CN108930226A - The construction method of jacked frame bridge upper box in the way of spreading slide plate - Google Patents
The construction method of jacked frame bridge upper box in the way of spreading slide plate Download PDFInfo
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- CN108930226A CN108930226A CN201810947984.2A CN201810947984A CN108930226A CN 108930226 A CN108930226 A CN 108930226A CN 201810947984 A CN201810947984 A CN 201810947984A CN 108930226 A CN108930226 A CN 108930226A
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- slide plate
- cabinet
- spreading
- foundation pit
- stake
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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)
- Bridges Or Land Bridges (AREA)
Abstract
A kind of construction method of the jacked frame bridge upper box in the way of spreading slide plate.It includes setting foundation pit guard system；Form foundation pit；Slide plate and cabinet is made；In nose and both the ground mesohigh rotary churning pile below the region between wired outside constituted spreading slide plate；In shoveling jacking cabinet, until box-body jacking in place.The present invention has the advantage that improving the soil bearing capacity in the region using spreading slide plate.The jack-in process raising middle flask weight heart is more than half stroke always on slide plate and spreading slide plate, and pontic front end, which comes back, pricks head amplitude significantly reduces, and posture is steady.It is later in place to jacking that cabinet center of gravity leaves slide plate, its rear end is always on slide plate and spreading slide plate, there is no since slide plate is short and small and soil bearing capacity is insufficient, jacking later period box back is caused to sink suddenly, cause the state at bottom after height before entire cabinet, so as to cause both wired reinforcement systems are difficult in maintenance or even unstability, to seriously jeopardize traffic safety.
Description
Technical field
The invention belongs to wear multiply road technical field of construction under Framed underpass bridge, spreading slide plate is utilized more particularly to a kind of
Mode jacked frame bridge upper box construction method.
Background technique
With the rapid development of China's Urbanization Construction, the frame bridge construction of undercrossing tunnel is more and more, usually adopts at present
It is constructed with jacking.This construction method is arranged in both grounds of wired side mainly by being centered around to excavation pit
The foundation pit enclosure stake of two sides and rear end, the anti-foundation pit protection system for moving stake and the subgrade protection stake composition positioned at foundation pit front end outer side
System；Then excavate by foundation pit enclosure stake, the anti-foundation soil moved in the middle and back space that stake surrounds and form foundation pit, the front end of foundation pit
Portion is in ramped shaped；The slide plate of reinforced concrete structure is made on the bottom surface of foundation pit middle and back later；Then it is tied up on slide plate
Cabinet steel reinforcement cage and the supporting module on the outside of cabinet steel reinforcement cage；The casting concrete in template later, the shape after concrete setting
At the cabinet for constituting frame bridge main body；Then shoveling lateral dominance in side is with the jack being arranged between anti-shifting stake and box back to both
Wired lower section jacking cabinet, until box-body jacking in place, finally construct other affiliated facilities and frame bridge be made.But due to
Multiply is worn under at present, and both wired situation is more and more, and the structure size of cabinet is just relatively large in this case, pushes up Cheng Yue
It more grows, therefore jacking construction difficulty can increase considerably.It is in particular in following point: as described above, foundation pit front end
It is all foundation soil below slope, it is clear that bearing capacity is poor, is especially particularly acute in the high area of water level.In box-body jacking process
In, when region where cabinet front is located at slope, since the soil bearing capacity in the region is poor, the center of gravity of cabinet will
It moves forward because of front and back bearing capacity difference, is at this moment possible to that cabinet is therefore caused to prick head problem；And when cabinet front enters
Both under wired, but when not yet jacking is in place, when box back will be located at the region where slope, the bearing capacity of usual roadbed is big
At this moment soil bearing capacity in slope region is possible to therefore cause cabinet new line problem；In short, utilizing traditional top
Worn under into method jacking multiply both wired oversize cabinet when, be difficult to control the posture of cabinet, therefore be no longer satisfied existing
Phase security and functional requirement；As a result, work progress risk is larger, jeopardize traffic safety；After-frame bridge formation attitude error in place
It is larger, exceed code requirement, will affect successive projects construction and use functional requirement.
Summary of the invention
To solve the above-mentioned problems, the purpose of the present invention is to provide a kind of jacked frame bridges in the way of spreading slide plate
The construction method of upper box.
In order to achieve the above object, the construction of the jacked frame bridge upper box provided by the invention in the way of spreading slide plate
Method includes the following steps carried out in order:
1) setting is centered around the foundation pit enclosure stake to excavation pit two sides and rear end, anti-shifting in both grounds of wired side
Stake and positioned at foundation pit front end outer side subgrade protection stake, then be located at foundation pit two sides foundation pit enclosure stake top portion between be arranged
Thus support constitutes foundation pit guard system；
2) excavate by foundation pit enclosure stake, the anti-foundation soil moved in the middle and back space that stake surrounds and form foundation pit, before foundation pit
End is in ramped shaped；
3) slide plate of reinforced concrete structure is made on the bottom surface of foundation pit middle and back；Then cabinet steel is tied up on slide plate
Muscle cage and the supporting module on the outside of cabinet steel reinforcement cage；The casting concrete in template later is formed after concrete setting and is constituted
The cabinet of frame bridge main body, form removal；
4) while making cabinet, more are made in nose and both in the ground below the region between wired outside
High-pressure rotary jet grouting pile is made of spreading slide plate more high-pressure rotary jet grouting piles, and the stake top absolute altitude of high-pressure rotary jet grouting pile is higher than the table of slide plate
Face absolute altitude；
5) side shoveling lateral dominance with the jack being arranged between anti-shifting stake and box back to both wired lower section jacking cabinets,
Until box-body jacking in place, during excavating the foundation soil above spreading slide plate, high-pressure rotary jet grouting pile upper end is higher by slide plate
Pile crown is abolished, and measures the elevation of slide plate and spreading slide plate in time, flushes slide plate and the top surface of spreading slide plate.
The width of the spreading slide plate and cabinet it is of same size, length is according to the center of gravity of cabinet and the phase of nose
It is determined to position and close to both wired position of cabinet side.
The pile head elevation control of the high-pressure rotary jet grouting pile is at the above position 10cm of sled surface；Driving depth control is in 3m model
In enclosing.
The construction method of the jacked frame bridge upper box provided by the invention in the way of spreading slide plate has the advantages that
First, the soil bearing capacity in the region is improved using spreading slide plate.
Second, the jack-in process raising middle flask weight heart is more than half stroke always on slide plate and spreading slide plate, the lift of pontic front end
Head, bundle head amplitude significantly reduce, and posture is steady.
Third, cabinet center of gravity are left in place to jacking after slide plate, and its rear end is always on slide plate and spreading slide plate, no
Can exist since slide plate is short and small and soil bearing capacity is insufficient, cause jacking later period box back to sink suddenly, cause entire cabinet
It is preceding it is high after bottom state, so as to cause both wired reinforcement systems are difficult in maintenance or even unstability, to seriously jeopardize traffic safety.
Detailed description of the invention
Fig. 1 is to be constructed using the construction method of the jacked frame bridge upper box provided by the invention in the way of spreading slide plate
When construction site plan view.
Fig. 2 is to be constructed using the construction method of the jacked frame bridge upper box provided by the invention in the way of spreading slide plate
When construction site longitudinal direction cross-section diagram.
Fig. 3 is to be constructed using the construction method of the jacked frame bridge upper box provided by the invention in the way of spreading slide plate
When construction site transverse cross.
Specific embodiment
In the following with reference to the drawings and specific embodiments to provided by the invention in the way of spreading slide plate on jacked frame bridge
The construction method of cabinet is described in detail.
As shown in Fig. 1-Fig. 3, the construction party of the jacked frame bridge upper box provided by the invention in the way of spreading slide plate
Method includes the following steps carried out in order:
1) setting is centered around the foundation pit enclosure stake 1 to excavation pit two sides and rear end, resists in both grounds of wired side
Stake 2 and the subgrade protection stake 3 positioned at foundation pit front end outer side are moved, is then being located at 1 top of foundation pit enclosure stake of foundation pit two sides
Between be arranged support, thus constitute foundation pit guard system；
2) excavate by foundation pit enclosure stake 1, the anti-foundation soil moved in the middle and back space that stake 2 surrounds and form foundation pit, foundation pit
Front end 4 is in ramped shaped；
3) slide plate 5 of reinforced concrete structure is made on the bottom surface of foundation pit middle and back；Then cabinet is tied up on slide plate 5
Steel reinforcement cage and the supporting module on the outside of cabinet steel reinforcement cage；The casting concrete in template later, forms structure after concrete setting
At the cabinet 6 of frame bridge main body, form removal；
4) it while making cabinet 6, is made in 5 front end of slide plate and both in the ground below the region between wired 7 outside
More high-pressure rotary jet grouting piles are made of spreading slide plate 8 more high-pressure rotary jet grouting piles, and the stake top absolute altitude of high-pressure rotary jet grouting pile is higher than slide plate
5 surface level；The width of spreading slide plate 8 is of same size with cabinet 6, center of gravity and slide plate 5 front end of the length according to cabinet 6
It relative position and is determined close to both wired 7 position of 6 side of cabinet；The pile head elevation control of high-pressure rotary jet grouting pile is in slide plate
At the above position 10cm in 5 surfaces；Stake is long to be determined according to foundation bearing capacity obtained by design requirement minimum bearing capacity and actual experiment, this
Driving depth control in embodiment is within the scope of 3m；
5) shoveling lateral dominance in side, which is used, is arranged in the anti-jack moved between stake 2 and 6 rear end of cabinet to jacking case below both wired 7
Body 6, until box-body jacking in place, during excavating the foundation soil above spreading slide plate 8, high-pressure rotary jet grouting pile upper end is higher by cunning
The pile crown of plate 5 is abolished, and measures the elevation of slide plate 5 and spreading slide plate 8 in time, flushes slide plate 5 and the top surface of spreading slide plate 8.
Claims (3)
1. a kind of construction method of the jacked frame bridge upper box in the way of spreading slide plate, it is characterised in that: the construction
Method includes the following steps carried out in order:
1) setting is centered around foundation pit enclosure stake (1), anti-shifting to excavation pit two sides and rear end in both grounds of wired side
Then stake (2) and the subgrade protection stake (3) positioned at foundation pit front end outer side are pushed up in the foundation pit enclosure stake (1) for being located at foundation pit two sides
Support is set between portion, thus constitutes foundation pit guard system；
2) excavate by foundation pit enclosure stake (1), the anti-foundation soil moved in the middle and back space that stake (2) surround and form foundation pit, foundation pit
Front end (4) is in ramped shaped；
3) slide plate (5) of reinforced concrete structure is made on the bottom surface of foundation pit middle and back；Then cabinet is tied up on slide plate (5)
Steel reinforcement cage and the supporting module on the outside of cabinet steel reinforcement cage；The casting concrete in template later, forms structure after concrete setting
At the cabinet (6) of frame bridge main body, form removal；
4) it while making cabinet (6), is made in slide plate (5) front end and both in the ground below the region between wired (7) outside
Make more high-pressure rotary jet grouting piles, be made of spreading slide plate (8) more high-pressure rotary jet grouting piles, and the stake top absolute altitude of high-pressure rotary jet grouting pile is higher than
Slide plate (5 surface level；
5) setting of side shoveling lateral dominance moves the jack between stake (2) and cabinet (6) rear end to jacking below both wired (7) anti-
Cabinet (6), until box-body jacking in place, during excavating the foundation soil above spreading slide plate (8), by high-pressure rotary jet grouting pile upper end
The pile crown for being higher by slide plate (5) is abolished, and measures the elevation of slide plate (5) and spreading slide plate (8) in time, keeps slide plate (5) and spreading sliding
The top surface of plate (8) flushes.
2. the construction method of the jacked frame bridge upper box according to claim 1 in the way of spreading slide plate, feature
Be: the width of the spreading slide plate (8) is of same size with cabinet (6), and length is according to the center of gravity and slide plate of cabinet (6)
(5) position of the relative position of front end and both wired (7) close to cabinet (6) side determines.
3. the construction method of the jacked frame bridge upper box according to claim 1 in the way of spreading slide plate, feature
Be: the pile head elevation control of the high-pressure rotary jet grouting pile is at the above position 10cm in slide plate (5) surface；Driving depth control is in 3m model
In enclosing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810947984.2A CN108930226A (en) | 2018-08-20 | 2018-08-20 | The construction method of jacked frame bridge upper box in the way of spreading slide plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810947984.2A CN108930226A (en) | 2018-08-20 | 2018-08-20 | The construction method of jacked frame bridge upper box in the way of spreading slide plate |
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| CN108930226A true CN108930226A (en) | 2018-12-04 |
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|---|---|---|---|
| CN201810947984.2A Pending CN108930226A (en) | 2018-08-20 | 2018-08-20 | The construction method of jacked frame bridge upper box in the way of spreading slide plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111764315A (en) * | 2020-07-09 | 2020-10-13 | 中铁六局集团天津铁路建设有限公司 | Method for sleeving top of railway culvert in flood season |
Citations (5)
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| DE3419449A1 (en) * | 1984-05-24 | 1986-02-13 | KOMM GmbH & Co KG, Schwerlasthubsysteme Gleitbau, 8503 Altdorf | Device and method for displacement of structural components |
| FR2701734A1 (en) * | 1993-02-19 | 1994-08-26 | Beauthier Jean Marie | Method for the construction of structures under a slope of a railroad or the like. |
| CN102277880A (en) * | 2011-04-21 | 2011-12-14 | 中铁六局集团有限公司 | Large-sized box jacking control construction method capable of enhancing accuracy |
| CN102808381A (en) * | 2012-08-21 | 2012-12-05 | 中铁十局集团有限公司 | High-water-level silty-soil underneath-pass multi-track railway frame bridge jacking and butting construction method |
| CN105908625A (en) * | 2016-04-13 | 2016-08-31 | 中铁建大桥工程局集团第四工程有限公司 | Construction method for adding frame bridge under existing railway line based on dragging method |
-
2018
- 2018-08-20 CN CN201810947984.2A patent/CN108930226A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3419449A1 (en) * | 1984-05-24 | 1986-02-13 | KOMM GmbH & Co KG, Schwerlasthubsysteme Gleitbau, 8503 Altdorf | Device and method for displacement of structural components |
| FR2701734A1 (en) * | 1993-02-19 | 1994-08-26 | Beauthier Jean Marie | Method for the construction of structures under a slope of a railroad or the like. |
| CN102277880A (en) * | 2011-04-21 | 2011-12-14 | 中铁六局集团有限公司 | Large-sized box jacking control construction method capable of enhancing accuracy |
| CN102808381A (en) * | 2012-08-21 | 2012-12-05 | 中铁十局集团有限公司 | High-water-level silty-soil underneath-pass multi-track railway frame bridge jacking and butting construction method |
| CN105908625A (en) * | 2016-04-13 | 2016-08-31 | 中铁建大桥工程局集团第四工程有限公司 | Construction method for adding frame bridge under existing railway line based on dragging method |
Non-Patent Citations (2)
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| 丁任盛: "《铁路营业线工程施工技术》", 30 June 2014 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111764315A (en) * | 2020-07-09 | 2020-10-13 | 中铁六局集团天津铁路建设有限公司 | Method for sleeving top of railway culvert in flood season |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Qi Pengyu Inventor after: Wang Jiawu Inventor after: Huang Jian Inventor after: Zhao Qi Inventor after: Gao Long Inventor after: Gao Xiang Inventor after: Zhang Jipei Inventor after: Xian Binglin Inventor after: Yang Zhi Inventor before: Wang Jiawu Inventor before: Huang Jian Inventor before: Zhao Qi Inventor before: Gao Long Inventor before: Gao Xiang Inventor before: Zhang Jipei Inventor before: Xian Binglin Inventor before: Yang Zhi |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181204 |