CN109742715B - Arrangement structure of electric power pipe trench after transition and modification and electric power pipe trench transition and modification method - Google Patents
Arrangement structure of electric power pipe trench after transition and modification and electric power pipe trench transition and modification method Download PDFInfo
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- CN109742715B CN109742715B CN201910073980.0A CN201910073980A CN109742715B CN 109742715 B CN109742715 B CN 109742715B CN 201910073980 A CN201910073980 A CN 201910073980A CN 109742715 B CN109742715 B CN 109742715B
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- 230000007704 transition Effects 0.000 title claims abstract description 21
- 230000004048 modification Effects 0.000 title claims description 9
- 238000012986 modification Methods 0.000 title claims description 9
- 238000002715 modification method Methods 0.000 title claims description 7
- 238000000034 method Methods 0.000 claims abstract description 15
- 230000008859 change Effects 0.000 claims abstract description 8
- 238000010276 construction Methods 0.000 claims description 50
- 230000005012 migration Effects 0.000 claims description 16
- 238000013508 migration Methods 0.000 claims description 16
- 238000013461 design Methods 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 2
- 238000009412 basement excavation Methods 0.000 description 12
- 230000007246 mechanism Effects 0.000 description 8
- 238000012546 transfer Methods 0.000 description 6
- 239000004567 concrete Substances 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 238000009933 burial Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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Abstract
The invention relates to an arrangement structure of an electric power pipe ditch after the transition and the electric power pipe ditch transition and the change method, which comprises a plurality of small-section electric power pipe ditches buried under the ground, wherein the section size of each small-section electric power pipe ditch is smaller than the size of an original electric power pipe ditch before the transition and the change, and the plurality of small-section electric power pipe ditches are arranged above the designed position of a station top plate of a subway station and are positioned at two sides right above the original electric power pipe ditches.
Description
Technical Field
The invention relates to the technical field of civil engineering construction, in particular to an arrangement structure of a power pipe ditch after transfer and modification and a power pipe ditch transfer and modification method.
Background
The station construction of urban rail transit mostly adopts open cut method construction, in the station construction process, the problem that station and cable trench interfere with each other is unavoidable, therefore, the cable trench needs to be migrated, the migration of the power pipeline has construction methods such as in-situ protection, local migration, large-area migration and the like, the determination of a specific construction scheme needs to be confirmed according to the power supply condition of the power pipeline, the geographic position, the relative position with the subway station (section) and the like, but the inventor finds that if the existing cable trench is migrated according to the original structure, the migration space is limited, so that the migration and the modification of the cable trench cannot be performed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an arrangement structure of the electric power pipe trench after the transition, which is convenient to construct, short in construction period, and capable of meeting the requirement of a transition space by the transition of the electric power pipe trench, and does not interfere with a subway station.
The invention further aims to provide a power pipe ditch migration and modification method, which is convenient to construct and short in construction period, and the power-off time is reduced to the greatest extent on the premise of meeting the requirement of a migration and modification space.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The utility model provides an arrange structure of back electric power trench is changed to migration, includes a plurality of small section electric power trenches of burying below ground, the cross-section size of small section electric power trench is less than the size of original electric power trench before changing to migration, and a plurality of small section electric power trenches are arranged in subway station's station roof design position top, and are located former electric power trench both sides upper position department.
The arrangement structure adopts a plurality of small-section power ditches positioned above two sides of the original power ditches as the power ditches after the transition, can effectively reduce the burial depth of the power ditches after the transition, and solves the problem that the power ditches are limited by the transition space when the power ditches are transition.
Furthermore, cables are laid in the small-section power pipe ditch through a plurality of fixing mechanisms, and the cables are connected into an external power system to maintain external normal power supply.
Further, the fixed establishment includes the fixed plate, the fixed plate is connected perpendicularly with the one end of backup pad, the other end of backup pad is equipped with first clamping plate, be equipped with the waist hole in the backup pad, the backup pad has the second clamping plate through waist hole and bolted connection, the position in the backup pad is adjusted to the second clamping plate accessible waist hole, and first clamping plate and second clamping plate are used for pressing from both sides tightly the cable that waits to fix.
Further, the embedded depth of the small-section power pipe trench is larger than that of the existing municipal pipeline, and damage to the existing municipal pipeline during construction of the small-section power pipe trench is prevented.
Furthermore, the section of the small-section power pipe ditch is rectangular or square, the arrangement of an arch structure designed by the section of the original power pipe ditch is canceled, the requirement for adjusting the burial depth of the power pipe ditch is met, and the stress requirement of the power pipe ditch is met.
Further, a top plate of the subway station at the crossing position of the small-section power pipe trench and the subway station is a bottom foundation of the small-section power pipe trench at the crossing position.
The invention also discloses a method for removing the electric power pipe ditch, removing the crossing part of the original electric power pipe ditch and the subway station, paving a plurality of small-section electric power pipe ditches with the section size smaller than that of the original electric power pipe ditches at the upper positions of the two sides of the original electric power pipe ditches, wherein the small-section electric power pipe ditches are positioned above the design position of the station top plate of the subway station, merging the small-section electric power pipe ditches into the non-crossing part of the original electric power pipe ditches and the subway station, paving cables into the small-section electric power pipe ditches in groups, and accessing into an electric power system.
By adopting the relocation method, the relocation of the electric power pipe ditch meets the requirement of relocation space, and the relocation construction of the electric power pipe ditch is convenient.
Further, the power pipe ditch migration and modification method comprises the following specific steps:
Step 1: and constructing the non-crossing part of the small-section power pipe ditch and the subway station.
Step 2: and constructing station top plates positioned at two sides of the original electric power pipe ditch and at non-crossing parts of the subway station and the original electric power pipe ditch, and constructing crossing parts of the small-section electric power pipe ditch and the subway station by taking the completed station top plates as a base plate after the construction is completed.
Step 3: laying a cable in the small-section power pipe trench, butting the cable in the small-section power pipe trench with the cable in the undetached part of the original power pipe trench, and connecting the cable in the small-section power pipe trench into a power system.
Step 4: and (3) breaking the crossing part of the original electric power pipe ditch and the subway station, and constructing a station top plate of the crossing part of the subway station and the original electric power pipe ditch.
By adopting the construction steps, the power outage time caused by the transition of the electric power pipe ditch can be reduced to the greatest extent, and the influence of construction on the surrounding life electricity is reduced.
Furthermore, the construction method of the small-section power pipe ditch is open excavation construction or underground excavation construction, and the construction can be determined according to the construction environment.
Further, when the open cut construction is adopted, a supporting structure is required to be additionally arranged on the excavated foundation pit, so that collapse of the foundation pit is prevented.
The invention has the beneficial effects that:
The arrangement structure and the electric power pipe ditch migration and modification method are convenient to construct, short in construction period, capable of avoiding interference with a rail transit station, and capable of effectively solving the problem that the existing electric power pipe ditch cannot be migrated and modified due to the limitation of the migration and modification space during migration and modification, and good in social benefit and economic benefit.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
FIG. 1 is a schematic top view of an arrangement according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of an arrangement according to an embodiment of the present invention;
FIG. 3 is a schematic front view of a fixing mechanism according to an embodiment of the present invention;
FIG. 4 is a schematic top view of a fixing mechanism according to an embodiment of the present invention;
FIG. 5 is a schematic view of a slope excavation according to an embodiment of the present invention;
FIG. 6 is a schematic illustration of vertical excavation according to an embodiment of the present invention;
The novel high-efficiency high-power cable comprises a primary power pipe ditch, a small-section power pipe ditch, a rail transit station, a station top plate, an existing municipal pipeline, a fixing mechanism, a fixing plate, a supporting plate, a first clamping plate, a waist hole, bolts, a base, a clamping part, a slope support and a maintenance pile.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As described in the background art, when the existing electric power pipe ditch needs to be changed due to mutual interference with the rail transit station, the existing electric power pipe ditch is limited by the changing space and cannot be changed, and the application provides an arrangement structure of the electric power pipe ditch after changing.
In an exemplary embodiment of the present application, as shown in fig. 1 to 4, an arrangement structure of an after-transition power pipe trench includes two small-section power pipe trenches 2 buried below the ground, the cross-sectional dimension of the small-section power pipe trench is smaller than that of an original power pipe trench 1 before the transition, the small-section power pipe trench is used as the after-transition power pipe trench, the small-section power pipe trench is located above a station top plate 3-1 of a subway station 3, the two small-section power pipe trenches are located above two sides of the original power pipe trench before the transition, the clear distance between the two small-section power pipe trenches and the original power pipe trench meets requirements of construction safety and station top plate sectional construction of the subway, the small-section power pipe trench is not affected by the original power pipe trench during the construction, the construction can be performed under the condition of keeping the original power pipe trench, the power-off time caused by the transition of the power pipe trench is reduced, the depth of the small-section power pipe trench is greater than that of an existing municipal pipeline 4 (tap water pipeline, a sewage pipeline, a natural gas pipeline and the like), the depth of the embedded pipeline can be prevented from meeting the minimum requirements of the existing power pipe trench under the construction.
The section of the small-section power pipe ditch adopts a square shape, and compared with the original power pipe ditch before the transition, the arch structure of the section design of the original power pipe ditch is removed, so that the requirement for adjusting the burial depth of the power pipe ditch is met, and the stress requirement of the power pipe ditch is also met.
The method is characterized in that a small-section electric power pipe ditch and a rail transit station are arranged at the crossing position of the small-section electric power pipe ditch and the rail transit station, a station top plate of the rail transit station is used as a bottom foundation at the crossing position of the small-section electric power pipe ditch and the rail transit station, and during construction, the construction is carried out after the construction of the station top plate at the non-crossing position of the subway station and the original electric power pipe ditch is completed.
The cables in the original power pipe ditches before the transition can be assembled into two small-section power pipe ditches in a grouping mode, the cables are paved in the small-section power pipe ditches through a plurality of fixing mechanisms 5 arranged in the small-section power pipe ditches, and the cables assembled in the small-section power pipe ditches are connected with an external power system, so that external normal power supply can be maintained.
The fixing mechanism can be fixed on the side wall of the small-section power pipe ditch at certain intervals according to design requirements, the fixing mechanism comprises a fixing plate 5-1, the fixing plate is fixed on the pipe ditch wall of the small-section power pipe ditch through bolts, the fixing plate is fixedly connected with one end of a supporting plate 5-2 through vertical welding, a first clamping plate 5-3 is fixedly welded at the other end of the supporting plate through vertical welding, a waist hole 5-4 is formed in the supporting plate, the supporting plate is connected with a second clamping plate through the waist hole and the bolts 5-5, the second clamping plate comprises a base 5-6 and a clamping portion 5-7, the width of the base is larger than that of the waist hole and is used for being in threaded connection with the bolts, the second clamping plate can be prevented from falling off from the supporting plate, the clamping portion is fixedly welded with the base through vertical welding and is used for clamping a cable together with the first clamping plate, the bolts are loosened, and the distance between the first clamping plate and the second clamping plate can be adjusted, so that the laying requirements of cables with different diameters are met.
The small-section power pipe ditch can be constructed by adopting a mature open-cut construction or a hidden-cut construction method, and the construction method is simple and has a short construction period.
The embodiment also discloses a method for transferring and changing the electric power pipe ditch, which comprises the steps of removing the crossing part of the original electric power pipe ditch and the subway station, paving two small-section electric power pipe ditches with the section size smaller than that of the original electric power pipe ditches at the upper positions of the two sides of the original electric power pipe ditch, arranging the electric power pipe ditches and the subway station above the designed position of the station top plate of the subway station to form the arrangement structure of the electric power pipe ditches and the subway station after transferring and changing, merging the non-crossing part (the position of the original electric power pipe ditches at the two sides of the subway station) of the original electric power pipe ditches, paving cables into the small-section electric power pipe ditches in a grouping way, and accessing into an electric power system.
The construction migration method in the embodiment specifically comprises the following steps:
Step 1: and constructing a non-crossing position of the small-section electric power pipe ditch and the rail transit station, and combining the end part of the small-section electric power pipe ditch into the non-crossing part of the original electric power pipe ditch and the subway station. When the periphery of the pre-excavated foundation pit meets the requirements of slope-releasing excavation, slope-releasing excavation is adopted, and a spray anchor supporting structure is arranged according to geological conditions; if the surrounding environment does not meet the slope releasing condition, the guard piles and the pile crown beam structures of the excavated foundation pit are required to be constructed firstly to serve as supporting structures, then the excavation construction is carried out, and a horizontal supporting structure is arranged according to the excavation depth. And cleaning a substrate after the foundation pit is excavated, pouring a cushion layer, then constructing a reinforced concrete structure of the electric power pipe ditch, performing waterproof construction after constructing the reinforced concrete structure of the pipe ditch, and backfilling according to design requirements after the main structure of the pipe ditch is accepted.
When the slope is excavated, as shown in fig. 5, the slope support 6 is needed to be excavated layer by layer until the pit bottom is reached, the slope is excavated in the foundation pit during construction, holes are formed manually or mechanically, dowel bars are placed in the holes and cement paste is injected, a reinforcing steel bar net is installed on the slope, concrete is injected, the dowel bars are combined with the injected concrete surface layer, the self-supporting capacity of rock-soil medium is utilized, unstable soil bodies and deep stable soil layers are connected together by virtue of friction force and cohesive force of the dowel bars and surrounding soil bodies to form a stable combination body, the dowel bar ends are welded with the reinforcing steel bar net according to technical requirements, then the dowel bars, the concrete and the soil bodies form a complex body, and the overall stability of the slope and the overload bearing capacity of the slope top are improved. When vertical excavation is adopted, as shown in fig. 6, guard piles 7 and pile top crown beam structures are adopted as supporting structures.
Step 2: the method comprises the steps of constructing a station top plate of a rail transit station in a segmented mode, constructing a station top plate and a part of side walls of an intersection section of an original electric power pipe ditch and a subway station, constructing the station top plate of a non-intersection part of two sides of the original electric power pipe ditch of the subway station, serving as a bottom foundation of the intersection part of the small-section electric power pipe ditch and the subway station, and constructing the intersection part of the small-section electric power pipe ditch and the subway station according to design requirements after the construction of the station top plate of the part is completed.
In the construction process of the small-section power pipe ditch, a method of underground excavation construction is adopted when the cross part of the small-section power pipe ditch and a subway station and the part which is not crossed with the subway station but is not easy to change a pipeline are constructed, according to the design requirement, according to the geological condition of a construction section, a tunnel advance greenhouse, a step method for excavating earthwork, a grid steel frame and primary spraying concrete are adopted as primary supports, a waterproof structure and a pipe ditch concrete main structure are constructed after the primary supports are completed, and the waterproof treatment of pipe ditch joints of an underground excavation section and an open excavation section is finished.
Step 3: laying cables in the small-section power ditches, grouping the cables in the original power ditches, laying the cables into two small-section power ditches, fixing the cables by using a fixing mechanism, butting the cables in the small-section power ditches with the cables in the undetached parts of the original power ditches, connecting the cables in the small-section power ditches into a power system, and dismantling the parts of the original power ditches, which are intersected with subway stations.
Step 4: and (3) breaking the crossing part of the original electric power pipe ditch and the subway station, and constructing a station top plate of the crossing part of the subway station and the original electric power pipe ditch.
The arrangement structure of the embodiment effectively avoids mutual interference with the electric power pipe ditch during station construction, solves the problem that the electric power pipe ditch is limited by the transfer change space during transfer change, has simple construction method and short construction period, furthest reduces the outage time of the transfer change work of the electric power pipe ditch, reduces the transfer cost of the electric power pipeline, and has good social benefit and economic benefit.
While the foregoing description of the embodiments of the present invention has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the invention, but rather, it is intended to cover all modifications or variations within the scope of the invention as defined by the claims of the present invention.
Claims (6)
1. The utility model provides an arrange structure of electric power trench after moving change, its characterized in that includes a plurality of small-section electric power trench below the buried ground, the cross-sectional size of small-section electric power trench is less than the size of original electric power trench before moving change, and a plurality of small-section electric power trench are arranged above the station roof design position of subway station, and are located the upper position department in former electric power trench both sides, laid the cable through a plurality of fixed establishment in the small-section electric power trench, the cable inserts outside electric power system, fixed establishment includes the fixed plate, the fixed plate is connected with the one end of backup pad perpendicularly, the other end of backup pad is equipped with first clamping plate, be equipped with waist hole in the backup pad, the backup pad is through waist hole and bolted connection second clamping plate, the position in the backup pad is adjusted to the second clamping plate accessible waist hole, and first clamping plate and second clamping plate are used for pressing from both sides tightly waiting fixed cable;
The depth of the small-section power pipe ditch is larger than that of the existing municipal pipeline;
the section of the small-section power pipe ditch is rectangular or square.
2. The arrangement structure of the power pipe trench after the transition of claim 1, wherein a subway station roof at a crossing position of the low-profile power pipe trench and the subway station is a bottom foundation of the low-profile power pipe trench at the crossing position.
3. A power pipe ditch migration and modification method adopting the power pipe ditch arrangement structure after migration and modification according to claim 1 is characterized in that a part of an original power pipe ditch, which is intersected with a subway station, is removed, a plurality of small-section power pipe ditches with the section size smaller than that of the original power pipe ditches are paved at positions above two sides of the original power pipe ditches, the small-section power pipe ditches are positioned above a station top plate design position of the subway station, the small-section power pipe ditches are integrated into a non-intersected part of the original power pipe ditches, which is not removed from the subway station, cables are paved into the small-section power pipe ditches in groups, and the cables are accessed into a power system.
4. The method for repairing a power pipe trench according to claim 3, comprising the steps of:
step 1: constructing a non-crossing part of the small-section power pipe ditch and the subway station;
Step 2: constructing station top plates positioned at two sides of an original electric power pipe ditch and at non-crossing parts of a subway station and the original electric power pipe ditch, and constructing crossing parts of the small-section electric power pipe ditch and the subway station by taking the completed station top plates as a base plate after the construction is completed;
Step 3: laying a cable in the small-section power pipe trench, butting the cable in the small-section power pipe trench with the cable in the undetached part of the original power pipe trench, and connecting the cable in the small-section power pipe trench into a power system;
Step 4: and (3) breaking the crossing part of the original electric power pipe ditch and the subway station, and constructing a station top plate of the crossing part of the subway station and the original electric power pipe ditch.
5. The method for repairing a small-section power pipe trench according to claim 4, wherein the construction method of the small-section power pipe trench is open-cut construction or underground-cut construction, and the construction is determined according to the construction environment.
6. The method for repairing an electric power pipe ditch according to claim 5, wherein when the open cut construction is adopted, a supporting structure is required to be arranged on the excavated foundation pit, so that the collapse of the foundation pit is prevented.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910073980.0A CN109742715B (en) | 2019-01-25 | 2019-01-25 | Arrangement structure of electric power pipe trench after transition and modification and electric power pipe trench transition and modification method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910073980.0A CN109742715B (en) | 2019-01-25 | 2019-01-25 | Arrangement structure of electric power pipe trench after transition and modification and electric power pipe trench transition and modification method |
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| CN109742715A CN109742715A (en) | 2019-05-10 |
| CN109742715B true CN109742715B (en) | 2024-06-07 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4289429A (en) * | 1978-07-17 | 1981-09-15 | Kalina Alexander Ifaevich | Method and apparatus for conveying material in pipeline capsules |
| CN205244617U (en) * | 2015-11-27 | 2016-05-18 | 中国建筑第六工程局有限公司 | Protection architecture who changes pipeline is moved to foundation ditch construction area |
| JP2016084605A (en) * | 2014-10-24 | 2016-05-19 | 株式会社安藤・間 | Construction method for underground structure, and pneumatic caisson used therewith |
| CN205475323U (en) * | 2016-03-25 | 2016-08-17 | 中船第九设计研究院工程有限公司 | Municipal administration pipeline crowd stridees across underground structure in tunnel |
| CN106437724A (en) * | 2016-08-31 | 2017-02-22 | 济南轨道交通集团有限公司 | Subway station constructed by adopting rectangular jacking pipes combined with interval shields and construction method |
| CN209434853U (en) * | 2019-01-25 | 2019-09-24 | 济南轨道交通集团有限公司 | It is a kind of to move the arragement construction for changing rear electric power pipe trench |
-
2019
- 2019-01-25 CN CN201910073980.0A patent/CN109742715B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4289429A (en) * | 1978-07-17 | 1981-09-15 | Kalina Alexander Ifaevich | Method and apparatus for conveying material in pipeline capsules |
| JP2016084605A (en) * | 2014-10-24 | 2016-05-19 | 株式会社安藤・間 | Construction method for underground structure, and pneumatic caisson used therewith |
| CN205244617U (en) * | 2015-11-27 | 2016-05-18 | 中国建筑第六工程局有限公司 | Protection architecture who changes pipeline is moved to foundation ditch construction area |
| CN205475323U (en) * | 2016-03-25 | 2016-08-17 | 中船第九设计研究院工程有限公司 | Municipal administration pipeline crowd stridees across underground structure in tunnel |
| CN106437724A (en) * | 2016-08-31 | 2017-02-22 | 济南轨道交通集团有限公司 | Subway station constructed by adopting rectangular jacking pipes combined with interval shields and construction method |
| CN209434853U (en) * | 2019-01-25 | 2019-09-24 | 济南轨道交通集团有限公司 | It is a kind of to move the arragement construction for changing rear electric power pipe trench |
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| CN109742715A (en) | 2019-05-10 |
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