CN207062928U - The device of Soil-rock combined ground is passed through in a kind of karst area - Google Patents
The device of Soil-rock combined ground is passed through in a kind of karst area Download PDFInfo
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- CN207062928U CN207062928U CN201720991376.2U CN201720991376U CN207062928U CN 207062928 U CN207062928 U CN 207062928U CN 201720991376 U CN201720991376 U CN 201720991376U CN 207062928 U CN207062928 U CN 207062928U
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Abstract
The utility model discloses the device that Soil-rock combined ground is passed through in a kind of karst area, and it includes pile foundation（1）With grade beam（2）, it is characterised in that：Pile foundation（1）Positioned at non-Bedrock Region, grade beam（2）One end is fixed on pile foundation（1）Top, the other end are fixed on complete basement rock；When solving that karst area builds subgrade retaining wall by laying bricks or stones in the prior art, due to the engineering geological problems faced during foundation ground skewness.
Description
Technical field
The utility model belongs to subgrade strengthening technical field, more particularly to Soil-rock combined ground is passed through in a kind of karst area
Device.
Background technology
In recent years, as the development of Karst Mountain infrastructure construction, the highway construction in mountain area are more and more.Always with
Come, due to the complexity of karst area geological conditions, the diversity of geology Crack cause, result in the inhomogeneities of foundation soil,
Soil-rock combined ground becomes the common foundation form in karst area.Therefore, mountain highway foundation engineering often becomes restriction
The key factor of highway development.
The characteristics of Soil-rock combined ground is that rock and soil properties are complicated, and mechanical property difference is big between ground, foundation bearing capacity phase
Poor big, foundation deformation is uneven, easily causes significant relative settlement.In karst area, due to the property complicated and changeable of ground ground,
When highway subgrade builds retaining wall by laying bricks or stones, such Soil-rock combined ground can be usually run into.For this kind of roadbed, such as gear is directly built by laying bricks or stones
Wall, then it can bring huge potential safety hazard because of the later stage uneven subsidence of ground.Such as because of the problem again route selection, then can
New manpower, material resources and financial resources are caused to increase, the suspicion for having " wasting one's talent on a petty job ", and new route selection road faces the problem of same unavoidably.Therefore,
How safety, it is simple, effectively pass through such composition of rock and soil roadbed, be that karst area carries out needs during basement process to retaining wall foundation
Solve the problems, such as.
Utility model content
The technical problems to be solved in the utility model：The device that Soil-rock combined ground is passed through in a kind of karst area is provided, with
Solve when karst area builds subgrade retaining wall by laying bricks or stones in the prior art, due to the engineering that is faced during foundation ground skewness
Geological Problems.
Technical solutions of the utility model：
The device of Soil-rock combined ground is passed through in a kind of karst area, and it includes pile foundation and grade beam, and pile foundation is located at non-basement rock
Area, grade beam one end are fixed at the top of pile foundation, and the other end is fixed on complete basement rock.
Insertion stable basement rock depth in pile foundation bottom is more than or equal to 0.5 meter, and the length in soil layer is more than or equal to 3 meters.
The length that the vertical muscle of pile foundation stretches into grade beam is 0.7 meter, and the hook length for indulging muscle is 200 millimeters；The protection of reinforcing bar
50 millimeters~70 millimeters of thickness degree.
The beneficial effects of the utility model：
The utility model sets grade beam to be connected with pile foundation by setting pile foundation in non-Bedrock Region on ground, will be non-
The load of Bedrock Region is transferred in lower stabilizer basement rock, and a stake, the people of beam composition are finally formed on Soil-rock combined ground
Building site base；When solving highway in karst area roadbed and building retaining wall by laying bricks or stones, due to foundation soil skewness, it is impossible to directly in foundation trench
Build the engineering problem faced during barricade by laying bricks or stones.
Brief description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is pile foundation schematic cross-sectional view of the present utility model.
Embodiment
The device of Soil-rock combined ground is passed through in a kind of karst area（See Fig. 1）, it includes pile foundation 1 and grade beam 2, pile foundation 1
Positioned at non-Bedrock Region, the one end of grade beam 2 is fixed on the top of pile foundation 1, and the other end is fixed on complete basement rock.
In the present embodiment, a length of 10 meters, a width of 1.9 meters of the Foundation trench that need to be passed through.
Grade beam is identical with the planar dimension of barricade foundation trench；In the present embodiment, 2 wide 1.9 meters of grade beam is long 10 meters.
The insertion stable depth of basement rock 3 in the bottom of pile foundation 1 is more than or equal to 0.5 meter, and length of the pile foundation 1 in soil layer 4 is more than or equal to 3
Rice.Purpose is to through the poor soil layer of bearing capacity, allow pile foundation to fall on stable supporting course, ensure the stabilization of pile foundation
Property.
The length that the vertical muscle 6 of pile foundation 1 stretches into grade beam 2 is 0.7 meter, and the hook length for indulging muscle 6 is 200 millimeters；Reinforcing bar
50 millimeters~70 millimeters of protective layer thickness.Pile foundation is set to be connected firmly with grade beam 2.
The construction method of the device of Soil-rock combined ground is passed through in a kind of described karst area, and it includes：
Caisson is opened in step 1, the foundation trench after the excavation of non-Bedrock Region；
Steel reinforcement cage is launched in step 2, past hole stake, vertical muscle 6 elevates above the soil or 0.7 meter of the height at foundation trench bottom, hook length 200
Millimeter；
Step 3, foundation trench is cleared up and levelling；It is described that cleaning and levelling is carried out to foundation trench, allow foundation trench base plane water
Flat, absolute altitude is consistent with the absolute altitude at the top of pile foundation 1.Debris is cleared up, it is horizontal when ensureing grade beam with being connected at the top of horizontal pile foundation, do not incline
Tiltedly, do not fall through, ensure the consistent of total and coordinate.
Step 4, the structure design size for pressing grade beam 2 and distributed steel requirement carry out formwork；
Step 5, with C25 concretings pile body and grade beam, curing concrete, the making of finishing device.
Claims (3)
1. the device of Soil-rock combined ground is passed through in a kind of karst area, it includes pile foundation（1）With grade beam（2）, it is characterised in that：
Pile foundation（1）Positioned at non-Bedrock Region, grade beam（2）One end is fixed on pile foundation（1）Top, the other end are fixed on complete basement rock.
2. the device of Soil-rock combined ground is passed through in a kind of karst area according to claim 1, it is characterised in that：Pile foundation
（1）The stable basement rock of bottom insertion（3）Depth is more than or equal to 0.5 meter, in soil layer（4）In length be more than or equal to 3 meters.
3. the device of Soil-rock combined ground is passed through in a kind of karst area according to claim 1, it is characterised in that：Pile foundation
（1）Vertical muscle（6）Stretch into grade beam（2）Length be 0.7 meter, indulge muscle（6）Hook length be 200 millimeters；The protection of reinforcing bar
50 millimeters~70 millimeters of thickness degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720991376.2U CN207062928U (en) | 2017-08-09 | 2017-08-09 | The device of Soil-rock combined ground is passed through in a kind of karst area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720991376.2U CN207062928U (en) | 2017-08-09 | 2017-08-09 | The device of Soil-rock combined ground is passed through in a kind of karst area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207062928U true CN207062928U (en) | 2018-03-02 |
Family
ID=61520242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720991376.2U Active CN207062928U (en) | 2017-08-09 | 2017-08-09 | The device of Soil-rock combined ground is passed through in a kind of karst area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207062928U (en) |
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2017
- 2017-08-09 CN CN201720991376.2U patent/CN207062928U/en active Active
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