CN107416685A - Installation of gas pipeline construction method and its supporting structure on the downside of a kind of bridge - Google Patents
Installation of gas pipeline construction method and its supporting structure on the downside of a kind of bridge Download PDFInfo
- Publication number
- CN107416685A CN107416685A CN201710758401.7A CN201710758401A CN107416685A CN 107416685 A CN107416685 A CN 107416685A CN 201710758401 A CN201710758401 A CN 201710758401A CN 107416685 A CN107416685 A CN 107416685A
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- Prior art keywords
- bridge
- bracket
- duct section
- hole
- auxiliary fixing
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/10—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses installation of gas pipeline construction method on the downside of a kind of bridge and supporting structure, multiple grooves are opened up on bridge, a hanger hole and two bearing holes are made a call in groove, will treat that roughing-in is cut into multistage；Duct section is sling to outside bridge and being down under the edge of a wing；Cucurbit door frame is installed, guide chain and suspension hook are stretched under the edge of a wing through hanger hole；Suspension hook is hooked drag-line by staff；Duct section declines, and crane hook departs from drag-line；Operation bottle gouard moved by hands slings duct section, delivers under the edge of a wing staff by hanging operating platform under movable type, is connected duct section with bracket by latch closure, the upper end of suspension rod is extended on bridge floor through bearing hole, is connected suspension rod upper end with bridge floor by nut；Auxiliary fixing plate is set under the edge of a wing, oblique connecting plate is welded between auxiliary fixing plate and bracket, other duct sections are as above constructed, the welding of adjacent channel section, completes installation of gas pipeline construction.This method difficulty of construction is small, engineering construction cost is low, stabilized structure.
Description
Technical field
The present invention relates to gas pipeline laying technology field, and in particular to installation of gas pipeline construction party on the downside of a kind of bridge
Method and its supporting structure.
Background technology
Many bridges for being completed and coming into operation not pre-buried gas pipeline support in construction, fires to be laid with bridge
Gas pipeline need to be fixed on the lower section of bridge by feed channel, generally be fixed in the downside of bridge wing plate.In view of Gas Pipe
Situations such as road stretches caused by by such environmental effects, slided, the stability of pipeline laying is most important.
For being completed bridge, currently used cable laying operation scheme is that support of pipelines is fixed on into bridge by planting bolt
On wing plate.But two rows in addition need to be implanted into per side, often arrange four chemical bolts, and to avoid existing thickly dotted steel
Muscle, difficulty of construction is quite big, and expense input is expensive, and engineering construction cost is high.
The technological requirement of chemical bolt construction is complicated, while is also contemplated that the structure situation of existing highway bridge, avoids because of chemistry
To bridge force-bearing structural damage during bolt construction.Chemical bolt requires quality requirement and control also quite strict, than
Cleaning after such as drilling, dry and size directly affects the anchoring stress of chemical bolt.
The content of the invention
It is an object of the present invention to overcome the shortcomings of to mention in background above technology and defect, there is provided a kind of difficulty of construction
It is small, engineering construction cost is low, installation of gas pipeline construction method and its supporting structure on the downside of stabilized structure bridge.
In order to solve the above technical problems, technical scheme proposed by the present invention is：
Installation of gas pipeline construction method on the downside of a kind of bridge, comprises the following steps：
S1, to multiple grooves are opened up, beaten from top to bottom in each groove interior edge bridge along bridge on the pavement of bridge
Three through holes, three through holes arrange that one of them is hanger hole in triangle disposition along bridge, and two other is load-bearing
Hole, two bearing holes are arranged along direction across bridge, and gas pipeline to be laid is cut into multiple duct sections；
S2, duct section middle part bundle drag-line, hook drag-line with crane and sling duct section, duct section is extend out to
The outside of bridge, then the duct section is down to the lower section on the edge of a wing of bridge；
S3, cucurbit door frame is installed in groove on pavement, bottle gouard moved by hands is installed on the crossbeam of the cucurbit door frame,
The bottle gouard moved by hands is installed on the surface of the hanger hole, and the guide chain and suspension hook of bottle gouard moved by hands through hanger hole and stretch to the edge of a wing
Lower section；
S4, hanging basket is hung on the hook of another crane, staff enters in the hanging basket, passes through the crane
Hanging basket is sling, and hanging basket is extend out to the outside of bridge, then hanging basket is down to the lower section on the edge of a wing, makes hanging basket close in step S2
The duct section sling；
Staff in S5, hanging basket holds drag hook and guide chain and suspension hook furthers, and suspension hook is hooked into drag-line；
S6, operation sling the crane of duct section and decline duct section, at the same operate bottle gouard moved by hands by guide chain and suspension hook with
Duct section decline, guide chain be in tensioned state during decline, under the pulling force of guide chain duct section while decline to hanging
The underface movement of frame aperture, the hook of crane departs from drag-line in moving process；
S7, operation bottle gouard moved by hands sling duct section to the position on the downside of the edge of a wing, flat by hanging operation under movable type
Staff is transported to the lower section on the edge of a wing by platform, and bracket is placed in the lower section of duct section by the staff below the edge of a wing, and
Duct section and bracket are fastenedly connected by latch closure, the both ends of the bracket are provided with a lifting through hole, each described to hang
A suspension rod is worn in dress through hole, the lower end of suspension rod is fastenedly connected by nut and bracket, and the upper end of two suspension rods is each passed through
Two bearing holes are extend out to more than bridge floor, and are fastenedly connected the upper end of suspension rod with bridge floor by nut；
S8, suspension hook and drag-line unclamped, operation bottle gouard moved by hands pulls out guide chain and suspension hook from hanger hole, in the downside on the edge of a wing
Auxiliary fixing plate is set, positioning through hole is provided with the middle part of the auxiliary fixing plate, the positioning through hole is being placed in hanger hole just
Lower section, auxiliary fixing plate are set along direction across bridge, and an auxiliary fixing bolt is worn in hanger hole and positioning through hole, and auxiliary is fixed
The upper end of bolt is fastenedly connected by nut and bridge floor, aids in the lower end of fixing bolt to connect by nut and auxiliary fixing plate fastening
Connect, and the downside on auxiliary fixing plate and the edge of a wing is affixed；
S9, two oblique connecting plates are welded between auxiliary fixing plate and bracket, and make two oblique connecting plate difference positions
In the both sides of duct section；
S10, remaining duct section constructed using step S2 to step S9 method, then by adjacent duct section
Welded, that is, complete the cable laying operation of whole gas pipeline.
Gas pipeline is laid on the downside of bridge using the construction method of the present invention, it is not necessary to numerous chemistry is implanted on bridge
Bolt, and only need to open up three through holes on the pavement of bridge, in through hole mounting support structure, substantially reduce
Difficulty of construction, reduce engineering construction cost.
Above-mentioned laying and construction method, it is preferred that the distance between the line of two bearing holes and the hanger hole
For 500mm~800mm.Set herein apart from when oblique connecting plate enough Auxiliary support effects can be played to bracket, avoid
Transverse shakiness occurs for the lower gas pipeline of high wind effect, improves the stability of Pipe installing.
Above-mentioned laying and construction method, it is preferred that in step S7, the bracket is tight by two latch closures and the duct section
It is solidly connected, two latch closures leave gap along the axial arranged of duct section between two latch closures.Fixed using two latch closures
Duct section, and certain interval is reserved between two latch closures, effectively increase the steadiness connected between duct section and bracket.
The technical concept total as one, another aspect of the present invention are additionally provided used in a kind of above-mentioned laying and construction method
Supporting structure, including bracket, latch closure, suspension rod, auxiliary fixing plate, auxiliary fixing bolt and oblique connecting plate, the latch closure are located at
On the bracket, the both ends of bracket open up a lifting through hole respectively in the both sides of latch closure, and the suspension rod is two, two suspension rods point
It is not arranged in two lifting through holes, the upper and lower ends of suspension rod are equipped with nut, and the lower end of suspension rod passes through nut and bracket
It is fastenedly connected, positioning through hole is provided with the middle part of the auxiliary fixing plate, the auxiliary fixing bolt is arranged in the positioning through hole
It is interior, aid in the upper and lower ends of fixing bolt to be equipped with nut, aid in the lower end of fixing bolt tight with auxiliary fixing plate by nut
It is solidly connected, the both ends of the oblique connecting plate are welded with bracket and auxiliary fixing plate respectively.Applied using this supporting structure
Work, without being implanted into numerous chemical bolts on bridge, and three holes need to be only made a call to, wear two suspension rods and the fixed spiral shell of an auxiliary
Bolt, difficulty of construction is small, low engineering cost；In addition, gas pipeline is arranged on bracket using latch closure, pass through two suspension rods
Bracket is fixed on the downside of bridge, forms the fixed form of triangle by auxiliary fixing plate and oblique connecting plate, stable connection,
Reliably, it is simple in construction.
As the further improvement to above-mentioned technical proposal：
Preferably, the latch closure is two, and two latch closures are set along perpendicular to the line direction of two lifting through holes, two
Gap is left between latch closure.So, can make to connect between gas pipeline and bracket more firm.
Preferably, the latch closure includes stationary half and movable semi-ring, and the stationary half is installed on bracket, the work
Dynamic semi-ring is removably connected by bolt with stationary half.During installation, duct section need to be only placed in stationary half, then
Movable semi-ring is connected by bolt and stationary half, easy to operate, connection is reliably.
Preferably, the oblique connecting plate is two pieces, and two pieces of oblique connecting plates are respectively welded in bracket and auxiliary fixing plate
Both ends.In this way, the both sides stress equalization of gas pipeline can be made, the stability of pipeline is further increased.
Preferably, the bracket and auxiliary fixing plate are channel-section steel, and the oblique connecting plate is angle steel；The supporting structure
After installation, the distance between lines of two suspension rods and auxiliary fixing bolt are 500mm~800mm, it is secondary apart from when, oblique company
Fishplate bar can play good Auxiliary support effect to bracket.
Compared with prior art, the advantage of the invention is that：
(1) construction method of the invention only raggle and need to open three through holes on the pavement of bridge in groove, by combustion gas
Duct segments are arranged on special supporting structure, then supporting structure is fastenedly connected i.e. by these three through holes and bridge
Can, relative to the existing construction method that numerous chemical bolts is implanted on bridge floor, method of the invention is punched on bridge floor
Few, difficulty of construction is small, and engineering construction cost is low.
(2) installation fixation is carried out to gas pipeline using special supporting structure, suspension rod, bracket, oblique connecting plate and auxiliary
Help fixed plate to form a structure for being similar to triangle together, avoid gas pipeline from being subjected to displacement from all directions, even
Connect solid and reliable.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the schematic diagram slotted, punched on bridge in construction method of the present invention.
Fig. 2 is that duct section is hung to the schematic diagram below the edge of a wing in construction method of the present invention.
Fig. 3 is the schematic diagram for placing cucurbit door frame in construction method of the present invention on bridge floor.
Fig. 4 is the schematic diagram that guide chain and suspension hook are down under bridge floor in construction method of the present invention.
Fig. 5 is the schematic diagram for being connected suspension hook with drag-line in construction method of the present invention.
Fig. 6 is the schematic diagram that guide chain declines together with duct section in construction method of the present invention.
Fig. 7 is the schematic diagram that hook and the drag-line of crane in construction method of the present invention separate.
Fig. 8 is the schematic diagram that guide chain pulls that duct section rises in construction method of the present invention.
Fig. 9 is the schematic diagram of workmen's mounting support structure under bridge floor in construction method of the present invention.
Figure 10 is the structural representation after the completion of installation of gas pipeline along bridge side.
Figure 11 is the partial enlarged drawing at A in Figure 10.
Figure 12 is the cross-section of bridge schematic diagram after the completion of installation of gas pipeline.
Figure 13 is the partial enlarged drawing at B in Figure 12.
Marginal data：
1st, pavement；2nd, groove；3rd, hanger hole；4th, bearing hole；5th, duct section；6th, drag-line；7th, the edge of a wing；8th, cucurbit door frame；
9th, bottle gouard moved by hands；10th, hanging basket；11st, drag hook；12nd, portable lower extension operating platform；13rd, bracket；14th, latch closure；15th, suspension rod；16、
Auxiliary fixing plate；17th, fixing bolt is aided in；18th, oblique connecting plate；91st, guide chain；92nd, suspension hook；141st, stationary half；142nd, it is living
Dynamic semi-ring.
Embodiment
For the ease of understanding the present invention, the present invention is made below in conjunction with Figure of description and preferred embodiment more complete
Face, meticulously describe, but protection scope of the present invention is not limited to embodiment in detail below.
It should be strongly noted that when a certain element, to be described as " be fixed on, be fixed in, be connected to or be communicated in " another
When on element, it can be directly fixed, affixed, connection or connect on another element or by connecting among other
Fitting is indirectly fixed, affixed, connection or connection are on another element.
Unless otherwise defined, the implication that all technical terms used hereinafter are generally understood that with those skilled in the art
It is identical.Technical term used herein is intended merely to describe the purpose of specific embodiment, is not intended to the limitation present invention
Protection domain.
Embodiment 1：
Installation of gas pipeline construction method on the downside of a kind of bridge of the invention, its schematic flow sheet as shown in Figures 1 to 10,
Mainly include the following steps that：
The first step, on the pavement 1 of bridge along bridge to multiple "T"-shaped grooves 2 are opened up, in each interior edge of groove 2
Bridge makes a call to three through holes from top to bottom, and three through holes arrange that one of them is hanger hole 3 in triangle disposition along bridge, and
Two other is that the distance between bearing hole 4, the line and hanger hole 3 of two bearing holes 4 is 650mm, and two bearing holes 4 are along horizontal stroke
Then gas pipeline (epoxy anticorrosion steel pipe) to be laid is placed on pavement 1, and gas pipeline is cut into by bridge to arrangement
Multiple duct sections 5.
Second step, duct section 5 middle part bundle drag-line 6, hook drag-line 6 by duct section 5 with the hook of a crane
Sling, then duct section 5 is extend out to the outside of bridge, then the duct section 5 is down to the lower section on the edge of a wing 7 of bridge.
3rd step, cucurbit door frame 8 is installed on pavement 1 at groove 2, one is installed in the middle part of the crossbeam of cucurbit door frame 8
Individual bottle gouard moved by hands 9, the bottle gouard moved by hands 9 are installed on the surface of hanger hole 3, and the guide chain 91 of bottle gouard moved by hands 9 and suspension hook 92 are passed through
Hanger hole 3 and the lower section for stretching to the edge of a wing 7.
4th step, hanging basket 10 is hung on the hook of another crane, staff enters in hanging basket 10, risen by this
Heavy-duty machine slings hanging basket 10, and hanging basket 10 is extend out to the outside of bridge, then hanging basket 10 is down to the lower section on the edge of a wing 7, makes hanging basket
10 duct sections 5 sling close in second step.
5th step, the staff to stand in hanging basket 10 hold drag hook 11 and guide chain 91 and suspension hook 92 further, and by suspension hook
92 hook drag-line 6.
The crane that 6th step, operation sling duct section 5 declines duct section 5, while operates bottle gouard moved by hands 9 by guide chain 91
With suspension hook 92 as duct section 5 declines, guide chain 91 is in tensioned state during decline, the duct section 5 under the pulling force of guide chain 91
Moved while declining to the underface of hanger hole 3, the hook of crane departs from drag-line 6 in moving process.
7th step, operation bottle gouard moved by hands 9 sling duct section 5 to predetermined installation site, flat by hanging operation under movable type
Staff is transported to the lower section on the edge of a wing 7 by platform 12, positioned at the work people of the lower section of the edge of a wing 7 (on the lower extension operating platform 12 of movable type)
Bracket 13 is placed in the lower section of duct section 5 by member, and is carried out duct section 5 and bracket 13 tightly by two latch closures 14 on bracket 13
It is solidly connected, gap is left between two latch closures 14, the both ends of bracket 13 offers a lifting through hole, each lift through hole
A suspension rod 15 is inside equipped with, the lower end of suspension rod 15 is fastenedly connected by nut and bracket 13, the upper end point of two suspension rods 15
Not Chuan Guo two bearing holes 4 extend out to more than bridge floor, and the upper end of suspension rod 15 is fastenedly connected with bridge floor by nut.
8th step, the staff under movable type on extension operating platform 12 unclamp suspension hook 92 and drag-line 6, on bridge floor
Workmen operate bottle gouard moved by hands 9 guide chain 91 and suspension hook 92 are pulled out from hanger hole 3, under movable type hang operating platform 12
On staff in the downside on the edge of a wing 7, auxiliary fixing plate 16 is set, the middle part of the auxiliary fixing plate 16 offers positioning through hole,
The positioning through hole is placed in the underface of hanger hole 3, and auxiliary fixing plate 16 is set along direction across bridge, in hanger hole 3 and positioning
An auxiliary fixing bolt 17 is worn in through hole, the upper end of the auxiliary fixing bolt 17 is fastenedly connected by nut and bridge floor,
The lower end for aiding in fixing bolt 17 is fastenedly connected by nut and auxiliary fixing plate 16, and by auxiliary fixing plate 16 and the edge of a wing 7
Downside it is affixed；
9th step, two oblique connecting plates 18 are welded between auxiliary fixing plate 16 and bracket 13, and make two oblique companies
Fishplate bar 18 is located at the both sides of duct section 5 respectively；
Tenth step, remaining duct section 5 constructed using the method for step 2 to step 9, then by adjacent pipe
Road section 5 is welded, that is, completes the cable laying operation of whole gas pipeline.
Embodiment 2：
As shown in Figure 10 to Figure 13, the working supporting structure of installation of gas pipeline, bag on the downside of a kind of bridge of the invention
Include bracket 13, latch closure 14, suspension rod 15, auxiliary fixing plate 16, auxiliary fixing bolt 17 and oblique connecting plate 18.Wherein, latch closure 14
On bracket 13, the both ends of bracket 13 offer a lifting through hole (not shown) respectively in the both sides of latch closure 14.
Suspension rod 15 is two, and two suspension rods 15 are arranged in two lifting through holes respectively, and the upper and lower ends of suspension rod 15 are equipped with nut, hang
The lower end of bar 15 is fastenedly connected by nut and bracket 13.The middle part of auxiliary fixing plate 16 is provided with positioning through hole, aids in fixed spiral shell
Bolt 17 is arranged in the positioning through hole, and the upper and lower ends of auxiliary fixing bolt 17 are equipped with nut, aid under fixing bolt 17
End is fastenedly connected by nut with auxiliary fixing plate 16.The both ends of oblique connecting plate 18 respectively with bracket 13 and auxiliary fixing plate 16
Welding.
In the present embodiment, the quantity of latch closure 14 is two, and two latch closures 14 are along perpendicular to the line side of two lifting through holes
To setting, and gap is left between two latch closures 14.Latch closure 14 is made up of two parts, including stationary half 141 and activity
Semi-ring 142.Wherein, stationary half 141 is installed on bracket 13, and movable semi-ring 142 is removable by bolt and stationary half 141
The connection unloaded.
In the present embodiment, oblique connecting plate 18 is two pieces, and two pieces of oblique connecting plates 18 are respectively welded at bracket 13 and auxiliary
The both ends of fixed plate 16.Bracket 13 and auxiliary fixing plate 16 use channel-section steel, and oblique connecting plate 18 uses angle steel.
When the supporting structure is installed, bracket 13 is first placed in the lower section of gas pipeline, gas pipeline is placed on fixed half
On ring 141, movable semi-ring 142 is placed in stationary half 141, entered stationary half 141 and movable semi-ring 142 by bolt
Row is fastenedly connected, and gas pipeline is fixed on bracket 13, and then two suspension rods 15 are located in two lifting through holes respectively,
The lower end of suspension rod 15 is fastenedly connected by bolt and bracket 13, and the upper end of suspension rod 15 passes through spiral shell through the bearing hole 4 on bridge
Mother is fastenedly connected the upper end of suspension rod 15 and bridge floor, then affixed at hanger hole 3 on the downside of bridge floor to set auxiliary fixing plate 16,
Make the positioning through hole on auxiliary fixing plate 16 corresponding with hanger hole 3, auxiliary fixing bolt 17 is located in positioning through hole and hung
In frame aperture 3, the lower end of auxiliary fixing bolt 17 is fastenedly connected by bolt and auxiliary fixing plate 16, aids in the upper of fixing bolt 17
End is fastenedly connected by bolt and bridge floor, and it is 500mm to make the distance between line and auxiliary fixing bolt 17 of two suspension rods 15
~800mm, oblique connecting plate 18 is welded at the both ends of bracket 13 and the both ends of auxiliary fixing plate 16, is formed from class in terms of bridge side
It is similar to the supporting structure of triangle.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (8)
1. installation of gas pipeline construction method on the downside of a kind of bridge, comprises the following steps：
S1, on the pavement of bridge (1) along bridge to multiple grooves (2) are opened up, in each groove (2) interior edge bridge from up to
Under make a call to three through holes, three through holes arrange that one of them is hanger hole (3) in triangle disposition along bridge, two other
For bearing hole (4), two bearing holes (4) are arranged along direction across bridge, and gas pipeline to be laid is cut into multiple duct sections
(5)；
S2, duct section (5) middle part binding drag-line (6), hook drag-line (6) with crane and sling duct section (5), by pipeline
Section (5) extend out to the outside of bridge, then the duct section (5) is down to the lower section on the edge of a wing (7) of bridge；
S3, it is provided with pavement (1) on groove (2) place installation cucurbit door frame (8), the crossbeam of the cucurbit door frame (8)
Bottle gouard moved by hands (9), the bottle gouard moved by hands (9) are installed on the surface of the hanger hole (3), the guide chain (91) of bottle gouard moved by hands (9)
Through hanger hole (3) and the lower section of the edge of a wing (7) is stretched to suspension hook (92)；
S4, hanging basket (10) is hung on the hook of another crane, staff enters in the hanging basket (10), risen by this
Heavy-duty machine slings hanging basket (10), and hanging basket (10) is extend out to the outside of bridge, then hanging basket (10) is down under the edge of a wing (7)
Side, the duct section (5) for making hanging basket (10) be sling close in step S2；
Staff in S5, hanging basket (10) holds drag hook (11) and guide chain (91) and suspension hook (92) furthers, by suspension hook (92) hook
Firmly drag-line (6)；
The crane that S6, operation sling duct section (5) declines duct section (5), while operates bottle gouard moved by hands (9) by guide chain (91)
With suspension hook (92) as duct section (5) declines, guide chain (91) is in tensioned state during decline, under the pulling force of guide chain (91)
Duct section (5) moves while declining to the underface of hanger hole (3), the hook and drag-line of crane in moving process
(6) depart from；
S7, operation bottle gouard moved by hands (9) sling duct section (5) to precalculated position, will by hanging operating platform (12) under movable type
Staff is transported to the lower section of the edge of a wing (7), and bracket (13) is placed in duct section (5) by the staff below the edge of a wing (7)
Lower section, and duct section (5) and bracket (13) are fastenedly connected by latch closure (14), the both ends of the bracket (13) are opened
There is a lifting through hole, wear a suspension rod (15) in each lifting through hole, the lower end of suspension rod (15) passes through nut and bracket
(13) it is fastenedly connected, the upper end of two suspension rods (15) is each passed through two bearing holes (4) and extend out to more than bridge floor, and passes through nut
The upper end of suspension rod (15) is fastenedly connected with bridge floor；
S8, suspension hook (92) and drag-line (6) unclamped, operation bottle gouard moved by hands (9) is by guide chain (91) and suspension hook (92) from hanger hole (3)
Pull out, auxiliary fixing plate (16) be set in the downside of the edge of a wing (7), positioning through hole is provided with the middle part of the auxiliary fixing plate (16),
The positioning through hole is placed in the underface of hanger hole (3), auxiliary fixing plate (16) is set along direction across bridge, in hanger hole (3) and
An auxiliary fixing bolt (17) is worn in positioning through hole, the upper end for aiding in fixing bolt (17) is connected by nut and bridge floor fastening
Connecing, the lower end of auxiliary fixing bolt (17) is fastenedly connected by nut and auxiliary fixing plate (16), and by auxiliary fixing plate (16)
It is affixed with the downside of the edge of a wing (7)；
S9, two oblique connecting plates (18) are welded between auxiliary fixing plate (16) and bracket (13), and make two oblique connections
Plate (18) is located at the both sides of duct section (5) respectively；
S10, remaining duct section (5) constructed using step S2 to step S9 method, then by adjacent duct section
(5) welded, that is, complete the cable laying operation of whole gas pipeline.
2. installation of gas pipeline construction method on the downside of bridge according to claim 1, it is characterised in that：Two load-bearing
The distance between the line and the hanger hole (3) in hole (4) are 500mm~800mm.
3. installation of gas pipeline construction method on the downside of bridge according to claim 1 or 2, it is characterised in that：In step S7,
The bracket (13) is fastenedly connected by two latch closures (14) with the duct section (5), and two latch closures (14) are along duct section
(5) axial arranged, gap is left between two latch closures (14).
A kind of 4. support on the downside of bridge according to any one of claims 1 to 3 used in installation of gas pipeline construction method
Structure, it is characterised in that：Including bracket (13), latch closure (14), suspension rod (15), auxiliary fixing plate (16), auxiliary fixing bolt
(17) it is located at oblique connecting plate (18), the latch closure (14) on the bracket (13), the both ends of bracket (13) are in latch closure (14)
Both sides open up a lifting through hole respectively, the suspension rod (15) is two, and two suspension rods (15) are arranged in described in two respectively hangs
Fill in through hole, the lower end of suspension rod (15) is fastenedly connected by nut and bracket (13), is opened in the middle part of the auxiliary fixing plate (16)
There is positioning through hole, the auxiliary fixing bolt (17) is arranged in the positioning through hole, and the lower end of auxiliary fixing bolt (17) leads to
Cross nut to be fastenedly connected with auxiliary fixing plate (16), the both ends of the oblique connecting plate (18) are solid with bracket (13) and auxiliary respectively
Fixed board (16) welds.
5. supporting structure according to claim 4, it is characterised in that：The latch closure (14) is two, two latch closures (14)
Set along perpendicular to the line direction of two lifting through holes, gap is left between two latch closures (14).
6. supporting structure according to claim 4, it is characterised in that：The latch closure (14) include stationary half (141) and
Movable semi-ring (142), the stationary half (141) are installed on bracket (13), and the movable semi-ring (142) is by bolt and admittedly
Determine semi-ring (141) removably to connect.
7. supporting structure according to claim 4, it is characterised in that：The oblique connecting plate (18) is two pieces, and two pieces tiltedly
The both ends in bracket (13) and auxiliary fixing plate (16) are respectively welded to connecting plate (18).
8. the supporting structure according to any one of claim 4~7, it is characterised in that：The bracket (13) and auxiliary are solid
Fixed board (16) is channel-section steel, and the oblique connecting plate (18) is angle steel；After the supporting structure installation, the company of two suspension rods (15)
Line is 500mm~800mm with aiding in the distance between fixing bolt (17).
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| CN114790691A (en) * | 2022-04-14 | 2022-07-26 | 通号建设集团有限公司 | Construction method for steel structure pipe gallery channel under bridge |
| CN116608324A (en) * | 2023-05-29 | 2023-08-18 | 中铁二十四局集团有限公司 | Underground pipeline reinforcing structure below river-crossing bridge under tunnel construction |
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