corrosion-resistant GFRP materials, thereby ensuring the structural performance of the cable well, reducing the weight of the cable well and facilitating transportation and hoisting, ensuring that the mass of each part does not exceed 40kg, avoiding the need of large-scale mechanical hoisting, realizing flexible site selection, improving the working efficiency, and having the characteristics of economy, reasonableness, convenient transportation and convenient construction; all parts of the cable well are anticorrosive, so that the cable well has good weather resistance and durability, does not need later-stage anticorrosive maintenance after one-time construction, reduces later-stage maintenance cost, and is suitable for coastal corrosive environments; the cable shaft adopts the stiffening panel and the fine aggregate concrete to form the combined bottom plate, so that the overall rigidity of the bottom plate is improved, the overall stability of the four-way cable shaft is enhanced, the problem of uneven settlement is avoided, and the construction method is suitable for coastal soft soil foundation construction.
Description
Technical Field
The utility model relates to an electric power construction technical field, especially an assembled cross cable shaft.
Background
In order to facilitate the pulling of the cable on the straight line section at the corner and the branch of the power transmission line, a cable well needs to be arranged. In the cast-in-place reinforced concrete cable well commonly used in the prior art, the cable well is constructed by in-situ formwork erecting, reinforcing steel bar binding and concrete pouring, and the defects of long construction period, obvious weather influence on the construction period, large construction quality fluctuation, high labor intensity of workers, no contribution to environmental protection and the like exist.
The prefabricated assembly type concrete cable well in the prior art has the problems of overlarge integral weight, difficulty in hoisting and transporting and the like. For example, the patent number is 201621226722.X, a prefabricated cable shaft, including prefabricated well body, prefabricated well lid and prefabricated bottom plate, prefabricated well body, prefabricated well lid and prefabricated bottom plate all adopt reinforced concrete to make, and its whole weight is too big, hoist and mount transportation difficulty, be not convenient for the construction.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an assembled cross cable shaft, under the prerequisite that satisfies cable shaft function and bearing capacity, alleviate the weight of cable shaft, improve the efficiency of construction to it is too big to solve traditional concrete cable shaft weight, the low scheduling problem of efficiency of construction.
Realize the utility model discloses the technical solution of purpose does:
an assembled four-way cable shaft is characterized by comprising a bottom plate, a base, corner columns, a baffle plate, a cover plate and a bolt; the corner columns comprise a first corner column, a second corner column, a third corner column, a fourth corner column, a fifth corner column, a sixth corner column, a seventh corner column and an eighth corner column; the baffle plates comprise a first baffle plate, a second baffle plate, a third baffle plate, a fourth baffle plate, a fifth baffle plate, a sixth baffle plate, a seventh baffle plate, an eighth baffle plate, a ninth baffle plate, a tenth baffle plate, an eleventh baffle plate and a twelfth baffle plate; a fine stone concrete layer is arranged on the top surface of the bottom plate, and the bottom plate and the fine stone concrete layer form a combined bottom plate; eight bases are arranged on the bottom plate and arranged according to an octagon; the first corner column, the second corner column, the third corner column, the fourth corner column, the fifth corner column, the sixth corner column, the seventh corner column and the eighth corner column are respectively fixed on the corresponding bases; a first baffle is fixed at one end of the first corner post through a bolt, a second baffle is fixed between the other end of the first corner post and one end of the second corner post through a bolt, and a third baffle is fixed at the other end of the second corner post through a bolt; a fourth baffle is fixed at one end of the third corner column through a bolt, a fifth baffle is fixed between the other end of the third corner column and one end of the fourth corner column through a bolt, and a sixth baffle is fixed at the other end of the fourth corner column through a bolt; a seventh baffle plate is fixed at one end of the fifth corner column through a bolt, an eighth baffle plate is fixed between the other end of the fifth corner column and one end of the sixth corner column through a bolt, and a ninth baffle plate is fixed at the other end of the sixth corner column through a bolt; a tenth baffle is fixed at one end of the seventh corner post through a bolt, an eleventh baffle is fixed between the other end of the seventh corner post and one end of the eighth corner post through a bolt, and a twelfth baffle is fixed at the other end of the eighth corner post through a bolt; the second baffle and the eighth baffle, and the fifth baffle and the eleventh baffle are parallel to each other, and the second baffle, the eighth baffle, the fifth baffle and the eleventh baffle are combined to form a four-way shaft chamber; the first baffle and the twelfth baffle, the third baffle and the fourth baffle, the sixth baffle and the seventh baffle, and the ninth baffle and the tenth baffle are all parallel to each other to form four cable channels; the cover plate is arranged on the tops of the corner posts and the baffle plate; the bottom plate, the base, the corner posts, the baffle plates, the cover plate and the bolts are all made of light GFRP materials.
As a preferred technical scheme of the utility model, the bottom plate is formed by splicing a plurality of stiffening panels, and two adjacent stiffening panels are connected through a tongue-and-groove; every stiffening panel all includes panel and a plurality of stiffening rib, and even on the panel be provided with a plurality of stiffening rib.
As the utility model discloses a preferred technical scheme, the both ends of base are provided with the recess, and the base is pegged graft mutually with the corner post, and base cross sectional dimension slightly is less than corner post cavity cross-section internal dimension.
As an optimal technical scheme of the utility model, first corner post, second corner post, third corner post, fourth corner post, fifth corner post, sixth corner post, seventh corner post and eighth corner post are hollow structure, and its wall thickness is not less than 5 mm.
As an optimal technical scheme of the utility model, the both ends of first corner post, second corner post, third corner post, fourth corner post, fifth corner post, sixth corner post, seventh corner post and eighth corner post all are provided with the slot mouth, and the slot mouth passes through bolt and adjacent baffle looks fixed connection.
As a preferred technical scheme of the utility model, first baffle, second baffle, third baffle, fourth baffle, fifth baffle, sixth baffle, seventh baffle, eighth baffle, ninth baffle, tenth baffle, eleventh baffle and twelfth baffle are boxed structure, and its wall thickness is not less than 4 mm.
As a preferred technical scheme of the utility model, the second baffle, the eighth baffle, the fifth baffle and the eleventh baffle are formed by splicing two or more box-type side plates, and two adjacent box-type side plates are fixedly connected through a latch; the first baffle, the twelfth baffle, the third baffle, the fourth baffle, the sixth baffle, the seventh baffle, the ninth baffle and the tenth baffle are all box-type side plates.
As an optimized technical scheme of the utility model, the apron adopts grid formula apron.
As an optimized technical scheme of the utility model, the transversal H type of personally submitting of bolt.
Compared with the prior art, the utility model, it is showing the advantage:
(1) the utility model discloses each part of assembled cross cable shaft adopts novel light weight, high strength and corrosion resistant GFRP material to make, has guaranteed cable shaft structural performance to the convenient transportation of weight and the hoist and mount that alleviate cable shaft, the quality of every part is no longer than 40kg, need not large-scale machinery hoist and mount, and the place is selected in a flexible way, has improved work efficiency, has economic rationality, transports convenient, the convenient characteristics of construction.
(2) The utility model discloses each part of assembled four-way cable shaft is anticorrosive, has good weatherability and durability, and the completion of once being under construction need not the anticorrosive maintenance in later stage, reduces later stage maintenance cost, adaptable coastal corrosion environment.
(3) The utility model discloses assembled four-way cable shaft adopts stiffening panel and pea gravel concrete to form the composite bottom plate, has improved the bulk rigidity of bottom plate, has strengthened four-way cable shaft's overall stability, has avoided the differential settlement problem, adaptable coastal weak soil foundation construction.
Drawings
In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings required in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is the utility model discloses assembled four-way cable shaft's structural schematic.
Fig. 2 is the utility model discloses the structural schematic of assembled four-way cable shaft middle bottom plate.
Fig. 3 is the utility model discloses the structure schematic diagram of base in the assembled four-way cable shaft.
Fig. 4 is the utility model discloses the structure schematic diagram of corner post in assembled four-way cable shaft.
Fig. 5 is the utility model discloses the structure schematic diagram of baffle in the assembled four-way cable shaft.
Fig. 6 is the utility model discloses the structure schematic diagram of bolt in the assembled four-way cable shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1:
as shown in fig. 1, the assembled four-way cable well comprises a bottom plate 1, a base 2, corner posts 3, a baffle 4, a cover plate and a bolt 5; the corner posts 3 comprise a first corner post 31, a second corner post 32, a third corner post 33, a fourth corner post 34, a fifth corner post 35, a sixth corner post 36, a seventh corner post 37 and an eighth corner post 38; the baffle 4 includes a first baffle 401, a second baffle 402, a third baffle 403, a fourth baffle 404, a fifth baffle 405, a sixth baffle 406, a seventh baffle 407, an eighth baffle 408, a ninth baffle 409, a tenth baffle 410, an eleventh baffle 411, and a twelfth baffle 412; a fine stone concrete layer is arranged on the top surface of the bottom plate 1, and the bottom plate 1 and the fine stone concrete layer form a combined bottom plate; eight bases 2 are arranged on the bottom plate 1, and the eight bases 2 are arranged according to an octagon; the first corner column 31, the second corner column 32, the third corner column 33, the fourth corner column 34, the fifth corner column 35, the sixth corner column 36, the seventh corner column 37 and the eighth corner column 38 are respectively fixed on the corresponding base 2; a first baffle 401 is fixed at one end of the first corner column 31 through a bolt 5, a second baffle 402 is fixed between the other end of the first corner column 31 and one end of the second corner column 32 through a bolt 5, and a third baffle 403 is fixed at the other end of the second corner column 32 through a bolt 5; a fourth baffle 404 is fixed at one end of the third corner column 33 through a bolt 5, a fifth baffle 405 is fixed between the other end of the third corner column 33 and one end of the fourth corner column 34 through the bolt 5, and a sixth baffle 406 is fixed at the other end of the fourth corner column 34 through the bolt 5; a seventh baffle 407 is fixed to one end of the fifth corner post 35 through a pin 5, an eighth baffle 408 is fixed between the other end of the fifth corner post 35 and one end of the sixth corner post 36 through a pin 5, and a ninth baffle 409 is fixed to the other end of the sixth corner post 36 through a pin 5; a tenth baffle 410 is fixed to one end of the seventh corner post 37 through a pin 5, an eleventh baffle 411 is fixed between the other end of the seventh corner post 37 and one end of the eighth corner post 38 through a pin 5, and a twelfth baffle 412 is fixed to the other end of the eighth corner post 38 through a pin 5; the second baffle 402 and the eighth baffle 408, and the fifth baffle 405 and the eleventh baffle 411 are all parallel to each other, and the second baffle 402, the eighth baffle 408, the fifth baffle 405 and the eleventh baffle 411 form a four-way shaft chamber in combination; the first baffle 401 and the twelfth baffle 412, the third baffle 403 and the fourth baffle 404, the sixth baffle 406 and the seventh baffle 407, and the ninth baffle 409 and the tenth baffle 410 are all parallel to each other, so as to form four cable channels; the cover plate is arranged on the tops of the corner posts 3 and the baffle 4; the bottom plate 1, the base 2, the corner posts 3, the baffle 4, the cover plate and the bolt 5 are all made of GFRP materials. The utility model discloses each part of assembled cross cable shaft adopts novel light, excels in corrosion-resistant GFRP material and makes, guarantees under the prerequisite of cable shaft structural performance, has alleviateed the weight of cable shaft, convenient transportation and installation, and each part has good corrosion resistance, and once the construction is accomplished and is need not later maintenance, reduces maintenance cost, adaptable coastal corrosion environment.
As shown in fig. 2, the bottom plate 1 is formed by splicing a plurality of stiffening panels, two adjacent stiffening panels are connected by a tongue-and-groove, and fine aggregate concrete is poured. Every stiffening panel all includes panel and a plurality of stiffening rib, and even being provided with a plurality of stiffening rib on the panel, the stiffening rib plays the reinforcing effect to make panel and fine aggregate concrete bond better.
As shown in figure 3, the two side walls of the base 2 are provided with grooves, the base 2 is spliced with the corner posts 3, the cross section of the base is slightly smaller than the inner size of the cross section of the cavity of the corner post, and the splicing connection mode is adopted, so that the construction is convenient, and the construction efficiency is improved.
As shown in fig. 4, the first corner column 31, the second corner column 32, the third corner column 33, the fourth corner column 34, the fifth corner column 35, the sixth corner column 36, the seventh corner column 37 and the eighth corner column 38 are all hollow structures, and the wall thickness thereof is not less than 5 mm; the requirement on the structural rigidity of the cable well is ensured. The two ends of the first corner column 31, the second corner column 32, the third corner column 33, the fourth corner column 34, the fifth corner column 35, the sixth corner column 36, the seventh corner column 37 and the eighth corner column 38 are all provided with slot openings, and the slot openings are fixedly connected with the adjacent baffle plates through bolts 5; adopt bolt fixed connection, the construction of being convenient for has improved the efficiency of construction.
As shown in fig. 5, the first baffle 401, the second baffle 402, the third baffle 403, the fourth baffle 404, the fifth baffle 405, the sixth baffle 406, the seventh baffle 407, the eighth baffle 408, the ninth baffle 409, the tenth baffle 410, the eleventh baffle 411 and the twelfth baffle 412 are all box-type structures, and the wall thickness thereof is not less than 4mm, so that the weight of the cable well is reduced on the premise of satisfying the structural load and function. The second baffle 402, the eighth baffle 408, the fifth baffle 405 and the eleventh baffle 411 are formed by splicing two or more box-type side plates, and the two adjacent box-type side plates are fixedly connected through a bolt 5; the first baffle 401, the twelfth baffle 412, the third baffle 403, the fourth baffle 404, the sixth baffle 406, the seventh baffle 407, the ninth baffle 409 and the tenth baffle 410 are all box-type side plates. And the box-type side plates are adopted, so that the overall weight of the four-way cable well is greatly reduced.
As shown in fig. 6, the cross section of the plug 5 is H-shaped.
The cover plate is a grid type cover plate, so that the material consumption is reduced.
A construction method of an assembled four-way cable well comprises the following steps:
the method comprises the following steps: connecting a plurality of stiffening panels through the tongue-and-groove, and splicing into a whole bottom plate 1 with required size; fixing the eight bases 2 on the bottom plate 1 through bolts, wherein the eight bases 2 are arranged according to an octagon;
step two: pouring fine stone concrete on the whole bottom plate 1, and forming a combined bottom plate by the bottom plate 1 and the fine stone concrete;
step three: respectively fixing a first corner post 31, a second corner post 32, a third corner post 33, a fourth corner post 34, a fifth corner post 35, a sixth corner post 36, a seventh corner post 37 and an eighth corner post 38 on the corresponding base 2 in an inserting manner;
step four: fixing a first baffle 401, a second baffle 402, a third baffle 403, a fourth baffle 404, a fifth baffle 405, a sixth baffle 406, a seventh baffle 407, an eighth baffle 408, a ninth baffle 409, a tenth baffle 410, an eleventh baffle 411 and a twelfth baffle 412 on corresponding corner posts respectively through bolts 5, and fixedly connecting two adjacent side plates through the bolts 5;
step five: and (3) mounting the cover plate on the corner post 3 and the baffle 4, and bonding waterproof rubber strips at all the abutted seams to complete the construction of the four-way cable well.
All parts of the assembled four-way cable well of the utility model are designed in a modularized way, are produced in a standardized way, are constructed in an assembled way, improve the production and construction efficiency of the four-way cable well, and shorten the construction period; the utility model discloses all parts of assembled four-way cable shaft adopt pultrusion method to make, have good wholeness and stability.
To sum up, the utility model discloses each part of assembled cross cable shaft adopts novel light weight, excels in corrosion-resistant GFRP material and makes, has guaranteed cable shaft structural performance to lighten the convenient transportation of weight and hoist and mount of cable shaft, the quality of every part is no longer than 40kg, need not large-scale machinery and hoist and mount, and the place is selected in a flexible way, has improved work efficiency, has economical and reasonable, transports convenient, the convenient characteristics of construction. The utility model discloses each part of assembled four-way cable shaft is anticorrosive, has good weatherability and durability, and the completion of once being under construction need not the anticorrosive maintenance in later stage, reduces later stage maintenance cost, adaptable coastal corrosion environment. The utility model discloses assembled four-way cable shaft adopts stiffening panel and pea gravel concrete to form the composite bottom plate, has improved the bulk rigidity of bottom plate, has strengthened four-way cable shaft's overall stability, has avoided the differential settlement problem, adaptable coastal weak soil foundation construction.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An assembled four-way cable well is characterized by comprising a bottom plate (1), a base (2), corner posts (3), a baffle (4), a cover plate and a bolt (5); the corner posts (3) comprise a first corner post (31), a second corner post (32), a third corner post (33), a fourth corner post (34), a fifth corner post (35), a sixth corner post (36), a seventh corner post (37) and an eighth corner post (38); the baffle (4) comprises a first baffle (401), a second baffle (402), a third baffle (403), a fourth baffle (404), a fifth baffle (405), a sixth baffle (406), a seventh baffle (407), an eighth baffle (408), a ninth baffle (409), a tenth baffle (410), an eleventh baffle (411) and a twelfth baffle (412); a fine stone concrete layer is arranged on the top surface of the bottom plate (1), and the bottom plate (1) and the fine stone concrete layer form a combined bottom plate; the base plate (1) is provided with eight bases (2), and the eight bases (2) are arranged according to an octagon; the first corner column (31), the second corner column (32), the third corner column (33), the fourth corner column (34), the fifth corner column (35), the sixth corner column (36), the seventh corner column (37) and the eighth corner column (38) are respectively fixed on the corresponding base (2); a first baffle plate (401) is fixed at one end of the first corner column (31) through a bolt (5), a second baffle plate (402) is fixed between the other end of the first corner column (31) and one end of the second corner column (32) through the bolt (5), and a third baffle plate (403) is fixed at the other end of the second corner column (32) through the bolt (5); a fourth baffle (404) is fixed at one end of the third corner column (33) through a bolt (5), a fifth baffle (405) is fixed between the other end of the third corner column (33) and one end of the fourth corner column (34) through the bolt (5), and a sixth baffle (406) is fixed at the other end of the fourth corner column (34) through the bolt (5); a seventh baffle (407) is fixed to one end of the fifth corner column (35) through a bolt (5), an eighth baffle (408) is fixed to the position between the other end of the fifth corner column (35) and one end of the sixth corner column (36) through the bolt (5), and a ninth baffle (409) is fixed to the other end of the sixth corner column (36) through the bolt (5); a tenth baffle (410) is fixed at one end of the seventh corner post (37) through a bolt (5), an eleventh baffle (411) is fixed between the other end of the seventh corner post (37) and one end of the eighth corner post (38) through the bolt (5), and a twelfth baffle (412) is fixed at the other end of the eighth corner post (38) through the bolt (5); the second baffle (402), the eighth baffle (408), the fifth baffle (405) and the eleventh baffle (411) are parallel to each other, and the second baffle (402), the eighth baffle (408), the fifth baffle (405) and the eleventh baffle (411) are combined to form a four-way well chamber; the first baffle (401) and the twelfth baffle (412), the third baffle (403) and the fourth baffle (404), the sixth baffle (406) and the seventh baffle (407), and the ninth baffle (409) and the tenth baffle (410) are all parallel to each other to form four cable channels; the cover plate is arranged at the tops of the corner posts (3) and the baffle plate (4); the base plate (1), the base (2), the corner posts (3), the baffle plate (4), the cover plate and the bolt (5) are all made of GFRP materials.
2. The assembled four-way cable shaft according to claim 1, wherein the bottom plate (1) is formed by splicing a plurality of stiffening panels, and two adjacent stiffening panels are connected through a tongue-and-groove; every stiffening panel all includes panel and a plurality of stiffening rib, and even on the panel be provided with a plurality of stiffening rib.
3. The assembled four-way cable shaft according to claim 1, wherein grooves are formed in two ends of the base (2), and the base (2) is spliced with the corner posts (3).
4. The fabricated four-way cable well according to claim 1, wherein the first corner post (31), the second corner post (32), the third corner post (33), the fourth corner post (34), the fifth corner post (35), the sixth corner post (36), the seventh corner post (37) and the eighth corner post (38) are all hollow structures, and the wall thickness of the hollow structures is not less than 5 mm.
5. The assembled four-way cable well according to claim 4, wherein the two ends of the first corner column (31), the second corner column (32), the third corner column (33), the fourth corner column (34), the fifth corner column (35), the sixth corner column (36), the seventh corner column (37) and the eighth corner column (38) are provided with slot openings, and the slot openings are fixedly connected with the adjacent baffle plates through the pins (5).
6. The fabricated four-way cable well according to claim 1, wherein the first baffle (401), the second baffle (402), the third baffle (403), the fourth baffle (404), the fifth baffle (405), the sixth baffle (406), the seventh baffle (407), the eighth baffle (408), the ninth baffle (409), the tenth baffle (410), the eleventh baffle (411) and the twelfth baffle (412) are all box-type structures, and the wall thickness of the box-type structures is not less than 4 mm.
7. The assembled four-way cable shaft according to claim 6, wherein the second baffle plate (402), the eighth baffle plate (408), the fifth baffle plate (405) and the eleventh baffle plate (411) are formed by splicing two or more box-type side plates, and the two adjacent box-type side plates are fixedly connected through a bolt (5); the first baffle (401), the twelfth baffle (412), the third baffle (403), the fourth baffle (404), the sixth baffle (406), the seventh baffle (407), the ninth baffle (409) and the tenth baffle (410) are all box-type side plates.
8. The fabricated four-way cable shaft of claim 1, wherein the cover plate is a grid-type cover plate.
9. The fabricated four-way cable shaft according to claim 1, wherein the cross-section of the plug (5) is H-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021323124.0U CN212801655U (en) | 2020-07-08 | 2020-07-08 | Assembled cross cable shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021323124.0U CN212801655U (en) | 2020-07-08 | 2020-07-08 | Assembled cross cable shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212801655U true CN212801655U (en) | 2021-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021323124.0U Active CN212801655U (en) | 2020-07-08 | 2020-07-08 | Assembled cross cable shaft |
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| CN (1) | CN212801655U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753409A (en) * | 2022-05-12 | 2022-07-15 | 中建八局第二建设有限公司 | Prefabricated assembly component for electric power well and construction method of prefabricated assembly component |
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2020
- 2020-07-08 CN CN202021323124.0U patent/CN212801655U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753409A (en) * | 2022-05-12 | 2022-07-15 | 中建八局第二建设有限公司 | Prefabricated assembly component for electric power well and construction method of prefabricated assembly component |
| CN114753409B (en) * | 2022-05-12 | 2023-11-14 | 中建八局第二建设有限公司 | Prefabricated assembly component for electric power well and construction method of prefabricated assembly component |
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