CN114718040B - Deep soft soil foundation structure - Google Patents
Deep soft soil foundation structure Download PDFInfo
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- CN114718040B CN114718040B CN202210442743.9A CN202210442743A CN114718040B CN 114718040 B CN114718040 B CN 114718040B CN 202210442743 A CN202210442743 A CN 202210442743A CN 114718040 B CN114718040 B CN 114718040B
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- precast pile
- guide
- reinforcing
- reinforcing table
- tip
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- 239000002689 soil Substances 0.000 title claims abstract description 52
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 105
- 239000004927 clay Substances 0.000 claims abstract description 8
- 230000002787 reinforcement Effects 0.000 claims description 36
- 238000009434 installation Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 34
- 101150054854 POU1F1 gene Proteins 0.000 description 8
- 239000011150 reinforced concrete Substances 0.000 description 7
- 238000010030 laminating Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The application discloses a deep soft soil foundation structure which comprises a foundation pit, wherein a clay layer is arranged in the foundation pit, a precast pile is arranged in the foundation pit, a cavity is arranged in the axis direction inside the precast pile, a reinforcing table is arranged on the side wall of the precast pile in a sliding manner, the reinforcing table slides along the outer side direction of the precast pile, a positioning disc positioned below the reinforcing table is fixed in the cavity of the precast pile, a limiting block horizontally opposite to the reinforcing table is arranged at the position of the positioning disc positioned on the axis of the precast pile, a first guide notch is arranged on the outer side of the limiting block facing the reinforcing table, a second guide notch horizontally opposite to the first guide notch is arranged on one side of the reinforcing table facing the limiting block, the first guide notch and the second guide notch are matched to form a guide groove, and the deep soft soil foundation structure further comprises a driving rod, and when the lower end of the driving rod is positioned in the guide groove and slides downwards along the guide groove, the driving rod pushes the reinforcing table to slide outwards the precast pile. The application has the effects of reducing the resistance of the precast pile when the precast pile enters the soil layer and facilitating the precast pile to be driven into the soil layer.
Description
Technical Field
The application relates to the field of constructional engineering, in particular to a deep soft soil foundation structure.
Background
Coastal beach geology is more in I province, especially the Minjiang mouth is widely distributed in north, and above-mentioned regional geological structure is complicated, and geological environment is special, and there is deep silt matter soft soil layer generally, and deep soft soil layer is less consolidated and the hole is big (e=2.0-3.0), and intensity is low (q=20-50 kpa), and the water content is high (> 80%), and the permeability is little, and thickness is more than 10m generally, local more than 40m. The soft soil foundation brings technical difficulties and capital investment to engineering construction, and the foundation treatment method is safe and reliable and has adaptability to the soil characteristics of the foundation.
Among the prior art, chinese patent with publication number CN212316888U discloses a marine soft soil foundation structure, including soft soil stratum, bottom soil layer, gravel bearing layer and reinforced concrete precast pile, soft soil stratum is located between bottom soil layer, the gravel bearing layer, reinforced concrete precast pile outer wall below fixedly connected with cross consolidates the platform, cross consolidates the first pointed end of fixedly connected with of platform outer wall bottom, cross consolidates the first pointed end of consolidating of platform outer wall one side all fixedly connected with second, reinforced concrete precast pile top all fixedly connected with linking frame, linking frame top fixedly connected with composite surface layer, first reinforcing steel sheet and second reinforcing steel sheet of fixedly connected with between the reinforced concrete precast pile top. The protrusion sets up the cross reinforcement platform, first reinforcement tip and the second reinforcement tip at reinforced concrete precast pile outer wall can increase reinforced concrete precast pile's area of stress for reinforced concrete precast pile supports more stably.
Aiming at the related technology, the improvement is needed by the traditional cushion layer replacement method, then piling is carried out, the precast pile is mostly driven into soil layers such as soft soil stratum, in the process of driving the precast pile downwards, the cross reinforcing table, the first reinforcing pointed head and the second reinforcing pointed head which protrude towards the outer wall of the precast pile can be subjected to larger resistance of the soil layers, so that the precast pile is inconvenient to be driven into the soil layers, and the cross reinforcing table, the first reinforcing pointed head and the second reinforcing pointed head are deformed and damaged.
Disclosure of Invention
In order to reduce the resistance of the precast pile when entering the soil layer and facilitate the precast pile to be driven into the soil layer, the application provides a deep soft soil foundation structure.
The application provides a deep soft soil foundation structure, which adopts the following technical scheme:
the utility model provides a deep soft soil foundation structure, includes the foundation ditch, be provided with clay layer in the foundation ditch, be provided with the precast pile in the foundation ditch, the inside axis direction of precast pile is provided with the cavity, precast pile lateral wall slides and is provided with the reinforcing table, the reinforcing table slides along precast pile outside direction, the cavity of precast pile is fixed with the positioning disk that is located the reinforcing table below, the positioning disk is located the position of precast pile axis and is provided with the stopper relative with reinforcing table level, the stopper is provided with first guide notch towards the outside of reinforcing table, one side of reinforcing table orientation stopper is provided with the second guide notch relative with first guide notch level, first guide notch and second guide notch cooperation form the guide way, still include the actuating lever that can dismantle and vertical slip set up in the cavity, the actuating lever lower extreme is located the guide way and when sliding down along the guide way, the actuating lever lower extreme promotes the reinforcing table and slides outward towards the precast pile.
By adopting the technical scheme, clay with hard texture and high strength is filled in the foundation pit by a filling method, and is tamped to form a clay layer; the positioning disc can fix the position of the limiting block in the cavity, and the reinforcing table is positioned in the precast pile when the precast pile is driven into the foundation pit, so that the reinforcing table is not always subjected to resistance when the precast pile is driven into the foundation pit; after the precast pile is driven into the foundation pit, the lower end of the driving rod enters the guide groove formed by the first guide notch and the second guide notch, and due to the fact that the position of the limiting block is fixed, when the driving rod gradually moves downwards, the reinforcing table can be driven to move out of the precast pile to the soil layer, so that the precast pile is more stable, resistance received when the precast pile enters the soil layer is reduced, and the precast pile is conveniently driven into the soil layer.
Preferably, the reinforcing table is provided with at least one around the circumferential direction of the precast pile, and the reinforcing table slides obliquely downward in a direction away from the axis of the precast pile.
By adopting the technical scheme, the reinforcement table is arranged at least one around the circumferential direction of the precast pile, so that the stability of the precast pile can be further improved; moreover, the reinforcing table slides obliquely downwards, so that the driving rod can drive the reinforcing table to overcome soil resistance and enter the soil layer.
Preferably, the inner wall of precast pile sets up the guide block, the lower extreme that consolidates the platform and be located the cavity laminating in the guide block and slide along the guide block one side, be provided with the locating component that is used for fixing the position of consolidating the platform and slides on the guide block.
Through adopting above-mentioned technical scheme, the guide block can be located the lower tip position that consolidates the platform and support in the precast pile for the slip of guide block is more stable, and when consolidate the platform and slide out the precast pile after, locating component can fix the position of consolidate the platform, makes consolidate the platform and keep stable when one end slides out the precast pile outside.
Preferably, the mounting groove has been seted up with the one side of reinforcing the platform laminating to the guide block, the one side of reinforcing the platform and the guide block laminating is provided with the locating hole, locating component is kept away from the fixture block of mounting groove bottom including setting up the elastic component in the mounting groove bottom and setting up at the elastic component, works as when reinforcing the platform lower extreme and sliding out the precast pile outside, the one end joint of fixture block is in the locating hole.
By adopting the technical scheme, when the reinforcing table does not slide out of the outer side of the precast pile, the elastic piece is compressed, and the clamping block is positioned in the mounting groove; when the reinforcing table slides out of the outer side of the precast pile, and the locating hole is opposite to the clamping block, the restoring force of the elastic piece drives the clamping block to protrude out of the surface of the guide block and be clamped into the locating hole, so that the sliding of the reinforcing table is limited, and the sliding position of the reinforcing table is fixed.
Preferably, the first guide notch is an inclined part arranged at the upper end of the limiting block and facing the reinforcing table, the second guide notch is an inclined part arranged at the upper end of the reinforcing table and facing the limiting block, and a guide surface mutually attached to the upper surface of the inclined part is arranged at the outer side of the lower end of the driving rod.
Through adopting above-mentioned technical scheme, laminating through the guide surface and the tilting part of actuating lever lower extreme, when the actuating lever gradually moves down, can promote to consolidate the platform and slide outside the precast pile.
Preferably, the guide surface at the lower end of the driving rod is embedded with and rotates with a plurality of balls, part of the balls protrude out of the guide surface, and the balls are abutted with the inclined part.
Through adopting above-mentioned technical scheme, through ball and tilting portion butt, can reduce the friction between guide surface and the tilting portion for the actuating lever can be better promote tilting portion towards the precast pile outside slip.
Preferably, the vertical tip that consolidates that is provided with of one side that the precast pile axis was kept away from to the inside tip that consolidates, consolidate the tip and vertically downwards towards consolidating the outside direction of platform lower extreme and slide, consolidate tip one side and be connected with the connecting rod, the one end that the tip was kept away from to the connecting rod consolidates extends to between stopper and the relative one side of platform and is located the guide way below, works as after the actuating lever passes through the mounting groove completely downwards, the lower extreme butt of actuating lever in the connecting rod upside.
Through adopting above-mentioned technical scheme, through setting up the reinforcement tip, when the actuating lever drives the reinforcement platform and slides out the precast pile outward, the actuating lever continues the downwardly moving and drives the connecting rod downwardly moving, and then drives the downward slip of reinforcement tip again for consolidate the tip and insert the soil horizon, further improve precast pile's stability.
Preferably, the vertical first groove that is used for holding and slides spacing to the reinforcement tip that is provided with in the reinforcement platform, the level is provided with the second groove that is used for holding the connecting rod in the reinforcement platform, first groove and second groove intercommunication each other, the connecting rod tip can be dismantled with the reinforcement tip and be connected, the opening part that the reinforcement platform lower extreme is located first groove is provided with elasticity and blocks up the piece in advance.
By adopting the technical scheme, the first groove can realize the sliding installation of the reinforcing tip in the reinforcing table, the second groove can realize the sliding installation of the connecting rod in the reinforcing table, and the connecting rod is detachably connected with the reinforcing tip, so that the connecting rod and the reinforcing tip can be installed in the reinforcing table; meanwhile, the elastic pre-plugging piece can plug the opening at the lower end of the first groove, and when the connecting rod is not pressed by the driving rod, the elastic pre-plugging piece can prevent the connecting rod from sliding out of the first groove.
Preferably, one end of the connecting rod is in threaded connection with the side wall of the reinforcement tip.
Through adopting above-mentioned technical scheme, install after first inslot when strengthening the tip, stretch into the one end of connecting rod from the second groove to with consolidate the tip spiro union, can realize connecting rod and consolidate quick detachable between the tip and be connected.
Preferably, the peripheral side wall of the foundation pit is provided with a support.
Through adopting above-mentioned technical scheme, the support can carry out the check to the week side of foundation ditch and keep off the protection, reduces the influence between clay layer and the weak soil around the foundation ditch, improves the stability of foundation.
In summary, the present application includes at least one of the following beneficial technical effects:
(1) Through setting up the first guide gap, the cooperation between second guide gap, the reinforcement platform, positioning disk, stopper and the actuating lever of connection that slide, can be after driving the precast pile into the soil layer, the outside of precast pile is ejected to the reinforcement platform again, realizes reducing the resistance that the precast pile received when entering the soil layer, is convenient for the effect of driving the precast pile into the soil layer;
(2) Through setting up the ball, can reduce the frictional force between actuating lever and the tilting part, be convenient for with consolidate the outer promotion of platform towards the precast pile.
(3) Through setting up the cooperation between strengthening tip and the connecting rod, can improve precast pile's stability.
Drawings
Fig. 1 is a schematic view of the foundation structure of the present embodiment;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
fig. 3 is a schematic view of the internal structure of the precast pile according to the present embodiment;
FIG. 4 is an enlarged view of portion B of FIG. 2;
fig. 5 is a schematic view of the structure of the reinforcing table of the present embodiment.
Reference numerals: 1. a foundation pit; 2. supporting; 3. a clay layer; 4. precast piles; 5. a reinforcement stand; 6. a positioning plate; 7. a limiting block; 8. a first guide notch; 9. a second guide notch; 10. a driving rod; 11. a guide surface; 12. a guide block; 13. a positioning assembly; 131. an elastic member; 132. a clamping block; 14. a mounting groove; 15. positioning holes; 16. a ball; 17. reinforcing the pointed end; 18. a connecting rod; 19. a first groove; 20. a second groove; 21. elastic pre-plugging piece.
Detailed Description
The application is described in further detail below with reference to fig. 1-5.
The embodiment of the application discloses a deep soft soil foundation structure. Referring to fig. 1 and 2, the foundation structure comprises a foundation pit 1, a support 2 is arranged on a peripheral side arm of the foundation pit 1, the support 2 can be formed by concrete pouring, and the influence of a surrounding soft soil layer on the foundation is reduced. The clay layer 3 is filled and tamped in the foundation pit 1, a plurality of precast piles 4 are vertically arranged in the foundation pit 1, the precast piles 4 can be precast and formed in advance and then are driven into the foundation pit 1, the lower ends of the precast piles 4 enter a soft soil layer below the bottom of the foundation pit 1, and the supporting stability of a foundation is guaranteed.
Referring to fig. 2 and 3, the inside axis direction of precast pile 4 is equipped with the cavity, and precast pile 4 lateral wall is close to the position of lower extreme and slides and be provided with the reinforcement platform 5, and the reinforcement platform 5 is the parallelogram block of vertical setting, and the reinforcement platform 5 horizontal both ends are vertical face, and the reinforcement platform 5 slides along the direction in precast pile 4 outsides, has offered the hole that supplies reinforcement platform 5 to slide out precast pile 4 outsides on the precast pile 4 lateral wall, and the reinforcement platform 5 stretches out precast pile 4 outside and can improve precast pile 4's installation stability. The reinforcing table 5 is provided with at least one around the circumference direction of the precast pile 4, in this scheme, the reinforcing table 5 is provided with three at the same height even interval, and the reinforcing table 5 slides downwards obliquely towards the direction of keeping away from the precast pile 4 axis.
Referring to fig. 2 and 3, a positioning plate 6 positioned below the reinforcing table 5 is fixed in the cavity of the precast pile 4, the periphery of the positioning plate 6 is fixed with the inner wall of the precast pile 4, a limiting block 7 is fixed at the center of the upper surface of the positioning plate 6, and the limiting block 7 is cylindrical and positioned at the axial position of the precast pile 4. The first guide notch 8 is formed in the outer side, facing the reinforcing table 5, of the limiting block 7, the second guide notch 9 is formed in the upper end side, facing the limiting block 7, of the reinforcing table 5, and the first guide notch 8 and the second guide notch 9 are horizontally opposite and matched to form a guide groove. Specifically, the one side that consolidates platform 5 is located the cavity is horizontal relative and have the interval with stopper 7, and first guiding gap 8 is for seting up at stopper 7 upper end and towards the tilting part that consolidates platform 5, and second guiding gap 9 is for seting up at the tilting part that consolidates platform 5 up end and one side junction towards stopper 7.
A driving rod 10 vertically slides in the cavity, and guide surfaces 11 mutually attached to the surfaces of the inclined parts are processed on two sides of the lower end of the driving rod 10. When the driving rod 10 is placed in the cavity, the lower end of the driving rod 10 is placed in the guide groove and slides downwards along the guide groove, the lower end of the driving block can gradually push the reinforcing table 5 to slide downwards in an inclined manner towards the outer side direction of the precast pile 4 under the action of guiding driving because the limiting block 7 is kept fixed. Therefore, when the precast pile 4 is driven, the reinforcing table 5 can be placed at the initial position, namely, the end part of the reinforcing table 5 does not extend out of the precast pile 4, so that the resistance of the reinforcing table 5 to soil layers during driving can be avoided; when the precast pile 4 is driven, one end of the reinforcing table 5 is pushed out of the soil layer, so that the reinforcing table 5 is prevented from being always subjected to resistance during driving.
Referring to fig. 3 and 4, a guide block 12 is fixed to the inner wall of the precast pile 4 to be inclined, the guide block 12 is inclined upward toward the axis of the precast pile 4, and the guide block 12 is located below the lower surface of the reinforcing table 5. The lower surface of the reinforcing table 5 in the cavity is attached to the guide block 12 and slides along the upper surface of the guide block 12, so that the guide block 12 is more stable in sliding.
In order to keep the pile 4 stable after being pushed out of the precast pile 4 at one end of the reinforcing table 5, a positioning assembly 13 for fixing the sliding position of the reinforcing table 5 is provided on the guide block 12. Specifically, a circular mounting groove 14 is formed in one surface of the guide block 12, which is attached to the reinforcing table 5, a positioning hole 15 is formed in one surface of the reinforcing table 5, which is attached to the guide block 12, and the positioning assembly 13 comprises an elastic member 131 with one end at the bottom of the mounting groove 14 and a clamping block 132 fixed at one end, away from the bottom of the mounting groove 14, of the elastic member 131; the elastic piece 131 is selected to be a spring or an elastic rubber column, when one end of the reinforcing table 5 gradually slides out of the outer side of the precast pile 4 and until the positioning hole 15 is vertically opposite to the clamping block 132, one end of the clamping block 132 protrudes out of the upper end opening of the mounting groove 14 under the action of the elastic piece 131 and is clamped in the positioning hole 15, so that the position of the reinforcing table 5 is fixed.
In addition, a plurality of balls 16 are embedded and rotated on the guide surface 11 at the lower end of the driving rod 10, less than half of the balls 16 protrude out of the guide surface 11, and the balls 16 are abutted with the inclined part; when the driving rod 10 slides obliquely downward while pushing the reinforcing table 5, the friction force between the driving rod 10 and the inclined portion can be reduced to better push the reinforcing table 5 to slide.
Referring to fig. 4 and 5, in order to further improve stability of the precast pile 4, a reinforcing tip 17 is vertically provided at a side of the inside of the reinforcing table 5 away from the axis of the precast pile 4, and the reinforcing tip 17 slides vertically downward toward a direction outside the lower surface of the reinforcing table 5, so that the reinforcing tip 17 enters the soil layer. Specifically, the side of the reinforcement tip 17 located in the reinforcement table 5 is vertical and detachably connected with a connecting rod 18, and one end of the connecting rod 18 away from the reinforcement tip 17 extends to a position between the opposite side of the stopper 7 to the reinforcement table 5 and below the guide groove. A first groove 19 for accommodating the reinforcing pointed head 17 and limiting the vertical sliding of the reinforcing pointed head 17 is vertically formed in the reinforcing table 5, and the first groove 19 is circular so as to limit the vertical sliding of the reinforcing pointed head 17; a second groove 20 for accommodating the connecting rod 18 and allowing the connecting rod 18 to slide along with the reinforcing tip 17 is horizontally arranged in the reinforcing table 5, one end of the second groove 20 positioned in the reinforcing tip 17 is communicated with the first groove 19, and the other end opening of the second groove 20 is positioned on one surface of the reinforcing table 5 facing the limiting block 7. An elastic pre-plugging sheet 21 is adhered to the lower surface of the reinforcing table 5 and positioned at the lower end opening of the first groove 19, and the elastic pre-plugging sheet 21 is made of a thin rubber sheet and plugs the lower end part opening of the first groove 19. One end of the connecting rod 18, which is close to the first groove 19, is in threaded connection with the side wall of the reinforcement tip 17.
When the reinforcing table 5 slides out of the precast pile 4 and is fixed by the positioning assembly 13, the driving rod 10 continues to move downwards and penetrates through the guide groove, then the lower end of the driving rod 10 abuts against the upper side of the connecting rod 18 and drives the connecting rod 18 to move downwards, and simultaneously, the lower end of the reinforcing tip 17 is driven to prop up the elastic pre-plugging piece 21 and is inserted into the soil layer from the opening of the lower end of the first groove 19.
The implementation principle of the deep soft soil foundation structure provided by the embodiment of the application is as follows: when the precast pile 4 is driven into the inner cavity of the foundation pit 1, the end of the reinforcing table 5 is positioned in the precast pile 4; after the precast pile 4 is driven into the foundation pit 1, the driving rod 10 is placed in the guide groove, guide surfaces 11 on two sides of the lower end of the driving rod 10 are attached to the inclined parts, the driving rod 10 is continuously driven to move downwards, the driving rod 10 can drive the reinforcing table 5 to incline towards the outer side of the precast pile 4 and move into the soil layer until the clamping blocks 132 are matched with the positioning holes 15 in a clamping mode, and the reinforcing table 5 is positioned. Then the driving rod 10 continues to move downwards to drive the connecting rod 18 and the reinforcing pointed head 17 to slide out of the reinforcing table 5, and the reinforcing pointed head 17 is inserted into the soil layer, so that the stability of the precast pile 4 is ensured; therefore, when the precast pile 4 is driven, the reinforcing table 5 and the reinforcing tip 17 can be prevented from being always subjected to resistance, the probability of damage to the reinforcing table 5 and the reinforcing tip 17 is reduced, the resistance to the precast pile 4 when entering the soil layer is reduced, and the precast pile 4 can be driven into the soil layer conveniently.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (5)
1. The utility model provides a deep soft soil foundation structure, includes foundation ditch (1), be provided with clay layer (3) in foundation ditch (1), be provided with precast pile (4) in foundation ditch (1), a serial communication port, precast pile (4) inside axis direction is provided with the cavity, precast pile (4) lateral wall slides and is provided with reinforcement table (5), reinforcement table (5) slide along precast pile (4) outside direction, precast pile (4) cavity is fixed with positioning disk (6) that are located reinforcement table (5) below, positioning disk (6) are located precast pile (4) axis's position be provided with reinforcement table (5) horizontally opposed stopper (7), stopper (7) are provided with first guide notch (8) towards reinforcement table (5) outside, reinforcement table (5) are provided with second guide notch (9) with first guide notch (8) horizontally opposed towards stopper (7) one side, first guide notch (8) and second guide notch (9) cooperate to form the guide slot, still include and dismantle and slide in vertical setting up in cavity (10) and follow down the guide slot when driving rod (10), the lower end of the driving rod (10) pushes the reinforcing table (5) to slide outwards of the precast pile (4); the inner wall of the precast pile (4) is provided with a guide block (12), the lower end of the reinforcing table (5) positioned in the cavity is attached to the guide block (12) and slides along one surface of the guide block (12), and the guide block (12) is provided with a positioning assembly (13) for fixing the sliding position of the reinforcing table (5); the installation groove (14) is formed in one surface, which is attached to the reinforcement table (5), of the guide block (12), the positioning hole (15) is formed in one surface, which is attached to the reinforcement table (5), of the guide block (12), the positioning assembly (13) comprises an elastic piece (131) arranged at the bottom of the installation groove (14) and a clamping block (132) arranged at the bottom, which is far away from the bottom of the installation groove (14), of the elastic piece (131), and when the lower end of the reinforcement table (5) slides out of the outer side of the precast pile (4), one end of the clamping block (132) is clamped in the positioning hole (15); the first guide notch (8) is an inclined part which is arranged at the upper end of the limiting block (7) and faces the reinforcing table (5), the second guide notch (9) is an inclined part which is arranged at the upper end of the reinforcing table (5) and faces the limiting block (7), and a guide surface (11) which is mutually attached to the upper surface of the inclined part is arranged at the outer side of the lower end of the driving rod (10); a guide surface (11) at the lower end of the driving rod (10) is embedded with and rotates with a plurality of balls (16), part of the balls (16) protrudes out of the guide surface (11), and the balls (16) are abutted with the inclined part; the vertical tip (17) that consolidates one side that precast pile (4) axis was kept away from to anchor (5) inside, consolidate tip (17) vertical downward towards consolidate the outside direction of platform (5) lower extreme and slide, consolidate tip (17) one side and be connected with connecting rod (18), one end that anchor tip (17) was kept away from to connecting rod (18) extends to between stopper (7) and the relative one side of anchor (5) and is located the guide way below, works as behind dead lever (10) completely downward through mounting groove (14), the lower extreme butt of dead lever (10) is in connecting rod (18) upside.
2. A deep soft soil foundation structure according to claim 1, wherein at least one reinforcing table (5) is provided around the circumferential direction of the precast pile (4), and the reinforcing table (5) is inclined to slide downward in a direction away from the axis of the precast pile (4).
3. A deep soft soil foundation structure according to claim 1, characterized in that a first groove (19) for accommodating and sliding limiting a reinforcing tip (17) is vertically arranged in the reinforcing table (5), a second groove (20) for accommodating a connecting rod (18) is horizontally arranged in the reinforcing table (5), the first groove (19) and the second groove (20) are mutually communicated, the end part of the connecting rod (18) is detachably connected with the reinforcing tip (17), and an elastic pre-plugging piece (21) is arranged at the opening of the first groove (19) at the lower end of the reinforcing table (5).
4. A deep soft soil foundation structure according to claim 3, wherein one end of the connecting rod (18) is screwed with the side wall of the reinforcing tip (17).
5. A deep soft soil foundation structure according to claim 1, characterized in that the peripheral side walls of the foundation pit (1) are provided with supports (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210442743.9A CN114718040B (en) | 2022-04-26 | 2022-04-26 | Deep soft soil foundation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210442743.9A CN114718040B (en) | 2022-04-26 | 2022-04-26 | Deep soft soil foundation structure |
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| Publication Number | Publication Date |
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| CN114718040A CN114718040A (en) | 2022-07-08 |
| CN114718040B true CN114718040B (en) | 2023-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210442743.9A Active CN114718040B (en) | 2022-04-26 | 2022-04-26 | Deep soft soil foundation structure |
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| CN213625550U (en) * | 2020-08-29 | 2021-07-06 | 大昌建设集团有限公司 | Anti-settlement foundation pile |
| CN113981954A (en) * | 2021-11-17 | 2022-01-28 | 东莞嘉誉诚建设基础工程有限公司 | Soft soil foundation reinforcing structure and method |
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| JP2002061178A (en) * | 2000-08-23 | 2002-02-28 | Mitani Sekisan Co Ltd | Method of burying existing pile with protrusion in pile installation by inner excavation and foundation pile structure |
| CN212316888U (en) * | 2020-05-09 | 2021-01-08 | 肖偲 | Sea facies soft soil foundation structure |
| CN213625550U (en) * | 2020-08-29 | 2021-07-06 | 大昌建设集团有限公司 | Anti-settlement foundation pile |
| CN112252303A (en) * | 2020-09-17 | 2021-01-22 | 浙江钱塘江水利建筑工程有限公司 | Precast pile mounting structure |
| CN112814023A (en) * | 2020-12-30 | 2021-05-18 | 安徽先河建筑工程有限公司 | Pile-plate type retaining wall and construction method thereof |
| CN113981954A (en) * | 2021-11-17 | 2022-01-28 | 东莞嘉誉诚建设基础工程有限公司 | Soft soil foundation reinforcing structure and method |
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