A vertical centering device for pipe pile joints and a pipe pile construction method

Abstract

The present invention relates to the technical field of construction and transportation engineering, and specifically discloses a vertical centering device for pipe pile joints and a pipe pile construction method. The device includes a platform plate, a leveling mechanism and a centering mechanism installed on the platform plate. A counterpoint notch for pipe pile connection is provided on one side of the platform plate. There are at least two leveling mechanisms, which are dispersedly installed on the outer periphery of the counterpoint notch to support the platform plate to maintain a horizontal state. The centering mechanism includes a first traction assembly, a first hoop, a second traction assembly, a second hoop and a movable rotating shaft. The centering mechanism further includes a steel wire rope assembly for gathering or releasing the top ends of the first hoop and the second hoop. The present invention achieves the purpose of quickly adjusting the verticality of the pipe pile and the concentricity of the upper and lower pipe pile joints, greatly reduces the centering error, can thus quickly complete the pile connection, has a good vertical centering effect, the whole vertical centering operation process is easy to implement, the operation difficulty is low, and it has a very high pile connection efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of construction and traffic engineering, and particularly relates to a vertical centering device for pipe pile joints and a pipe pile construction method. Background Art

[0002] Prestressed concrete pipe piles have been widely promoted and applied in China for 40 to 50 years, and are commonly used in building engineering, municipal engineering, highway, high-speed railway, port and wharf engineering, and offshore platform engineering, etc. There are mainly three major construction pile driving methods for prestressed concrete pipe piles, namely the soil-extruding hammering method, static pressure method, and non-soil-extruding following drilling method, center digging method, etc. Except for offshore platform and port and wharf engineering, the precast length of pipe piles can reach 50 m. For other land transportation, restricted by the minimum curvature radius of highway turning, the length of a single-section pipe pile generally does not exceed 20 m. When the thickness of the soft soil layer is relatively large, the buried depth of the pile foundation is large, and pile splicing treatment is required. The commonly used pile splicing methods are welding method and mechanical joint method. No matter which joint type, it is relatively difficult to center the joint, and it takes a long time. The centering error of the joint also affects the verticality and bearing performance of the pile. Finding a method for verticality control and rapid centering can greatly improve the pile splicing efficiency and reduce the verticality deviation and centering concentricity deviation.

[0003] Regarding the centering method of pipe pile joints, in the publicly available literature, the disclosed patents are divided into two categories. One is the mechanical joint, and the other is the centering auxiliary device. Among them, for the mechanical joint, such as the patent CN216428268U (PHC pipe pile joint anti-displacement device), although this solution can limit the sway of the second pipe pile, it is quite difficult and time-consuming to align all the connecting pin rods and connecting holes and all the 8 groups of installation holes and the connecting cylinder during implementation. In the patent CN101519877A (multi-head quick strong pull docking fastener and precast member), the connecting plug is paired with the top pull nut, and the number is equal to the number of prestressed steel bars in the pipe pile. It is very difficult to insert after aligning all the connecting plugs and the top pull nuts, which is time-consuming and laborious. In the patent CN218148311U (a PHC pipe pile with joint positioning and assembly function), although it is convenient to insert during pile connection, the additional joint increases the additional cost and has weak anti-pulling ability, which is not conducive to engineering use. In the patent CN212405125U (a positioning structure between prestressed pipe piles), there are many positioning pipes and positioning sleeves in this solution, and it is quite difficult to insert them after all are aligned, which affects the pile connection efficiency, and the built-in positioning pipes and positioning sleeves increase the additional construction cost. In the patent CN216809866U (a pin-type quick mechanical joint for prestressed pipe pile connection details), similarly, the upper pipe pile and the lower pipe pile are connected through insertion rods and slots, with a large number and difficult alignment, and there are accessory structures both inside and outside the joint, increasing the additional cost. In the patent CN115075235A (a prestressed concrete pipe pile connection structure and its construction method), a guiding column is provided inside the lower pile joint, which is convenient for pile connection, but the internal guiding column limits the use of the middle excavation method and the pipe-jacking following drilling method, increases the additional cost, and the joint has weak anti-pulling ability.

[0004] The other type of centering auxiliary device, such as the patent CN217352469U (a tool for ensuring the verticality of pile connection), when conducting pipe pile docking, place this tool at the joint of the upper and lower pipe pile sections. However, the problem with this solution is that the inner diameter of the annular plates of the upper and lower pipe pile sections is equal to the outer diameter of the pipe pile, and it is quite difficult to align the lifted upper pipe pile with the annular plate and place it therein, and the annular plate cannot ensure the verticality of the pile. In the patent CN213625563U (a device for preventing PHC pipe pile joint misalignment), the connecting seat can be positioned through the positioning rod. However, in this solution, the centering deviation between the upper and lower pipe pile sections is reduced by tightening the nut, resulting in a large labor intensity for workers. In the patent CN217998051U (a device for preventing PHC pipe pile joint misalignment), the articulated bracket and the clamping member in this solution have a complex structure. There is only one set of limit members and adjusting bolts for each of the upper and lower pipe pile sections, and only the centering in one direction can be controlled, and the deviation in other directions cannot be controlled. In the patent CN209555924U (a pipe pile construction centering limiter), it can perform vertical positioning of the pipe pile and coaxial positioning of the joint, but its mechanism is complex, and both the upper and lower platforms need to be leveled, which takes a long time.

[0005] Therefore, those skilled in the art are in urgent need of finding a new technical solution to solve the above problems. Summary of the Invention

[0006] In view of the technical problems in the prior art, the present invention provides a pipe pile joint vertical centering device and a pipe pile construction method.

[0007] The present invention includes a pipe pile joint vertical centering device, which includes a platform plate, a leveling mechanism and a centering mechanism installed on the platform plate. Among them,

[0008] A centering notch for pipe pile connection is provided on one side of the platform plate;

[0009] There are at least two leveling mechanisms, which are dispersedly installed on the outer periphery of the centering notch to support the platform plate to maintain a horizontal state;

[0010] The centering mechanism includes a first traction component, a first hoop, a second traction component, a second hoop and a movable rotating shaft; the movable rotating shaft is vertically fixed on the platform plate and is close to the centering notch; one end of the first hoop and the second hoop is rotatably connected to the movable rotating shaft; the first traction component and the second traction component are installed on the platform plate, and their movable ends are respectively hinged to the first hoop and the second hoop. When the first traction component and the second traction component act, the first hoop and the second hoop are close to or away from the pipe pile;

[0011] The centering mechanism further includes a steel wire rope assembly for gathering or releasing the top ends of the first hoop and the second hoop.

[0012] Furthermore, both the first hoop and the second hoop include at least one arc-shaped support bar, a plurality of parallel first long plates fixed on the arc surface of the arc-shaped support bar, an annular rotating shaft fixedly connected to the top ends of the first long plates, and a plurality of second long plates whose bottom ends are rotatably connected to the annular rotating shaft. Among them,

[0013] Both the arc-shaped support bar and the annular rotating shaft are horizontally arranged, and both the arc-shaped support bar and the annular rotating shaft are rotatably connected to the movable rotating shaft;

[0014] The steel wire rope assembly gathers or releases the upper ends of the second long plates.

[0015] Furthermore, the steel wire rope assembly includes a steel wire rope passing through the upper ends of all the second long plates and slidably connected to the second long plates, a hook connected to the middle section of the steel wire rope, and a third traction component connected to the hook. Among them,

[0016] Anchoring heads are provided at both ends of the steel wire rope. When the steel wire rope is tightened, the anchoring heads are in contact with the second long plates;

[0017] When the third traction assembly operates, the wire rope retracts or releases the second long strip board.

[0018] Furthermore, the sum of the lengths of the annular rotating shafts of the first hoop and the second hoop matches the outer peripheral dimension of the pipe pile; the sizes of the arc-shaped support bars and the annular rotating shafts are consistent.

[0019] Furthermore, a number of first bushings corresponding one-to-one to the arc-shaped support bars and the annular rotating shafts are sleeved on the movable rotating shaft, and the arc-shaped support bars and the annular rotating shafts are fixedly connected to the first bushings; a number of second bushings corresponding one-to-one to the second long strip board are sleeved on the annular rotating shaft, and the bottom end of the second long strip board is fixedly connected to the second bushing.

[0020] Furthermore, when the wire rope assembly retracts the upper end of the second long strip board, the second long strip board is in a vertical state; when the wire rope assembly releases the upper end of the second long strip board, the upper end of the second long strip board diffuses outward in an umbrella shape.

[0021] Furthermore, the first traction assembly includes a first traction oil cylinder and a first push rod, and the second traction assembly includes a second traction oil cylinder and a second push rod, wherein,

[0022] One end of the first push rod is hinged to the piston rod of the first traction oil cylinder, and the other end is hinged to the first hoop. The first traction oil cylinder pushes or retracts the first hoop through the first push rod, so that the first hoop approaches or moves away from the pipe pile;

[0023] One end of the second push rod is hinged to the piston rod of the second traction oil cylinder, and the other end is hinged to the second hoop. The second traction oil cylinder pushes or retracts the second hoop through the second push rod, so that the second hoop approaches or moves away from the pipe pile.

[0024] Furthermore, the leveling mechanism includes a leveling oil cylinder, a grounding support plate and a spherical hinge, wherein,

[0025] The cylinder body of the leveling oil cylinder is fixed on the upper surface of the platform plate. The piston rod of the leveling oil cylinder penetrates downward through the platform plate and is connected to the grounding support plate through the spherical hinge;

[0026] The grounding support plate is located on the ground.

[0027] Furthermore, at least one spirit level is provided on the upper surface of the platform plate.

[0028] The present invention also includes a pipe pile construction method using the above-mentioned pipe pile joint vertical centering device, and the method includes the steps:

[0029] S1: Level the pile position site and adjust the leveling mechanism to keep the platform plate in a horizontal state;

[0030] S2: When the lower pipe pile is sunk to a height of about 0.5 to 1.0 m from the ground, the sinking is stopped, and the first traction assembly and the second traction assembly are controlled to make the first clamp and the second clamp approach the lower pipe pile, and the first strip clamps the lower pipe pile;

[0031] S3: Lift the upper pipe pile and bring it closer to the lower pipe pile, move the bottom end of the upper pipe pile into the first clamp and the second clamp, and retract the second long board through the steel rope assembly to force the bottom end of the upper pipe pile to move closer to the top end of the lower pipe pile until the second long board is parallel to the first long board;

[0032] S4: Arrange two welding machines symmetrically on both sides of the pipe pile joint, and weld them simultaneously. After welding a full circle, clean the welding slag and weld again a full circle;

[0033] S5: Remove the vertical centering device of the pipe pile joint and perform repair welding on the blocked part;

[0034] S6: After the weld is cooled, continue drilling into the pipe pile and repeat steps S1 to S5 until the construction of one pipe pile is completed.

[0035] The pipe pile joint vertical centering device and pipe pile construction method of the present invention have the following beneficial effects:

[0036] (1) The leveling mechanism in the present invention is used to support the platform plate to maintain a horizontal state. When the first traction assembly and the second traction assembly in the centering mechanism are in operation, the first clamp and the second clamp are brought close to the pipe pile, and the steel rope assembly retracts the top of the first clamp and the top of the second clamp, forcing the bottom end of the upper pipe pile to move closer to the top of the lower pipe pile, thereby realizing the vertical centering operation of the pipe pile joint; the structure of the vertical centering device of the pipe pile joint is simple and does not increase additional construction costs; the construction method of the present invention achieves the purpose of quickly adjusting the verticality of the pipe pile and the concentricity of the upper and lower pipe pile joints, greatly reducing the centering error, thereby quickly completing the pile connection, and the vertical centering effect is good; the entire vertical centering operation process is easy to implement, the operation difficulty is low, and it has a very high pile connection efficiency.

[0037] (2) The first clamp and the second clamp, which are composed of an arc-shaped support bar, a first long plate, an annular rotating shaft and a second long plate, control the first traction assembly and the second traction assembly to make the first clamp and the second clamp approach the lower section of the pipe pile, and make the first long plate clamp the lower section of the pipe pile, and the second long plate is retracted by the steel rope assembly to force the bottom end of the upper section of the pipe pile to move closer to the top end of the lower section of the pipe pile until the second long plate is parallel to the first long plate, so that the first clamp and the second clamp together form a concentric cylinder with the same diameter to clamp the pipe pile, so as to realize the forced centering of the joint of the pipe pile during the lifting process and reduce the deviation of the centering concentricity.

[0038] (3) During the construction of pipe piles, telescopic operations of the traction components at different positions are performed to achieve the movement of relevant structures. Therefore, only by controlling the traction components can the vertical alignment operation of the pipe piles be achieved, without the need for excessive manual participation, reducing the labor intensity of personnel. Moreover, the operation process is simple and easy to implement, accelerating the construction speed, and the construction quality is easier to control.

[0039] (4) In the leveling mechanism, the leveling of the platform plate is achieved by controlling the leveling oil cylinder. The lower end of the piston rod of the leveling oil cylinder is connected with a grounding support plate through a spherical hinge. The grounding support plate can bear the upper platform and construction loads, ensuring the stability and safety of pipe pile construction.

[0040] (5) The pipe pile joint vertical alignment device of the present invention arranges the leveling mechanism and the alignment mechanism on the same platform plate, reducing the perpendicularity deviation and alignment concentricity deviation of the pipe pile joints, which can greatly improve the control accuracy of the perpendicularity of the pipe pile joints and the forced alignment efficiency, and shorten the joint alignment time. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0042] Figure 1 It is a schematic side view structure diagram (one) of the pipe pile joint vertical alignment device according to the embodiment of the present invention;

[0043] Figure 2 It is a schematic side view structure diagram (two) of the pipe pile joint vertical alignment device according to the embodiment of the present invention;

[0044] Figure 3 It is a schematic top view structure diagram of the pipe pile joint vertical alignment device according to the embodiment of the present invention;

[0045] Figure 4 It is a partial structure schematic diagram (one) of the alignment mechanism in the pipe pile joint vertical alignment device according to the embodiment of the present invention;

[0046] Figure 5 It is a partial structure schematic diagram (two) of the alignment mechanism in the pipe pile joint vertical alignment device according to the embodiment of the present invention;

[0047] Figure 6 It is a partial structure schematic diagram (three) of the alignment mechanism in the pipe pile joint vertical alignment device according to the embodiment of the present invention;

[0048] Figure 7Partial structural schematic diagram (IV) of the centering mechanism in the pipe pile joint vertical centering device according to an embodiment of the present invention;

[0049] Figure 8 Partial structural schematic diagram (V) of the centering mechanism in the pipe pile joint vertical centering device according to an embodiment of the present invention;

[0050] Figure 9 Structural schematic diagram of the first bushing and the movable rotating shaft in the pipe pile joint vertical centering device according to an embodiment of the present invention;

[0051] Figure 10 Structural schematic diagram of the second bushing and the wire rope bushing in the pipe pile joint vertical centering device according to an embodiment of the present invention;

[0052] Figure 11 Step flowchart of the method for pipe pile construction according to an embodiment of the present invention;

[0053] Wherein: 1A - lower section pipe pile, 1B - upper section pipe pile, 11 - upper end plate of the lower section pipe pile, 12 - lower end plate of the upper section pipe pile, 2 - platform plate, 3 - centering mechanism, 31 - first traction assembly, 311 - first traction oil cylinder, 312 - first push rod, 32 - first hoop, 33 - second traction assembly, 331 - second traction oil cylinder, 332 - second push rod, 34 - second hoop, 35 - movable rotating shaft, 36 - steel wire rope assembly, 361 - steel wire rope, 362 - hook, 363 - third traction assembly, 364 - anchoring upset, 365 - wire rope bushing, 371 - arc support bar, 372 - first long plate, 373 - annular rotating shaft, 374 - second long plate, 375 - first bushing, 376 - second bushing, 4 - leveling mechanism, 41 - leveling oil cylinder, 42 - grounding support plate, 43 - spherical hinge, 5 - spirit level. Detailed implementation manners

[0054] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0055] A pipe pile joint vertical centering device according to an embodiment of the present invention, as Figures 1 to 10As shown in the figure, it includes a platform plate 2, a leveling mechanism 4 and a centering mechanism 3 installed on the platform plate 2. Among them, a positioning notch for connecting a pipe pile is provided on one side of the platform plate 2; there are at least two leveling mechanisms 4, which are dispersedly installed on the outer periphery of the positioning notch to support the platform plate 2 to maintain a horizontal state; the centering mechanism 3 includes a first traction assembly 31, a first hoop 32, a second traction assembly 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 positioning notch; one end of the first hoop 32 and the second hoop 34 is rotatably connected to the movable rotating shaft 35; the first traction assembly 31 and the second traction assembly 33 are installed on the platform plate 2, and their movable ends are respectively hinged to the first hoop 32 and the second hoop 34. When the first traction assembly 31 and the second traction assembly 33 act, the first hoop 32 and the second hoop 34 are close to or away from the pipe pile; the centering mechanism 3 further includes a steel wire rope assembly 36 for closing or releasing the top ends of the first hoop 32 and the second hoop 34.

[0056] In the embodiment of the present invention, the movable rotating shaft 35 can be selected as a steel cylindrical pin. The leveling mechanism 4 is used to support the platform plate 2 to maintain a horizontal state. When the first traction assembly 31 and the second traction assembly 33 in the centering mechanism 3 act, the first hoop 32 and the second hoop 34 are close to the pipe pile. During this process, since the first hoop 32 and the second hoop 34 are rotatably connected to the movable rotating shaft 35, they rotate along the movable rotating shaft 35. When they are close to the pipe pile, they surround the pipe pile; the steel wire rope assembly 36 closes the top ends of the first hoop 32 and the second hoop 34, forcing the bottom end of the upper section of the pipe pile 1B to approach the top end of the lower section of the pipe pile 1A, so as to realize the vertical centering operation of the pipe pile joint.

[0057] The embodiment of the present invention should also include a control device for controlling the states of the leveling mechanism 4, the first traction assembly 31, the second traction assembly 33 and the steel wire rope assembly 36 to realize the vertical centering of the pipe pile joint. This control device can be set on the platform plate 2 or can be operated by an operator holding it. The specific limitation is not made in this embodiment.

[0058] The pipe pile joint vertical centering device in the embodiment of the present invention does not increase the additional construction cost. Compared with many existing solutions that add built-in positioning or guiding components, its structure is not only simple, but also easy to implement and has a low operation difficulty. It realizes the purpose of quickly adjusting the verticality of the pipe pile and the concentricity of the upper and lower pipe pile joints, greatly reduces the centering error, so that the pile connection can be quickly completed, and the vertical centering effect is good, with a very high pile connection efficiency.

[0059] Specifically, such as Figures 1 to 6As shown, in the embodiment of the present invention, the first clamp 32 and the second clamp 34 each include at least one arc-shaped support bar 371, and a plurality of parallel first long strips 372 fixed on the arc surface of the arc-shaped support bar 371, and an annular shaft 373 fixedly connected to the top of the first long strip 372, and a plurality of second long strips 374 rotatably connected to the annular shaft 373 at the bottom, wherein the arc-shaped support bar 371 and the annular shaft 373 are both horizontally arranged, and the arc-shaped support bar 371 and the annular shaft 373 are rotatably connected to the movable shaft 35; the steel rope assembly 36 retracts or releases the upper end of the second long strip 374. Figure 7 As shown, it is a top view of the structure composed of the second long strip 374 and the annular rotating shaft 373 connected to the movable rotating shaft 35, as shown Figure 8 , which is a top view of the structure consisting of the first long strip 372 and the arc-shaped support strip 371 connected to the movable shaft 35.

[0060] In this embodiment, the arc support bar 371, the first long strip 372, and the annular shaft 373 form an arc cylindrical hoop structure, which is convenient for fitting with the outer surface of the pipe pile and then encircling the pipe pile. The bottom end of the second long strip 374 is rotatably connected to the annular shaft 373. When the steel rope assembly 36 retracts the upper end of the second long strip 374, the upper end of the second long strip 374 can fit with the outer wall of the pipe pile. At this time, the second long strip 374 is in a vertical state. Figure 2 When the steel rope assembly 36 releases the upper end of the second long plate 374, the upper end of the second long plate 374 spreads outward in an umbrella shape, and the upper end is away from the pile, such as Figure 1 and Figure 5 , Figure 6 shown.

[0061] Preferably, a plurality of first sleeves 375 corresponding to the arc-shaped support strips 371 and the annular shaft 373 are sleeved on the movable shaft 35, and the arc-shaped support strips 371 and the annular shaft 373 are fixedly connected to the first sleeves 375, and the positions are as follows: Figure 1 , Figure 2 and Figure 5 As shown, further, Figure 9 Shown are installation details.

[0062] Preferably, in order to make the rotation of the second long strip 374 relative to the annular rotating shaft 373 smoother, a plurality of second shaft sleeves 376 corresponding to the second long strip 374 one by one are sleeved on the annular rotating shaft 373, and the bottom end of the second long strip 374 is fixedly connected to the second shaft sleeve 376. More preferably, a limiting groove matching the position and quantity of the second long strip 374 is provided on the annular rotating shaft 373 to prevent the second long strip 374 from sliding on the annular rotating shaft 373. In addition, the rotation angle of the second long strip 374 along the annular rotating shaft 373 is also limited, so that when the steel rope assembly 36 releases the second long strip 374, it is in the shape of Figure 1 and Figure 5 angle.

[0063] The embodiments of the present invention do not limit the quantity of the arc-shaped support bars 371, the first long strips 372, and the second long strips 374. For example, Figure 1 and Figure 2 In, two parallel arc-shaped support bars 371 are provided, making 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 more firm and reliable. More preferably, as shown in Figure 6 , the same quantity of the first long strips 372 and the second long strips 374 are provided, and their connection positions with the annular rotating shaft 373 are corresponding. When the steel rope assembly 36 retracts the upper ends of the second long strips 374, the first hoop 32 and the second hoop 34 are combined into a cylindrical hoop together.

[0064] Specifically, in the embodiments of the present invention, the sum of the lengths of the annular rotating shafts 373 of the first hoop 32 and the second hoop 34 matches the outer peripheral dimension of the pipe pile; the dimensions of the arc-shaped support bars 371 and the annular rotating shaft 373 are the same. When the pipe pile is centered, the first hoop 32 and the second hoop 34 are in close contact with the outer surface of the pipe pile.

[0065] Specifically, as shown in Figures 1 to 5 , in the embodiments of the present invention, the steel rope assembly 36 includes a steel wire rope 361 passing 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 the middle section of the steel wire rope 361, and a third traction assembly 363 connected to the hook 362. Among them, anchoring heads 364 are provided at both ends of the steel wire rope 361, and when the steel wire rope 361 is tightened, the anchoring heads 364 are in contact with the second long strips 374; when the third traction assembly 363 acts, the steel wire rope 361 retracts or releases the second long strips 374. Preferably, in order to make the relative sliding between the second long strips 374 and the steel wire rope 361 smoother, a steel wire rope shaft sleeve 365 is sleeved on the steel wire rope 361. For the specific shape of the steel wire rope shaft sleeve 365, please refer to Figure 10 .

[0066] Specifically, as shown in Figure 3As shown in the figure, the first traction assembly 31 in the embodiment of the present invention includes a first traction oil cylinder 311 and a first push rod 312, and the second traction assembly 33 includes a second traction oil cylinder 331 and a second push rod 332. Among them, one end of the first push rod 312 is hinged to the piston rod of the first traction oil cylinder 311, and the other end is hinged to the first clamp 32. The first traction oil cylinder 311 pushes or retracts the first clamp 32 through the first push rod 312, so that the first clamp 32 approaches or moves away from the pipe pile; one end of the second push rod 332 is hinged to the piston rod of the second traction oil cylinder 331, and the other end is hinged to the second clamp 34. The second traction oil cylinder 331 pushes or retracts the second clamp 34 through the second push rod 332, so that the second clamp 34 approaches or moves away from the pipe pile.

[0067] In this embodiment, a limit groove is provided at the installation positions of the first traction oil cylinder 311 and the second traction oil cylinder 331 to limit the opening and closing angles of the first clamp 32 and the second clamp 34, so as to avoid excessive opening and avoid equipment damage caused by excessive fitting to the pipe pile.

[0068] Specifically, as Figure 1 and Figure 2 shown, the leveling mechanism 4 in the embodiment of the present invention includes a leveling oil cylinder 41, a grounding support plate 42 and a spherical hinge 43. Among them, the cylinder body of the leveling oil cylinder 41 is fixed on the upper surface of the platform plate 2, the piston rod of the leveling oil cylinder 41 penetrates downward through the platform plate 2, and is connected to the grounding support plate 42 through the spherical hinge 43; the grounding support plate 42 is located on the ground. In this embodiment, the spherical hinge 43 is selected to adapt to the changes in the uneven site. Preferably, the embodiment of the present invention includes 3 leveling mechanisms 4, as Figure 3 shown, which are 4A, 4B, and 4C respectively.

[0069] Specifically, as Figure 1 shown, at least one spirit level 5 is provided on the upper surface of the platform plate 2 in the embodiment of the present invention. As Figure 3 shown, corresponding to the number of leveling mechanisms 4, 3 spirit levels 5 are also provided and are distributed near the leveling mechanisms 4, which are 5A, 5B, and 5C respectively. When determining whether the leveling mechanism 4 levels the platform plate 2, observe the changes of the 3 spirit levels 5, keep all the spirit levels 5 in a horizontal state, lock the leveling oil cylinder 41 after the platform plate 2 is leveled, and then perform the operation of centering the pipe pile.

[0070] The present invention also provides an embodiment of a pipe pile construction method using the pipe pile joint vertical centering device of the above embodiment. As Figure 11 shown, the method includes the steps:

[0071] S1: Level the pile position site and adjust the leveling mechanism to keep the platform plate in a horizontal state.

[0072] In combination with the aforementioned embodiment of the vertical centering device for the pipe pile joint, when implementing this step, all three grounding plates are grounded, the three 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 to 1.0 m, and the foundation under the grounding plate is compacted.

[0073] S2: When the lower pipe pile is sunk to a height of about 0.5 to 1.0 m from the ground, the sinking is stopped, and the first traction assembly and the second traction assembly are controlled to make the first clamp and the second clamp approach the lower pipe pile, and the first long strip clamps the lower pipe pile.

[0074] The first traction cylinder 311 and the second traction cylinder 331 are controlled to increase pressure to push the piston rod, and the first push-pull rod 312 and the second push-pull rod 332 respectively push the first clamp 32 and the second clamp 34 until they are completely closed to clamp the lower section pipe pile 1A.

[0075] S3: Lift the upper pipe pile and bring it closer to the lower pipe pile, move the bottom end of the upper pipe pile into the first clamp and the second clamp, and retract the second long strip through the steel rope assembly to force the bottom end of the upper pipe pile to move closer to the top of the lower pipe pile until the second long strip is parallel to the first long strip.

[0076] The third traction assembly 363 is turned on to tighten the wire rope 361. During this process, the second strip 374 is also gradually retracted upward, forcing the bottom end of the upper pipe pile 1B to move closer to the top end of the lower pipe pile 1A, until the second strip 374 is also in a vertical state and is connected to the first strip 372 in a straight line to form a cylindrical tube. Figure 2 In the state shown, the upper and lower sections of the pipe piles are completely aligned and remain vertical.

[0077] S4: Arrange two welding machines symmetrically on both sides of the pipe pile joint and weld simultaneously. After welding a full circle, clean the welding slag and weld again a full circle.

[0078] S5: Remove the vertical centering device of the pipe pile joint and perform repair welding on the blocked parts.

[0079] S6: After the weld is cooled, continue drilling into the pipe pile and repeat steps S1 to S5 until the construction of one pipe pile is completed.

[0080] After welding, cool for at least 20 minutes, continue drilling into the pipe pile and complete the construction of a whole pipe pile according to the above steps.

[0081] The pipe pile joint vertical centering device and pipe pile construction method of the embodiments of the present invention, the leveling mechanism is used to support the platform plate to maintain a horizontal state, the first traction assembly and the second traction assembly in the centering mechanism are actuated to make the first clamp and the second clamp close to the pipe pile, the steel rope assembly retracts the top of the first clamp and the top of the second clamp, forcing the bottom end of the upper section pipe pile to move closer to the top of the lower section pipe pile, thereby realizing the vertical centering operation of the pipe pile joint; the structure of the pipe pile joint vertical centering device is streamlined, and no additional construction cost is added; the construction method of the present invention realizes the purpose of quickly adjusting the verticality of the pipe pile and the concentricity of the upper and lower sections of the pipe pile joints, greatly reducing the centering error, thereby being able to quickly complete the pile connection, and the vertical centering effect is good; the entire vertical centering operation process is easy to implement, the operation difficulty is low, and it has a very high pile connection efficiency.

[0082] The present invention is further described above with the aid of specific embodiments. However, it should be understood that the specific description here should not be construed as limiting the essence and scope of the present invention. Various modifications made to the above embodiments by ordinary technicians in the field after reading this specification are all within the scope of protection of the present invention.

Claims

1. A vertical centering device for pipe pile joints, characterized in that, It includes a platform plate, a leveling mechanism and a centering mechanism installed on the platform plate. Among them, A counterpoint notch for connecting a pipe pile is provided on one side of the platform plate; There are at least two leveling mechanisms, which are dispersedly installed on the outer periphery of the counterpoint notch to support the platform plate to maintain a horizontal state; The centering mechanism includes a first traction component, a first hoop, a second traction component, a second hoop and a movable rotating shaft; the movable rotating shaft is vertically fixed on the platform plate and is close to the counterpoint notch; one end of the first hoop and the second hoop is rotatably connected to the movable rotating shaft; the first traction component and the second traction component are installed on the platform plate, and the movable ends of the two are respectively hinged to the first hoop and the second hoop. When the first traction component and the second traction component act, the first hoop and the second hoop approach or move away from the pipe pile; The centering mechanism further includes a steel wire rope assembly for closing or releasing the tops of the first hoop and the second hoop; Both the first hoop and the second hoop include at least one arc-shaped support bar, a plurality of parallel first long plates fixed on the arc surface of the arc-shaped support bar, a ring-shaped rotating shaft fixedly connected to the top end of the first long plate, and a plurality of second long plates with the bottom end rotatably connected to the ring-shaped rotating shaft. Among them, the arc-shaped support bar and the ring-shaped rotating shaft are both horizontally arranged, and the arc-shaped support bar and the ring-shaped rotating shaft are both rotatably connected to the movable rotating shaft; the steel wire rope assembly closes or releases the upper ends of the second long plates.

2. The vertical centering device for pipe pile joints as described in claim 1, characterized in that, The steel wire rope assembly includes a steel wire rope passing through the upper ends of all the second long plates and slidably connected to the second long plates, a hook connected to the middle section of the steel wire rope, and a third traction component connected to the hook. Among them, Anchoring heads are provided at both ends of the steel wire rope. When the steel wire rope is tightened, the anchoring heads are in contact with the second long plates; When the third traction component acts, the steel wire rope closes or releases the second long plates.

3. The vertical centering device for pipe pile joints according to claim 1, characterized in that, The sum of the lengths of the ring-shaped rotating shafts of the first hoop and the second hoop matches the outer peripheral dimension of the pipe pile; the sizes of the arc-shaped support bar and the ring-shaped rotating shaft are the same.

4. A vertical centering device for a pipe pile joint according to claim 1, characterized in that, A plurality of first bushings corresponding to the arc-shaped support bar and the ring-shaped rotating shaft are sleeved on the movable rotating shaft, and the arc-shaped support bar and the ring-shaped rotating shaft are fixedly connected to the first bushings; a plurality of second bushings corresponding to the second long plates are sleeved on the ring-shaped rotating shaft, and the bottom end of the second long plate is fixedly connected to the second bushing.

5. The vertical centering device for pipe pile joints according to claim 1, characterized in that, When the steel wire rope assembly closes the upper ends of the second long plates, the second long plates are in a vertical state; when the steel wire rope assembly releases the upper ends of the second long plates, the upper ends of the second long plates spread outwards in an umbrella shape.

6. The vertical centering device for pipe pile joints according to claim 1, characterized in that The first traction component includes a first traction oil cylinder and a first push rod, and the second traction component includes a second traction oil cylinder and a second push rod. Among them, One end of the first push-pull rod is hinged to the piston rod of the first traction oil cylinder, and the other end is hinged to the first clamping hoop. The first traction oil cylinder pushes or retracts the first clamping hoop through the first push-pull rod to make the first clamping hoop approach or move away from the pipe pile. One end of the second push-pull rod is hinged to the piston rod of the second traction cylinder, and the other end is hinged to the second clamp. The second traction cylinder pushes or retracts the second clamp through the second push-pull rod to make the second clamp approach or move away from the pipe pile.

7. The vertical centering device for pipe pile joints according to claim 1, characterized in that, The leveling mechanism includes a leveling cylinder, a ground support plate and a ball joint, wherein: The cylinder body of the leveling oil cylinder is fixed on the upper surface of the platform plate, and the piston rod of the leveling oil cylinder penetrates downward through the platform plate and is connected to the ground support plate through the ball joint; The grounding bracket is located on the ground.

8. The vertical centering device for pipe pile joints according to claim 3, characterized in that, At least one level bubble is disposed on the upper surface of the platform plate.

9. A pipe pile construction method using the pipe pile joint vertical centering device according to any one of claims 1 to 8, characterized in that, The method comprises the steps of: S1: Leveling the pile site and adjusting the leveling mechanism to keep the platform plate in a horizontal state; S2: When the lower pipe pile is sunk to a height of about 0.5 to 1.0 m from the ground, the sinking is stopped, and the first traction assembly and the second traction assembly are controlled to make the first clamp and the second clamp approach the lower pipe pile, and the first strip clamps the lower pipe pile; S3: lifting the upper pipe pile to move it closer to the lower pipe pile, moving the bottom end of the upper pipe pile into the first clamp and the second clamp, and retracting the second long board through the steel rope assembly to force the bottom end of the upper pipe pile to move closer to the top end of the lower pipe pile until the second long board is parallel to the first long board; S4: Arrange two welding machines symmetrically on both sides of the pipe pile joint, and weld them simultaneously. After welding a full circle, clean the welding slag and weld again a full circle; S5: removing the vertical centering device of the pipe pile joint and performing repair welding on the blocked part; S6: After the weld is cooled, continue drilling into the pipe pile and repeat steps S1 to S5 until the construction of one pipe pile is completed.

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