Auxiliary mounting device for concrete pipe pile and construction method

Abstract

The invention relates to an auxiliary mounting device for a concrete pipe pile and a construction method, the auxiliary mounting device comprises a detachable assembly type base, a pin shaft pull rod bearing part, a plug pin locking piece and a horizontal automatic leveling bubble, the detachable assembly type base comprises two sets of [-shaped steel frames, and constraint angle steel perpendicular to the steel frames is welded to the two side ends and the middle of the steel frames; the bottom and the upper portion of the restraining angle steel are respectively connected with a steel frame, the horizontal automatic leveling bubble is installed on the inner side of the angle steel on one side of the bottom of the detachable assembly type base, and the pin shaft pull rod bearing portion is installed between the two restraining angle steel on the middle edge of the steel frame on the upper portion of the detachable assembly type base. By means of efficient positioning of the device, the problem of positioning deviation caused by unrestraint of the steel pile tip is solved, the problem of poor quality of manual auxiliary lifting welding operation and the technical barrier of suspended falling positioning deviation are overcome, meanwhile, the falling track of a pile body is restrained through combined action of the auxiliary device and a pile cap, and the welding quality is improved. And the perpendicularity can be controlled and checked, and the construction is efficient and accurate.

Description

Technical Field

[0001] The invention relates to the technical field of concrete pipe pile construction, and in particular to an auxiliary installation device for concrete pipe piles and a construction method. Background Art

[0002] With the maturity of the construction and technical system of prestressed pipe pile foundation in my country, the current prestressed pipe pile construction process can achieve fast, efficient, high-quality and high-quality results; the traditional pile foundation construction adopts cast-in-place form, which is difficult to meet the current call for "clean production and energy conservation"; and the prestressed concrete pipe piles are produced and processed by the factory, which greatly reduces the pollution to the environment, and its pile-making process is also very efficient. The existing process form of "hammering method" construction adopts new energy machinery to effectively save energy. At the same time, the overall production process achieves the purpose of saving resources, which is highly consistent with the country's "sustainable development" strategy.

[0003] The prestressed pipe pile is cylindrical in shape, and the lower end is connected to the pipe pile with a cross steel pile tip. The pipe pile specifications currently produced by the industry are 6m-15m and other specifications. During construction, the piles are arranged according to different geological bearing layers. There are single-section piles and multi-section piles. Regardless of single or multi-section piles, they are restricted by the pile accuracy and sinking trajectory of the first section. Since there are many factors that affect the efficiency and quality of the pile sinking during the welding, positioning, verticality verification, and insertion of the first section of the pile into the soil, which directly affects the stress of the upper main structure, it is necessary to study and control the accuracy control and sinking trajectory of the pile in this process.

[0004] In the existing construction of prestressed pipe piles, the first section of the pile tip welding, positioning, verticality check, and insertion into the soil process rely on manual control; the pile tip welding process is suspended above the ground and docked with the pile end plate, which is difficult to operate and the quality cannot be guaranteed; the positioning, verticality check, and insertion into the soil process are supplemented by small homemade tools, such as steel bars and plumb bobs, as reference lines for control, which makes positioning difficult, the verticality error of insertion into the soil is large, and the labor cost is high. In addition, improving the construction efficiency of the first section of the pile tip welding, positioning, verticality check, and insertion into the soil process is also a necessary link for research and promotion.

[0005] Therefore, how to provide a device for solving the positioning, verticality verification and pile tip welding of prestressed concrete pipe piles, and provide a matching construction method to meet construction needs, is an important issue faced by technical personnel in this field. Summary of the invention

[0006] The present invention aims to solve the deficiencies of the prior art and provides an auxiliary installation device for concrete pipe piles and a construction method.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A device for auxiliary installation of concrete pipe piles comprises a detachable assembled base, a pin pull rod supporting part, a latch lock and a horizontal automatic leveling bubble. The detachable assembled base comprises two groups of "["-shaped steel frames. The two side ends and the middle of the steel frames are welded with constraint angle steels perpendicular to the steel frames. The bottom and the top of the constraint angle steels are each connected to a steel frame. The two groups of steel frames form a quadrilateral frame through the latch lock. The horizontal automatic leveling bubble is installed on the inner side of the angle steel on one side of the bottom of the detachable assembled base. The pin pull rod supporting part is installed between the two constraint angle steels on the middle edge of the steel frame on the upper part of the detachable assembled base.

[0009] The detachable assembled base is welded by equilateral angle steels.

[0010] The pin tie rod supporting part includes pin tie rod reinforcement, pin tie rod supporting channel steel and pin tie rod supporting channel steel. The two pin tie rod supporting channel steels are welded between two constraint angle steels on the steel frame on the upper part of the detachable assembled base. The two pin tie rod supporting channel steels are each slidably connected in the two pin tie rod supporting channel steels, and the two pin tie rod supporting channel steels are connected by the pin tie rod reinforcement.

[0011] The latch lock comprises a pin plate and bolts, the bolts are welded at the connection between the two ends of the steel frame and the constraint angle steel, one end of the pin plate is provided with a circular hole, and the other end is provided with a meshing opening, the pin plate is rotatably connected to the bolts of one group of steel frames through the circular hole, and the pin plate is movably buckled on the bolts of another group of steel frames through the meshing opening.

[0012] A prestressed concrete pipe pile construction method uses a concrete pipe pile auxiliary installation device, and its specific construction steps are:

[0013] P1. Determine the construction pile position, measure and mark it, assemble the detachable assembled base, lock the detachable assembled base as a whole with the latch lock, and level the bottom of the detachable assembled base on the pile center by observing the horizontal automatic leveling bubble. Pull two diagonal lines at the bottom of the detachable assembled base to find out the centroid of the assembled detachable assembled base and align it with the pile center;

[0014] P2. Push the pin tie rod support part inwards and clamp it, place the steel pile tip on the pin tie rod support channel steel, and let the protruding part of the steel pile tip pass through the gap between the two pin tie rod support channel steels to limit the displacement of the steel pile tip, and then put the pile driver in place;

[0015] P3. Slip one end of the prestressed concrete pile into the pile cap of the pile driver and slowly lift it up, and slowly place the other end into the device until the end plate of the prestressed concrete pile fits the tip plate of the steel pile. Use two-sided symmetrical welding to weld the end plate of the pile and the tip plate of the steel pile. After the cooling time reaches the specified requirements, proceed to the next step of construction;

[0016] P4. After cooling, lift the prestressed concrete pile slightly to leave space for the pin tie rod support to move, pull out the pin tie rod support channel steel, and let the prestressed concrete pile slowly fall along the inner side of the device and be statically inserted into the soil;

[0017] P5. Use the upper and lower parts of the device to adjust the verticality, complete the welding, positioning and verticality verification of the steel pile tip, disassemble the device to separate the left and right parts, recycle it, and use it for the next pile.

[0018] A method for constructing prestressed concrete pipe piles. When the steel pile tip is welded, the pin tie rod supporting groove steels on the left and right sides of the pin tie rod supporting part support the flat plate of the steel pile tip. Below the flat plate of the steel pile tip is a cross protruding steel. One side of the cross protruding steel is perpendicular to the pin tie rod supporting steel groove, and the other side is parallel to the pin tie rod supporting steel groove, and the cross protruding steel passes through the gap between the two pin tie rod supporting groove steels.

[0019] The beneficial effects of the present invention are as follows: the present invention solves the problem of positioning deviation caused by the lack of constraint on the steel pile tip by utilizing the efficient positioning of the device itself, overcomes the difficult problem of poor quality of welding operations in manually assisted lifting and the technical barrier of positioning deviation in suspended falling, and at the same time, the auxiliary device and the pile cap work together to constrain the falling trajectory of the pile body, thereby achieving the effect of verticality control and verification, and the construction is efficient and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A top view of the present invention;

[0021] Figure 2 It is a front view of the present invention;

[0022] Figure 3 It is a top view of the pin pull rod supporting structure of the present invention;

[0023] Figure 4 It is a left view of the pin pull rod supporting structure of the present invention;

[0024] Figure 5 It is an enlarged schematic diagram of the latch lock component when the present invention is combined;

[0025] Figure 6 It is an enlarged schematic diagram of the latch lock member when the present invention is separated;

[0026] Figure 7 It is a top view of the steel pile tip welding stage of the present invention;

[0027] Figure 8 for Figure 7 Middle AA section view;

[0028] Fig. 9 It is a top view of the pile sinking and calibration stage of the present invention;

[0029] Fig.10 for Fig. 9 Middle BB section view;

[0030] In the figure: 1-detachable assembled base; 11-steel frame; 12-constraint angle steel; 2-pin tie rod support part; 21-pin tie rod steel bar; 22-pin tie rod support channel steel; 23-pin tie rod support channel steel; 3-latch lock; 31-pin plate; 311-round hole; 312-engaging opening; 32-bolt; 4-horizontal automatic leveling bubble; 5-steel pile tip;

[0031] The following is a detailed description of the embodiments of the invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0033] Construction principle: After the first section of the pile is covered with the pile cap, the pile bottom is suspended from the ground. The prestressed concrete pipe pile is slowly lifted and inserted into the device. Through the two states of the device itself, one state provides an operating platform for pile tip welding to eliminate the error of manual lifting and hanging docking. The other state releases the prestressed concrete pipe pile in the device and inserts it into the soil. The device itself is aligned with the center point of the pile position, and the upper and lower points are used to constrain the axis falling trajectory of the prestressed concrete pipe pile. The specific performance is as follows:

[0034] A. This application uses the socket principle, and uses the gap between the pin tie rod support channel steel 22 on both sides of the pin tie rod support part 2 to place the cross steel pile tip 5. During the pile tip welding stage, the welding platform is raised to limit the horizontal displacement of the pile end, and part of the vertical force is borne, so that the steel pile tip 5 fits the prestressed concrete pipe pile end plate, avoiding serious welding quality problems caused by excessive gaps in the contact area;

[0035] B. This application uses a detachable assembled base 1 and a pile cap to share the load and limit the vertical displacement of the prestressed concrete pipe pile body;

[0036] C. This application uses a square composed of four angle steels of a detachable assembled base 1, and uses the virtual center of the square (assisted by a simple operation pull line) to align the center point of the pile position to achieve precise positioning;

[0037] D. This application uses the "combination of geometric points and lines" to check and control the verticality of the prestressed concrete pipe piles through the constraints of the pile cap, the upper steel frame 11 of the device and the lower steel frame 11. It is more convenient than indirect verticality measurement methods such as "observing the verticality of the outer edge of the pile body" such as theodolite and plumb bob.

[0038] E. The assembleable and disassembleable design of the device solves the problem of recycling and reusing the prestressed concrete pipe piles after they are dropped and inserted into the soil. It also solves the problem that the device adopts an integral design and can only be recycled after the pile is sunk, which will cause collisions between the device and the pile body due to vibration.

[0039] F. A horizontal automatic leveling bubble 4 is installed at the bottom of the detachable assembly base 1 of the present application. When the device is used on an uneven ground, the bottom horizontal automatic leveling bubble 4 is used to level the device, thereby indirectly controlling the upper device components to perform their respective functions.

[0040] A device for auxiliary installation of concrete pipe piles comprises a detachable assembled base 1, a pin pull rod supporting part 2, a latch lock 3 and a horizontal automatic leveling bubble 4. The detachable assembled base 1 comprises two groups of "["-shaped steel frames 11. The two ends and the middle of the steel frames 11 are welded with constraint angle steels 12 perpendicular to the steel frames 11. The bottom and the top of the constraint angle steels 12 are each connected to a steel frame 11. The two groups of steel frames 11 form a quadrilateral frame through the latch lock 3. The horizontal automatic leveling bubble 4 is installed on the inner side of the angle steel on one side of the bottom of the detachable assembled base 1. The pin pull rod supporting part 2 is installed between the two constraint angle steels 12 on the middle side of the steel frame 11 on the upper part of the detachable assembled base 1.

[0041] The detachable assembled base 1 is welded from equilateral angle steels, the size of the equilateral angle steels is 50mm*5mm, the size of the detachable assembled base 1 is 620mm*620mm*1100mm, the detachable assembled base 1 vertically constrains the pile body, the centroid of the detachable assembled base 1 is used for positioning, and the verticality of the pile is checked and controlled up and down with the pile cap of the pile driver.

[0042] The pin tie rod supporting part 2 includes a pin tie rod reinforcement 21, a pin tie rod supporting channel steel 22 and a pin tie rod supporting channel steel 23. The pin tie rod reinforcement 21 is a ф6mm reinforcement, the pin tie rod supporting channel steel 22 and the pin tie rod supporting channel steel 23 are 5# channel steels, and the two pin tie rod supporting channel steels 23 are welded between two constraint angle steels 12 on the steel frame 11 on the upper part of the detachable assembled base 1. The two pin tie rod supporting channel steels 22 are each slidably connected in the two pin tie rod supporting channel steels 23. The two pin tie rod supporting channel steels 22 are connected by the pin tie rod reinforcement 21. The pin tie rod supporting channel steel 22 provides a welding platform during the welding stage of the steel pile tip 5, and at the same time constrains the horizontal displacement of the pile body. The detachable assembled base 1 is installed with a single-circle horizontal automatic leveling bubble 4 for device leveling.

[0043] The latch lock 3 includes a pin plate 31 and a bolt 32. The pin plate 31 is a 4mm thick aluminum foil sheet, and the bolt 32 is an M16mm bolt. The bolt 32 is welded at the connection between the two ends of the steel frame 11 and the constraint angle steel 12. A circular hole 311 is opened at one end of the pin plate 31, and a meshing opening 312 is opened at the other end. The pin plate 31 is rotatably connected to the bolt 32 of one group of steel frames 11 through the circular hole 311, and the pin plate 31 is movably buckled on the bolt 32 of another group of steel frames 11 through the meshing opening 312. The latch lock 3 is used for assembling and separating the detachable assembled base 1.

[0044] A prestressed concrete pipe pile construction method uses a concrete pipe pile auxiliary installation device, and its specific construction steps are:

[0045] P1. Determine the construction pile position, measure and mark it, assemble the detachable assembled base 1, lock the detachable assembled base 1 as a whole through the latch lock 3, and level the bottom of the detachable assembled base 1 and place it on the center of the pile by observing the horizontal automatic leveling bubble 4. Pull two diagonal lines at the bottom of the detachable assembled base 1 to find out the centroid of the assembled detachable assembled base 1 and align it with the center of the pile;

[0046] P2. The pin tie rod support part 2 is pushed inward and clamped, and the steel pile tip 5 is placed on the pin tie rod support channel steel 22. The protruding part of the steel pile tip 5 passes through the gap between the two pin tie rod support channel steels 22 to limit the displacement of the steel pile tip 5, and then the pile driver is in place;

[0047] P3. Slip one end of the prestressed concrete pile into the pile cap of the pile driver and slowly lift it up, and slowly place the other end into the device until the end plate of the prestressed concrete pile fits the end plate of the steel pile tip 5. Weld the end plate of the pile and the end plate of the steel pile tip 5 symmetrically on both sides. After the cooling time reaches the specified requirements, proceed to the next step of construction;

[0048] P4. After cooling, the prestressed concrete pile is slightly lifted to leave space for the pin tie rod support part 2 to move, the pin tie rod support channel steel 22 is pulled outward, and the prestressed concrete pile is slowly dropped along the inner side of the device and statically inserted into the soil, and inserted into the soil for 0.5m;

[0049] P5. Use the upper and lower parts of the device to adjust the verticality, complete the pile tip welding, positioning, and verticality verification, disassemble the device to separate the left and right sides, recycle it, and use it on the next pile.

[0050] A method for constructing prestressed concrete pipe piles. When the steel pile tip 5 is welded, the pin tie rod supporting channel steels 22 on the left and right sides of the pin tie rod supporting part 2 support the flat plate of the steel pile tip 5. Below the flat plate of the steel pile tip 5 is a cross protruding steel. One side of the cross protruding steel is perpendicular to the pin tie rod supporting steel channel 22, and the other side is parallel to the pin tie rod supporting steel channel 22, and the cross protruding steel passes through the gap between the two pin tie rod supporting channel steels 22.

[0051] The efficient positioning of the device itself reduces the need for manual positioning of the suspended end of the pile before inserting it into the soil. Relying on the operating platform provided by the device, the technical barriers of manual lifting and multi-person operation are overcome. The device also provides constraints on the falling trajectory of the pile, and adopts upper and lower point constraints to control the axis movement trajectory, so as to achieve verticality control and verification. This efficient and precise construction method for prestressed concrete pipe piles is necessary to be promoted.

[0052] In the description of the invention, it is to 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”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0053] 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 invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] In the 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 fixedly connected, detachably connected, or integrated; it can be mechanically connected, electrically connected, or able to communicate with each other; it can be directly connected, or indirectly connected 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 invention can be understood according to specific circumstances.

[0055] The invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the invention, or they are directly applied to other occasions without improvement, they are all within the scope of protection of the invention.

Claims

1. A device for auxiliary installation of concrete pipe piles, characterized in that: The invention comprises a detachable assembly base (1), a pin pull rod support part (2), a latch lock (3) and a horizontal automatic leveling bubble (4). The detachable assembly base (1) comprises two groups of "["-shaped steel frames (11). The two side ends and the middle of the steel frames (11) are welded with constraint angle steels (12) perpendicular to the steel frames (11). The bottom and the top of the constraint angle steels (12) are respectively connected to a steel frame (11). The two groups of steel frames (11) form a quadrilateral frame through the latch lock (3). The horizontal automatic leveling bubble (4) is installed on the inner side of the angle steel on one side of the bottom of the detachable assembly base (1). The pin pull rod support part (2) is installed between the two constraint angle steels (12) on the middle side of the steel frame (11) on the upper part of the detachable assembly base (1).

2. The auxiliary installation device for concrete pipe piles according to claim 1, characterized in that: The detachable assembled base (1) is welded from equilateral angle steels.

3. The auxiliary installation device for concrete pipe piles according to claim 1, characterized in that: The pin tie rod supporting part (2) includes a pin tie rod reinforcement (21), a pin tie rod supporting channel steel (22) and a pin tie rod supporting channel steel (23). The two pin tie rod supporting channel steels (23) are welded between two constraint angle steels (12) on the steel frame (11) at the upper part of the detachable assembled base (1). The two pin tie rod supporting channel steels (22) are each slidably connected in the two pin tie rod supporting channel steels (23). The two pin tie rod supporting channel steels (22) are connected by the pin tie rod reinforcement (21).

4. The auxiliary installation device for concrete pipe piles according to claim 1, characterized in that: The latch lock (3) comprises a pin plate (31) and a bolt (32). The bolt (32) is welded to the connection between the two ends of the steel frame (11) and the constraint angle steel (12). A round hole (311) is provided at one end of the pin plate (31) and a meshing opening (312) is provided at the other end. The pin plate (31) is rotatably connected to the bolt (32) of one group of steel frames (11) through the round hole (311), and the pin plate (31) is movably buckled on the bolt (32) of another group of steel frames (11) through the meshing opening (312).

5. A method for constructing prestressed concrete pipe piles, using a concrete pipe pile auxiliary installation device as claimed in any one of claims 1 to 4, characterized in that: The specific construction steps are: P1. Determine the construction pile position, measure and mark the position, assemble the detachable assembled base (1), lock the detachable assembled base (1) as a whole through the latch lock (3), and level the bottom of the detachable assembled base (1) and place it on the center of the pile by observing the horizontal automatic leveling bubble (4). Pull two diagonal lines at the bottom of the detachable assembled base (1) to find out the centroid of the assembled detachable assembled base (1) and align it with the center of the pile; P2. The pin tie rod support part (2) is pushed inward and clamped, and the steel pile tip (5) is placed on the pin tie rod support channel steel (22). The protruding part of the steel pile tip (5) passes through the gap between the two pieces of the pin tie rod support channel steel (22) to limit the displacement of the steel pile tip (5), and then the pile driver is in place; P3. Put one end of the prestressed concrete pile into the pile cap of the pile driver and slowly lift it up, and slowly place the other end in the device until the end plate of the prestressed concrete pile fits the end plate of the steel pile tip (5). Use two-sided symmetrical welding to weld the end plate of the pile and the end plate of the steel pile tip (5). After the cooling time reaches the specified requirements, proceed to the next step of construction; P4. After cooling, the prestressed concrete pile is slightly lifted to leave space for the pin tie rod support portion (2) to move, the pin tie rod support channel steel (22) is pulled outward, and the prestressed concrete pile is slowly dropped along the inner side of the device and statically inserted into the soil; P5. Use the upper and lower parts of the device to adjust the verticality, complete the welding, positioning and verticality check of the steel pile tip (5), disassemble the device to separate the left and right parts, recycle it, and use it for the next pile.

6. A prestressed concrete pipe pile construction method according to claim 5, characterized in that: When the steel pile tip (5) is welded, the pin tie rod supporting channel steels (22) on the left and right sides of the pin tie rod supporting portion (2) support the flat plate of the steel pile tip (5), and below the flat plate of the steel pile tip (5) is a cross protruding steel, one side of the cross protruding steel is perpendicular to the pin tie rod supporting steel channel (22), and the other side is parallel to the pin tie rod supporting steel channel (22), and the cross protruding steel passes through the gap between the two pin tie rod supporting channel steels (22).

Images