Combined section type steel crown beam of steel pipe pile

Abstract

The utility model belongs to the field of geotechnical engineering, and provides a combined section type steel top beam of a steel pipe pile, which comprises a screw rod and at least two single-side type steel top beams which are respectively arranged on the front side and the rear side of the steel pipe pile. According to the combined section type steel top beam, double-limb I-shaped steel and batten plates are connected to form a combined section type steel section, the combined section type steel top beam is arranged in front of and behind steel pipe piles according to the elevation of the top beam, opposite-pull screws are arranged on the sections between the steel pipe piles, the two ends of each opposite-pull screw are fastened through nuts, and the combined section type steel top beam is tightly attached to the steel pipe piles to enable the steel pipe piles to form a whole. The overall stability of the steel pipe supporting pile is guaranteed, the supporting arrangement requirement is met, construction is convenient and fast, compared with a reinforced concrete structure, the profile steel combined top beam does not need to be maintained, meanwhile, the characteristic that steel can be recycled is fully played, and environment friendliness is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of geotechnical engineering, and in particular relates to a composite cross-section steel crown beam of a steel pipe pile. Background Art

[0002] As the country further promotes the green and environmental protection development strategy, geotechnical engineering is also constantly developing green construction concepts under the dual carbon background. As a temporary project, the supporting components of foundation pit engineering are gradually moving towards recyclability and reuse.

[0003] Steel pipe piles have the advantages of compression resistance, bending resistance and high strength. Therefore, the reuse rate of steel pipe piles is high, which can reduce resource waste and reduce environmental pollution. They are suitable for various soil layers such as soft soil, silt sand, clay, and fill. With its mature processing, convenient construction and recyclable characteristics, they are increasingly widely used in foundation pit projects.

[0004] In order to enhance the integrity of the support piles and the stability of the support system, a cap beam must be set on the top of the pile. At present, the industry mostly uses reinforced concrete cap beams. Since concrete materials are a non-renewable resource and the foundation pit project is a temporary project, it needs to be demolished after the applicable function is over. The resource utilization rate is low, the project cost is high, and the demolition waste will also pollute the environment. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a composite cross-section steel crown beam of a steel pipe pile, which is connected to a composite steel cross-section by a double-leg I-beam and a tie plate. According to the crown beam elevation, it is arranged in front of and behind the steel pipe pile, and tension screws are arranged between the steel pipe piles. The two ends are fastened by nuts. The steel composite crown beam is in close contact with the steel pipe pile to form a whole. It not only ensures the overall stability of the steel pipe support pile, meets the support setting requirements, and is convenient to construct. Compared with reinforced concrete structures, the steel composite crown beam does not require maintenance, and at the same time gives full play to the characteristics of steel being recyclable and reusable, which is green and environmentally friendly.

[0006] To achieve the above object, the utility model adopts the following technical solution: a composite cross-section steel crown beam of a steel pipe pile, comprising a screw and at least two single-side steel crown beams, wherein the two single-side steel crown beams are respectively arranged at the front and rear sides of the steel pipe pile;

[0007] The single-sided steel crown beam includes a gusset plate and at least two I-beams, the I-beams extend along the arrangement direction of the steel pipe piles, the two I-beams are arranged at intervals up and down, the inner end plate of the I-beam abuts against the side wall of the steel pipe pile, the gusset plate is arranged on the outer side of the I-beam, and the gusset plate is fixed to the outer end plates of the two I-beams at the same time;

[0008] The supporting plates are provided with holes, and the supporting plates of the two single-sided steel crown beams correspond to each other one by one. The screw rod is inserted into the holes of the two corresponding supporting plates, and nuts are screwed on both ends of the screw rod. The two nuts are clamped on the outer sides of the two corresponding supporting plates.

[0009] Preferably, a gasket is provided between the nut and the fixing plate.

[0010] Preferably, the gasket is a steel gasket.

[0011] Preferably, the screw is a rigid screw.

[0012] Preferably, a set of corresponding tie plates is provided between each two adjacent steel pipe piles.

[0013] Preferably, the gusset plate is welded and fixed to the two outer end plates of the I-beams at the same time. The beneficial effects of the utility model are:

[0014] In the past, the crown beam of steel pipe piles was generally made of reinforced concrete, and the reinforced concrete crown beam had to be constructed in sections after the steel pipe piles were driven in. Compared with the reinforced concrete crown beam, the composite section steel crown beam has the characteristics of convenient construction, no maintenance, and recyclability, which conforms to the development concept of green environmental protection, as described below.

[0015] 1. Factory processing, convenient construction. The reinforced concrete crown beam requires leveling the site, tying steel bars, pouring concrete and other steps, and the process is relatively complicated. However, the composite cross-section steel crown beam provided by the utility model can be prefabricated in the factory and assembled on site, which is convenient for construction.

[0016] 2. No maintenance is required, shortening the construction period. After the reinforced concrete crown beam is poured, it still needs maintenance and other processes, which takes a long time to construct. When the environmental conditions are not good, it will also affect the strength of the reinforced concrete material. However, the composite cross-section steel crown beam provided by the utility model can be put into use after on-site welding and assembly, which can effectively shorten the construction period.

[0017] 3. Recycling and environmental protection. After the foundation pit project is completed, the reinforced concrete crown beam needs to be dismantled, which will generate a large amount of construction waste and pollute the environment. Since concrete materials are non-renewable resources, it will cause a certain amount of resource waste. The combined cross-section steel crown beam provided by the utility model is easy to disassemble and can be recycled and reused, which is in line with the green and low-carbon development concept. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the planar structure of a composite cross-section steel crown beam of a steel pipe pile provided in an embodiment of the utility model;

[0019] Figure 2A schematic diagram of the elevation structure of a composite cross-section steel crown beam of a steel pipe pile provided in an embodiment of the utility model;

[0020] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure at AA in the middle;

[0021] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure at the middle BB;

[0022] Figure 5 A schematic plan view of the structure of a U-shaped seat and related parts of a composite cross-section steel crown beam of a steel pipe pile provided in an embodiment of the utility model.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. I-beam; 2. Tie plate; 3. Screw; 4. Gasket; 5. Nut; 6. Steel pipe pile; 7. U-shaped seat. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with specific embodiments so that those skilled in the art can understand the present invention more clearly.

[0026] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrally formed structure. For ordinary technicians in this field, the specific meanings of such terms in this patent can be understood according to specific circumstances.

[0027] Example 1

[0028] This embodiment provides a composite cross-section steel crown beam of a steel pipe pile, including a screw rod 3 and two single-sided steel crown beams, wherein the two single-sided steel crown beams are respectively arranged at the front and rear sides of the steel pipe pile 6;

[0029] The one-side steel crown beam includes three gussets 2 and two I-beams 1. The I-beams 1 extend along the arrangement direction of the steel pipe piles 6. The two I-beams 1 are arranged at intervals in the upper and lower directions. Figure 1-2As shown, the four steel pipe piles 6 are arranged along a straight line, and the I-beam 1 is arranged along the straight line. Since the I-beam 1 usually includes two end plates and a connecting plate in the middle, the connecting plate is placed horizontally so that the two end plates are in a vertical state. At this time, one of the end plates can be simultaneously abutted against the side walls of the four steel pipe piles 6. That is, the inner end plate of the I-beam 1 abuts against the side wall of the steel pipe pile 6, and the gusset plate 2 is arranged on the outside of the I-beam 1, that is, the gusset plate 2 is located on the side of the I-beam 1 facing away from the steel pipe pile 6, and the gusset plate 2 is simultaneously welded and fixed to the two outer end plates of the I-beam 1 to form a double-limb section.

[0030] The gusset plate 2 is provided with holes, and the gusset plates 2 of the two unilateral steel crown beams correspond to each other. Specifically, Figure 1-2 As shown, the front and rear sides of the steel pipe pile 6 are each provided with three said gussets 2, and the three said gussets 2 on the front side correspond to the three said gussets 2 on the rear side. The said screw rod 3 is inserted into the holes of the corresponding two said gussets 2 so that the said screw rod 3 is perpendicular to the said gussets 2, and the said screw rod 3 is a steel screw rod. Both ends of the said screw rod 3 are screwed with nuts 5, as shown in FIG. Figure 3-4 As shown, the two nuts 5 are clamped on the outside of the corresponding two gusset plates 2. By tightening the nuts 5, the corresponding two gusset plates 2 can be clamped, and then the two single-sided steel crown beams can be clamped. The four steel pipe piles 6 can be formed into a whole, which not only ensures the overall stability of the steel pipe support piles, meets the support setting requirements, and is convenient for construction. Compared with reinforced concrete structures, the steel composite crown beam does not require maintenance, and at the same time gives full play to the characteristics of steel being recyclable and reusable, which is green and environmentally friendly.

[0031] It should be noted that, in the present embodiment, the steel pipe pile 6 will not fall to the sides. This is because during construction, usually only the soil in front of the steel pipe pile 6 is excavated, while other positions remain unchanged. Therefore, the two single-sided steel crown beams are respectively arranged on the front and rear sides of the steel pipe pile 6, and then tightened and fixed by the screw rod 3, which can play a good limiting role on the front and rear sides of the steel pipe pile 6.

[0032] When the steel pipe piles 6 are not arranged in a straight line, they can be assembled in sections as needed. For example, when four steel pipe piles 6 are arranged along a fold line, they can be assembled in two sections at the inflection point of the fold line.

[0033] In this embodiment, a gasket 4 is provided between the nut 5 and the gusset plate 2. The gasket 4 is a steel gasket. The gasket 4 can increase the contact area between the nut 5 and the gusset plate 2, further improving stability.

[0034] In this embodiment, a set of corresponding tie plates 2 is provided between each two adjacent steel pipe piles 6. In this way, the tensioning force of the screw rod 3 is more uniform.

[0035] In summary, the construction method of the composite cross-section steel crown beam provided in this embodiment is described in steps as follows:

[0036] After the construction of S1 and steel pipe pile 6 is completed, the site in front of and behind the pile shall be leveled with a width of not less than 1m;

[0037] S2. A composite cross-section steel crown beam is set before and after the pile. The single-side steel crown beam is welded by an I-beam 1 and a tie plate 2 to form a double-leg lattice cross-section. The welds are circumferential welds and can be processed in the factory or on-site.

[0038] S3, the gusset plate 2 is set between the steel pipe piles 6, the center of the gusset plate 2 is opened according to the size of the screw 3, the screw 3 passes through the hole, connects the steel crown beams in front of the pile and behind the pile, and the nuts 5 are tightened on the ends. A steel gasket 4 is set between the nut 5 and the gusset plate 2.

[0039] Example 2

[0040] On the basis of Example 1, a U-shaped seat 7 is installed on the inner end plate of the I-beam 1 by bolts, the groove of the U-shaped seat 7 faces the steel pipe pile 6, the U-shaped seat 7 is adapted to the steel pipe pile 6, and the steel pipe pile 6 is embedded in the groove of the U-shaped seat 7. In other words, the I-beam 1 is in contact with the steel pipe pile 6 through the U-shaped seat 7, so that the U-shaped seat 7 can increase the contact area between the steel pipe pile 6 and the I-beam 1, thereby improving the connection stability, and avoiding stress concentration. The U-shaped seat 7 can also limit the steel pipe pile 6, making it more convenient and stable during assembly, and the I-beam 1 will not deviate.

[0041] It is worth noting that the U-shaped seat 7 is fixed to the I-beam 1 by bolts, and the bolts should not interfere with the steel pipe pile 6.

[0042] The U-shaped seat 7 can also be a steel structure, which is convenient for factory prefabrication. Different types of U-shaped seats 7 can be prefabricated for different sizes of the steel pipe piles 6. Therefore, the U-shaped seat 7 is also recyclable and reusable, and is green and environmentally friendly.

[0043] The mechanisms, components and parts not specifically described in the present invention are all existing structures in the prior art and can be directly purchased from the market.

[0044] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present utility model. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0045] The above is only a preferred embodiment of the utility model, and is not intended to limit the protection scope of the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A composite cross-section steel crown beam of a steel pipe pile, characterized in that: It comprises a screw rod (3) and at least two single-sided steel crown beams, wherein the two single-sided steel crown beams are respectively arranged on the front and rear sides of the steel pipe pile (6); The single-sided steel crown beam comprises a gusset plate (2) and at least two I-beams (1), wherein the I-beams (1) extend along the arrangement direction of the steel pipe piles (6), the two I-beams (1) are arranged at intervals up and down, the inner end plate of the I-beam (1) abuts against the side wall of the steel pipe pile (6), the gusset plate (2) is arranged on the outer side of the I-beam (1), and the gusset plate (2) is fixed to the outer end plates of the two I-beams (1) at the same time; The gusset plates (2) are provided with holes, and the gusset plates (2) of the two single-sided steel crown beams correspond to each other one by one. The screw rod (3) is inserted into the holes of the two corresponding gusset plates (2), and nuts (5) are screwed on both ends of the screw rod (3). The two nuts (5) are clamped on the outside of the two corresponding gusset plates (2).

2. The composite cross-section steel crown beam of a steel pipe pile according to claim 1, characterized in that: A gasket (4) is provided between the nut (5) and the fixing plate (2).

3. The composite cross-section steel crown beam of a steel pipe pile according to claim 2, characterized in that: The gasket (4) is a steel gasket.

4. The composite cross-section steel crown beam of a steel pipe pile according to claim 1, characterized in that: The screw (3) is a rigid screw.

5. The composite cross-section steel crown beam of a steel pipe pile according to claim 1, characterized in that: A set of corresponding tie plates (2) is provided between each two adjacent steel pipe piles (6).

6. The composite cross-section steel crown beam of a steel pipe pile according to claim 1, characterized in that: The tie plate (2) is simultaneously welded and fixed to the outer end plates of the two I-beams (1).

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