CN209669910U - A kind of karst ground treatment crosses over the combination pile slab structure of larger molten chamber - Google Patents
A kind of karst ground treatment crosses over the combination pile slab structure of larger molten chamber Download PDFInfo
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- CN209669910U CN209669910U CN201822227959.5U CN201822227959U CN209669910U CN 209669910 U CN209669910 U CN 209669910U CN 201822227959 U CN201822227959 U CN 201822227959U CN 209669910 U CN209669910 U CN 209669910U
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Abstract
The utility model relates to the combination pile slab structures that a kind of karst ground treatment crosses over larger molten chamber, excavating cut slope first is to armoured concrete slab bottom surface, prospecting drilling is arranged by stake by design stake position, find out solution cavity distribution, the stake holes of reasonable Arrangement reinforced concrete pile, reinforced concrete pile avoids relatively large solution cavity cavity, relatively large solution cavity cavity is crossed over using reinforced concrete arch slab as armoured concrete slab, small-sized solution cavity cavity is crossed over using steel concrete plate as armoured concrete slab, construction reinforced bar concrete arch bar and steel concrete plate after laying reinforced concrete pile, and fill reinforced concrete arch slab and the above roadbed of steel concrete plate.The utility model uses the engineering structure processing being made of reinforced concrete member to cross over larger molten chamber, avoid small span pile slab structure stake it is long it is too long caused by the duration is too long and security risk increases problem, overcome security risk caused by the long too depth of stake and increase and the slow defect of construction speed.
Description
Technical field
The utility model belongs to transport development technical field, and in particular to a kind of karst ground treatment is across larger molten chamber
Combine pile slab structure.
Background technique
Karst Collapse Area railway is widely distributed, and karst cavity moves towards complicated, when crossing over molten chamber using pile slab structure, pile foundation
Plinth is difficult to avoid not passing through molten chamber.Pile foundation be located at molten intracavitary, molten chamber it is larger it is more at beading when, according to existing specification stake
Basis needs to go deep into molten bottom of chamber portion not less than 2 times of depth of stake diameter.This certainly will will cause that pile foundation is very deep, and pile foundation is deeper, mechanical
Drilling and manually digging hole will be more difficult, and machine drilling falls brill and takes place frequently, and hand excavation steps on sky, and worker falls into cavity danger,
Hand excavation also needs to divulge information, and borehole depth is slagged tap very much slowly deeply, and required working hour and cost is caused to be multiplied.These factors are tight
Ghost image rings the construction speed and security risk control of railway, is badly in need of a kind of method solution.
Utility model content
The purpose of the utility model is to provide the combination pile slab structures that a kind of karst ground treatment crosses over larger molten chamber, with solution
Certainly security risk caused by the long too depth of stake increases and the slow problem of construction speed.
The technology employed by the present utility model is
A kind of karst ground treatment crosses over the combination pile slab structure of larger molten chamber, it is characterised in that:
It is mixed including the reinforced concrete arch slab paragraph across relatively large solution cavity cavity and the reinforcing bar across small-sized solution cavity cavity
Solidifying soil plate paragraph；
Reinforced concrete arch slab paragraph includes the reinforced concrete pile and reinforced concrete arch slab of one-piece casting；
Steel concrete plate paragraph includes the reinforced concrete pile and steel concrete plate of one-piece casting.
The reinforced concrete arch slab spanning length of relatively large solution cavity cavity between 7-35m, small-sized solution cavity cavity
Steel concrete plate spanning length is not more than 7m.
Laterally upper along route: reinforced concrete arch slab paragraph reinforced concrete pile lays 3 groups, and roadbed center lays 1 group, edge
Left and right side each 5.5m in center lays 1 group, and every group is arranged by triangle or day font；Steel concrete plate paragraph reinforced concrete
Native stake lays 3, and roadbed center lays 1, lays 1 along each 5.5m of center left and right side, arranges by matrix pattern；
Longitudinally upper along route: the reinforced concrete pile of reinforced concrete arch slab paragraph is laid by actual arrangement span；Reinforcing bar
Concrete flat slab paragraph is laid by spacing 7m.
The utility model has the advantage that
The utility model uses the engineering structure processing being made of reinforced concrete member to cross over larger molten chamber, avoids small
The span pile slab structure stake long too long caused duration is too long and security risk increases problem.
Detailed description of the invention
Fig. 1 is that slab construction crosses over relatively large molten chamber skiagraph.
Fig. 2 is that Arch Bar Structure crosses over relatively large molten chamber skiagraph.
Fig. 3 is that Arch Bar Structure crosses over relatively large molten chamber reinforced concrete pile plane of arrangement figure.
In figure, 1- reinforced concrete pile, 2- reinforced concrete arch slab, 3- steel concrete plate, 4- solution cavity cavity.
Specific embodiment
The utility model is described in detail With reference to embodiment.
The utility model relates to a kind of karst ground treatment cross over larger molten chamber combination pile slab structure, construction method,
Specifically realized by following steps:
Step 1: excavating cut slope to armoured concrete slab bottom surface.
Step 2: prospecting drilling is arranged by stake by design stake position, finds out solution cavity distribution.
Step 3: according to solution cavity distribution, the stake holes of reasonable Arrangement reinforced concrete pile 1, reinforced concrete pile 1 is avoided
Relatively large solution cavity cavity 4 crosses over relatively large solution cavity cavity 4, using reinforced concrete arch slab 2 as armoured concrete slab with reinforcing bar
Concrete flat slab 3 crosses over small-sized solution cavity cavity 4 as armoured concrete slab.The armored concrete of relatively large solution cavity cavity 4
For 2 spanning length of arch bar between 7-35m, 3 spanning length of steel concrete plate of small-sized solution cavity cavity 4 is not more than 7m.
Step 4: reinforced concrete pile 1 is laid；
Laterally upper along route: 2 paragraph reinforced concrete pile 1 of reinforced concrete arch slab lays 3 groups, and roadbed center lays 1 group,
1 group is laid along each 5.5m of center left and right side, every group is arranged by triangle or day font；3 paragraph reinforcing bar of steel concrete plate is mixed
Solidifying soil stake 1 lays 3, and roadbed center lays 1, lays 1 along each 5.5m of center left and right side, arranges by matrix pattern；
Longitudinally upper along route: the reinforced concrete pile 1 of 2 paragraph of reinforced concrete arch slab is laid by actual arrangement span；Steel
3 paragraph of reinforced concrete plate is laid by spacing 7m.
Step 5: design 1 length of reinforced concrete pile, reinforced concrete pile 1 are placed in 4 bottom plate of solution cavity cavity and (refer to solution cavity sky
Bottom of chamber portion physical location) it is not less than the depth of 2 times of length of stake diameter below；The reinforced concrete pile 1 of 2 paragraph of reinforced concrete arch slab
The reinforced concrete pile 1 of long 20m or more, 3 paragraph of steel concrete plate are 20m or less long.The steel of 2 paragraph of reinforced concrete arch slab
1 pile foundation of rib concrete pile, which is chosen at bottom, does not have solution cavity cavity 4 or top plate (referring to solution cavity cavity with upper bit entity part) safety
Solution cavity cavity 4 at the top of be arranged.Reinforced concrete arch slab 2 and reinforced concrete pile 1 and steel concrete plate 3 and reinforcing bar
The equal one-piece casting of concrete-pile 1.
Step 6: construction reinforced bar concrete arch bar 2 and steel concrete plate 3；
Step 7: 3 or more roadbed of reinforced concrete arch slab 2 and steel concrete plate is filled.
Embodiment:
The normal railway DK159+945~DK160+048 Karst Subgrade foundation treatment engineering in Guizhou Province, as shown in Figure 1, former design is adopted
Solution cavity cavity is crossed over reinforced concrete pile slab construction.As shown in Fig. 2, being changed to reinforced concrete pile arch bar+plate across molten
The method of hole cavity, is realized by following steps:
Step 1: excavating cut slope to armoured concrete slab bottom surface.
Step 2: prospecting drilling is arranged by stake by former design stake position, finds out solution cavity distribution.
Step 3: according to solution cavity distribution, being handled unstable foundation, reasonable Arrangement stake holes, pile foundation evacuation
Relatively large molten chamber crosses over relatively large molten chamber with large span arch bar, and small span plate crosses over small-sized molten chamber.
Step 4: reinforced concrete pile is laid.As shown in figure 3,3 are laid along route transverse steel concrete-pile, roadbed
Center lays 1, lays 1 along each 5.5m of center left and right side.As shown in figure 3, along route longitudinal direction, reinforced concrete pile arch
Plate paragraph is laid by actual arrangement span, and plate paragraph is laid by spacing 7m.
Step 5: design armored concrete pile length, reinforced concrete pile are placed in dangerous molten bottom of chamber plate or less and are not less than
The depth of stake 2 times of length of diameter.Construction reinforced bar concrete-pile 1 simultaneously presses code requirement detection of pier foundation plinth.
Step 6: the design of reinforced concrete arch slab and plate, construction reinforced bar concrete slab are carried out.
Step 7: the above roadbed of armoured concrete slab is filled.
The utility model handles karst ground treatment across relatively large molten chamber, using reinforced concrete arch slab method
Across relatively large karst cavity, avoids long too long too long increase with security risk of caused duration of small span pile slab structure stake and ask
Topic.
The content of the utility model is not limited to cited by embodiment, and those of ordinary skill in the art are practical new by reading this
Type specification and to any equivalent transformation that technical solutions of the utility model are taken, be the claim institute of the utility model
Cover.
Claims (3)
1. the combination pile slab structure that a kind of karst ground treatment crosses over larger molten chamber, it is characterised in that:
Including reinforced concrete arch slab (2) paragraph across relatively large solution cavity cavity (4) and the steel across small-sized solution cavity cavity (4)
Reinforced concrete plate (3) paragraph；
Reinforced concrete arch slab (2) paragraph includes the reinforced concrete pile (1) and reinforced concrete arch slab (2) of one-piece casting；
Steel concrete plate (3) paragraph includes the reinforced concrete pile (1) and steel concrete plate (3) of one-piece casting.
2. a kind of karst ground treatment according to claim 1 crosses over the combination pile slab structure of larger molten chamber, feature exists
In:
Reinforced concrete arch slab (2) spanning length of relatively large solution cavity cavity (4) is between 7-35m, small-sized solution cavity cavity
(4) steel concrete plate (3) spanning length is not more than 7m.
3. a kind of karst ground treatment according to claim 1 crosses over the combination pile slab structure of larger molten chamber, feature exists
In:
Laterally upper along route: reinforced concrete arch slab (2) paragraph reinforced concrete pile (1) lays 3 groups, and roadbed center lays 1 group,
1 group is laid along each 5.5m of center left and right side, every group is arranged by triangle or day font；Steel concrete plate (3) paragraph reinforcing bar
Concrete-pile (1) lays 3, and roadbed center lays 1, lays 1 along each 5.5m of center left and right side, arranges by matrix pattern；
Longitudinally upper along route: the reinforced concrete pile (1) of reinforced concrete arch slab (2) paragraph is laid by actual arrangement span；Steel
Reinforced concrete plate (3) paragraph is laid by spacing 7m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822227959.5U CN209669910U (en) | 2018-12-27 | 2018-12-27 | A kind of karst ground treatment crosses over the combination pile slab structure of larger molten chamber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822227959.5U CN209669910U (en) | 2018-12-27 | 2018-12-27 | A kind of karst ground treatment crosses over the combination pile slab structure of larger molten chamber |
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| CN209669910U true CN209669910U (en) | 2019-11-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555148A (en) * | 2018-12-27 | 2019-04-02 | 中铁第勘察设计院集团有限公司 | The method that karst ground treatment crosses over larger molten chamber and combinations thereof pile slab structure |
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2018
- 2018-12-27 CN CN201822227959.5U patent/CN209669910U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555148A (en) * | 2018-12-27 | 2019-04-02 | 中铁第勘察设计院集团有限公司 | The method that karst ground treatment crosses over larger molten chamber and combinations thereof pile slab structure |
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