CN208055762U - The subgrade reinforcing device of hump line line style is safeguarded in a kind of jacking bridge construction - Google Patents
The subgrade reinforcing device of hump line line style is safeguarded in a kind of jacking bridge construction Download PDFInfo
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- CN208055762U CN208055762U CN201820197230.5U CN201820197230U CN208055762U CN 208055762 U CN208055762 U CN 208055762U CN 201820197230 U CN201820197230 U CN 201820197230U CN 208055762 U CN208055762 U CN 208055762U
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- retaining wall
- reinforced retaining
- frame bridge
- weathering
- track
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Abstract
The utility model discloses the subgrade reinforcing devices that hump line line style is safeguarded in a kind of jacking bridge construction, the device includes frame bridge, frame bridge front overhang is provided in front of frame bridge, it is provided with the excavation soil body in front of the frame bridge front overhang, the rear of frame bridge and bottom is provided with jacking jack, there are two reinforced retaining walls for setting above frame bridge；It is provided with spreading reinforcing bar at the top of reinforced retaining wall, excavates and is provided with track strengthening system on the soil body, humping track is provided in track strengthening system；The bottom of reinforced retaining wall is provided with drain hole, and weathering is provided between reinforced retaining wall, and weathering drainage direction is consistent with the rolling direction of humping track, and the lower edge of drain hole is concordant with the upper surface of weathering；Graded broken stone is filled between reinforced retaining wall and above weathering.The utility model can fast quick-recovery circuit, shorten the construction period, greatly save cost, reduce the influence to railroad embankment.
Description
Technical field
The utility model belongs to construction of railways technical field, specifically, safeguarding hump in being related to a kind of jacking bridge construction
The subgrade reinforcing device of line line style.
Background technology
As domestic Rail Highway reticular density increases, road and railroad crossing crossing project gradually increases, in order not to middle line-break
Vehicle mostly uses Framed underpass bridge construction.The case where encountering undercrossing tunnel hump line in frame bridge undercrossing tunnel marshalling yard, iron
Road hump line requires circuit line style and track geometry stringent due to its special purposes.When jacking bridge passes through hump line, break
It is broken the road structure of the original stabilization of circuit, becomes frame crossstructure from the natural stratum structure stablized, if still using
The mode of bedding natural discharging slope can not only increase circuit bedding width, increase the influence to adjacent lines, also result in recovery line
Road is slower, extends the duration.Meanwhile the Stability and veracity of humping track line style and track geometry also is difficult to be guaranteed, and makes
Obtaining safety of the hump line in car slipping operation reduces, and the danger that derailing is overturned occurs when serious.
Utility model content
In view of this, the utility model provides the subgrade reinforcing dress for safeguarding hump line line style in a kind of jacking bridge construction
It sets.
In order to solve the above-mentioned technical problem, the utility model discloses safeguard hump line line style in a kind of jacking bridge construction
Subgrade reinforcing device, including frame bridge are provided with frame bridge front overhang in front of the frame bridge, are set in front of the frame bridge front overhang
It is equipped with the excavation soil body, the rear of the frame bridge and bottom is provided with jacking jack, two are provided with above the frame bridge
A reinforced retaining wall being oppositely arranged；It is provided with spreading reinforcing bar at the top of the reinforced retaining wall, is arranged on the excavation soil body wired
Road reinforcement system is provided with humping track in the track strengthening system；Reinforced retaining wall is arranged along humping track direction, is located at camel
Crest line road both sides；The bottom of the reinforced retaining wall is provided with drain hole, and weathering, the row are provided between the reinforced retaining wall
Water slope drainage direction is consistent with the rolling direction of humping track, and the lower edge of the drain hole is concordant with the upper surface of weathering；
Graded broken stone is filled between the reinforced retaining wall and above weathering, the height of the graded broken stone is less than reinforced retaining wall.
Further, it is provided with filter screen on the drain hole.
Further, the structure type of the reinforced retaining wall is gravity type vertical retaining wall form.
Further, the reinforced retaining wall height is less than 20~30cm of track strengthening system.
Further, the spreading reinforcing bar is higher by 30cm at the top of reinforced retaining wall.
Further, when the frame bridge span is less than or equal to 30m, the weathering is single slope drainage slope or two-way
Weathering；It is set as double drainage slope when frame bridge span is more than 30m.
Further, the gradient of weathering is 0.5%, and the aperture of drain hole is 10cm, and the spacing of drain hole is 1m.
Compared with prior art, the utility model can be obtained including following technique effect：
1) water at humping track subgrade bed position can be quickly discharged in the combination of weathering and drain hole.Meanwhile gravity
The vertical Reinforced Concrete Retaining Walls of formula rigidity itself is big, high capacity, and stability is good, effectively maintains hump line line style and geometric form
Position, it is ensured that the accuracy of hump line car slipping operation and safety.
2) reinforced retaining wall is more applicable for frame bridge structure, not only reduces circuit than original rubble bulkhead thickness smaller
Bedding overall structure width has saved circuit and has taken up an area resource, also reduced the influence of hump line and adjacent lines.
3) prefabricated reinforced retaining wall intensity stabilization when coming into operation, under hump line car slipping operation dynamic effect, limitation
The variation of bedding lateral displacement is relatively reliable, it is ensured that line security uses.
4) shift to an earlier date prefabricated reinforced retaining wall and filling railway ballast can be to avoid largely construction operation influences circuit after pontic is in place
Safety, and jacking it is in place after can fast quick-recovery circuit, shorten the construction period, greatly save cost, reduce the shadow to railroad embankment
It rings.
Certainly, implement any product of the utility model it is not absolutely required to and meanwhile reach all the above technology effect
Fruit.
Description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and constitutes one of the utility model
Point, the exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the utility model
Improper restriction.In the accompanying drawings：
Fig. 1 is the structural schematic diagram for the subgrade reinforcing device that hump line line style is safeguarded in the utility model jacking bridge construction；
Fig. 2 is to safeguard that the subgrade reinforcing method construction of hump line line style terminates post-reinforcing in the utility model jacking bridge construction
Design sketch (along line direction)；
Fig. 3 is to safeguard that the subgrade reinforcing method construction of hump line line style terminates post-reinforcing in the utility model jacking bridge construction
Design sketch (horizontal path direction).
In figure, 1, humping track；2, track strengthening system；3, reinforced retaining wall；4, graded broken stone；5, frame bridge；6, frame
Bridge front overhang；7, the soil body is excavated；8, jacking jack；9, railway ballast；10, drain hole；11, spreading reinforcing bar；12, weathering.
Specific implementation mode
The embodiment of the utility model is described in detail below in conjunction with embodiment, thereby how the utility model is answered
It solves technical problem and reaches the realization process of technical effect to fully understand and implement with technological means.
The utility model discloses the subgrade reinforcing devices that hump line line style is safeguarded in a kind of jacking bridge construction, including frame
The front of bridge 5, the frame bridge 5 is provided with frame bridge front overhang 6, and 6 front of the frame bridge front overhang, which is provided with, excavates the soil body 7, institute
It states the rear of frame bridge 5 and bottom is provided with jacking jack 8, there are two be oppositely arranged for the frame bridge 5 top setting
Reinforced retaining wall 3；The top of the reinforced retaining wall 3 is provided with spreading reinforcing bar 11, and track strengthening body is provided on the excavation soil body 7
Be 2, track strengthening system with Framed underpass bridge to apart from 5~7m of reinforcement system when, the soil body is excavated, track strengthening system 2
There is no supporting point, reinforced retaining wall to need that circuit reinforcement system is coordinated to reinforce circuit, be arranged in the track strengthening system 2
There is humping track 1；Reinforced retaining wall 3 is arranged along 1 direction of humping track, is located at 1 both sides of humping track；The bottom of the reinforced retaining wall 3
Portion is provided with drain hole 10, and weathering 12,12 drainage direction of the weathering and hump line are provided between the reinforced retaining wall 3
The rolling direction on road 1 is consistent, and the lower edge of the drain hole 10 is concordant with the upper surface of weathering 12；The reinforced retaining wall 3 it
Between and be filled with above weathering 12 graded broken stone 4, the height of the graded broken stone 4 is less than reinforced retaining wall 3.
Optionally, it is provided with filter screen on the drain hole 10.
Optionally, the structure type of the reinforced retaining wall 3 is gravity type vertical retaining wall form.
Optionally, 3 height of the reinforced retaining wall is less than 2 20~30cm of track strengthening system.
Optionally, the spreading reinforcing bar 11 is higher by 3 top 30cm of reinforced retaining wall.
Optionally, when 5 span of the frame bridge is less than or equal to 30m, the weathering 12 is single slope drainage slope or double
To weathering；It is set as double drainage slope when 5 span of frame bridge is more than 30m.
Optionally, the gradient of weathering 12 is 0.5%, and the aperture of drain hole 10 is 10cm, and the spacing of drain hole 10 is 1m.
The application method of the subgrade reinforcing device of hump line line style, including following step are safeguarded in above-mentioned jacking bridge construction
Suddenly：
S1, the prefabricated frame bridge formation 5 in working pit, according to the former rubble bulkhead position of hump line 1, determine that reinforced retaining wall 3 exists
Position on 5 top surface of frame bridge, reinforced retaining wall 3 are arranged along 1 direction of humping track, are located at 1 both sides of humping track, the reinforced retaining wall
It is built on the basis of removing original rubble bulkhead；
S2, the reserved steel bar at the design position of reinforced retaining wall 3 on 5 top surface of frame bridge, according to the structure shape of reinforced retaining wall 3
The framework of steel reinforcement of formula and high wide size binding barricade, the reserved excretion in 3 bottom of the reinforced retaining wall water hole 10 in both sides；
Wherein, the structure type is gravity type vertical retaining wall form, highly according to frame bridge rear practical barricade in place
The influence of height and hump line reinforcement system 2 determines that it is less than track strengthening system 2 20 that 3 height of reinforced retaining wall, which can usually be arranged,
~30cm, the width between two lateral retaining walls determine according to the former rubble bulkhead width of hump line 1, and 1 length of reinforced retaining wall is according to showing
Field humping track 1 is reinforced involved barricade physical length and is determined.
S3, formwork supporting plate pouring reinforcement concrete barricade reserve the spreading reinforcing bar 11 at 3 top of both sides reinforced retaining wall, spreading steel
Muscle 11 is the vertical main reinforcement of framework of steel reinforcement in reinforced retaining wall 3；
Wherein, the reserved spreading reinforcing bar 11 is higher by 3 top 30cm of reinforced retaining wall, will be connect when hump line is passed through in jacking
Long reinforcing bar 11 is conducive to smoothly pass through hump line 1 to 3 internal bend of reinforced retaining wall.
The weathering 12 on ground, weathering drainage direction and 1 rolling direction of humping track between S4, setting reinforced retaining wall 3
Unanimously, borehole cleaning is carried out to drain hole 11, filter screen is installed at 11 both ends of drain hole, prevent smaller rubble from blocking duct；
Wherein, 5 span of frame bridge be less than 30m when, the weathering 12 be single slope drainage slope or double drainage slope, when
5 span of frame bridge is set as double drainage slope when being more than 30m.Drainage grade is 0.5%, and drain hole aperture is 10cm, drain hole
Spacing is 1m, and 10 lower edge of drain hole is concordant with 12 upper surface of weathering, is discharged from drain hole convenient for the water on weathering.
S5, after prefabricated reinforced retaining wall 3 and weathering 12 reach concrete design strength, graded broken stone is loaded between barricade
4, upper surface should be smooth as possible, and height is slightly below at the top of barricade；
S6, start the jacking construction that jack 8 carries out frame bridge 5, by spreading reinforcing bar 11 to inside barricade in jack-in process
Bending；
S7, when 5 jacking of frame bridge with reinforced retaining wall 3 is to frame bridge front overhang 6 close to humping track 1, block hump line
Road 1, regulation and control jacking jack 8, reduces 7 cyclic advance of excavation face in front of jacking step-length and jacking, passes through humping track reinforcing body
It is 2；
Wherein, when the frame bridge front overhang 6 is apart from 1 5~7m of humping track, circuit is blocked, jacking step-length is adjusted to former
The 50%~80% of step-length, jacking front excavation face 7 excavate 50%~80% that drilling depth is accordingly reduced to former excavation drilling depth.
After S8, continuation jacking to frame bridge 5 in place, require to utilize spreading reinforcing bar according to 1 line style of hump line and track geometry
11 connect reinforced retaining wall 3, remove reinforcement system 2, and backfill railway ballast 9 restores humping track；
S9, car slipping experiment, the hump line car slipping operation accuracy after test reinforcing and safety.
Wherein, humping track subgrade bed position can be quickly discharged in the combination of the utility model weathering and drain hole
Water, stablize circuit；Meanwhile the more former rubble bulkhead high capacity of the vertical Reinforced Concrete Retaining Walls of gravity type, stability is good, effectively
Maintain hump line line style and track geometry.
Prefabricated barricade and filling railway ballast can influence line security to avoid in pontic rear a large amount of construction operations in place in advance, and
And jacking it is in place after can fast quick-recovery circuit, shorten the construction period with the closure of track time, greatly save cost, reduce and circuit is transported
The influence of battalion.
Several preferred embodiments of utility model have shown and described in above description, but as previously described, it should be understood that practical
It is novel to be not limited to form disclosed herein, it is not to be taken as excluding other embodiments, and can be used for various other
Combination, modification and environment, and above-mentioned introduction or the skill of related field can be passed through within the scope of the inventive concept described herein
Art or knowledge are modified.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of utility model, then
It all should be in the protection domain of utility model appended claims.
Claims (7)
1. safeguarding the subgrade reinforcing device of hump line line style in a kind of jacking bridge construction, which is characterized in that including frame bridge (5),
It is provided with frame bridge front overhang (6) in front of the frame bridge (5), the excavation soil body is provided in front of the frame bridge front overhang (6)
(7), the rear of the frame bridge (5) and bottom is provided with jacking jack (8), two is provided with above the frame bridge (5)
A reinforced retaining wall (3) being oppositely arranged；Spreading reinforcing bar (11), the excavation soil body are provided at the top of the reinforced retaining wall (3)
(7) it is provided with track strengthening system (2) on, humping track (1) is provided on the track strengthening system (2)；Reinforced retaining wall (3)
It is arranged along humping track (1) direction, is located at humping track (1) both sides；The bottom of the reinforced retaining wall (3) is provided with drain hole
(10), weathering (12), weathering (12) drainage direction and humping track (1) are provided between the reinforced retaining wall (3)
Rolling direction it is consistent, the lower edge of the drain hole (10) is concordant with the upper surface of weathering (12)；The reinforced retaining wall (3)
Between and graded broken stone (4) is filled with above the weathering (12), the height of the graded broken stone (4) is less than reinforced retaining wall (3).
2. subgrade reinforcing device according to claim 1, which is characterized in that be provided with filtering on the drain hole (10)
Net.
3. subgrade reinforcing device according to claim 1, which is characterized in that the structure type of the reinforced retaining wall (3) is
Gravity type vertical retaining wall form.
4. subgrade reinforcing device according to claim 1, which is characterized in that the reinforced retaining wall (3) is highly less than line
(2) 20~30cm of road reinforcement system.
5. subgrade reinforcing device according to claim 1, which is characterized in that the spreading reinforcing bar (11) is higher by reinforced retaining wall
(3) top 30cm.
6. subgrade reinforcing device according to claim 1, which is characterized in that frame bridge (5) span is less than or equal to 30m
When, the weathering (12) is single slope drainage slope or double drainage slope；It is set as when frame bridge (5) span is more than 30m
Double drainage slope.
7. subgrade reinforcing device according to claim 1, which is characterized in that the gradient of weathering (12) is 0.5%, is sluiced
The aperture in hole (10) is 10cm, and the spacing of drain hole (10) is 1m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820197230.5U CN208055762U (en) | 2018-02-05 | 2018-02-05 | The subgrade reinforcing device of hump line line style is safeguarded in a kind of jacking bridge construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820197230.5U CN208055762U (en) | 2018-02-05 | 2018-02-05 | The subgrade reinforcing device of hump line line style is safeguarded in a kind of jacking bridge construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208055762U true CN208055762U (en) | 2018-11-06 |
Family
ID=63993047
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820197230.5U Expired - Fee Related CN208055762U (en) | 2018-02-05 | 2018-02-05 | The subgrade reinforcing device of hump line line style is safeguarded in a kind of jacking bridge construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208055762U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086063A (en) * | 2018-02-05 | 2018-05-29 | 石家庄铁道大学 | The subgrade reinforcing device and method of hump line line style is safeguarded in a kind of jacking bridge construction |
| CN115262291A (en) * | 2022-08-09 | 2022-11-01 | 中铁第六勘察设计院集团有限公司 | Structure for embedding railway ballast retaining wall into concrete pavement and construction method |
-
2018
- 2018-02-05 CN CN201820197230.5U patent/CN208055762U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086063A (en) * | 2018-02-05 | 2018-05-29 | 石家庄铁道大学 | The subgrade reinforcing device and method of hump line line style is safeguarded in a kind of jacking bridge construction |
| CN115262291A (en) * | 2022-08-09 | 2022-11-01 | 中铁第六勘察设计院集团有限公司 | Structure for embedding railway ballast retaining wall into concrete pavement and construction method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181106 Termination date: 20190205 |
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| CF01 | Termination of patent right due to non-payment of annual fee |