Combined pile wall type supporting structure

Abstract

The utility model discloses a combined pile wall type supporting structure, which belongs to the technical field of combined piles and comprises a vertical pile body, a concrete filling bin is fixedly mounted at the upper end of the vertical pile body, a prestress protection mechanism is arranged in the middle of the vertical pile body, and a supporting mechanism is arranged at the lower end of the vertical pile body. A first supporting rod, a second supporting rod and third supporting rods are fixedly installed at the lower end of the vertical pile body, a cross beam body is fixedly installed in the middle of the vertical pile body, third steel base plates are fixedly installed on the cross beam body, third grouting pipes are fixedly installed at the rear ends of the third steel base plates, and the third grouting pipes are fixedly installed on the third steel base plates. The combined pile wall type supporting structure is composed of a vertical pile body, a prestress protection mechanism, a supporting mechanism and a concrete filling bin, a vertical bearing system is constructed through the vertical pile body, the prestress protection mechanism forms a deep active supporting net, the supporting mechanism achieves dynamic adjustment of the middle layer, and the concrete filling bin completes rigid sealing of the upper layer; and a full-depth gradient and multi-level collaborative intelligent support system is formed.

Description

Technical Field

[0001] This utility model relates to the field of combined pile technology, specifically a combined pile wall support structure. Background Technology

[0002] Composite piles are a type of composite pile foundation technology that combines piles of different materials, structural forms, or construction techniques (such as precast concrete piles and steel pipe piles) to achieve synergistic force bearing by leveraging their respective advantages. Common forms include upper and lower segment combinations, inner and outer sleeve combinations, or simultaneous construction combinations. The core of this technology lies in the complementary properties of materials (such as compressive and tensile strength) or the superposition of processes (such as rapid construction of precast piles and the adaptation of cast-in-place piles to complex strata). This technology can improve engineering performance such as bearing capacity, control settlement, and enhance pull-out / lateral force resistance, while also taking into account construction efficiency and economy. It is particularly suitable for complex working conditions such as soft soil foundations, deep backfill layers, and karst geology, as well as engineering scenarios with stringent requirements for the comprehensive performance of pile foundations, such as high-rise buildings, bridges, and offshore platforms.

[0003] Existing composite pile wall support structures are usually monolithic structures, ignoring the influence of soil at different heights on the composite piles. This can easily lead to unexpected situations where the composite piles collapse. Specifically, the soil pressure increases linearly with depth. The lower soil layer bears the weight of the entire overburden, so its static, active, and passive soil pressures are all significantly higher than those of the upper layer. The soil pressure in the middle layer is between the upper and lower layers. Because it is at the middle depth, the overburden load it receives is less than that of the lower layer but higher than that of the upper layer. The upper layer has the thinnest overburden and the lowest soil pressure value.

[0004] Based on this, the present invention designs a combined pile wall support structure to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a combined pile wall support structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A composite pile wall support structure includes a pile body, a concrete filling chamber fixedly installed at the upper end of the pile body, a prestressed protection mechanism provided in the middle of the pile body, and a support mechanism provided at the lower end of the pile body. The support mechanism includes a first strut, a second strut, and a third strut. The first strut, the second strut, and the third strut are fixedly installed at the lower end of the pile body. The prestressed protection mechanism includes a crossbeam, a third steel pad, and a third grouting pipe. The crossbeam is fixedly installed in the middle of the pile body, and the third steel pad is fixedly installed on the crossbeam. The third grouting pipe is fixedly installed at the rear end of the third steel pad, and multiple third grouting pipes are fixedly installed on the third steel pad.

[0008] Optionally, the first support rod is fixedly installed at the front end of the pile body, the second support rod is fixedly installed at the left end of the pile body, and the third support rod is fixedly installed at the right end of the pile body.

[0009] Optionally, a first steel pad is provided above the first support rod, and a first grouting pipe is fixedly installed at the rear end of the first steel pad. Multiple first grouting pipes are fixedly installed on the first steel pad.

[0010] Optionally, a second steel pad is provided below the first support rod, and a second grouting pipe is fixedly installed at the rear end of the second steel pad. Multiple second grouting pipes are fixedly installed on the second steel pad.

[0011] Optionally, a connecting rod is provided on the outer side of both the second and third support rods, and every two of the pile bodies are connected by the connecting rod.

[0012] Optionally, the prestressed protection mechanism further includes a connecting frame and a support rod, wherein the connecting frame is fixedly installed at the front end of the third steel pad, and the support rod is provided at the front end of the connecting frame.

[0013] Optionally, a connecting column is fixedly installed in the middle of the two support rods, and a rotating rod body is installed between the support rod and the connecting frame. A limit nut is threaded to the outer side of the rotating rod body, and the support rod is connected to the connecting frame through the rotating rod body.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this utility model, a prestressed protection mechanism is provided. The synergistic effect of the pile body and the prestressed protection mechanism significantly improves the deep protection performance. The pile body adopts a high-strength concrete precast pile body, and its longitudinal penetration characteristics can effectively transfer the load of each layer to the bearing layer. The prestressed protection mechanism uses a spatial triangular support system constructed by three-way struts to convert the deep lateral soil pressure into the axial pressure of the struts. The composite anchoring layer formed by two sets of grouting anchors can improve the anchoring force and avoid soil damage caused by stress concentration.

[0016] 2. In this utility model, a support mechanism is provided. The combination of the support mechanism and the concrete filling chamber achieves the unity of adjustment and rigid reinforcement. The crossbeam connects multiple vertical piles to form a transverse support skeleton. The third grouting pipe injects grout to solidify the middle layer of soil. The rotating rod body adjusts the side support formed by the support rod and the connecting column. The optimal support state is locked by the limit nut, so that the support rod and the soil form an oblique force system to distribute the load. The concrete filling chamber at the top inhibits the slippage of shallow soil. Attached Figure Description

[0017] Figure 1 This is a three-dimensional front view structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model from a frontal view.

[0019] Figure 3 This is a schematic diagram of the three-dimensional rear view structure of this utility model;

[0020] Figure 4 This is a three-dimensional top view of the structure of this utility model;

[0021] Figure 5 This is a three-dimensional left-side view structural schematic diagram of the present invention;

[0022] Figure 6 This is a three-dimensional right-view structural schematic diagram of the present invention;

[0023] Figure 7 This is a three-dimensional sectional view of the present invention.

[0024] In the diagram: 1. Pile body; 2. Prestressed protection mechanism; 201. First support rod; 202. Second support rod; 203. Third support rod; 204. First steel pad; 205. First grouting pipe; 206. Second steel pad; 207. Second grouting pipe; 208. Connecting rod; 3. Support mechanism; 301. Crossbeam body; 302. Third steel pad; 303. Third grouting pipe; 304. Connecting frame; 305. Support rod; 306. Connecting column; 307. Rotating rod body; 308. Limiting nut; 4. Concrete filling chamber. Detailed Implementation

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-7 In this embodiment of the utility model, a combined pile wall support structure includes a pile body 1, a concrete filling chamber 4 fixedly installed at the upper end of the pile body 1, a support mechanism 3 provided in the middle of the pile body 1, and a prestressed protection mechanism 2 provided at the lower end of the pile body 1. The prestressed protection mechanism 2 includes a first support rod 201, a second support rod 202, and a third support rod 203. The first support rod 201 is fixedly installed at the front end of the pile body 1, the second support rod 202 is fixedly installed at the left end of the pile body 1, and the third support rod 203 is fixedly installed at the left end of the pile body 1. Installed on the right end of the pile body 1, a first steel pad 204 is set above the first support rod 201, a first grouting pipe 205 is fixedly installed at the rear end of the first steel pad 204, and multiple first grouting pipes 205 are fixedly installed on the first steel pad 204. A second steel pad 206 is set below the first support rod 201, a second grouting pipe 207 is fixedly installed at the rear end of the second steel pad 206, and multiple second grouting pipes 207 are fixedly installed on the second steel pad 206. A connecting rod 208 is set on the outer side of the second support rod 202 and the third support rod 203, and every two pile bodies 1 are connected by the connecting rod 208.

[0029] The pile body 1 and the prestressed protection mechanism 2 complement each other to form a high-strength protective structure for the subsoil layer, which can effectively resist the lateral compression of deep soil. During installation, the installation position of the grouting pipe is first measured and determined, and holes are drilled using drilling equipment. Then, multiple pile bodies 1, along with the first support rod 201, second support rod 202, and third support rod 203 at the lower end of the pile body 1, are installed on the surface of the soil wall. Next, the first steel pad 204, the first grouting pipe 205, the second steel pad 206, and the third grouting pipe 203 are installed. Two grouting pipes 207 form two sets of prestressed anchor cable structures, thus completing the installation operation of the lower layer; the prestressed protection mechanism 2 is an active protection system for the high soil pressure in the lower layer, in which the first support rod 201, the second support rod 202 and the third support rod 203 form a three-sided triangular support structure, which directly balances the deep lateral soil pressure; the prestressed anchor cable structure of the first steel pad 204, the first grouting pipe 205, the second steel pad 206 and the second grouting pipe 207 can solidify the loose soil and improve the support strength;

[0030] The support mechanism 3 includes a crossbeam 301, a third steel pad 302, and a third grouting pipe 303. The crossbeam 301 is fixedly installed in the middle of the pile body 1. The third steel pad 302 is fixedly installed on the crossbeam 301. The third grouting pipe 303 is fixedly installed at the rear end of the third steel pad 302. Multiple third grouting pipes 303 are fixedly installed on the third steel pad 302. The support mechanism 3 also includes a connecting frame 304 and a support rod 305. The connecting frame 304 is fixedly installed at the front end of the third steel pad 302. The support rod 305 is provided at the front end of the connecting frame 304. A connecting column 306 is fixedly installed in the middle of the two support rods 305. A rotating rod body 307 is installed between the support rod 305 and the connecting frame 304. The outer side of the rotating rod body 307 is threaded with a limit nut 308. The support rod 305 is connected to the connecting frame 304 through the rotating rod body 307.

[0031] The pile body 1, the support mechanism 3, and the concrete filling chamber 4 together form the protective structure for the upper and middle soil layers. The pile body 1, as the vertical main load-bearing structure, penetrates the entire depth of the soil layer, bearing the soil pressure and surcharge transmission. The length of the support rod 305 inside the support mechanism 3 can be determined according to the situation. The support rod 305 and the crossbeam 301 form a support structure, which can effectively improve the compressive strength of the crossbeam 301 and support the middle soil layer. The concrete filling chamber 4 is used to fill concrete to consolidate the upper soil layer and reduce the probability of soil erosion. During installation, the support mechanism 3 is first adjusted, and the third grouting pipe 303 inside the support mechanism 3 is embedded into the soil. Then, the state of the support rod 305 is adjusted by the rotating rod body 307 and the limiting nut 308 to improve the support strength of the crossbeam 301. The crossbeam 301 is also used to connect multiple pile bodies 1 to improve the connection strength between the pile bodies 1. After the adjustment operation of the support mechanism 3 is completed, concrete is filled into the concrete filling chamber 4.

[0032] The working principle of this utility model is as follows: First, the pile body 1, as a vertical main bearing frame, penetrates the entire depth of the soil layer. The lower end forms a high-strength lower layer protection system through the prestressed protection mechanism 2. During installation, the first support rod 201, the second support rod 202, and the third support rod 203 form a triangular support frame. Two sets of first grouting pipes 205 and second grouting pipes 207 are connected by the first steel pad 204 and the second steel pad 206, respectively. Cement grout is injected into the deep soil to form a double prestressed anchor cable structure, which solidifies the loose soil and resists lateral compression. At the same time, the connecting rod 208 connects the adjacent pile bodies 1 laterally to form a whole. The mesh structure strengthens the middle layer protection through the support mechanism 3 in the middle section. The crossbeam 301 connects multiple vertical piles 1 to form a transverse support skeleton. The third grouting pipe 303 injects grout to solidify the middle layer soil. The rotating rod 307 adjusts the side support formed by the support rod 305 and the connecting column 306. The optimal support state is locked by the limit nut 308, so that the support rod 305 and the soil form an oblique force system to distribute the load. The concrete filling chamber 4 at the top inhibits the slippage of shallow soil. The whole system achieves three-dimensional protection with matching soil pressure gradient through the three-level synergistic action of lower active anchoring, middle adjustable support, and upper pressure cover.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A composite pile wall support structure, comprising pile bodies (1), characterized in that: A concrete filling chamber (4) is fixedly installed at the upper end of the pile body (1), a support mechanism (3) is provided in the middle of the pile body (1), and a prestressed protection mechanism (2) is provided at the lower end of the pile body (1). The prestressed protection mechanism (2) includes a first support rod (201), a second support rod (202), and a third support rod (203). The first support rod (201), the second support rod (202), and the third support rod (203) are fixedly installed at the lower end of the pile body (1). 03), the support mechanism (3) includes a crossbeam (301), a third steel pad (302) and a third grouting pipe (303). The crossbeam (301) is fixedly installed in the middle of the pile body (1). The third steel pad (302) is fixedly installed on the crossbeam (301). The third grouting pipe (303) is fixedly installed at the rear end of the third steel pad (302). Multiple third grouting pipes (303) are fixedly installed on the third steel pad (302).

2. The composite pile-wall support structure according to claim 1, characterized in that: The first support rod (201) is fixedly installed at the front end of the pile body (1), the second support rod (202) is fixedly installed at the left end of the pile body (1), and the third support rod (203) is fixedly installed at the right end of the pile body (1).

3. The composite pile-wall support structure according to claim 1, characterized in that: A first steel pad (204) is provided above the first support rod (201), and a first grouting pipe (205) is fixedly installed at the rear end of the first steel pad (204). Multiple first grouting pipes (205) are fixedly installed on the first steel pad (204).

4. The composite pile-wall support structure according to claim 1, characterized in that: A second steel pad (206) is provided below the first support rod (201), and a second grouting pipe (207) is fixedly installed at the rear end of the second steel pad (206). Multiple second grouting pipes (207) are fixedly installed on the second steel pad (206).

5. A composite pile-wall support structure according to claim 1, characterized in that: The second support rod (202) and the third support rod (203) are both provided with connecting rods (208) on their outer sides, and each pair of the pile bodies (1) are connected by the connecting rods (208).

6. A composite pile-wall support structure according to claim 1, characterized in that: The support mechanism (3) further includes a connecting frame (304) and a support rod (305). The connecting frame (304) is fixedly installed at the front end of the third steel pad (302), and the support rod (305) is provided at the front end of the connecting frame (304).

7. A composite pile-wall support structure according to claim 6, characterized in that: A connecting column (306) is fixedly installed in the middle of the two support rods (305). A rotating rod body (307) is installed between the support rod (305) and the connecting frame (304). A limit nut (308) is threaded on the outer side of the rotating rod body (307). The support rod (305) is connected to the connecting frame (304) through the rotating rod body (307).

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