Steel sheet pile implanting structure
By forming groove sections on the outside of the foundation pit and filling them with fillers, using modified clay soil and plain clay soil, as well as bending arrangement and lock connection, the problem of difficulty in implanting steel sheet piles in hard formations is solved, and the problem of improvement is improved. Implant quality and construction efficiency reduce costs.
Patent Information
- Application Number
- CN202420192694.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-25
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-25
AI Technical Summary
In hard formations, the implantation of steel sheet piles is difficult, which can easily lead to damage to the pile head and bend and deformation of the pile body, which reduces the implant quality and fails to achieve the expected enclosure effect.
The groove section is formed outside the foundation pit and filled with filler to form a backfill section. Multiple steel sheet piles are connected and implanted along the length of the groove section. They are filled with modified clay and plain clay soil. The lower part of the steel sheet pile is embedded with modified viscosity. In the soil, the upper part is embedded in plain clay soil, and is connected with a bent layout and locking to reduce the displacement.
The implantation quality of steel sheet piles is improved, the pile head damage and bending deformation is avoided, efficient and rapid construction is achieved, the construction period and cost are reduced, the overall cost is low, and the role and effectiveness of passive soil is fully utilized.
Smart Images
Figure CN222161293U_ABST
Abstract
Description
Technical Field
[0001] The utility model patent relates to the technical field of steel sheet piles, and specifically, to a steel sheet pile implantation structure. Background Art
[0002] In foundation pit retaining projects, steel sheet piles are often used to be implanted outside the foundation pit to protect the foundation pit. Due to the complex and changeable strata, it is very difficult to implant steel sheet piles in hard strata, such as dense sand layers, gravel layers, pebble (crushed) stone layers, and strongly weathered layers of hard rocks.
[0003] In the prior art, due to the limitations of the strength of a single steel sheet pile and the pressure of the machine, it becomes very difficult to implant the steel sheet pile in the stratum. The forced implantation of the steel sheet pile will easily lead to damage to the pile head and bending and deformation of the pile body, which greatly reduces the implantation quality of the steel sheet pile and fails to achieve the expected containment effect. Utility Model Content
[0004] The utility model aims to provide a steel sheet pile implantation structure, aiming to solve the problem of poor implantation quality in the steel sheet pile implantation structure in the prior art.
[0005] The utility model is implemented as follows: a steel sheet pile implantation structure comprises a trench section formed in a stratum and located outside a foundation pit, wherein the trench section is filled with a filler, wherein the filler fills the entire trench section and is compacted by extrusion to form a backfill section; wherein a plurality of steel sheet piles are implanted in the backfill section, wherein ends of the plurality of steel sheet piles are butted in sequence along the length direction of the trench section; wherein the trench section has a side wall facing the foundation pit, wherein the steel sheet piles abut against the side wall.
[0006] Furthermore, a plurality of holes are formed in the stratum by drilling with a drilling rig, the plurality of holes are arranged in a row, and adjacent holes are arranged to interlock with each other, and the plurality of holes form the slot section.
[0007] Furthermore, the lower part of the trench section is located between the bottom of the trench section and the design elevation of the foundation pit bottom, forming a lower section.
[0008] Furthermore, the filler includes modified clay, which is formed by mixing clay and cement powder, and the modified clay fills the entire lower section.
[0009] Furthermore, the upper portion of the trench section is located between the designed elevation of the foundation pit bottom and the ground, forming an upper section.
[0010] Furthermore, the filler includes plain clay soil, and the plain clay soil fills the entire upper section.
[0011] Furthermore, the lower part of the steel sheet pile is embedded in the modified clay in the lower section, and the upper part of the steel sheet pile is embedded in the plain clay in the upper section.
[0012] Furthermore, the adjacent steel sheet piles are arranged in a staggered manner towards each other.
[0013] Further, the steel sheet piles are arranged in a bent shape, including a middle plate, and side plates are respectively provided at both ends of the middle plate, the inner ends of the side plates are butted against the ends of the middle plate, and the outer ends of the side plates are inclined away from the middle plate and extend outward;
[0014] A bending shape is formed between the middle plate and the two side plates, and an enclosed cavity with an outer opening is enclosed between the two side plates and the middle plate. The outer openings of the enclosed cavities of adjacent steel sheet piles are arranged in an offset manner, and the side plates of adjacent steel sheet piles are locked and connected to each other.
[0015] Furthermore, the outer ends of the side plates are bent outward to form the locking plates, and the locking plates and the side plates are enclosed to form the locking cavity, and the locking plates of the adjacent steel sheet piles are locked in the locking cavity.
[0016] Compared with the prior art, the steel sheet pile implantation structure provided by the utility model forms a trench section in the stratum, the trench section is backfilled with fillers to form a backfill section, and then the steel sheet piles are implanted in the backfill section, which is convenient for implanting the steel sheet piles, avoids the phenomenon of pile head damage and pile body bending and deformation, ensures the implantation quality of the steel sheet piles, has the characteristics of high efficiency and rapid construction, low construction period and cost, and relatively low overall cost; secondly, the steel sheet piles abut against the side wall, reduce the displacement of the steel sheet piles in the trench section under the pushing effect of the soil behind the foundation pit wall, give full play to the effect of passive soil, and effectively improve the planting quality of the steel sheet piles. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a top view schematic diagram of the steel sheet pile implantation structure provided by the utility model;
[0018] Figure 2 It is a top view schematic diagram of the steel sheet pile provided by the utility model;
[0019] Figure 3 It is a cutaway schematic diagram of the backfill section provided by the utility model. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0021] The implementation of the present utility model is described in detail below in conjunction with specific embodiments.
[0022] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0023] Reference Figure 1-3 As shown, it is a preferred embodiment provided by the utility model.
[0024] The steel sheet pile implantation structure includes a trench section formed in the stratum and located outside the foundation pit 400. The trench section is filled with filler 200. The filler 200 fills the entire trench section and is formed into a backfill section by extrusion and compaction. In the process of backfilling the filler 200, a layered backfilling method can be adopted, and multiple backfillings can be performed. After each backfilling, extrusion and compaction are performed to make the filler 200 in a dense state.
[0025] A plurality of steel sheet piles 300 are implanted in the backfill section, and the ends of the plurality of steel sheet piles 300 are butted in sequence along the length direction of the trench section; the trench section has a side wall facing the foundation pit 400, and the steel sheet piles 300 abut against the side wall.
[0026] The steel sheet pile implantation structure provided above forms a trench section in the stratum, and the trench section is backfilled with filler 200 to form a backfill section, and then the steel sheet pile 300 is implanted in the backfill section, which facilitates the implantation of the steel sheet pile 300 and avoids the phenomenon of pile head damage and pile body bending and deformation of the steel sheet pile 300, thereby ensuring the implantation quality of the steel sheet pile 300, and has the characteristics of high efficiency and rapid construction, low construction period cost, and relatively low overall cost; secondly, the steel sheet pile 300 abuts against the side wall, reducing the displacement of the steel sheet pile 300 in the trench section under the pushing effect of the soil behind the foundation pit 400 wall, giving full play to the effect of passive soil, and effectively improving the planting quality of the steel sheet pile 300.
[0027] In this embodiment, a plurality of holes 100 are formed in the formation by drilling with a drilling rig. The plurality of holes 100 are arranged in a row, and adjacent holes 100 are arranged to interlock with each other. The plurality of holes 100 form the above-mentioned slot section.
[0028] When drilling a plurality of holes 100, an interval drilling construction may be adopted, that is, the holes 100 formed by adjacent drilling are arranged at intervals, which is convenient for the drilling of the drilling rig.
[0029] In this embodiment, the lower part of the trench section is located between the bottom of the trench section and the design elevation of the bottom of the foundation pit 400, forming a lower section.
[0030] The filler 200 includes modified clay 202, which is formed by mixing clay and cement powder. The modified clay 202 fills the entire lower section. For the modified clay 202, the amount of cement powder is 5% of the weight of the clay. For the water-rich sand layer, the amount of cement powder can be appropriately increased.
[0031] In this embodiment, the upper part of the trench section is located between the designed elevation of the bottom of the foundation pit 400 and the ground, forming an upper section. The filler 200 includes plain clay 201, and the plain clay 201 fills the entire upper section.
[0032] The lower portion of the steel sheet pile 300 is embedded in the modified clay 202 of the lower section, and the upper portion of the steel sheet pile 300 is embedded in the plain clay 201 of the upper section.
[0033] The lower section is backfilled and compacted with modified clay 202 to ensure the hardness and density around the steel sheet piles 300, and the upper section is backfilled and compacted with screened plain clay 201 to facilitate the later extraction and reuse of the steel sheet piles 300.
[0034] Adjacent steel sheet piles 300 are arranged in a staggered manner, so that the steel sheet piles 300 can cooperate with each other easily, and after multiple steel sheet piles 300 are implanted, the enclosed structure formed is more stable.
[0035] In this embodiment, the steel sheet pile 300 is arranged in a bent shape, including a middle plate 301, and side plates 302 are respectively provided at both ends of the middle plate 301. The inner ends of the side plates 302 are connected to the ends of the middle plate 301, and the outer ends of the side plates 302 are inclined and extend outward away from the middle plate 301.
[0036] A bending shape is formed between the middle plate 301 and the two side plates 302, and an outer opening enclosed cavity 304 is formed between the two side plates 302 and the middle plate 301. The outer openings of the enclosed cavities 304 of adjacent steel sheet piles 300 are arranged in a staggered manner, and the side plates 302 of adjacent steel sheet piles 300 are locked and connected to each other.
[0037] The steel sheet pile 300 is bent and has a larger contact surface when implanted in the stratum, making it more stable after implantation. Adjacent steel sheet piles 300 are locked together by the side plates 302, providing a stable structure.
[0038] In this embodiment, the outer ends of the side plates 302 are bent outward to form locking plates 303. The locking plates 303 and the side plates 302 form a locking cavity, and the locking plates 303 of adjacent steel sheet piles 300 are locked in the locking cavity.
[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. The steel sheet pile implantation structure is characterized by: It includes a trench section formed in the stratum and located outside the foundation pit, the trench section is filled with filler, the filler fills the entire trench section, and a backfill section is formed by extrusion and compaction; a plurality of steel sheet piles are implanted in the backfill section, and along the length direction of the trench section, the ends of the plurality of steel sheet piles are butted in sequence; the trench section has a side wall facing the foundation pit, and the steel sheet piles abut against the side wall.
2. The steel sheet pile implantation structure according to claim 1, characterized in that: A plurality of holes are formed in the stratum by drilling with a drilling rig, the plurality of holes are arranged in a row, and adjacent holes are arranged to interlock with each other, and the plurality of holes form the slot section.
3. The steel sheet pile implantation structure according to claim 1 or 2, characterized in that: The lower part of the trough section is located between the bottom of the trough section and the design elevation of the bottom of the foundation pit, forming a lower section.
4. The steel sheet pile implantation structure according to claim 3, characterized in that: The filler includes modified clay soil, which is formed by mixing clay soil and cement powder. The modified clay soil fills the entire lower section.
5. The steel sheet pile implantation structure according to claim 4, characterized in that: The upper part of the trench section is located between the designed elevation of the bottom of the foundation pit and the ground, forming an upper section.
6. The steel sheet pile implantation structure according to claim 5, characterized in that: The filler includes plain clay soil, and the plain clay soil fills the entire upper section.
7. The steel sheet pile implantation structure according to claim 6, characterized in that: The lower part of the steel sheet pile is embedded in the modified clay soil of the lower section, and the upper part of the steel sheet pile is embedded in the plain clay soil of the upper section.
8. The steel sheet pile implantation structure according to claim 1 or 2, characterized in that: The adjacent steel sheet piles are arranged in a staggered manner towards each other.
9. The steel sheet pile implantation structure according to claim 8, characterized in that: The steel sheet piles are arranged in a bent shape, including a middle plate, and side plates are respectively provided at both ends of the middle plate, the inner ends of the side plates are butted against the ends of the middle plate, and the outer ends of the side plates are inclined away from the middle plate and extend outward; A bending shape is formed between the middle plate and the two side plates, and an enclosed cavity with an outer opening is enclosed between the two side plates and the middle plate. The outer openings of the enclosed cavities of adjacent steel sheet piles are arranged in an offset manner, and the side plates of adjacent steel sheet piles are locked and connected to each other.
10. The steel sheet pile implantation structure according to claim 9, characterized in that: The outer ends of the side plates are bent outward to form locking plates, and the locking plates and the side plates are enclosed to form a locking cavity, in which the locking plates of the adjacent steel sheet piles are locked.