CN209669907U - A kind of Karst Collapse Area peg board basement process pile foundation protection composite structure - Google Patents
A kind of Karst Collapse Area peg board basement process pile foundation protection composite structure Download PDFInfo
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- CN209669907U CN209669907U CN201822215583.6U CN201822215583U CN209669907U CN 209669907 U CN209669907 U CN 209669907U CN 201822215583 U CN201822215583 U CN 201822215583U CN 209669907 U CN209669907 U CN 209669907U
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Abstract
The utility model relates to a kind of Karst Collapse Area peg board basement process pile foundations to protect composite structure, including the armoured concrete slab below road bed, cast-in-situ bored pile has been performed below armoured concrete slab, it is provided with mortar flag stone masonry around cast-in-situ bored pile, dry-laid rubble masonry is provided with around mortar flag stone masonry.The utility model eliminates cast-in-situ bored pile by slump body and hits damage risk, relative to, all using mortar flag stone, construction method is not required to scaffolding, has saved construction investment around pile foundation relative to single pile slab structure.
Description
Technical field
The utility model belongs to transport development technical field, and in particular to a kind of Karst Collapse Area peg board basement process pile foundation
Plinth protects composite 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 it is molten it is intracavitary, molten chamber is larger when, it is naked that the later period runs the existing pile slab structure of process
The pile foundation of dew is easy to be hit by the sillar of molten top of chamber slump, forms disease, these diseases are seriously affecting railway just
Often run and considerably increase the operation maintenance expenditure of roadbed.
Utility model content
The purpose of the utility model is to provide a kind of Karst Collapse Area peg board basement process pile foundations to protect composite structure, adopts
Bored pile foundation is protected with mortar flag stone masonry, dry-laid rubble masonry structure, solves problems of the prior art, from
And guarantee the safety of pile foundation.
The technology employed by the present utility model is
A kind of Karst Collapse Area peg board basement process pile foundation protection composite structure, it is characterised in that:
Including the armoured concrete slab below road bed, cast-in-situ bored pile is performed below armoured concrete slab, drilling fills
It is provided with mortar flag stone masonry around note stake, dry-laid rubble masonry is provided with around mortar flag stone masonry.
Mortar flag stone masonry and dry-laid rubble masonry are located at cast-in-situ bored pile lower periphery.
Mortar flag stone masonry is up-small and down-big quadrangle platform body structure, and tight is in outside cast-in-situ bored pile.
Dry-laid rubble masonry is the hollow platform body structure in quadrangle, and tight is in outside mortar flag stone masonry.
Cast-in-situ bored pile and armoured concrete slab are the integral structure of one-piece casting.
The utility model has the advantage that
1, relative to single pile slab structure, cast-in-situ bored pile is eliminated by slump body and hits damage risk.
2, relative to, all using mortar flag stone, having saved construction investment around pile foundation.
3, construction method is not required to scaffolding, has saved construction investment, reduces working procedure, shortens the duration.
Detailed description of the invention
Fig. 1 is that pile foundation protects composite structure cross-sectional configuration figure.
Fig. 2 is that pile foundation protects composite structure plan view.
In figure, 1- cast-in-situ bored pile, 2- mortar flag stone masonry, 3- dry-laid rubble masonry, 4- armoured concrete slab, the ground 5-
Line, 6- solution cavity cavity, 7- road bed, 8- cutting excavation side slope line.
Specific embodiment
The utility model is described in detail With reference to embodiment.
It in the easy subsidence area location of karst intense development, is handled using pile slab structure, pile foundation passes through molten chamber, and molten chamber is larger
When, the exposed pile foundation of the later period operation existing pile slab structure of process is easy to be hit by the sillar of molten top of chamber slump, forms disease
Evil.
The utility model relates to a kind of Karst Collapse Area peg board basement process pile foundations to protect composite structure, including road bed
The armoured concrete slab 4 of 7 lower sections, has performed cast-in-situ bored pile 1 below armoured concrete slab 4, has been provided with around cast-in-situ bored pile 1
Mortar flag stone masonry 2 is provided with dry-laid rubble masonry 3 around mortar flag stone masonry 2.
Mortar flag stone masonry 2 and dry-laid rubble masonry 3 are located at 1 lower periphery of cast-in-situ bored pile.Mortar flag stone masonry 2 is upper
Small lower big quadrangle platform body structure, tight is in outside cast-in-situ bored pile 1.Dry-laid rubble masonry 3 is the hollow platform body structure in quadrangle,
Tight is in outside mortar flag stone masonry 2.Cast-in-situ bored pile 1 and armoured concrete slab 4 are the integral structure of one-piece casting.
The construction method of above-mentioned Karst Collapse Area peg board basement process pile foundation protection composite structure, comprising the following steps:
Step 1: ground is excavated to 7 or less road bed；
Step 2: cast-in-place 0.1m thickness C25 concrete leveling layer；
Step 3: the cast-in-situ bored pile 1 of armored concrete is performed；
Step 4: after the construction of cast-in-situ bored pile 1 is completed 28 days, stake is carried out non-destructive testing；
Step 5: range is built in three-dimensional space unwrapping wire mortar flag stone masonry 2 and dry-laid rubble masonry 3；
Step 6: since bottom, from inside to outside by unwrapping wire range, all from bottom to up layer of masonry masonry, until top；
Step 7: the masonry of mortar flag stone masonry 2 and dry-laid rubble masonry 3 is completed；
Step 8: the reinforcing bar of arrangement armoured concrete slab 4.
Step 9: formwork erection, pouring reinforcement concrete plate 4, sufficiently vibrating ensures the density of concrete, continuity and entirety
Property；
Step 10: it after armoured concrete slab 4 is constructed, is covered in time, moisturizing, insulated curing；
Step 11: 4 top subgrade bed filling construction of armoured concrete slab is completed.
Relative to single pile slab structure, the utility model eliminates cast-in-situ bored pile and hits damage risk by slump body.
Embodiment:
In conjunction with the normal railway DK160+519~DK160+612 Karst Subgrade foundation treatment engineering in Guizhou Province, above-mentioned Karst Collapse Area
Peg board basement process pile foundation protects the construction method of composite structure, is realized by following steps:
Step 1: ground is excavated to the following pile slab structure bottom surface of road bed or less the position 0.1m.
Step 2: cast-in-place 0.1m thickness C25 concrete leveling layer.
Step 3: performing reinforced concrete bored pile 1, and pile driving construction is completed, and reaches 80% or more to concrete strength
When, pile crown is handled, should manually be cut away from the pile crown within the scope of the 20cm of stake top face, and is removed completely, is set with meeting stake top
Meter requires, it is ensured that pile crown quality.
Step 4: after the construction of reinforced concrete bored pile 1 is completed 28 days, stake is carried out non-destructive testing.Stake is long to be less than
40m carries out pile quality detection to whole foundation piles using low strain reflected wave method；Stake is long to be greater than 40m using sound wave projective method to complete
Portion's foundation pile carries out pile quality detection.
Step 5: range is built in three-dimensional space unwrapping wire mortar flag stone masonry 2 and dry-laid rubble masonry 3 by design drawing.
Step 6: by design drawing since bottom, from inside to outside by unwrapping wire range, masonry is successively built from bottom to up, directly
To top.(this step does not need scaffolding construction, need to only take haul step at one liang)
Step 7: mortar flag stone masonry 2 and dry-laid rubble masonry 3 are finished by design drawing masonry.
Step 8: 4 reinforcing bar of armoured concrete slab is arranged by design drawing.
Step 9: formwork erection, pouring reinforcement concrete plate 4, sufficiently vibrating ensures the density of concrete, continuity and entirety
Property.
Step 10: it after armoured concrete slab 4 is constructed, should be covered in time, moisturizing, insulated curing 1~2 month.Curing period
After, it to avoid the exposure of its long-time, is influenced by temperature change, plate face covering is protected not less than the wheat straw of 5cm thickness.
Step 11: 4 top subgrade bed filling construction of armoured concrete slab.
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 faces any equivalent transformation that technical solutions of the utility model are taken, and is the claim institute of the utility model
Cover.
Claims (5)
1. a kind of Karst Collapse Area peg board basement process pile foundation protects composite structure, it is characterised in that:
Including the armoured concrete slab (4) below road bed (7), cast-in-situ bored pile has been performed below armoured concrete slab (4)
(1), it is provided with mortar flag stone masonry (2) around cast-in-situ bored pile (1), dry-laid rubble is provided with around mortar flag stone masonry (2)
Masonry (3).
2. a kind of Karst Collapse Area peg board basement process pile foundation according to claim 1 protects composite structure, feature
It is:
Mortar flag stone masonry (2) and dry-laid rubble masonry (3) are located at cast-in-situ bored pile (1) lower periphery.
3. a kind of Karst Collapse Area peg board basement process pile foundation according to claim 1 protects composite structure, feature
It is:
Mortar flag stone masonry (2) be up-small and down-big quadrangle platform body structure, tight in cast-in-situ bored pile (1) outside.
4. a kind of Karst Collapse Area peg board basement process pile foundation according to claim 3 protects composite structure, feature
It is:
Dry-laid rubble masonry (3) be the hollow platform body structure in quadrangle, tight in mortar flag stone masonry (2) outside.
5. a kind of Karst Collapse Area peg board basement process pile foundation according to claim 1 protects composite structure, feature
It is:
Cast-in-situ bored pile (1) and armoured concrete slab (4) are the integral structure of one-piece casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822215583.6U CN209669907U (en) | 2018-12-27 | 2018-12-27 | A kind of Karst Collapse Area peg board basement process pile foundation protection composite structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822215583.6U CN209669907U (en) | 2018-12-27 | 2018-12-27 | A kind of Karst Collapse Area peg board basement process pile foundation protection composite structure |
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| CN209669907U true CN209669907U (en) | 2019-11-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555146A (en) * | 2018-12-27 | 2019-04-02 | 中铁第勘察设计院集团有限公司 | Karst Collapse Area peg board basement process pile foundation protects composite structure and construction method |
-
2018
- 2018-12-27 CN CN201822215583.6U patent/CN209669907U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555146A (en) * | 2018-12-27 | 2019-04-02 | 中铁第勘察设计院集团有限公司 | Karst Collapse Area peg board basement process pile foundation protects composite structure and construction method |
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