CN102936873B - On across electric railway Construction of continuous beam contact net lines guard system - Google Patents
On across electric railway Construction of continuous beam contact net lines guard system Download PDFInfo
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- CN102936873B CN102936873B CN201210475907.4A CN201210475907A CN102936873B CN 102936873 B CN102936873 B CN 102936873B CN 201210475907 A CN201210475907 A CN 201210475907A CN 102936873 B CN102936873 B CN 102936873B
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Abstract
The invention discloses across electric railway Construction of continuous beam contact net lines guard system in one, it is characterized in that: above existing railway, arrange protecting canopy frame, protecting canopy frame is by two side shelf upright supports top frame longerons; Frame longeron completely spreads billet and the lumps of wood forms cast-in-place door frame, the continuous beam bed die for constructing continuous beam is laid immediately on the lumps of wood; In the stage casing of frame longeron, form parcel with the anti-electrical insulating board of high pressure on the surface of frame longeron i iron, form frame longeron to the anti-electric insulation of contact net high-voltage conducting wires.Protecting canopy frame and cast-in-place door frame merge by the present invention, effectively reduce the shared height of structure, have both served good protective action, and also served cast-in-place supporting role.<!--1-->
Description
Technical field
The present invention relates to and be applied on the support cast-in-place such as newly built railway, speedway continuous beam across guard system in existing electrified railway contact net construction of prevention work.
Background technology
Along with the railway network is more and more intensive, and majority is electric railway, newly built railway, highway etc. need be gone up across electrified railway construction increasing, the design continuous beam that adopts is crossed over more, but some affects by circuit longitudinal gradient, on little across headroom, overpass beam distance existing railway 27KV electrical body OCS Messenger Wire is comparatively near, can not ensure effective safe distance.Current construction this type of across railway cast-in-place continuous beam, conventional construction method is is setting up protecting canopy frame across railway place, works area and circuit are isolated, and then erection is across railway cast-in-place door frame, but this method need take larger headroom, cause protecting canopy frame top longitudinal beam distance OCS Messenger Wire distance not enough, namely distance 27KV high voltage electrical isolation distance is not enough, if the 1m that this insulation distance is less than railway power supply goal will cause carrying out the cast-in-place construction of continuous beam.
Loop wire engineering Economic Development Zone, Hefei railway terminal south grand bridge to detour downlink railway across closing force in DK470+344 place, and intersecting angle is 26
o, be designed to (32+48+32) m continuous beam, adopt the construction of support cast-in-place method.Closing the force downlink railway that detours is electric railway, and current EMUs, design speed per hour is 160km/h, is provided with the OCS Messenger Wire of 27KV high pressure.Affect by circuit longitudinal gradient, at the bottom of continuous beam, distance high-voltage OCS Messenger Wire is only 1.15m, bring extreme difficulties to Construction of continuous beam, also do not have a kind of well for the safety of existing railway high-voltage contact net equipment and the measure of construction operation personnel protection against electric shock in prior art.
Summary of the invention
The present invention is the weak point for avoiding existing for above-mentioned prior art, there is provided in one across electric railway Construction of continuous beam contact net lines guard system, for the safety of existing railway high-voltage contact net equipment and the requirement of construction operation personnel protection against electric shock, in limited space, provide a kind of effective measure, eliminate the high pressure electrical shock safety hazard brought because headroom is not enough.
The present invention is that technical solution problem adopts following technical scheme:
The present invention across the design feature of electric railway Construction of continuous beam contact net lines guard system is:
Above existing railway, protecting canopy frame is set, described protecting canopy frame arranges concrete foundation in the both sides of existing railway, in the concrete foundation of both sides, interval arranges frame column, the top of described frame column is provided with frame crossbeam, shelving longeron between the frame crossbeam on the relative position of both sides; Completely spread billet at the top of frame longeron, lay the lumps of wood at the top of described billet and form cast-in-place door frame, the continuous beam bed die for constructing continuous beam is laid immediately on the described lumps of wood;
Described frame longeron adopts i iron, on the stage casing of described frame longeron, the base plate being positioned at i iron and web, form parcel with the anti-electrical insulating board of high pressure on the surface of i iron, form frame longeron to the anti-electric insulation of contact net high-voltage conducting wires to be coated with the anti-electrical insulating board of high pressure;
Be positioned at described protecting canopy frame place section, on described contact net high-voltage conducting wires and OCS Messenger Wire, carry out insulation sleeve with insulation sleeve.
The present invention is also across the design feature of electric railway Construction of continuous beam contact net lines guard system:
On the frame longeron of described employing i iron, on the top board being positioned at i iron, interval arranges each elevator, and the top of the anti-electrical insulating board of described high pressure is fixedly connected on each elevator by insulated bolt.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, protecting canopy frame and cast-in-place door frame merge by the present invention, effectively reduce the shared height of structure, have both served good protective action, and also served cast-in-place supporting role.
2, the present invention wraps up frame longeron with the anti-electrical insulating board of high pressure, and carries out sheath to OCS Messenger Wire, effectively increases the insulation distance of protecting canopy frame and high-tension electricity, has ensured the safety of existing railway equipment and constructor.
3, structure of the present invention is simple, easy to implement.
Accompanying drawing explanation
Fig. 1 is protecting canopy frame facade structures schematic diagram in the present invention;
Fig. 2 is protecting canopy frame plan structure schematic diagram in the present invention;
Fig. 3 is protecting canopy frame two side shelf column arrangement schematic diagram in the present invention;
Fig. 4 is with the frame longeron schematic cross-sectional view of the anti-electric insulating slab parcel of high pressure in the present invention;
Fig. 5 is with the frame stringer sides TV structure schematic diagram of the anti-electric insulating slab parcel of high pressure in the present invention;
Number in the figure: 1 existing railway; 2 concrete foundations; 3 frame columns; 4 frame crossbeams; 5 frame longerons; 5a billet; The anti-electrical insulating board of 6 high pressure; 7 contact net high-voltage conducting wires; 8 OCS Messenger Wires; 9 elevators; 10 insulated bolts; 11 insulation sleeve.
Detailed description of the invention
See Fig. 1, Fig. 2 and Fig. 3, in the present embodiment across the vibrational power flow of electric railway Construction of continuous beam contact net lines guard system be:
Shown in Fig. 1, Fig. 2 and Fig. 3, above existing railway 1, protecting canopy frame is set, protecting canopy frame arranges concrete foundation 2 in the both sides of existing railway 1, in both sides concrete foundation 2, interval arranges frame column 3, the top of frame column 3 is provided with frame crossbeam 4, shelving longeron 5 between the frame crossbeam 4 on the relative position of both sides; Lay billet 5a at the top of frame longeron 5, lay the lumps of wood at the top of billet 5a and form cast-in-place door frame, the continuous beam bed die for constructing continuous beam is laid immediately on the lumps of wood;
Be positioned at protecting canopy frame place section, on contact net high-voltage conducting wires 7 and OCS Messenger Wire 8, carry out insulation sleeve with insulation sleeve 11.
Shown in Fig. 4 and Fig. 5, frame longeron 5 adopts i iron, on the stage casing of frame longeron 5, the base plate being positioned at i iron and web, parcel is formed on the surface of frame longeron i iron, to be coated with the anti-electric insulation that the anti-electrical insulating board of high pressure 6 forms frame longeron 5 pairs of contact net high-voltage conducting wires 7 with the anti-electrical insulating board 6 of high pressure; On the frame longeron 5 adopting i iron, on the top board being positioned at i iron, interval arranges each elevator 9, and the top of the anti-electrical insulating board of high pressure 6 is fixedly connected on each elevator 9 by insulated bolt 10.
Work progress:
1, installing insulating sleeve pipe;
Contact net equipment to railway interests's application leap place power supply unit has a power failure, and blocks railway, each power failure blockade 2 hours.Have a power failure after blocking, adopt the anti-electric insulation sleeve of 30KV to carry out sheath the OCS Messenger Wire 8 of leap place 50m scope, serve certain insulating effect.
2, shelving;
Across the cast-in-place employing portal-framed structure in railway division, because headroom is less, cast-in-place door frame and protecting canopy frame are shared.Frame adopts and sets up along railway is orthogonal, and concrete foundation adopts pile foundation 2a in conjunction with concrete fin ellbeam 2b, and every side adopts 20 Φ 1.0m hand excavated piles, hole digging pile degree of depth 9m, and pile foundation spacing is 2.5m, as shown in Figure 1.
Concrete fin ellbeam 2b is wide is 1m, height is 0.5m; The bottom of concrete fin ellbeam 2b is every the PVC drain pipe of the pre-buried Φ 100mm of 1m, and for construction period curb draining, the top pre-embedded bolt of concrete fin ellbeam 2b, for being connected with the bottom of frame column 3.
Frame column 3 adopts the steel pipe of Φ 529*10mm, and spacing 2.5m arranges, one-sided 20, adopts the angle steel of ∠ 75 × 75 × 5mm to carry out interconnection between column steel pipe.The column steel pipe top of frame column 3 laterally opens the dark breach of 30cm, and place frame crossbeam 4 in breach, frame crossbeam 4 adopts I45a i iron.Frame longeron 5 is placed at the top of frame crossbeam 4, and frame longeron 5 is long is 9m, horizontal spacing 0.4m, and amount to 114, frame longeron 5 adopts I45a i iron.Distance between the bottom of frame longeron 5 and the OCS Messenger Wire 8 after reducing is 0.6m, the top of frame longeron 5 completely spreads the thick billet of 6mm, and the lumps of wood is laid at the top of billet 5a, and the lumps of wood directly lays continuous beam bed die, carry out Construction of continuous beam above, as shown in Figure 2.
3, the anti-electrical insulating board of installation high-voltage;
Because the distance of the distance from bottom OCS Messenger Wire 8 of frame longeron 5 is only 0.6m, the insulation distance that cannot meet railway power supply goal is not less than the requirement of 1m.Adopt the anti-electrical insulating board 6 of 30KV high pressure to wrap up 114 frame longerons 5, for saving few material, can adopt the form of half parcel, the thickness of the anti-electrical insulating board 6 of high pressure is 1cm, and every block width is 1m, and length is 2m.The base plate of the frame longeron 5 be positioned at directly over OCS Messenger Wire 8 and web wrap up by the anti-electrical insulating board 6 of high pressure, and top elevator 9 is fixedly connected with, as shown in Figure 4 and Figure 5.
The anti-electrical insulating board 6 of high pressure in a pre-installation, the electric conductor that distance OCS Messenger Wire 8 is nearest and frame longeron are 0.6m, and after the anti-electrical insulating board 6 of high pressure is installed, this distance increases to 1m, meet the requirement of railway power supply department, also greatly reduce constructor and to get an electric shock risk.
Claims (1)
1. go up across electric railway Construction of continuous beam contact net lines guard system, it is characterized in that:
In the top of existing railway (1), protecting canopy frame is set, described protecting canopy frame arranges concrete foundation (2) in the both sides of existing railway (1), at both sides concrete foundation (2) upper interval, frame column (3) is set, the top of described frame column (3) is provided with frame crossbeam (4), shelving longeron (5) between the frame crossbeam (4) on the relative position of both sides; Completely spread billet (5a) at the top of described frame longeron (5), lay the lumps of wood at the top of described billet (5a) and form cast-in-place door frame, the continuous beam bed die for constructing continuous beam is laid immediately on the described lumps of wood;
Described frame longeron (5) adopts i iron, on the stage casing of described frame longeron (5), the base plate being positioned at frame longeron i iron and web, form parcel with the anti-electrical insulating board of high pressure (6) on the surface of i iron, form frame longeron (5) to the anti-electric insulation of contact net high-voltage conducting wires (7) to be coated with the anti-electrical insulating board of high pressure (6);
Be positioned at described protecting canopy frame place section, on described contact net high-voltage conducting wires (7) and OCS Messenger Wire (8), carry out insulation sleeve with insulation sleeve (11);
On the frame longeron (5) of described employing i iron, on the top board being positioned at frame longeron i iron, interval arranges each elevator (9), and the top of the anti-electrical insulating board of described high pressure (6) is fixedly connected on each elevator (9) by insulated bolt (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210475907.4A CN102936873B (en) | 2012-11-21 | 2012-11-21 | On across electric railway Construction of continuous beam contact net lines guard system |
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| CN201210475907.4A CN102936873B (en) | 2012-11-21 | 2012-11-21 | On across electric railway Construction of continuous beam contact net lines guard system |
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| CN102936873A CN102936873A (en) | 2013-02-20 |
| CN102936873B true CN102936873B (en) | 2015-10-28 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105350446B (en) * | 2015-11-11 | 2017-02-01 | 中铁大桥局武汉桥梁特种技术有限公司 | Combined highway and railway bridge isolation shed frame and mounting method of wedge-shaped liners |
| CN106702905B (en) * | 2016-11-30 | 2018-07-27 | 中铁十六局集团第三工程有限公司 | A kind of suspension type protection frame construction method |
| CN109594485A (en) * | 2019-01-21 | 2019-04-09 | 中铁四局集团第二工程有限公司 | A kind of anti-high slope falling rocks componentization protecting canopy frame structure of highway and its construction method |
| CN110145159B (en) * | 2019-06-25 | 2024-02-27 | 中铁八局集团电务工程有限公司 | Welding connection contact net hard cross beam and construction method thereof |
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