CN215801560U - Steel sheet pile and soil cement mixing pile wall combination supporting construction - Google Patents
Steel sheet pile and soil cement mixing pile wall combination supporting construction Download PDFInfo
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- CN215801560U CN215801560U CN202121263902.6U CN202121263902U CN215801560U CN 215801560 U CN215801560 U CN 215801560U CN 202121263902 U CN202121263902 U CN 202121263902U CN 215801560 U CN215801560 U CN 215801560U
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Abstract
The utility model discloses a steel sheet pile and cement soil mixing pile wall combined supporting structure which comprises a steel sheet pile group, a first cement soil mixing pile group, an anchoring assembly and an anchor rod, wherein the steel sheet pile group is arranged on the steel sheet pile group; the steel sheet pile group is formed by connecting a plurality of steel sheet piles in parallel and is fixed in a hard soil layer by the vertical anchor in the bottom of the steel sheet pile group, the first cement soil mixing pile group is formed by mutually overlapping a plurality of cement soil mixing piles and is fixedly connected with the steel sheet pile group by depending on the cohesive force of cement soil, the anchoring assembly is fixed on the ground, and the steel sheet pile group, the first cement soil mixing pile group and the anchoring assembly are sequentially fixed in a series connection mode through the anchor rod. The plate plane formed by the steel plate pile group is used as an outermost protective barrier, the first soil cement mixing pile group is manufactured by utilizing foundation pit soil, all piles of the first soil cement mixing pile group are mutually overlapped to form a grid-shaped whole and are connected to the inner side of the steel plate pile group to enhance the rigidity and the weight of the steel plate pile group, the steel plate pile group and the first soil cement mixing pile group are connected to an anchoring assembly through anchor rods, and the horizontal resistance and the stability of a supporting structure are improved.
Description
Technical Field
The utility model belongs to the field of supporting engineering of foundation pits, sheet pile wharfs, retaining walls and the like, and particularly relates to a combined supporting structure of a steel sheet pile and a cement-soil mixed pile wall.
Background
When facilities such as a sheet pile wharf, a retaining wall or a foundation pit are built, a supporting structure needs to be adopted for reinforcement and protection along the edge of the supporting structure. The supporting structure is formed by splicing and combining pile bodies. The pile bodies commonly used for forming the supporting structure mainly comprise steel sheet piles and cement soil mixing piles.
The steel sheet pile has the advantages of high tensile strength, reliable engineering quality, high construction speed and the like, but the steel sheet pile is completely adopted for supporting, so that larger horizontal deformation is easy to occur.
The cement soil mixing pile is formed by mixing and stirring the curing agent and the original foundation soil, the foundation soil is utilized to the maximum extent, and the gravity of the reinforced foundation soil is basically unchanged. However, the cement soil mixing pile has the problems of low tensile strength and shear strength, uneven pile body strength and the like. If the cement-soil mixing pile is adopted for supporting, higher safety factor is needed during design.
In summary, there is a need for a structure combining a steel sheet pile and a cement mixing pile, which can make up for the defects of a combined supporting structure formed by two piles, thereby saving the consumption, reducing the construction cost and ensuring the strength of the supporting structure.
Disclosure of Invention
The utility model aims to provide a combined supporting structure of a steel sheet pile and a cement-soil mixed pile wall, which combines the advantages of the steel sheet pile and the cement-soil mixed pile wall and is reinforced by an anchoring wall. Not only reduces the manufacturing cost, but also has enough structural strength.
The utility model is realized by the following technical scheme:
a combined supporting structure of a steel plate pile and a cement-soil mixed pile wall comprises a steel plate pile group, a first cement-soil mixed pile group, an anchoring assembly and an anchor rod; the steel sheet pile group comprises a plurality of steel sheet piles which are connected in parallel and is fixed in a hard soil layer by a vertical anchor at the bottom of the steel sheet pile group, the first soil cement mixing pile group comprises a plurality of soil cement mixing piles which are mutually overlapped and depends on the cohesive force of soil cement and the steel sheet pile group fixed connection, the anchoring component is fixed on the ground, and the anchor rod is used for sequentially connecting and fixing the steel sheet pile group and the anchoring component in series.
Through the scheme, the utility model at least obtains the following technical effects:
the steel sheet pile is used as the outer layer protection, the advantage of high tensile strength of the steel sheet pile is fully exerted, and the first cement soil mixing piles which are mutually overlapped form a grid-shaped support body to be connected to the inner side of the steel sheet pile. The supporting whole body formed by the steel plate pile group and the first cement mixing pile group not only ensures that the surface layer has enough tensile strength to avoid cracking and damage, but also promotes the horizontal resistance of the whole body. On this basis, the support that constitutes with first soil cement mixing pile group is connected the whole with fixing on anchoring assembly in order to promote stability through the stock, avoids steel pipe pile group to take place to buckle or misplace under the effect of horizontal impact force, and then makes whole supporting construction produce great horizontal displacement.
Preferably, the anchoring assembly comprises an anchoring wall and a second cement mixing pile group; the second cement-soil mixing pile group is formed by mutually overlapping a plurality of cement-soil mixing assemblies, and the second cement-soil mixing piles are positioned between the first cement-soil mixing piles and the retaining wall and are fixedly connected with the retaining wall.
Preferably, the anchor assembly further comprises a third soil cement mixing pile set; the third soil cement mixing pile group is formed by mutually overlapping a plurality of soil cement mixing assemblies, and is positioned below the retaining wall.
Preferably, a gravel cushion layer is arranged between the anchoring wall and the third cement-soil mixing pile in a cushioning mode.
Preferably, two adjacent steel sheet piles are fixedly connected through a connecting locking notch, and a plurality of steel sheet piles are arranged in a linear shape in the horizontal direction to form a single-layer panel structure.
Preferably, each steel sheet pile is a Z-shaped steel sheet pile.
The utility model has the beneficial effects that:
the first cement mixing pile group and the steel plate pile group are connected to form a supporting structure, and then the anchor rods and the anchoring assemblies are used for position reinforcement. The plate plane formed by the steel plate pile group is used as an outermost protective barrier, local materials are used for manufacturing the first cement soil mixing pile group by using foundation pit soil, piles of the first cement soil mixing pile group are mutually overlapped to form a grid-shaped whole and are connected to the inner side of the steel plate pile group to enhance the rigidity and the weight of the steel plate pile group, and finally the steel plate pile group and the first cement soil mixing pile group are connected to an anchoring assembly through anchor rods to be reinforced, so that the horizontal resistance and the stability of a supporting structure are improved.
Drawings
Fig. 1 is a side sectional view of a combined supporting structure of a steel sheet pile and a cement-mixed pile wall according to an embodiment of the present invention.
Fig. 2 is a top view of a combined supporting structure of a steel sheet pile and a cement-mixed pile wall provided in an embodiment of the present invention.
Fig. 3 is a schematic view of a bolt connection state provided in an embodiment of the present invention.
Legend:
1, steel plate pile group; 2, a first soil cement mixing pile group; 3 a second soil cement mixing pile group; 4, a third cement soil mixing pile group; 5, anchoring the bolt; 6 anchoring the wall; 7 a gravel cushion layer; 8, locking the notch;
Detailed Description
The utility model is further illustrated by the following figures and examples.
Example 1:
as shown in fig. 1, 2 and 3, the present embodiment provides a combined supporting structure of a steel sheet pile and a cement-soil mixed pile wall, which includes a steel sheet pile group 1, a first cement-soil mixed pile group, an anchoring assembly and an anchor rod 5. The steel sheet pile group 1 is a single-layer plate structure formed by connecting a plurality of steel sheet piles through locking ports 8, and is vertically anchored into a hard soil layer to serve as an outermost barrier of a harbor basin, a foundation pit or a retaining wall. And manufacturing cement-soil mixing piles by using foundation pit soil excavated from local materials on the inner side of the steel sheet pile, and mutually overlapping to form a first cement-soil mixing pile group 2, wherein the steel sheet pile group 1 and the first cement-soil mixing pile group 2 are formed into a whole through the bonding force of cement soil. After the first soil cement mixing pile group 2 is combined with the steel plate pile group 1, the overall thickness, rigidity and weight are increased, and the overall horizontal resistance is improved. And then, on the basis of an anchoring assembly consisting of the anchoring wall 6, the second cement soil mixing pile group 3 and the third cement soil mixing pile group 4, the steel plate pile group 1 and the first cement soil mixing group are connected to the anchoring pile group through the anchor rods 5, so that the overall stability of the supporting structure is enhanced. The anchoring wall 6 is arranged in the land range on the inner side of the steel plate pile group 1, in order to avoid sinking or shifting of the anchoring wall 6 caused by the problem of ground settlement, a third cement soil mixing pile group 4 is buried in a soil layer below the anchoring wall 6 to serve as a foundation, the third cement soil mixing pile group 4 is formed by lapping cement soil mixing piles made of foundation soil, and the foundation soil is locally obtained from waste soil when a foundation, a harbor basin or a foundation pit is excavated in a construction area. And a gravel cushion layer 7 is laid at the top end of the third cement-soil mixing pile, a smooth installation plane is provided, the bearing capacity is improved, and the influence on the stability of the anchoring wall 6 caused by the damage or irregularity on the top end of the third cement-soil mixing pile group 4 is avoided. The second soil cement mixing pile group 3 is also formed by overlapping soil cement mixing piles made of foundation soil. The second soil cement mixing pile group 3 is arranged between the anchoring wall 6 and the steel plate pile group 1 and is fixed with the anchoring wall 6 through the cohesive force of the soil cement, the thickness, the rigidity and the weight of the anchoring wall 6 are enhanced, the situation that the anchoring wall 6 inclines or slides is avoided, and the stability of the supporting structure is guaranteed.
It is worth mentioning that the anchoring wall 6 is cast of C30 concrete. The anchor rod 5 is a long rod structure formed by pouring reinforced concrete, a screw rod extends out of the rod head of the anchor rod and is matched with double nuts, and the screw rod is used for penetrating through holes drilled in the steel plate pile group 1 and each cement soil mixing pile group or the anchoring wall 6 and then is screwed and fixed by the double nuts. Realize dismantling connection structure, simplify the construction procedure and raise the efficiency. And can change the stock 5 of different length or change the tractive dynamics to steel sheet pile group 1 and first soil cement mixing pile group 2 through the fastening degree of adjusting two nuts according to the construction environment. Each steel sheet pile is a Z-shaped steel sheet pile, so that a plurality of protruding stupefied structures are formed on the surface formed by the steel sheet pile group 1, the structural strength in the horizontal direction is enhanced, the bending resistance is improved, and the risk of bending deformation of the steel sheet pile group 1 is reduced.
Example 2:
as shown in fig. 1, fig. 2 and fig. 3, the present embodiment provides a method for constructing a combination of a steel sheet pile and a soil cement mixing pile, based on embodiment 1, and the method includes the following steps:
the method comprises the following steps: leveling the field, defining the construction area of the first cement soil mixing pile group 2 according to the preset position of the supporting structure, measuring and determining the position and the setting sequence of each cement soil mixing pile in the construction area, and then sequentially constructing the cement soil mixing piles by taking foundation soil obtained from local materials as a material, so that the edge parts of two adjacent cement soil mixing piles are overlapped to form a mutual lap joint connection mode, and the lap joint length is more than or equal to 15 cm.
Step two: after the cement-soil mixing piles of the first cement-soil mixing pile group 2 are all constructed, steel sheet piles are sequentially driven into the cement-soil mixing pile group 2 along the outer edge of the first cement-soil mixing pile group before the cement-soil mixing pile is hardened, the steel sheet piles penetrate through the edge of the cement-soil mixing pile from top to bottom and are anchored into a hard soil layer at the bottom to achieve a fixing effect, two adjacent steel sheet piles are connected through the locking notch 8 in a buckling mode, and a single-layer steel sheet pile group 1 barrier layer is formed on the outer layer of the first cement-soil mixing pile.
Step three: and determining the setting position of the anchoring wall 6 according to the preset position of the first cement soil mixing pile group 2, excavating a foundation pit, implementing the construction of the third cement soil mixing pile group 4 in the foundation pit, and paving a gravel cushion layer 7 and pouring the anchoring wall 6 after each cement soil mixing pile of the third cement soil mixing pile group 4 is hardened.
Step four: and determining the position of the second cement-soil mixing pile group 3 according to the position of the anchoring wall 6 and constructing a cement-soil mixing pile, so that the second cement-soil mixing pile group 3 and the anchoring wall 6 are adhered and fixed into a whole through the adhesive force of concrete or cement.
Step four: excavation foundation ditch or harbor pond to the degree of depth department of predetermined stock 5 in layers, adopt 5 rig cooperations of stock to carry out the trompil construction on steel sheet pile group 1, first soil cement mixing pile group 2, second soil cement mixing pile group 3 and anchoring wall 6, clear hole and inspection back after the trompil finishes, it is fixed with the steel sheet pile that first soil cement mixing pile group 2 is passed in proper order with the one end of stock 5 again, the other end passes second soil cement mixing pile group 3 in proper order and closes anchoring wall 6 fixedly, carry out the slip casting to stock 5 at last and consolidate.
Step five: and after all the cement-soil mixing pile groups, the anchor rods 5 and the anchoring wall 6 are hardened and meet the strength requirement, continuously excavating the foundation pit or the harbor basin.
Various technical features in the above embodiments may be arbitrarily combined as long as there is no conflict or contradiction in the combination between the features, but is limited to the space and is not described one by one.
The present invention is not limited to the above-described embodiments, and various changes and modifications of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a steel sheet pile and soil cement mixing pile wall combination supporting construction which characterized in that: the anchor pile comprises a steel plate pile group, a first cement mixing pile group, an anchoring assembly and an anchor rod; the steel sheet pile group comprises a plurality of steel sheet piles which are connected in parallel and is fixed in a hard soil layer by a vertical anchor at the bottom of the steel sheet pile group, the first soil cement mixing pile group comprises a plurality of soil cement mixing piles which are mutually overlapped and depends on the cohesive force of soil cement and the steel sheet pile group fixed connection, the anchoring component is fixed on the ground, and the anchor rod is used for sequentially connecting and fixing the steel sheet pile group and the anchoring component in series.
2. The combined supporting structure of the steel sheet pile and the cement-soil mixing pile wall according to claim 1, which is characterized in that: the anchoring assembly comprises an anchoring wall and a second cement mixing pile group; the second soil cement mixing pile group is formed by mutually overlapping a plurality of soil cement mixing assemblies, and the second soil cement mixing pile is positioned between the first soil cement mixing pile and the retaining wall.
3. The combined supporting structure of the steel sheet pile and the cement-soil mixing pile wall according to claim 2, characterized in that: the anchor assembly further comprises a third set of cement mixing piles; the third soil cement mixing pile group is formed by mutually overlapping a plurality of soil cement mixing assemblies, and is positioned below the retaining wall.
4. The combined supporting structure of the steel sheet pile and the cement-soil mixing pile wall according to claim 1, which is characterized in that: and a gravel cushion layer is also arranged between the anchoring wall and the third cement-soil mixing pile.
5. The combined supporting structure of the steel sheet pile and the cement-soil mixing pile wall according to claim 1, which is characterized in that: two adjacent steel sheet piles are fixedly connected through connecting locking notches, and a plurality of steel sheet piles are arranged in a linear mode in the horizontal direction to form a single-layer panel structure.
6. The combined supporting structure of the steel sheet pile and the cement-soil mixing pile wall according to claim 1, which is characterized in that: each steel sheet pile is a Z-shaped steel sheet pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121263902.6U CN215801560U (en) | 2021-06-03 | 2021-06-03 | Steel sheet pile and soil cement mixing pile wall combination supporting construction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121263902.6U CN215801560U (en) | 2021-06-03 | 2021-06-03 | Steel sheet pile and soil cement mixing pile wall combination supporting construction |
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| CN215801560U true CN215801560U (en) | 2022-02-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960677A (en) * | 2022-06-17 | 2022-08-30 | 广东省铁路规划设计研究院有限公司 | Anchor-pulling combined type foundation pit supporting structure suitable for soft soil area and construction method thereof |
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2021
- 2021-06-03 CN CN202121263902.6U patent/CN215801560U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960677A (en) * | 2022-06-17 | 2022-08-30 | 广东省铁路规划设计研究院有限公司 | Anchor-pulling combined type foundation pit supporting structure suitable for soft soil area and construction method thereof |
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