JP6042172B2 - Pile holding relay device and pile construction method - Google Patents

Description

  The present invention is to hold the tubular pile when the tubular pile such as the steel pipe pile or the steel pipe sheet pile is erected and built, and when the tubular pile is driven or pulled out, The present invention relates to a pile holding relay device used for holding a tubular pile interposed therebetween. Furthermore, it is related with the pile construction method using this pile holding | maintenance relay apparatus.

  Prefabrication is progressing in the manufacture of steel pipe piles. The surface treatment of piles was previously performed at the site, but in recent years, the piles are transported to the site after being performed in advance in the factory, and construction has been started. As the surface treatment of piles, there are anticorrosion, heavy anticorrosion, coating and painting for makeup, and the like. When driving piles, pile driving machines such as vibro hammers and hammers are used. In this specification, it is called a “pile driver”, but in the case of a vibro hammer, it is also used for pulling out a pile.

FIG. 11 is a diagram showing an example of a conventional pile driving construction using a vibro hammer.
When driving the pile 70 with the vibratory hammer 80, it is necessary to grip the head of the pile 70 with the pile gripping device 82 provided at the lower part of the vibratory hammer. In FIG. 11A, the vibratory hammer 80 is lifted by the left crane, and the pile 70 is erected by the right crane. A suspension ring 71 is welded to the head of the pile 70. The driving location G of the pile 70 has already been dug. After the pile 70 is lifted up and moved to the driving position, the head of the pile 70 is gripped by the pile gripping device 82 of the vibrator hammer 80, and the vibrator hammer 80 and the entire pile 70 are moved. Lift up with the crane on the left and build it up. Then, as shown in FIG.11 (c), the vibro hammer 80 is operated and the pile 70 is driven.

  FIG. 12A is a side view (partly cross-sectional view) schematically showing an enlarged view of the gripping portion of the vibratory hammer 80 and the pile 70 shown in FIG. FIG. 12B is a side view of the vicinity of the upper end of the pile 70. As shown in FIG. 12 (a), the pile gripping device 82 of the vibrator hammer 80 generally inserts the pipe wall of the pile 70 between a fixed claw and a movable claw (not shown), and hydraulically drives the movable claw. By doing so, the pipe wall of the pile is sandwiched between these claws. A surface treatment 72 is applied to the outer surface of the pile 70 shown in cross section. In the illustrated example, a heavy anticorrosion coating 72a is applied to the upper end portion of the pile 70, and a normal anticorrosion coating 72b is applied to the lower portion thereof. If the part which gave such surface treatment 72 is hold | gripped with the pile holding | gripping apparatus 82, the surface treatment 72 will be damaged and an anticorrosion function will be impaired. Therefore, conventionally, as shown in the side view of the pile in FIG. 12B, an extra length L0 is provided for gripping in addition to the originally required pile length. The hanging ring 71 for erection is also welded to this part. After the pile driving is completed, the extra length L0 is cut.

  In the case of a hammer, a hammer cap is placed on the head of the pile, but the hammer cap is an inner guide type so that the hammer cap does not damage the surface treatment of the pile.

Japanese Patent Laid-Open No. 06-240673

  As described above, conventionally, an extra length is provided in the pile so that the pile is not directly gripped or brought into contact with the surface-treated portion of the pile, and the portion is cut after construction. To be done. However, this increases the number of work steps and the work period, and at the same time, wastes material. There is also concern about quality degradation due to on-site work.

  In Patent Document 1, in the chuck mechanism of a vibratory hammer, in addition to the usual fixed claw and movable claw having irregularities, a fixed claw and movable claw for an anti-corrosion pile that are formed smoothly so as not to damage the heavy anti-corrosion coated surface ing. However, the technique disclosed in Patent Document 1 requires a vibratory hammer having a special chuck mechanism, and an existing vibratory hammer or striking hammer cannot be used as it is. It is also costly to finish the fixed claw and the movable claw so that they are smooth so as not to damage the coated surface.

  In view of the above situation, the present invention eliminates the need to provide a suspension ring on the tubular pile in order to erect, lay, drive, and pull out the tubular pile. It is an object of the present invention to provide a pile holding relay device that does not require a long length and that allows existing vibro hammers and striking hammers to be used as they are.

In order to achieve the above object, the present invention provides the following configuration. The numbers in parentheses are reference numerals of the drawings described later, and are attached for reference .

A first aspect of the present invention is a pile holding relay device (1A, 1C, 1D, 1E) for holding a tubular pile (70) whose surface treatment (72) is applied to the outer surface near the upper end , Between the ceiling plate (2b) and the outer surface of the tubular pile (70) suspended from the lower surface of the ceiling plate (2b) with the axis (C) perpendicular to the ceiling plate (2b) as the central axis A cylindrical side wall (2a) provided with a predetermined gap between the cylindrical side wall (2a) and an inner side of the cylindrical side wall (2a) around the axis (C) and generating a radially outward pressing force. A possible in-pipe pressing means (2c), and a chucking member (3) that is joined to the upper surface of the ceiling plate (2b) and can be gripped by a pile gripping device (82) of a vibratory hammer (80), In a state where the upper end of the tubular pile (70) is in contact with the lower surface of the ceiling plate (2b) The together tube pressing means (2c) to hold the pile (70) before Symbol tubular Ri by to load the pressing force radially outward with respect to a plurality of locations of the inner surface of the tubular pile (70), wherein The outer surface of the tubular pile (70) is not retained in at least the range where the surface treatment (72) is applied .

Another aspect of the present invention is a pile holding relay device (1A, 1C, 1D, 1E) for holding the tubular pile (70), and the ceiling plate (2b) and the ceiling plate (2b) A cylindrical side wall (2a) suspended from the lower surface of the ceiling plate (2b) with a vertical axis (C) as a central axis, and around the axis (C) inside the cylindrical side wall (2a) In-pipe pressing means (2c) arranged and capable of generating a pressing force radially outward, and joined to the upper surface of the ceiling plate (2b), can be gripped by a pile gripping device (82) of a vibrator hammer (80) Tube outer pressing means (2d) comprising a flexible chucking member (3) and a flexible pressing surface arranged on the circumference of the inner surface of the cylindrical side wall (2a) and capable of generating a radially inward pressing force If, Bei give a, abutting the upper end of the tubular pile (70) on the lower surface of the ceiling board (2b) At allowed state, the conjunction tube pressing means (2c) is loaded with pressure in the radially outward with respect to a plurality of locations of the inner surface of the tubular pile (70), the pipe outer pressing means (2d) wherein The tubular pile (70) is held by applying a radially inward pressing force to the outer surface of the tubular pile (70).
Moreover, the said external pressure means (2d) may be located away from the lower surface of the said ceiling board (2b) only predetermined distance (L1).
In addition, the tube outer pressing means (2d) may be an inflatable / shrinkable bag member attached on the inner surface of the cylindrical side wall (2a).

In the first aspect or another aspect , the in-pipe pressing means (2c) includes at least two movable members (2c4, 2c4) disposed at equiangular intervals around the axis (C), The movable member (2c4, 2c4) may be capable of reciprocating in the radial direction.
Moreover, you may provide the means (2g, 2j) which can change the attachment position with respect to the said ceiling board (2b) of the said in-pipe pressing means (2c) in radial direction.

The 2nd aspect of this invention hold | maintains the tubular pile (70) mounted horizontally by the pile holding relay apparatus (1A, 1B, 1C, 1D, 1E) in any one of the above, The said pile holding | maintenance The pile construction method is characterized in that the tubular pile (70) is erected and built using a relay device (1A, 1B, 1C, 1D, 1E).

In the second aspect, after the tubular pile (70) is erected and built, the pile holding relay device (1B, 1C) may be removed from the tubular pile (70).
Moreover, after removing the said pile holding | maintenance relay apparatus (1B, 1C) from the said tubular pile (70), the said pile pile (70) is hold | gripped and driven by the pile holding apparatus (82) of a vibratory hammer (80). Also good.

Still another aspect of the present invention is to hold the horizontally mounted tubular pile (70) by the pile holding relay device (1A, 1D, 1E), and the pile holding relay device (1A, 1D, 1E), after the tubular pile (70) is erected and built, the chuck holding device (1A, 1D, 1E) is chucked by the pile gripping device (82) of the vibratory hammer (80). It is a pile construction method characterized by holding and driving a member (3).

Still another aspect of the present invention is to hold the tubular pile (70) by the above-mentioned pile holding relay device (1A, 1D, 1E), and the pile holding relay device (82) by the pile gripping device (82) of the vibrator hammer (80). 1A, 1D, 1E) is a pile construction method characterized in that the chucking member (3) is gripped and driven or pulled out.

Still another aspect of the present invention is to hold the tubular pile (70) by the above-mentioned pile holding relay device (1A, 1B, 1C, 1D, 1E), and attach the cushion (3) of the hammer (85) to the ceiling plate. (2b) It is a pile construction method characterized by placing and driving on.

  The pile holding relay device according to the present invention can generate and hold a tensile force on the tubular pile when the in-pipe pressing means exerts a radially outward pressing force on a plurality of locations on the inner surface of the tubular pile. The tubular pile can be held without damaging the surface treatment of the outer surface of the tubular pile. For erection and erection, it is only necessary to provide a suspension ring on the pile holding relay device, so that it is not necessary to provide a suspension ring on the tubular pile itself.

  Furthermore, the pipe outside pressing means of the pile holding and relaying device stably suppresses deformation and displacement of the tubular pile by supporting the tubular pile by exerting a pressing force radially inward on the outer surface of the tubular pile. It becomes possible to support. Moreover, an outer surface press means does not damage the surface treatment of an outer surface by pressing the outer surface of a tubular pile with a flexible pressing surface.

  When driving or pulling out with a vibratory hammer, driving or pulling out can be performed by holding the pile holding relay device with a pile holding device of the vibratory hammer. When driving with a hammer, the cushion can be placed on the pile holding relay device so that the hammer can be driven. By applying the vibration force of the existing vibratory hammer or the hammering force of the existing hammering hammer to the pile holding relay device, the vibration force or the hammering force is transmitted to the tubular pile via the pile holding relay device. Pile can be driven (and pulled out in the case of a vibro hammer).

  By using the pile holding relay device, it is not necessary to secure an extra length in the tubular pile as in the prior art for protecting the surface treatment, so that a cutting process after construction is not necessary.

  In addition, since the external pressing means is located a predetermined distance away from the lower surface of the ceiling plate, the external pressing means does not touch the vicinity of the upper end of the tubular pile. Therefore, there is no possibility of damaging the surface treatment applied to the vicinity of the upper end of the tubular pile. This configuration is useful because a heavy anticorrosion coating is often provided in the vicinity of the upper end.

  When the pile driving machine is a vibratory hammer, an existing vibratory hammer can be used as it is by joining a chucking member that can be gripped by a pile gripping device of the vibratory hammer to the upper surface of the ceiling board.

  As a result, the work period is shortened and quality deterioration due to on-site work can be avoided. In addition, there is no waste of materials. These points are particularly useful when applied to large-diameter steel pipes (including steel pipe piles and steel pipe sheet piles) that are structures.

FIG. 1: is the schematic side view (partial cross section) which showed the pile holding | maintenance relay apparatus of 1st Embodiment by this invention with the tubular pile and the vibro hammer. FIG. 2 is a schematic enlarged longitudinal sectional view of the pile holding relay device for the vibro hammer shown in FIG. 3A is a view taken along the arrow X in FIG. 2, and FIG. 3B is a view taken along the arrow Y in FIG. FIG. 4 is a diagram schematically showing an arrangement example in the case where a plurality of in-pipe pressing means are provided in the axial direction. FIG. 5 is a schematic cross-sectional view showing a method of attaching the pile holding relay device according to the present invention to a tubular pile. FIG. 6 is a side step view schematically showing a construction form in which the pile holding relay device of the first embodiment is applied to a hammer. FIG. 7 is a schematic side view showing a pile holding and relaying apparatus according to a second embodiment of the present invention. FIG. 8 is a schematic side view illustrating a pile holding and relay device according to a third embodiment of the present invention. FIG. 9A is a schematic side step view showing a pile holding / relaying device 1D of the fourth embodiment according to the present invention, and FIG. 9B is a Z arrow view of FIG. FIG. 10 is a schematic side view showing a pile holding and relay device of a fifth embodiment according to the present invention. FIG. 11 is a diagram showing an example of a conventional pile driving construction using a vibro hammer. FIG. 12A is an enlarged view schematically showing the vibro hammer and the holding portion of the pile shown in FIG. 11, and FIG. 12B is a side view of the pile.

  Embodiments of the present invention will be described below with reference to the drawings showing an example of each embodiment of the present invention. In addition, the common component in different embodiment is shown with the same code | symbol in drawing.

  FIG. 1 is a schematic side view (partially cross-sectional view) illustrating a pile holding relay device 1A according to a first embodiment of the present invention together with a tubular pile 70 and a vibro hammer 80. That is, it is the figure which showed the state at the time of construction of driving or drawing using a vibro hammer as a pile driver. In addition, about the "upper" or "lower" in the following description or term of this apparatus, the case where the tubular pile 70 of the holding | maintenance object of this apparatus is standing upright is assumed.

  The vibratory hammer 80 includes a vibration generator 81 that generates a vibration force and a pile gripping device 82 provided below the vibration generator 81. The vibratory hammer 80 and the pile gripping device 82 are general ones.

  The pile holding relay device 1A is arranged so as to be interposed between the vibro hammer 80 and a tubular pile 70 such as a steel pipe pile or a steel pipe sheet pile. The pile holding relay device 1 </ b> A includes a pile holding main body 2 </ b> A and a chucking member 3.

  The pile holding body 2 </ b> A is directly attached to the upper end of the tubular pile 70. The chucking member 3 is joined to the upper surface of the ceiling board 2b of the pile holding body 2A. The pile gripping device 82 of the vibratory hammer 80 grips the chucking member 3. The chucking member 3 has a tubular shape here, but is formed in a shape that can be gripped by the pile gripping device 82. For example, when the fixed claws / movable claws of the pile gripping device 82 are arranged to grip the hat steel sheet pile, the chucking member 3 also has a hat steel sheet pile shape, and its lower end is joined to the upper surface of the ceiling plate 2b. .

  The tubular pile 70 has a surface treatment 72 applied to its outer surface. The surface treatment 72 extends to the upper end of the tubular pile 70. That is, no extra length in the pile length as shown in FIG. 12B of the conventional example is provided. Examples of the surface treatment 72 include anticorrosion coating, heavy anticorrosion coating, and cosmetic coating. These surface treatments 72 are damaged if directly gripped by the pile gripping device 82 of the vibratory hammer 80.

  The pile holding body 2A includes a ceiling plate 2b and a cylindrical side wall 2a suspended from the lower surface of the ceiling plate 2b. The tubular pile 70 is inserted from the lower end opening of the cylindrical side wall 2a. The upper end of the tubular pile 70 is inserted until it contacts the lower surface of the ceiling board 2b. Thereby, the vibration force from the vibratory hammer 80 is efficiently transmitted to the tubular pile 70 via the chucking member 3 and the ceiling plate 2b. The contact between the upper end of the tubular pile 70 and the lower surface of the ceiling plate 2b also increases the fixing strength of the tubular pile 70 and the pile holding body 2A.

  An in-pipe pressing means 2c is provided in the inner space surrounded by the cylindrical side wall 2a. In the illustrated example, three stages of in-pipe pressing means 2c are provided in the axial direction. The in-pipe pressing means 2c is provided at least in one stage. Although details will be described later with reference to FIG. 2, the in-pipe pressing means 2c can generate a pressing force radially outward. The in-pipe pressing means 2 c exerts a tensile force on the inner surface of the tubular pile 70 by applying a radially outward pressing force to a plurality of locations on the circumference of the inner surface of the tubular pile 70. Therefore, circumferential tension is generated in the tubular pile 70. The in-pipe pressing means 2c and the tubular pile 70 are fixed to each other by the resulting frictional force. This state is a state in which the tubular pile 70 is held by the pile holding relay device 1A. This frictional force must be large enough to withstand the mass of the tubular pile 70 when lifted and the impact when driven. Moreover, it must be large enough to withstand the force with which the tubular pile 70 is pulled out. The fact that the upper end of the tubular pile 70 is in contact with the lower surface of the ceiling plate 2b contributes to securing this frictional force.

  Further, an outside tube pressing means 2d is provided inside the cylindrical side wall 2a on the circumference of the inner surface of the cylindrical side wall 2a. The external tube pressing means 2d can generate a pressing force radially inward and has a flexible pressing surface. A suitable example of the extra-tube pressing means 2d is an airbag that can be inflated and deflated. The tube outer pressing means 2d holds the tubular pile 70 by applying a radially inward pressing force to the outer surface of the tubular pile 70. The outer tube pressing means 2d has a function of suppressing deformation and displacement of the tubular pile 70 due to imbalance of the pressing force by the inner tube pressing means 2c.

  On the outer surface of the cylindrical side wall 2a, a plurality of suspension rings 2e are provided at appropriate positions. The suspension ring 2e is used for attaching a crane wire when the tubular pile 70 is erected, lifted and built. A plurality of suspension rings 3a appropriately provided on the outer surface of the chucking member 3 can also be used together with the suspension ring 2e for the same purpose.

  FIG. 2 is a schematic enlarged longitudinal sectional view of the pile holding relay device 1A for the vibratory hammer shown in FIG. 1, and shows the pile holding body 2A and the chucking member 3. 3A is a view as viewed from the arrow X in FIG. 2, and FIG. 3B is a view as viewed from the arrow Y in FIG. The tubular pile 70 is indicated by a thin dotted line.

  The cylindrical side wall 2a has an axis C perpendicular to the ceiling plate 2b as the central axis of the cylinder. In the illustrated example, the in-pipe pressing means 2c in one stage includes two movable members 2c4 and 2c4 disposed at opposite positions of 180 ° around the axis C of the cylindrical side wall 2a. Each movable member 2c4 includes a radially outward pressing surface. The back surface side of the pressing surface is fixed to the front surface of a cylindrical hydraulic cylinder 2c1 installed in the radial direction. A piston 2c2 and an oil chamber 2c3 are provided in the hydraulic cylinder 2c1. The base end of the rod extending from the piston 2c2 toward the axis C is fixed to the piston support column 2c5 outside the hydraulic cylinder 2c1. The piston support column 2c5 is fixed so as to be integrated with the ceiling plate 2b of the pile holding body 2A.

  A hydraulic control mechanism (not shown) supplies or discharges hydraulic oil to or from the oil chamber 2c3, whereby the piston 2c2 and the hydraulic cylinder 2c1 move relatively in the radial direction. Here, since the base of the piston 2c2 is fixed to the housing, the hydraulic cylinder 2c1 reciprocates in the radial direction by hydraulic control. As a result, the movable member 2c4 can exert a pressing force on the inner surface of the tubular pile 70. In FIG. 2, for the sake of explanation, the first stage movable member 2c4 is in the retracted position (position not pressing the tubular pile), and the third stage movable member 2c4 is in the forward position (pressing the tubular pile). It is shown to be in the position. Actually, all the movable members 2c4 move forward and backward in conjunction with each other.

  The pair of movable members 2c4 in the second stage is disposed at a position rotated by 90 ° with respect to the pair of movable members 2c4 in the uppermost first stage, and the pair of movable members 2c4 in the third stage is It is arranged in the same direction as the first stage.

  In the illustrated example, two movable members 2c4 are provided in one stage, but this is the case of the minimum number. Generally, two or more movable members arranged radially outward at equal angular intervals around the axis C are provided. For example, three are arranged at intervals of 120 °, or four are arranged at intervals of 90 °. It is desirable to increase the number of movable members as the tubular pile has a larger diameter.

  Appropriate irregularities are formed on the pressing surface of the movable member 2c4 as a slip stopper for obtaining a sufficient frictional force. Since the inner surface of the tubular pile 70 is not subjected to surface treatment, there is no problem even if the pressing surface of the movable member 2c4 is bitten. In the illustrated example, the pressing surface is curved so as to be along the inner surface of the tubular pile 7 as shown in FIG. 3B, but it may be a flat surface as long as sufficient frictional force can be obtained.

  As shown in FIG. 2, a guide portion 2f is formed under the lowermost in-pipe pressing means 2c. The guide portion 2f has a shape that narrows downward. For example, the shape of a substantially pyramid or a substantially cone is preferable. The guide portion 2f plays a role of guiding so that the pile holding main body 2A can be smoothly inserted into each other when the pile holding main body 2A is attached to the tubular pile 70.

  Further, an air bag which is an external tube pressing means 2d is attached on the circumference of the inner surface of the cylindrical side wall 2a. In the illustrated example, one annular airbag 2d is provided so as to cover the entire circumference. As another example, airbags divided into a plurality may be disposed evenly in the circumferential direction. The airbag 2d can be expanded and contracted by an air control mechanism (not shown) that supplies or discharges compressed air. 2 and 3 (b) show the inflated state, and the surface of the airbag 2d presses the outer surface of the tubular pile 70 radially inward.

  Since the surface of the airbag 2d is flexible, the surface treatment 72 of the tubular pile 70 is not damaged. More preferably, as shown in FIG. 2, the upper end position of the airbag 2d is located a predetermined distance L1 away from the lower surface of the ceiling board 2b. This is effective when the surface treatment 72 of the tubular pile 70 has a heavy anticorrosion coating in the vicinity of the upper end. The heavy anticorrosion coating is a thick film lining of a synthetic resin such as polyethylene or urethane elastomer, and is often used in harsh marine environments. The distance L <b> 1 is longer than the region of the heavy anticorrosion coating near the upper end of the tubular pile 70. Thereby, since there is nothing in direct contact with respect to heavy anti-corrosion coating, it can protect more completely.

  As the extra-tube pressing means 2d, in addition to the airbag, other fluid such as oil or water may be filled in a flexible bag member and inflated. Examples of the material of the bag member include a woven or non-woven fabric made of polyester, vinylon, aramid fiber, carbon fiber, glass fiber or the like, or an elastic film made of a synthetic resin elastomer. However, any material can be used as long as necessary airtightness, liquidproofing or waterproofing, flexibility and strength can be ensured.

  FIG. 4 is a diagram schematically showing an arrangement example in the case where a plurality of in-pipe pressing means 2c are provided in the axial direction. In the example of FIG. 4A, adjacent steps are provided at positions shifted by 90 ° from each other. In the example of FIG. 4B, adjacent steps are provided at positions that are offset from each other by 60 °. As described above, when a plurality of stages are provided in the axial direction, the direction of the movable member 2c4 is determined so as to press the tubular pile 70 evenly around the axis as a whole. The number of stages in a plurality of cases is, for example, 2 to 5 stages, but is appropriately set according to the size and weight of the tubular pile 70. Further, when a sufficient holding force can be secured, one step may be used. A small number of steps is preferable in terms of light weight.

  FIG. 5 is a schematic cross-sectional view showing a method of attaching the pile holding / relaying device 1 </ b> A to the tubular pile 70. In addition, this attachment method is applicable also to the pile holding | maintenance relay apparatus of another form mentioned later.

  In FIG. 5A, the tubular pile 70 is placed on a placing table 91 placed on a predetermined floor 90 with its axis substantially horizontal. The upper end portion of the tubular pile 70 protrudes from the edge of the mounting table 91 by a length that allows the pile holding body 2A to be attached. On the other hand, the pile holding relay device 1A is placed on the carriage 92 with its axis horizontal. In addition, it fixes with a wedge etc. suitably so that the pile holding main body 2A may not roll on the cart 92. The axis of the tubular pile 70 and the axis C of the pile holding body 2A are at the same height and are positioned on the extension line. At this time, the movable member 2c4 of the in-pipe pressing means is in the retracted position, and the airbag 2d of the out-pipe pressing means is in a contracted state.

  The guide part 2 f of the pile holding body 2 </ b> A is directed toward the tubular pile 70, and the carriage 92 is brought close to the tubular pile 70. At the same time that the guide portion 2f is inserted into the tubular pile 70, the tubular pile 70 is inserted into the cylindrical side wall 2a of the pile holding body 2A.

  As shown in FIG.5 (b), after inserting until the upper end of the tubular pile 70 contact | abuts on the ceiling board 2b of 2A of pile holding main bodies, the movable member 2c4 of an in-pipe press means is moved to an advance position, and the tubular pile 70 Press the inner surface. Furthermore, the air bag 2d of the tube outer pressing means is inflated to press the outer surface of the tubular pile 70. Thereby, the attachment to the tubular pile 70 of 2 A of pile holding bodies is completed.

  Although not shown in the figure, thereafter, similarly to the process of FIG. 11 described above, the rope is connected to the hanging ring of the pile holding body 2 and / or the chucking member 3, the tubular pile 70 is erected with a crane, lifted and moved, Build in the driving position. Next, the chucking member 3 is gripped by a pile gripping device of a vibratory hammer. Subsequently, the tubular pile 70 is driven by a vibro hammer.

  In addition, explanation is supplemented about the drawing construction of a pile. When pulling out an existing pile, it is natural that damage to the surface treatment of the pile does not matter. However, even when a new pile is driven, there is often a situation in which it is once pulled out and redone during the driving. In pulling out such a new pile, it is necessary to carry out the surface treatment without damaging it. The pile holding relay device of the present invention is also effective in such drawing work.

  FIG. 6 is a side step view schematically showing a construction form in which the pile holding relay device 1A of the first embodiment is applied to a hammer.

  In the example of FIG. 6, the cushion 88 of the hammering hammer 85 is placed on the upper surface of the ceiling plate 2b of the pile holding body 2A. In a preferred example, the cushion 88 can be installed at a fixed position by fitting the cushion 88 into the chucking member 3 as shown.

  The striking hammer 85 has a striking ram 86 disposed on a cushion 88 via an anvil 87, for example. In either case, the existing hammer 85 can be used as it is. In addition, when driving the tubular pile 70 with the hammering hammer 85, the pressing by the in-pipe pressing means 2c and the outside pressing means 2d is unnecessary. When using the hammering hammer 85, the pile holding relay device 1A is used when the tubular pile 70 is erected and built. Driving with the hammering hammer 85 can be performed with the pile holding relay device 1A attached.

  FIG. 7 is a schematic side view showing a pile holding relay device 1B of the second embodiment according to the present invention. The second embodiment is a simple type. The pile holding body 2B of the pile holding relay device 1B includes a ceiling plate 2b and an in-pipe pressing means 2c arranged around an axis C perpendicular to the ceiling plate 2b below the ceiling plate 2b. The in-pipe pressing means 2c can generate a pressing force radially outward as in the first embodiment described above, but in this example, only one stage is provided.

  The pile holding body 2B includes only the in-pipe pressing means 2c, and does not include the cylindrical side wall and the out-pipe pressing means in the first embodiment described above. The chucking member 3 is joined to the upper surface of the ceiling board 2b. Since the pile holding relay device 1B holds the tubular pile 70 only by the pressing force of the in-pipe pressing means 2c, the holding force is often insufficient to drive or pull out the pile. In addition, it is possible to secure a sufficient holding force for building. The pile holding relay device 1B is lightweight and easy to handle, and the structure is simple, so that the manufacturing cost can be reduced.

  When erection and erection are performed by the pile holding relay device 1B, it is performed using the hanging ring 3a of the chucking member 3 after being attached to the horizontally mounted tubular pile 70. After the erection, the pile holding relay device 1B is removed and replaced with, for example, the pile holding relay device of the first embodiment described above. Or, without removing the pile holding relay device 1B, driving is performed as in the example using the hammer shown in FIG.

  FIG. 8 is a schematic side view showing a pile holding / relaying device 1C according to a third embodiment of the present invention. The third embodiment is a simple type like the second embodiment. The pile holding body 2B of the pile holding relay device 1B includes a cylindrical side wall 2a suspended from the lower surface of the ceiling plate 2b with an axis C perpendicular to the ceiling plate 2b as a central axis, and a shaft inside the cylindrical side wall 2a. In-pipe pressing means 2c disposed around C. However, the pile holding relay device 1 </ b> C does not include the above-described outside-pushing means and chucking member of the first embodiment.

  When erection and erection are performed by the pile holding and relaying apparatus 1C, it is performed using the hanging ring 2e of the cylindrical side wall 2a after being attached to the tubular pile 70 placed horizontally. After erection, the pile holding relay device 1C is removed and, for example, replaced with the pile holding relay device of the first embodiment described above and driven. Or, without removing the pile holding relay device 1C, driving is performed as in the example using the hammer shown in FIG. 6 (a concave portion for defining the position of the cushion may be provided on the upper surface of the ceiling portion 2b. ).

  FIG. 9A is a schematic side step view showing a pile holding / relaying device 1D of the fourth embodiment according to the present invention, and FIG. 9B is a Z arrow view of FIG. The pile holding relay device 1D has the same basic form as the pile holding relay device 1A of the first embodiment described above (however, the in-pipe pressing means 2c is an example having only one stage). The pile holding relay device 1D can correspond to the tubular pile 70 having a different pile diameter with one device.

  In the pile holding relay device 1D, the piston support pillars 2c5 and 2c5 of the pair of in-pipe pressing means 2c and 2c arranged at 180 ° with respect to the axis C are divided into two on the vertical plane. A pair of divided piston supports 2c5 and 2c5 are respectively attached to the pair of suspension members 2h and 2h. The upper ends of the pair of suspension members 2h and 2h are fitted into rail members 2g attached to the lower surface of the ceiling plate 2b. The rail member 2g is installed so as to intersect the axis C (on the diameter of the cylindrical side wall 2a). Since the suspension member 2h can move in the radial direction along the rail member 2g, the in-pipe pressing means 2c can also move in the radial direction. Thereby, the position where the in-pipe pressing means 2c applies a pressing force to the inner surface of the tubular pile 70 can be changed in the radial direction.

  When adjusting the position of the in-pipe pressing means 2c, the suspension member 2h is moved along the rail member 2g according to the diameter of the tubular pile 70 to be held, and an appropriate position is determined. When the position is determined, the suspension member 2h is fixed to the ceiling plate 2b using an appropriate fixing tool 2i, for example. In that case, mounting holes for the fixtures 2i are drilled at predetermined intervals on the lower surface of the ceiling board 2b.

  FIG. 10 is a schematic side step view showing a pile holding and relaying apparatus 1E according to the fifth embodiment of the present invention. The pile holding relay device 1E has the same basic form as the pile holding relay device 1A of the first embodiment described above (however, the in-pipe pressing means 2c is an example having only one stage). The pile holding relay device 1E can correspond to the tubular pile 70 having a different pile diameter with a single device, similarly to the pile holding relay device 1D of the fourth embodiment.

  In the pile holding and relaying apparatus 1E, the piston support columns 2c5 and 2c5 of the pair of in-pipe pressing means 2c and 2c arranged at 180 ° positions with respect to the axis C are divided into two on the vertical plane. A pair of divided piston supports 2c5 and 2c5 are respectively attached to the pair of suspension members 2h and 2h. An insertion member 2j having a predetermined thickness is installed between the pair of suspension members 2h and 2h. The position of the in-pipe pressing means 2c in the radial direction is determined by the thickness of the insertion member 2j. The thickness of the insertion member 2j is selected according to the diameter of the tubular pile 70 to be held. If the insertion member 2j is installed, the insertion member 2j and the suspension members 2h and 2h are fixed to the ceiling board 2b using an appropriate fixture 2i.

  A pile construction method using the pile holding relay device according to the present invention will be described. In addition to the point using the pile holding | maintenance relay apparatus by this invention, FIG. 11 shown as a prior art example can be referred as an example of a pile construction method.

  11A, 11B, 1C, 1D, and 1E each hold the tubular pile 70 placed horizontally as shown in FIG. b) can be raised and built. It can be lifted between erection and erection and moved to a predetermined position.

  When the pile holding relay devices 1B and 1C having insufficient pile driving force are used, the pile holding relay devices 1B and 1C are removed from the tubular pile 70 after the tubular pile 70 is erected and built. To do. After removing the pile holding relay devices 1 </ b> B and 1 </ b> C from the tubular pile 70, when there is no problem such as surface treatment damage, the pile holding device 82 of the vibratory hammer 80 may be used to grip and drive the tubular pile 70. After removing the pile holding relay devices 1B, 1C from the tubular pile 70, if there is a problem such as surface treatment damage, the pile holding relay devices 1A, 1D, 1E are replaced with another pile holding relay device 1A, 1D, 1E. May be gripped by the pile gripping device 82 of the vibratory hammer 80 and driven or pulled out (in the case of redoing in the middle of driving).

  When the pile holding relay devices 1A, 1D, and 1E having the chucking member are used, the pile holding relay devices 1A and 1D are constructed by the pile holding device 82 of the vibrator hammer 80 after the tubular pile 70 is erected and built. The chucking member 3 of 1E can be grasped and driven or pulled out (when re-executed in the middle of driving).

  In addition, the tubular pile 70 that has been completed by arbitrary means is held by the pile holding relay devices 1A, 1D, and 1E, and the pile holding relay devices 1A, 1D, and 1E are chucked by the pile holding device 82 of the vibratory hammer 80. 3 can be driven and pulled out or pulled out (in the case of redoing in the middle of driving).

  Any of the above-described pile holding and relay apparatuses 1A, 1B, 1C, 1D, and 1E can hold the tubular pile 70 and place the cushion 3 of the hammering hammer 85 on the ceiling plate 2b for driving. .

1A, 1B, 1C, 1D, 1E Pile holding relay device 2A, 2B, 2C, 2D, 2E Pile holding body 2a Cylindrical side wall 2b Ceiling plate 2c In-pipe pressing means 2c1 Hydraulic cylinder 2c2 Piston 2c3 Oil chamber 2c4 Movable member 2c5 Piston support Pillar 2d Pipe outside pressing means 2e Suspension ring 2f Guide part 2g Rail member 2h Suspension member 2i Fixing tool 2j Inserting member 3 Chucking member 3a Suspension ring 70 Tubular pile 71 Suspension ring 72 Surface treatment 72a Heavy anticorrosion coating 72b Anticorrosion coating 80 Vibro hammer 81 Vibration Machine 82 Pile gripping device 85 Impact hammer 86 Impact ram 87 Anvil 88 Cushion 90 Floor 91 Mounting platform 92 Dolly C Central axis G Ground

Claims (12)

A pile holding relay device (1A, 1C, 1D, 1E) for holding a tubular pile (70) that has been subjected to surface treatment (72) on the outer surface near the upper end ,
A ceiling plate (2b);
It is suspended from the lower surface of the ceiling plate (2b) with an axis (C) perpendicular to the ceiling plate (2b) as a central axis, and has a predetermined gap with the outer surface of the tubular pile (70). A cylindrical side wall (2a) provided in
An in-pipe pressing means (2c) disposed around the axis (C) inside the cylindrical side wall (2a) and capable of generating a pressing force radially outward;
A chucking member (3) that is joined to the upper surface of the ceiling plate (2b) and can be gripped by a pile gripping device (82) of a vibratory hammer (80),
In a state where the upper end of the tubular pile (70) is in contact with the lower surface of the ceiling plate (2b), the in-pipe pressing means (2c) is radial with respect to a plurality of locations on the inner surface of the tubular pile (70). It holds the O Ri before Symbol tubular piles to load the pressing force of the outward (70),
The pile holding relay apparatus characterized by not holding at least the range where the surface treatment (72) is applied on the outer surface of the tubular pile (70) . A pile holding relay device (1A, 1C, 1D, 1E) for holding a tubular pile (70),
A ceiling plate (2b);
A cylindrical side wall (2a) suspended from the lower surface of the ceiling plate (2b) with an axis (C) perpendicular to the ceiling plate (2b) as a central axis;
An in-pipe pressing means (2c) disposed around the axis (C) inside the cylindrical side wall (2a) and capable of generating a pressing force radially outward;
A chucking member (3) that is joined to the upper surface of the ceiling plate (2b) and can be gripped by a pile gripping device (82) of a vibratory hammer (80);
E Bei a, a tube outer pressing means (2d) having a flexible pressing surface capable of generating a pressing force of the arranged and radially inward on the periphery of the inner surface of said cylindrical side wall (2a),
In a state where the upper end of the tubular pile (70) is in contact with the lower surface of the ceiling plate (2b), the in- pipe pressing means (2c) is radial with respect to a plurality of locations on the inner surface of the tubular pile (70). The tubular pile (70) is loaded by applying an outward pushing force and the tube pushing means (2d) applies a radially inward pushing force to the outer surface of the tubular pile (70). post holder repeater you wherein the holding.   The pile holding relay device according to claim 2, wherein the outside pipe pressing means (2d) is located a predetermined distance (L1) away from the lower surface of the ceiling board (2b).   The pile holding / relaying device according to claim 2 or 3, wherein the outer pipe pressing means (2d) is an inflatable / shrinkable bag member attached on the inner surface of the cylindrical side wall (2a).   The in-pipe pressing means (2c) includes at least two movable members (2c4, 2c4) arranged at equiangular intervals around the axis (C), and the movable members (2c4, 2c4) are in the radial direction. The pile holding relay device according to any one of claims 1 to 4, wherein the pile holding relay device is reciprocally movable.   The means (2g, 2j) which makes it possible to change the mounting position of the in-pipe pressing means (2c) with respect to the ceiling plate (2b) in the radial direction is provided. The described pile holding relay device.   The pile holding relay device (1A, 1B, 1C, 1D, 1E) according to any one of claims 1 to 6 is used to hold a horizontally placed tubular pile (70), and the pile holding relay device ( 1A, 1B, 1C, 1D, 1E), the pile construction method characterized in that the tubular pile (70) is erected and built.   Pile construction according to claim 7, wherein the pile holding relay device (1B, 1C) is removed from the tubular pile (70) after the tubular pile (70) has been erected and built. Method.   After the pile holding relay device (1B, 1C) is removed from the tubular pile (70), the tubular pile (70) is grasped and driven by a pile grasping device (82) of a vibratory hammer (80). The pile construction method according to claim 8.   The pile holding relay device (1A, 1D, 1E) according to any one of claims 1 to 6 holds a tubular pile (70) placed horizontally, and the pile holding relay device (1A, 1D, 1E), after the tubular pile (70) is erected and built, the chuck holding device (1A, 1D, 1E) is chucked by the pile gripping device (82) of the vibratory hammer (80). A pile construction method characterized in that the member (3) is held and driven.   The pile holding relay device (1A, 1D, 1E) according to any one of claims 1 to 6 holds the tubular pile (70), and the pile holding relay device (82) of the vibratory hammer (80) 1A, 1D, 1E) The chuck construction method, wherein the chucking member (3) is gripped and driven or pulled out.   A tubular pile (70) is held by the pile holding relay device (1A, 1B, 1C, 1D, 1E) according to any one of claims 1 to 6, and a cushion (3) of a hammer (85) is attached to the ceiling plate. (2b) A pile construction method characterized by placing on and driving.

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