CN215562555U - Soft soil foundation combined reinforcement structure - Google Patents
Soft soil foundation combined reinforcement structure Download PDFInfo
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- CN215562555U CN215562555U CN202121513811.3U CN202121513811U CN215562555U CN 215562555 U CN215562555 U CN 215562555U CN 202121513811 U CN202121513811 U CN 202121513811U CN 215562555 U CN215562555 U CN 215562555U
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Abstract
The utility model discloses a soft soil foundation combined reinforcement structure, and belongs to the technical field of foundation reinforcement. The problem of among the prior art cement soil mixing pile intensity low, bearing capacity is poor, leads to the ground to subside is solved. The utility model comprises a plurality of rows of pile foundations, wherein each row of pile foundation comprises a plurality of cement soil mixing piles (1) and a plurality of steel pipe piles (2), the cement soil mixing piles (1) are mutually overlapped, the steel pipe piles (2) are positioned in the cement soil mixing piles (1), and the adjacent steel pipe piles (2) are arranged at intervals. According to the utility model, the steel pipe piles are inserted into the cement soil mixing piles, so that the strength of the cement soil mixing piles is improved, the bearing capacity of the cement soil mixing piles is increased, the foundation settlement is prevented, and one steel pipe pile can be arranged at intervals among a plurality of cement soil mixing piles, so that the cost is saved as far as possible on the premise of meeting the requirement of the bearing capacity of the foundation. The method is suitable for reinforcing the soft soil foundation.
Description
Technical Field
The utility model belongs to the technical field of foundation reinforcement, and particularly relates to a soft soil foundation combined reinforcement structure.
Background
A cement-soil mixing pile is used to reinforce the saturated soft clay foundation, and features that cement is used as solidifying agent, the deep soft soil and solidifying agent are forcibly mixed by special mixing machine, and the solidified agent and soft soil are chemically and physically reacted to form a high-quality foundation with integrity, water stability and strength.
The cement-soil mixing pile is simple in construction method, small in influence on the surrounding environment and low in construction cost, but the cement-soil mixing pile also has some defects, and is low in self strength, so that the bearing capacity is low, large upper load is difficult to bear, the cement-soil mixing pile is easy to deform in a compression mode, foundation settlement is caused, and the service life and the structural safety of a building structure are influenced.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems of low strength and poor bearing capacity of a cement-soil mixing pile in the prior art and causing foundation settlement, the utility model provides a soft soil foundation combined reinforcement structure, which aims to: the bearing capacity of the cement soil mixing pile on the soft soil foundation is improved.
The technical scheme adopted by the utility model is as follows:
the utility model provides a soft soil foundation unites reinforced structure, includes several rows of pile foundations, and every row of pile foundation includes several cement mixing pile and several steel-pipe pile, overlap joint each other between the cement mixing pile, the steel-pipe pile is located the inside of cement mixing pile, and the interval sets up between the adjacent steel-pipe pile.
After the technical scheme is adopted, the steel pipe piles are inserted into the cement mixing piles, so that the strength of the cement mixing piles is improved, the bearing capacity of the cement mixing piles is increased, the foundation is prevented from settling, the steel pipe piles can be arranged at intervals among the plurality of cement mixing piles, and the cost is saved as far as possible on the premise of meeting the requirement of the bearing capacity of the foundation.
Preferably, the outer side of the steel pipe pile is provided with a spiral protrusion, the spiral protrusion is made of a steel plate, and the width of the spiral protrusion is not less than 5 cm.
After adopting this preferred scheme, during the steel-pipe pile construction, provide pushing down force and revolving force through construction machinery, the steel-pipe pile reaches the settlement position more easily, and the bellied setting of spiral can improve the bonding strength of steel-pipe pile and soil cement mixing pile moreover, makes soil cement mixing pile and steel-pipe pile be connected inseparabler, reaches the effect of common stress.
Preferably, a plurality of strip-shaped bulges are arranged on the outer side of the steel pipe pile along the length direction of the steel pipe pile, and the strip-shaped bulges are uniformly distributed along the radial direction of the steel pipe pile.
After adopting this preferred scheme, rectangular shape arch can improve the intensity of steel-pipe pile self, prevents that it from appearing warping at hammering or pushing down the in-process to can increase the area of contact of steel-pipe pile and cement mixing pile, thereby improve bonding strength.
Preferably, a plurality of cross-shaped supporting structures are arranged inside the steel pipe pile, and the cross-shaped supporting structures are welded and fixed with the inner arm of the steel pipe pile.
After the preferable scheme is adopted, the strength of the steel pipe pile can be further improved by the cross-shaped support, and the steel pipe pile is prevented from deforming.
Preferably, the cross-shaped supporting structure is formed by welding two steel plates, the width of each steel plate is not less than 5cm, the cross section of each steel plate is wedge-shaped, the thickness of the lower part of each steel plate is small, and the thickness of the upper part of each steel plate is large.
After adopting this preferred scheme, the cross-section sets up to the wedge, can reduce the steel-pipe pile and push down the resistance that the in-process cross support received, both reached the effect of province, prevent again that the cross support from receiving too big power and destroyed, prevent that the steel-pipe pile from receiving the damage.
Preferably, the steel pipe pile is filled with concrete.
After the preferable scheme is adopted, the bearing capacity of the foundation reinforcing structure can be further improved, and the foundation settlement is prevented.
Preferably, the width of the lap joint between adjacent cement mixing piles is not less than 20 cm.
Preferably, the outer side of the steel pipe pile is provided with an anticorrosive coating.
After the preferable scheme is adopted, the steel pipe pile is not easy to corrode, and the durability of the foundation reinforcing structure can be improved.
Preferably, the utility model also comprises a waterproof curtain, wherein the waterproof curtain is positioned on one side of the groundwater in the positions of the rows of pile foundations.
Because the groundwater velocity of flow in some areas is very fast (for example river region), during cement mixing stake construction, cement is taken away by rivers easily, influences the effect of ground reinforcement, adopts this preferred scheme after, can reduce the groundwater velocity in ground reinforcement region to improve ground reinforcement effect.
Preferably, the waterproof curtain is a steel sheet pile waterproof curtain.
After the preferable scheme is adopted, the steel sheet piles can be recycled after the foundation is solidified, and the cost is saved.
In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:
1. through inserting the steel-pipe pile in the soil cement mixing pile, make the intensity of soil cement mixing pile improve, increased the bearing capacity of soil cement mixing pile, prevent that the ground from subsiding, but several soil cement mixing pile sets up a steel-pipe pile in addition at an interval, practice thrift the cost as far as possible under the prerequisite that satisfies the ground bearing capacity requirement.
2. The steel-pipe pile outside sets up the spiral arch, and the steel-pipe pile construction is easier, and the spiral arch can improve the joint strength of steel-pipe pile and cement mixing pile moreover, makes cement mixing pile and steel-pipe pile be connected inseparabler, reaches the effect of common stress.
3. The steel-pipe pile outside sets up rectangular shape arch can improve the intensity of steel-pipe pile self, prevents that it from appearing warping at hammering or pushing down the in-process to can increase the area of contact of steel-pipe pile and cement mixing pile, thereby improve bonding strength.
4. The cross-shaped support is arranged inside the steel pipe pile, so that the strength of the steel pipe pile can be further improved, and the steel pipe pile can be prevented from deforming.
5. The cross-shaped supporting section is wedge-shaped, so that the resistance of the cross-shaped support of the steel pipe pile in the pressing process can be reduced, the effect of saving labor is achieved, the cross-shaped support is prevented from being damaged due to too much force, and the steel pipe pile is prevented from being damaged.
6. The inside packing of steel-pipe pile has the concrete, can further improve foundation reinforced structure's bearing capacity, prevents the emergence that the ground subsides.
7. The outside and the inboard of steel-pipe pile all are provided with anticorrosive coating, and the steel-pipe pile is difficult to be corroded, can improve foundation stabilization structure's durability.
8. A waterproof curtain is arranged on one side of the upper stream of the underground water, so that the flow speed of the underground water in a foundation stabilization area can be reduced, and the foundation stabilization effect is improved.
9. The waterproof curtain is a steel sheet pile waterproof curtain, and after the foundation is solidified, the steel sheet pile can be recycled, so that the cost is saved.
Drawings
The utility model will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural view of example 1;
fig. 2 is a schematic structural view of the steel pipe pile in example 1;
FIG. 3 is a schematic structural view of example 2;
FIG. 4 is a schematic structural view of embodiment 3;
fig. 5 is an elevational view of the present invention.
The concrete pile comprises 1-cement soil mixing pile, 2-steel pipe pile, 3-concrete, 4-cross support, 5-spiral protrusion and 6-strip protrusion.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
The present invention is described in detail below with reference to fig. 1-5.
Example 1
The utility model provides a soft soil foundation unites reinforced structure, includes several rows of pile foundations, and every row of pile foundation includes several cement mixing pile 1 and several steel-pipe pile 2, overlap joint each other between the cement mixing pile 1, the overlap joint width is 20 cm. As shown in fig. 1, the steel pipe piles 2 are positioned inside the soil cement mixing piles 1, and one soil cement mixing pile 1 is spaced between adjacent steel pipe piles 2. The steel pipe piles 2 in adjacent rows are arranged in a staggered mode.
As shown in fig. 2, in the present embodiment, a spiral protrusion 5 is provided on the outer side of the steel pipe pile 2, and the spiral protrusion 5 is made of a steel plate having a width of 5cm and a thickness of 1 cm. The two ends of the steel pipe pile 2 are arranged to be socket joint structures, when two adjacent steel pipe piles are connected, the lower end of the upper steel pipe pile is inserted into the upper end of the lower steel pipe pile, and then the upper steel pipe pile and the lower steel pipe pile are connected in a welding mode, and sealing and anti-corrosion treatment are conducted at the welding position.
In this embodiment, the outer side and the inner side of the steel pipe pile 2 are both provided with an anticorrosive coating.
In this embodiment, joint reinforced structure still includes the waterproof curtain, the waterproof curtain is located the upper reaches one side of several rows of pile foundation position groundwater for reduce the groundwater flow velocity of pile foundation position.
In this embodiment, the waterproof curtain is a steel sheet pile waterproof curtain, and after the foundation stabilization construction is completed, the steel sheet pile is recovered. In another embodiment, the waterproof curtain can take other forms, and is determined according to engineering geological conditions.
Example 2
The utility model provides a soft soil foundation unites reinforced structure, includes several rows of pile foundations, and every row of pile foundation includes several cement mixing pile 1 and several steel-pipe pile 2, overlap joint each other between the cement mixing pile 1, the overlap joint width is 25 cm. The steel pipe piles 2 are located inside the cement soil mixing piles 1, and two cement soil mixing piles 1 are arranged between every two adjacent steel pipe piles 2.
As shown in fig. 3, in the present embodiment, a plurality of elongated protrusions 6 are disposed on the outer side of the steel-pipe pile 2 along the length direction of the steel-pipe pile 2, and the elongated protrusions 6 are uniformly distributed along the radial direction of the steel-pipe pile 2.
In this embodiment, the inside of each section of steel-pipe pile 2 is provided with three cross bearing structures 4, cross bearing structures 4 and the inner arm welded fastening of steel-pipe pile 2.
In this embodiment, the cross-shaped support structure 4 is formed by welding two steel plates, the width of each steel plate is 5cm, the cross section of each steel plate is wedge-shaped, the thickness of the lower part of each steel plate is 2-4mm, and the thickness of the upper part of each steel plate is 10-20 mm.
Example 3
The technical scheme of the embodiment is basically the same as that of the embodiment 2, except that the steel pipe pile 2 is arranged at intervals of three cement mixing piles 1, concrete 3 is filled in the steel pipe pile 2, and the concrete 3 is C20 concrete. In another embodiment, the spacing distance of the steel pipe piles 2 may be set according to the geological conditions of the project.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
Claims (10)
1. The utility model provides a soft soil foundation unites reinforced structure which characterized in that: including several rows of pile foundations, every row of pile foundation includes several soil cement mixing pile (1) and several steel-pipe pile (2), overlap joint each other between soil cement mixing pile (1), steel-pipe pile (2) are located the inside of soil cement mixing pile (1), and the interval sets up between adjacent steel-pipe pile (2).
2. The soft soil foundation joint reinforcement structure of claim 1, wherein: the outer side of the steel pipe pile (2) is provided with a spiral protrusion (5), the spiral protrusion (5) is made of steel plates, and the width of the spiral protrusion is not less than 5 cm.
3. The soft soil foundation joint reinforcement structure of claim 1, wherein: the steel-pipe pile is characterized in that a plurality of strip-shaped bulges (6) are arranged on the outer side of the steel-pipe pile (2) along the length direction of the steel-pipe pile (2), and the strip-shaped bulges (6) are uniformly distributed along the radial direction of the steel-pipe pile (2).
4. The soft soil foundation joint reinforcement structure of claim 3, wherein: the steel-pipe pile (2) is characterized in that a plurality of cross-shaped supporting structures (4) are arranged inside the steel-pipe pile (2), and the cross-shaped supporting structures (4) are welded and fixed with the inner arm of the steel-pipe pile (2).
5. The soft soil foundation joint reinforcement structure of claim 4, wherein: the cross-shaped supporting structure (4) is formed by welding two steel plates, the width of each steel plate is not less than 5cm, the cross section of each steel plate is wedge-shaped, the thickness of the lower portion of each steel plate is small, and the thickness of the upper portion of each steel plate is large.
6. The soft soil foundation joint reinforcement structure of claim 1, wherein: the steel pipe pile (2) is filled with concrete (3).
7. The soft soil foundation joint reinforcement structure of claim 1, wherein: the overlapping width between the adjacent cement soil mixing piles (1) is not less than 20 cm.
8. The soft soil foundation joint reinforcement structure of claim 1, wherein: and the outer side and the inner side of the steel pipe pile (2) are both provided with an anticorrosive coating.
9. The soft soil foundation joint reinforcement structure of claim 1, wherein: the waterproof curtain is located on one side of the upper stream of underground water at the positions of the rows of pile foundations.
10. The soft soil foundation joint reinforcement structure of claim 9, wherein: the waterproof curtain is a steel sheet pile waterproof curtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121513811.3U CN215562555U (en) | 2021-07-05 | 2021-07-05 | Soft soil foundation combined reinforcement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121513811.3U CN215562555U (en) | 2021-07-05 | 2021-07-05 | Soft soil foundation combined reinforcement structure |
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| Publication Number | Publication Date |
|---|---|
| CN215562555U true CN215562555U (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121513811.3U Active CN215562555U (en) | 2021-07-05 | 2021-07-05 | Soft soil foundation combined reinforcement structure |
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| CN (1) | CN215562555U (en) |
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2021
- 2021-07-05 CN CN202121513811.3U patent/CN215562555U/en active Active
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