CN110311343A - A kind of prefabricated steel cylinder concrete circular electric power piping lane with tube socket - Google Patents
A kind of prefabricated steel cylinder concrete circular electric power piping lane with tube socket Download PDFInfo
- Publication number
- CN110311343A CN110311343A CN201910695446.3A CN201910695446A CN110311343A CN 110311343 A CN110311343 A CN 110311343A CN 201910695446 A CN201910695446 A CN 201910695446A CN 110311343 A CN110311343 A CN 110311343A
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- socket
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- tube
- concrete
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- 239000004567 concrete Substances 0.000 title claims abstract description 70
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 65
- 239000010959 steel Substances 0.000 title claims abstract description 65
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 30
- 238000013461 design Methods 0.000 claims abstract description 10
- 238000003466 welding Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 23
- 238000010276 construction Methods 0.000 claims description 10
- 239000002689 soil Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000004873 anchoring Methods 0.000 claims description 3
- 230000003447 ipsilateral effect Effects 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 11
- 239000011150 reinforced concrete Substances 0.000 abstract description 5
- 230000003628 erosive effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000003487 anti-permeability effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035929 gnawing Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- 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
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a kind of prefabricated steel cylinder concrete circular electric power piping lane with tube socket, including armored concrete tube body, tube socket, structure reinforcing bars, tube socket structure reinforcing bars, antiseepage steel cylinder, bellmouth, socket, pre-buried notch, pre-buried load-bearing hanger rail, pre-buried hoisting port and grounding flat steel, antiseepage steel cylinder and bellmouth, socket welding is integral, steel impermeable wound packages enters particular manufacturing craft, pouring reinforcement concrete tube body forms integral reinforced concrete structure, tube socket pours simultaneously with armored concrete tube body, it is integrally formed, pre-buried notch, pre-buried load-bearing hanger rail, pre-buried hoisting port, leakage check hole, after grounding flat steel is embedded in design position before concreting, it is cast among tube body.The beneficial effects of the present invention are: tube wall is relatively thin, quick and easy for installation, anti-permeability performance is good, piping lane inner wall is provided with the pre-buried notch for being easily installed various cable supports, conducive to the installation of equipment in corridor and pipeline, it is provided with metallic ground facility ejector, solves the problems such as electrical erosion.
Description
Technical field
The present invention relates to Impacts Evaluation of Urban Tunnel engineering fields and urban operating mechanism technical field, especially a kind of with the pre- of tube socket
Steel cylinder concrete circle power pipe corridor processed.
Background technique
As the continuous improvement and country of Levels of Social Economic Development are to environmental protection, energy conservation, the promotion of green economy, basic
Construction field more and more uses prefabricated components, especially concrete product field, and prefabricated assembled concrete component is answered
With more and more extensive.In prefabricated electric power piping lane field, currently used is mostly precast concrete rectangle piping lane, although solving
It is assembled the problem of constructing using prefabricated components, but the piping lane of such structure type is excessive in the presence of self weight, sealing joint is bad
The problem of, it causes lifting and transportation cost is high and there are sealing joint performance deficiencies to influence use, additionally, due to concrete
The inhomogeneities that anti-permeability performance is limited by material itself is likely to occur corridor body leakage, and there is also hidden danger of quality.There are also one in engineering
Kind makees the application of electric power piping lane using prestressed concrete round tube, but prestressed component is more sensitive in terms of anticorrosion, and
Prestressing technique is applied in electric power piping lane, there are the risks of electrical erosion, and there is also some problems.
Summary of the invention
The purpose of the present invention is to overcome the shortcomings of the existing technology, provides a kind of prefabricated steel cylinder concrete circular with tube socket
Electric power piping lane.
The purpose of the present invention is achieved through the following technical solutions: a kind of prefabricated steel cylinder concrete circular electric power with tube socket
Piping lane, including armored concrete tube body, tube socket, structure reinforcing bars, tube socket structure reinforcing bars, antiseepage steel cylinder, bellmouth, socket, built-in groove
Mouth, pre-buried load-bearing hanger rail, pre-buried hoisting port and grounding flat steel, the antiseepage steel cylinder include steel plate cylinder, bellmouth and socket, described
Steel plate cylinder and bellmouth and socket welding are integral, and the socket is located at below bellmouth, and the armored concrete tube body includes steel
Reinforced concrete tube body I and armored concrete tube body II, the antiseepage steel cylinder outside is armored concrete tube body I, the steel impermeable
Internal cylinder is armored concrete tube body II, and the structure reinforcing bars include structure reinforcing bars I and structure reinforcing bars II, the armored concrete
It is structure reinforcing bars I outside tube body I, the inside of the armored concrete tube body I is structure reinforcing bars II, and the pre-buried notch is located at steel
The two sides of muscle structure I I, the pre-buried hoisting port are located at the two sides armored concrete tube body I, the structure reinforcing bars, armored concrete
Tube body and antiseepage steel cylinder are connect by grounding flat steel with tube socket and tube socket bar construction, and the tube socket is located at tube socket bar construction
It is interior, it is connect at the top of the pre-buried load-bearing hanger rail and armored concrete tube body II.
Preferably, armored concrete tube body I, armored concrete tube body II and the tube socket pour simultaneously, integrally formed.
Preferably, pre-buried notch, pre-buried load-bearing hanger rail, pre-buried hoisting port, leakage check hole, grounding flat steel are in concrete
After being embedded in design position before pouring, it is cast among tube body.
Preferably, the various Designing of Pre-embedded Pieces in Concrete Structures have anchoring means.
Preferably, prefabricated pedestrian passage plate is located in piping lane, and the pre-buried notch is easily installed cable support, and is provided with
Metallic ground facility ejector.
Preferably, the grounding flat steel has more than one piece and is uniformly located at tube socket both ends.
Preferably, sealing ring is placed in the groove of socket, and two sealing rubber rings are arranged in the spigot seal of every section piping lane, to
After the completion of installation docking, it can think that water filling is sealed inspection between two sealing rubber rings by leakage check hole, the reinforcing bar is mixed
Solidifying soil tube body I has pointing and elastic sealing paste in bellmouth port side, and the armored concrete tube body II is in dock port
There are a pointing and elastic sealing paste in side, and described two ports are not ipsilateral, and the pointing is close to steel plate cylinder.
Preferably, the pre-buried notch and pre-buried load-bearing guide rail bracket thereon and suspender use bolt mounting means.
The invention has the following advantages that
(1), wall thickness is only the 10% of its internal diameter, and the wall of 15%~20% internal diameter (or width) is generally accounted for about than existing product
It is thick smaller, therefore the self weight of unit length is lighter, has saved production, transport, installation cost；
(2), embedded antiseepage steel cylinder and antiseepage interface are specially devised, thoroughly solves impervious matter existing for existing product
Hidden danger is measured, the safety and service life of product are improved；
(3), it is reinforced concrete structure (non-prestressed structure), and is provided with grounding measures, solves existing prestressing force
The hidden danger of quality of electrical erosion existing for product；
(4), easy for installation with pouring integral tube socket with tube body, solve existing circular product it is existing by
There are built-in fitting location dislocation when round tube, which is easy rotation, leads to product dodar erecting bed, when installation, needs to rotate adjustment repeatedly
Position is so that the problem of built-in fitting is in correct design position.In addition, the design of tube socket also adds the wall of the part tube body
Thickness keeps structure safer；
(5), using spigot-and-socket flexible interface, hard-over can be achieved under the premise of guaranteeing sealing performance and be not less than for interface
1.5 degree, the ability for adapting to uneven settlement of foundation is strong, improves product service performance；
(6), can pre-buried notch and other built-in fittings as needed, wherein pre-buried notch and pre-buried load-bearing guide rail are all made of specially
Industry auxiliary products, bracket and suspender thereon use bolt mounting means, are easily installed and dismantle；Than existing product frequently with
Pre-embedded steel slab and the mode of welding installation are more advanced rationally.
Detailed description of the invention
Fig. 1 is the product structure drawing in side sectional elevation of structure of the invention；
Fig. 2 is the product structure profilograph of structure of the invention；
Fig. 3 is the product interface diagram of structure of the invention；
In figure, 1- structure reinforcing bars I, 2- armored concrete tube body I, 3- armored concrete tube body II, 4- antiseepage steel cylinder, 5- knot
The pre-buried notch of structure reinforcing bar II, 6-, the pre-buried hoisting port of 7-, 8- tube socket, the prefabricated pedestrian passage plate of 9-, 10- tube socket bar construction, 11-
Grounding flat steel, the pre-buried load-bearing hanger rail of 12-, 13- bellmouth, 14- socket, 15- cable support, 16- elastic sealing paste, 17- joint filling material
Material, 18- sealing ring, 19- leakage check hole.
Specific embodiment
It is of the invention to reach the technical means and efficacy that the beneficial purpose of scheduled invention is taken further to illustrate,
Below in conjunction with attached drawing and preferred embodiment, to specific embodiment, structure, feature and its effect applied according to the present invention, in detail
It describes in detail bright as after.In the following description, what different " embodiment " or " embodiment " referred to is not necessarily the same embodiment, this
Outside, special characteristic, structure or the feature in one or more embodiments can have any suitable form to combine:
As shown in Figures 1 to 3, a kind of prefabricated steel cylinder concrete circular electric power piping lane with tube socket 8, it is characterised in that: including
Armored concrete tube body, tube socket 8, structure reinforcing bars, tube socket structure reinforcing bars, antiseepage steel cylinder 4, bellmouth 13, socket 14, pre-buried notch 6,
Pre-buried load-bearing hanger rail 12, pre-buried hoisting port 7 and grounding flat steel 11, the antiseepage steel cylinder 4 include steel plate cylinder, bellmouth 13 and socket
14, the steel plate cylinder welds integral with bellmouth 13 and socket 14, forms itself seepage prevention system of single product, the impervious body
The impermeability of system reaches 1.0MPa or more, and the socket 14 is located at 13 lower section of bellmouth, and the armored concrete tube body includes steel
Reinforced concrete tube body I2 and armored concrete tube body II3 is armored concrete tube body I2 outside the antiseepage steel cylinder 4, described anti-
Seeping inside steel cylinder 4 is armored concrete tube body II3, and the structure reinforcing bars include structure reinforcing bars I1 and structure reinforcing bars II5, the steel
It is structure reinforcing bars I1 outside reinforced concrete tube body I2, the inside of the armored concrete tube body I2 is structure reinforcing bars II5, described pre-
The two sides that notch 6 is located at bar construction II are buried, the pre-buried hoisting port 7 is located at the two sides armored concrete tube body I2, the structure
Reinforcing bar, armored concrete tube body and antiseepage steel cylinder 4 are connect by grounding flat steel 11 with tube socket 8 and tube socket bar construction 10, described
Tube socket 8 is located in tube socket bar construction 10, connect at the top of the pre-buried load-bearing hanger rail 12 and armored concrete tube body II3.
By the above-mentioned means, the production of different-diameter, different wall thickness, the model of different length can be manufactured according to actual needs
Product.
As optional embodiment, armored concrete tube body I2, the armored concrete tube body II3 and tube socket 8 are same
When pour, it is integrally formed.
As optional embodiment, pre-buried notch 6, pre-buried load-bearing hanger rail 12, pre-buried hoisting port, leakage check hole 19,
After grounding flat steel 11 is embedded in design position before concreting, it is cast among tube body.
As optional embodiment, the various Designing of Pre-embedded Pieces in Concrete Structures have anchoring means, real with armored concrete tube body
Now anchor.
As optional embodiment, prefabricated pedestrian passage plate 9 is located in piping lane, and the pre-buried notch 6 is easily installed line
Cable bracket 15, and it is provided with metallic ground facility ejector.
As optional embodiment, the grounding flat steel 11 has more than one piece and is uniformly located at 8 both ends of tube socket.
As optional embodiment, sealing ring 18 is placed in the groove of socket 14, and the socket 14 of every section piping lane seals
Two sealing rubber rings are set, after the completion of docking to be installed, can think to fill the water between two sealing rubber rings by leakage check hole 19 into
Row leakage check meets the connector and the entire piping lane body of each single-unit product form of seal request to ensure to realize sealing effect
It is seepage prevention system, the armored concrete tube body I2 has pointing 17 and elastic sealing paste 16, institute in 13 port side of bellmouth
Stating armored concrete tube body II3 has pointing 17 and elastic sealing paste 16 in 14 port side of socket, and described two ports are not
Ipsilateral, the pointing 17 is close to steel plate cylinder.
As optional embodiment, the pre-buried notch 6 and pre-buried load-bearing guide rail bracket thereon and suspender are used
Bolt mounting means.
Specific embodiment: piping lane channel excavation to be laid channel excavation: is carried out by relevant specification of country requirement, it is important to
Guarantee accurate and side slope the safety of groove axis and orientation；Base treatment: to soil property Guan Ji, lightly compacting is simultaneously flattened；It is right
Pipe of concrete base should ensure that its elevation of top surface and flatness when pouring；Piping lane preparatory work before installation: it A, clears up to be installed
Piping lane joint area holds, socket working face, guarantees no-sundries and sharp burrs etc. thereon；B, hold, socket working face uniformly applies
Brush lubricating oil；C, by sealing rubber ring (totally 2) inserted jack groove, and along clockwise and anticlockwise around circle after being triggered with iron wire
All 2 circles of each sliding, to guarantee each position of sealing rubber ring by Uniform Tension；Installation: A, piping lane is lifted by crane and is moved to wait pacify
Holding position, it is slowly close with socket alignment bellmouth.After mouth gentle touchdown bellmouth to be inserted, pause movement, then will installation crossbeam and
Bottle gouard moved by hands (2 side by side) connection, the bottle gouard moved by hands other end are connected to a section piping lane seam crossing.Bottle gouard moved by hands is slowly tensed,
It is inserted into piping lane socket to be installed gradually inward along the horn mouth of bellmouth end face；B, cucurbit drawing should during insertion, be controlled
Tight speed, to guarantee whether having time observation sealing rubber ring occurs gnawing during insertion bad and squeeze out situation, if any then stopping
It only pulls in, and loosens cucurbit, pulled in again after adjusting cushion rubber.If cushion rubber is without gnawing bad and squeezing out situation, then continue slowly to pull in, directly
Until interface gaps size meets design requirement；C, the elevation and axis for checking piping lane installation after meeting design requirement, are stablized
Mounted piping lane position, and the connector water pressure test is carried out with the manual hydraulic press of portable, test pressure, which is subject to, to be designed, test
Without drainage under test pressure, constant pressure is not less than 5 minutes, does not meet such as, then extract connector and reinstall Shi Yaoqiu；It will connect
It is drawn after ground band steel and ground connection wire bonding, it is embedded by design requirement, guarantee that ground connection is good；Piping lane seam is carried out by design requirement
Joint filling；The backfill and compacting of pipe trench soil are carried out by relevant specification of country requirement, and examine backfill and compaction quality, specific technology
Contrast on effect is as shown in table 1.
1 this product of table and the technical effect of existing product compare
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can make the modification of not creative contribution to the present embodiment as needed after reading this specification, as long as in the present invention
Scope of the claims in all by the protection of Patent Law.
Claims (8)
1. a kind of prefabricated steel cylinder concrete circular electric power piping lane with tube socket, it is characterised in that: including armored concrete tube body, pipe
Seat (8), tube socket structure reinforcing bars, antiseepage steel cylinder (4), bellmouth (13), socket (14), pre-buried notch (6), pre-buried is held structure reinforcing bars
Weight hanger rail (12), pre-buried hoisting port (7) and grounding flat steel (11), the antiseepage steel cylinder (4) include steel plate cylinder, bellmouth (13) and
Socket (14), the steel plate cylinder and bellmouth (13) and socket (14) welding are integral, and the socket (14) is located at bellmouth (13)
Lower section, the armored concrete tube body include armored concrete tube body I(2) and armored concrete tube body II(3), the steel impermeable
It is armored concrete tube body I(2 outside cylinder (4)), the internal antiseepage steel cylinder (4) is armored concrete tube body II(3), the knot
Structure reinforcing bar includes structure reinforcing bars I(1) and structure reinforcing bars II(5), the armored concrete tube body I(2) it is external for structure reinforcing bars I
(1), the armored concrete tube body I(2) inside be structure reinforcing bars II(5), the pre-buried notch (6) is located at bar construction II
Two sides, the pre-buried hoisting port (7) is located at armored concrete tube body I(2) two sides, the structure reinforcing bars, concrete reinforced pipe
Body and antiseepage steel cylinder (4) are connect by grounding flat steel (11) with tube socket (8) and tube socket bar construction (10), tube socket (8) position
In tube socket bar construction (10), it is connect at the top of the pre-buried load-bearing hanger rail (12) and armored concrete tube body II(3).
2. a kind of prefabricated steel cylinder concrete circular electric power piping lane with tube socket according to claim 1, it is characterised in that: institute
The armored concrete tube body I(2 stated), armored concrete tube body II(3) and tube socket (8) while pouring, it is integrally formed.
3. a kind of prefabricated steel cylinder concrete circular electric power piping lane with tube socket according to claim 1, it is characterised in that: pre-
Bury notch (6), pre-buried load-bearing hanger rail (12), pre-buried hoisting port, leakage check hole (19), grounding flat steel (11) are poured in concrete
After being embedded in design position before building, it is cast among tube body.
4. a kind of prefabricated steel cylinder concrete circular electric power piping lane with tube socket according to claim 1, it is characterised in that: institute
The various Designing of Pre-embedded Pieces in Concrete Structures stated have anchoring means.
5. a kind of prefabricated steel cylinder concrete circular electric power piping lane with tube socket according to claim 1, it is characterised in that: pre-
Pedestrian passage plate (9) processed is located in piping lane, and the pre-buried notch (6) is easily installed cable support (15), and connects provided with metal
Ground facility ejector.
6. a kind of prefabricated steel cylinder concrete circular electric power piping lane with tube socket according to claim 1, it is characterised in that: institute
The grounding flat steel (11) stated has more than one piece and is uniformly located at tube socket (8) both ends.
7. a kind of prefabricated steel cylinder concrete circular electric power piping lane with tube socket according to claim 1, it is characterised in that: close
Seal (18) is placed in the groove of socket (14), two sealing rubber rings of socket (14) sealed set of every section piping lane, to be installed
After the completion of docking, it can think that water filling is sealed inspection between two sealing rubber rings by leakage check hole (19), the reinforcing bar is mixed
Coagulate soil tube body I(2) there are pointing (17) and elastic sealing paste (16), the concrete reinforced pipe in bellmouth (13) port side
Body II(3) in socket (14) port side have a pointing (17) and elastic sealing paste (16), described two ports not ipsilateral,
The pointing (17) is close to steel plate cylinder.
8. a kind of prefabricated steel cylinder concrete circular electric power piping lane with tube socket according to claim 1, it is characterised in that: institute
The pre-buried notch (6) and pre-buried load-bearing guide rail stated bracket thereon and suspender use bolt mounting means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910695446.3A CN110311343A (en) | 2019-07-30 | 2019-07-30 | A kind of prefabricated steel cylinder concrete circular electric power piping lane with tube socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910695446.3A CN110311343A (en) | 2019-07-30 | 2019-07-30 | A kind of prefabricated steel cylinder concrete circular electric power piping lane with tube socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110311343A true CN110311343A (en) | 2019-10-08 |
Family
ID=68082527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910695446.3A Pending CN110311343A (en) | 2019-07-30 | 2019-07-30 | A kind of prefabricated steel cylinder concrete circular electric power piping lane with tube socket |
Country Status (1)
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| CN (1) | CN110311343A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593310A (en) * | 2019-10-10 | 2019-12-20 | 浙江巨龙管业科技有限公司 | Prestressed steel cylinder concrete pipe with base and preparation method thereof |
| CN110808564A (en) * | 2019-11-08 | 2020-02-18 | 南京聚联输变电安装有限责任公司 | Concrete cable trench construction process |
| CN115142472A (en) * | 2022-06-13 | 2022-10-04 | 北京韩建河山管业股份有限公司 | Prefabricated assembled exhaust valve chamber for small and medium-caliber prestressed concrete cylinder pipes |
| CN115241816A (en) * | 2022-07-04 | 2022-10-25 | 国网河南省电力公司宜阳县供电公司 | Electric power piping lane and support |
| CN118148410A (en) * | 2024-04-07 | 2024-06-07 | 广州白云国际机场建设发展有限公司 | Method for changing old of high-pole lamp of airport apron without stopping airport |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593310A (en) * | 2019-10-10 | 2019-12-20 | 浙江巨龙管业科技有限公司 | Prestressed steel cylinder concrete pipe with base and preparation method thereof |
| CN110808564A (en) * | 2019-11-08 | 2020-02-18 | 南京聚联输变电安装有限责任公司 | Concrete cable trench construction process |
| CN115142472A (en) * | 2022-06-13 | 2022-10-04 | 北京韩建河山管业股份有限公司 | Prefabricated assembled exhaust valve chamber for small and medium-caliber prestressed concrete cylinder pipes |
| CN115142472B (en) * | 2022-06-13 | 2024-03-19 | 北京韩建河山管业股份有限公司 | Prefabricated assembled exhaust valve chamber of small-and-medium-caliber prestressed steel cylinder concrete pipe |
| CN115241816A (en) * | 2022-07-04 | 2022-10-25 | 国网河南省电力公司宜阳县供电公司 | Electric power piping lane and support |
| CN118148410A (en) * | 2024-04-07 | 2024-06-07 | 广州白云国际机场建设发展有限公司 | Method for changing old of high-pole lamp of airport apron without stopping airport |
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