Positioning and guiding device and lowering system for SMW construction method pile profile steel

Abstract

The utility model discloses an SMW construction method pile profile steel positioning and guiding device and a lowering system, the positioning and guiding device comprises a cuboid frame body, the middle of the cuboid frame body is provided with a profile steel guiding hole with the same shape as an SMW construction method pile, two ends of the cuboid frame body are provided with hoisting holes, and two sides of the profile steel guiding hole are provided with treads; the positioning guide device is arranged above a profile steel arrangement point, a profile steel guide hole is aligned with the arrangement point, and the center line is perpendicular to the working face. The device is simple in structure, high in rigidity, good in stability, capable of supporting the profile steel, convenient to correct, capable of preventing the profile steel from inclining greatly and capable of ensuring construction quality. The construction device can be expanded to similar projects, can be adopted in the construction process, and is very wide in application prospect. The construction technical problem in the prior art can be solved, the construction efficiency can be improved, and the cost is saved.

Description

Technical Field

[0001] The utility model belongs to the field of foundation pit retaining engineering devices, and specifically relates to a pile steel positioning and guiding device and a lowering system used for SMW construction method. Background Art

[0002] During the foundation pit support construction under the complex geological conditions of the coast, the three-axis cement-soil mixing piles are inserted into the steel as the main support form. The steel insertion should be carried out within 30 minutes after the construction of the mixing piles is completed. Before insertion, the straightness and joint welding quality must be checked to ensure that the verticality requirements are met. The allowable deviation of the steel insertion should meet the following requirements: First, the allowable deviation of the steel verticality is 1 / 200, and second, the allowable deviation of the steel plane position parallel to the foundation pit edge is 50mm, and the allowable deviation is 10mm perpendicular to the foundation pit edge. The steel insertion should rely on its own weight. If the steel has no positioning guide device, or the positioning guide device has a small rigidity, it is easy for the steel to fail to be inserted quickly and accurately during the lowering process. Therefore, if an effective positioning guide device cannot be adopted, the quality of the inserted steel is difficult to guarantee. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a positioning and guiding device and a lowering system for SMW construction method pile steel, which solves the problem that the positioning and guiding of the SMW construction method pile steel lowering process is difficult to control in the prior art.

[0004] The utility model adopts the following technical solutions to solve the above technical problems:

[0005] A steel positioning and guiding device for SMW construction method piles comprises a rectangular parallelepiped frame body, a steel guide hole with the same appearance as the SMW construction method pile is arranged in the middle of the rectangular parallelepiped frame body, lifting holes are arranged at both ends, and treads are arranged on both sides of the steel guide hole; the positioning and guiding device is arranged above the steel layout point, and the steel guide hole is aligned with the layout point, and the center line is perpendicular to the working surface.

[0006] The rectangular frame body includes a crossbeam and a longitudinal beam. A plurality of crossbeams are distributed between two parallel longitudinal beams. A steel guide hole is formed between the two middle crossbeams and the two longitudinal beams. A plurality of threaded steel bars parallel to the crossbeams are arranged between the crossbeams on both sides of the steel guide hole to form a tread.

[0007] The cross beams and longitudinal beams, and the threaded steel bars and longitudinal beams are all connected by welding.

[0008] The cross beam and the longitudinal beam are both made of 32# channel steel, and the diameter of the threaded steel bar is 9-11mm.

[0009] The spacing between the threaded steel bars is adjustable.

[0010] The hoisting holes are arranged on the flanges of the longitudinal beams, and one hoisting hole is arranged at each end of each longitudinal beam.

[0011] The specifications and quantity of the steel guide holes are determined according to the specifications and skills of the steel layout.

[0012] The tread is a steel plate welded on the rectangular parallelepiped frame body.

[0013] The SMW method pile steel lowering system includes the positioning guide device, a lifting machinery, and a steel wire rope; wherein one end of the steel wire rope passes through the lifting hook of the lifting machinery, and the other end is respectively connected to the lifting holes of the positioning guide device. The lifting machinery lifts the positioning guide device to the steel layout point, aligns the center point of the steel with the center of the guide hole of the steel positioning guide device, and lowers the SMW method pile steel.

[0014] The specific structure of the positioning and guiding device is determined according to the layout specifications and quantity of the SMW construction method pile steel units.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. This device has a simple structure, high rigidity and good stability. It can support the steel section, facilitate correction, prevent it from tilting too much, and ensure construction quality.

[0017] 2. The tread formed by threaded steel bars makes it convenient for operators to stand on it and guide the lowering of the steel sections in time.

[0018] 3. This device can be extended to similar projects and can be used in the construction process. It has a broad application prospect. It can not only solve the construction technical problems in the existing technology, but also improve the construction efficiency and save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the positioning and guiding device of the utility model.

[0020] Figure 2 This is a top view of the positioning and guiding device of the utility model.

[0021] Among them, the markings in the figure are: 1-cross beam; 2-longitudinal beam; 3-threaded steel bar; 4-lifting hole; 5-steel guide hole. DETAILED DESCRIPTION

[0022] The structure and working process of the utility model will be further described below in conjunction with the accompanying drawings.

[0023] The construction device of this scheme is mainly used to solve the problem that the positioning and guidance of the SMW construction method pile steel is difficult to control during the lowering process. In particular, many foundation pit support forms under complex geological conditions adopt the form of SMW construction method pile + front support grouting steel pipe, which requires that the front support grouting steel pipe position must be positioned and reserved before the formal construction, and then the steel is accurately inserted to ensure that the front support grouting steel pipe will not cross the steel position during the subsequent construction process. Therefore, the development of a positioning and guiding device for SMW construction method pile steel is the key to solving the above construction technology problems.

[0024] A steel positioning and guiding device for SMW construction method piles comprises a rectangular parallelepiped frame body, a steel guide hole with the same appearance as the SMW construction method pile is arranged in the middle of the rectangular parallelepiped frame body, lifting holes are arranged at both ends, and treads are arranged on both sides of the steel guide hole; the positioning and guiding device is arranged above the steel layout point, and the steel guide hole is aligned with the layout point, and the center line is perpendicular to the working surface.

[0025] Specific embodiments, such as Figure 1 , Figure 2 As shown,

[0026] A steel positioning and guiding device for SMW construction method piles comprises a rectangular parallelepiped frame body, wherein the rectangular parallelepiped frame body comprises a crossbeam 1 and a longitudinal beam 2, a plurality of crossbeams 1 are distributed between two parallel longitudinal beams 2, a steel guide hole 5 is formed between two middle crossbeams 1 and two longitudinal beams 2, and the steel guide hole 5 has the same appearance as the SMW construction method pile; a plurality of threaded steel bars 3 parallel to the crossbeams 1 are arranged between the crossbeams 1 on both sides of the steel guide hole 5 to form a tread.

[0027] The cross beam 1 and the longitudinal beam 2 are both made of 32# channel steel, and the diameter of the threaded steel bar 3 is 9-11 mm. The cross beam 1 and the longitudinal beam 2, and the threaded steel bar 3 and the longitudinal beam 2 are both welded and can be reused.

[0028] The spacing between the threaded steel bars 3 is adjustable.

[0029] The hoisting holes 4 are arranged on the flanges of the longitudinal beams 2 , and one hoisting hole 4 is arranged at each end of each longitudinal beam 2 .

[0030] The specifications and quantity of the steel guide holes 5 are determined according to the specifications and skills of the steel layout.

[0031] The tread can also be a steel plate welded to the rectangular parallelepiped frame body.

[0032] The SMW method pile steel lowering system includes the positioning guide device, a lifting machinery, and a steel wire rope; wherein one end of the steel wire rope passes through the lifting hook of the lifting machinery, and the other end is respectively connected to the lifting holes of the positioning guide device. The lifting machinery lifts the positioning guide device to the steel layout point, aligns the center point of the steel with the center of the guide hole of the steel positioning guide device, and lowers the SMW method pile steel.

[0033] The specific working principle and application process of the decentralization system are as follows:

[0034] Step 1: Before lowering the SMW pile steel, first connect the lifting wire rope to the four lifting holes on the positioning guide device;

[0035] The second step is to lift the device with a lifting machine, transfer it to the steel layout point, and align the center point of the steel with the center of the guide hole of the steel positioning guide device;

[0036] The third step is to use the tread formed by the threaded steel bars to facilitate operators to stand on it and guide the steel sections to be lowered smoothly in time.

[0037] The device has a simple structure, high rigidity, good stability, and can support the steel section, making it easy to correct and prevent it from tilting too much, thus ensuring the quality of construction. In addition, it is easy to use and can be quickly moved to other working areas.

[0038] Compared with the prior art, the outstanding features of the device are: the device has a simple structure, high rigidity, good stability, can support the steel section, is easy to correct, prevents it from tilting too much, and ensures the construction quality.

[0039] In addition, it is easy to use and can be quickly moved to other work areas.

[0040] The device can effectively solve the problem of difficult-to-control positioning and guiding during the lowering process of the SMW pile steel, thereby improving construction efficiency, saving costs and ensuring construction quality.

[0041] As a preferred embodiment, a further technical solution of the device is: the guide hole of the steel section can be adjusted according to the size of the steel section, which is suitable for lowering various types of steel sections.

[0042] The specific structure of the positioning and guiding device is determined according to the layout specifications and quantity of the SMW construction method pile steel units.

[0043] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or apparatuses.

[0044] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0045] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0046] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

Claims

1. A positioning and guiding device for pile steel in SMW construction method, characterized in that: It comprises a rectangular frame body, wherein a steel guide hole having the same shape as that of an SMW construction method pile is arranged in the middle of the rectangular frame body, lifting holes are arranged at both ends, and treads are arranged on both sides of the steel guide hole; a positioning guide device is arranged above a steel layout point, and the steel guide hole is aligned with the layout point, and the center line is perpendicular to the working surface.

2. The positioning and guiding device for pile steel in SMW construction method according to claim 1, characterized in that: The rectangular frame body includes a crossbeam and a longitudinal beam. A plurality of crossbeams are distributed between two parallel longitudinal beams. A steel guide hole is formed between the two middle crossbeams and the two longitudinal beams. A plurality of threaded steel bars parallel to the crossbeams are arranged between the crossbeams on both sides of the steel guide hole to form a tread.

3. The positioning and guiding device for pile steel in SMW construction method according to claim 2, characterized in that: The cross beams and longitudinal beams, and the threaded steel bars and longitudinal beams are all connected by welding.

4. The positioning and guiding device for pile steel in SMW construction method according to claim 2, characterized in that: The cross beam and the longitudinal beam are both made of 32# channel steel, and the diameter of the threaded steel bar is 9-11mm.

5. The positioning and guiding device for pile steel in SMW construction method according to claim 4, characterized in that: The spacing between the threaded steel bars is adjustable.

6. The positioning and guiding device for pile steel in SMW construction method according to claim 2, characterized in that: The hoisting holes are arranged on the flanges of the longitudinal beams, and one hoisting hole is arranged at each end of each longitudinal beam.

7. The positioning and guiding device for pile steel in SMW construction method according to claim 1, characterized in that: The specifications and quantity of the steel guide holes are determined according to the specifications and skills of the steel layout.

8. The SMW pile steel positioning and guiding device according to claim 1 is characterized in that: The tread is a steel plate welded on the rectangular parallelepiped frame body. 9.SMW method pile steel lowering system, characterized by: It includes the positioning and guiding device, lifting machinery and wire rope as described in any one of claims 1 to 8; wherein, one end of the wire rope passes through the lifting machinery hook, and the other end is respectively connected to the lifting holes of the positioning and guiding device. The lifting machinery lifts the positioning and guiding device to the steel section layout point, aligns the center point of the steel section with the center of the guide hole of the steel section positioning and guiding device, and lowers the SMW pile steel.

10. The SMW method pile steel lowering system according to claim 9, characterized in that: The specific structure of the positioning and guiding device is determined according to the layout specifications and quantity of the SMW construction method pile steel units.

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