CN109972623A - A kind of construction method and device carrying out pipeline suspension using Bailey beam - Google Patents
A kind of construction method and device carrying out pipeline suspension using Bailey beam Download PDFInfo
- Publication number
- CN109972623A CN109972623A CN201910221583.3A CN201910221583A CN109972623A CN 109972623 A CN109972623 A CN 109972623A CN 201910221583 A CN201910221583 A CN 201910221583A CN 109972623 A CN109972623 A CN 109972623A
- Authority
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- China
- Prior art keywords
- pipeline
- bailey
- sunpender
- foundation pit
- bailey beam
- 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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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
-
- 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
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
-
- 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
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
Abstract
A kind of construction method carrying out pipeline suspension using Bailey beam, Bailey beam is set up using foundation pit two sides crown beam, excavate foundation pit, foundation pit two sides existing facility is connected with pipeline, and hanger is set around pipeline, hanger is fixedly connected with Bailey beam, the earthwork below pipeline is cut out, makes pipeline suspension below Bailey beam.The construction method installation process that the technical program provides is simple, and difficulty of construction is small to reduce security risk, and construction efficiency is high.A kind of constructing device carrying out pipeline suspension using Bailey beam, including hanger, hanger is equipped with upper beam, lower beam and sunpender, and upper beam is fixedly connected with Bailey beam, upper beam and lower beam are fixedly connected with sunpender both ends respectively, and lower beam places pipeline side and is equipped with limiting slot.The constructing device structure that the technical program provides is simple, easy for installation, stabilized structure.
Description
Technical field
The present invention relates to a kind of construction method of pipeline setting more particularly to a kind of pipeline suspension is carried out using Bailey beam
Construction method.Furthermore the invention further relates to a kind of constructing devices that pipeline suspension is carried out using Bailey beam.
Background technique
Reform and opening-up is over 40 years, and national economic development achieves great achievement highly visible, and development construction is very rapid,
China's urbanization sharply develops, urbanization rate is greatly improved.China is still in the strategy of urbanization fast development at present
Opportunity period, urbanization have risen to the national strategy for building up well-off society comprehensively.City size is in expansion gradually, but companion
With and come traffic jam, urban development regional imbalance, " big city disease " also becomes increasingly conspicuous, the case where ur- banization speed is accelerated
Under, tens million of Farmer Labors in City, the traditional traffic above-ground mode in key city can not meet demand.In steady growth, there is still a need for throwings
Provide it is leading in the case where, urban track traffic is and the highest field of demand and supply compatible degree.Therefore, reinforce urban rail transit construction
Not only stretchy economy, while each large and medium-sized city underground engineering construction in the demand whole nation that can satisfy common people is like a raging fire,
Subway work inevitably brings very big influence to existing municipal pipeline, and the changing to move of pipeline has become in subway work with protection
Problem.
Current pipeline, which changes, to be moved the overhung construction in situ for mostly using pipeline and is protected, and project amount is big, at high cost, encounters suspention
When the pipeline that caliber is big, weight is big, segmented crosses wider foundation pit, difficulty of construction is increased, and security risk also increases in work progress
Add.
Summary of the invention
The purpose of the present invention is to provide a kind of construction methods that pipeline suspension is carried out using Bailey beam, to reduce engineering
It measures and reduces difficulty of construction.
A kind of construction method carrying out pipeline suspension using Bailey beam provided by the invention, its step are as follows:
(1) crown beam is set in foundation pit two sides, crown beam height and foundation pit two sides existing facility are adapted；
(2) foundation pit is excavated, its depth is made to be suitable for laying pipeline, crown beam is passed through and pipeline is set, connect foundation pit two sides existing facility；
(3) Bailey bracket assembly Bailey beam is used, Bailey beam length and foundation pit width are adapted；
(4) using crown beam as support, assembled good Bailey beam is mounted on to the top of pipeline；
(5) hanger is set around pipeline, hanger is fixedly connected with Bailey beam；
(6) continue to excavate foundation pit depth to needed for constructing, cut out the earthwork below pipeline, make pipeline suspension below Bailey beam.
Preferably, foundation pit is excavated, so that former pipeline is all exposed earth's surface, and pass through crown beam in former pipeline side and pipeline is set,
So that pipeline is connected foundation pit two sides existing facility, removes former pipeline.
Preferably, the hanger setting steps are as follows:
(a) hanger is made of upper beam, lower beam and sunpender；
(b) upper beam is set in the lower section of Bailey beam, upper beam is fixedly connected with Bailey beam；
(c) it passes through and lower beam is set below pipeline；
(d) upper beam is connected with sunpender and lower beam, sunpender both ends are fixedly connected with upper beam and lower beam respectively.
Preferably, in foundation pit after construction, height where backfill foundation pit to pipeline is set with former pipeline connection foundation pit two sides
It applies, removes frame, remove pipeline, remove Bailey beam, continue to be backfilled to equal with former road surface.
Compared with prior art, construction method provided by the invention has the advantages that
This method is constructed using Bailey beam, and installation process is simple；Whole process is without using the handling appliances such as crane, construction
Difficulty is small；Bailey beam structure is firm, and the suspension pipe that can be consolidated is effectively reduced security risk；The each step of work progress
It can effectively be connected, improve construction efficiency.
A kind of constructing device carrying out pipeline suspension using Bailey beam provided by the invention, including hanger, on hanger
Equipped with upper beam, lower beam and sunpender, the upper beam is fixedly connected with Bailey beam, the upper beam and lower beam respectively with hang
Bar both ends are fixedly connected, and the lower beam places pipeline side and is equipped with limiting slot.
Preferably, hanger is the closure four connected and composed by a upper beam, a lower beam and two sunpender head and the tail
Side shape structure.
Preferably, hanger is " work " the type structure being made of a upper beam, a lower beam and a sunpender.
Preferably, hanger is " [" the type structure being made of a upper beam, a lower beam and a sunpender.
Preferably, hanger is " U " sunpender, and sunpender both ends are fixedly connected with Bailey beam.
Preferably, hanger is respectively provided with a sunpender, three sunpenders at the middle part and both ends of upper beam and lower beam
Both ends are fixedly connected with upper beam and lower beam respectively.
Compared with prior art, constructing device provided by the invention has the advantages that
The constructing device structure provided by the invention for carrying out pipeline suspension using Bailey beam is simple, easy for installation, effective to improve
Construction efficiency, and stabilized structure substantially increase the safety in work progress.
Detailed description of the invention
Fig. 1 is the construction method schematic diagram provided by the invention that pipeline suspension is carried out using Bailey beam.
Fig. 2 is hanger structural schematic diagram provided by the invention.
Fig. 3 is the construction method top view provided by the invention that pipeline suspension is carried out using Bailey beam.
Fig. 4 is Lower Crossbeam Structure schematic diagram provided by the invention.
Primary clustering symbol description
In figure: 1. Bailey beams；2. upper beam；3. crown beam；4. existing facility；5. former pipeline；6. lower beam；7. sunpender；8. pipeline；
9. hanger；10. limiting slot.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawing.It is provided by the invention to utilize shellfish as shown in attached drawing 1 to attached drawing 3
Lei Liang carries out the technical solution of pipeline setting, and its step are as follows:
(1) zanjon is excavated in foundation pit two sides, there is concreting crown beam 3 in zanjon, 3 height of crown beam adds Bailey beam 1 itself
Thickness is equal with foundation pit two sides subgrade and pavement (or utilizing original crown beam)；
(2) so that former pipeline 5 is all exposed earth's surface, and pass through crown beam 3 in former 5 side of pipeline and pipeline 8 is set, make 8 linker of pipeline
Two sides existing facility 4 is cheated, former pipeline 5 is removed；
(3) Bailey bracket assembly Bailey beam 1 is used, 1 length of Bailey beam and foundation pit are of same size；
(4) it is support with two sides crown beam 3, assembled good Bailey beam 1 is mounted on to the top of pipeline 8；
(5) upper beam 2 is installed in the lower section of Bailey beam 1, upper beam 2 is fixed in Bailey beam 1 with bolt, pass through under pipeline 8
Side's installation lower beam 6, connects upper beam 2 and lower beam 6 with sunpender 7, will be respectively fixed on two 7 both ends of sunpender with bolt
The both ends of crossbeam 2 and lower beam 6,2, lower beams 6 of a upper beam and two sunpenders 7 are enough at closed hanger 9；
(6) step (5) are repeated, multiple hangers 9 is installed below Bailey beam 1；
(7) continue to excavate foundation pit depth to needed for constructing, cut out the 8 lower section earthwork of pipeline, be suspended in pipeline 8 by hanger 9
1 lower section of Bailey beam；
(8) in foundation pit after construction, height where backfill foundation pit to pipeline 8 connects foundation pit two sides facility with former pipeline 5, tears open
Except hanger 9, pipeline 8 is removed, removes Bailey beam 1, continues to be backfilled to equal with former road surface.
Embodiment 1
Steps are as follows:
(1) zanjon is excavated in foundation pit two sides, there is concreting crown beam 3 in zanjon, 3 height of crown beam adds Bailey beam 1 itself
Thickness is equal with foundation pit two sides subgrade and pavement (or utilizing original crown beam)；
(2) so that former pipeline 5 is all exposed earth's surface, and pass through crown beam 3 in former 5 side of pipeline and pipeline 8 is set, make 8 linker of pipeline
Two sides existing facility 4 is cheated, former pipeline 5 is removed；
(3) Bailey bracket assembly Bailey beam 1 is used, 1 length of Bailey beam and foundation pit are of same size；
(4) it is support with two sides crown beam 3, assembled good Bailey beam 1 is mounted on to the top of pipeline 8；
(5) upper beam 2 is installed in the lower section of Bailey beam 1, upper beam 2 is fixed in Bailey beam 1 with bolt, pass through under pipeline 8
Side's installation lower beam 6, and pipeline 8 is stuck in the limiting slot 10 on lower beam 6, upper beam 2 and lower beam 6 are connected with sunpender 7,
7 both ends of sunpender are fixed on to the middle part of upper beam 2 and lower beam 6 with bolt, 2, lower beams 6 of a upper beam and one hang
Bar 7 constitutes " work " type hanger 9；
(6) step (5) are repeated, multiple hangers 9 is installed below Bailey beam 1；
(7) continue to excavate foundation pit depth to needed for constructing, cut out the 8 lower section earthwork of pipeline, be suspended in pipeline 8 by hanger 9
1 lower section of Bailey beam；
(8) in foundation pit after construction, height where backfill foundation pit to pipeline 8 connects foundation pit two sides facility with former pipeline 5, tears open
It except frame 9, removes pipeline 8 and removes Bailey beam 1, continue to be backfilled to equal with former road surface.
Embodiment 2
Steps are as follows:
(1) zanjon is excavated in foundation pit two sides, there is concreting crown beam 3 in zanjon, 3 height of crown beam adds Bailey beam 1 itself
Thickness is equal with foundation pit two sides subgrade and pavement (or utilizing original crown beam)；
(2) so that former pipeline 5 is all exposed earth's surface, and pass through crown beam 3 in former 5 side of pipeline and pipeline 8 is set, make 8 linker of pipeline
Two sides existing facility 4 is cheated, former pipeline 5 is removed；
(3) Bailey bracket assembly Bailey beam 1 is used, 1 length of Bailey beam and foundation pit are of same size；
(4) it is support with two sides crown beam 3, assembled good Bailey beam 1 is mounted on to the top of pipeline 8；
(5) upper beam 2 is installed in the lower section of Bailey beam 1, upper beam 2 is fixed in Bailey beam 1 with bolt, pass through under pipeline 8
Side's installation lower beam 6, and pipeline 8 is stuck in the limiting slot on lower beam 6, upper beam 2 and lower beam 6 are connected with sunpender 7, is used
7 both ends of sunpender are fixed on phase the same end of upper beam 2 and lower beam 6 by bolt, 2, lower beams 6 of a upper beam and one
Sunpender 7 constitutes " [" type hanger 9；
(6) step (5) are repeated, multiple hangers 9 is installed below Bailey beam 1；
(7) continue to excavate foundation pit depth to needed for constructing, cut out the 5 lower section earthwork of pipeline, be suspended in pipeline 8 by hanger 9
1 lower section of Bailey beam；
(8) in foundation pit after construction, height where backfill foundation pit to pipeline 8 connects foundation pit two sides facility with former pipeline 5, tears open
It except frame 9, removes pipeline 8 and removes Bailey beam 1, continue to be backfilled to equal with former road surface.
Embodiment 3
Steps are as follows:
(1) zanjon is excavated in foundation pit two sides, there is concreting crown beam 3 in zanjon, 3 height of crown beam adds Bailey beam 1 itself
Thickness is equal with foundation pit two sides subgrade and pavement (or utilizing original crown beam)；
(2) so that former pipeline 5 is all exposed earth's surface, and pass through crown beam 3 in former 5 side of pipeline and pipeline 8 is set, make 8 linker of pipeline
Two sides existing facility 4 is cheated, former pipeline 5 is removed；
(3) Bailey bracket assembly Bailey beam 1 is used, 1 length of Bailey beam and foundation pit are of same size；
(4) it is support with two sides crown beam 3, assembled good Bailey beam 1 is mounted on to the top of pipeline 8；
(5) on pipeline 8 install U-typed sunpender 7,7 sets of U-typed sunpender on pipeline 8,7 both ends of U-typed sunpender are fixed on Bei Lei
On beam 1；
(6) step (5) are repeated, multiple hangers 9 is installed below Bailey beam 1；
(7) continue to excavate foundation pit depth to needed for constructing, cut out the 8 lower section earthwork of pipeline, be suspended in pipeline 8 by hanger 9
1 lower section of Bailey beam；
(8) in foundation pit after construction, height where backfill foundation pit to pipeline 8 connects foundation pit two sides facility with former pipeline 5, tears open
It except frame 9, removes pipeline 8 and removes Bailey beam 1, continue to be backfilled to equal with former road surface.
Embodiment 4
Steps are as follows:
(1) zanjon is excavated in foundation pit two sides, there is concreting crown beam 3 in zanjon, 3 height of crown beam adds Bailey beam 1 itself
Thickness is equal with foundation pit two sides subgrade and pavement (or utilizing original crown beam)；
(2) so that former pipeline 5 is all exposed earth's surface, and pass through crown beam 3 in former 5 side of pipeline and pipeline 8 is set, make 8 linker of pipeline
Two sides existing facility 4 is cheated, former pipeline 5 is removed；
(3) Bailey bracket assembly Bailey beam 1 is used, 1 length of Bailey beam and foundation pit are of same size；
(4) it is support with two sides crown beam 3, assembled good Bailey beam 1 is mounted on to the top of pipeline 8；
(5) upper beam 2 is installed in the lower section of Bailey beam 1, upper beam 2 is fixed in Bailey beam 1 with bolt, pass through under pipeline 8
Side's installation lower beam 6, the both ends and middle part of upper beam 2 and lower beam 6 are connected with three sunpenders 7, will be respectively by three with bolt
7 both ends of root sunpender are fixed on upper beam 2 and lower beam 6；
(6) step (5) are repeated, multiple hangers 9 is installed below Bailey beam 1；
(7) continue to excavate foundation pit depth to needed for constructing, cut out the 8 lower section earthwork of pipeline, be suspended in pipeline 8 by hanger 9
1 lower section of Bailey beam；
(8) in foundation pit after construction, height where backfill foundation pit to pipeline 8 connects foundation pit two sides facility with former pipeline 5, tears open
It except frame 9, removes pipeline 8 and removes Bailey beam 1, continue to be backfilled to equal with former road surface.
The construction method that pipeline suspension is carried out using Bailey beam that the technical program provides, installation process are simple；Entire mistake
For journey without using handling appliances such as cranes, difficulty of construction is small；Bailey beam structure is firm, and the suspension pipe that can be consolidated effectively subtracts
Security risk is lacked；It is also current for personnel and equipment above Bailey beam after setting bridge floor, it is significantly more efficient that resource is utilized；
The each step of work progress can effectively be connected, and improve construction efficiency.
The constructing device structure for carrying out pipeline suspension using Bailey beam that the technical program provides is simple, easy for installation, has
The raising construction efficiency of effect, and stabilized structure, ensure that the personnel safety in work progress.
Claims (10)
1. a kind of construction method for carrying out pipeline suspension using Bailey beam, it is characterised in that include the following steps:
(1) crown beam (3) are set in foundation pit two sides, crown beam (3) is highly adapted with foundation pit two sides existing facility (4)；
(2) foundation pit is excavated, its depth is made to be suitable for laying pipeline (8), crown beam (3) setting pipeline (8) is passed through, pipeline is made to connect foundation pit
Two sides existing facility (4)；
(3) Bailey bracket assembly Bailey beam (1) is used, Bailey beam (1) length and foundation pit width are adapted；
(4) with crown beam (3) for support, assembled good Bailey beam (1) is erected to the top of pipeline (8)；
(5) around pipeline setting hanger (9), hanger (9) is fixedly connected with Bailey beam (1)；
(6) continue to excavate foundation pit depth to needed for constructing, cut out the earthwork below pipeline (8), pipeline (8) is made to be suspended in Bailey beam
(1) lower section.
2. the construction method according to claim 1 for carrying out pipeline suspension using Bailey beam, it is characterised in that: the step
(2) are as follows: foundation pit is excavated, so that former pipeline (5) is all exposed earth's surface, and pass through crown beam setting pipeline (8) in former pipeline (5) side,
So that pipeline (8) is connected foundation pit two sides existing facility, removes former pipeline (5).
3. the construction method according to claim 1 for carrying out pipeline suspension using Bailey beam, it is characterised in that: the suspention
Frame (9) setting steps are as follows:
(a) hanger (9) is made of upper beam (2), lower beam (6) and sunpender (7)；
(b) upper beam (2) are set in the lower section of Bailey beam (1), upper beam (2) is fixedly connected with Bailey beam (1)；
(c) it passes through below pipeline (8) and lower beam (6) is set；
(d) upper beam (2) and lower beam (6) are connected with sunpender, sunpender (7) both ends are solid with upper beam (2) and lower beam (6) respectively
Fixed connection.
4. according to any construction method for carrying out pipeline suspension using Bailey beam of claims 1 to 3, it is characterised in that:
Multiple hangers (9) are arranged in repeating said steps (5) on Bailey beam (1).
5. a kind of constructing device for carrying out pipeline suspension using Bailey beam, including hanger (9), the hanger (9) are equipped with upper
Crossbeam (2), lower beam (6) and sunpender (7), the upper beam (2) are fixedly connected with Bailey beam (1), it is characterised in that: on described
Crossbeam (2) and lower beam (6) are fixedly connected with sunpender (7) both ends respectively, and the lower beam (6) places pipeline side and is equipped with limit
Slot (10).
6. the constructing device according to claim 5 for carrying out pipeline suspension using Bailey beam, it is characterised in that: the suspention
Frame (9) is the closure quadrangle knot connected and composed from beginning to end by a upper beam (2), lower beam (6) He Lianggen sunpender (7)
Structure.
7. the constructing device according to claim 5 for carrying out pipeline suspension using Bailey beam, it is characterised in that: the suspention
Frame (9) is " work " the shape structure being made of a upper beam (2), lower beam (6) He Yigen sunpender (7).
8. the constructing device according to claim 5 for carrying out pipeline suspension using Bailey beam, it is characterised in that: the suspention
Frame (9) is " [" the shape structure being made of a upper beam (2), lower beam (6) He Yigen sunpender (7).
9. the constructing device according to claim 5 for carrying out pipeline suspension using Bailey beam, it is characterised in that: the suspention
Frame (9) is " U " sunpender (7), and sunpender (7) both ends are fixedly connected with Bailey beam (1).
10. the constructing device according to claim 6 for carrying out pipeline suspension using Bailey beam, it is characterised in that: on described
In the middle part of crossbeam (2) and lower beam (6) and both ends are respectively provided with a sunpender (7), and three sunpender (7) both ends are respectively and upper beam
(2) it is fixedly connected with lower beam (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910221583.3A CN109972623A (en) | 2019-03-22 | 2019-03-22 | A kind of construction method and device carrying out pipeline suspension using Bailey beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910221583.3A CN109972623A (en) | 2019-03-22 | 2019-03-22 | A kind of construction method and device carrying out pipeline suspension using Bailey beam |
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| CN109972623A true CN109972623A (en) | 2019-07-05 |
Family
ID=67080031
Family Applications (1)
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| CN201910221583.3A Pending CN109972623A (en) | 2019-03-22 | 2019-03-22 | A kind of construction method and device carrying out pipeline suspension using Bailey beam |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552368A (en) * | 2019-08-05 | 2019-12-10 | 宁波华讯通信服务有限公司 | Mounting method of steel member bracket and steel member bracket |
| CN111577980A (en) * | 2020-04-17 | 2020-08-25 | 中建五局第三建设有限公司 | Nondestructive protection construction method and structure for foundation pit excavation pipeline of linear engineering in old city |
| CN111706712A (en) * | 2020-06-08 | 2020-09-25 | 中建五局土木工程有限公司 | Large-span water supply pipeline supporting system and construction method thereof |
| CN115149488A (en) * | 2022-07-26 | 2022-10-04 | 中建八局第一建设有限公司 | Combined type large-span buried cable suspension protection system based on Bailey beam |
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| CN206976994U (en) * | 2017-05-26 | 2018-02-06 | 中国建筑第八工程局有限公司 | Suspension apparatus for support national defence cable |
| CN109296825A (en) * | 2018-09-29 | 2019-02-01 | 中铁第勘察设计院集团有限公司 | Major diameter bell and spigot water supply concrete pipe suspension protection system and its construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110552368A (en) * | 2019-08-05 | 2019-12-10 | 宁波华讯通信服务有限公司 | Mounting method of steel member bracket and steel member bracket |
| CN111577980A (en) * | 2020-04-17 | 2020-08-25 | 中建五局第三建设有限公司 | Nondestructive protection construction method and structure for foundation pit excavation pipeline of linear engineering in old city |
| CN111706712A (en) * | 2020-06-08 | 2020-09-25 | 中建五局土木工程有限公司 | Large-span water supply pipeline supporting system and construction method thereof |
| CN111706712B (en) * | 2020-06-08 | 2022-03-25 | 中建五局土木工程有限公司 | Large-span water supply pipeline supporting system and construction method thereof |
| CN115149488A (en) * | 2022-07-26 | 2022-10-04 | 中建八局第一建设有限公司 | Combined type large-span buried cable suspension protection system based on Bailey beam |
| CN115149488B (en) * | 2022-07-26 | 2024-03-29 | 中建八局第一建设有限公司 | Combined type large-span buried cable suspension protection system based on bailey beam |
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Application publication date: 20190705 |
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