CN102691293B - Reinforcement construction method with soft foundation grouting in railway frame bridge jacking process - Google Patents
Reinforcement construction method with soft foundation grouting in railway frame bridge jacking process Download PDFInfo
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- CN102691293B CN102691293B CN201210189372.4A CN201210189372A CN102691293B CN 102691293 B CN102691293 B CN 102691293B CN 201210189372 A CN201210189372 A CN 201210189372A CN 102691293 B CN102691293 B CN 102691293B
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Abstract
The invention discloses a reinforcement construction method with soft foundation grouting in a railway frame bridge jacking process. The method comprises the following steps of: reinforcing soft foundations positioned below station tracks on the two sides of a frame bridge to be jacked on a station yard and a main station track in the middle of the frame bridge by virtue of a slant pouring method; and reinforcing soft foundations positioned below branch station tracks in the middle of the station yard by virtue of a direct pouring method. In the railway frame bridge jacking process, the slant pouring method and the direct pouring method are combined for reinforcing the soft foundations under the railway frame bridge below the multiple station tracks; as the speed of vertical pouring is high, the time for reinforcing each station track is only about 48 hours, so that the construction period can be shortened substantially; and thus the reinforcement construction method is applicable to electrified railway construction, and causes least interference on the normal operation of a railway line.
Description
Technical field
The invention belongs to construction of railways technical field, particularly relate to soft base construction method for grouting reinforcement in a kind of Railway Frame Bridge jack-in process.
Background technology
Along with the develop rapidly of town and country construction, the recoverable amount of automobile is just at increasing year by year, so existing highway cannot meet the requirement of traffic, therefore sometimes just need under some existing railway lines, lay frame bridge, or existing old frame bridge is replaced with new frame bridge, so that vehicle is current.At present, under existing railway line, conventionally adopt jacking by the method that new frame bridge is replaced old frame bridge, this method is first to adopt slip casting method to reinforce the soft foundation of old frame bridge bottom, the existing railway line of reinforcing frame bridge formation top simultaneously, then utilize many jack that are arranged between old frame bridge and new frame bridge that the new frame bridge segmentation that is positioned at existing railway line one side is pushed up to existing railway line, old frame bridge is ejected simultaneously.But, there is following point in this construction method: the lower time of existing railway line beyond frame bridge is positioned at field, station, maximum 6 strands of this existing railway line, therefore conventionally adopt the requirement that can meet reinforced soft soil ground existing railway line from the method for the oblique slip casting in both sides of existing railway line, but, when frame bridge is positioned at station field wire road lower time, due to nearly ten multiplies of a station circuit of locating, adopt oblique slip casting rule cannot add the soft foundation below the station track that is seated in middle part if therefore simple from circuit outside.In addition, oblique slip casting method is to adopt the oblique punching grouting behind shaft or drift lining of spiral drilling machine, although the vibrations of this rig are little, therefore little on the impact of existing railway line, still, because distance between the station track of middle part is less, if so still adopt oblique slip casting method will be difficult to operate, particularly oblique slip casting method speed of application is slow, so cause long in time limitly, this is unallowed in construction of railways.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of speed of application fast, therefore soft base construction method for grouting reinforcement in short Railway Frame Bridge jack-in process of duration.
In order to achieve the above object, in Railway Frame Bridge jack-in process provided by the invention, soft base construction method for grouting reinforcement comprises the following steps:
1) adopt oblique slip casting method to reinforce to the soft foundation that is positioned at the below, station track for the treatment of both sides, jacked frame bridge place on field, station;
2) arbitrary branch line station track of main line station track one side that is positioned at a middle part, station is temporarily sealed, then adopted oblique slip casting method to reinforce the soft foundation that is positioned at this below, main line station track from this branch line station track;
3) adopt vertical slip casting method to reinforce to the soft foundation of the below, branch line station track that is positioned at a middle part, station, first temporarily seal this branch line station track, then on this branch line station track, treat surface, the position laying groined type operation platform of jacked frame bridge and fix, afterwards by many vibrodrill standoff distance end surfaces at operation platform placed side by side;
4) utilize many vibrodrills that multiple holes grouting pipe is inserted in soft foundation downward vertically through the eyelet on operation platform, if conflict mutually in the position of Kong Weiyu sleeper, first this sleeper is removed, thereby below sleeper and in the soft foundation in outside, sleeper two ends, form a round, afterwards vibrodrill is moved forward to next station place and continue boring;
5) feed pipe for mortar being connected with pulp injection tank is connected with the multiple holes grouting pipe upper end being inserted in soft foundation, then utilize grouting pump that the injection slurry in pulp injection tank is pressed in multiple holes grouting pipe, slurries are radiated in its soft foundation around by the eyelet on multiple holes grouting pipe, after slip casting, multiple holes grouting pipe upper end closed are lived;
6) after solidifying, ground utilize vibrodrill that multiple holes grouting pipe is extracted from ground until the slurries of above-mentioned injection, until all reinforced soft soil grounds are complete on this branch line station track, then all vibrodrills and operation platform are moved to the next branch line station track of having sealed, and by open-minded the branch line station track of consolidated subsoil;
7) repeating step 3)-step 6), until complete the ground stabilization process of all branch lines station track.
Described step 4) in distance between the vertical adjacent holes center forming be 1 meter, radiation radius is 0.5 meter.
Described step 4) in be 2.44 meters in outermost pitch-row from the beeline between the center, station track being adjacent in the vertical round forming, in case affect the normal operation of this station track.
In Railway Frame Bridge jack-in process provided by the invention, soft base construction method for grouting reinforcement is to adopt the mode that oblique slip casting combines with vertical slip casting to reinforce being positioned at soft foundation under the Railway Frame Bridge below multiply road, because the speed of vertical slip casting is fast, every station track consolidation time approximately only needs 48 hours, therefore the construction period can significantly be shortened, adapt to electrified railway construction, and disturb minimum to the normal operation of existing railway line.
Brief description of the drawings
Fig. 1 is branch line station track transversary schematic diagram in soft base construction method for grouting reinforcement work progress in employing Railway Frame Bridge jack-in process provided by the invention.
Fig. 2 is branch line station track vertical structure schematic diagram in soft base construction method for grouting reinforcement work progress in employing Railway Frame Bridge jack-in process provided by the invention.
Fig. 3 adopts the operation platform and the upper vibrodrill structure top view thereof that in Railway Frame Bridge jack-in process provided by the invention, in soft base construction method for grouting reinforcement work progress, use.
Fig. 4 is in soft base construction method for grouting reinforcement work progress in employing Railway Frame Bridge jack-in process provided by the invention
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, soft base construction method for grouting reinforcement in Railway Frame Bridge jack-in process provided by the invention is elaborated.
As shown in Figure 1, in Railway Frame Bridge jack-in process provided by the invention, soft base construction method for grouting reinforcement comprises the following steps:
1) adopt oblique slip casting method to reinforce to the soft foundation that is positioned at the below, station track for the treatment of both sides, jacked frame bridge place on field, station;
2) arbitrary branch line station track of main line station track one side that is positioned at a middle part, station is temporarily sealed, then adopted oblique slip casting method to reinforce the soft foundation that is positioned at this below, main line station track from this branch line station track;
3) adopt vertical slip casting method to reinforce to the soft foundation of 1 below, branch line station track that is positioned at a middle part, station, first temporarily seal this branch line station track 1, then on this branch line station track 1, treat surface, the position laying groined type operation platform 2 of jacked frame bridge and fix, afterwards by the end surfaces at operation platform 2 placed side by side many vibrodrills 3 standoff distances;
4) utilize many vibrodrills 3 that multiple holes grouting pipe is inserted in soft foundation downward vertically through the eyelet on operation platform 2, if conflict mutually in the position of Kong Weiyu sleeper 4, first this sleeper 4 is removed, thereby form a round 5 below sleeper and in the soft foundation in outside, sleeper two ends, distance between adjacent holes 5 centers is 1 meter, radiation radius is 0.5 meter, as shown in label in Fig. 46, in addition, in one round 5, be 2.44 meters in outermost pitch-row from the beeline between the center, station track being adjacent, in case affect the normal operation of this station track, afterwards vibrodrill 3 is moved forward to next station place and continue boring,
5) feed pipe for mortar being connected with pulp injection tank is connected with the multiple holes grouting pipe upper end being inserted in soft foundation, then utilize grouting pump that the injection slurry in pulp injection tank is pressed in multiple holes grouting pipe, slurries are radiated in its soft foundation around by the eyelet on multiple holes grouting pipe, after slip casting, multiple holes grouting pipe upper end closed are lived;
6) after solidifying, ground utilize vibrodrill 3 that multiple holes grouting pipe is extracted from ground until the slurries of above-mentioned injection, until all reinforced soft soil grounds are complete on this branch line station track 1, then all vibrodrills 3 and operation platform 2 are moved to the next branch line station track 1 of having sealed, and by open-minded the branch line station track 1 of consolidated subsoil;
7) repeating step 3)-step 6), until complete the ground stabilization process of all branch lines station track 1.
Claims (3)
1. a soft base construction method for grouting reinforcement in Railway Frame Bridge jack-in process, is characterized in that: described construction method comprises the following steps:
1) adopt oblique slip casting method to reinforce to the soft foundation that is positioned at the below, station track for the treatment of both sides, jacked frame bridge place on field, station;
2) arbitrary branch line station track of main line station track one side that is positioned at a middle part, station is temporarily sealed, then adopted oblique slip casting method to reinforce the soft foundation that is positioned at this below, main line station track;
3) adopt vertical slip casting method to reinforce to the soft foundation of the below, branch line station track (1) that is positioned at a middle part, station, first temporarily seal this branch line station track (1), then on this branch line station track (1), treat the position surface laying groined type operation platform (2) of jacked frame bridge and fix, afterwards by the end surfaces at operation platform (2) placed side by side many vibrodrills (3) standoff distance;
4) utilize many vibrodrills (3) that multiple holes grouting pipe is inserted in soft foundation downward vertically through the eyelet on operation platform (2), if conflict mutually in the position of Kong Weiyu sleeper (4), first this sleeper (4) is removed, thereby below sleeper and in the soft foundation in outside, sleeper two ends, form a round (5), afterwards vibrodrill (3) is moved forward to next station place and continue boring;
5) feed pipe for mortar being connected with pulp injection tank is connected with the multiple holes grouting pipe upper end being inserted in soft foundation, then utilize grouting pump that the injection slurry in pulp injection tank is pressed in multiple holes grouting pipe, slurries are radiated in its soft foundation around by the eyelet on multiple holes grouting pipe, after slip casting, multiple holes grouting pipe upper end closed are lived;
6) after solidifying, ground utilize vibrodrill (3) that multiple holes grouting pipe is extracted from ground until the slurries of above-mentioned injection, until the upper all reinforced soft soil grounds in this branch line station track (1) are complete, then all vibrodrills (3) and operation platform (2) are moved to the next branch line station track (1) of having sealed, and by open-minded the branch line station track (1) of consolidated subsoil;
7) repeating step 3)-step 6), until complete the ground stabilization process of all branch lines station track (1).
2. soft base construction method for grouting reinforcement in Railway Frame Bridge jack-in process according to claim 1, is characterized in that: described step 4) in distance between vertical adjacent holes (5) center forming be 1 meter, radiation radius is 0.5 meter.
3. soft base construction method for grouting reinforcement in Railway Frame Bridge jack-in process according to claim 1, is characterized in that: described step 4) in be 2.44 meters in outermost pitch-row from the beeline between the center, station track being adjacent in the vertical round (5) forming.
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| CN201210189372.4A CN102691293B (en) | 2012-06-11 | 2012-06-11 | Reinforcement construction method with soft foundation grouting in railway frame bridge jacking process |
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| CN201210189372.4A CN102691293B (en) | 2012-06-11 | 2012-06-11 | Reinforcement construction method with soft foundation grouting in railway frame bridge jacking process |
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| CN102691293B true CN102691293B (en) | 2014-06-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111764286A (en) * | 2020-06-16 | 2020-10-13 | 中铁二十四局集团有限公司 | Frame bridge jacking construction method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105239475B (en) * | 2015-11-04 | 2017-03-15 | 中铁六局集团有限公司 | Track strengthening structure under complicated existing railway line in culvert jack-in process |
| CN113846639B (en) * | 2021-11-16 | 2022-11-04 | 中铁北京工程局集团有限公司 | Construction method for reinforcing railway frame bridge by adopting soft foundation grouting in jacking process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100683589B1 (en) * | 2004-12-24 | 2007-02-15 | 한국철도기술연구원 | Amethod for solidification of railroad bridge and public works-connection part |
| CN101343861A (en) * | 2008-08-22 | 2009-01-14 | 中铁六局集团有限公司 | Construction method for replacing old frame bridge by new frame bridge in existing railway lines |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100683589B1 (en) * | 2004-12-24 | 2007-02-15 | 한국철도기술연구원 | Amethod for solidification of railroad bridge and public works-connection part |
| CN101343861A (en) * | 2008-08-22 | 2009-01-14 | 中铁六局集团有限公司 | Construction method for replacing old frame bridge by new frame bridge in existing railway lines |
Non-Patent Citations (2)
| Title |
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| 浅析顶进软土地基注浆施工;王强;《科技信息》;20101231(第22期);666，664 * |
| 王强.浅析顶进软土地基注浆施工.《科技信息》.2010,(第22期), |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111764286A (en) * | 2020-06-16 | 2020-10-13 | 中铁二十四局集团有限公司 | Frame bridge jacking construction method |
| CN111764286B (en) * | 2020-06-16 | 2021-04-02 | 中铁二十四局集团有限公司 | Frame bridge jacking construction method |
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