CN201660851U - Supporting point conversion beam for jacking large-span skew frame - Google Patents
Supporting point conversion beam for jacking large-span skew frame Download PDFInfo
- Publication number
- CN201660851U CN201660851U CN2010201077169U CN201020107716U CN201660851U CN 201660851 U CN201660851 U CN 201660851U CN 2010201077169 U CN2010201077169 U CN 2010201077169U CN 201020107716 U CN201020107716 U CN 201020107716U CN 201660851 U CN201660851 U CN 201660851U
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- Prior art keywords
- jacking
- conversion beam
- span
- slide block
- framework
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 claims description 5
- 238000005461 lubrication Methods 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- -1 polyethylene Polymers 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000009412 basement excavation Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 12
- 230000009466 transformation Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 241000272165 Charadriidae Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000036244 malformation Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
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Abstract
The utility model provides a supporting point conversion beam for jacking a large-span skew frame, which is characterized in that I-shaped steel pre-embedded on a frame top plate serves as a supporting beam (3), a steel pipe support (2) is added on the cantilevered end of the supporting beam; a slide ways (4), a lower slide plate (5), a jacking slider (6) and an upper slide plate (7) are sequentially paved on the supporting beam (3); one end of a D-type auxiliary girder (8) is arranged on the upper slide plate (7), and the other section thereof is arranged on an excavation pile buttress (1); and a rail (9) is arranged on the D-type auxiliary girder (8). The supporting point conversion beam has the advantages of good state and smaller deflection, ensures the safe and stable running of a train when the frame is jacked in, and solves the technical difficult problems of large-space skew frame overhead jacking.
Description
Technical field
The utility model belongs to the construction of railways technical field, is specifically related to a kind of fulcrum conversion equipment that is used for jacking Large-span Oblique-crossing framework.
Background technology
For on existing railway, carrying out large span, oblique framework jacking construction, because its single-unit framework is heavy, the top journey is long, adds framework and be positioned on the circular curve, adopt the merogenesis broken line to arrange, its direction and level control are very difficult, and difficulty of construction is big, the technological requirement height.
The former B8748 that is useful on Oblique-crossing Frame frame jacking construction just beam has not had manufacturer production, and market is difficult to obtain at home, and this overlaps just that beam weighs 68 tons, and its transportation and installation cost are very high, so must use other economy, feasible method instead for this type of construction.
Be directed to the concrete condition of the built on stilts jacking of its large span, oblique framework, can only adopt multispan D type just beam fulcrum transformation approach construct.Promptly adopt multispan D type just beam replace just roof beam structure ceases to be busy road of B8748, during the framework jacking, utilize the fulcrum transformation approach with the D type just the stressed fulcrum on the beam progressively be transformed on the fulcrum conversion beam from the hole digging pile buttress, abolish the hole digging pile buttress in the middle of the main span then, the framework jacking is in place.And the fulcrum conversion beam becomes the key of fulcrum transformation approach construction, must satisfy simultaneously stressed big, distortion is little, structure, easy to operate, reduce the jacking resistance, prevent the complicated requirement of multinomial mutual restriction such as circuit displacement.
Summary of the invention
The purpose of this utility model be to provide a kind of stressed big, distortion less, easy to operate fulcrum conversion beam, be used for jacking Large-span Oblique-crossing framework usefulness, can effectively reduce the jacking resistance, prevent the circuit displacement.
The utility model is achieved through the following technical solutions:
For increasing conversion beam self rigidity, adopt 6 I45C i iron that are embedded on the frame head plate as brace summer, to reduce amount of deflection; The force structure of fulcrum conversion beam for a change, the steel pipe that adds 3 external diameter 40cm, wall thickness 8mm at its cantilever end supports, and it is as a whole to adopt i iron that brace summer is welded into simultaneously, thereby increases structural bearing capacity greatly, reduce malformation, guarantee to drive a vehicle steadily; On brace summer, lay slideway and lower skateboard respectively, lay slide block on the lower skateboard, just install upper slide under the beam in the D type at last.
According to the specific requirement of site operation to slide block, adopt polyethylene tetrafluoro plate as the jacking slide block, this material mainly as the bearing plate in the pot rubber bearing, has very strong bearing capacity, and its contact surface has less coefficient of friction, can effectively reduce the jacking resistance.Polyethylene tetrafluoro plate is made into the slide block that physical dimension is 20cm * 25cm * 2.5cm, strengthens inspection during making, for damaging or being out of shape bigger slide block and in time changing to the slide block quality.Before slide block is installed, on its slide plane, be coated with last layer quality lubrication oil preferably equably earlier, further to reduce the jacking resistance.
Lower skateboard adopts the thick iron plate of corrosion resistant plate parcel δ=20mm of δ=5mm to make, in case the limited slip plate distortion, its apparent size is 300cm * 50cm * 3cm.On corrosion resistant plate, be coated with last layer lubrication oil during installation equably, to reduce the jacking resistance; When slide block is installed, it is gathered one by one on lower skateboard, when the fulcrum conversion beam passes the D type just during beam, the slide block that front end has been shifted out relays in the slide plate back, and it is reused, and to improve the utilization rate of slide block, makes things convenient for the jacking construction operation.
When train by the time, take just to add the method for temporary rest pier in the beam lower end in the D type, the state of circuit satisfies the requirement of driving when guaranteeing jacking construction, prevents the circuit displacement.
Advantage of the present utility model is:
1, fulcrum conversion beam stress of the present utility model is good, and amount of deflection is less, has guaranteed the safe, steady of train travel during the framework jacking, and large span, the built on stilts jacking technology difficult problem of oblique framework are also effectively solved.
2, the slide block that adopted of fulcrum conversion beam is respond well, has both guaranteed carrying out smoothly of framework jacking, has also improved the slide block utilization rate, has saved cost of production, has obtained favorable economic benefit.
Description of drawings
Fig. 1: the utility model structural representation
1, hole digging pile buttress; 2, steel pipe supports; 3, brace summer; 4, slideway; 5, lower skateboard; 6, jacking slide block; 7, upper slide; 8, just beam of D type; 9, rail
The specific embodiment
Below be preferred embodiment of the present utility model, the utility model can the described content of by specification elect any mode to implement.
Specify below in conjunction with accompanying drawing:
The Guangzhou-Shenzhen railway Li Lang DK3+6191-18.0m framework that the applicant undertakes the construction of is positioned on the circular curve, adopts the merogenesis broken line to arrange, long 7 meters of every joint is divided into 27 joints, total length 189.78m.This project is to carry out large span, oblique framework jacking construction on existing railway, its single-unit framework 1843t that weighs, top Cheng Changda 146m, framework is positioned on the circular curve, adopts the merogenesis broken line to arrange, its direction and level control are very difficult, difficulty of construction is big, the technological requirement height.
According to the reagent situation we adopt multispan D type just beam fulcrum transformation approach construct, promptly adopt multispan D type just beam replace just roof beam structure ceases to be busy road of B8748, during the framework jacking, utilize the fulcrum transformation approach with the D type just the stressed fulcrum on the beam progressively be transformed on the fulcrum conversion beam from the hole digging pile buttress, abolish the middle hole digging pile buttress of main span then, the framework jacking is in place.Specific design and construct as follows:
With i iron pre-buried on the frame head plate is brace summer (3), the brace summer cantilever end adds steel pipe and supports (2), lay slideway (4), lower skateboard (5), jacking slide block (6) and upper slide (7) on the brace summer (3) successively, D type just beam (8) one ends is located on the upper slide (7), another section is located on the hole digging pile buttress (1), and rail (9) is positioned at the D type just on the beam (8).
According to the specific requirement of site operation to slide block, after pass the test, decision adopts polyethylene tetrafluoro plate as jacking slide block (6), this material is mainly as the bearing plate in the pot rubber bearing, very strong bearing capacity is arranged, its contact surface has less coefficient of friction, can effectively reduce the jacking resistance.
Polyethylene tetrafluoro plate is made into the slide block that physical dimension is 20cm * 25cm * 2.5cm, strengthens inspection during making, for damaging or being out of shape bigger slide block and in time changing to the slide block quality.Before slide block is installed, on its slide plane, be coated with last layer quality lubrication oil preferably equably earlier, further to reduce the jacking resistance.
Lower skateboard (5) adopts the thick iron plate of corrosion resistant plate parcel δ=20mm of δ=5mm to make, in case the limited slip plate distortion, its apparent size is 300cm * 50cm * 3cm, so that personnel operation.During installation, on corrosion resistant plate, be coated with last layer lubrication oil equably, to reduce the jacking resistance.
When jacking slide block (6) is installed, it is gathered one by one on lower skateboard (5), when the fulcrum conversion beam passes D type (8) just during beam, the slide block (6) that front end has been shifted out relays in the slide plate back, it is reused,, make things convenient for the jacking construction operation to improve the utilization rate of slide block.
The result shows: the framework jacking is carried out smoothly, and its jacking direction and absolute altitude control are good, and deviation is less, and the technical barrier of jacking quality control is resolved.
Claims (5)
1. fulcrum conversion beam that is used for jacking Large-span Oblique-crossing framework, it is characterized in that: with i iron pre-buried on the frame head plate is brace summer (3), the brace summer cantilever end adds steel pipe and supports (2), lay slideway (4), lower skateboard (5), jacking slide block (6) and upper slide (7) on the brace summer (3) successively, D type just beam (8) one ends is located on the upper slide (7), another section is located on the hole digging pile buttress (1), and rail (9) is positioned at the D type just on the beam (8).
2. according to the described fulcrum conversion beam that is used for jacking Large-span Oblique-crossing framework of claim 1, it is characterized in that: described brace summer (3) is welded into as a whole the composition by 6 I45C i iron.
3. the fulcrum conversion beam that is used for jacking Large-span Oblique-crossing framework according to claim 1 is characterized in that: described steel pipe supports (2) and is made up of the steel pipe of 3 external diameter 40cm, wall thickness 8mm.
4. according to the described fulcrum conversion beam that is used for jacking Large-span Oblique-crossing framework of claim 1, it is characterized in that: described jacking slide block (6) is adopted as 20cm * 25cm * 2.5cm polyethylene tetrafluoro plate, and slide block is coated with one deck lubrication oil before installing equably on its slide plane.
5. according to the described fulcrum conversion beam that is used for jacking Large-span Oblique-crossing framework of claim 1, it is characterized in that: described lower skateboard (5) is made with the thick iron plate of corrosion resistant plate parcel δ=20mm of δ=5mm, is of a size of 300cm * 50cm * 3cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201077169U CN201660851U (en) | 2010-02-03 | 2010-02-03 | Supporting point conversion beam for jacking large-span skew frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201077169U CN201660851U (en) | 2010-02-03 | 2010-02-03 | Supporting point conversion beam for jacking large-span skew frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201660851U true CN201660851U (en) | 2010-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201077169U Expired - Fee Related CN201660851U (en) | 2010-02-03 | 2010-02-03 | Supporting point conversion beam for jacking large-span skew frame |
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| CN (1) | CN201660851U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839578A (en) * | 2012-08-30 | 2012-12-26 | 中铁十局集团有限公司 | Construction method for manually longitudinally moving temporary beam in reinforcing multi-track line by use of D type temporary beam |
| CN103388311A (en) * | 2013-08-15 | 2013-11-13 | 中铁六局集团天津铁路建设有限公司 | Jacking method performing deviation correction at deflecting end through steel supports during oblique crossing jacking |
| CN106120530A (en) * | 2016-06-25 | 2016-11-16 | 俞钟晓 | Anti-bridge plate laterally lifts up the single Dun Qiao turned over |
-
2010
- 2010-02-03 CN CN2010201077169U patent/CN201660851U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839578A (en) * | 2012-08-30 | 2012-12-26 | 中铁十局集团有限公司 | Construction method for manually longitudinally moving temporary beam in reinforcing multi-track line by use of D type temporary beam |
| CN102839578B (en) * | 2012-08-30 | 2014-12-10 | 中铁十局集团有限公司 | Construction method for manually longitudinally moving temporary beam in reinforcing multi-track line by use of D type temporary beam |
| CN103388311A (en) * | 2013-08-15 | 2013-11-13 | 中铁六局集团天津铁路建设有限公司 | Jacking method performing deviation correction at deflecting end through steel supports during oblique crossing jacking |
| CN103388311B (en) * | 2013-08-15 | 2015-05-13 | 中铁六局集团天津铁路建设有限公司 | Jacking method performing deviation correction at deflecting end through steel supports during oblique crossing jacking |
| CN106120530A (en) * | 2016-06-25 | 2016-11-16 | 俞钟晓 | Anti-bridge plate laterally lifts up the single Dun Qiao turned over |
| CN106120530B (en) * | 2016-06-25 | 2018-07-13 | 宁波市奉化溪口金通熔接设备厂 | Anti- bridge plate laterally lifts up the single Dun Qiao turned over |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20130203 |