JP2013194455A - Anti-vibration jig for inclined pile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ant-vibration jig with which a connection part clamper can be mounted to a lower pile head and an upper pile head to be connected can be guided easily to a connection part.SOLUTION: A jig 5 is provided in a head of a lower pile 1 which is installed into the ground while being inclined and guides a lower end of an upper pile 3 which is added longitudinally to the head of the lower pile 1 onto the head of the lower pile 1 while stopping vibration. The jig 5 comprises an annular band 7 mounted to the head of the inclined lower pile 1 and a guide member 9, in a pile axis direction, mounted to the band 7 beforehand and protruding higher than the head of the lower pile 1.

Description

  This invention is provided at the head of a lower pile built in an inclined manner on the ground, and the lower end of the upper pile that is cascaded to the head of the lower pile is steady on the head of the lower pile. The present invention relates to an anti-sway jig for a slant pile that guides and joins the head of the lower pile in a state to facilitate welding of the upper and lower piles.

  The prior art described in Patent Document 1 is a technique in which when a concrete pile or the like is mechanically longitudinally connected, the lower end of the upper pile is guided and joined in a state in which the lower end of the upper pile is steady. Therefore, as an example, there is one described in FIGS. This is because four guide members in the pile axis direction are arranged at equal intervals on the outer periphery of the head of the lower pile, and each guide member is individually bolted to the lower pile, and on the outside of each guide member The annular member is tightened so as to fit the tag. The guide members on the outer periphery of the lower pile are guided while being steady at the lower end of the upper pile to be suspended and joined to the head of the lower pile. Another example described in Patent Document 1 is described in FIGS. 7 and 8 of the same document. This is a structure in which two guide members in the pile axis direction are directly attached to the lower half circumference side of the head of the lower pile built obliquely by bolts so as to be parallel to each other from the outside. Therefore, the two guide members are guided on the upper surfaces of the upper piles to be suspended, and are joined to the heads of the lower piles while keeping the lower ends of the upper piles steady.

JP 2009-85007 A

However, what is described in Patent Document 1 is that a plurality of guide members in the pile axial direction are individually and directly attached to the lower pile by bolts. Therefore, in order to attach all the guide members to the lower pile, it is necessary to attach them individually using a plurality of bolts for each guide member. For this reason, the thing of patent document 1 needs to tighten many bolts in total, and there exists a fault that it takes too much time for attachment of a steadying jig | tool. In addition, the prior art in which the annular member is tightened from the outside of each guide member so as to fit the tag has a drawback in that it requires more work since the annular member is attached and tightened.
Then, this invention aims at simplifying the operation | work which attaches a steadying jig | tool to the head of a lower pile.

  According to the first aspect of the present invention, the slant pile steadying jig is attached to the head of a lower pile built in an inclined manner on the ground, and is connected to the head of the lower pile. In the jig for guiding the lower end, an annular band attached to the head of the inclined lower pile, and a pile axial direction attached to the band in advance and protruding upward from the head of the lower pile And a guide member.

  Moreover, the slant pile steadying jig according to the second aspect of the present invention is the first aspect, wherein the annular band is wound around the outer periphery of the head of the lower pile. The guide member is attached only to a portion that should be positioned on the lower half circumference side of the lower pile. In the first aspect, the position of the guide member on the outer periphery of the head of the lower pile is not specified, but in the second aspect, it is specified that the guide member is located only on the lower half periphery side. Moreover, although the mounting position of the annular band is not specified either inside or outside of the lower pile in the first mode, it is assumed that it is mounted on the outer periphery of the lower pile in the second mode.

According to a third aspect of the present invention, the slant pile steadying jig according to the first or second aspect is characterized in that the guide member is detachably attached to the annular band. It is what. Therefore, it is possible to remove the guide member with the band attached to the lower pile.
Moreover, in the slant pile steadying jig according to the fourth aspect of the present invention, in any one of the first to third aspects, the annular band is continuous along the circumferential direction of the lower pile. A plurality of band pieces and a connecting portion for connecting the band pieces are provided.

Further, in the slant pile steadying jig according to the fifth aspect of the present invention, in any one of the first to fourth aspects, the annular band half-circulates the outer periphery of the head of the lower pile. It consists of two band pieces, and the connection part of both band pieces is provided in the uppermost part of the upper half circumference side of the inclined lower pile, and the lowermost part of the lower half circumference side of the lower pile.
Further, in the fifth aspect of the fifth aspect of the present invention, the slant pile steadying jig comprises the upper half connecting portion on the upper half circumference side by hinged the two band pieces. It is characterized by.

  Further, the slant pile steadying jig according to the seventh aspect of the present invention is the slant pile stabilization jig according to the first aspect, wherein the annular band is formed on the inner periphery of the head of the hollow lower pile and the upper portion in the axial direction is the lower pile. The guide member is mounted only on the portion of the band that should be positioned on the upper half circumference side by being fitted in a state of protruding upward in the axial direction.

  According to this invention, since the attachment of the steady rest jig is possible only by attaching the band on which the guide member in the pile axial direction is previously attached to the lower pile, the steady rest jig is attached to the head of the lower pile. There is an effect that the work becomes easy.

It is explanatory drawing which shows 1st Embodiment, (a) is the front view which disregarded the inclination and the lower pile and the steady rest jig, (b) inclined the lower pile and the steady rest jig The side view shown and expressed, (c) is a plan view seen from the axial direction of (a), (d) is a DD line cross-sectional enlarged view of (c). The side view which shows the state which guided the lower part of the upper pile in the 1st Embodiment, steadying to the upper part of the lower pile. The side view which shows the example of the direction which draws the lower part of the upper pile suspended in 1st Embodiment to the upper part of a lower pile. The top view similar to FIG.1 (C) which shows 2nd Embodiment. (A) is a plan view similar to FIG. 1 (C) showing the third embodiment, and (b) is a plan view similar to FIG. 1 (C) showing the fourth embodiment. The cross-sectional enlarged view which shows 5th Embodiment. Explanatory drawing which shows 6th Embodiment.

FIGS. 1 to 3 are views showing a first embodiment of the present invention, and it is assumed that the lower pile 1 and the upper pile 3 used here are both steel pipe piles. The upper pile 3 is suspended from the head of the inserted lower pile 1 and welded to be longitudinally connected.
The state of FIG. 1 shows a state in which a steadying jig 5 is provided on the head of the lower pile 1. The lower pile 1 is built in the ground in a state where it is inclined at a predetermined angle by means such as rotary press-fitting as shown in FIG. Here, what is guided to the head of the lower pile 1 while keeping the lower end of the upper pile 3 shown in FIGS. 2 and 3 steady is the steadying jig 5 shown in FIG. 1A is a front view of the lower pile viewed from a direction perpendicular to the pile axis ignoring the inclination, and FIG. 1C is a plan view of the lower pile similarly viewed from the pile axis direction. It is.

  The steady rest jig 5 includes an annular band 7 attached to the head of the lower pile 1 and a guide member in the pile axial direction that is attached to the band 7 in advance and protrudes upward from the head of the lower pile 1. 9 and. The band 7 is made of steel or other metal, and is formed in a size and shape that can be formed by bending an elongated flat plate in accordance with the shape of the outer periphery of the lower pile 1 and fitting and fixing to the outer periphery of the lower pile 1. Therefore, the band 7 may be an endless continuous ring, or one of the rings may be cut to form a C shape. In the case of this C-shape, a connecting portion that makes the entire ring shape by closing both ends close to each other is required.

  However, in the case of this embodiment, it is not annular or C-shaped, and as shown in the figure, the band 7 is divided into two band pieces 7a and 7a each half-circulating the outer periphery of the head of the lower pile 1. . The connecting portions of both band pieces 7a, 7a are provided at the uppermost part of the upper half circumferential side 1a of the inclined lower pile 1 and at the lowermost part of the lower half circumferential side 1b of the lower pile 1, respectively. Reference numeral 7b is the uppermost connecting part, and reference numeral 7c is the lowermost connecting part. In this embodiment, the end portions of the band pieces 7a and 7a are bent outward and raised, and the connecting portions 7b and 7c are formed by the rising portions facing each other. Both the connecting portions 7b and 7c are bolts. Both band pieces 7a, 7a are connected by a nut. However, the band 7 may be formed by bending a single thin flat plate without dividing it, and may be formed into an annular shape only by the lowermost connecting portion 7c. This is the C-shaped band 7 described above. In any of the above cases, other conventional connection means may be employed instead of the bolts and nuts.

  The names of the upper half circumference side 1a and the lower half circumference side 1b shall be used for the band 7 in the same manner as the lower pile 1, and the guide member 9 in the axial direction of the pile is mounted on the lower half circumference side 1b of the band 7, The upper half circumferential side 1a of the head of the lower pile 1 is opened to the upper half circumferential side 1a of the band 7 without providing the guide member 9 in the pile axial direction. In this embodiment, two guide members 9 are mounted on the lower half side 1b of both the band pieces 7a, 7a.

  The guide member 9 is also made of a rod-like material made of steel or other metal like the band 7. Since the guide member 9 guides the lower end of the upper pile 3 while keeping the steady state as will be described later, the length, the cross-sectional shape and the number suitable for the guide member 9 are set. Guide members 9 are used, and each is fixed to the band 7 in advance by welding or other means. Of course, other cross-sectional shapes and numbers can be used, and an angle member is also particularly suitable as the guide member 9. In this embodiment, the surface on the lower pile 1 side of the guide member 9 and the inner surface of the band 7 are flush with each other. It may be outside the inner surface. For example, the lower pile 1 side surface of the guide member 9 may coincide with the outer surface of the band 7.

  When the upper pile 3 is suspended, a steadying jig 5 is attached to the lower pile 1 built to a predetermined depth at a predetermined angle. This mounting is performed by externally fitting the band 7 to which the plurality of guide members 9 are fixed in advance to the head of the lower pile 1 as described above. First, the pair of band pieces 7a, 7a, to which the guide members 9 are fixed, are loosely connected by the connecting portion 7b on the upper half side 1a. Specifically, the bolts and nuts are screwed in halfway, and both band pieces 7a, 7a are connected so as to be relatively free to move, and this is hung around the outer periphery of the head of the lower pile 1 . Since the lower pile 1 is inclined, the load of the steady rest jig 5 is applied to the upper half circumferential side 1a of the bottom pile 1 even at this stage. While tightening the connection part 7b, the connection part 7c of the lower half circumference side 1b is fastened with a bolt nut. In this way, since the connecting portions 7b and 7c are arranged at the upper and lower positions of the inclined pile head, a part of the load of the steady rest jig 5 can be temporarily applied to the lower pile 1 in the mounting process. In this state, the connecting operation of the connecting portion 7c on the lower half circumference is possible, so that the steadying jig 5 can be easily attached to the lower pile 1.

  Thus, the upper pile 3 is longitudinally connected to the head of the lower pile 1 to which the steadying jig 5 is attached as shown in FIG. The lower end of the upper pile 3 is subjected to groove processing, and a slope 3a having a predetermined groove angle is formed. After the upper pile 3 is suspended from above the lower pile 1 and the lower end of the upper pile 3 is in contact with the guide member 9 of the steadying jig 5, the upper pile 3 is guided by this and kept steady on the head of the lower pile 1. It reaches. At this time, since the guide member 9 is only on the lower half circumference side 1b and not on the upper half circumference side 1a, the upper pile 3 suspended from above is in a state where there are no members obstructing from the opened upper half circumference side 1a. It will be received by the guide member 9, and will reach the head of the lower pile 1 smoothly. In addition, although not shown in figure, the backing ring for welding is attached along the inner periphery inside the upper end of the lower pile 1, or the inner side of the lower end of an upper pile.

  In this state, the upper pile 3 is welded to the lower pile 1 in the field. At this time, since the upper half-circumference side 1a is open without the guide member 9, it can be welded in a state where there are no obstacles over a half-round. Therefore, at this stage, the temporary fixing of the upper pile 3 with respect to the lower pile 1 is performed with sufficient strength. Therefore, after that, by removing the band 7 from the lower pile 1, the steadying jig 5 is removed from the lower pile 1 and the entire circumference between the upper and lower piles 1, 3 may be welded. The removal of the steady rest jig 5 is only required to remove the band 7 from the lower pile 1.

  FIG. 3 shows a method of guiding the suspended upper pile 3 to the lower pile 1, and a wire rope laid between a bracket 3b projecting from the upper pile 3 and a steadying jig 5 of the lower pile 3. A method of pulling the upper pile 3 against the lower pile 1 by using a pulling tool 11 (for example, a lever block (registered trademark) or a chain block) is described. As a result, the upper pile 3 is not only suspended by a crane or the like but also drawn by the traction tool 11, and the upper pile 3 is longitudinally connected in a state where the stability is increased.

FIG. 4 shows a second embodiment of the present invention, which is different from the first embodiment in the configuration of the band 7 of the steady jig 5. That is, the band 7 is composed of the band piece 7d on the upper half circumferential side 1a and the band piece 7e on the lower half circumferential side 1b, and the axial guide member 9 is mounted only on the band piece 7e on the lower half circumferential side 1b. For this reason, the connecting portions 7f and 7f of the band pieces 7d and 7e are at the same height position. Here, the mounting of the steady rest jig 5 on the lower pile 1 is performed by allocating the band piece 7d on the upper half circumferential side 1a to the upper side of the lower pile 1 and the lower half circumference in which the guide member 9 has already been fixed from the lower side. The connecting portions 7f and 7f are connected by bolts and nuts with the band piece 7e on the side 1b being applied. Other configurations and operations of the respective parts are the same as those in the first embodiment.
FIG. 5 (a) is a third embodiment of the present invention. In this embodiment, instead of the connecting portion 7b by the bolt and nut on the upper half circumferential side 1a of the band pieces 7a, 7a in the first embodiment, the connecting portions formed by hinged to the end portions of the band pieces 7a, 7a. Part 7g.

  Therefore, since this connection part 7g is comprised with a hinge, both band piece 7a, 7a can turn outward centering on the pivot of the connection part 7g in Fig.5 (a). Therefore, it is possible to open both the band pieces 7a and 7a by this turning and move them to the head position of the lower pile 1 and to put the whole steady rest jig 5 on the upper half side 1a of the lower pile 1 as it is. it can. As a result, all or part of the load is applied to the lower pile 1, and then both the band pieces 7a and 7a are turned in the opposite direction and closed. In this state, the steadying jig 5 can be attached to the head of the lower pile 1 by tightening the connecting portion 7c on the lower half side 1b with a bolt and nut.

  Therefore, according to this embodiment, the attachment to the lower pile 1 is facilitated by opening and closing both the band pieces 7a, 7a, and the load of the steady rest jig 5 can be applied to the lower pile 1. But the mounting becomes easy. Furthermore, in this embodiment, since the bolts and nuts are tightened only at the connecting portion 7c, the mounting is facilitated also in this respect. The steady rest jig 5 can be easily removed by opening both the band pieces 7a and 7a after loosening the bolts and nuts of the connecting portion 7c. Other configurations and operations are the same as those in the first embodiment.

  FIG. 5B shows a fourth embodiment of the present invention. In this embodiment, the band 7 is composed of three band pieces 7h, 7i, 7j, and the band piece constituting the band 7 may be more than two. These band pieces 7h, 7i, and 7j are connected in an annular shape by three connecting portions 7k, 7m, and 7c. Of these, the connecting portion 7c is formed by a bolt and nut as in the first and third embodiments. The connecting portions 7k and 7m are the same hinges as those in the third embodiment (FIG. 5A).

FIG. 6 shows a fifth embodiment of the present invention. While the guide members 9 in the pile axial direction in the first to fourth embodiments so far are all integrally mounted on the band 7 by means such as welding, this embodiment is detached from the band 7. It is a form that can be mounted.
That is, a bolt 9a is projected from the inside to the outside of the band 7, and the bolt 9a is passed through the guide member 9 applied to the band 7 from the outside, and a nut is formed from the tip of the bolt 9a. 9b is screwed. The head of the bolt 9a may be welded to the band 7 after entering the recess formed on the inner surface of the band 7. Further, if the guide member 9 is formed with a recess 9c that fits outside the band 7, the surface of the guide member 9 on the lower pile 1 side is flush with the outer surface of the lower pile 1 and the upper pile not shown. Therefore, it is suitable for guiding the upper pile (see FIGS. 2 and 3).

  According to this embodiment, the guide member 9 can be detached from the band 7 by releasing the screwing of the nut 9b. In this way, when there are a plurality of guide members 9 as in the above-described embodiments, a part of the guide members 9 is sequentially detached from the band 7, so that the upper pile 3 is supported by the upper and lower piles 3 by the all guide members 9. The guide member 9 can be released little by little according to the progress of welding of the piles 1 and 3. It should be noted that the means for detachably mounting the guide member 9 may be different. That is, the guide member 9 can be removably inserted into the band 7 from above, or a magnetic attachment means can be used if the mounting strength is ensured.

FIG. 7 shows a sixth embodiment of the present invention. In each of the above embodiments, the band 7 is attached to the outer periphery of the head of the lower pile 1, whereas in this embodiment, the band 7 is attached to the inner periphery of the head of the lower pile 1.
The band 7 in this embodiment consists of a ring-shaped or C-shaped annular member as a whole, and a total of four guide members 9 are fixed to the upper half circumferential side 1b on the inner side. Here, the guide member 9 is positioned on the upper half circumferential side 1b opposite to the four guide members 9 in the first to fifth embodiments. In the head of the lower pile 1, a stopper 12 made of a plurality of steel pieces is welded when the lower pile 1 is manufactured, and after the lower pile 1 is built in a predetermined ground, The band 7 to which the guide member 9 is attached in advance as described above is fitted. The positioning is performed. If the band 7 is C-shaped, the diameter of the band 7 can be changed, so that the band 7 can be fitted to the inner surface of the lower pile 1.

  In this state, the upper pile 3 is suspended from above. At that time, the tip of the guide member 9 hits the inner surface of the upper half side 1a of the upper pile 3, and the upper pile 3 is guided to the upper end of the lower pile 1 in this state. To do. For this reason, the upper pile 3 reaches the lower pile 1 smoothly. Further, the guide member 9 does not protrude from the lower half circumferential side 1b of the lower pile 1. Therefore, as shown in FIG. 7, even if the upper pile 3 is not inclined like the lower pile 1 and descends in a mode close to vertical, the lower half circumferential side 1b has no protrusions and is open. There is no hindrance to the descent of the pile 3, and the upper pile 3 is smoothly guided as described above.

  In addition, when the lower end of the upper pile 3 hits the upper edge of the band 7, the lower end of the upper pile 3 is fitted to the outer periphery of the band 7 by slightly rolling the upper pile 3, and the upper end of the lower pile 1 is I will ride. However, if the guide surface of the guide member 9 is flush with the outer peripheral surface of the band 7, the lower end of the upper pile 3 will not hit the upper surface of the band 7, and the same applies even if the upper surface of the band 7 is tapered. It is. According to this embodiment, the steady rest jig 5 remains inside the lower pile 1 and the upper pile 3, but the effect that the band 7 becomes a backing ring when welding both the piles 1, 3 is achieved. There is.

  Each band 7 in each of the above embodiments is formed by curving a metal elongated flat plate, but the cross-sectional shape is not limited to the above, and various types can be adopted. . Regarding the band 7, the material is steel or other metal in any of the embodiments, but particularly in the first to fifth embodiments, if the copper band 7 is used, the welding drooped when the upper and lower piles 1 and 3 are welded. Since the metal is not welded to the copper band 7, the band 7 can be easily removed.

  Further, the number and shape of the guide members 9 are not limited to those described above. In the first to fifth embodiments, the guide member 9 has only to be arranged within a range of an angle of 180 degrees around the lower pile 1 around the lowermost part on the lower half circumference side. In the form, conversely, it is only necessary to be disposed within the range of an angle of 180 degrees around the lower pile 1 around the uppermost part on the upper half circumference side. As for the shape of the guide member 9, it has been described above that a rod-shaped member such as a square or angle member is used. For example, in the second and sixth embodiments, each of the four guide members 9 is provided. One guide member may be constituted by a curved plate-like member having a radius of curvature that is the same as or similar to that of the band 7 including the guide surface. In the first, third, and fourth embodiments, the curvature of the band pieces 7a, 7i, and 7j including the guide surfaces of the two guide members 9 is the same as or similar to that of the band pieces 7a, 7i, and 7j. One guide member may be formed on each of the band pieces 7a, 7i, and 7j by a curved plate-like member having a radius.

DESCRIPTION OF SYMBOLS 1 Lower pile 1a Upper half circumference side 1b Lower half circumference side 3 Upper pile 5 Stabilizing jig 7 Band 7a, 7d, 7e, 7h, 7i, 7j Band piece 7b, 7c, 7f, 7g, 7k, 7m Connection part 9 Guide member

Claims (7)

  In the jig which is attached to the head of the lower pile built to be inclined to the ground and guides the lower end of the upper pile which is cascaded to the head of the lower pile, the head of the inclined lower pile An anti-swaying device for a slant pile comprising: an annular band attached to a portion; and a guide member in a pile axial direction that is attached to the band in advance and protrudes upward from the head of the lower pile jig.   The annular band is wound around the outer periphery of the head of the lower pile, and a guide member is attached only to a portion of the band that should be positioned on the lower half side of the lower pile. The steady rest jig for a slant pile according to claim 1.   3. The slant pile steadying jig according to claim 1, wherein the guide member is detachably attached to the annular band.   The annular ring includes a plurality of band pieces that are continuous along the circumferential direction of the lower pile, and a connecting portion that connects the band pieces. The slant pile steady rest jig according to claim 1.   The annular band is composed of two band pieces that respectively circulate around the outer periphery of the head of the lower pile, and the upper half of the upper half of the lower pile and the lower half of the lower pile are inclined at the connecting portion of both band pieces. The slant pile steadying jig according to any one of claims 1 to 4, wherein the jig is provided at a lowermost portion.   6. The slant pile steadying jig according to claim 5, wherein the two band pieces are hinged to form an uppermost connection portion on the upper half circumference side.   The annular band is fitted to the inner periphery of the head of the hollow lower pile with the upper portion in the axial direction protruding upward from the lower pile in the axial direction, and is positioned on the upper half of the band. 2. The slant pile steadying jig according to claim 1, wherein the guide member is attached only to a portion to be fixed.

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