Annular water jet cutter component for PC steel pipe pile
By using annular water drilling member in steel pipe piles and using multiple injection heads and annular water drilling ring pipes to form an annular cutting surface, the problems of low efficiency and insufficient uniformity of existing water drilling members are solved, and the steel pipe piles are realized Efficiency, even cutting and construction efficiency improvement.
Patent Information
- Application Number
- CN202421037235.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-13
AI Technical Summary
The existing water drill components have low efficiency in cutting soil in steel pipe pile construction and insufficient uniformity, which cannot effectively ensure the pile formation quality and construction efficiency of steel pipe piles.
The annular water drill member is adopted, including the annular water drill ring pipe and multiple spaced-connected jet heads to form an annular cutting surface and provide a water source through the water injection pipe. The jet head is designed to be eccentric to avoid fluid stickiness and ensure water flow energy , combined with water stop lock buckle and seamless steel pipe structure to improve cutting efficiency and uniformity.
It realizes efficient and uniform cutting of steel pipe piles, improves construction efficiency and quality, reduces pile end resistance, avoids pile body damage, and significantly improves construction rate and economic benefits.
Smart Images
Figure CN222252066U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of civil engineering construction devices, in particular to an annular water jet component for PC steel pipe piles. Background Art
[0002] In the process of urban underground engineering construction, due to the narrow site, vertical support is mostly used for foundation pit support. In traditional vertical support projects, concrete bored piles are generally used for support. Concrete bored piles cannot be used repeatedly in the project, and the use of concrete bored piles requires a large amount of cement. The preparation of cement consumes a lot of energy and emits a lot of greenhouse gases. In order to save engineering costs, recyclable Larsen steel sheet piles and steel pipe piles are now mostly used in projects. When the support depth is deep, the horizontal active earth pressure is large, and the bending stiffness of the Larsen steel sheet pile cannot meet the requirements. At this time, the steel pipe pile support form that meets the requirements is selected.
[0003] In order to ensure the quality and construction efficiency of steel pipe piles, reduce the side friction of steel pipe piles in soil layers with higher bearing capacity and destroy the vertical upward resistance of the soil seal formed by the compaction of the soil at the end of the steel pipe pile, it is necessary to set a water jet inside the steel pipe pile. The existing water jet components are usually point cutting, and the water jet cutting efficiency of the water jet is low and the uniformity is insufficient, which cannot well ensure the quality of the steel pipe piles. Utility Model Content
[0004] The utility model aims to provide an annular water jet component for PC steel pipe piles, which solves the technical problems of low efficiency and insufficient uniformity in cutting soil by water jet components in the prior art.
[0005] The present application discloses an annular water jet component for a PC steel pipe pile, comprising:
[0006] Steel pipe piles;
[0007] A water jet ring tube, which is annular and installed at the end of the steel pipe pile;
[0008] A plurality of spray heads are arranged in the water knife ring tube in a spaced manner and are distributed in a spaced manner along the circumferential direction of the water knife ring tube;
[0009] A water injection pipe is installed outside the steel pipe pile, and the water injection pipe is connected to the water knife ring pipe.
[0010] The present application sets up multiple injection heads, combined with a water knife ring tube, to form an annular cutting surface, thereby ensuring cutting efficiency and cutting uniformity.
[0011] Based on the above technical solution, the present application can also be improved as follows:
[0012] Furthermore, it also includes a water-stop lock buckle, which is arranged on the outside of the steel pipe pile. The beneficial effect of adopting this step is to ensure the stability of the overall structure.
[0013] Furthermore, the injection head and the water jet ring tube are integrally formed, and the beneficial effect of adopting this step is that it facilitates the assembly of the structure.
[0014] Furthermore, the water outlet end of the injection head is in an eccentric position. The beneficial effect of adopting this step is that the water outlet is slightly away from the inner wall of the steel pipe pile, preventing the water flow from being too fast and causing fluid viscosity, thereby ensuring the kinetic energy of the water flow.
[0015] Furthermore, there are at least 6 injection heads, and the injection heads are close to the center line of the water knife ring tube. The beneficial effect of adopting this step is that the cutting efficiency can be improved through the contraction structure.
[0016] Furthermore, the water injection pipe and the water knife ring pipe are both seamless steel pipes. The beneficial effect of adopting this step is to ensure the strength of the structure.
[0017] Furthermore, the plane where the injection head is located is lower than the plane where the bottom end of the steel pipe pile is located. The beneficial effect of adopting this step is to ensure cutting efficiency.
[0018] One or more technical solutions provided by this application have at least the following technical effects or advantages:
[0019] 1. The present application provides multiple spray heads and arranges them in a ring shape, thereby achieving surface cutting and improving cutting efficiency.
[0020] 2. The position and structure of the jet head in this application are designed to ensure the kinetic energy of the water flow and the cutting efficiency.
[0021] 3. The raw materials for this application are easy to obtain, which is conducive to achieving low-carbon measures, is simple to make, and can be recycled, with obvious economic effects.
[0022] 4. This application adopts an annular water jet component, and the jet head of the high-pressure water jet can evenly and effectively spray high-pressure water slurry into the soil. Compared with the previous state without water jet and single water jet, the construction speed and quality of the PC method are greatly improved, resulting in good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0024] Figure 1 This is a structural schematic diagram of an annular water jet component for PC steel pipe piles according to a specific embodiment of the utility model;
[0025] Figure 2 for Figure 1 Schematic diagram of the structure of the water jet ring tube;
[0026] Figure 3 for Figure 2 The structural diagram of the middle injection head;
[0027] Reference numerals:
[0028] 1-Steel pipe pile; 2-Water jet ring pipe; 3-Jet head; 4-Water injection pipe; 5-Water stop lock. DETAILED DESCRIPTION
[0029] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.
[0030] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.
[0031] In the description of the present application, it should be understood that the terms "upper", "lower", etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0032] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0033] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0034] Example:
[0035] like Figure 1-3As shown, the present application provides an annular water jet component for PC steel pipe piles, which can evenly and effectively cut the soil at the bottom of the steel pipe piles in the form of a "surface", thereby ensuring the uniformity and efficiency of the water jet cutting of the soil, and improving and ensuring the efficiency and quality of the steel pipe pile construction.
[0036] The utility model adopts the above scheme, and the tool uses the kinetic energy of water flow at high speed to destroy the structure of the soil, so the resistance at the pile end is reduced. At the same time, the water flow produces a thin water film between the pile body and the soil, which reduces the friction between the pile body and the soil and greatly improves the pile sinking efficiency. Compared with the single-head water knife, the annular multi-water knife cuts the soil more evenly. During the pile sinking process, when the soil at the pile end is relatively uniform, the wall of the steel pipe pile is not easy to produce shear deformation, thus avoiding shear damage to the pile body. Using an eccentric structure, the water outlet is slightly away from the inner wall of the steel pipe pile to prevent the water flow from being too fast, causing fluid viscosity and avoiding the loss of kinetic energy of the water flow.
[0037] Then the pile is sunk into the soil by the downward pressure of the excavator, the vibrating sinking and extraction hammer and the deadweight of the pile body. Compared with the traditional single-piece water jet cutting, the circular water jet can evenly and effectively cut the soil at the bottom of the steel pipe pile in the form of a "surface", ensuring the uniformity and efficiency of the water jet cutting of the soil, and improving and guaranteeing the efficiency and quality of the steel pipe pile construction. In the past, if the water jet was not used, the surface of the steel pipe pile was prone to local buckling when encountering a harder clay layer or a dense sand layer. Or simply using a single-point water jet to cut the soil, the cutting height at each position of the pile end is different, and shear force will be generated in the steel pipe pile body during the pile sinking process. The thin wall of the steel pipe pile is prone to shear deformation. When the deformation is large, the pile body will be sheared. The use of circular water jet components avoids the damage of the steel pipe pile body, and also ensures the verticality of the pile sinking, the soil cutting efficiency and the construction rate of the steel pipe pile.
[0038] The specific structure of this application includes:
[0039] Steel pipe pile 1, which is an existing component and will not be described in detail here;
[0040] A water knife ring tube 2, which is annular and installed at the end of the steel pipe pile 1. The water knife ring tube 2 cooperates with the subsequent injection head 3 to split the soil more quickly and increase the efficiency of cutting the soil;
[0041] A plurality of injection heads 3 are arranged in the water knife ring tube 2 at intervals and are distributed at intervals along the circumferential direction of the water knife ring tube 2. The injection heads 3 are convenient for subsequent formation of high-pressure water flow and can form a surface cutting form, thereby improving the cutting efficiency;
[0042] A water injection pipe 4 is installed outside the steel pipe pile 1 and is connected to the water knife ring pipe 2; the water injection pipe 4 is used to provide a corresponding water source to facilitate subsequent cutting.
[0043] The present application can form a surface cutting by using multiple injection heads 3, thereby ensuring the uniformity and efficiency of cutting the soil.
[0044] In one embodiment, the present application further includes a water-stop lock buckle 5, and the water-stop lock buckle 5 is arranged on the outside of the steel pipe pile 1, so as to ensure the stability of the overall structural assembly.
[0045] In yet another embodiment, Figure 2 As shown, the injection head 3 and the water jet ring tube 2 are integrally formed, which facilitates assembly and ensures structural stability.
[0046] Among them, Figure 2 As shown, the water outlet end of the injection head 3 is in an eccentric position. The structure of the injection head 3 of the present application is further explained. The specific eccentric direction is set away from the inner side of the steel pipe pile 1. Specifically, the water outlet end deviates from the center line by 10 mm. This prevents the water flow from being too fast, causing fluid viscosity and weakening the kinetic energy of the water flow.
[0047] There are at least six injection heads 3, and the injection heads 3 are close to the center line of the water knife ring tube 2, so that a contraction style structure can be formed, which can effectively increase the water flow pressure, split the soil more quickly, and increase the efficiency of cutting the soil.
[0048] In another embodiment, the water injection pipe 4 and the water knife ring pipe 2 are both seamless steel pipes, with a specific size of φ32 and a wall thickness of 3.5 mm. The steel pipe support of this size can ensure the stability of the structure.
[0049] The plane where the injection head 3 is located is lower than the plane where the bottom end of the steel pipe pile 1 is located, so that the cutting effect can be ensured.
[0050] Further explanation for this application:
[0051] The present application mainly uses multiple jet heads to evenly and effectively cut the soil at the bottom of the steel pipe pile in the form of a "surface", ensuring the uniformity and efficiency of water jet cutting of the soil, and improving and ensuring the efficiency and quality of steel pipe pile construction. At the same time, the present application uses seamless steel pipes to ensure the stability and strength of the overall device structure.
[0052] The components of the present application are connected by welding to ensure the stability of the overall structure.
[0053] The annular water jet component provided in the present application can ensure the steel pipe pile support effect and construction efficiency during the steel pipe pile sinking construction process. The principle is that the high-pressure water generated by the power pump cuts into the hard clay layer (or dense sand layer) through the water jet head through the pressure pipe, forming a gap between the pile bottom and the soil to reduce the sinking resistance of the pile end, and the high-speed water flow ejected forms a water film along the soil and the pile body; under the combined action of the vibrating hammer and the water jet, the friction resistance between the pile side and the soil and the pile end resistance are reduced, and then the pile is sunk into the soil by the downward pressure of the excavator, the vibrating sinking hammer and the deadweight of the pile body. Compared with the traditional single-piece water jet cutting, the annular water jet can evenly and effectively cut the soil at the bottom of the steel pipe pile in the form of a "surface", ensuring the uniformity and efficiency of the water jet cutting of the soil, and improving and ensuring the efficiency and quality of the steel pipe pile construction. In the past, if the water jet was not used, the surface of the steel pipe pile was prone to local buckling when encountering a hard clay layer or a dense sand layer. Or simply using a single-point water jet to cut the soil, the cutting heights at different positions of the pile end are different. During the pile sinking process, the steel pipe pile body will generate shear force. The thin wall of the steel pipe pile is prone to shear deformation. When the deformation is large, the pile body will be sheared. The use of annular water jet components avoids the damage of the steel pipe pile body and also ensures the verticality of the pile sinking, the soil cutting efficiency and the construction rate of the steel pipe pile.
[0054] The present application provides a high-pressure water jet head, and the water jet mouth presents a contraction pattern. According to the Bernoulli equation, the water flow velocity becomes faster, the kinetic energy of the water is increased when it flows out, the ability to split the soil becomes stronger, and the efficiency of cutting the soil is increased. At the same time, the water jet outlet is designed to be an eccentric structure, and the outlet is slightly away from the inner wall of the steel pipe pile to prevent the water jet velocity from being too fast, causing fluid viscosity, and avoiding the loss of kinetic energy of the water flow.
[0055] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.
[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.
Claims
1. An annular water jet component for PC steel pipe piles, characterized in that: include: Steel pipe piles; A water jet ring tube, which is annular and installed at the end of the steel pipe pile; A plurality of spray heads are arranged in the water knife ring tube in a spaced manner and are distributed in a spaced manner along the circumferential direction of the water knife ring tube; A water injection pipe is installed outside the steel pipe pile, and the water injection pipe is connected to the water knife ring pipe.
2. The annular water jet component for PC steel pipe pile according to claim 1, characterized in that: It also includes a water-stop lock buckle, which is arranged on the outside of the steel pipe pile.
3. The annular water jet component for PC steel pipe pile according to claim 1, characterized in that: The injection head and the water knife ring tube are integrally formed.
4. The annular water jet component for PC steel pipe pile according to claim 3, characterized in that: The water outlet end of the spray head is at an eccentric position.
5. The annular water jet component for PC steel pipe pile according to claim 4, characterized in that: There are at least six injection heads, and the injection heads are close to the center line of the water knife ring tube.
6. The annular water jet component for PC steel pipe pile according to claim 1, characterized in that: The water injection pipe and the water knife ring pipe are both seamless steel pipes.
7. The annular water jet component for PC steel pipe pile according to claim 1, characterized in that: The plane where the injection head is located is lower than the plane where the bottom end of the steel pipe pile is located.