CN107558375A - The construction method that contact net bar is torn down and reconstructed during a kind of Framed underpass bridge - Google Patents
The construction method that contact net bar is torn down and reconstructed during a kind of Framed underpass bridge Download PDFInfo
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- CN107558375A CN107558375A CN201710816999.0A CN201710816999A CN107558375A CN 107558375 A CN107558375 A CN 107558375A CN 201710816999 A CN201710816999 A CN 201710816999A CN 107558375 A CN107558375 A CN 107558375A
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- contact net
- net bar
- bar
- main body
- frame bridge
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Abstract
The construction method that contact net bar is torn down and reconstructed during a kind of jacked frame bridge.It includes carrying out track strengthening to railroad track, H profile steel is coupled with reinforcing middle cross beam I-steel, incidental contact net bar is arranged in H profile steel, existing contact net bar electric power system is changed and moved on incidental contact net bar, then existing contact net bar is removed, after Framed underpass bridge is in place, incidental contact net bar is changed and moved on steel plate pre-buried on frame bridge, after having coupled, resume contacts the steps such as net electric power system.The construction method that contact net bar is torn down and reconstructed during Framed underpass bridge provided by the invention can make the contact net bar for changing shifting form a firm system with track strengthening, with easy for construction, laborsaving, less manpower, high efficient construction, while can guarantee that the safe operation of railway in work progress.
Description
Technical field
The invention belongs to Railway Site technical field of construction, more particularly to contact net bar during a kind of jacked frame bridge
The construction method torn down and reconstructed.
Background technology
In Framed underpass bridge work progress, Framed underpass bridge locates to run into contact net bar be present sometimes in place,
Because contact net electric power system can not stop being damaged to contact net power supply and contact net bar, therefore, in order to avoid frame
The contact net bar that bridge formation is located in place, have no alternative but to take to change and move script road line alignment, so as to without changing transposing net-fault bar
Such frame bridge design, it is clear that so can significantly increase difficulty of construction and cost.
The content of the invention
In order to solve the above problems, it is an object of the invention to provide contact net bar during a kind of jacked frame bridge to tear down and reconstruct
Construction method.
In order to achieve the above object, the construction method bag that contact net bar is torn down and reconstructed during Framed underpass bridge provided by the invention
Include the following steps carried out in order：
1) contact net bar basis built-in fitting being made by operating personnel first, it is made up of steel plate and Duo Gen spirals, its
Light plate is horizontally disposed with；The upper end interval of more spirals is welded on the bottom surface of steel plate, then that contact net bar basis is pre-
Embedded part is banded on the steel reinforcement cage of frame bridge main body according to position of the contact net bar on the frame bridge body top face for treating jacking, it
The template of frame bridge main body and the casting concrete in template are installed afterwards, and contact net bar basis built-in fitting is thus embedded in framework
On the top surface of bridge main body, the surface of steel plate 2 flushes with the top surface of frame bridge main body after concrete setting；
2) after the intensity of frame bridge main body meets jacking condition, go slowly and close to the application of railway relevant departments in advance
Point, then the track strengthening system of I-steel beam in length and breadth is added to carry out using 3-5-3 button rails the existing line 11 that is influenceed by jacking
Reinforce, during reinforcing, one is chosen near each existing contact net bar at frame bridge main body to be placed and is used to set contact net
The temporary base seat of bar is put, and ensures other positions that are smaller than of the opening position I-shaped gooseneck in track strengthening system
The spacing of I-shaped gooseneck；
3) after existing line is reinforced, two H profile steels of a temporary base seat will be formed by bolt with interval
Mode is connected on the top surface of I-shaped gooseneck, and contact surface edge uses electric welding, and H profile steel and I-shaped gooseneck are mutual
Vertically；
4) before frame bridge main body jacking, to railway contact line electric power system application power cut construction point, contact is then utilized
Net power failure Points And lines road enclosed point sets contact net bar temporarily, and one piece-root grafting net-fault bar is hung into an interim base first with crane
On plinth seat, and the lower end both sides position of contact net bar is individually placed in two H profile steels, then utilize bolt connection；Treat two
Contact net crossbeam is hung to two piece-root grafting net-fault bar upper ends by contact net bar after setting completed, using two cranes, and is connected using bolt
Connect；Manually the electric power system on existing the contact net bar and contact net crossbeam at frame bridge main body to be placed is changed afterwards and moved to
State on contact net bar and contact net crossbeam, remove existing contact net bar and contact net crossbeam after fixed, restore electricity and
Railroad embankment；
5) jacking jacked frame bridge main body is utilized, after frame bridge main body jacking is in place, reuses contact net power failure
Points And lines road enclosed point, which changes contact net bar and contact net crossbeam, to be moved in frame bridge main body, first with manually by contact net bar and
Electric power system on contact net crossbeam is disassembled, and one piece-root grafting net-fault bar then is hung into said frame bridge main body top using crane
On face on a pre-buried contact net bar basis built-in fitting, and bolt connection is utilized, recycle two cranes by contact net crossbeam
Two piece-root grafting net-fault bar upper ends are hung to, and are connected by screw bolts；Finally using electric power system manually is once again secured in into contact net bar
On contact net crossbeam, restore electricity and railroad embankment.
In step 1), the size of described steel plate is 1.5m × 1.5m × 3cm；Spiral uses 0.8m screw-thread steels
Muscle, totally 28；
In step 3), described bolt uses 22U type bolts；The size of H profile steel be 300mm × 300mm × 10mm ×
10mm。
In step 4) and step 5), described bolt uses 22U type bolts.
The construction method that contact net bar is torn down and reconstructed during Framed underpass bridge provided by the invention can make the contact net for changing shifting
Bar and track strengthening form a firm system, have an easy for construction, laborsaving, less manpower, high efficient construction, simultaneously
It can guarantee that the safe operation of railway in work progress.
Brief description of the drawings
Fig. 1 is contact net bar basis built-in fitting plan in the present invention.
Fig. 2 is contact net bar basis built-in fitting sectional drawing in the present invention.
Fig. 3 is the frame bridge main body top view that contact net bar basis built-in fitting is carried in the present invention.
Fig. 4 is H profile steel in the present invention and I-steel connecting portion floor map.
Fig. 5 is contact net bar interim in the present invention and H profile steel connecting portion sectional drawing.
Fig. 6 is lifting contact net crossbeam schematic diagram in the present invention.
Embodiment
The construction party torn down and reconstructed with reference to specific embodiment to contact net bar during Framed underpass bridge provided by the invention
Method is described in detail.
In certain renewable energy power station town road undercrossing tunnel northwest loop wire K10+841-14m frame bridge engineering, iron
Route road is 4 station tracks, and electrified contacting netses circuit, using jacking constructed frame bridge undercrossing tunnel, frame bridge locates contact be present in place
Net bar, the engineering use method provided by the invention.
The construction method that contact net bar is torn down and reconstructed during Framed underpass bridge provided by the invention includes carrying out down in order
Row step：
1) the contact net bar basis built-in fitting 1 first by operating personnel's making as shown in Figure 1, 2, it is by steel plate 2 and Duo Gen
Spiral 3 is formed, and its light plate 2 is horizontally disposed；The upper end interval of more spirals 3 is welded on the bottom surface of steel plate 2, so
Contact net bar basis built-in fitting 1 is banded in frame according to position of the contact net bar on the top surface of frame bridge main body 10 for treating jacking afterwards
On the steel reinforcement cage of bridge formation main body 10, the template of frame bridge main body 10 and the casting concrete in template are installed afterwards, thus will be connect
Net-fault bar basis built-in fitting 1 is embedded on the top surface of frame bridge main body 10, the surface of steel plate 2 and frame bridge after concrete setting
The top surface of main body 10 flushes, as shown in Figure 3；The size of described steel plate 2 is 1.5m × 1.5m × 3cm；Spiral 3 uses
0.8m spirals, totally 28；
2) after the intensity of frame bridge main body 10 meets jacking condition, go slowly and close to the application of railway relevant departments in advance
Point, then the track strengthening system of I-steel beam in length and breadth is added to carry out using 3-5-3 button rails the existing line 11 that is influenceed by jacking
Reinforce, during reinforcing, one is chosen near each existing contact net bar at frame bridge main body 10 to be placed and is used to set contact
The temporary base seat of net bar 7 is put, and ensure the opening position I-shaped gooseneck 4 in track strengthening system is smaller than other portions
The spacing of the I-shaped gooseneck 4 of position；
3) after existing line 11 is reinforced, will form two H profile steels 5 of a temporary base seat by bolt 6 with
Every mode be connected on the top surface of I-shaped gooseneck 4, contact surface edge uses electric welding, and H profile steel 5 and I-steel are horizontal
Beam 4 is mutually perpendicular to, as shown in Figure 4；Described bolt 6 uses 22U type bolts；The size of H profile steel 5 be 300mm × 300mm ×
10mm×10mm；
4) before the jacking of frame bridge main body 10, to railway contact line electric power system application power cut construction point, then such as Fig. 5,6
It is shown that using contact net power failure Points And lines roads enclosed point, contact net bar 7 is set temporarily, first with crane 8 by a piece-root grafting net-fault bar
7 are hung on a temporary base seat, and the lower end both sides position of contact net bar 7 is individually placed in two H profile steels 5, Ran Houli
It is connected with；Treat two piece-root grafting net-fault bars 7 after setting completed, contact net crossbeam 9 is hung into two piece-root graftings using two cranes 8 touches net
The upper end of bar 7, and be connected by screw bolts；It is manually that existing the contact net bar and contact net at frame bridge main body 10 to be placed is horizontal afterwards
Electric power system on beam, which changes, to be moved on above-mentioned contact net bar 7 and contact net crossbeam 9, by existing contact net bar and is connect after fixed
Net-fault crossbeam is removed, and is restored electricity and railroad embankment；Described bolt uses 22U type bolts.
5) jacking jacked frame bridge main body 10 is utilized, after the jacking of frame bridge main body 10 is in place, reuses contact net
Power failure Points And lines road enclosed point, which changes contact net bar 7 and contact net crossbeam 9, to be moved in frame bridge main body 10, first with will manually connect
Electric power system on net-fault bar 7 and contact net crossbeam 9 disassembles, and is then hung to a piece-root grafting net-fault bar 7 using crane 8 above-mentioned
On the top surface of frame bridge main body 10 on a pre-buried contact net bar basis built-in fitting 1, and bolt connection is utilized, recycle two and hang
Contact net crossbeam 9 is hung to the upper end of two piece-root grafting net-fault bar 7 by car 8, and is connected by screw bolts；Finally using manually by electric power system again
It is secondary to be fixed on contact net bar 7 and contact net crossbeam 9, restore electricity and railroad embankment.Described bolt uses 22U type bolts.
Claims (4)
- A kind of 1. construction method that contact net bar is torn down and reconstructed during Framed underpass bridge, it is characterised in that：Described construction method bag Include the following steps carried out in order：1) contact net bar basis built-in fitting (1) is made by operating personnel first, it is by steel plate (2) and more spiral (3) structures Into its light plate (2) is horizontally disposed；The upper end interval of more spirals (3) is welded on the bottom surface of steel plate (2), then will Contact net bar basis built-in fitting (1) is banded in frame according to position of the contact net bar on frame bridge main body (10) top surface for treating jacking On the steel reinforcement cage of bridge formation main body (10), the template of frame bridge main body (10) and the casting concrete in template are installed afterwards, thus Contact net bar basis built-in fitting (1) is embedded on the top surface of frame bridge main body (10), the table of steel plate (2) after concrete setting Face flushes with the top surface of frame bridge main body (10)；2) after the intensity of frame bridge main body (10) meets jacking condition, go slowly and close to the application of railway relevant departments in advance Point, then the track strengthening system of I-steel beam in length and breadth is added to enter using 3-5-3 button rails the existing line (11) that is influenceed by jacking Row is reinforced, and during reinforcing, each existing contact net bar at frame bridge main body (10) place to be placed nearby chooses one and is used to set The temporary base seat of contact net bar (7) is put, and ensures that the spacing of the opening position I-shaped gooseneck (4) in track strengthening system is small In the spacing of the I-shaped gooseneck (4) at other positions；3) after existing line (11) is reinforced, will form two H profile steels (5) of a temporary base seat by bolt (6) with The mode at interval is connected on the top surface of I-shaped gooseneck (4), and contact surface edge uses electric welding, and H profile steel (5) and work Word gooseneck (4) is mutually perpendicular to；4) before frame bridge main body (10) jacking, to railway contact line electric power system application power cut construction point, contact is then utilized Net power failure Points And lines road enclosed point sets contact net bar (7) temporarily, is hung to a piece-root grafting net-fault bar (7) first with crane (8) On one temporary base seat, and the lower end both sides position of contact net bar (7) is individually placed on two H profile steels (5), then utilize Bolt connection；Treat two piece-root grafting net-fault bars (7) after setting completed, contact net crossbeam (9) is hung to two piece-root graftings using two cranes (8) Net-fault bar (7) upper end, and be connected by screw bolts；Afterwards manually by the existing contact net bar at frame bridge main body (10) place to be placed and Electric power system on contact net crossbeam, which changes, to be moved on above-mentioned contact net bar (7) and contact net crossbeam (9), will be existing after fixed Contact net bar and contact net crossbeam are removed, and are restored electricity and railroad embankment；5) jacking jacked frame bridge main body (10) is utilized, after frame bridge main body (10) jacking is in place, reuses contact net Power failure Points And lines road enclosed point, which changes contact net bar (7) and contact net crossbeam (9), to be moved in frame bridge main body (10), first with people Work disassembles the electric power system on contact net bar (7) and contact net crossbeam (9), is then touched a piece-root grafting using crane (8) Net bar (7) is hung on a contact net bar basis built-in fitting (1) pre-buried on said frame bridge main body (10) top surface, and utilizes spiral shell Tether and connect, recycle two cranes (8) that contact net crossbeam (9) is hung into two piece-root grafting net-fault bar (7) upper ends, and connect using bolt Connect；Finally using manually electric power system is once again secured on contact net bar (7) and contact net crossbeam (9), restore electricity and line Run on road.
- 2. the construction method that contact net bar is torn down and reconstructed during Framed underpass bridge according to claim 1, it is characterised in that： In step 1), the size of described steel plate (2) is 1.5m × 1.5m × 3cm；Spiral (3) uses 0.8m spirals, altogether 28.
- 3. the construction method that contact net bar is torn down and reconstructed during Framed underpass bridge according to claim 1, it is characterised in that： In step 3), described bolt (6) uses 22U type bolts；The size of H profile steel (5) is 300mm × 300mm × 10mm × 10mm.
- 4. the construction method that contact net bar is torn down and reconstructed during Framed underpass bridge according to claim 1, it is characterised in that： In step 4) and step 5), described bolt uses 22U type bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710816999.0A CN107558375B (en) | 2017-09-12 | 2017-09-12 | The construction method that contact net bar is torn down and reconstructed during a kind of Framed underpass bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710816999.0A CN107558375B (en) | 2017-09-12 | 2017-09-12 | The construction method that contact net bar is torn down and reconstructed during a kind of Framed underpass bridge |
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| Publication Number | Publication Date |
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| CN107558375A true CN107558375A (en) | 2018-01-09 |
| CN107558375B CN107558375B (en) | 2018-12-11 |
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| CN201710816999.0A Active CN107558375B (en) | 2017-09-12 | 2017-09-12 | The construction method that contact net bar is torn down and reconstructed during a kind of Framed underpass bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217002A (en) * | 2021-04-09 | 2021-08-06 | 中铁六局集团有限公司 | Construction method for jacking side position of existing line crossing in frame culvert point |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2021919C1 (en) * | 1992-02-03 | 1994-10-30 | Василий Андреевич Брюзгин | Device for coupling registration and steady arms of contact system |
| KR20050055171A (en) * | 2003-12-05 | 2005-06-13 | (주)스틸엔콘크리트 | Composite rigid-frame bridge installing prestressed compound beam to the contral point of the slab of rigid-frame bridge and connecting the beam to the steel member installed in the upper of pole, and construction method thereof |
| CN102758387A (en) * | 2011-04-27 | 2012-10-31 | 中铁六局集团有限公司 | Reinforcing construction method for H-shaped steel line |
| CN103643640A (en) * | 2013-12-19 | 2014-03-19 | 中铁六局集团天津铁路建设有限公司 | Jacking-first and line-reinforcement-second jacking construction method for frame bridge |
| CN106274556A (en) * | 2016-08-05 | 2017-01-04 | 中铁六局集团天津铁路建设有限公司 | A kind of contact net bar changes shifting method |
-
2017
- 2017-09-12 CN CN201710816999.0A patent/CN107558375B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2021919C1 (en) * | 1992-02-03 | 1994-10-30 | Василий Андреевич Брюзгин | Device for coupling registration and steady arms of contact system |
| KR20050055171A (en) * | 2003-12-05 | 2005-06-13 | (주)스틸엔콘크리트 | Composite rigid-frame bridge installing prestressed compound beam to the contral point of the slab of rigid-frame bridge and connecting the beam to the steel member installed in the upper of pole, and construction method thereof |
| CN102758387A (en) * | 2011-04-27 | 2012-10-31 | 中铁六局集团有限公司 | Reinforcing construction method for H-shaped steel line |
| CN103643640A (en) * | 2013-12-19 | 2014-03-19 | 中铁六局集团天津铁路建设有限公司 | Jacking-first and line-reinforcement-second jacking construction method for frame bridge |
| CN106274556A (en) * | 2016-08-05 | 2017-01-04 | 中铁六局集团天津铁路建设有限公司 | A kind of contact net bar changes shifting method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217002A (en) * | 2021-04-09 | 2021-08-06 | 中铁六局集团有限公司 | Construction method for jacking side position of existing line crossing in frame culvert point |
| CN113217002B (en) * | 2021-04-09 | 2024-02-13 | 中铁六局集团有限公司 | Construction method for jacking side positions crossing existing lines in frame culvert points |
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| Publication number | Publication date |
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| CN107558375B (en) | 2018-12-11 |
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