CN107806009A - A kind of across the Existing Railway Line contact net protection canopy of highway and its construction method - Google Patents
A kind of across the Existing Railway Line contact net protection canopy of highway and its construction method Download PDFInfo
- Publication number
- CN107806009A CN107806009A CN201711021234.4A CN201711021234A CN107806009A CN 107806009 A CN107806009 A CN 107806009A CN 201711021234 A CN201711021234 A CN 201711021234A CN 107806009 A CN107806009 A CN 107806009A
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- Prior art keywords
- layer
- contact net
- protection canopy
- line contact
- railway line
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
Abstract
The invention discloses a kind of across the Existing Railway Line contact net protection canopy of highway and its construction method, including hanging steel bracket, supporting course, waterproof layer, fireprotection layer and anti-electric layer, hanging steel bracket upper end is fixedly connected on beam slab reserved steel bar, lower end is fixedly connected with supporting course, anti- electric layer is set on the downside of supporting course, and upside sets waterproof layer and fireprotection layer from top to bottom；The present invention and the Window time parallel construction set a roof beam in place, it is small to railways train operation interference, and coordinate without large scale equipment, it is simple to operate, it is safe and efficient, labour cost and related measure expense are relatively low, by setting supporting course, convenient operation construction and fall arrest, anti- electric layer is set, avoid contact dangerous, waterproof layer and fireprotection layer are set, play waterproof and fire prevention.
Description
Technical field
The invention belongs to equipment for bridge construction technical field, and in particular to a kind of across Existing Railway Line contact net of highway
Protection canopy and its construction method.
Background technology
With the development of national communication cause, highway and railway are more and more, cross one another unavoidable, and particularly one
A little crosspoints, the beam bottom after highway roof beam structure is complete is nearer from railway contact line, or even apart less than 1.5 meters, along with the electricity opened
Gasification railway requires that induced electricity caused by high-tension electricity that is water-tight, not falling thing and avoid contact with 2.75 ten thousand volts of net is hurted sb.'s feelings, and is closing on
The overhead of contact net carries out the construction of reinforcement welding and cast-in-place concrete, what security protection was strict.
Conventional safety form is mostly to set up steel structure protection canopy on railway, traditional steel structure protection canopy from design, prove to reality
Construction needs the plenty of time, and needs great deal of steel and machine appliance device coordinative construction, work progress potential safety hazard also to compare
Greatly, fund is put into huge with the time；Traditional steel structure protection canopy needs have a power failure block circuit progress steel-column foundation excavation, prefabricated, steel
Post group is vertical, frame is set up, removed, and skylight maintenance time requires long, the very more completions that could construct of skylight construction point,
Interference on the road is quite big.
The content of the invention
Present invention solves the technical problem that it is：There is provided a kind of highway across Existing Railway Line contact net protection canopy, with solution
Certainly above-mentioned problems of the prior art.
The technical scheme that the present invention takes is：A kind of across Existing Railway Line contact net protection canopy of highway, including hanging
Steel bracket, supporting course, waterproof layer, fireprotection layer and anti-electric layer, hanging steel bracket upper end are fixedly connected on beam slab reserved steel bar, lower end
Supporting course is fixedly connected with, anti-electric layer is set on the downside of supporting course, upside sets waterproof layer and fireprotection layer from top to bottom.
Above-mentioned hanging steel bracket includes symmetrical more suspension rods, sleeve and angle steel, and sleeve is fixedly connected on connection steel
On muscle, connection reinforcing bar is fixedly connected on the wet seam reserving rib of prefabricated box beam, and suspension rod upper end is fixedly connected on sleeve, under
End is fixedly connected with sole bar angle, the suspension rod of the left and right sides（3）The angle steel same level face of connection forms supporting surface.
Above-mentioned supporting course is made using the plank completely spread, and its lower solid wood side of placing supports, and solid wood side both ends snap into left and right
Angle steel on.
Waterproof handwoven cloth and asbestos flameproof fabric is respectively adopted in above-mentioned waterproof layer and fireprotection layer.
Above-mentioned anti-electric layer uses epoxy resins insulation plate, using on iron wire suspension angle cleat.
Above-mentioned anti-electric layer upper side is provided with the aluminium alloy conduit of two transverse directions, its downside leakage metal it is exhausted with high pressure
Edge glue makes insulating barrier, and two conduits are fixed on conduit on all-insulated plate with rivet, and conduit both ends are provided with angle bar.
A kind of across Existing Railway Line contact net protection canopy construction method of highway, this method comprise the following steps：
（1）Beam slab welds hanging steel bracket before setting up on beam slab reserved steel bar；
（2）Hanging steel bracket is closing on the anti-electric layer of contact net overhung epoxy resins insulation plate after setting up；
（3）It is transversely lapped at solid wood side on hanging steel bracket, the full boardings of solid wood Fang Shangzai are as supporting course；
（4）The waterproof layer of waterproof geotextiles and the fireprotection layer of fireproof asbestos cloth are completely spread on supporting course；
（5）Protection canopy dismounting is carried out after the completion of wet seam pours between beam slab.
Above-mentioned steps（1）In, linked together with the reserved steel bar two-sided welding of the connection reinforcing bars of φ 20 and beam slab, weld seam length
Degree >=15cm, with the sleeve two-sided welding with nut at connection reinforcing bar, the length sleeve with nut is not less than 12cm, by φ 25
Pull bar upper end be connected at the sleeve with nut, L80*80*8*1500 angle steel is fixed with high-strength nut in pull bar lower end；Angle
Steel length is installed by every 1500mm, and line end is crimped with ￠ 4 annealed copper strand wire both ends between the angle steel and angle steel of a piece of beam slab
Son connection, and ground connection is concentrated, grounding resistance cannot be greater than 30 ohm.
Above-mentioned steps（2）In, epoxy resins insulation plate thickness >=12mm of anti-electric layer use, all-insulated plate one side installation two
Aluminium alloy conduit, conduit is fixed on all-insulated plate with rivet, conduit both ends are provided with angle bar, and all-insulated plate another side high pressure is exhausted
Leakage metal is done insulation processing by edge glue, and anti-electric layer is hanging on angle steel by angle bar by iron wire.
Above-mentioned steps（4）In, waterproof geotextiles mass area ratio >=400g/m of waterproof layer2, thickness >=4mm, fracture
Intensity >=12.5kn, CBR bursting strengths >=2.1kn, tearing resistance >=0.33kn；Fireproof asbestos cloth thickness >=3mm, antiradiation heat
>=90%, radiation hardness heat >=1000 DEG C.
Beneficial effects of the present invention：Compared with prior art, the present invention and the Window time parallel construction set a roof beam in place, to railway
Driving interference is small, and coordinates without large scale equipment, and simple to operate, safe and efficient, labour cost and related measure expense are relatively low, leads to
Setting supporting course, convenient operation construction and fall arrest are crossed, anti-electric layer is set, avoids contact dangerous, waterproof layer and fireprotection layer is set,
Play waterproof and fire prevention.
Brief description of the drawings
Fig. 1 the structural representation of present invention；
The construction flow chart of Fig. 2 present invention.
Embodiment
Below in conjunction with the accompanying drawings and the present invention is described further specific embodiment.
Embodiment 1：As shown in Fig. 1-Fig. 2, a kind of across Existing Railway Line contact net protection canopy of highway, including hanging
Steel bracket 13, supporting course 6, waterproof layer 5, fireprotection layer 4 and anti-electric layer 7, hanging steel bracket 13 upper end are fixedly connected on beam slab and reserved
Reinforcing bar, lower end are fixedly connected with supporting course 6, and the downside of supporting course 6 sets anti-electric layer 7, and upside sets waterproof layer 5 and fire prevention from top to bottom
Layer 4.
Above-mentioned hanging steel bracket 13 includes symmetrical more suspension rods 3, sleeve 1 and angle steel 9, and sleeve 1 is fixedly connected on
Connect on reinforcing bar 2, connection reinforcing bar is fixedly connected on the wet seam reserving rib of prefabricated box beam, and the upper end of suspension rod 3 is fixedly connected on
On sleeve 1, lower end is fixedly connected with sole bar angle 9, and the same level face of angle steel 9 that the suspension rod 3 of the left and right sides connects forms supporting surface, is
Suspension rod 3 is easily installed and removes, its spacing is 1 meter, and the length of angle steel 9 is installed by every 1500mm.
Above-mentioned supporting course 6 is made using the 25mm solid woods completely spread, and its lower placement solid wood side 8 supports, and plank is consolidated with nail
It is scheduled on flitch 8, the both ends of solid wood side 8 are snapped on the angle steel 9 of left and right and fixed using screw or bolt, and the section of solid wood side 8 is
100mm*100mm, adjacent 8 spacing in solid wood side are 1 meter, lay crossbeam as protection canopy.
Waterproof handwoven cloth is respectively adopted for above-mentioned waterproof layer 5 and fireprotection layer 4 and asbestos flameproof fabric is paved with plank, waterproof geotextiles
It is not less than 10 centimetres with the length that asbestos cloth mutually overlaps.
Above-mentioned anti-electric layer 7 uses epoxy resins insulation plate, anti-electric, is hung using iron wire on angle cleat 9 or suspension rod 3, prevents
The upper side of electric layer 7 is provided with the aluminium alloy conduit 11 of two transverse directions, and being made of high-voltage isulation glue for its downside leakage metal is exhausted
Edge layer, two conduits 11 are fixed on conduit 11 on all-insulated plate 7 with rivet, and the both ends of conduit 11 are provided with angle bar 10, on angle bar 10
It is reserved with the hole of connection iron wire.
A kind of across Existing Railway Line contact net protection canopy construction method of highway, this method comprise the following steps：
（1）Beam slab welds hanging steel bracket 13 before setting up on beam slab reserved steel bar；
（2）Hanging steel bracket 13 is closing on the anti-electric layer 7 of contact net overhung epoxy resins insulation plate after setting up；
（3）It is transversely lapped at solid wood side 8 on hanging steel bracket 13, expires boarding in solid wood side 8 again as supporting course 6；
（4）The waterproof layer 5 of waterproof geotextiles and the fireprotection layer 4 of fireproof asbestos cloth are completely spread on supporting course 6；
（5）Protection canopy dismounting is carried out after the completion of wet seam pours between beam slab.
Above-mentioned steps（1）In, linked together with the reserved steel bar two-sided welding of the connection reinforcing bars 2 of φ 20 and beam slab, weld seam
Length >=15cm, with the two-sided welding of sleeve 1 with nut at connection reinforcing bar 2, the length of sleeve 1 with nut is not less than 12cm,
φ 25 upper end of pull bar 3 is connected at the sleeve 1 with nut, the lower end high-strength nut of pull bar 3 is by L80*80*8*1500 angle
Steel 9 is fixed；The length of angle steel 9 is installed by every 1500mm, with the annealed copper strand wire that ￠ 4 is used between the angle steel 9 and angle steel 9 of a piece of beam slab
Both ends crimping line terminals connection, and ground connection is concentrated, grounding resistance cannot be greater than 30 ohm, to prevent induced electricity from injuring, steel bracket
Bearing test should be done after installation to ensure the safety with enough bearing capacity support personnel operations on support.
Above-mentioned steps（2）In, epoxy resins insulation plate thickness >=12mm of the anti-use of electric layer 7, all-insulated plate 7 simultaneously installs two
Bar aluminium alloy conduit 11, conduit 11 is fixed on all-insulated plate 7 with rivet, the both ends of conduit 11 are provided with angle bar 10, and all-insulated plate 7 is another
Leakage metal is simultaneously done insulation processing with high-voltage isulation glue, anti-electric layer 7 is hanging on angle steel 9 by angle bar 10 by iron wire 12,
Worker should wear on-slip shoes, be concerned about safety belt operation, and this process powers off in Window time and contact net, could be operated.
Above-mentioned steps（4）In, waterproof geotextiles mass area ratio >=400g/m of waterproof layer 52, thickness >=4mm, fracture
Intensity >=12.5kn, CBR bursting strengths >=2.1kn, tearing resistance >=0.33kn；4 thickness of fireproof asbestos cloth >=3mm, antiradiation
Heat >=90%, radiation hardness heat >=1000 DEG C.
Step（5）In, utilize the preformed hole of the wet joint template installation of bridge floor connection（Wet each 400 milli of seam longitudinal center
One, rice）, safety belt fixed mount is installed on each preformed hole, safety belt is even hung over safety belt fixed mount by work high above the ground personnel
On, it is ensured that the safety of work high above the ground personnel.Waterproof cloth and fireproof asbestos cloth are first removed in the case of the block that do not have a power failure, it is rear to utilize
Power failure Window time is started progressively to remove plank, anti-electric layer 7 and angle bar frame toward on the outside of contact net from wire center.
The preformed hole that wet joint template installation is connected using bridge floor installs safety belt fixed mount, high-altitude on each preformed hole
Operating personnel even hangs over safety belt on safety belt fixed mount, it is ensured that the safety of work high above the ground personnel.First in the block that do not have a power failure
In the case of remove waterproof cloth and fireproof asbestos cloth, started afterwards using power failure Window time from wire center toward contact net outside progressively
Remove plank, all-insulated plate and angle bar frame.
The foregoing is only a specific embodiment of the invention example, protection scope of the present invention are not limited thereto.It is ripe
Know the those skilled in the art the invention discloses technical scope in, change or replacement mode can be easily found, these
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of the claim
Enclose and be defined.
Claims (10)
- A kind of 1. across Existing Railway Line contact net protection canopy of highway, it is characterised in that：Including hanging steel bracket（13）, load-bearing Layer（6）, waterproof layer（5）, fireprotection layer（4）With anti-electric layer（7）, hang steel bracket（13）Upper end is fixedly connected on beam slab and reserves steel Muscle, lower end are fixedly connected with supporting course（6）, supporting course（6）Downside sets anti-electric layer（7）, upside sets waterproof layer from top to bottom（5） And fireprotection layer（4）.
- A kind of 2. across the Existing Railway Line contact net protection canopy of highway according to claim 1, it is characterised in that：Hanging Steel bracket（13）Including symmetrical more suspension rods（3）, sleeve（1）And angle steel（9）, sleeve（1）It is fixedly connected on connection steel Muscle（2）On, connection reinforcing bar is fixedly connected on the wet seam reserving rib of prefabricated box beam, suspension rod（3）Upper end is fixedly connected on set Cylinder（1）On, lower end is fixedly connected with sole bar angle（9）, the suspension rod of the left and right sides（3）The angle steel of connection（9）Same level face forms branch Support face.
- A kind of 3. across the Existing Railway Line contact net protection canopy of highway according to claim 1, it is characterised in that：Load-bearing Layer（6）Made using the plank of full paving, its lower placement solid wood side（8）Support, solid wood side（8）Both ends snap into the angle steel of left and right （9）On.
- A kind of 4. across the Existing Railway Line contact net protection canopy of highway according to claim 1, it is characterised in that：Waterproof Layer（5）And fireprotection layer（4）Waterproof handwoven cloth and asbestos flameproof fabric is respectively adopted.
- A kind of 5. across the Existing Railway Line contact net protection canopy of highway according to claim 1, it is characterised in that：It is anti-electric Layer（7）Using epoxy resins insulation plate, angle cleat is hung using iron wire（9）On.
- A kind of 6. across the Existing Railway Line contact net protection canopy of highway according to claim 5, it is characterised in that：It is anti-electric Layer（7）Upper side is provided with the aluminium alloy conduit of two transverse directions（11）, the use high-voltage isulation glue making of its downside leakage metal Insulating barrier, two conduits（11）With rivet conduit（11）It is fixed on all-insulated plate（7）On, conduit（11）Both ends are provided with angle bar （10）.
- 7. according to a kind of any described across the Existing Railway Line contact net protection canopy construction methods of highway of claim 1-6, It is characterized in that：This method comprises the following steps：（1）Beam slab welds hanging steel bracket before setting up on beam slab reserved steel bar（13）；（2）Hang steel bracket（13）The anti-electric layer of contact net overhung epoxy resins insulation plate is being closed on after erection（7）；（3）With solid wood side（8）It is transversely lapped at hanging steel bracket（13）On, solid wood side（8）On again expire boarding as supporting course（6）；（4）In supporting course（6）On completely spread the waterproof layers of waterproof geotextiles（5）With the fireprotection layer of fireproof asbestos cloth（4）；（5）Protection canopy dismounting is carried out after the completion of wet seam pours between beam slab.
- 8. across the Existing Railway Line contact net protection canopy construction method of a kind of highway according to claim 7, its feature It is：Step（1）In, with the connection reinforcing bars of φ 20（2）Linked together with the reserved steel bar two-sided welding of beam slab, fusion length >= 15cm, with the sleeve with nut（1）Two-sided welding is in connection reinforcing bar（2）Place, the sleeve with nut（1）Length is not less than 12cm, By φ 25 pull bar（3）Upper end is connected to the sleeve with nut（1）Place, pull bar（3）Lower end high-strength nut is by L80*80*8* 1500 angle steel（9）It is fixed；Angle steel（9）Length is installed by every 1500mm, with the angle steel of a piece of beam slab（9）With angle steel（9）It Between connected with ￠ 4 annealed copper strand wire both ends crimping line terminals, and concentrate ground connection, grounding resistance cannot be greater than 30 ohm.
- 9. across the Existing Railway Line contact net protection canopy construction method of a kind of highway according to claim 7, its feature It is：Step（2）In, anti-electric layer（7）Epoxy resins insulation plate thickness >=12mm of use, all-insulated plate（7）Simultaneously install two Aluminium alloy conduit（11）, with rivet conduit（11）It is fixed on all-insulated plate（7）On, conduit（11）Both ends are provided with angle bar（10）, All-insulated plate（7）Leakage metal is done insulation processing, angle bar by another side with high-voltage isulation glue（10）Pass through iron wire（12）By anti-electric layer （7）It is hanging to angle steel（9）On.
- 10. across the Existing Railway Line contact net protection canopy construction method of a kind of highway according to claim 7, its feature It is：Step（4）In, waterproof layer（5）Waterproof geotextiles mass area ratio >=400g/m2, thickness >=4mm, fracture strength >=12.5kn, CBR bursting strength >=2.1kn, tearing resistance >=0.33kn；Fireproof asbestos cloth（4）Thickness >=3mm, antiradiation heat >=90%, radiation hardness heat >=1000 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711021234.4A CN107806009A (en) | 2017-10-27 | 2017-10-27 | A kind of across the Existing Railway Line contact net protection canopy of highway and its construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711021234.4A CN107806009A (en) | 2017-10-27 | 2017-10-27 | A kind of across the Existing Railway Line contact net protection canopy of highway and its construction method |
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| CN107806009A true CN107806009A (en) | 2018-03-16 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277994A (en) * | 2018-03-20 | 2018-07-13 | 中铁三局集团有限公司 | On across the high ferro safe guarding shed quick method for dismounting of operation line |
| CN108824826A (en) * | 2018-08-15 | 2018-11-16 | 中铁六局集团广州工程有限公司 | Across railway protective canopy, across railway box beam bridge and the construction method across railway protective canopy |
| CN111455854A (en) * | 2020-04-14 | 2020-07-28 | 浙江大学宁波理工学院 | Semi-automatic protective shed frame used in construction of viaduct crossing railway and erection method |
| CN113005900A (en) * | 2019-12-20 | 2021-06-22 | 中交第一航务工程局有限公司 | Inverted protection shed and mounting and dismounting method thereof |
| CN114687300A (en) * | 2022-04-08 | 2022-07-01 | 中铁大桥局集团有限公司 | Maintenance method and maintenance system for box girder above transformer |
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| CN207659843U (en) * | 2017-10-27 | 2018-07-27 | 中铁五局集团有限公司 | A kind of across Existing Railway Line contact net protection canopy of highway |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277994A (en) * | 2018-03-20 | 2018-07-13 | 中铁三局集团有限公司 | On across the high ferro safe guarding shed quick method for dismounting of operation line |
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| CN113005900A (en) * | 2019-12-20 | 2021-06-22 | 中交第一航务工程局有限公司 | Inverted protection shed and mounting and dismounting method thereof |
| CN111455854A (en) * | 2020-04-14 | 2020-07-28 | 浙江大学宁波理工学院 | Semi-automatic protective shed frame used in construction of viaduct crossing railway and erection method |
| CN111455854B (en) * | 2020-04-14 | 2021-08-03 | 浙江大学宁波理工学院 | Semi-automatic protective shed frame used in construction of viaduct crossing railway and erection method |
| CN114687300A (en) * | 2022-04-08 | 2022-07-01 | 中铁大桥局集团有限公司 | Maintenance method and maintenance system for box girder above transformer |
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