CN212248344U - Soft soil foundation pile foundation cantilever retaining wall structure - Google Patents
Soft soil foundation pile foundation cantilever retaining wall structure Download PDFInfo
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- CN212248344U CN212248344U CN202020558274.3U CN202020558274U CN212248344U CN 212248344 U CN212248344 U CN 212248344U CN 202020558274 U CN202020558274 U CN 202020558274U CN 212248344 U CN212248344 U CN 212248344U
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Abstract
The utility model discloses a soft soil foundation pile foundation cantilever retaining wall structure, which comprises a pile foundation, a cantilever retaining wall, a reinforcing column and a roadbed packing layer; the pile foundation is a cast-in-place pile and is provided with a plurality of pile foundations, the pile foundations are uniformly arranged in a soft soil foundation, the cantilever retaining wall is fixedly arranged at the top of the pile foundation, and a horizontal reinforcing platform for increasing the anti-overturning force of the cantilever retaining wall is arranged at the wall back of the cantilever retaining wall; the strengthening columns are evenly arranged in the soft soil foundation on the back side of the cantilever retaining wall and used for reinforcing the soft soil foundation, and the roadbed packing layer is filled between the back side of the cantilever retaining wall and the soft soil foundation. The utility model discloses a pile foundation and enhancement platform increase cantilever retaining wall's antidumping power consolidates soft soil ground through strengthening the post, have effectively solved current pile foundation cantilever retaining wall structure because horizontal deformation influences its stable problem, and the practicality is strong.
Description
Technical Field
The utility model belongs to the technical field of the building engineering device, concretely relates to soft soil foundation pile foundation cantilever retaining wall structure.
Background
The cantilever retaining wall is a retaining wall which is composed of a bottom plate and a straight wall fixed on the bottom plate, is mainly used for maintaining stability by the soil filling weight on the bottom plate, is used for supporting roadbed filling soil or hillside soil body and preventing the filling soil or the soil body from deforming and destabilizing, and mainly comprises three reinforced concrete members, namely a vertical wall, a toe plate and a heel plate. The cantilever retaining wall has small work amount, simple structure and convenient construction, can adapt to softer foundation and is widely applied.
Wherein, pile foundation cantilever retaining wall structure is applicable to the easy foundation soil fill that produces uneven settlement and receives the slope reinforcement, nevertheless sets up it at soft soil foundation especially soft soil thick ground or when the barricade is higher, and cantilever retaining wall structure's horizontal deformation may be great to may influence the overall stability of structure. Therefore, it is necessary to design a pile foundation cantilever retaining wall structure suitable for soft soil foundation.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a soft soil foundation pile foundation cantilever retaining wall structure increases the antidumping power of cantilever retaining wall through pile foundation and reinforcing platform, consolidates soft soil foundation through strengthening the post, has effectively solved current pile foundation cantilever retaining wall structure because horizontal deformation influences its stable problem.
The utility model adopts the technical proposal that:
a soft soil foundation pile foundation cantilever retaining wall structure comprises a pile foundation, a cantilever retaining wall, reinforcing columns and a roadbed packing layer;
the cantilever retaining wall is fixedly arranged at the top of the pile foundation, and a horizontal reinforcing platform for increasing the anti-overturning force of the cantilever retaining wall is arranged at the wall back of the cantilever retaining wall; the enhancement post evenly set up in the dorsal soft soil ground foundation of cantilever retaining wall for consolidate soft soil ground foundation, roadbed packing layer fill in between cantilever retaining wall dorsal part and the soft soil ground foundation.
Preferably, the distance between the reinforcing platform and the top of the cantilever retaining wall is 0.35-0.42 times of the height of the cantilever retaining wall.
Preferably, the reinforcing platform and the wall body of the cantilever retaining wall are integrally formed.
Preferably, the reinforcing column includes a reinforcing unit and an adsorption unit;
the reinforcing unit is fixedly arranged in a foundation pit of soft land, is of a tubular structure, and is obliquely provided with a plurality of connecting rods which are distributed outwards in a scattered manner at the bottom;
the adsorption unit is inserted into the reinforcing unit, is of a hollow structure, is provided with an adsorption layer in an inner layer stacking mode, is inserted into the soft soil foundation at the bottom and is provided with a plurality of adsorption channels, and the top of the adsorption unit is provided with an overflow port capable of being communicated with a drainage pipeline.
Preferably, the reinforcing column further comprises an impermeable layer and a reinforcing layer;
the impermeable layer is arranged on the top of the reinforced column, and the reinforced layer is arranged on the impermeable layer.
Preferably, the reinforcing layer is a concrete cast layer.
Preferably, the adsorption layer comprises a gravel layer, a perlite layer, a molecular sieve layer, an activated carbon layer and a limestone layer which are sequentially stacked from bottom to top.
Preferably, the reinforcement unit further comprises a pile tip block, the pile tip block is vertically arranged at the bottom of the connecting rod, and barbs for reinforcing connection are further arranged on the pile tip block.
Preferably, the pile foundation with the cantilever barricade is reinforced concrete structure, the roadbed packing layer is gravel packing.
Preferably, the wall body of the cantilever retaining wall is provided with a drain hole.
Compared with the prior art, the utility model discloses during the use, through setting up the pile foundation in soft soil foundation, and set up the cantilever barricade on the pile foundation, and set up the reinforcing platform on the cantilever barricade, simple structure, the pile foundation has great resistance to compression, resistance to plucking and horizontal external force bearing capacity of resistance to water, realized the improvement of the antidumping nature of cantilever barricade, the resistance to sliding and the foundation bearing capacity, the reinforcing platform can bear great upper portion load, avoided the bending of cantilever barricade wall body, improved the antidumping nature of cantilever barricade; simultaneously the utility model discloses a setting of enhancement post consolidates soft soil foundation, has strengthened the bearing capacity of soft soil foundation greatly, has effectively solved current pile foundation cantilever retaining wall structure because horizontal deformation influences its stable problem.
Drawings
Fig. 1 is a schematic view of a soft soil foundation pile foundation cantilever retaining wall structure provided by an embodiment of the present invention;
fig. 2 is a corresponding A structure in fig. 1 among the soft soil foundation pile foundation cantilever retaining wall structure that the embodiment of the utility model provides, the enlargements of post are strengthened promptly.
In the figure: 1. a pile foundation; 2. a cantilever retaining wall; 3. a reinforcement column; 31. a reinforcement unit; 311. a connecting rod; 312. pile tip blocks; 32. an adsorption unit; 321. an adsorption layer; 322. an adsorption channel; 323. an overflow port; 33. an impermeable layer; 34. a reinforcing layer; 4. a roadbed packing layer; 5. and (4) a reinforcing platform.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The soft soil foundation pile foundation cantilever retaining wall structure of the embodiment, as shown in fig. 1 and fig. 2, comprises a pile foundation 1, a cantilever retaining wall 2, a reinforcing column 3 and a roadbed packing layer 4;
the pile foundation 1 is a cast-in-place pile and is provided with a plurality of pile foundations 1, the pile foundations 1 are uniformly arranged in a soft soil foundation, the cantilever retaining wall 2 is fixedly arranged at the top of the pile foundation 1, and a horizontal reinforcing platform 5 for increasing the anti-overturning force of the cantilever retaining wall 2 is arranged at the wall back of the cantilever retaining wall 2; strengthen post 3 evenly set up in the dorsal soft soil ground foundation of 2 walls of cantilever barricade for consolidate soft soil ground foundation, roadbed packing layer 4 fill in between 2 walls of cantilever barricade dorsal side and the soft soil ground foundation.
Specifically, 1 in bank intervals of pile foundation evenly set up in soft soil foundation, cantilever barricade 2 is connected jointly at the top of pile foundation 1, and fill out roadbed packing layer 4 in the space of enclosing the city between cantilever barricade 2's the wall dorsal part and the soft soil foundation, and cantilever barricade 2's wall side exposes, and the wall dorsal part side sets up the horizontally reinforcing platform 5 that is used for increasing antidumping power, is located still be provided with the reinforced column 3 that is used for consolidating the foundation in the dorsal part of cantilever barricade 2 wall soft soil foundation.
Like this, set up a plurality of pile foundations 1 into the bored concrete pile, and set up in soft soil foundation, the top is provided with cantilever barricade 2, and the basement of cantilever barricade 2 transmits load such as pressure that dead weight, upper portion load and wall body bore for pile foundation 1, and pile foundation 1 transmits again for foundation soil, has reached and has not increased the basal area of cantilever barricade 2 and can improve the mesh of antidumping power and anti-sliding force, and simple structure.
Meanwhile, the reinforcing platform 5 is arranged on the back side of the cantilever retaining wall 2, the reinforcing platform 5 can bear large upper load, the wall body is prevented from being bent, the anti-overturning performance of the cantilever retaining wall 2 is effectively improved, and the stress performance of the cantilever retaining wall 2 is improved.
In order to ensure the integrity of the cantilever retaining wall 2, the reinforcing platform 5 is integrally formed with the wall body of the cantilever retaining wall 2.
In order to improve the stress of the cantilever retaining wall 2 and reduce the material consumption as much as possible, namely to control the cost while improving the performance, the distance between the reinforcing platform 5 and the top of the cantilever retaining wall 2 is 0.35 to 0.42 times, preferably 0.4 times, the height of the cantilever retaining wall 2.
The reinforcing platform 5 can be a flat plate structure or an improvement of the flat plate structure, namely, an extension platform of a triangular prism structure is arranged on the reinforcing platform 5 close to the lower bottom surface of the cantilever retaining wall 2, namely, the longitudinal section of the whole reinforcing platform 5 is a combined body of a right trapezoid and a rectangle.
In order to guarantee the performance of pile foundation cantilever retaining wall structure, pile foundation 1 with cantilever retaining wall 2 is reinforced concrete structure, roadbed packing layer 4 is the gravel packing.
As shown in fig. 2, the reinforcing column 3 includes a reinforcing unit 31 and an adsorption unit 32; the reinforcing unit 31 is used for reinforcing the soft soil foundation, and the adsorption unit 32 is mainly used for adsorbing the moisture in the soft soil foundation aiming at the characteristic of high moisture content of the soft soil foundation.
The reinforcing unit 31 is fixedly arranged in a foundation pit of soft land, the reinforcing unit 31 is of a tubular structure, and the bottom of the reinforcing unit 31 is obliquely provided with a plurality of connecting rods 311 which are distributed outwards in a scattered manner;
the adsorption unit 32 is inserted into the reinforcement unit 31, the adsorption unit 32 is of a hollow structure, an adsorption layer 321 is arranged in an inner lamination mode, the bottom of the adsorption unit 32 is inserted into a soft ground foundation and provided with a plurality of adsorption channels 322, and an overflow opening 323 which can be communicated with a drainage pipeline is arranged at the top of the adsorption unit 32.
In order to adsorb water in the soft land as much as possible and reduce the water content of the soft land, the adsorption layer 321 comprises a gravel layer, a perlite layer, a molecular sieve layer, an activated carbon layer and a limestone layer which are sequentially stacked from bottom to top.
Thus, in actual practice, the reinforcement unit 31 can be fixed in the foundation pit by inserting the reinforcement unit 31 into the foundation pit of a soft ground foundation and inserting the connection rods 311 into the ground.
In order to strengthen the fixing effect, the reinforcing unit 31 further comprises a pile tip block 312, the pile tip block 312 is vertically arranged at the bottom of the connecting rod 311, and barbs for strengthening the connection are further arranged on the pile tip block 312.
Simultaneously, insert the unit 32 and locate in strengthening the unit 31, adsorb the unit 32 and strengthen the unit 31 can the joint, and vertical slot has been seted up on the inner wall that just is strengthening the unit 31, vertical slot is followed strengthen the inner wall top of unit 31 and extend to the lower part, adsorb the outer wall of unit 32 be provided with a plurality ofly with the inserted block that vertical slot cooperation was used, when the inserted block inserted vertical slot, adsorb the unit 32 and insert and strengthen the unit 31, insert downwards and adsorb unit 32 until the inserted block reachs vertical slot bottom, adsorb the unit 32 and insert completely and strengthen the unit 31, realize adsorbing the unit 32 spacing in vertical side.
Thus, the water absorption performance of the adsorption layer 321 in the adsorption unit 32 allows water in soft ground to enter the adsorption unit 32 through the adsorption passage 322 and to be discharged through the weirs 323 communicating with the drainage pipe when the water content is large.
In order to strengthen the reinforcing effect, the reinforcing column 3 also comprises an impermeable layer 33 and a reinforcing layer 34;
the impermeable layer 33 is arranged on the top of the reinforced column 3, and the reinforced layer 34 is arranged on the impermeable layer 33. The reinforcing layer 34 is a concrete cast layer.
In practical use, the construction method of the reinforcing column 3 may be: digging a shallow foundation pit in the soft soil foundation, and then uniformly digging deep foundation pits in a matrix in the shallow foundation pit; inserting the reinforcing unit 31 into the deep foundation pit, and enabling the top of the reinforcing unit 31 to be flush with the top of the deep foundation pit; inserting the adsorption unit 32 into the reinforcement unit 31, inserting the bottom of the adsorption unit 32 into the soft ground, and the top of the adsorption unit 32 being higher than the deep foundation pit; concrete is poured into the deep foundation pit until the top of the deep foundation pit, the impermeable layer 33 is paved at the top of the deep foundation pit, namely the top of the shallow foundation pit, the reinforcing layer 34 is arranged, and then the soft soil is paved in the shallow foundation pit.
Be provided with the wash port on the wall body of cantilever barricade 2 for discharge the dorsal part of cantilever barricade 2 wall ponding, avoid ponding too much to lead to the ground to sink.
The working process is as follows: when the pile foundation cantilever retaining wall structure of this embodiment is used to needs, at first consolidate soft soil foundation through strengthening post 3, then set up cantilever retaining wall 2 that has reinforcing platform 3 to pile foundation 1 is poured into, fills out roadbed packing layer 4 between the wall dorsum side of cantilever retaining wall 2 and soft soil foundation at last.
When the cantilever retaining wall is used, the pile foundation is arranged in a soft soil foundation, the cantilever retaining wall is arranged on the pile foundation, and the reinforcing platform is arranged on the cantilever retaining wall, so that the structure is simple, the pile foundation has large pressure resistance, uplift resistance and horizontal external force bearing capacity, the anti-overturning performance, the anti-sliding performance and the foundation bearing capacity of the cantilever retaining wall are improved, the reinforcing platform can bear large upper load, the bending of the wall body of the cantilever retaining wall is avoided, and the anti-overturning performance of the cantilever retaining wall is improved; the cost is reduced as much as possible while the stress performance is ensured by limiting the height of the reinforcing platform; simultaneously the utility model discloses a setting of enhancement post consolidates soft soil foundation, has strengthened the bearing capacity of soft soil foundation greatly, has effectively solved current pile foundation cantilever retaining wall structure because horizontal deformation influences its stable problem.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A soft soil foundation pile foundation cantilever retaining wall structure is characterized by comprising a pile foundation (1), a cantilever retaining wall (2), reinforcing columns (3) and a roadbed packing layer (4);
the pile foundation (1) is a cast-in-place pile and is provided with a plurality of pile foundations (1), the pile foundations (1) are uniformly arranged in a soft soil foundation, the cantilever retaining wall (2) is fixedly arranged at the top of the pile foundation (1), and a horizontal reinforcing platform (5) for increasing the anti-overturning force of the cantilever retaining wall (2) is arranged at the wall back of the cantilever retaining wall (2); strengthen post (3) evenly set up in cantilever retaining wall (2) wall dorsal side's soft soil ground foundation for consolidate soft soil ground foundation, roadbed packing layer (4) fill in between cantilever retaining wall (2) wall dorsal side and the soft soil ground foundation.
2. A soft soil foundation pile foundation cantilever retaining wall structure of claim 1, wherein, the distance between the reinforcing platform (5) and the top of the cantilever retaining wall (2) is 0.35-0.42 times the height of the cantilever retaining wall (2) wall.
3. A soft soil foundation pile foundation cantilever retaining wall structure according to claim 1 or 2, wherein, the reinforcing platform (5) and the wall body of the cantilever retaining wall (2) are integrally formed.
4. A soft soil foundation pile foundation cantilever retaining wall structure according to claim 1, wherein the reinforcement column (3) comprises a reinforcement unit (31) and an adsorption unit (32);
the reinforcing unit (31) is fixedly arranged in a foundation pit of soft land, the reinforcing unit (31) is of a tubular structure, and the bottom of the reinforcing unit is obliquely provided with a plurality of connecting rods (311) which are distributed outwards in a scattered manner;
the adsorption unit (32) is inserted into the reinforcing unit (31), the adsorption unit (32) is of a hollow structure, an adsorption layer (321) is arranged in the hollow structure in an inner stacking mode, the bottom of the adsorption unit (32) is inserted into a soft land foundation and provided with a plurality of adsorption channels (322), and an overflow opening (323) which can be communicated with a drainage pipeline is formed in the top of the adsorption unit (32).
5. A soft soil foundation pile foundation cantilever retaining wall structure according to claim 4, wherein the reinforcement column (3) further comprises an impermeable layer (33) and a reinforcing layer (34);
the impermeable layer (33) is arranged on the top of the reinforced column (3), and the reinforced layer (34) is arranged on the impermeable layer (33).
6. A soft soil foundation pile foundation cantilever retaining wall structure according to claim 5, wherein, the enhancement layer (34) is a concrete pouring layer.
7. A soft soil foundation pile foundation cantilever retaining wall structure of claim 4, wherein, the adsorbed layer (321) includes from bottom to top in order to stack up the gravel layer, pearlite layer, molecular sieve layer, activated carbon layer and lime stone layer.
8. A soft soil foundation pile foundation cantilever retaining wall structure according to any one of claims 4-7, wherein, consolidate unit (31) still include stake point piece (312), stake point piece (312) sets up in the bottom of connecting rod (311) vertically, still be provided with the barb that is used for strengthening the connection on stake point piece (312).
9. A soft soil foundation pile foundation cantilever retaining wall structure of claim 1, characterized in that, the pile foundation (1) and the cantilever retaining wall (2) are both reinforced concrete structures, the subgrade packing layer (4) is gravel packing.
10. A soft soil foundation pile foundation cantilever retaining wall structure according to claim 1, characterized in that, the wall body of cantilever retaining wall (2) is provided with a drain hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020558274.3U CN212248344U (en) | 2020-04-15 | 2020-04-15 | Soft soil foundation pile foundation cantilever retaining wall structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020558274.3U CN212248344U (en) | 2020-04-15 | 2020-04-15 | Soft soil foundation pile foundation cantilever retaining wall structure |
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| CN212248344U true CN212248344U (en) | 2020-12-29 |
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| CN202020558274.3U Active CN212248344U (en) | 2020-04-15 | 2020-04-15 | Soft soil foundation pile foundation cantilever retaining wall structure |
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