Efficient and convenient clamping groove type steel pipe pile bottom lifting device

Abstract

An efficient and convenient clamping groove type steel pipe pile bottom hoisting device comprises a front plate, a rear plate, an outer side plate, an inner side plate, an upper plate, a lower plate and a pull rod, the length of the lower plate is smaller than that of the upper plate, the front plate, the rear plate, the outer side plate, the inner side plate, the upper plate and the lower plate form an unclosed cuboid structure, and a bottom bolt hole is formed in the end, close to the outer side plate, of the lower plate in a penetrating mode; bottom hanging screw nuts are welded to the bottom bolt holes in the top face of the lower plate, clamping grooves are correspondingly formed in the portions, between the unsealed section of the lower plate and the inner side plate, of the front plate and the rear plate, a side face bolt hole is reserved in the middle of the inner side plate, pull rod nuts are welded to the inner side face of the inner side plate at the side face bolt holes, and the two ends of the pull rod are connected with the pull rod nuts respectively. The bottom hanging device can be installed on the land, the construction speed is high, the bottom hanging screw can be repeatedly used, material input is reduced, installation and detachment are convenient, manpower and hoisting machinery are saved, and the defects existing in the traditional cast-in-place cross beam and pile cap construction technology are overcome.

Description

Technical Field

[0001] The utility model relates to the field of steel pipe piles, in particular to an efficient and convenient slot-type steel pipe pile bottom hanging device. Background Art

[0002] In order to accommodate various types of ships and improve the economic benefits of the wharf, some wharf structures in ports with large tidal ranges use high-pile beams and slab structures. The pile foundations of the wharf front pile platform are mostly steel pipe piles, and the upper structure is cast-in-place beams, pile caps and other structures. Because the pile top elevation is low, it is greatly affected by the tide and the operation time is short; therefore, the construction of cast-in-place beams and pile caps of high-pile wharfs determines the construction progress of the entire wharf; at present, there are generally three types of cast-in-place beams and pile caps for high-pile wharfs:

[0003] 1. "Baoluoluodi" technology, the halo is made of round steel, and then the halo is used to hang the halo channel steel as the bottom platform of the pile cap; during construction, the halo is first processed with round steel, and the steel bars are cut according to the diameter of the steel pipe pile and the length from the pile top to the bottom of the halo beam. After cutting, threads are processed at both ends of the round steel, and then they are bent into haloes according to the layout size. The halo is installed on the top of the pile, and then the halo steel beam, secondary beam, and panel are installed in sequence to form a cast-in-place beam and pile cap bottom formwork.

[0004] Due to the loop hanging bottom technology, when pouring concrete, the loop bend is easy to deform after being stressed, which can easily cause the beam and pile cap to deflect; when cutting off the loop, it is easy to burn the concrete surface, and it is difficult to completely eradicate the loop. During use, the loop position is prone to rust, and as time goes by, the structural steel bars may be corroded, leaving quality risks.

[0005] 2. The "steel clamp pile" process is to install steel hoops on piles, use steel hoops as supports for crossbeams and pile cap bottom formwork, install steel beams on the supports as platforms for laying the pile cap bottom; during construction preparation, steel hoops are processed and manufactured according to the pile diameter and pile cap size. During the construction of crossbeams and pile caps, steel hoops are first installed on steel pipe piles, and then steel beams are installed on steel hoops. Secondary beams and panels are laid on the channel steels in sequence to form crossbeams and pile cap bottom formwork.

[0006] Due to the steel clamp process, it is greatly affected by tides during installation and removal, and the construction is slow. The steel clamp is also easy to damage the anti-corrosion coating on the surface of the steel pipe pile, causing the steel pipe pile to rust, and there is a greater risk during removal.

[0007] 3. The "shoulder pole beam" process is to use channel steel to make steel piers on the top of steel pipe piles, and install shoulder pole beams on the steel piers using the method of inverted steel beams as bottom formwork platform; during construction, first erect channel steel on the pile head as steel piers, then install steel shoulder pole beams on the steel piers, and finally assemble the steel side formwork and the bottom steel beam on land and then use a lifting machinery to lift it to the pile head, and hang it in connection with the steel shoulder pole beam, and then lay secondary beams and panels on the steel ribs in sequence to form cast-in-place beams and pile cap bottom formwork.

[0008] In the shoulder-pole beam process, the crossbeam and pile cap reinforcement must be disconnected at the beam erection point during construction, which affects the overall construction quality; and the supporting pier steel is buried in the concrete during concrete pouring, resulting in material waste, large investment in labor and lifting machinery, slow construction progress, and high investment costs. Summary of the invention

[0009] The utility model aims to solve the technical problem of the bottom hanging system during the construction of low-water-level cast-in-place beams and pile caps, and provides an efficient and convenient slot-type steel pipe pile bottom hanging device.

[0010] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0011] An efficient and convenient slot-type steel pipe pile bottom hanging device comprises a front plate, a rear plate, an outer plate, an inner plate, an upper plate, a lower plate and a pull rod, the length of the lower plate is less than that of the upper plate, the front plate, the rear plate, the outer plate, the inner plate, the upper plate and the lower plate form an unclosed rectangular structure, a bottom bolt hole is penetrated by one end of the lower plate close to the outer plate, a bottom hanging screw nut is welded at the bottom bolt hole on the top surface of the lower plate, slots are correspondingly opened on the front plate and the rear plate between the unsealed section of the lower plate and the inner plate, a side bolt hole is reserved in the middle position of the inner plate, a pull rod nut is welded at the side bolt hole on the inner side surface of the inner plate, positive and negative threads are processed on both ends of the pull rod, and the two ends of the pull rod are respectively connected to the pull rod nut on the inner plate of the rectangular structure.

[0012] The front plate, the rear plate, the outer plate, the inner plate, the upper plate and the lower plate are connected by welding.

[0013] The front plate, rear plate, outer plate, inner plate, upper plate and lower plate are made of steel plates, and the steel plates are QB steel plates with a thickness of mm.

[0014] The width of the clamping groove is greater than the thickness of the top wall of the steel pipe pile.

[0015] The pull rod is round steel.

[0016] The beneficial effects of the utility model are as follows: the bottom hanging device of the utility model can be installed on land, the construction speed is fast, the bottom hanging screw can be reused, the material input is reduced, the installation and removal are convenient, and labor and lifting machinery are saved. The device is designed to be simple and convenient to operate, and the safety hazards in the construction process are reduced. It solves the drawbacks of traditional cast-in-place beams and pile cap construction processes, and can be used in the cast-in-place beams and pile cap bottom hanging of steel pipe piles at high-pile docks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is an application schematic diagram of the utility model;

[0019] In the figure: 1- bottom screw; 2- nut; 3- gasket; 4- main beam; 5- secondary beam; 6- bottom formwork panel; 7- outer plate; 8- upper plate; 9- front plate; 10- inner plate; 11- tie rod; 12- tie rod nut; 13- bottom screw nut; 14- lower plate; 15- bottom bolt hole; 16- slot; 17- side bolt hole; 18- steel pipe pile.

[0020] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0022] like Figure 1-Figure 2 As shown, an efficient and convenient slot-type steel pipe pile bottom hanging device comprises a front plate 9, a rear plate, an outer plate 7, an inner plate 10, an upper plate 8, a lower plate 14 and a pull rod 11. The length of the lower plate 14 is less than that of the upper plate 8. The front plate 9, the rear plate, the outer plate 7, the inner plate 10, the upper plate 8 and the lower plate 14 form an unclosed rectangular structure. A bottom bolt hole 15 is penetrated at one end of the lower plate 14 close to the outer plate 7. A bottom hanging screw nut 13 is welded at the bottom bolt hole 15 on the top surface of the lower plate 14. Slots 16 are correspondingly opened on the front plate 9 and the rear plate between the unsealed section of the lower plate 14 and the inner plate 10. A side bolt hole 17 is reserved in the middle position of the inner plate 10. A pull rod nut 12 is welded at the side bolt hole 17 on the inner side surface of the inner plate 10. Both ends of the pull rod 11 are processed with positive and negative threads, and the two ends of the pull rod 11 are respectively connected to the pull rod nut 12 on the inner plate 10 of the rectangular structure.

[0023] The front plate 9, the rear plate, the outer plate 7, the inner plate 10, the upper plate 8 and the lower plate 14 are connected by welding.

[0024] The front plate 9, the rear plate, the outer plate 7, the inner plate 10, the upper plate 8 and the lower plate 14 are made of steel plates, and the steel plates are 20 mm thick Q355B steel plates.

[0025] The width of the clamping groove 16 is greater than the thickness of the top wall of the steel pipe pile.

[0026] The pull rod 11 is round steel.

[0027] Working principle: After the device is manufactured and processed, it is symmetrically installed on the top wall of the steel pipe pile 18 through the upper slot 16 of the device, and the bottom screw nut 13 reserved in advance is connected to the main beam 4 of the bottom suspension system through the precision-rolled thread on the top of the lower plate 14. As a bottom mold construction platform, in order to prevent the outer side of the device from bending downward during use, a pull rod 11 is used to connect the two devices to offset the downward bending of the device during the force-bearing process. The vertical downward force generated by the bottom mold system and concrete pouring is transmitted to the pipe pile through the device.

[0028] When working, 1) install the bottom hanging system

[0029] The installation sequence of the suspended bottom system is as follows: installation of the device pull rod → installation of the device on the top of the pile → suspended bottom screw → main beam → secondary beam → bottom formwork panel.

[0030] ① Tie rod installation: According to the top cross section and pile diameter of the steel pipe pile 18, the two devices are connected by the tie rod 11.

[0031] ② The device is installed on the top of the pile: install the connected device on the top of the steel pipe pile 18.

[0032] ③ Bottom screw: The bottom screw 1 is made of PSB fine-rolled threaded steel. When the bottom screw 1 is installed, a corrugated pipe is put on it to ensure sealing. After pouring concrete, the bottom screw 1 can be removed to ensure the quality of the concrete entity.

[0033] ④ Main beam: The main beam 4 is made of double steel beams with a spacing of 3cm between the two steel beams. The bottom screw 1 passes through the two steel beams. The bottom of the bottom screw 1 is equipped with a 300×300×20mm gasket 3+double nut 2 to fix it to the shoulder beam crossbeam and the main beam 4.

[0034] ⑤ Secondary beam: The secondary beam 5 is made of small I-beams or wooden beams, arranged at a certain interval, and fixed to the main beam 4.

[0035] ⑥ Bottom form panel: The bottom form panel 6 is made of bamboo plywood, which is fixed to the secondary beam 5.

[0036] 2) Stress process

[0037] The load transfer path is: reinforced concrete load and construction load → bottom form panel → bottom form secondary beam → bottom form main beam → bottom hanging screw → bottom hanging device → steel pipe pile.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships 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, and do not indicate or imply that the referred device or element 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.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In the present invention, 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 one; it can be a mechanical connection, an electrical connection, or communication with each other; 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or it is directly applied to other occasions without improvement, it is within the protection scope of the utility model.

Claims

1. An efficient and convenient slot-type steel pipe pile bottom hanging device, characterized in that: The utility model comprises a front plate (9), a rear plate, an outer plate (7), an inner plate (10), an upper plate (8), a lower plate (14) and a pull rod (11), wherein the length of the lower plate (14) is less than the length of the upper plate (8), and the front plate (9), the rear plate, the outer plate (7), the inner plate (10), the upper plate (8) and the lower plate (14) form an unclosed rectangular parallelepiped structure, and a bottom bolt hole (15) is penetrated at one end of the lower plate (14) close to the outer plate (7), and the top surface of the lower plate (14) is at the bottom bolt hole (15). A bottom screw nut (13) is welded, and corresponding slots (16) are opened on the front plate (9) and the rear plate between the unsealed section of the lower plate (14) and the inner plate (10), and a side bolt hole (17) is reserved in the middle of the inner plate (10). A tie rod nut (12) is welded on the inner side surface of the inner plate (10) at the side bolt hole (17), and positive and negative threads are processed at both ends of the tie rod (11), and the two ends of the tie rod (11) are respectively connected to the tie rod nut (12) on the inner plate (10) of the rectangular structure.

2. According to claim 1, an efficient and convenient slot-type steel pipe pile bottom hanging device is characterized in that: The front plate (9), the rear plate, the outer plate (7), the inner plate (10), the upper plate (8) and the lower plate (14) are connected by welding.

3. The efficient and convenient slot-type steel pipe pile bottom hanging device according to claim 2 is characterized in that: The front plate (9), the rear plate, the outer plate (7), the inner plate (10), the upper plate (8) and the lower plate (14) are made of steel plates, which are 20 mm thick Q355B steel plates.

4. The efficient and convenient slot-type steel pipe pile bottom hanging device according to claim 3 is characterized in that: The width of the clamping groove (16) is greater than the thickness of the top wall of the steel pipe pile.

5. The efficient and convenient slot-type steel pipe pile bottom hanging device according to claim 4 is characterized in that: The pull rod (11) is round steel.

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