CN104518473A - Suspension protection structure and method of cable box culvert pipeline - Google Patents
Suspension protection structure and method of cable box culvert pipeline Download PDFInfo
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- CN104518473A CN104518473A CN201410853049.1A CN201410853049A CN104518473A CN 104518473 A CN104518473 A CN 104518473A CN 201410853049 A CN201410853049 A CN 201410853049A CN 104518473 A CN104518473 A CN 104518473A
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- box culvert
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Abstract
The invention discloses a suspension protection structure and a method of a cable box culvert pipeline. The structure comprises two parallel shelving girders, a plurality of top section steel, a plurality of bottom section steel and a plurality of suspension mechanisms, wherein the two shelving girders are arranged above the tops of piles on the two sides of a cable box culvert in a longitudinal direction of the cable box culvert; the top section steel is arranged on the two shelving girders at intervals; the bottom section steel is arranged below the cable box culvert via the suspension mechanisms; and the top section steel and the bottom section steel are correspondingly arranged vertically and are perpendicular to the longitudinal direction of the cable box culvert. The structure is provided with the shelving girders, the top section steel, the bottom section steel and the suspension mechanisms, so that suspension protection can be performed on the cable box culvert, early relocation of the pipeline is avoided, the construction period of a project is saved, the cost of the project is lowered, the safety of the pipeline is ensured, the influence of construction on the society is reduced, and a technical guide can be provided for a future similar project.
Description
Technical field
The present invention relates to the realm of building construction, particularly relate to a kind of cable box culvert pipe line suspension protection structure and method.
Background technology
Subway construction is in recent years very important for urban development, and each large-and-medium size cities all start in succession to carry out subway construction.In order to the main tool allowing subway really become Urban Transportation, give full play to its conveniently function, usual subway station and gateway addressing are generally all on city dweller compact district or each traffic major trunk roads.In order to the construction of subway station, early stage usually needs a lot of comprehensive pipeline and moves, and after having constructed in subway station and exit and entrance, then carries out pipeline reset.Relocation of services and reset not only need larger expense, and need a longer time cycle.Especially for cable box culvert class pipeline, resettlement and reset more bother, and social influence is comparatively large, and expense is huge.According to the demand of " National Program for Medium-to Long-term Scientific and Technological Development " and " built environment friendly, conservation-minded society ", " green construction " becomes a direction of metro construction gradually.Especially for the important pipeline of part, in subway station and gateway work progress, no longer to move, but by effective safeguard measure, guarantee being perfectly safe of in work progress pipeline.
Therefore; how to provide a kind of under the prerequisite of safety ensureing cable box culvert pipe line without the need to carrying out relocation of services and duration, the cable box culvert pipe line suspension protection structure reduced costs and method can being saved, become the technical problem that construction circle needs further improvement and optimization.
Summary of the invention
The object of the present invention is to provide a kind of cable box culvert pipe line suspension protection structure and method, avoid the resettlement in early stage of pipeline, save the duration of a project, reduce engineering cost, decrease the impact of construction on society, ensure that the safety of cable box culvert pipe line simultaneously.
For solving the problems of the technologies described above, the invention provides following technical scheme:
A kind of cable box culvert pipe line suspension protection structure, comprise two of be arrangeding in parallel and shelve crossbeam, some tops shaped steel, some bottoms shaped steel and some suspension gears, shelve crossbeam is arranged at the stake of cable box culvert both sides over top along the longitudinal direction of cable box culvert for described two, described some tops shaped steel is arranged at intervals at described two and shelves on crossbeam, described some bottoms shaped steel is arranged at the below of described cable box culvert by described some suspension gears, described some tops shaped steel and described some bottoms shaped steel are corresponding up and down to be arranged and perpendicular to the longitudinal direction of described cable box culvert.
Preferably, steel plate and sand bed is provided with successively from the bottom to top between described some bottoms shaped steel and described cable box culvert.
Preferably, the thickness of described steel plate is 1-2cm, and described sand bed is the yellow sand layer of 2-3cm.
Preferably, described some tops shaped steel is arranged with the spacing of 40-60cm centimetre.
Preferably, the dual setting of described some tops shaped steel.
Preferably, the surrounding of described cable box culvert adopts angle steel protection.
Preferably, described suspension gear comprises two steel wire ropes, and the two ends of described bottom shaped steel are respectively equipped with the hanger for connecting described steel wire rope, and the two ends of top shaped steel are fixed in the upper end of described two steel wire ropes respectively by flower basket bolt.
The invention also discloses a kind of cable box culvert pipe line suspension protection method, comprise the steps:
1st step, what arrange a pair parallel longitudinal setting along described cable box culvert in the over top of the stake of cable box culvert both sides in advance shelves crossbeam, shelve interval on crossbeam described some tops shaped steel is set, described some tops shaped steel and described to shelve crossbeam perpendicular;
2nd step, puts slope excavation cable box culvert soil at both sides, is excavated at the bottom of cable box culvert;
3rd step, the soil body below excavation section by section cable box culvert also carries out suspension protection to this section of cable box culvert, until whole cable box culvert is carried out suspension protection, described 3rd step specifically comprises following sub-step:
31st step, excavates the soil body below one section of cable box culvert;
32nd step, the at least two root bottom part shaped steel made in advance are filled in bottom cable box culvert, described bottom shaped steel is arranged with described top shaped steel is corresponding up and down, a steel plate laid by described bottom shaped steel, the both sides iron sheet of described steel plate encases, then at described steel plate upper berth sand bed, described sand bed and cable box culvert base contact surface levelling;
33rd step, hangs on below corresponding described top shaped steel with suspension gear by described bottom shaped steel;
34th step, after having suspended in midair, encases at cable box culvert surrounding angle steel, avoids box culvert surrounding to collide in subsequent construction impaired.
Preferably, in the 3rd step, section length controls at 40-60cm, and excavation all adopts hand excavation, and the thickness of described steel plate is 1-2cm, and described is the yellow sand layer of 2-3cm.
Preferably, described suspension gear comprises two steel wire ropes, and the two ends of described bottom shaped steel are respectively equipped with the hanger for connecting described steel wire rope, and the two ends of top shaped steel are fixed in the upper end of described two steel wire ropes respectively by flower basket bolt.
From above disclosed technical scheme, compared with prior art, beneficial effect of the present invention is as follows:
1. set up by the over top of the both sides stake at cable box culvert and shelve crossbeam, shelving the top shaped steel that crossbeam can arrange for suspending in midair, suspension gear is adopted the bottom section steel suspended holding in the palm cable box culvert to be contained in the below of top shaped steel, shelve crossbeam and not only may be used for load-bearing cable box culvert and top shaped steel, the gravity of the parts such as bottom shaped steel, and the crossbeam of shelving being arranged on cable box culvert both sides can as the protective barrier of cable box culvert, original position suspension protection is realized to cable box culvert, under the prerequisite without the need to carrying out cable box culvert and relocation of services thereof, ensure that the safety of cable box culvert and internal pipeline.
2. by the original position suspension protection to cable box culvert; avoid the resettlement in early stage of pipeline, such as, can avoid station and gateway construction relocation of services in earlier stage, reduce relocation of services to the impact of society; shorten the time to move of pipeline in early stage simultaneously, effectively save the engineering construction time.
3., by the original position suspension protection to cable box culvert, saved the expense of relocation of services and reset, decreased the impact on surrounding enviroment, reduce engineering cost.
4. by laying steel plate above the shaped steel of bottom; sand bed laid by steel plate; can be levelling with cable box culvert base contact surface by described sand bed; thus the gravity of cable box culvert can be made to be uniformly distributed in shaped steel bottom each get on, make the suspention of whole suspension protective device to cable box culvert more reliable and secure.
Accompanying drawing explanation
Fig. 1 is the cross-sectional configuration schematic diagram of the cable box culvert pipe line suspension protection structure of one embodiment of the invention;
Fig. 2 is the side schematic view of the cable box culvert pipe line suspension protection structure of one embodiment of the invention;
Fig. 3 is the structural representation laying steel plate and sand bed in one embodiment of the invention above the shaped steel of bottom.
In figure: 1-shelves shaped steel, 4-cable box culvert, 5-stake, 6-steel plate, 7-sand bed, 8-steel wire rope, 9-flower basket bolt, 10-hanger, 11-angle steel bottom crossbeam, 2-top shaped steel, 3-.
Embodiment
Below in conjunction with the drawings and specific embodiments, the cable box culvert pipe line suspension protection structure that the present invention proposes is described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, the aid illustration embodiment of the present invention lucidly.For sake of convenience, hereinafter described " on ", D score is consistent with the upper and lower direction of accompanying drawing, but this can not become the restriction of technical solution of the present invention.
Refer to Fig. 1 to Fig. 3, present embodiment discloses a kind of cable box culvert pipe line suspension protection structure, comprise two of be arrangeding in parallel and shelve crossbeam 1, some tops shaped steel 2, some bottoms shaped steel 3 and some suspension gears, shelve crossbeam 1 is arranged at the stake 5 of cable box culvert 4 both sides over top along the longitudinal direction of cable box culvert 4 for described two, the described cross sectional dimensions shelving crossbeam 1 is 1200 × 800mm, described some tops shaped steel 2 is arranged at intervals at described two and shelves on crossbeam 1, described some bottoms shaped steel 3 is arranged at the below of described cable box culvert 4 by described some suspension gears, described some tops shaped steel 2 is corresponding with described some bottoms shaped steel about 3 to be arranged and perpendicular to the longitudinal direction of described cable box culvert 4.On the one hand, set up by the over top of the both sides stake 5 at cable box culvert 4 and shelve crossbeam 1, shelving the top shaped steel 3 that crossbeam 1 can arrange for suspending in midair, suspension gear is adopted the bottom shaped steel 3 holding in the palm cable box culvert 4 to be lifted on the below of top shaped steel 2, shelve crossbeam 1 and not only may be used for load-bearing cable box culvert 4 and top shaped steel 2, the gravity of bottom parts such as shaped steel 3 grade, and the crossbeam 1 of shelving being arranged on cable box culvert 4 both sides can as the strong protective barrier of cable box culvert 4, thus original position suspension protection is realized to cable box culvert 4, under the prerequisite without the need to carrying out cable box culvert 4 and relocation of services thereof, ensure that the safety of pipeline.On the other hand; by the original position suspension protection to cable box culvert 4; avoid the resettlement in early stage of pipeline; such as can avoid station and gateway construction relocation of services in earlier stage; reduce relocation of services to the impact of society; shorten the time to move of pipeline in early stage simultaneously, effectively save the engineering construction time.Again on the one hand, by the original position suspension protection to cable box culvert 4, saved the expense of relocation of services and reset, decreased the impact on surrounding enviroment, reduce engineering cost.
Preferably, steel plate 6 and sand bed 7 is provided with between described some bottoms shaped steel 3 and described cable box culvert 4 from the bottom to top successively.Can be levelling with cable box culvert 4 base contact surface by arranging described sand bed 7, thus the gravity of cable box culvert 4 can be made to be uniformly distributed in bottom each on shaped steel 3, make the suspention of whole suspension protective device to cable box culvert 4 more reliable and secure.
Preferably, the thickness of described steel plate 6 can be 1-2cm, and described sand bed 7 can be the yellow sand layer of 2-3cm.In the present embodiment, the thickness of described steel plate 6 is 1cm, and described sand bed 7 is the yellow sand layer that 2cm is thick.
Preferably, described some tops shaped steel 2 is arranged with the spacing of 40-60cm centimetre.In the present embodiment, spacing is 50 centimetres, long spacing, easily makes the middle part of every section of cable box culvert 4 produce crack because of downwarp, too short spacing, then easily waste the parts such as top shaped steel 2, bottom shaped steel 3, and easily increase workload.
Preferably, the dual setting of described some tops shaped steel 2.Originally the rear and front end of every section of cable box culvert 4 arranged a top shaped steel 2, in order to improve the reliability of suspention, as double insurance, arranged two top shaped steel 2 respectively, i.e. dual setting in the rear and front end of every section of cable box culvert 4.Corresponding, described bottom shaped steel 3 is corresponding dual setting also.
Preferably, the surrounding of described cable box culvert 4 adopts the angle steel 11 of 75 × 9mm to protect.That is, along the longitudinal direction of cable box culvert 4, angle steel 11 is set respectively at four angles of cable box culvert 4.By arranging angle steel 11, when follow-up excavation of foundation pit, the equipment direct collision cable box culverts 4 such as such as digging machine can be avoided, play certain protective effect.
Preferably, it is 24mm steel wire rope 8 that described suspension gear comprises two diameters, the minimum breaking force of described steel wire rope is 281KN, the two ends of described bottom shaped steel 3 are respectively equipped with the hanger 10 for connecting described steel wire rope 8, and the two ends of top shaped steel 2 are fixed in the upper end of described two steel wire ropes 8 respectively by flower basket bolt 9.Described flower basket bolt 9 adopts M27 type lockset spiral mouth, and permission load is 24KN.
Embodiment 2
Refer to Fig. 1 to Fig. 3, the invention also discloses a kind of cable box culvert pipe line suspension protection method, adopt cable box culvert pipe line suspension protective device as described in Example 1, comprise the steps:
1st step, what arrange a pair parallel longitudinal setting along described cable box culvert 4 in the over top of the stake 5 of cable box culvert 4 both sides in advance shelves crossbeam 1, shelve interval on crossbeam 1 arrange some tops shaped steel 2 described, described some tops shaped steel 2 is with described to shelve crossbeam 1 perpendicular.Shelve the gravity that crossbeam 1 not only may be used for load-bearing cable box culvert 4 and the parts such as top shaped steel 2, bottom shaped steel 3, and the crossbeam 1 of shelving being arranged on cable box culvert 4 both sides can as the strong protective barrier of cable box culvert 4.
2nd step, puts slope excavation cable box culvert 4 soil at both sides, is excavated to cable box culvert 4 end.
3rd step, the soil body below excavation section by section cable box culvert 4 also carries out suspension protection to this section of cable box culvert 4, until whole cable box culvert 4 is carried out suspension protection, described 3rd step specifically comprises following sub-step:
31st step, excavates the soil body below one section of cable box culvert 4.
32nd step, the at least two root bottom part shaped steel 3 made in advance are filled in bottom cable box culvert 4, described bottom shaped steel 3 is corresponding with described top shaped steel about 2 to be arranged, described bottom shaped steel 3 is laid a steel plate 6, the both sides iron sheet of described steel plate 6 encases, then at described steel plate 6 upper berth sand bed 7, described sand bed 7 is levelling with cable box culvert 4 base contact surface.Can be levelling with cable box culvert base contact surface by described sand bed, thus the gravity of cable box culvert 4 can be made to be uniformly distributed in shaped steel 3 bottom each get on, make the suspention of whole suspension protective device to cable box culvert 4 more reliable and secure.
33rd step, hangs on described bottom shaped steel 3 below corresponding described top shaped steel 2 with suspension gear.
34th step, after having suspended in midair, encases at the angle steel 11 of cable box culvert 4 surrounding with 75 × 9mm, impaired to avoid the surrounding of cable box culvert 4 to collide in subsequent construction.That is, by arranging angle steel 11, when follow-up excavation of foundation pit, the equipment direct collision cable box culverts 4 such as such as digging machine can be avoided, play certain protective effect.
Preferably, in the 3rd step, section length controls at 40-60cm, and excavation all adopts hand excavation, and the thickness of described steel plate is 1-2cm, and described is the yellow sand layer of 2-3cm.In the present embodiment, spacing is 50 centimetres, long spacing, easily makes the middle part of every section of cable box culvert 4 produce crack because of downwarp, too short spacing, then easily waste the parts such as top shaped steel 3, bottom shaped steel 4, and easily increase workload.
Preferably, described suspension gear comprises two steel wire ropes 8, and the two ends of described bottom shaped steel 3 are respectively equipped with the hanger 10 for connecting described steel wire rope 8, and the two ends of top shaped steel 2 are fixed in the upper end of described two steel wire ropes 8 respectively by flower basket bolt 9.
The present invention is set up by the over top of the both sides stake 5 at cable box culvert 4 and shelves crossbeam 1, shelving the top shaped steel 2 that crossbeam 1 can arrange for suspending in midair, suspension gear is adopted the bottom shaped steel 3 holding in the palm cable box culvert 4 to be lifted on the below of top shaped steel 2, shelve crossbeam 1 and not only may be used for load-bearing cable box culvert 4 and top shaped steel 2, the gravity of bottom parts such as shaped steel 3 grade, and the crossbeam 1 of shelving being arranged on cable box culvert 3 both sides can as the protective barrier of cable box culvert 4, original position suspension protection is realized to cable box culvert 4, thus under the prerequisite without the need to carrying out cable box culvert 4 and internal pipeline resettlement thereof, ensure that the safety of cable box culvert 4 and internal pipeline.On the other hand; by the original position suspension protection to cable box culvert 4; avoid the resettlement in early stage of pipeline; such as can avoid station and gateway construction relocation of services in earlier stage; reduce relocation of services to the impact of society; shorten the time to move of pipeline in early stage simultaneously, effectively save the engineering construction time.Again on the one hand, by the original position suspension protection to cable box culvert 4, saved the expense of relocation of services and reset, decreased the impact on surrounding enviroment, reduce engineering cost.
Foregoing description is only the description to present pre-ferred embodiments, any restriction not to the scope of the invention, and any change that the those of ordinary skill in field of the present invention does according to above-mentioned disclosure, modification, all belong to the protection range of claims.
Claims (10)
1. a cable box culvert pipe line suspension protection structure, it is characterized in that, comprise two of be arrangeding in parallel and shelve crossbeam, some tops shaped steel, some bottoms shaped steel and some suspension gears, shelve crossbeam is arranged at the stake of cable box culvert both sides over top along the longitudinal direction of cable box culvert for described two, described some tops shaped steel is arranged at intervals at described two and shelves on crossbeam, described some bottoms shaped steel is arranged at the below of described cable box culvert by described some suspension gears, described some tops shaped steel and described some bottoms shaped steel are corresponding up and down to be arranged and perpendicular to the longitudinal direction of described cable box culvert.
2. cable box culvert pipe line suspension protection structure as claimed in claim 1, is characterized in that, be provided with steel plate and sand bed successively from the bottom to top between described some bottoms shaped steel and described cable box culvert.
3. cable box culvert pipe line suspension protection structure as claimed in claim 1, it is characterized in that, the thickness of described steel plate is 1-2cm, and described sand bed is the yellow sand layer of 2-3cm.
4. cable box culvert pipe line suspension protection structure as claimed in claim 1, it is characterized in that, described some tops shaped steel is arranged with the spacing of 40-60cm centimetre.
5. cable box culvert pipe line suspension protection structure as claimed in claim 1, is characterized in that, the dual setting of described some tops shaped steel.
6. cable box culvert pipe line suspension protection structure as claimed in claim 1, is characterized in that, the surrounding of described cable box culvert adopts angle steel protection.
7. cable box culvert pipe line suspension protection structure as claimed in claim 1; it is characterized in that; described suspension gear comprises two steel wire ropes; the two ends of described bottom shaped steel are respectively equipped with the hanger for connecting described steel wire rope, and the two ends of top shaped steel are fixed in the upper end of described two steel wire ropes respectively by flower basket bolt.
8. a cable box culvert pipe line suspension protection method, is characterized in that, comprise the steps:
1st step, what arrange a pair parallel longitudinal setting along described cable box culvert in the over top of the stake of cable box culvert both sides in advance shelves crossbeam, shelve interval on crossbeam described some tops shaped steel is set, described some tops shaped steel and described to shelve crossbeam perpendicular;
2nd step, puts slope excavation cable box culvert soil at both sides, is excavated at the bottom of cable box culvert;
3rd step, the soil body below excavation section by section cable box culvert also carries out suspension protection to this section of cable box culvert, until whole cable box culvert is carried out suspension protection, described 3rd step specifically comprises following sub-step:
31st step, excavates the soil body below one section of cable box culvert;
32nd step, the at least two root bottom part shaped steel made in advance are filled in bottom cable box culvert, described bottom shaped steel is arranged with described top shaped steel is corresponding up and down, a steel plate laid by described bottom shaped steel, the both sides iron sheet of described steel plate encases, then at described steel plate upper berth sand bed, described sand bed and cable box culvert base contact surface levelling;
33rd step, hangs on below corresponding described top shaped steel with suspension gear by described bottom shaped steel;
34th step, after having suspended in midair, encases at cable box culvert surrounding angle steel, avoids box culvert surrounding to collide in subsequent construction impaired.
9. cable box culvert pipe line suspension protection method as claimed in claim 8, it is characterized in that, in the 3rd step, section length controls at 40-60cm, and excavation all adopts hand excavation, and the thickness of described steel plate is 1-2cm, and described is the yellow sand layer of 2-3cm.
10. cable box culvert pipe line suspension protection method as claimed in claim 8; it is characterized in that; described suspension gear comprises two steel wire ropes; the two ends of described bottom shaped steel are respectively equipped with the hanger for connecting described steel wire rope, and the two ends of top shaped steel are fixed in the upper end of described two steel wire ropes respectively by flower basket bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410853049.1A CN104518473A (en) | 2014-12-31 | 2014-12-31 | Suspension protection structure and method of cable box culvert pipeline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410853049.1A CN104518473A (en) | 2014-12-31 | 2014-12-31 | Suspension protection structure and method of cable box culvert pipeline |
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| CN104518473A true CN104518473A (en) | 2015-04-15 |
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| CN201410853049.1A Pending CN104518473A (en) | 2014-12-31 | 2014-12-31 | Suspension protection structure and method of cable box culvert pipeline |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107587528A (en) * | 2017-08-27 | 2018-01-16 | 中铁二十四局集团有限公司 | It is a kind of to protect the design and construction method across the underground high voltage cable box culvert of foundation ditch |
| CN108532740A (en) * | 2018-04-24 | 2018-09-14 | 上海市隧道工程轨道交通设计研究院 | Standby pipe structure cavity configuration and its application process are hung under a kind of upper cover building |
| CN108560993A (en) * | 2018-04-24 | 2018-09-21 | 上海市隧道工程轨道交通设计研究院 | Building and garage composite structure and application process under a kind of sandwich type lid |
| CN108755754A (en) * | 2018-06-01 | 2018-11-06 | 江北建设有限公司 | A kind of rainwater box culvert passes through underground utilities protective device |
| CN109680716A (en) * | 2019-01-16 | 2019-04-26 | 济南城建集团有限公司 | A method of electric power pipe culvert is protected using top suspention plus lower support dual in situ |
| CN112578521A (en) * | 2021-02-06 | 2021-03-30 | 郑田来 | 5G communication optical cable assembly and method |
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| JP2002218638A (en) * | 2001-01-23 | 2002-08-02 | Kubota Corp | Power cable protection tube and its protection collar |
| CN202302307U (en) * | 2011-09-30 | 2012-07-04 | 北京市政建设集团有限责任公司 | Pipeline suspension combination in combination with assembly type spread method |
| CN103821110A (en) * | 2012-11-18 | 2014-05-28 | 中国葛洲坝集团股份有限公司 | Box culvert inner form steel form trolley |
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| JP2002218638A (en) * | 2001-01-23 | 2002-08-02 | Kubota Corp | Power cable protection tube and its protection collar |
| CN202302307U (en) * | 2011-09-30 | 2012-07-04 | 北京市政建设集团有限责任公司 | Pipeline suspension combination in combination with assembly type spread method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107587528A (en) * | 2017-08-27 | 2018-01-16 | 中铁二十四局集团有限公司 | It is a kind of to protect the design and construction method across the underground high voltage cable box culvert of foundation ditch |
| CN107587528B (en) * | 2017-08-27 | 2019-04-12 | 中铁二十四局集团有限公司 | It is a kind of to protect the design and construction method across the underground high voltage cable box culvert of foundation pit |
| CN108532740A (en) * | 2018-04-24 | 2018-09-14 | 上海市隧道工程轨道交通设计研究院 | Standby pipe structure cavity configuration and its application process are hung under a kind of upper cover building |
| CN108560993A (en) * | 2018-04-24 | 2018-09-21 | 上海市隧道工程轨道交通设计研究院 | Building and garage composite structure and application process under a kind of sandwich type lid |
| CN108755754A (en) * | 2018-06-01 | 2018-11-06 | 江北建设有限公司 | A kind of rainwater box culvert passes through underground utilities protective device |
| CN109680716A (en) * | 2019-01-16 | 2019-04-26 | 济南城建集团有限公司 | A method of electric power pipe culvert is protected using top suspention plus lower support dual in situ |
| CN109680716B (en) * | 2019-01-16 | 2024-02-09 | 济南城建集团有限公司 | Method for double in-situ protection of electric power culvert by adopting upper suspension and lower support |
| CN112578521A (en) * | 2021-02-06 | 2021-03-30 | 郑田来 | 5G communication optical cable assembly and method |
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