Cast-in-place CFG pile composite foundation structure of high-rise building

Abstract

The utility model discloses a high-rise building cast-in-place CFG pile composite foundation structure, and relates to the field of buildings, the high-rise building cast-in-place CFG pile composite foundation structure comprises a plurality of CFG piles which are distributed according to a rectangular array, the upper ends of the CFG piles are fixedly connected with positioning assemblies, and the positioning assemblies are used for positioning the horizontal positions and postures of the CFG piles; a supporting frame is arranged between every four adjacent positioning assemblies, and the multiple supporting frames are matched with one another so that the distance between the multiple positioning assemblies can be limited, and displacement of the positioning assemblies is prevented; the bottom of the supporting frame contacts with a soil layer. The bearing capacity of the CFG piles can be improved by arranging the positioning assemblies, settlement and inclination of the CFG piles are avoided, the height of the prefabricated slab can be limited through the supporting frames, the multiple supporting frames form a supporting face with the raft effect to prevent the prefabricated slab from descending, and settlement of the CFG piles can be further avoided through cooperation of the supporting frames, the prefabricated slab and the positioning assemblies; all the CFG piles form a whole, load bearing can be dispersed, and then the stability of the foundation structure is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of building technology, specifically to a cast-in-place CFG pile composite foundation structure for high-rise buildings. Background Technology

[0002] Foundation treatment is a crucial step in the construction of high-rise buildings. Due to the large loads of high-rise buildings, the requirements for the bearing capacity and deformation control of the foundation are extremely high. Traditional foundation treatment methods, such as direct bearing by natural ground or the use of a single pile foundation, are often insufficient to meet the needs of high-rise buildings.

[0003] When natural foundations bear the enormous loads of high-rise buildings, they are prone to significant and uneven settlement, leading to safety hazards such as cracks and tilting. While single pile foundations, such as precast piles, have high bearing capacity, they may generate significant noise and vibration during construction, impacting the surrounding environment. Furthermore, the synergistic effect between piles is limited, making it difficult to fully utilize the bearing capacity of the foundation soil.

[0004] CFG pile (cement-fly ash-gravel pile) composite foundations, as a novel foundation treatment method, combine the combined action of piles and foundation soil, thereby improving the bearing capacity of the foundation and reducing settlement to a certain extent. However, existing CFG pile composite foundations still have some problems. For example, there is a lack of synergistic effect between piles, meaning that each CFG pile acts relatively independently, leaving room for improvement in load-bearing distribution. CFG piles are still prone to settlement, and existing technologies lack measures to ensure the control of CFG pile inclination. Utility Model Content

[0005] The purpose of this utility model is to provide a high-rise building cast-in-place CFG pile composite foundation structure in order to solve the above problems, as detailed below.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This utility model provides a cast-in-place CFG pile composite foundation structure for high-rise buildings, including a number of CFG piles distributed in a rectangular array. The upper end of each CFG pile is fixedly connected to a positioning component for positioning the horizontal position and attitude of the CFG pile.

[0008] A support frame is set between four adjacent positioning components. Several support frames work together to limit the spacing between several positioning components and prevent the positioning components from shifting.

[0009] The bottom of the support frame is in contact with the soil layer, and a precast slab is fixedly installed on the upper side of the positioning component, with the bottom of the precast slab in contact with the upper side of the support frame.

[0010] The above-mentioned high-rise building cast-in-place CFG pile composite foundation structure is adopted. The CFG piles are deeply buried in the soil layer in a rectangular array. By setting up positioning components, the bearing capacity of the CFG piles can be improved, and the settlement and tilting of the CFG piles can be avoided. The top plate can prevent the settlement of the CFG piles, and the positioning plate can position the CFG piles and prevent them from tilting.

[0011] By supporting the positioning components with a support frame, the distance between two adjacent positioning components remains unchanged. The cooperation between the support frame and the positioning components can further improve the stability of the CFG pile attitude.

[0012] The height of the precast slab can be limited by the support frame. Several support frames form a support surface that acts as a raft to prevent the precast slab from descending. The support frame, together with the precast slab and positioning components, can further prevent the settlement of the CFG pile.

[0013] Preferably, the positioning component includes a top plate, and four positioning plates are fixedly connected to the bottom of the top plate.

[0014] Preferably, the positioning plate is vertically installed at the bottom of the top plate, and the four positioning plates are distributed in a cross shape around the CFG pile.

[0015] Preferably, the positioning component is a concrete structure, and the positioning plate is integrally formed with the top plate.

[0016] Preferably, the positioning component is provided with a steel reinforcement frame, and the steel reinforcement frame penetrates the CFG pile.

[0017] Preferably, the precast slab is a concrete component, and the precast slab is fixedly connected to the top of the roof slab by a number of bolts.

[0018] Preferably, angle steel is fixedly connected to each of the four corners of the support frame, and the angle steel is fitted with the longitudinal edges of the top plate with clearance.

[0019] Preferably, the support frame and the gaps between the positioning components are filled with a padding layer.

[0020] Preferably, a cement-soil layer is laid on the upper side of the mattress layer.

[0021] Preferably, the support frame is made of steel.

[0022] The beneficial effects are:

[0023] By setting up positioning components, the bearing capacity of CFG piles can be improved, and CFG pile settlement and tilting can be avoided. The positioning components are supported by support frames, so that the distance between two adjacent positioning components remains unchanged. The cooperation between the support frames and positioning components can further improve the stability of the CFG pile posture. The support frames can limit the height of the precast slab. Several support frames form a support surface with the function of a raft slab to block the precast slab from descending. The cooperation between the support frames, precast slabs and positioning components can further prevent CFG pile settlement, so that all CFG piles form a whole, which can distribute the load and thus significantly improve the stability of the foundation structure. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a front view structural diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the three-dimensional structure of the support frame of this utility model;

[0027] Figure 3 This is a schematic diagram of the three-dimensional structure of the steel frame of this utility model;

[0028] Figure 4 This is a three-dimensional structural diagram of the positioning component of this utility model.

[0029] The annotations in the attached figures are explained as follows:

[0030] 1. CFG pile; 2. Positioning component; 3. Support frame; 4. Precast slab; 5. Mattress layer; 6. Cement soil layer; 7. Reinforcing frame; 8. Top slab; 9. Positioning plate; 10. Angle steel. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] See Figures 1-4As shown, this utility model provides a cast-in-place CFG pile composite foundation structure for high-rise buildings, including a number of CFG piles 1 distributed in a rectangular array. A positioning component 2 is fixedly connected to the upper end of the CFG pile 1 for positioning the horizontal position and attitude of the CFG pile 1.

[0033] A support frame 3 is provided between four adjacent positioning components 2. Several support frames 3 cooperate with each other to limit the spacing between several positioning components 2 and prevent the positioning components 2 from shifting.

[0034] The bottom of the support frame 3 is in contact with the soil layer, and the precast slab 4 is fixedly installed on the upper side of the positioning component 2. The bottom of the precast slab 4 is in contact with the upper side of the support frame 3.

[0035] As an optional implementation, the positioning component 2 includes a top plate 8, and four positioning plates 9 are fixedly connected to the bottom of the top plate 8. The positioning plates 9 are embedded in the soil layer, which can prevent the CFG pile 1 from tilting. The CFG pile 1 is existing technology.

[0036] The positioning plate 9 is vertically set at the bottom of the top plate 8, and the four positioning plates 9 are distributed in a cross shape around the CFG pile 1. The cross shape can prevent the CFG pile 1 from tilting in any direction.

[0037] The positioning component 2 is a concrete component. The positioning plate 9 and the top plate 8 are integrally formed and cast in one go, which can improve the strength and stability of the positioning component 2.

[0038] The positioning component 2 is equipped with a steel frame 7, which penetrates the CFG pile 1. The positioning component 2 and the CFG pile 1 are cast together. After the pile hole is excavated, the steel cage is placed into the hole. Then, a shape that matches the shape of the steel frame 7 is excavated at the top of the pile hole and the steel frame 7 is placed in it.

[0039] The precast slab 4 is a concrete component, and the precast slab 4 is fixedly connected to the top of the top plate 8 by several bolts.

[0040] Angle steel 10 is fixedly connected to each of the four corners of the support frame 3, and the angle steel 10 is fitted with the longitudinal corner of the top plate 8 with clearance. The support frame 3 can be stably installed between the four adjacent positioning components 2 through the four angle steel 10.

[0041] The support frame 3 and the gaps between several positioning components 2 are filled with padding layers 5.

[0042] A cement-soil layer 6 is laid on the upper side of the mattress layer 5.

[0043] The support frame 3 is made of steel. Since the support frame 3 is irregular in shape, it is easy to manufacture using steel.

[0044] Using the above structure, the CFG pile 1 is buried deep in the soil in a rectangular array. By setting the positioning component 2, the bearing capacity of the CFG pile 1 can be improved, and the settlement and tilting of the CFG pile 1 can be avoided. The top plate 8 can prevent the settlement of the CFG pile 1, and the positioning plate 9 can position the attitude of the CFG pile 1 to prevent the CFG pile 1 from tilting.

[0045] The positioning component 2 is supported by the support frame 3, so that the distance between two adjacent positioning components 2 remains unchanged. The support frame 3 and the positioning component 2 work together to further improve the stability of the CFG pile 1's attitude.

[0046] The height of the precast slab 4 can be limited by the support frame 3. Several support frames 3 form a support surface with the function of a raft to block the precast slab 4 from descending. The support frame 3, together with the precast slab 4 and the positioning component 2, can further prevent the CFG pile 1 from settling.

[0047] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A cast-in-place CFG pile composite foundation structure for high-rise buildings, characterized in that: It includes several CFG piles (1) arranged in a rectangular array. The upper end of each CFG pile (1) is fixedly connected to a positioning component (2) for positioning the horizontal position and attitude of the CFG pile (1). A support frame (3) is provided between four adjacent positioning components (2). Several support frames (3) cooperate with each other to limit the spacing between several positioning components (2) and prevent the positioning components (2) from shifting. The bottom of the support frame (3) is in contact with the soil layer, and a precast plate (4) is fixedly installed on the upper side of the positioning component (2), with the bottom of the precast plate (4) in contact with the upper side of the support frame (3).

2. The high-rise building cast-in-place CFG pile composite foundation structure according to claim 1, characterized in that: The positioning component (2) includes a top plate (8), and four positioning plates (9) are fixedly connected to the bottom of the top plate (8).

3. The high-rise building cast-in-place CFG pile composite foundation structure according to claim 2, characterized in that: The positioning plate (9) is vertically set at the bottom of the top plate (8), and the four positioning plates (9) are distributed in a cross shape around the CFG pile (1).

4. The high-rise building cast-in-place CFG pile composite foundation structure according to claim 3, characterized in that: The positioning component (2) is a concrete component, and the positioning plate (9) is integrally formed with the top plate (8).

5. The high-rise building cast-in-place CFG pile composite foundation structure according to claim 4, characterized in that: The positioning component (2) is provided with a steel frame (7), and the steel frame (7) penetrates the CFG pile (1).

6. The high-rise building cast-in-place CFG pile composite foundation structure according to claim 2, characterized in that: The precast slab (4) is a concrete component, and the precast slab (4) is fixedly connected to the top of the top plate (8) by several bolts.

7. The high-rise building cast-in-place CFG pile composite foundation structure according to claim 2, characterized in that: Angle steel (10) is fixedly connected to each of the four corners of the support frame (3), and the angle steel (10) is fitted with the longitudinal corner of the top plate (8) with clearance.

8. The high-rise building cast-in-place CFG pile composite foundation structure according to claim 1, characterized in that: The support frame (3) and the gaps between the positioning components (2) are filled with mattress layers (5).

9. The high-rise building cast-in-place CFG pile composite foundation structure according to claim 8, characterized in that: A cement soil layer (6) is laid on the upper side of the mattress layer (5).

10. The high-rise building cast-in-place CFG pile composite foundation structure according to claim 1, characterized in that: The support frame (3) is made of steel.

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