CN116289938A - Vertical centering device for tubular pile joint and tubular pile construction method - Google Patents

Abstract

The invention relates to the technical field of construction and traffic engineering, and particularly discloses a vertical centering device for a tubular pile joint and a tubular pile construction method, wherein the device comprises a platform plate, a leveling mechanism and a centering mechanism which are arranged on the platform plate, and a positioning notch for connecting the tubular pile is formed in one side of the platform plate; at least two leveling mechanisms are arranged on the periphery of the alignment notch in a dispersing way so as to support the platform plate to keep a horizontal state; the centering mechanism comprises a first traction assembly, a first anchor ear, a second traction assembly, a second anchor ear and a movable rotating shaft; the centering mechanism further comprises a steel rope component for furling or releasing the top end of the first hoop and the top end of the second hoop. The invention realizes the purpose of quickly adjusting the perpendicularity of the pipe pile and the concentricity of the upper and lower pipe pile joints, greatly reduces the centering error, can quickly finish pile splicing, has good vertical centering effect, is easy to implement in the whole vertical centering operation process, has low operation difficulty and has very high pile splicing efficiency.

Description

Vertical centering device for tubular pile joint and tubular pile construction method

Technical Field

The invention relates to the technical field of construction and traffic engineering, in particular to a vertical centering device for a tubular pile joint and a tubular pile construction method.

Background

The prestressed concrete pipe pile is widely popularized and applied in China for 40-50 years, and is commonly used in building engineering, municipal engineering, expressways, high-speed railways, ports and wharfs, ocean platform engineering and the like. The prestressed concrete pipe pile mainly comprises three major construction pile sinking methods, namely a hammering method for extruding soil, a static pressure method, a drilling-following pipe method without extruding soil, a middle digging method and the like, wherein the prefabrication length of the pipe pile can reach 50m except ocean platform and port and dock engineering, other land transportation is limited by the minimum curvature radius of a road corner, the length of a single-section pipe pile is generally not more than 20m, and the pile foundation has large burial depth when the soft soil layer thickness is large, and pile extension treatment is needed. The common pile splicing method comprises a welding method and a mechanical joint method, the joint centering is difficult and takes longer time no matter what joint type, the perpendicularity and the bearing performance of the pile are also affected by the error in the joint centering, and a method for controlling the perpendicularity and rapidly centering is found, so that the pile splicing efficiency can be greatly improved, and the perpendicularity deviation and the centering concentricity deviation are reduced.

Regarding the tubular pile joint centering method, in the published literature, the published patents are divided into two types, one type is a mechanical joint, and the other type is a joint centering auxiliary device. Wherein, mechanical type connects, like patent CN216428268U (PHC tubular pile connects dislocation preventing device), and this scheme can restrict the rocking of second tubular pile, but the connecting pin pole is all aligned with the connecting hole when implementing, and 8 group mounting hole and connecting cylinder are all aligned the difficult degree great, waste time and energy. In the CN101519877a (multi-head fast strong-pull butt-joint fastener and prefabricated member), the plug is paired with the top-pull nut, the number of the plug is equal to the number of prestressed reinforcements in the pipe pile, and the plug and the top-pull nut can be inserted only after being aligned completely, which is very difficult and time-consuming and labor-consuming. Patent CN 218148311U (PHC pile with joint positioning and assembling functions), although convenient for insertion during pile splicing, the additional joint adds extra cost, and the pulling resistance is weak, which is unfavorable for engineering use. Patent CN 212405125U (a positioning structure for prestressed pipe pile bodies), in which the number of positioning pipes and positioning sleeves is large, it is very difficult to insert after all alignment, which affects pile splicing efficiency, and the built-in positioning pipes and positioning sleeves add extra construction cost. Patent CN 216809866U (a bolt type quick mechanical joint for connecting the prestressed pipe piles in detail) is also connected with the lower pipe piles through inserting rods and inserting grooves, the number is large, the alignment difficulty is high, and the joint is internally and externally provided with auxiliary structures, so that the additional manufacturing cost is increased. Patent CN115075235a (a prestressed concrete tubular pile-splicing structure and construction method thereof) is provided with a guide post in the lower pile joint, pile-splicing is convenient, but the internally provided guide post limits the use of the middle digging method and the following tubular pile method while drilling, and adds additional cost, and the joint has weak resistance to pulling.

Another type of centering auxiliary device, such as CN 217352469U (a tool for guaranteeing perpendicularity of pile extension), is to place the tool at the joint of the upper and lower section piles when butt-jointing the piles, but this solution is problematic in that the inner diameters of the annular plates of the upper and lower section piles are equal to the outer diameter of the piles, it is quite difficult to place the lifted upper section pile into the annular plates, and the perpendicularity of the piles cannot be guaranteed by the annular plates. Patent CN 213625563U (a device for preventing dislocation of PHC pile joint), can fix a position the connecting seat through the locating lever, but this scheme is that the centering deviation of upper and lower section tubular pile is reduced through tightening the nut, and workman's intensity of labour is big. In the patent CN217998051U (a device for preventing dislocation of PHC tubular pile joints), the structure of the hinged support and the clamping piece is complex, the upper section tubular pile and the lower section tubular pile are respectively provided with a group of limiting pieces and adjusting bolts, only the centering in one direction can be controlled, and the deviation in other directions can not be controlled. Patent CN 209555924U (a tubular pile construction centering limiter) can be used for vertical positioning of tubular piles and coaxial positioning of joints, but the mechanism is complex, the upper platform and the lower platform are all required to be leveled, and the consumed time is long.

Therefore, a new solution to the above-mentioned problems is needed for those skilled in the art.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides a vertical centering device for a tubular pile joint and a tubular pile construction method.

The invention comprises a vertical centering device for a tubular pile joint, which comprises a platform plate, a leveling mechanism and a centering mechanism which are arranged on the platform plate, wherein,

an alignment notch for connecting the tubular piles is formed in one side of the platform plate;

at least two leveling mechanisms are arranged on the periphery of the alignment notch in a dispersing way so as to support the platform plate to keep a horizontal state;

the centering mechanism comprises a first traction assembly, a first anchor ear, a second traction assembly, a second anchor ear and a movable rotating shaft; the movable rotating shaft is vertically fixed on the platform plate and is close to the alignment notch; one end of the first hoop and one end of the second hoop are rotatably connected to the movable rotating shaft; the first traction assembly and the second traction assembly are arranged on the platform plate, the movable ends of the first traction assembly and the second traction assembly are respectively hinged with the first anchor ear and the second anchor ear, and the first anchor ear and the second anchor ear are close to or far away from the pipe pile when the first traction assembly and the second traction assembly act;

the centering mechanism further comprises a steel rope component for furling or releasing the top end of the first hoop and the top end of the second hoop.

Further, the first anchor ear and the second anchor ear both comprise at least one arc-shaped support bar, a plurality of parallel first long strips fixed on the arc surface of the arc-shaped support bar, an annular rotating shaft fixedly connected with the top end of the first long strips, and a plurality of second long strips with the bottom end rotationally connected with the annular rotating shaft,

the arc-shaped supporting bars and the annular rotating shaft are horizontally arranged and are in rotary connection with the movable rotating shaft;

the steel rope component is used for folding or releasing the upper end of the second long slat.

Further, the steel rope component comprises steel ropes penetrating through the upper ends of all the second long strips and connected with the second long strips in a sliding way, hooks connected to the middle sections of the steel ropes, and a third traction component connected with the hooks,

the two ends of the steel wire rope are provided with anchoring upsets, and the anchoring upsets are abutted against the second long strip plates when the steel wire rope is tightened;

and when the third traction assembly acts, the steel wire rope is enabled to fold or release the second long slat.

Further, the sum of the lengths of the annular rotating shafts of the first anchor ear and the second anchor ear is matched with the peripheral dimension of the tubular pile; the dimensions of the arc-shaped supporting bar and the annular rotating shaft are consistent.

Further, a plurality of first shaft sleeves which are in one-to-one correspondence with the arc-shaped support bars and the annular rotating shaft are sleeved on the movable rotating shaft, and the arc-shaped support bars and the annular rotating shaft are fixedly connected with the first shaft sleeves; the annular rotating shaft is sleeved with a plurality of second sleeves which are in one-to-one correspondence with the second long strips, and the bottom ends of the second long strips are fixedly connected with the second sleeves.

Further, when the steel rope component is folded to the upper end of the second long slat, the second long slat is in a vertical state; when the steel rope component releases the upper end of the second long slat, the upper end of the second long slat is outwards diffused to be umbrella-shaped.

Further, the first traction component comprises a first traction oil cylinder and a first push-pull rod, the second traction component comprises a second traction oil cylinder and a second push-pull rod, wherein,

one end of the first push-pull rod is hinged with a piston rod of the first traction oil cylinder, the other end of the first push-pull rod is hinged with the first anchor ear, and the first traction oil cylinder pushes or withdraws the first anchor ear through the first push-pull rod to enable the first anchor ear to be close to or far away from the pipe pile;

one end of the second push-pull rod is hinged with a piston rod of the second traction oil cylinder, the other end of the second push-pull rod is hinged with the second anchor ear, and the second traction oil cylinder pushes or withdraws the second anchor ear through the second push-pull rod to enable the second anchor ear to be close to or far away from the pipe pile.

Further, the leveling mechanism comprises a leveling oil cylinder, a grounding supporting plate and a spherical hinge, wherein,

the cylinder body of the leveling cylinder is fixed on the upper surface of the platform plate, and a piston rod of the leveling cylinder downwards penetrates through the platform plate and is connected with the grounding support plate through a spherical hinge;

the ground pallet is located on the ground.

Further, at least one horizontal bubble is arranged on the upper surface of the platform plate.

The invention also comprises a tubular pile construction method adopting the tubular pile joint vertical centering device, and the method comprises the following steps:

s1: leveling the pile site, and adjusting a leveling mechanism to enable the platform plate to be kept in a horizontal state;

s2: when the pile sinking of the lower section pipe pile is stopped until the height from the ground is about 0.5-1.0 m, controlling the first traction assembly and the second traction assembly to enable the first anchor ear and the second anchor ear to be close to the lower section pipe pile, and enabling the first long slat to clamp the lower section pipe pile;

s3: lifting the upper section pipe pile to approach the lower section pipe pile, moving the bottom end of the upper section pipe pile into the first anchor ear and the second anchor ear, gathering the second long slat through the steel rope component, forcing the bottom end of the upper section pipe pile to approach the top end of the lower section pipe pile until the second long slat is parallel to the first long slat;

s4: symmetrically arranging two welding machines on two sides of a tubular pile joint, respectively and synchronously welding, cleaning welding slag after one circle of welding is completed, and fully welding one circle of welding slag;

s5: removing the tubular pile joint vertical centering device, and performing repair welding on the shielding part;

s6: and (5) after the welding line is cooled, continuously drilling the tubular pile, and repeatedly executing the steps S1-S5 until the construction of one tubular pile is completed.

The vertical centering device for the tubular pile joint and the tubular pile construction method have the following beneficial effects:

(1) The leveling mechanism is used for supporting the platform plate to keep a horizontal state, the first anchor ear and the second anchor ear are close to the pipe pile when the first traction component and the second traction component in the centering mechanism act, the top end of the first anchor ear and the top end of the second anchor ear are folded by the steel rope component, the bottom end of the upper pipe pile is forced to be close to the top end of the lower pipe pile, and vertical centering operation of the pipe pile joint is realized; the vertical centering device for the tubular pile joint has simple structure and does not increase extra construction cost; the construction method of the invention realizes the purpose of quickly adjusting the perpendicularity of the pipe pile and the concentricity of the upper and lower pipe pile joints, greatly reduces the centering error, can quickly finish pile splicing, and has good vertical centering effect; the whole vertical centering operation process is easy to implement, has low operation difficulty and very high pile extension efficiency.

(2) When the pipe pile is vertically centered, the first traction assembly and the second traction assembly are controlled to enable the first anchor ear and the second anchor ear to be close to the lower pipe pile, the first long strip clamps the lower pipe pile, the second long strip is folded through the steel rope assembly, the bottom end of the upper pipe pile is forced to be close to the top end of the lower pipe pile until the second long strip is parallel to the first long strip, the first anchor ear and the second anchor ear form a cylinder with the same diameter to hold the pipe pile tightly, forced centering of the joint of the pipe pile in the hoisting process is achieved, and centering concentricity deviation is reduced.

(3) In the process of tubular pile construction, the traction components at different positions are used for carrying out telescopic operation to realize the action of related structures, so that the vertical centering operation of the tubular pile can be realized by only controlling the traction components, excessive human participation is not needed, the labor intensity of personnel is reduced, the operation process is simple and easy to implement, the construction speed is accelerated, and the construction quality is also easier to control.

(4) In the leveling mechanism, leveling of the platform plate is realized through control of the leveling oil cylinder, the lower end of a piston rod of the leveling oil cylinder is connected with a grounding supporting plate through a spherical hinge, and the grounding supporting plate can bear an upper platform and construction load, so that the stability and safety of tubular pile construction are ensured;

(5) According to the pipe pile joint vertical centering device, the leveling mechanism and the centering mechanism are arranged on the same platform plate, so that the deviation of the pipe pile joint verticality and the deviation of the centering concentricity are reduced, the pipe pile joint verticality control precision and the forced centering efficiency can be greatly improved, and the joint centering time is shortened.

Drawings

For a clearer description of embodiments of the invention or of solutions in the prior art, the drawings which are used in the description of the embodiments or of the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.

FIG. 1 is a schematic side view of a vertical centering device for pipe pile joints according to an embodiment of the present invention;

fig. 2 is a schematic side view of a vertical centering device for tubular pile joints according to an embodiment of the present invention;

FIG. 3 is a schematic top view of a vertical centering device for tubular pile joints according to an embodiment of the present invention;

FIG. 4 is a schematic view (first) of a part of a centering mechanism in a vertical centering device for tubular pile joints according to an embodiment of the present invention;

fig. 5 is a schematic view (two) of a part of a centering mechanism in a vertical centering device for tubular pile joints according to an embodiment of the present invention;

fig. 6 is a schematic view (iii) of a part of a centering mechanism in a vertical centering device for tubular pile joints according to an embodiment of the present invention;

fig. 7 is a schematic view (fourth) of a part of a centering mechanism in a vertical centering device for tubular pile joints according to an embodiment of the present invention;

fig. 8 is a schematic view (fifth) of a part of a centering mechanism in a vertical centering device for tubular pile joints according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a first shaft sleeve and a movable shaft in a vertical centering device for a tubular pile joint according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a second shaft sleeve and a wire rope shaft sleeve in the pipe pile joint vertical centering device according to the embodiment of the invention;

fig. 11 is a flowchart illustrating steps of a method for pipe pile construction according to an embodiment of the present invention;

wherein: 1A-lower section pipe pile, 1B-upper section pipe pile, 11-lower section pipe pile upper end plate, 12-upper section pipe pile lower end plate, 2-platform plate, 3-centering mechanism, 31-first traction component, 311-first traction cylinder, 312-first push-pull rod, 32-first anchor ear, 33-second traction component, 331-second traction cylinder, 332-second push-pull rod, 34-second anchor ear, 35-movable rotating shaft, 36-steel rope component, 361-steel rope, 362-hook, 363-third traction component, 364-anchor heading, 365-steel rope shaft sleeve, 371-arc-shaped support bar, 372-first long slat, 373-annular rotating shaft, 374-second long slat, 375-first shaft sleeve, 376-second shaft sleeve, 4-leveling mechanism, 41-leveling cylinder, 42-grounding support plate, 43-spherical hinge and 5-horizontal bubble.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.

The embodiment of the invention relates to a vertical centering device for a tubular pile joint, which is shown in fig. 1 to 10, and comprises a platform plate 2, a leveling mechanism 4 and a centering mechanism 3 which are arranged on the platform plate 2, wherein a positioning notch for connecting tubular piles is formed on one side of the platform plate 2; at least two leveling mechanisms 4 are arranged on the periphery of the alignment notch in a dispersing way so as to support the platform plate 2 to keep a horizontal state; the centering mechanism 3 comprises a first traction component 31, a first hoop 32, a second traction component 33, a second hoop 34 and a movable rotating shaft 35; the movable rotating shaft 35 is vertically fixed on the platform plate 2 and is close to the alignment notch; one end of the first hoop 32 and one end of the second hoop 34 are rotatably connected to the movable rotating shaft 35; the first traction component 31 and the second traction component 33 are arranged on the platform plate 2, the movable ends of the first traction component 31 and the second traction component 33 are respectively hinged with the first anchor ear 32 and the second anchor ear 34, and the first anchor ear 32 and the second anchor ear 34 are close to or far away from the pipe pile when the first traction component 31 and the second traction component 33 act; the centering mechanism 3 further includes a cable assembly 36 that draws in or releases the top end of the first hoop 32 and the top end of the second hoop 34.

In the embodiment of the invention, the movable rotating shaft 35 can be a steel cylindrical pin, the leveling mechanism 4 is used for supporting the platform plate 2 to keep a horizontal state, the first anchor ear 32 and the second anchor ear 34 are close to the pipe pile when the first traction component 31 and the second traction component 33 in the centering mechanism 3 act, and the first anchor ear 32 and the second anchor ear 34 are rotationally connected with the movable rotating shaft 35 in the process, so that the movable rotating shaft 35 rotates, and the first anchor ear 32 and the second anchor ear 34 encircle the pipe pile when the first anchor ear 32 and the second anchor ear are close to the pipe pile; the steel rope assembly 36 draws in the top ends of the first anchor ear 32 and the second anchor ear 34, forces the bottom end of the upper pipe pile 1B to draw in the top end of the lower pipe pile 1A, and achieves vertical centering operation of the pipe pile joint.

Embodiments of the present invention should also include control means for controlling the state of the leveling mechanism 4 and the first 31, second 33 and cable assemblies 36 traction assemblies to achieve vertical centering of the pipe pile joints. The control device may be provided on the platform plate 2 or may be operated by an operator by hand, and the embodiment is not particularly limited.

Compared with the prior art, the tubular pile joint vertical centering device has the advantages that the structure is simplified, the implementation is easy, the operation difficulty is low, the purposes of quickly adjusting the perpendicularity of the tubular pile and the concentricity of the upper and lower pipe pile joints are achieved, the centering error is greatly reduced, pile splicing can be quickly completed, the vertical centering effect is good, and the pile splicing efficiency is very high.

Specifically, as shown in fig. 1 to 6, in the embodiment of the present invention, each of the first anchor ear 32 and the second anchor ear 34 includes at least one arc-shaped support bar 371, a plurality of parallel first long strips 372 fixed on the arc surface of the arc-shaped support bar 371, an annular rotating shaft 373 fixedly connected to the top end of the first long strips 372, and a plurality of second long strips 374 rotatably connected to the annular rotating shaft 373 at the bottom end, wherein the arc-shaped support bar 371 and the annular rotating shaft 373 are both horizontally arranged, and the arc-shaped support bar 371 and the annular rotating shaft 373 are both rotatably connected to the movable rotating shaft 35; the cable assembly 36 draws in or releases the upper end of the second elongate plate 374. As shown in fig. 7, a top view of the connection between the second long strip 374 and the annular rotating shaft 373 and the movable rotating shaft 35 is shown, and as shown in fig. 8, a top view of the connection between the first long strip 372 and the arc-shaped supporting strip 371 and the movable rotating shaft 35 is shown.

In this embodiment, the arc-shaped support bar 371, the first long strip 372 and the annular rotating shaft 373 form an arc-shaped cylindrical hoop structure, which is convenient to attach to the outer surface of the pipe pile and then encircle the pipe pile. The bottom end of the second long slat 374 is rotatably connected with the annular rotating shaft 373, when the steel rope assembly 36 draws in the upper end of the second long slat 374, the upper end of the second long slat 374 is attached to the outer wall of the pipe pile, and at this time, the second long slat 374 is in a vertical state, as shown in fig. 2; when the cable assembly 36 releases the upper end of the second elongate plate 374, the upper end of the second elongate plate 374 spreads outwardly in an umbrella shape with the upper end being remote from the tube stake, as shown in fig. 1 and 5 and 6.

Preferably, the movable rotating shaft 35 is sleeved with a plurality of first shaft sleeves 375 corresponding to the arc-shaped supporting bars 371 and the annular rotating shaft 373 one by one, the arc-shaped supporting bars 371 and the annular rotating shaft 373 are fixedly connected with the first shaft sleeves 375, the positions of which are shown in fig. 1, 2 and 5, and further, the installation details are shown in fig. 9.

Preferably, in order to avoid the second long slat 374 from rotating more smoothly relative to the annular rotating shaft 373, a plurality of second sleeves 376 are sleeved on the annular rotating shaft 373, wherein the second sleeves 376 are in one-to-one correspondence with the second long slat 374, and the bottom ends of the second long slat 374 are fixedly connected with the second sleeves 376. More preferably, the annular rotating shaft 373 is provided with limit grooves matching the positions and the number of the second long strips 374, so that the second long strips 374 are prevented from sliding on the annular rotating shaft 373, and the rotation angle of the second long strips 374 along the annular rotating shaft 373 is limited, so that the steel rope assembly 36 can be at the angle shown in fig. 1 and 5 when the second long strips 374 are released as much as possible.

The number of the arc-shaped support bars 371, the first long strips 372 and the second long strips 374 is not limited, as shown in fig. 1 and 2, two parallel arc-shaped support bars 371 are arranged, so that the arc-shaped cylindrical hoop structure formed by the arc-shaped support bars 371, the first long strips 372 and the annular rotating shaft 373 is more firm and reliable, and more preferably, as shown in fig. 6, the first long strips 372 and the second long strips 374 with the same number are arranged, the connection positions of the first long strips 372 and the second long strips 374 and the annular rotating shaft 373 correspond to each other, and when the upper end of the second long strips 374 is folded by the steel rope assembly 36, the first hoop 32 and the second hoop 34 are combined together to form a cylindrical hoop.

Specifically, in the embodiment of the present invention, the sum of the lengths of the annular rotating shafts 373 of the first anchor ear 32 and the second anchor ear 34 matches the outer peripheral dimension of the tubular pile; the arc-shaped support bar 371 and the annular rotating shaft 373 are identical in size, and when the tubular pile is centered, the first anchor ear 32 and the second anchor ear 34 are tightly attached to the outer surface of the tubular pile.

Specifically, as shown in fig. 1 to 5, in the embodiment of the present invention, the steel rope assembly 36 includes a steel rope 361 penetrating through the upper ends of all the second long strips 374 and slidingly connected to the second long strips 374, a hook 362 connected to a middle section of the steel rope 361, and a third traction assembly 363 connected to the hook 362, wherein, two ends of the steel rope 361 are provided with anchor upsets 364, and when the steel rope 361 is tightened, the anchor upsets 364 are abutted against the second long strips 374; the third pulling assembly 363, when actuated, causes the cable 361 to retract or release the second elongated slat 374. Preferably, in order to achieve a smoother relative sliding movement between the second long strip plate 374 and the wire rope 361, a wire rope bushing 365 is sleeved on the wire rope 361, and the specific shape of the wire rope bushing 365 is shown with reference to fig. 10.

Specifically, as shown in fig. 3, the first traction assembly 31 in the embodiment of the present invention includes a first traction cylinder 311 and a first push-pull rod 312, the second traction assembly 33 includes a second traction cylinder 331 and a second push-pull rod 332, where one end of the first push-pull rod 312 is hinged with a piston rod of the first traction cylinder 311, and the other end is hinged with the first anchor ear 32, and the first traction cylinder 311 pushes or retracts the first anchor ear 32 through the first push-pull rod 312, so that the first anchor ear 32 approaches or gets away from the pipe pile; one end of the second push-pull rod 332 is hinged with a piston rod of the second traction oil cylinder 331, the other end of the second push-pull rod is hinged with the second hoop 34, and the second traction oil cylinder 331 pushes or withdraws the second hoop 34 through the second push-pull rod 332 so that the second hoop 34 is close to or far away from the pipe pile.

In this embodiment, a limiting groove is provided at the installation position of the first traction cylinder 311 and the second traction cylinder 331 to limit the opening and closing angles of the first hoop 32 and the second hoop 34, so as to avoid excessive opening and equipment damage caused by excessive fitting of the pipe piles.

Specifically, as shown in fig. 1 and fig. 2, in the embodiment of the invention, the leveling mechanism 4 includes a leveling cylinder 41, a grounding support plate 42 and a spherical hinge 43, wherein a cylinder body of the leveling cylinder 41 is fixed on the upper surface of the platform plate 2, and a piston rod of the leveling cylinder 41 penetrates through the platform plate 2 downwards and is connected with the grounding support plate 42 through the spherical hinge 43; the ground plate 42 is located on the ground. In this embodiment, the spherical hinge 43 is selected to adapt to the change of the uneven ground, and preferably, the embodiment of the present invention includes 3 leveling mechanisms 4, as shown in fig. 3, 4A, 4B, and 4C respectively.

Specifically, as shown in fig. 1, at least one horizontal bubble 5 is provided on the upper surface of the platform plate 2 in the embodiment of the present invention. As shown in fig. 3, 3 horizontal bubbles 5 are provided corresponding to the number of leveling mechanisms 4, and are distributed in the vicinity of the leveling mechanisms 4, 5A, 5B, and 5C, respectively. When determining whether the leveling mechanism 4 levels the platform plate 2, observing the change of 3 horizontal bubbles 5 to keep all the horizontal bubbles 5 in a horizontal state, and locking the leveling cylinder 41 after the platform plate 2 is leveled so as to perform the pipe pile centering operation.

The invention also provides a tubular pile construction method adopting the tubular pile joint vertical centering device of the embodiment, as shown in fig. 11, comprising the following steps:

s1: leveling the pile site, and adjusting the leveling mechanism to keep the platform plate in a horizontal state.

In combination with the embodiment of the pipe pile joint vertical centering device, in the implementation of the step, all the 3 grounding support plates are grounded, the 3 leveling cylinders are pressurized, the piston rods of the leveling cylinders are extended, the height of the platform plate 2 from the ground is about 0.5-1.0 m, and the foundation under the grounding support plates is compacted.

S2: and stopping pile sinking when the pile sinking of the lower section pipe pile reaches a height of about 0.5-1.0 m from the ground, controlling the first traction assembly and the second traction assembly, enabling the first anchor ear and the second anchor ear to be close to the lower section pipe pile, and enabling the first long strip plate to clamp the lower section pipe pile.

The first traction oil cylinder 311 and the second traction oil cylinder 331 are controlled to be pressurized, piston rods are pushed, the first push-pull rod 312 and the second push-pull rod 332 respectively push the first anchor ear 32 and the second anchor ear 34 until being completely closed, and the lower section pipe pile 1A is clamped.

S3: and (3) lifting the upper section pipe pile to approach the lower section pipe pile, moving the bottom end of the upper section pipe pile into the first anchor ear and the second anchor ear, gathering the second long slat through the steel rope assembly, and forcing the bottom end of the upper section pipe pile to approach the top end of the lower section pipe pile until the second long slat is parallel to the first long slat.

The third traction component 363 is started to tighten the steel wire rope 361, the second long strip 374 is gradually folded upwards in the process, the bottom end of the upper section pipe pile 1B which is forcibly lifted is closed to the top end of the lower section pipe pile 1A until the second long strip 374 is also in a vertical state, the second long strip 374 and the first long strip 372 are connected into a straight line, a cylindrical barrel is formed, the state is shown in fig. 2, and the upper section pipe pile and the lower section pipe pile are completely centered and kept vertical.

S4: two welding machines are symmetrically arranged on two sides of a tubular pile joint, synchronous welding is respectively carried out, after one circle of welding is carried out, welding slag is cleaned, and one circle of welding is carried out.

S5: and removing the tubular pile joint vertical centering device, and performing repair welding on the shielding part.

S6: and (5) after the welding line is cooled, continuously drilling the tubular pile, and repeatedly executing the steps S1-S5 until the construction of one tubular pile is completed.

And cooling for at least about 20 minutes after welding, continuously drilling the tubular pile, and completing the construction of the whole tubular pile according to the steps.

According to the vertical centering device for the tubular pile joint and the tubular pile construction method, the leveling mechanism is used for supporting the platform plate to keep a horizontal state, the first anchor ear and the second anchor ear are close to the tubular pile when the first traction component and the second traction component in the centering mechanism act, the top end of the first anchor ear and the top end of the second anchor ear are folded by the steel rope component, the bottom end of the upper tubular pile is forced to be close to the top end of the lower tubular pile, and vertical centering operation of the tubular pile joint is achieved; the vertical centering device for the tubular pile joint has simple structure and does not increase extra construction cost; the construction method of the invention realizes the purpose of quickly adjusting the perpendicularity of the pipe pile and the concentricity of the upper and lower pipe pile joints, greatly reduces the centering error, can quickly finish pile splicing, and has good vertical centering effect; the whole vertical centering operation process is easy to implement, has low operation difficulty and very high pile extension efficiency.

The invention has been further described with reference to specific embodiments, but it should be understood that the detailed description is not to be construed as limiting the spirit and scope of the invention, but rather as providing those skilled in the art with the benefit of this disclosure with the benefit of their various modifications to the described embodiments.

Claims (10)

1. A vertical centering device for a tubular pile joint is characterized by comprising a platform plate, a leveling mechanism and a centering mechanism which are arranged on the platform plate, wherein,

an alignment notch for connecting the tubular piles is formed in one side of the platform plate;

the at least two leveling mechanisms are arranged on the periphery of the alignment notch in a scattered manner so as to support the platform plate to keep a horizontal state;

the centering mechanism comprises a first traction assembly, a first hoop, a second traction assembly, a second hoop and a movable rotating shaft; the movable rotating shaft is vertically fixed on the platform plate and is close to the alignment notch; one ends of the first anchor ear and the second anchor ear are rotationally connected to the movable rotating shaft; the first traction assembly and the second traction assembly are arranged on the platform plate, the movable ends of the first traction assembly and the second traction assembly are respectively hinged with the first anchor ear and the second anchor ear, and the first anchor ear and the second anchor ear are close to or far away from the tubular pile when the first traction assembly and the second traction assembly act;

the centering mechanism further comprises a steel rope component for folding or releasing the top ends of the first hoop and the second hoop.

2. The vertical centering device for tubular pile joints according to claim 1, wherein the first anchor ear and the second anchor ear each comprise at least one arc-shaped support bar, a plurality of parallel first long strips fixed on the arc surface of the arc-shaped support bar, an annular rotating shaft fixedly connected with the top end of the first long strips, and a plurality of second long strips with the bottom end rotatably connected with the annular rotating shaft,

the arc-shaped supporting bars and the annular rotating shaft are horizontally arranged, and are both in rotary connection with the movable rotating shaft;

the steel rope component is used for folding or releasing the upper end of the second long strip plate.

3. A pipe pile joint vertical centering apparatus according to claim 2, wherein said steel rope assembly comprises a steel rope penetrating through the upper ends of all said second elongated plates and slidably connected to said second elongated plates, a hanger connected to the middle section of said steel rope, and a third traction assembly connected to said hanger,

the two ends of the steel wire rope are provided with anchor upsets, and the anchor upsets are abutted against the second long strip plate when the steel wire rope is tightened;

and when the third traction assembly acts, the steel wire rope is enabled to fold or release the second long strip plate.

4. The vertical centering device for tubular pile joints according to claim 2, wherein the sum of the lengths of the annular rotary shafts of the first anchor ear and the second anchor ear is matched with the peripheral dimension of the tubular pile; the dimensions of the arc-shaped supporting strips and the annular rotating shaft are consistent.

5. The vertical centering device for tubular pile joints according to claim 2, wherein a plurality of first shaft sleeves corresponding to the arc-shaped supporting bars and the annular rotating shafts one by one are sleeved on the movable rotating shafts, and the arc-shaped supporting bars and the annular rotating shafts are fixedly connected with the first shaft sleeves; the annular rotating shaft is sleeved with a plurality of second sleeves which are in one-to-one correspondence with the second long strips, and the bottom ends of the second long strips are fixedly connected with the second sleeves.

6. A tubular pile joint vertical centering device as claimed in claim 2, wherein said second elongate strip is in a vertical position when said cable assembly is folded over the upper end of said second elongate strip; when the steel rope component releases the upper end of the second long slat, the upper end of the second long slat is outwards diffused to be umbrella-shaped.

7. The vertical centering device of a tubular pile joint according to claim 1, wherein said first traction assembly comprises a first traction cylinder and a first push-pull rod, and said second traction assembly comprises a second traction cylinder and a second push-pull rod, wherein,

one end of the first push-pull rod is hinged with a piston rod of the first traction oil cylinder, the other end of the first push-pull rod is hinged with the first anchor ear, and the first traction oil cylinder pushes or withdraws the first anchor ear through the first push-pull rod to enable the first anchor ear to be close to or far away from the pipe pile;

one end of the second push-pull rod is hinged with a piston rod of the second traction oil cylinder, the other end of the second push-pull rod is hinged with the second anchor ear, and the second traction oil cylinder pushes or withdraws the second anchor ear through the second push-pull rod so that the second anchor ear is close to or far away from the pipe pile.

8. The vertical centering device for tubular pile joint according to claim 1, wherein the leveling mechanism comprises a leveling cylinder, a grounding pallet and a spherical hinge, wherein,

the cylinder body of the leveling cylinder is fixed on the upper surface of the platform plate, and a piston rod of the leveling cylinder downwards penetrates through the platform plate and is connected with the grounding support plate through the spherical hinge;

the grounding support plate is positioned on the ground.

9. A tubular pile connector vertical centring device according to claim 4, wherein the upper surface of the platform plate is provided with at least one horizontal bubble.

10. A method of pipe pile construction using the pipe pile joint vertical centring device according to any of claims 2 to 9, the method comprising the steps of:

s1: leveling the pile site, and adjusting the leveling mechanism to enable the platform plate to be kept in a horizontal state;

s2: when the pile sinking of the lower section pipe pile is stopped until the height from the ground is about 0.5-1.0 m, controlling the first traction assembly and the second traction assembly to enable the first anchor ear and the second anchor ear to be close to the lower section pipe pile, and enabling the first long slat to clamp the lower section pipe pile;

s3: lifting the upper section pipe pile to approach the lower section pipe pile, moving the bottom end of the upper section pipe pile into the first anchor ear and the second anchor ear, gathering the second long slat through the steel rope component, forcing the bottom end of the upper section pipe pile to approach the top end of the lower section pipe pile until the second long slat is parallel to the first long slat;

s4: symmetrically arranging two welding machines on two sides of a tubular pile joint, respectively and synchronously welding, cleaning welding slag after one circle of welding is completed, and fully welding one circle of welding slag;

s5: removing the tubular pile joint vertical centering device, and performing repair welding on the shielding part;

s6: and (5) after the welding line is cooled, continuously drilling the tubular pile, and repeatedly executing the steps S1-S5 until the construction of one tubular pile is completed.

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