JP5287803B2 - Diagonal pile joint jig, pile with jig, oblique pile joint method, and structure manufacturing method - Google Patents

Description

  The present invention uses an inclined pile joint jig used when longitudinally connecting an oblique pile penetrating into the ground in a posture inclined with respect to the vertical direction, a pile with a jig provided with the jig, and the jig. The present invention relates to a diagonal pile joining method and a structure manufacturing method using the oblique pile joining method.

  A pile made of a steel pipe or the like penetrating into the ground is sometimes used as a foundation member for civil engineering and construction. Among such piles, a pile that penetrates the ground in the vertical direction is called a straight pile, and a pile that penetrates the ground in a posture inclined with respect to the vertical direction is called a diagonal pile. The slant pile functions more effectively against the force applied in the horizontal direction than the straight pile, and it is possible to reduce the horizontal displacement of the pile head. Therefore, in the future, slant piles tend to be suitably used for seismic design.

  The depth that penetrates the pile as described above varies depending on the hardness of the ground, and the depth may reach several tens of meters. In such a case, it is difficult to produce a pile with a length of several tens of meters at the factory and transport it to the construction site. For this reason, usually, a plurality of short piles are produced, and longitudinal joining is performed while penetrating them into the ground. That is, first, one pile is penetrated into the ground, and when the pile is penetrated to some extent, the end of another pile is joined to the end of the pile so as to extend the length of the pile. After that, until the pile is penetrated to a predetermined depth (until the buried pile has a predetermined length), the longitudinal joining and penetration are repeated.

  When joining the edge parts of a pile as mentioned above, in the case of a slant pile, you have to join another pile to the pile which inclined and penetrated. In order to join other piles to the piles that are inclined and penetrated, both piles must be joined while the other piles are inclined according to the inclination of the piles that have already penetrated. About how to connect such a diagonal pile, for example, in Patent Document 1, it is a guide jig for alignment used for vertical connection of piles, and on the outer peripheral surface of one end of the vertical connection, It consists of at least one longitudinal member that protrudes longer than the pile end in the longitudinal direction of the pile, and an auxiliary member that narrows the clearance between the longitudinal member and the outer peripheral surface of the pile end portion is provided in the middle of the longitudinal member An alignment guide jig is disclosed. In Patent Document 2, a plurality of arc-shaped divided bodies are hinge-connected, a belt that forms a ring by the plurality of divided bodies, a fixing means that fixes ends of the divided bodies, There is disclosed a steel pipe support comprising a support portion extending on an extension side in the width direction of a belt attached to any one of them.

Japanese Patent No. 4402543 JP 2009-215751 A

  However, in the technique disclosed in Patent Document 1, when installing the vertical member on the outer peripheral surface of the pile, the pile is supported using a jig having a frame structure made of an angle member, and only the jig is attached. In addition, there is a problem that it takes time and labor to remove the jig after the completion of pile joining. Moreover, since attachment to the pile of a jig | tool is by bolt fixation, it is necessary to provide a bolt hole in a pile. Particularly in the case of steel pipe piles, if a hole is made, a cross-sectional defect occurs, which may cause a problem in strength.

  In addition, in the technique disclosed in Patent Document 2, since the belt is an annular shape that can be opened and closed, and is heavy, it takes time and labor to attach the jig. There is a risk of doing. Furthermore, since the belt is fixed to the steel pipe pile only by tightening the belt, not by bolt fixing or welding, there is a possibility that the pile located on the upper side may come off and fall when the pile hits the support portion.

  Therefore, in view of the above problems, the present invention can easily carry out a longitudinal pile connection without causing a cross-sectional defect in the pile, and can improve the safety in operation, and the jig for the oblique pile connection, It is an object of the present invention to provide a pile with a jig provided, a slant pile joining method using the jig, and a method for manufacturing a structure using the slant pile joint method.

  The present invention will be described below.

  1st this invention is the jig | tool for the diagonal pile connection used for the vertical connection of the pile of the attitude | position inclined with respect to the perpendicular direction at predetermined angles, Comprising: It fixes to the outer peripheral surface of one pile among the piles to be connected vertically When the fixed part and the fixed part are fixed to the outer peripheral surface of one pile and the ends of the piles to be cascaded are butted together, the other of the piles to be cascaded from the fixed part is extended to the side where the other pile is provided. The above-mentioned problem is solved by a diagonal pile joining jig provided with a support portion that is in contact with one surface of a hanging metal fitting provided on the outer peripheral surface of the other pile.

  Here, “when the ends of the piles to be cascaded are brought together” means that the ends of the piles to be cascaded are brought close to each other (including cases where they are brought into contact with each other). The “predetermined angle with respect to the vertical direction” is not particularly limited, but is usually an angle of about 15 degrees or less with respect to the vertical direction. If the angle is small, the displacement suppression effect on the force applied in the horizontal direction tends to be small, and if the angle is too large, it becomes difficult to penetrate the pile into the ground. Furthermore, the “hanging metal fitting” means a metal fitting for hanging the pile by hanging a wire, a hook or the like, which is usually provided in a pile used mainly as a foundation member for civil engineering and construction.

  When the fixed part is fixed to the outer peripheral surface of one pile and the ends of the piles to be cascaded are brought into contact with each other, the jig for oblique pile joining according to the first aspect of the present invention can It is preferable to have a gap between the outer peripheral surface. In addition, a "joining part" means the part where the piles which longitudinally connect are joined. By setting it as this form, it becomes easy to weld the piles to longitudinally connect so that it may explain in full detail later.

  The oblique pile joint jig of the first aspect of the present invention is located below the pile to be longitudinally joined when the fixed portion is secured to the outer peripheral surface of one pile and the ends of the piles to be longitudinally joined are butted together. It is preferable to have a gap between the outer peripheral surface near the upper end of the pile. By adopting such a configuration, as will be described in detail later, a copper band used as a sag stopper for the weld metal when welding is wound around the outer peripheral surface near the upper end of the pile located below among the piles to be cascaded. Can do.

  The oblique pile joining jig according to the first aspect of the present invention is formed of a plate-like body, and the gap is preferably formed by cutting out the plate-like body. By setting it as this form, the said gap | interval can be formed easily.

  It is also preferable that the oblique pile joining jig of the first aspect of the present invention is composed of a rod-shaped body, and the gap is formed by bending the rod-shaped body. By adopting such a configuration, it is possible to produce the oblique pile joining jig at low cost and to easily form the gap.

  2nd this invention solves the said subject by the pile with a jig | tool provided with the jig | tool for the slant pile joint of said 1st this invention in the outer peripheral surface of an edge part vicinity.

  The third aspect of the present invention is a diagonal pile joining method for longitudinally connecting a pile in a posture inclined at a predetermined angle with respect to a vertical direction, wherein the first of the first piles is connected to the outer peripheral surface of one of the piles to be longitudinally connected. The fixing step of attaching the fixing portion of the oblique pile joint jig of the present invention, and the supporting portion of the oblique pile joint jig is brought into contact with the suspension fitting provided on the outer peripheral surface of the other pile among the longitudinally connected piles The above-mentioned problem is solved by a diagonal pile joining method including a guiding step of guiding a pile located above among piles to be vertically joined to a predetermined position.

  Here, the “predetermined position” is a position where the piles are arranged in order to join the piles to be cascaded together, the ends of the piles to be cascaded are abutted, and the axial directions of both piles match. This is the position where the outer peripheral surfaces of both piles are substantially flush.

  In the diagonal pile joint method of the third aspect of the present invention, in the fixing step, the fixed portion of the oblique pile joint jig of the first aspect of the present invention is attached to the outer peripheral surface of the pile positioned above among the piles to be longitudinally connected. In the longitudinally connected piles, the pile located below has a pair of suspension brackets and the pair of suspension brackets face each other, and the pair of suspension brackets is inclined downward (inclined) It is preferable to perform the guiding step after the pile located below is stationary so as to be aligned in a substantially vertical direction with respect to a vertical plane including the axial direction of the pile). By setting it as this form, the diagonal pile splicing method of the 3rd this invention can be easily performed using the pile provided with the normally used suspension metal fitting.

  4th this invention solves the said subject by the manufacturing method of a structure including the process of burying a diagonal pile from the diagonal pile joint method of said 3rd invention.

  According to the present invention, it is possible to easily carry out a longitudinal pile connection without causing a cross-sectional defect in the pile, and to improve the operational safety, a jig for oblique pile connection, and a jig provided with the jig. It is possible to provide a pile with a pile, a diagonal pile joint method using the jig, and a structure manufacturing method using the diagonal pile joint method.

It is a figure which shows roughly the steel pipe pile which attached the jig | tool for the diagonal pile connection of this invention concerning one embodiment, and the steel pipe pile which longitudinally connects this steel pipe pile. It is a figure which shows roughly the attitude | position which faced | matched the edge parts of the steel pipe pile shown in FIG. It is the schematic which looked at the steel pipe pile shown in FIG. 2 and the jig | tool for a diagonal pile joint from the paper surface left direction of FIG. (A) is a figure which shows roughly the aa cross section shown in FIG. 1, (b) is a figure which shows the bb cross section shown in FIG. 1 schematically, (c) is FIG. It is a figure which shows cc cross section shown in FIG. It is a figure which shows roughly the steel pipe pile which attached the jig | tool for the diagonal pile connection of this invention concerning other embodiment, and the steel pipe pile which longitudinally connects this steel pipe pile. It is a figure which shows roughly the steel pipe pile which attached the jig | tool for the diagonal pile connection of this invention concerning other embodiment, and the steel pipe pile longitudinally connected to this steel pipe pile. It is a figure explaining the slant pile splicing method of the present invention concerning one embodiment.

  The above-described operation and gain of the present invention will be clarified from embodiments for carrying out the invention described below. Hereinafter, the present invention will be described based on embodiments shown in the drawings. However, the present invention is not limited to these embodiments.

1. Slant pile joint metal fitting The slant pile joint metal fitting of the present invention is used for longitudinal joining of piles in a posture inclined at a predetermined angle with respect to the vertical direction. Moreover, the diagonal pile joint metal fitting of this invention is the pile which carries out a longitudinal connection by fixing the fixing | fixed part to the outer peripheral surface of this one pile, and the fixing | fixed part fixed to the outer peripheral surface of one pile among the piles connected longitudinally. When the ends of the piles are butted together, the piles that are cascaded from the fixed portion extend to the side where the other pile is provided, and abut against one surface of the suspension fitting provided on the outer peripheral surface of the other pile. And a support part.

  FIG. 1 is a diagram (front view) schematically showing a steel pipe pile 20 to which a slant pile joining jig 10 of the present invention according to one embodiment is attached and a steel pipe pile 30 longitudinally connecting the steel pipe pile 20. It is. FIG. 2 is a diagram (front view) schematically showing a posture in which the lower end 23 of the steel pipe pile 20 and the upper end 33 of the steel pipe pile 30 shown in FIG. FIG. 3 is a schematic view (side view) of the steel pipe pile 20 and the steel pipe pile 30 and the oblique pile joint jig 10 shown in FIG. 2 as viewed from the left side in FIG. 4A is a diagram schematically showing the aa cross section shown in FIG. 1, and FIG. 4B is a diagram schematically showing the bb cross section shown in FIG. (C) is a figure which shows schematically the cc cross section shown in FIG. In addition, the dashed-dotted line of FIG. 4 has shown the centerline.

  In this embodiment, the steel pipe pile 20 and the steel pipe pile 30 are used as the piles to be longitudinally connected, and the steel pipe pile 30 positioned below among them is penetrated into the ground 50 with a predetermined angle with respect to the vertical direction. ing. On the other hand, the steel pipe pile 20 located above is inclined according to the inclination of the steel pipe pile 30 and the lower end 23 is joined to the upper end 33 of the steel pipe pile 30 as described later.

  The steel pipe pile 30 includes suspension brackets 31, 31 on the outer peripheral surface near the upper end 33. The steel pipe pile 20 is also provided with the hanging fittings 21 and 21 similar to the hanging fittings 31 and 31 of the steel pipe pile 30 (see FIG. 7, but only one hanging fitting 21 is shown in FIG. 7). Since the hanging fitting 31 and the hanging fitting 21 are the same, only the hanging fitting 31 will be described below. The hanging metal fitting 31 is a member provided to pass a hook or wire when the steel pipe pile 30 is lifted by a crane or the like. The suspension fitting 31 is a plate-like member having a predetermined size, and has a suspension fitting through hole 32 having a predetermined size at a predetermined position. In this embodiment, the hanging metal fittings 31 are installed one by one at two places, and the distances from the respective installation positions to the upper end 33 are equal and are in a positional relationship facing each other. The hanging metal fitting 31 is fixed by welding so as to be perpendicular to the outer peripheral surface of the steel pipe pile 30 and parallel to the longitudinal direction of the steel pipe pile 30. The hanging metal fitting 31 has sufficient mechanical strength and welding strength so that there is no problem even if the full weight of the steel pipe pile 30 acts.

Based on the above assumptions, the diagonal pile joint 10 will be described.
The oblique pile joint 10 is formed of a plate-like body and includes a fixed portion 11 and a support portion 12.

  The fixing part 11 is a part fixed to the outer peripheral surface of the steel pipe pile 20. As will be described later, after the lower end 23 of the steel pipe pile 20 and the upper end 33 of the steel pipe pile 30 are joined, the fixing portion 11 is removed from the outer peripheral surface of the steel pipe pile 20. Therefore, the fixing part 11 is strong enough not to unintentionally come off until the steel pipe pile 20 is guided to a predetermined position and the lower end 23 of the steel pipe pile 20 and the upper end 33 of the steel pipe pile 30 are joined. It is preferable to fix to the outer peripheral surface of the steel pipe pile 20 by a method that can be removed as easily as possible. As such a method, for example, welding is conceivable. In the case of welding, it is preferable to minimize the leg length such as staggered welding in consideration of later removal.

  The support part 12 fixes the fixing part 11 to the outer peripheral surface of the steel pipe pile 20 and extends from the fixing part 11 to the steel pipe pile 30 side when the lower end 23 of the steel pipe pile 20 and the upper end 33 of the steel pipe pile 30 are abutted. ing. Further, as will be described later, the support portion 12 can guide the steel pipe pile 20 to a predetermined position by bringing the lower face into contact with the upper face of the hanging metal fitting 31 provided on the outer peripheral surface of the steel pipe pile 30 ( (See FIG. 3). The “lower surface” of the support part and the hanging bracket means a surface on the ground side of the plate-like support part and the hanging bracket, and the “upper surface” of the support part and the hanging bracket means a plate-like support part. And the surface opposite to the lower surface of the hanging bracket.

  In addition, as shown in FIG. 2, when the diagonal pile joint 10 is fixed to the outer peripheral surface of the steel pipe pile 20 and the lower end 23 of the steel pipe pile 20 and the upper end 33 of the steel pipe pile 30 are abutted, There is a gap x between the outer peripheral surface in the vicinity of the joint 25. The gap x can be easily formed by providing the notch 13 in the plate-like body constituting the slant pile joint fitting 10. The benefits obtained by forming such a gap x are as follows.

  For example, in the technique disclosed in Patent Document 1, a vertical member is attached to the outer peripheral surface of a diagonal pile that has already penetrated into the ground, and another pile scheduled to be joined to the diagonal pile is attached to the vertical member. Is guiding. In the case of a mechanical joint, such a method does not cause a problem, but in the case of a welded joint, there is a problem that welding cannot be performed at a portion provided with a longitudinal member and a pile cannot be joined. Although it is conceivable to provide vertical members on the inner peripheral surface side of the steel pipe pile, in the case of welded joints, since a backing is usually installed on the inner peripheral surface side of the steel pipe pile, the vertical member is installed on the inner peripheral surface side of the steel pipe pile. It is difficult to provide the material. Further, the technique disclosed in Patent Document 2 also has a problem in that, in the same manner as the technique disclosed in Patent Document 1, welding cannot be performed at a place where a support portion is provided, and a pile cannot be joined.

  On the other hand, according to the diagonal pile joint 10, the lower end 23 of the steel pipe pile 20 and the upper end of the steel pipe pile 30 are provided by having a gap x between the steel pipe pile 20 and the outer peripheral surface in the vicinity of the joint 25 of the steel pipe pile 30. Welding with 33 can be performed easily. 2 and 3, the lower end 23 of the steel pipe pile 20 and the upper end 33 of the steel pipe pile 30 are shown to be in contact with each other at the joint 25, but the lower end 23 of the steel pipe pile 20 and the steel pipe pile 30 are shown. When the upper end 33 is welded, a predetermined gap is usually provided between the lower end 23 of the steel pipe pile 20 and the upper end 33 of the steel pipe pile 30.

  Further, as shown in FIG. 2 and FIG. 4 (c), the diagonal pile splice fitting 10 fixes the fixing portion 11 to the outer peripheral surface of the steel pipe pile 20, and the lower end 23 of the steel pipe pile 20 and the upper end 33 of the steel pipe pile 30. And a gap y between the outer peripheral surface near the upper end 33 of the steel pipe pile 30 located below. The gap y can be easily formed by providing the notch 14 in the plate-like body constituting the slant pile joint fitting 10. The benefits obtained by forming such a gap y are as follows.

  When joining the ends of the piles to be cascaded together by welding, a copper band is wound around the outer peripheral surface of the pile located below among the piles to be cascaded so that the weld metal does not sag. However, when a jig as disclosed in Patent Documents 1 and 2 is used, there is a problem that the copper band cannot be attached.

  On the other hand, according to the diagonal pile joint 10, the copper band is wound around the outer peripheral surface near the upper end 33 of the steel pipe pile 30 by having a gap y between the outer peripheral surface near the upper end 33 of the steel pipe pile 30. Can do.

  The material constituting the oblique pile joint 10 is not particularly limited as long as it has strength capable of supporting the steel pipe pile 20 when longitudinally joined. Specific examples include rolled steel for welded structures.

  As will be described later, the slant pile joint fitting 10 is used in contact with the suspension fittings 31 and 31 of the steel pipe pile 30. Therefore, the number and position of the diagonal pile joints 10 fixed to the steel pipe pile 20 can be changed as appropriate depending on the number and position of the suspension fittings 31 provided in the steel pipe pile 30. However, the hanging metal fittings provided on the steel pipe pile are usually installed at two places, the distance to the upper end of the steel pipe pile is equal, and are in a facing relationship. This is to make it easier to balance the steel pipe pile when the steel pipe pile is lifted. Therefore, in the drawings, a form in which two hanging brackets and two diagonal pile joints are used is illustrated.

  In addition, as will be described later, the support portion 12 of the diagonal pile joint 10 has an outer peripheral surface of the steel pipe pile 20 and an outer peripheral surface of the steel pipe pile 30 with the lower surface being in contact with the upper surface of the hanging metal fitting 31 of the steel pipe pile 30. Is used to guide the steel pipe pile 20 so that the Here, as shown in FIG.4 (b), the suspension metal fitting 31 of the steel pipe pile 30 is provided 1 each in the position which faces. Therefore, as shown in FIGS. 4A and 4C, the support portion 12 of the slant pile joint fitting 10 is fixed at a position offset by the thickness of the suspension fittings 31 and 31. In addition, from the viewpoint of appropriately guiding the steel pipe pile 20, it is preferable that the oblique pile joint 10 is fixed so that the longitudinal direction is parallel to the axis of the steel pipe pile 20. In addition, when attaching the diagonal pile joint 10 to the steel pipe pile 20 by welding, pay attention to bending and warping due to welding heat, and correct as necessary.

  Although the diagonal pile joint 10 is attached to the steel pipe pile 20 as described above, this attachment work can be performed in a factory in advance. Usually, the hanging metal fittings 31 provided on the steel pipe pile 30 are also attached at the factory in advance. Therefore, it is not necessary to perform these attachment operations at the construction site, and the work efficiency of the longitudinal connection of the piles can be improved as compared with the conventional method. In addition, since the oblique pile joint 10 can be attached in advance at the factory, the oblique pile joint 10 can be attached to a predetermined position with high accuracy, and the longitudinal joint of the pile can be performed with high precision. be able to.

  In addition, in the description of the present invention so far, the oblique pile joint fitting 10 made of a plate-like body has been described as an example, but the present invention is not limited to such a form. For example, the slant pile fitting according to the present invention can be formed of a rod-shaped body. FIG. 5 is a diagram (front view) schematically showing a steel pipe pile 20 to which a diagonal pile joint jig 40 according to another embodiment of the present invention is attached and a steel pipe pile 30 that longitudinally connects the steel pipe pile 20. It is. In FIG. 5, the same components as those shown in FIG.

  The oblique pile jointing jig 40 is composed of a rod-like body, and includes a fixing part 41 and a support part 42. Since the functions of the fixing part 41 and the support part 42 are the same as those of the fixing part 11 and the support part 12, the description thereof is omitted.

  Further, the oblique pile joining jig 40 has a bent portion 43 and a bent portion 44. The oblique pile joining jig 40 as viewed from the fixed portion 41 side is bent in a direction away from the steel pipe pile 20 at the bending portion 43, and further bent at the bending portion 44 toward the steel pipe pile 30 side. The bent portion 43 is provided above the lower end 23 of the steel pipe pile 20. By bending the diagonal pile joint jig 40 in this manner, the fixed portion 41 is fixed to the outer peripheral surface of the steel pipe pile 20 in the same manner as the oblique pile joint jig 10, and the lower end 23 of the steel pipe pile 20 and the steel pipe pile 30 are fixed. A gap can be formed between the outer peripheral surface in the vicinity of the joint 25 and the outer peripheral surface in the vicinity of the upper end 33 of the steel pipe pile 30 positioned below when the upper end 33 of the steel pipe is abutted.

  The material constituting the oblique pile joining jig 40 is not particularly limited as long as it can support the steel pipe pile 20 when longitudinally joined, and the same material as the oblique pile joining jig 10 can be used.

  As described above, when the oblique pile joining jig is formed of a rod-like body, the processing is easy, and the oblique pile joining jig can be manufactured at a low cost.

  Further, in the description of the present invention so far, the description has been given by taking as an example the form in which the oblique pile joint metal fitting is attached to the outer peripheral surface of the pile positioned above among the piles to be longitudinally joined. It is not limited. The pile is not necessarily provided with a hanging bracket only near one end thereof, and may have a hanging bracket near both ends. In such a case, the oblique pile joining jig may be fixed to a pile located below among the two steel pipe piles to be longitudinally joined. FIG. 6 is a diagram (front view) schematically showing a steel pipe pile 30 to which a diagonal pile joining jig 60 according to another embodiment of the present invention is attached and a steel pipe pile 20 ′ longitudinally connected to the steel pipe pile 30. Figure). In FIG. 6, the same components as those shown in FIG.

  The steel pipe pile 20 ′ is the same as the steel pipe pile 20 except that the outer peripheral surface near the lower end is provided with the hanging metal fittings 21 ′ and 21 ′.

  The oblique pile joining jig 60 is formed of a plate-like body and includes a fixing portion 61 and a support portion 62. The fixing portion 61 is the same as the fixing portion 11 except that the fixing portion 61 is fixed to the steel pipe 30.

  The support portion 62 fixes the fixing portion 61 to the outer peripheral surface of the steel pipe pile 30 and extends from the fixing portion 61 to the steel pipe pile 20 ′ side when the lower end of the steel pipe pile 20 ′ and the upper end 33 of the steel pipe pile 30 are abutted. doing. Further, the support portion 62 can be brought into contact with a hanging metal fitting 21 'provided on the outer peripheral surface of the steel pipe pile 20' to guide the steel pipe pile 20 'to a predetermined position. In this case, the lower surface of the hanger 21 ′ is supported by the upper surface of the support portion 62.

  Further, the oblique pile joining jig 60 has a notch 63. The notch 63 is cut from below from the upper end 33 of the steel pipe pile 30. By providing such a notch 63, the fixing portion 61 is fixed to the outer peripheral surface of the steel pipe pile 30, and the lower end of the steel pipe pile 20 ′ and the upper end 33 of the steel pipe pile 30 are provided in the same manner as the oblique pile joining jig 10. Between the steel pipe pile 20 ′ and the outer peripheral surface in the vicinity of the joint portion of the steel pipe pile 30, and between the outer peripheral surface in the vicinity of the upper end 33 of the steel pipe pile 30 positioned below among the longitudinally connected piles. A gap can be formed.

  The material constituting the oblique pile joining jig 60 is not particularly limited as long as it can support the steel pipe pile 20 ′ when longitudinally joined, and the same material as the oblique pile joining jig 10 can be exemplified. .

  Moreover, in the description of the present invention so far, the case where the steel pipe pile is used as the longitudinally connected pile has been described as an example, but the present invention is not limited to such a form. The pile that can be longitudinally connected using the jig for connecting oblique piles according to the present invention is not particularly limited as long as it has a suspension metal fitting having sufficient strength in the vicinity of the end, for example, with a shell steel pipe It can also be used for concrete piles.

2. Inclined Pile Jointing Method Next, the oblique pile joining method of the present invention will be described by taking as an example a case where the steel pipe pile 20 and the steel pipe pile 30 are joined using the oblique pile joining jig 10. FIG. 7 is a diagram for explaining the oblique pile joining method of the present invention according to one embodiment. In addition, although the mode seen from one side is shown in FIG. 7, the mode seen from the opposite side is the same in each figure of FIG.

  When joining the steel pipe pile 20 and the steel pipe pile 30, first, the steel pipe pile 30 is penetrated into the ground 50 in a posture inclined at a predetermined angle with respect to the vertical direction. Although the method to penetrate the steel pipe pile 30 in the ground 50 is not specifically limited, For example, the construction method penetrated into the ground 50, rotating the steel pipe pile 30 is preferable. In this method, two semi-circular steel plates are attached to the tip of a steel pipe pile in a cross shape to form a tip wing, which gains propulsion by rotation and penetrates into the ground. It is called a rotationally penetrating steel pipe pile. Rotating penetrating steel pipe piles with tip wings are characterized by being able to suppress noise and vibration and obtain a large bearing capacity.

  In constructing the steel pipe pile 30 by rotation penetration, first, the rotation penetration device is inclined at a predetermined angle and installed at a predetermined position. The rotary penetration device includes a three-point pile driving machine and an all-around rotary machine according to the pile diameter to penetrate. Although the description here is for the all-round rotating machine, the present invention is not limited to this.

  Next, the steel pipe pile 30 is grasped by the gripping device of the rotary penetration device, and the steel pipe pile 30 is penetrated into the ground 50 while rotating the steel pipe pile 30 together with the gripping device. Once the rotary penetrator is pushed to the full stroke, the steel pipe pile 30 is once released from the gripping state, the rotary penetrator is returned to the initial position, and then the steel pipe pile 30 is gripped again. By repeating this cycle, the steel pipe pile 30 is gradually penetrated into the ground 50. When the upper end 33 of the steel pipe pile 30 approaches the gripping position by the gripping device, the penetration work of the steel pipe pile 30 is once finished. At this time, the steel pipe pile 30 is stopped so that the hanging metal fittings 31, 31 provided on the steel pipe pile 30 are aligned in a substantially vertical direction with respect to the vertical plane including the inclination direction (axial direction) of the steel pipe pile 30. In order to facilitate the balance of the steel pipe pile 20 when adjusting the position of the steel pipe pile 20 while supporting the steel pipe pile 20 with the hanging metal fittings 31, 31 via the diagonal pile joint jig 10 in the later process. is there.

  Next, as explained below, the upper end 33 of the steel pipe pile 30 and the lower end 23 of the steel pipe pile 20 are joined. In order to join the upper end 33 of the steel pipe pile 30 and the lower end 23 of the steel pipe pile 20, the oblique pile joining jig 10 is attached to the outer peripheral surface in the vicinity of the lower end 23 of the steel pipe pile 20 in advance. Then, as shown in FIG. 7A, the steel pipe pile 20 is hung with a crane or the like by placing the wire 51 on the suspension fittings 21 and 21 of the steel pipe pile 20, and the steel pipe pile 20 is disposed above the steel pipe pile 30.

  Next, as shown in FIG. 7B, the steel pipe pile 20 is lowered while the lower surface of the support portion 11 of the slant pile joint jig 10 is brought into contact with the upper surface of the suspension fitting 31 of the steel pipe pile 30. And as shown in FIG.7 (c), the steel pipe pile 20 is guide | induced to a predetermined position, supporting the steel pipe pile 20 (diagonal pile joint jig | tool 10) by the support part 12. As shown in FIG. That is, the upper end 33 of the steel pipe pile 30 and the lower end 23 of the steel pipe pile 20 are abutted, the axial direction of the steel pipe pile 30 and the axial direction of the steel pipe pile 20 are matched, and the outer peripheral surface of the steel pipe pile 30 and the steel pipe pile 20 Make the outer peripheral surface flush.

  After inducing the steel pipe pile 20 as described above, the upper end 33 of the steel pipe pile 30 and the lower end 23 of the steel pipe pile 20 are joined. Although the method of joining the steel pipe pile 30 and the steel pipe pile 20 is not particularly limited, as described above, the outer peripheral face in the vicinity of the joint 25 of the steel pipe pile 30 and the steel pipe pile 20 and the outer peripheral face in the vicinity of the upper end 33 of the steel pipe pile 30. Since the gaps x and y are formed between the steel pipe pile 30 and the steel pipe pile 20, it is possible to easily join the steel pipe pile 30 and the steel pipe pile 20.

  After joining the steel pipe pile 30 and the steel pipe pile 20 as described above, as shown in FIG. 7D, the hanging metal fitting 31 and the oblique pile joining jig 10 are cut off. This is because the ground 50 may be disturbed when penetrating with the rotary penetrating machine. Thereafter, the penetration by the rotary penetration machine is resumed, and when the upper end of the steel pipe pile approaches the gripping position by the gripping device again, the same process as described above is repeated.

  As described above, the oblique pile connection method of the present invention can perform the longitudinal connection of the pile without making a hole in the pile, and therefore can perform the longitudinal connection without causing a cross-sectional defect in the pile. Moreover, since the slant pile splicing method of the present invention does not use a heavy object that may be dropped or a thing that easily falls off, the safety is also improved.

3. Manufacturing method of structure As mentioned above, the slant pile buried in the ground can be suitably used as a foundation member for civil engineering and construction. Therefore, the method of embedding a slant pile using the slant pile splicing method of the present invention can be suitably used for foundation work when manufacturing a structure.

  Although the invention has been described with reference to embodiments that are presently practical and preferred, the invention is not limited to the embodiments disclosed herein, but is claimed. Can be changed as appropriate without departing from the scope or spirit of the invention that can be read from the entire specification and the specification, and a jig for slant pile joint, a pile with a jig, a slant pile splicing method, and a structure with such a change This manufacturing method should also be understood as being included in the technical scope of the present invention.

10, 40, 60 Angle pile splicing jig 11, 41, 61 Fixing portion 12, 42, 62 Support portion 13, 14, 63 Notch 43, 44 Bending portion 20, 20 'Steel pipe pile 21, 21' Hanging bracket 23 Lower end 25 Joint 30 Steel pipe pile 31 Suspension fitting 32 Through hole 33 Upper end 50 Ground

Claims (9)

An oblique pile joint jig used for longitudinal joining of piles in a posture inclined at a predetermined angle with respect to the vertical direction,
A fixed portion fixed to the outer peripheral surface of one of the longitudinally piled piles,
When the fixed portion is fixed to the outer peripheral surface of the one pile and the ends of the longitudinally connected piles are butted together, the other portion of the longitudinally connected piles extends from the fixed portion to the side where the other pile is provided. And a support portion that abuts on one surface of the hanging bracket provided on the outer peripheral surface of the other pile,
A jig for connecting piles. When the fixed portion is fixed to the outer peripheral surface of the one pile and the ends of the piles to be cascaded are butted together,
The inclined pile joint jig according to claim 1, wherein a gap is provided between an outer peripheral surface in the vicinity of a joint portion between the piles to be longitudinally joined. When the fixed portion is fixed to the outer peripheral surface of the one pile and the ends of the piles to be cascaded are butted together,
The diagonal pile splicing jig according to claim 1 or 2, wherein a gap is formed between the piles to be longitudinally connected and an outer peripheral surface in the vicinity of an upper end of the pile positioned below.   The slant pile joining jig according to claim 2 or 3, wherein the jig is composed of a plate-like body, and the gap is formed by cutting out the plate-like body.   The slant pile joint jig according to claim 2 or 3, wherein the jig is composed of a rod-shaped body, and the gap is formed by bending the rod-shaped body.   The pile with a jig | tool provided with the jig | tool for the diagonal pile joint in any one of Claims 1-5 in the outer peripheral surface of an edge part vicinity. A diagonal pile connection method for longitudinally connecting piles in a posture inclined at a predetermined angle with respect to the vertical direction,
A fixing step of attaching a fixing part of the oblique pile joint jig according to any one of claims 1 to 5 to the outer peripheral surface of one of the piles to be longitudinally connected,
Among the longitudinally piled piles, a pile positioned on the upper side of the longitudinally piled piles is predetermined while a support portion of the oblique piled joint jig is brought into contact with a suspension fitting provided on the outer peripheral surface of the other pile. A guiding process for guiding to the position of
Inclined pile splicing method including. In the fixing step, on the outer peripheral surface of the pile located above the pile to be longitudinally connected, the fixing portion of the oblique pile joining jig according to any one of claims 1 to 5,
Of the longitudinally connected piles, the pile located below has a pair of suspension brackets and the pair of suspension brackets face each other, and the pair of suspension brackets has an inclination direction of the pile located below. The slant pile splicing method according to claim 7, wherein the guiding step is performed after the piles positioned below are stationary so as to be arranged in a substantially vertical direction with respect to the vertical plane including the vertical plane.   The manufacturing method of a structure including the process of embedding a diagonal pile by the diagonal pile joint method of Claim 7 or 8.

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