CN208965416U - A kind of safeguard structure of large span frame bridge jack-in process existing railway - Google Patents
A kind of safeguard structure of large span frame bridge jack-in process existing railway Download PDFInfo
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- CN208965416U CN208965416U CN201821146446.5U CN201821146446U CN208965416U CN 208965416 U CN208965416 U CN 208965416U CN 201821146446 U CN201821146446 U CN 201821146446U CN 208965416 U CN208965416 U CN 208965416U
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- steel
- horizontal lift
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- large span
- existing railway
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Abstract
The highway midline position of a kind of safeguard structure of large span frame bridge jack-in process existing railway, pontic is equipped with horizontal lift beam, is covered with steel plate between horizontal lift beam and pontic；The strong ties such as just beam sides by connecting plate and bracket frame is connected to stringer to D fashioned iron, and the stringer of two width D fashioned iron just beam is docked and used by high-strength burnished bolt, form steel just beam group；Just beam group rides upon on horizontal lift beam and across pontic steel, and in steel, just beam group both ends lower part is equipped with well foundation, and to steel, just beam group is supported.Pass through above structure, the utility model solves protects the existing track strengthening period long using I-steel in the prior art, it is long to both wired driving interference times, steel using amount is big, transport is inconvenient, the high technical problem of cost, providing one kind not only can guarantee existing line operation security but also, the safeguard structure of construct convenient and fast large span frame bridge jack-in process existing railway short to both wired driving interference times.
Description
Technical field
The utility model relates to add viaduct line protection technical field under existing railway, especially a kind of large span frame
The means of defence structure of structure bridge jack-in process existing railway.
Background technique
In engineering construction field, existing railway gradually carries out highway usual friendship and transform as down to wear grade separation, add viaduct or
Expand the engineering constructions such as existing bridges and culverts aperture, be predominantly located in the busy location of railway transportation, railways train operation can not be interrupted for a long time,
Closed-loop construction.Consider expropriation of land and economic cause, just line detour scheme is also difficult to carry out building railway, therefore undercrossing tunnel grade separation
Bridge is all made of aerial existing railway pipe jacking method.At this stage, it makes somebody a mere figurehead the method for existing railway: wearing road under viaduct instantly and have a lot of social connections
When spending smaller, using D fashioned iron just beam；When road width is larger under viaduct, D fashioned iron is when just beam can not protect, using work in length and breadth
Word steel.Although I-steel protection is able to satisfy the requirement of large span in length and breadth, the track strengthening period is long, interferes both wired drivings
Time is long, and steel using amount is big, and transport is inconvenient, and cost is high.
Summary of the invention
In view of the above problems, the utility model proposes a kind of protection knots of large span frame bridge jack-in process existing railway
The highway midline position of structure, pontic is equipped with horizontal lift beam, is covered with steel plate between horizontal lift beam and pontic；Just beam sides passes through D fashioned iron
Connecting plate and bracket frame are connected to stringer, and the stringer of two width D fashioned iron just beam is docked and used by high-strength burnished bolt
Strong ties form steel just beam group；Just beam group rides upon on horizontal lift beam and across pontic steel, steel just beam group both ends lower part be equipped with it is heavy
Well basis, to steel, just beam group is supported.By above structure, the utility model solves anti-using I-steel in the prior art
The track strengthening period existing for protecting is long, and long to both wired driving interference times, steel using amount is big, and transport is inconvenient, the high technology of cost
Problem.
To achieve the goals above, a kind of the technical solution adopted in the utility model are as follows: large span frame bridge jack-in process
The safeguard structure of existing railway, it is characterised in that: the highway midline position of pontic is equipped with horizontal lift beam, between horizontal lift beam and pontic
It is covered with steel plate；Just beam sides by connecting plate and bracket frame is connected to stringer to D fashioned iron, and the stringer of two width D fashioned iron just beam passes through height
Strong burnished bolt such as is docked and use at the strong ties, formation steel just beam group；Just beam group rides upon on horizontal lift beam and across bridge steel
Body, in steel, just beam group both ends lower part is equipped with well foundation, and to steel, just beam group is supported.
Mutual foundation is equipped with below horizontal lift beam at the highway midline position.
It is equipped with rolling bar between the horizontal lift beam and steel plate, reduces the frictional force between horizontal lift beam and steel plate in the jacking phase.
Just beam is 24m D fashioned iron just beam to the D fashioned iron, and just beam group entire length is 48m to steel.
The utility model has the following beneficial effects: on-site consolidation, in conjunction with steel, just beam is protected due to D fashioned iron just beam prefabrication
Existing line stability, in terms of experience and data, have stable structure, protection span it is big, construction method letter
Single, route is gone slowly time short and economic and practical advantage.
Detailed description of the invention
Fig. 1 is just erection floor map.
Fig. 2 is the schematic diagram of the section structure along Fig. 1 among pontic highway.
Specific embodiment
A kind of safeguard structure of large span frame bridge jack-in process existing railway, structure are as follows: the highway middle line position of pontic 4
It sets and is equipped with horizontal lift beam 2, steel plate 5 is covered between horizontal lift beam 2 and pontic 4, the effect of steel plate 5 is to guarantee pontic not because of horizontal lift
Beam concentrates symbol to carry and destroyed；Just 1 side of beam by connecting plate 1-1 and bracket frame 1-2 is connected to stringer 1-3, two width to D fashioned iron
The stringer 1-3 of D fashioned iron just beam 1 such as is docked and is used by high-strength burnished bolt at the strong ties, forms steel just beam group；Steel just beam
Group rides upon on horizontal lift beam 2 and across pontic 4, and in steel, just beam group both ends lower part is equipped with well foundation 3, and to steel, just beam group is propped up
Support.
Mutual foundation 6 is equipped with below horizontal lift beam 2 at the highway midline position.The size of specific well foundation 3
For φ 1.5m, the size of mutual foundation 6 is 1.5m × 2.1m.Make mutual foundation 6 field of load be greater than well foundation 3 by
Power range.Mutual foundation 6 and 3 collective effect of well foundation, play a supporting role to total.
It is equipped with rolling bar between the horizontal lift beam 2 and steel plate 5, reduces the friction between horizontal lift beam 2 and steel plate 5 in the jacking phase
Power.
Just beam 1 is 24m D fashioned iron just beam to the D fashioned iron, and just beam group entire length is 48m to steel.The length of 48m is entirely capable of
Enough meet the construction requirement of various pontics.Structure is applied widely.
The utility model, which provides one kind, as a result, not only can guarantee existing line operation security but also to both wired driving interference times
It is short, the safeguard structure for convenient and fast large span frame bridge jack-in process existing railway of constructing.
Claims (4)
1. a kind of safeguard structure of large span frame bridge jack-in process existing railway, it is characterised in that: the highway middle line of pontic (4)
Position is equipped with horizontal lift beam (2), is covered with steel plate (5) between horizontal lift beam (2) and pontic (4)；Just beam (1) side passes through company to D fashioned iron
Fishplate bar (1-1) and bracket frame (1-2) are connected to stringer, and the stringer (1-3) of two width D fashioned iron just beam (1) passes through high-strength burnished bolt
It the strong ties such as is docked and is used, form steel just beam group；Just beam group rides upon on horizontal lift beam (2) and across pontic (4) steel,
Just beam group both ends lower part is equipped with well foundation (3) to steel, and to steel, just beam group is supported.
2. a kind of safeguard structure of large span frame bridge jack-in process existing railway according to claim 1, feature exist
In: mutual foundation (6) are equipped with below the horizontal lift beam (2) at the highway midline position.
3. a kind of safeguard structure of large span frame bridge jack-in process existing railway according to claim 1, feature exist
In: it is equipped with rolling bar between the horizontal lift beam (2) and steel plate (5), is reduced between horizontal lift beam (2) and steel plate (5) in the jacking phase
Frictional force.
4. a kind of safeguard structure of large span frame bridge jack-in process existing railway according to claim 1, feature exist
In: just beam (1) is 24m D fashioned iron just beam to the D fashioned iron, and just beam group entire length is 48m to steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821146446.5U CN208965416U (en) | 2018-07-19 | 2018-07-19 | A kind of safeguard structure of large span frame bridge jack-in process existing railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821146446.5U CN208965416U (en) | 2018-07-19 | 2018-07-19 | A kind of safeguard structure of large span frame bridge jack-in process existing railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208965416U true CN208965416U (en) | 2019-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201821146446.5U Active CN208965416U (en) | 2018-07-19 | 2018-07-19 | A kind of safeguard structure of large span frame bridge jack-in process existing railway |
Country Status (1)
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| CN (1) | CN208965416U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374018A (en) * | 2019-06-17 | 2019-10-25 | 中铁六局集团呼和浩特铁路建设有限公司 | A kind of combined steel cross bearer sets up multispan just beam track strengthening method |
| CN110468735A (en) * | 2019-08-23 | 2019-11-19 | 中铁第六勘察设计院集团有限公司 | Frame core-tube system jacking engineering middle orbit construction method under existing railway operation state |
| CN110512474A (en) * | 2019-09-12 | 2019-11-29 | 中铁二局第二工程有限公司 | A kind of railroad track makes somebody a mere figurehead ruggedized construction and method |
-
2018
- 2018-07-19 CN CN201821146446.5U patent/CN208965416U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374018A (en) * | 2019-06-17 | 2019-10-25 | 中铁六局集团呼和浩特铁路建设有限公司 | A kind of combined steel cross bearer sets up multispan just beam track strengthening method |
| CN110468735A (en) * | 2019-08-23 | 2019-11-19 | 中铁第六勘察设计院集团有限公司 | Frame core-tube system jacking engineering middle orbit construction method under existing railway operation state |
| CN110512474A (en) * | 2019-09-12 | 2019-11-29 | 中铁二局第二工程有限公司 | A kind of railroad track makes somebody a mere figurehead ruggedized construction and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200630 Address after: No.10, Zhongshan Road, Hongshunli street, Hebei District, Tianjin Patentee after: The Third Railway Survey and Design Institute Co., Ltd Address before: 121002 No. 20, Section 4, Heping Road, Linghe Street, Jinzhou City, Liaoning Province Patentee before: JINZHOU RAILWAY SURVEY & DESIGN INSTITUTE Co.,Ltd. |
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| TR01 | Transfer of patent right |