A kind of soft soil foundation assembled solid waste concrete pile raft foundation

Abstract

The utility model relates to pile raft foundation structure technical field discloses a kind of for soft soil foundation fabricated solid waste concrete pile raft foundation, comprising: prefabricated raft, prefabricated raft is formed by the splicing of multiple prefabricated boards;Special-shaped splicing piece, special-shaped splicing piece is arranged in prefabricated board circumferential side, and adjacent prefabricated board is mutually spliced by special-shaped splicing piece and is engaged;Fixed connecting piece, fixed connecting piece is arranged on prefabricated board, and fixed connecting piece is used to fix prefabricated board. Through special-shaped splicing piece, it is realized to quickly splice, without complex positioning in situ formwork, can shorten construction period, reduce human labor intensity;Fixed connecting piece is fixed through prefabricated board and prefabricated board, and the bearing capacity of foundation is improved, effectively resist soft soil foundation uneven settlement;Fixed connecting piece and prefabricated board are made of solid waste concrete material, can be received solid waste, reduce environmental pollution.

Description

Technical Field

[0001] This utility model relates to the field of pile-raft foundation technology, and more specifically, to a prefabricated solid waste concrete pile-raft foundation for soft soil foundations. Background Technology

[0002] In the field of building foundations, pile-raft foundations are a structural form that uses piles to transfer the upper load to the deep foundation and uses the raft slab to distribute the load. They are especially suitable for scenarios with low bearing capacity, such as soft soil foundations.

[0003] However, existing technologies have the following significant drawbacks in practical applications: traditional pile-raft foundations are prone to uneven settlement in soft soil foundations due to insufficient bearing capacity, affecting structural stability; on-site pouring construction requires cumbersome procedures such as formwork, steel bar binding, and pouring, which not only requires a large investment of manpower and resources and a long construction period, but also often results in quality problems such as honeycomb and pitted surfaces due to human operation or material fluctuations; in addition, the environmental pollution caused by the dumping of construction solid waste and the insufficient utilization rate of solid waste resources by traditional concrete materials have also become contradictions that the industry urgently needs to solve.

[0004] Therefore, there is a need for a prefabricated solid waste concrete pile raft foundation for soft soil foundations. Utility Model Content

[0005] The purpose of this invention is to provide a prefabricated solid waste concrete pile raft foundation for soft soil foundations to solve the problems existing in the prior art.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides a prefabricated solid waste concrete pile raft foundation for soft soil foundations, comprising: a prefabricated raft slab, which is composed of multiple prefabricated slabs spliced ​​together; irregularly shaped splicing members, which are disposed on the periphery of the prefabricated slabs, and adjacent prefabricated slabs are spliced ​​and interlocked with each other through the irregularly shaped splicing members; and a fixing connector, which is disposed on the prefabricated slabs and is used to fix the prefabricated slabs; wherein, both the prefabricated slabs and the fixing connectors are made of solid waste concrete.

[0007] According to the present invention, a prefabricated solid waste concrete pile raft foundation for soft soil foundation is provided, wherein the irregular splicing component includes a convex semi-cylinder and a concave semi-cylinder. The convex semi-cylinder and the concave semi-cylinder are the same in size and shape, and the convex semi-cylinder and the concave semi-cylinder are distributed at intervals on the periphery of the precast slab. The convex semi-cylinder and the concave semi-cylinder of adjacent precast slabs are interlocked and spliced ​​with each other in a complementary state.

[0008] According to the present invention, a prefabricated solid waste concrete pile raft foundation for soft soil foundation is provided. The fixed connection includes a fixed pile, which is fixedly connected to the precast slab. A grouting sleeve is pre-embedded in the fixed pile. A steel pipe is provided in the grouting sleeve for inserting connecting steel bars and fixing the precast slab with grout.

[0009] According to the present invention, a prefabricated solid waste concrete pile raft foundation for soft soil foundation is provided, wherein a grouting sleeve is provided with a grouting port and a grouting outlet at both ends, and a connecting sleeve is provided inside the grouting sleeve, the connecting sleeve being connected to the grouting port and the grouting outlet.

[0010] According to the present invention, a prefabricated solid waste concrete pile raft foundation for soft soil foundation is provided, wherein the fixed connection further includes a pile column, the pile column is fixedly connected below the precast slab, and the fixed pile, the precast slab and the pile column are located on the same vertical line.

[0011] According to the present invention, a prefabricated solid waste concrete pile raft foundation for soft soil foundation is provided, wherein adhesive tape is provided at the splicing joints of the prefabricated slabs.

[0012] The present invention discloses the following technical effects:

[0013] In this invention, adjacent precast slabs are quickly spliced ​​together using irregularly shaped splicing parts, eliminating the need for on-site formwork and complex positioning, thus shortening the construction cycle and reducing labor intensity. The fixing connectors penetrate the precast slabs and fix them in place, improving the bearing capacity of the foundation and effectively resisting uneven settlement of soft soil foundations. Both the fixing connectors and the precast slabs are made of solid waste concrete, which can dispose of solid waste and reduce environmental pollution. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.

[0015] Figure 1 This is a schematic diagram of the structure of a raft slab composed of several prefabricated slabs in this utility model;

[0016] Figure 2 This is a partial structural diagram of the present invention during implementation;

[0017] Figure 3 This is a schematic diagram of the precast slab structure in this utility model;

[0018] Figure 4This is a front view of the precast slab in this utility model;

[0019] Figure 5 This is a top view of the precast slab in this utility model;

[0020] Figure 6 This is a schematic diagram of the grouting sleeve in this utility model;

[0021] Among them, 1. fixed pile; 2. grouting sleeve; 2-1. grouting port; 2-2. steel reinforcement pipe; 2-3. grout discharge port; 2-4. connecting sleeve; 3. precast slab; 3-1. convex semi-cylinder; 3-2. concave semi-cylinder; 4. pile column; 5. connecting steel reinforcement; 6. solid waste concrete; 7. tape. Detailed Implementation

[0022] 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.

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figures 1 to 6 As shown, this utility model provides a prefabricated solid waste concrete pile raft foundation for soft soil foundation, comprising: a prefabricated raft slab, which is composed of multiple prefabricated slabs 3 spliced ​​together; irregular splicing components, which are disposed on the periphery of the prefabricated slabs 3, and adjacent prefabricated slabs 3 are spliced ​​and interlocked with each other through the irregular splicing components; and a fixing connector, which is disposed on the prefabricated slabs 3 and is used to fix the prefabricated slabs 3; wherein, both the prefabricated slabs 3 and the fixing connectors are made of solid waste concrete.

[0025] The precast raft foundation is an integral raft foundation formed by splicing multiple precast slabs 3. The precast slabs 3 are formed by post-casting solid waste concrete 6, and irregular splicing parts are set on its periphery. Adjacent precast slabs 3 are spliced ​​together by interlocking irregular splicing parts.

[0026] The irregular connectors include a convex semi-cylinder 3-1 and a concave semi-cylinder 3-2. The convex semi-cylinder 3-1 and the concave semi-cylinder 3-2 are integrally formed with the precast slab 3. The convex semi-cylinder 3-1 and the concave semi-cylinder 3-2 are respectively connected and arranged on the periphery of the precast slab 3. The two have the same size and shape. When splicing, the convex semi-cylinder 3-1 and the concave semi-cylinder 3-2 on adjacent precast slabs 3 complement each other and interlock along the circumferential direction to form horizontal positioning and constraint, thereby realizing the rapid positioning of the precast slab 3.

[0027] A deep sealing groove is set at the joint of the precast slab 3 for attaching waterproof tape 7 to prevent grout leakage during grouting or post-poured concrete. The tape 7 and the sealing groove work together to form a double leak-proof structure to avoid structural weaknesses caused by grout leakage.

[0028] The fixed connection includes a fixed pile 1 and a pile column 4. The fixed pile 1 is vertically fixed to the upper surface of the precast slab 3, and a grouting sleeve 2 is pre-embedded inside. The grouting sleeve 2 has a grouting port 2-1 and a grout discharge port 2-3 at both ends. The inside is connected to a reinforcing steel pipe 2-2 through a connecting sleeve 2-4. The reinforcing steel pipe 2-2 is used to insert connecting reinforcing bars 5 and is initially fixed by rubber gaskets, and then fixed by grouting material. The reinforcing steel pipe 2-2 passes through the fixed pile 1. The pile column 4 is vertically fixed to the lower surface of the precast slab 3 and is located on the same vertical line as the fixed pile 1 and the precast slab 3. A suitable pile driving construction scheme is selected to ensure that the pile column 4 can be driven vertically. After the pile column 4 is inserted into the foundation, it transmits the load.

[0029] The connecting steel bar 5 is inserted into the steel pipe 2-2 of the grouting sleeve 2. High-strength grout is injected from the grouting port 2-1 until no air bubbles overflow from the grout outlet 2-3. The grout outlet 2-3 is then sealed with a rubber stopper. Grouting is continued for 10 minutes at a pressure of 0.1 MPa. The grouting pipe at the grouting port 2-1 is then pulled out and the grouting port 2-1 is quickly sealed with a rubber stopper at an interval of no more than 1 second, so that the connecting steel bar 5 forms a rigid connection with the grouting sleeve 2 and the precast slab 3. After pouring, solid waste concrete 6 is poured to cover the fixing pile 1, integrating the precast slab 3, the fixing connectors, and the connecting steel bar into an integral pile raft foundation. The load is transferred to the foundation through the fixing pile 1, the precast raft slab, and the pile column 4. The solid waste concrete 6 here is high-strength solid waste concrete that meets the project requirements and is different from the solid waste concrete material used in the precast slab 3 and the fixing connectors.

[0030] This embodiment can improve the stability of pile-raft foundations during use. By adopting a prefabrication method, the construction process of pile-raft foundations is simplified, and the manpower, material resources and construction time required for construction are reduced. By using solid waste concrete, the economic cost of engineering construction is reduced and environmental problems are alleviated.

[0031] The precast slabs 3, fixed columns 1, pile columns 4, and post-cast cement all use concrete materials that meet the project requirements and incorporate solid waste such as fly ash, coal gangue, and construction waste, so as to achieve the purpose of disposing of solid waste and reducing environmental pollution.

[0032] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0033] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A prefabricated solid waste concrete pile-raft foundation for soft soil foundations, characterized in that, include: The precast raft slab is composed of multiple precast slabs (3) spliced ​​together; Irregular splicing parts are provided on the periphery of the precast slab (3), and adjacent precast slabs (3) are spliced ​​and interlocked with each other through the irregular splicing parts; A fixing connector is provided on the precast slab (3) and is used to fix the precast slab (3). The precast slab (3) and the fixed connector are both made of solid waste concrete.

2. The prefabricated solid waste concrete pile raft foundation for soft soil foundation according to claim 1, characterized in that: The irregular splicing component includes a convex semi-cylinder (3-1) and a concave semi-cylinder (3-2). The convex semi-cylinder (3-1) and the concave semi-cylinder (3-2) are the same in size and shape. The convex semi-cylinder (3-1) and the concave semi-cylinder (3-2) are distributed at intervals on both sides of the precast plate (3). The convex semi-cylinder (3-1) and the concave semi-cylinder (3-2) of the adjacent precast plate (3) are spliced ​​and interlocked with each other in a complementary state.

3. The prefabricated solid waste concrete pile raft foundation for soft soil foundation according to claim 1, characterized in that: The fixed connection includes a fixed pile (1), which is fixedly connected to the precast slab (3). A grouting sleeve (2) is pre-embedded in the fixed pile (1). A steel pipe (2-2) is provided in the grouting sleeve (2) for inserting connecting steel bars (5) and fixing the precast slab (3) with grouting material.

4. The prefabricated solid waste concrete pile raft foundation for soft soil foundation according to claim 3, characterized in that: The grouting sleeve (2) is provided with a grouting port (2-1) and a grout discharge port (2-3) at both ends. A connecting sleeve (2-4) is provided inside the grouting sleeve (2). The connecting sleeve (2-4) is connected to the grouting port (2-1) and the grout discharge port (2-3).

5. The prefabricated solid waste concrete pile raft foundation for soft soil foundation according to claim 3, characterized in that: The fixed connector also includes a pile (4), which is fixedly connected below the precast slab (3). The fixed pile (1), the precast slab (3) and the pile (4) are located on the same vertical line.

6. The prefabricated solid waste concrete pile raft foundation for soft soil foundation according to claim 1, characterized in that: Adhesive tape (7) is provided at the joint of the precast slab (3).

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