CN209686444U - A kind of structure for protecting electric power pipe culvert using top suspention plus lower support dual in situ - Google Patents
A kind of structure for protecting electric power pipe culvert using top suspention plus lower support dual in situ Download PDFInfo
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- CN209686444U CN209686444U CN201920067139.6U CN201920067139U CN209686444U CN 209686444 U CN209686444 U CN 209686444U CN 201920067139 U CN201920067139 U CN 201920067139U CN 209686444 U CN209686444 U CN 209686444U
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Abstract
The utility model relates to underground space construction fields; specifically related to a kind of structure for protecting electric power pipe culvert using top suspention plus lower support dual in situ; the utility model is using top suspention plus lower support duplicate protection; electric power pipe culvert is used into Bailey beam suspension protection first; then it applies and pours cover board and cover board beam, Bailey beam suspention is finally taken to cover the duplicate protection measure of plate-girder sling electric power pipe culvert.The utility model avoids power pipeline migration and working-day claims and expense is caused to increase, it is ensured that does not power off during power pipeline protection and underground engineering construction, greatly reduces the influence of society.
Description
Technical field
The present invention relates to underground space construction fields, and in particular to a kind of using top suspention plus the dual original of lower support
The structure of position protection electric power pipe culvert.
Background technique
In recent years, greatly developing with urban transportation, city underground engineering is more and more, and underground engineering often faces
Across all kinds of highly dense manifold lines and cable duct protection problem of foundation pit.Working-day claims and expense increasing are bound to cause if migrating to it
Add, especially urban electric power pipeline migrates, and program is complicated, and social effectiveness is very big.How in the construction process cable duct is accomplished
And information pipeline does not migrate and changes its course, and reaches in-situ conservation, and guarantees its safe operation, is at present in city underground engineering construction
A technical problem.
Summary of the invention
The present invention to solve the deficiencies in the prior art, is provided a kind of suspended in midair using top and adds the protection of lower support dual in situ
The structure and method of electric power pipe culvert.
The present invention is achieved by the following technical solutions:
A kind of structure for protecting electric power pipe culvert using top suspention plus lower support dual in situ, including electric power pipe culvert, institute
It states and is equipped with foundation pit and foundation pit enclosure structure diaphram wall around electric power pipe culvert, set in foundation pit along electric power pipe culvert two sides length direction
There are several lattice columns, below electric power pipe culvert and two sides are to having foundation trench；Several blocks of steel are installed with along electric power pipe culvert length direction
Plate；Width direction of the steel plate below electric power pipe culvert along electric power pipe culvert passes through, and the length of steel plate is greater than the width of electric power pipe culvert
It spends, is welded with suspension hook on steel plate, wirerope or jack are penetrated on suspension hook, the shellfish of two sides above wirerope or jack and electric power pipe culvert
Lei Liang connection suspends steel plate apical side height in midair to electric power pipe culvert bottom absolute altitude by Bailey beam；Several cover boards have been applied in the foundation trench
With cover board beam, the cover board is located at parallel with steel plate below steel plate, width of the cover board length greater than electric power pipe culvert, the cover board beam
Positioned at cover board two sides, cover board beam is support with lattice column among electric power pipe culvert length direction, cover board beam, and cover board beam both ends are with ground
Lower diaphragm wall is support.
The lattice column is steel lattice column.
Several blocks of steel plates are welded as a whole.
The steel plate width is 2m, with a thickness of 20mm.
The foundation trench depth 0.3m.
It is connected between the cover board beam and lattice column using top sealing plate.
The invention also includes a kind of methods for protecting electric power pipe culvert using top suspention plus lower support dual in situ, including
Following steps:
(1) construction of diaphragm wall: then it is continuous to carry out foundation pit enclosure structure underground for progress power pipeline detection first
Wall construction.
(2) lattice column is constructed in foundation pit: along electric power pipe culvert length direction two sides construction lattice column in foundation pit.
(3) electric power pipe culvert soil at both sides is excavated: excavation trial trench first excavates after determining excavation contour line, when electric power pipe culvert
Soil at both sides, which is excavated to after electric power contains bottom absolute altitude, to be stopped excavating.
(4) Bailey beam is suspended in midair: Bailey beam being erected at two sides above electric power pipe culvert first, Bailey beam is collateral with foundation pit two
Then watch box architecture gradually clears up the electric power pipe culvert lower part soil body along one piece of block of electric power pipe culvert length direction as support, per clear
One piece of reason just penetrates one block of steel plate along electric power pipe culvert width direction below electric power pipe culvert, and the length of steel plate is greater than electric power pipe culvert
Width penetrates wirerope or jack in steel plate two sides welded suspending hook after penetrating on suspension hook, passes through Bailey beam using flower basket bolt
Suspend steel plate in midair, steel plate top surface suspention height to electric power pipe culvert bottom absolute altitude continues to clear up electric power pipe culvert after this block steel plate is suspended
Lower piece of the lower part soil body, repeats the above steps, until the electric power pipe culvert lower part soil body penetrates steel plate and entire electric power by complete liquidation
Pipe culvert is completed to suspend in midair by Bailey beam.
(5) foundation trench excavates: below steel plate and foundation trench is excavated downwards in two sides, and foundation trench uses hand excavation.
(6) cover board and cover board beam apply: cover board and cover board beam are applied in foundation trench；Cover board is located at below steel plate and steel plate
In parallel, cover board length is greater than the width of electric power pipe culvert；Cover board beam is located at cover board two sides, cover board beam along electric power pipe culvert length direction,
With lattice column to support among cover board beam, both ends are support with diaphram wall；Cover board and cover board beam are existing after formwork erection
The structure that pouring concrete is formed.
The above-mentioned method that electric power pipe culvert is protected using top suspention plus lower support dual in situ, it is complete to underground engineering construction
Cheng Hou, foundation pit are backfilled to electric power pipe culvert lower part absolute altitude, Bailey beam, cover board, cover board beam and lattice column are removed, after dismounting, to electric power
Pipe culvert two sides symmetrically backfill, and restore electric power pipe culvert reset condition.
As a preferred solution:
In the step (2), lattice column is steel lattice column.
In the step (3), excavation is divided into mechanical excavation part and hand excavation part: mechanical excavation position is electric power
Pipe culvert excavation contour line 1m uses hand excavation with exterior domain, excavation contour line 1m with inner region.
If have power check well in Bailey beam suspention range, package guarantor is carried out to cable using fire-retardant fireproof bellows
Shield protects the power check well inner cable at both ends outside boundary of works area using fastening clip for cable tool is fixed.
In the step (4), the steel plate below electric power pipe culvert is welded as a whole after Bailey beam suspention.
In the step (4), the electric power pipe culvert lower part soil body clears up width about 2.5m every time, clears up depth 0.1m, penetrates
Steel plate width is 2m, with a thickness of 20mm.
In the step (4), before each piece of steel plate suspention, row is infiltrated to the spray of steel plate, electric power pipe culvert two sides and top linked network
It is suspended in midair again after integral reinforcing processing.
In the step (5), foundation trench cutting depth 0.3m.
In the step (6), connected between cover board beam and lattice column using top sealing plate.
The invention has the benefit that in face of all kinds of highly dense collectors across foundation pit in city underground engineering work progress
Electric power pipe culvert is used shellfish using top suspention plus lower support duplicate protection by line and cable duct protection problem, the present invention first
Then thunder beam suspension protection applies and pours cover board and cover board beam, Bailey beam suspention is finally taken to cover plate-girder sling electric power pipe culvert
Duplicate protection measure.The invention avoids power pipeline migrations, and working-day claims and expense to be caused to increase, it is ensured that in electric power
It is not powered off during pipeline protection and underground engineering construction, greatly reduces the influence of society.Later period can also be according to underground engineering
End electric power pipe culvert is restored to the original state in time.Easy for construction, quick, safe, step is simple, and strong operability is saved the area,
Economic benefit and social benefit are significant.
Detailed description of the invention
Fig. 1 is cross-sectional configuration schematic diagram of the invention.
Fig. 2 is vertical schematic view of facade structure of the invention.
Fig. 3 is the structural schematic diagram of cable protection of the invention.
In figure, 1 electric power pipe culvert, 2 Bailey beams, 3 lattice columns, 4 wirerope, 5 cover boards, 6 cover board beams, 7 steel plates, 8 undergrounds are continuous
Wall, 9 fire-retardant fireproof bellowss, 10 anchor ears.
Specific embodiment
Specific embodiments of the present invention are given below, it should be noted that the invention is not limited to implement in detail below
Example, all equivalent transformations made on the basis of the technical solutions of the present application each fall within protection scope of the present invention.
A kind of structure for protecting electric power pipe culvert 1 using top suspention plus lower support dual in situ, including electric power pipe culvert 1,
Foundation pit and foundation pit enclosure structure diaphram wall 8 are equipped with around the electric power pipe culvert 1, foundation pit is interior along 1 liang of side length of electric power pipe culvert
Direction is equipped with several lattice columns 3, the lower section of electric power pipe culvert 1 and two sides to having foundation trench；It is installed with along 1 length direction of electric power pipe culvert
Several blocks of steel plates 7；Width direction of the steel plate 7 below electric power pipe culvert 1 along electric power pipe culvert 1 passes through, and the length of steel plate 7 is greater than
The width of electric power pipe culvert 1 is welded with suspension hook on steel plate 7, penetrates wirerope 4 or jack on suspension hook, wirerope 4 or jack and electric power
The Bailey beam 2 of 1 top two sides of pipe culvert connects, and suspends 7 apical side height of steel plate in midair to 1 bottom absolute altitude of electric power pipe culvert by Bailey beam 2；It is described
Several cover boards 5 and cover board beam 6 are applied in foundation trench, the cover board 5 is located at that 7 lower section of steel plate is parallel with steel plate 7, and 5 length of cover board is big
In the width of electric power pipe culvert 1, the cover board beam 6 is located at 5 two sides of cover board, and cover board beam 6 is along 1 length direction of electric power pipe culvert, cover board beam 6
Centre is support with lattice column 3, and 6 both ends of cover board beam are support with diaphram wall 8.
The lattice column 3 is steel lattice column；Several blocks of steel plates 7 are welded as a whole；7 width of steel plate is
2m, with a thickness of 20mm；The foundation trench depth 0.3m；It is connected between the cover board beam 6 and lattice column 3 using top sealing plate.
The construction method of the above-mentioned structure that electric power pipe culvert is protected using top suspention plus lower support dual in situ, including with
Lower step:
(1) diaphram wall 8 is constructed
Before the construction of foundation pit enclosure structure diaphram wall 8, it is necessary first to detect the property of power pipeline, position, trend,
The information such as buried depth, width, and told somebody what one's real intentions are in detail to construction personnel, the importance of power pipeline is specified, full-time technology people is assigned
Member nurses at the construction field (site) in turn.Foundation pit enclosure structure diaphram wall 8 is carried out after to be detected to construct.
(2) lattice column 3 is constructed in foundation pit
In foundation pit enclosure structure work progress, lattice column 3 in foundation pit can be carried out simultaneously and is constructed.Along 1 length of electric power pipe culvert
Direction two sides are constructed lattice column 3 in advance, and lattice column 3 is that the cover board beam 6 constructed in later step provides upright supports.
Preferably construction is steel lattice column to lattice column 3, convenient for the dismounting in later period.
(3) 1 soil at both sides of electric power pipe culvert is excavated
Before excavation, hand excavation's trial trench first determines 1 position of electric power pipe culvert and trend, then spills excavation using lime
Contour line.In digging process, live special messenger commands mechanical slowly excavation, and site safety person, builder stare at control in place.
Excavation is divided into mechanical excavation part and hand excavation part: mechanical excavation position is 1 excavation contour line of electric power pipe culvert
1m uses hand excavation with exterior domain, excavation contour line 1m with inner region, and mechanical excavation is avoided to destroy electric power pipe culvert 1.
Stop excavating after 1 soil at both sides of electric power pipe culvert is excavated to 1 bottom absolute altitude of electric power pipe culvert.
(4) cable protection before suspending in midair
If there is power check well within the scope of suspension protection, to avoid the long-term exposed fatigue of power check well inner cable or people
To destroy, need cable protection, protection uses fire-retardant fireproof bellows 9, is first cut into fire-retardant fireproof bellows 9
Then two panels wraps up cable, finally using the fixed fire-retardant fireproof bellows 9 of anchor ear 10, as shown in Fig. 3；To guarantee
The safety of cable during suspention fixes the power check well inner cable at both ends outside boundary of works area using fastening clip for cable tool,
Apply rigid protection measure.
(5) Bailey beam 2 is suspended in midair
Using 25 tons of assembling hoist Bailey beams 2, Bailey beam 2 is erected at 1 top two sides of electric power pipe culvert after assembly is good, Bei Lei
Support system of the beam 2 using foundation pit two sides support system structure as Bailey beam 2.Then the 1 lower part soil body of manual cleaning electric power pipe culvert,
As soon as the 1 lower part soil body of electric power pipe culvert is gradually cleared up along 1 length direction piece block of electric power pipe culvert, every one piece of cleaning is under electric power pipe culvert 1
Side penetrates one block of steel plate 7 along 1 width direction of electric power pipe culvert, and the length of the steel plate 7 is greater than the width of electric power pipe culvert 1, this implementation
Width about 2.5m is cleared up in example every time, clears up depth 0.1m, 7 width of steel plate penetrated is 2m, with a thickness of 20mm.Steel plate 7 penetrates
When, steel plate 7 is slowly pulled to designated position using 80 mini-excavators, guarantees that 7 axis of steel plate is vertical with 1 axis of electric power pipe culvert.
A suspension hook is welded every 3m in 7 two sides of steel plate after penetrating, suspension hook material uses HPB300 diameter 28mm reinforcing bar.Then on suspension hook
Wirerope 4 or 5t jack are penetrated, steel plate 7 is suspended in midair by Bailey beam 2 using 4.5t flower basket bolt, 7 top surface of steel plate suspention height is extremely
1 bottom absolute altitude of electric power pipe culvert, so that 7 stress support of steel plate is lived 1 bottom of electric power pipe culvert is advisable.After this section steel plate 7 is suspended, it is further continued for clear
The 1 lower part soil body of next piece of electric power pipe culvert is managed, is repeated the above steps, and so on, until the 1 lower part soil body of electric power pipe culvert is by all clear
It manages and penetrates steel plate 7 and entire electric power pipe culvert 1 completes suspention by Bailey beam 2.It will be under electric power pipe culvert 1 after Bailey beam 2 is suspended in midair
The steel plate 7 of side is welded as a whole, and guarantees suspention securely, reliably.After the completion of suspention, the globality inspection of quality is carried out, really
Protect electric power pipe culvert 1 and 7 contact position of steel plate securely, reliably.In work progress, suspention situation is checked daily in special messenger, find the problem and
When handle.
It, can be to each piece of 1 bottom of electric power pipe culvert steel plate 7, two sides and the top linked network penetrated before the suspention of electric power pipe culvert 1
Spray is suspended in midair again after infiltrating row integral reinforcing.In the following several ways:
1. if the direct pipe laying of power pipeline is laid with, and encapsulating concrete on the outside of power pipeline: then checking encapsulating coagulation
Whether soil there is cracking, loosely falls off, if above situation is more serious, takes artificial reject to repair chisel, bottom weakness concrete
It penetrates after the processing of row integral reinforcing is infiltrated in steel plate 7, two sides and the spray of top linked network and suspends in midair again.
2. if power pipeline is laid in cast-in-place concrete box culvert: checking that whether there is or not crackings for concrete box culvert appearance, loosely
Weakness concrete is taken artificial reject to repair chisel, bottom penetrates steel plate 7, two sides and top by breakage if above situation is more serious
Linked network spray is suspended in midair again after infiltrating the processing of row integral reinforcing.
3. if brick: removing masonry structure, after penetrating steel plate 7 using bottom, then two sides and the spray of top linked network are infiltrated
It is suspended in midair again after the processing of row integral reinforcing.
4. if round tube: first penetrating steel plate 7 in bottom, then hanged again using the mixed encapsulating of linked network spray and after forming Steady base
It hangs.
(6) foundation trench excavates
Below steel plate 7 and foundation trench is excavated downwards in two sides, and foundation trench uses hand excavation, cutting depth 0.3m.
(7) cover board 5 and cover board beam 6 apply
Apply cover board 5 and cover board beam 6 respectively in foundation trench.The cover board 5 is located at 7 lower section, cover board parallel with steel plate 7 of steel plate
Width of 5 length also greater than electric power pipe culvert 1.Cover board beam 6 is located at 5 liang of lateral edge power pipes of cover board and contains the construction of 1 length direction, cover board
Beam 6 is vertical supporting with the lattice column 3 that early period constructs.Cover board 5 and cover board beam 6 are the concrete structure of integral cast-in-situ.Specifically
It is as follows to apply process: carrying out the bed die for being laid with cover board 5 in foundation trench, then re-lays side template after the completion of reinforcing bar binding, then
It carries out reinforcing bar binding again, connects a batch muscle between when assembling reinforcement reserved cover board 5 and between cover board 5 and cover board beam 6.5 template of cover board
After installing, cover board beam 6 then is applied in 5 two sides of cover board.Cover board beam 6 is applied also in being laid with bed die, reinforcing bar in foundation trench
Side template is re-layed after the completion of binding, then reinforcing bar is bound.The finally casting concrete together in 6 template of cover board 5 and cover board beam,
Maintenance, eventually forms the integrated support structure of cover board 5 and cover board beam 6.
It is supported among above-mentioned cover board beam 6 by lattice column 3, both ends are using the diaphram wall 8 for completion of having constructed as branch
Support point is connected between cover board beam 6 and lattice column 3 using top sealing plate.Result in formation of a support system, final cover board 5 and lid
Stress is transmitted on lattice column 3 by plate-girder 6.
So by that can be not necessarily to carry out power pipeline in underground engineering construction to the support that hangs on electric power pipe culvert 1
Migration, while ensure that and not powered off during underground engineering construction, greatly reduce influence of the construction to society.
After by the support that hangs on electric power pipe culvert 1, during carrying out underground engineering construction, divide on cover board beam 6 and cover board 5
Several monitoring points are not set up, carry out the monitoring of ground settlement in monitoring point, surface subsidence monitoring is the technology of existing maturation, former
Which is not described herein again for reason and monitoring instrument used.Here carrying out surface subsidence monitoring can prevent from causing power pipe because of ground settlement
The case where culvert 1 deforms, and then further avoid the case where causing power pipeline fracture because of soil deformation, causing secondary accident
Occur.
(8) it removes and restores
After the completion of underground engineering construction, when foundation pit is backfilled to 1 lower part absolute altitude of electric power pipe culvert, the absolute altitude for measuring groove meets
It can restore after it is required that.Before Bailey beam 2 is removed, concrete foundation is built in 1 bottom pour mold of electric power pipe culvert first, reaches to underlying strength and sets
After meter requires, Bailey beam 2 can be removed.Cover board 5, cover board beam 6 and lattice column 3 are removed, after dismounting, to 1 two sides pair of electric power pipe culvert
Using manually filling within the scope of title backfill, 1 two sides of electric power pipe culvert and top 1m, ramming machine compacting is forbidden using large size compacting machine
Tool.
Embodiment described above, only one kind of the present invention more preferably specific embodiment, those skilled in the art
The usual variations and alternatives that member carries out within the scope of technical solution of the present invention should be all included within the scope of the present invention.
Claims (6)
1. a kind of structure that electric power pipe culvert is protected using top suspention plus lower support dual in situ, including electric power pipe culvert (1),
It is characterized in that: being equipped with foundation pit and foundation pit enclosure structure diaphram wall (8) around the electric power pipe culvert (1), foundation pit is interior along electric power
Pipe culvert (1) two sides length direction is equipped with several lattice columns (3), and below electric power pipe culvert (1) and two sides are to having foundation trench；Along electricity
Solenoid contains (1) length direction and is installed with several pieces of steel plates (7)；The steel plate (7) is below electric power pipe culvert (1) along electric power pipe culvert (1)
Width direction pass through, the length of steel plate (7) is greater than the width of electric power pipe culvert (1), suspension hook is welded on steel plate (7), on suspension hook
Wirerope (4) or jack are penetrated, wirerope (4) or jack connect with the Bailey beam (2) of two sides above electric power pipe culvert (1), pass through
Bailey beam (2) suspends steel plate (7) apical side height in midair to electric power pipe culvert (1) bottom absolute altitude；Applied in the foundation trench several cover boards (5) and
Cover board (5) beam, the cover board (5) are located at parallel with steel plate (7) below steel plate (7), and cover board (5) length is greater than electric power pipe culvert (1)
Width, cover board (5) beam is located at cover board (5) two sides, and cover board beam (6) is along electric power pipe culvert (1) length direction, cover board beam (6)
Centre is support with lattice column (3), and cover board beam (6) both ends are support with diaphram wall (8).
2. the structure according to claim 1 that electric power pipe culvert is protected using top suspention plus lower support dual in situ,
Be characterized in that: the lattice column (3) is steel lattice column (3).
3. the structure according to claim 1 that electric power pipe culvert is protected using top suspention plus lower support dual in situ,
Be characterized in that: several blocks of steel plates (7) are welded as a whole.
4. the structure according to claim 1 that electric power pipe culvert is protected using top suspention plus lower support dual in situ,
Be characterized in that: steel plate (7) width is 2m, with a thickness of 20mm.
5. the structure according to claim 1 that electric power pipe culvert is protected using top suspention plus lower support dual in situ,
It is characterized in that: the foundation trench depth 0.3m.
6. the structure according to claim 1 that electric power pipe culvert is protected using top suspention plus lower support dual in situ,
It is characterized in that: being connect between the cover board beam (6) and lattice column (3) using top sealing plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920067139.6U CN209686444U (en) | 2019-01-16 | 2019-01-16 | A kind of structure for protecting electric power pipe culvert using top suspention plus lower support dual in situ |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920067139.6U CN209686444U (en) | 2019-01-16 | 2019-01-16 | A kind of structure for protecting electric power pipe culvert using top suspention plus lower support dual in situ |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111270681A (en) * | 2020-03-18 | 2020-06-12 | 长江勘测规划设计研究有限责任公司 | Construction method and structure of support structure suitable for crossing foundation pit pipeline group |
| CN111779025A (en) * | 2020-06-19 | 2020-10-16 | 中国一冶集团有限公司 | In-situ protection structure crossing foundation pit municipal pipe network box culvert and construction method |
| CN113629647A (en) * | 2021-07-21 | 2021-11-09 | 中国葛洲坝集团市政工程有限公司 | Large-span ultrahigh-voltage power pipe trench suspension device and method in subway station foundation pit |
| CN113969583A (en) * | 2021-12-07 | 2022-01-25 | 中建五局土木工程有限公司 | Suspension protection construction method for high-voltage cable pipeline crossing middle part of large-span foundation pit |
| CN115653000A (en) * | 2022-11-15 | 2023-01-31 | 中铁隧道勘察设计研究院有限公司 | Gravity pipe gallery in-situ protection structure system in foundation pit range and construction method |
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2019
- 2019-01-16 CN CN201920067139.6U patent/CN209686444U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111270681A (en) * | 2020-03-18 | 2020-06-12 | 长江勘测规划设计研究有限责任公司 | Construction method and structure of support structure suitable for crossing foundation pit pipeline group |
| CN111779025A (en) * | 2020-06-19 | 2020-10-16 | 中国一冶集团有限公司 | In-situ protection structure crossing foundation pit municipal pipe network box culvert and construction method |
| CN113629647A (en) * | 2021-07-21 | 2021-11-09 | 中国葛洲坝集团市政工程有限公司 | Large-span ultrahigh-voltage power pipe trench suspension device and method in subway station foundation pit |
| CN113969583A (en) * | 2021-12-07 | 2022-01-25 | 中建五局土木工程有限公司 | Suspension protection construction method for high-voltage cable pipeline crossing middle part of large-span foundation pit |
| CN113969583B (en) * | 2021-12-07 | 2023-02-14 | 中建五局土木工程有限公司 | Suspension protection construction method for high-voltage cable pipeline crossing middle part of large-span foundation pit |
| CN115653000A (en) * | 2022-11-15 | 2023-01-31 | 中铁隧道勘察设计研究院有限公司 | Gravity pipe gallery in-situ protection structure system in foundation pit range and construction method |
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