Foundation structure of composite pile

Abstract

The utility model relates to the technical field of foundation structures, in particular to a foundation structure of a combined pile, which comprises a precast beam body, a supporting mechanism is arranged on the lower side of the precast beam body, the supporting mechanism comprises a steel pipe pile body, a concrete pile body, a connecting steel frame and a micro pile, and the lower side of the connecting steel frame is fixedly connected with the steel pipe pile body and the concrete pile body respectively. The upper side of the connecting steel frame is fixedly connected with the end of the precast beam body, the upper end of the micro pile is fixedly connected with the middle section of the precast beam body, and four sets of first connecting lead screws and second connecting lead screws are fixedly connected to the positions, close to the upper ends, of the side faces of the steel pipe pile body and the concrete pile body correspondingly. The concrete pile bodies, the steel pipe pile bodies and the micro piles are used in cooperation, so that the foundation is suitable for the complex geological environment, the stability of the foundation structure is improved, meanwhile, the precast piles, the connecting steel frames and the precast beam bodies are used in cooperation, the foundation structure is rapidly constructed, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation structures, in particular to a foundation structure of a combined pile. Background Art

[0002] The foundation refers to the soil or rock mass beneath a building that supports its foundation. The foundation structure is the foundation of a building's stability and is crucial for ensuring its safety and long-term use. Concrete piles and steel pipe piles are commonly used for foundation structures. Concrete piles are made of concrete (including ordinary reinforced concrete) and are known for their wood and steel-saving, durability, and low cost. They are widely used in hydraulic structures, industrial buildings, civil buildings, and bridge foundations. They are also commonly used for anti-skid or water-blocking slope and foundation pit support. Piles, constructed of steel pipes, tongue-and-groove mortise and tenon pins, can contain water, soil, and sand.

[0003] In traditional foundation structures, a single pile body is usually used. However, when the underground soil structure is more complex, the diameter of the steel pipe pile is larger, so the pile diameter may be limited during construction. In addition, the surface smoothness of the steel pipe pile is relatively high, which will affect the friction between the pile and the soil. The soil squeezing effect of the concrete pile is negative in saturated clay soil, which will cause quality accidents such as broken piles and necking of bored piles. In loose soil and unsaturated fill, it is positive and will play a role in densification and increasing bearing capacity. Due to the complex geology and uneven soil inside the foundation, a single pile body can easily lead to a decrease in the structural strength of the foundation. Therefore, the bearing capacity of the foundation is different in different locations, which has a greater impact on the constructed buildings and poses certain safety hazards.

[0004] Therefore, it is necessary to invent a foundation structure of combined piles to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a foundation structure of combined piles to solve the problem in the technology that due to complex geology and uneven soil inside the foundation, a single pile body easily leads to a reduction in the structural strength of the foundation. Therefore, the bearing capacity of the foundation is different in different locations, which has a great impact on the constructed buildings and poses certain safety hazards.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a foundation structure of a combination pile, comprising a prefabricated beam body, a supporting mechanism being provided on the lower side of the prefabricated beam body, the supporting mechanism comprising a steel pipe pile body, a concrete pile body, a connecting steel frame and a micro pile, the lower side of the connecting steel frame being fixedly connected to the steel pipe pile body and the concrete pile body respectively, the upper side of the connecting steel frame being fixedly connected to the end of the prefabricated beam body, the upper end of the micro pile being fixedly connected to the middle section of the prefabricated beam body, and four groups of first connecting screw rods and second connecting screw rods being fixedly connected to the side surfaces of the steel pipe pile body and the concrete pile body near the upper end respectively.

[0007] By adopting the above technical solution, corresponding steel pipe piles or concrete piles are selected according to different geological conditions. Concrete piles are used in loose soil or where the pile diameter is limited to increase density and improve bearing capacity while facilitating construction. Steel pipe columns are selected in areas with harder texture to improve the load-bearing capacity of the foundation, and multiple groups of micro-piles are used for support in the middle section of the prefabricated beam to further improve the structural strength of the prefabricated beam in the foundation and improve the supporting strength of the foundation.

[0008] Optionally, four groups of connecting blocks are fixedly connected to the side of the connecting steel frame near the lower end, and the lower end of the connecting block is provided with a connecting slot, which is clamped on the outside of the first connecting screw rod and the second connecting screw rod, and the surfaces of the first connecting screw rod and the second connecting screw rod are both threadedly connected with fixing nuts.

[0009] By adopting the above technical solution, the connecting slot is clamped on the surface of the first connecting screw rod and the second connecting screw rod, and then locked by the fixing nut to fix the connecting steel frame and the micro pile.

[0010] Optionally, the upper end of the steel pipe pile body is fixedly connected to a supporting top plate, the upper surface of the supporting top plate is fixedly connected to four groups of first plug-in rods, and the upper end of the concrete pile body is fixedly connected to four groups of second plug-in rods.

[0011] Optionally, four groups of second plug-in holes are opened at the bottom end of the connecting steel frame, and the first plug-in rods and the second plug-in rods are both plugged into the inside of the second plug-in holes.

[0012] By adopting the above technical solution, the first plug-in rod and the second plug-in rod are respectively inserted into the corresponding second plug-in holes, which effectively improves the connection strength between the pile body and the connecting steel frame. At the same time, the connecting slots in the connecting block are respectively clamped inside the first connecting screw rod and the second connecting screw rod, and are locked and fixed with fixing nuts, thereby improving the connection strength between the pile body and the connecting steel frame, facilitating rapid construction and installation, and improving construction efficiency.

[0013] Optionally, a supporting base plate is fixedly connected to the bottom of the steel pipe pile body.

[0014] By adopting the above technical solution, the supporting base plate improves the supporting strength of the steel pipe pile body.

[0015] Optionally, a cone head is fixedly connected to the bottom of the concrete pile body.

[0016] By adopting the above technical solution, the cone head is convenient for installing concrete downwards.

[0017] Optionally, two sets of third connecting screw rods are fixedly connected to the ends of the prefabricated beam body, and the lower ends of the third connecting screw rods are threadedly connected to the fixing nuts.

[0018] By adopting the above technical solution, the third connecting screw rod is embedded in the prefabricated beam during the production process.

[0019] Optionally, two groups of first plug holes are opened on both left and right ends of the connecting steel frame, and the third connecting screw rod is inserted into the inside of the first plug holes.

[0020] By adopting the above technical solution, one end of the prefabricated beam is placed above the connecting steel frame, and the third connecting screw is inserted into the first plug hole, and the third connecting screw is locked and fixed using a fixing nut, thereby locking and fixing the prefabricated beam to improve the stability of the prefabricated beam.

[0021] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0022] 1. The present invention selects corresponding steel pipe piles or concrete piles according to different geological conditions. Concrete piles are used in loose soil or where the pile diameter is limited, thereby increasing density and improving bearing capacity while facilitating construction. Steel pipe columns are selected in areas with relatively hard texture to improve the load-bearing capacity of the foundation. Multiple groups of micropiles are used in the middle section of the prefabricated beam for support, further improving the structural strength of the prefabricated beam in the foundation. The coordinated use of multiple groups of piles adapts to complex geological environments and effectively improves the supporting strength of the foundation. This solves the problem that due to complex geology and uneven soil quality inside the foundation, a single pile easily leads to a decrease in the structural strength of the foundation, resulting in different bearing capacities of the foundation in different locations, which has a significant impact on the constructed buildings and poses certain safety hazards.

[0023] 2. The utility model selects corresponding pile bodies according to the geological environment, pre-buries multiple groups of concrete pile bodies, steel pipe pile bodies and micro piles in the soil according to construction requirements, and fixes connecting steel frames on the surface, and then sets up prefabricated beams between the connecting steel frames, thereby quickly constructing the foundation and improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the steel pipe pile structure of the present utility model;

[0026] Figure 3 This is a schematic diagram of the concrete pile structure of the utility model;

[0027] Figure 4 This is a schematic diagram of the connecting steel frame structure of the utility model;

[0028] Figure 5 This is a schematic diagram of the prefabricated beam structure of the present utility model.

[0029] Description of reference numerals:

[0030] 1. Steel pipe pile body; 11. Support top plate; 12. First plug-in rod; 13. First connecting screw; 14. Support bottom plate; 2. Concrete pile body; 21. Second plug-in rod; 22. Second connecting screw; 23. Cone head; 3. Connecting steel frame; 31. First plug-in hole; 32. Second plug-in hole; 33. Connecting block; 34. Connecting slot; 4. Prefabricated beam body; 41. Third connecting screw; 42. Fixing nut; 43. Micro pile. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] The utility model provides Figures 1 to 4 The foundation structure of a combined pile shown in the figure includes a prefabricated beam body 4, and a supporting mechanism is provided on the lower side of the prefabricated beam body 4, the supporting mechanism including a steel pipe pile body 1, a concrete pile body 2, a connecting steel frame 3 and a micropile 43, the lower side of the connecting steel frame 3 is fixedly connected to the steel pipe pile body 1 and the concrete pile body 2 respectively, the upper side of the connecting steel frame 3 is fixedly connected to the end of the prefabricated beam body 4, the upper end of the micropile 43 is fixedly connected to the middle section of the prefabricated beam body 4, four groups of first connecting screw rods 13 and second connecting screw rods 22 are fixedly connected to the side surfaces of the steel pipe pile body 1 and the concrete pile body 2 near the upper end, four groups of connecting clamps 33 are fixedly connected to the side surfaces of the connecting steel frame 3 near the lower end, and a connecting slot 34 is provided at the lower end of the connecting clamp 33, which is clamped on the outer side of the first connecting screw rod 13 and the second connecting screw rod 22, and the surfaces of the first connecting screw rod 13 and the second connecting screw rod 22 are both threadedly connected with a fixing nut 42.

[0033] During the construction process, the materials and equipment required for different piles are prepared, including the concrete pile body 2, the steel pipe pile body 1, the micro pile 43, etc., and the appropriate construction plan is determined according to the engineering requirements and geological conditions, including the combination of different piles, the construction sequence and other parameters. The construction area is cleaned and leveled to ensure smooth construction. The concrete pile body 2, the steel pipe pile body 1 and the micro pile 43 are inserted into the soil according to the design requirements to ensure that the position and angle of the pile body are accurate. The connecting steel frame 3 is connected to the concrete pile body 2 and the steel pipe pile body 1 respectively, and then the multiple groups of pile bodies are connected together through the prefabricated beam body 4.

[0034] See Figures 2 to 5 The upper end of the steel pipe pile body 1 is fixedly connected to the support top plate 11, and the upper surface of the support top plate 11 is fixedly connected to four groups of first plug-in rods 12. The bottom of the steel pipe pile body 1 is fixedly connected to the support bottom plate 14. The upper end of the concrete pile body 2 is fixedly connected to four groups of second plug-in rods 21, and the bottom of the concrete pile body 2 is fixedly connected to the cone head 23. Four groups of second plug-in holes 32 are opened at the bottom end of the connecting steel frame 3. The first plug-in rod 12 and the second plug-in rod 21 are both inserted into the inside of the second plug-in holes 32. The end of the prefabricated beam body 4 is fixedly connected to two groups of third connecting screw rods 41. The lower end of the third connecting screw rod 41 is threadedly connected to a fixing nut 42. Two groups of first plug-in holes 31 are opened at both ends of the connecting steel frame 3, and the third connecting screw rod 41 is inserted into the inside of the first plug-in hole 31.

[0035] Specifically, after the pile body is pre-buried, the connecting steel frame 3 is placed above the steel pipe pile body 1 and the concrete pile body 2 respectively, and the first plug rod 12 and the second plug rod 21 are respectively inserted into the second plug hole 32 in the connecting steel frame 3 above them. At this time, the connecting card slots 34 at the corresponding positions are respectively stuck above the first connecting screw rod 13 and the second connecting screw rod 22, and then they are locked and fixed with the fixing nuts 42. Then, the prefabricated beam 4 is erected between the two groups of connecting steel frames 3, and the third connecting screw rod 41 is inserted into the inside of the first plug hole 31, and the fixing nut 42 is used to lock and fix one end of it that passes through the first plug hole 31, thereby improving the stability of the foundation. At the same time, the middle section of the prefabricated beam 4 is erected above the micro pile 43 to support the prefabricated beam 4, thereby further improving the structural strength of the foundation.

[0036] The working principle of the present invention is as follows: by using the concrete pile body 2, the steel pipe pile body 1, and the micro pile 43 in combination, the foundation is adapted to the complex geological environment and the stability of the foundation structure is improved. At the same time, by using the prefabricated piles, the connecting steel frame 3 and the prefabricated beam body 4 in combination, the foundation structure is quickly constructed and the construction efficiency is improved.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention.

Claims

1. A foundation structure of composite piles, comprising a prefabricated beam (4), characterized in that: A support mechanism is provided on the lower side of the prefabricated beam body (4), the support mechanism comprising a steel pipe pile body (1), a concrete pile body (2), a connecting steel frame (3) and a micro pile (43); the lower side of the connecting steel frame (3) is fixedly connected to the steel pipe pile body (1) and the concrete pile body (2), respectively; the upper side of the connecting steel frame (3) is fixedly connected to the end of the prefabricated beam body (4); the upper end of the micro pile (43) is fixedly connected to the middle section of the prefabricated beam body (4); and four groups of first connecting screw rods (13) and second connecting screw rods (22) are fixedly connected to the side surfaces of the steel pipe pile body (1) and the concrete pile body (2) near the upper end.

2. The foundation structure of a composite pile according to claim 1, characterized in that: Four groups of connecting blocks (33) are fixedly connected to the side of the connecting steel frame (3) near the lower end, and a connecting slot (34) is provided at the lower end of the connecting block (33). The connecting slot (34) is clamped on the outer side of the first connecting screw rod (13) and the second connecting screw rod (22), and the surfaces of the first connecting screw rod (13) and the second connecting screw rod (22) are both threadedly connected with a fixing nut (42).

3. The foundation structure of a composite pile according to claim 1, characterized in that: The upper end of the steel pipe pile body (1) is fixedly connected to a support top plate (11), the upper surface of the support top plate (11) is fixedly connected to four groups of first plug-in rods (12), and the upper end of the concrete pile body (2) is fixedly connected to four groups of second plug-in rods (21).

4. The combined pile foundation structure according to claim 3, characterized in that: Four groups of second plug holes (32) are provided at the bottom end of the connecting steel frame (3), and the first plug rod (12) and the second plug rod (21) are plugged into the inside of the second plug holes (32).

5. The combined pile foundation structure according to claim 1, characterized in that: The bottom of the steel pipe pile body (1) is fixedly connected to a supporting base plate (14).

6. The combined pile foundation structure according to claim 1, characterized in that: A cone head (23) is fixedly connected to the bottom of the concrete pile body (2).

7. The combined pile foundation structure according to claim 2, characterized in that: Two sets of third connecting screw rods (41) are fixedly connected to the ends of the prefabricated beam body (4), and the lower ends of the third connecting screw rods (41) are threadedly connected to the fixing nuts (42).

8. The combined pile foundation structure according to claim 7, characterized in that: Two groups of first plug holes (31) are provided at both left and right ends of the connecting steel frame (3), and the third connecting screw rod (41) is plugged into the inside of the first plug holes (31).

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