JP2009174124A - Pile core position confirmation method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pile core position confirmation method capable of accurately and easily confirming the core position of a pile before and after installing the pile by using an existing tool. <P>SOLUTION: Length inspection bars 4 are attached to the pile core 1 at two positions in the directions at right angle to each other, respectively. A relief core 2 is formed at the end of each length inspection bar 4. To secure the direction of the length inspection bar 4, one or relief cores 3 are formed between the relief core 2 and the pile core 1 at positions where the relief core 3 is brought into contact with the length inspection bar 4. A pile 5 is set to the pile core 1, and the length inspection bars 4 are set horizontal and brought into contact with the pile core 5 while aligning with the relief core 2 for confirming a pile core first position. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a method for confirming a pile core position that uses an existing jig to accurately and easily confirm a pile core position of a pile before and during the building.

  Conventionally, as shown in FIG. 5, when the pile 5 or the excavation rod 6 or the yatco 8 is embedded, they are correctly installed on the pile core 1 or after the excavation is finished, the pile 5 or the excavation rod 6 or the yatco 8 In order to confirm whether or not is exactly at the position of the pile core 1, there is known a method in which the relief core 2 is installed in two perpendicular directions.

  However, in such a management method, it is difficult to apply the measuring rod 4 to the same position as before when the pile core 1 is confirmed during the installation of the pile 5, and the horizontal accuracy of the measuring rod 4 is difficult. There was a problem of being bad.

  In order to solve the conventional problem shown in FIG. 5, recently, a pair of rod-like bodies pivotably attached to each other as shown in, for example, Japanese Patent Application Laid-Open No. 2006-348593 (Patent Document 1) are substantially omitted. A pile core rod hole is formed at the corner of the rod-shaped body that is fixed at a right-angled position and is inserted at a substantially right angle, and at the same distance from the pile core rod hole in a pair of rod-shaped bodies. Pile core management jigs have been developed that each form a clearance core hole for inserting the clearance core.

JP 2006-348592 A

  However, in the invention of Patent Document 1, it is easy to confirm the pile core position before erection by using a pile core management jig that is provided so that a pair of rod-shaped bodies can be fixed at substantially right angle positions. Although it can be done, the exact pile core position of the pile during construction of this pile core management jig pile or the rod during excavation cannot be confirmed. This may cause misalignment and cause misalignment.

  Further, the invention of Patent Document 1 requires a new jig to perform pile core management, and there is a problem that it takes time to manufacture and manage the jig.

  This invention solves the said subject, The place made into the objective provides the method of performing the confirmation of the pile core position before and during construction accurately and easily using the existing jig. It is in.

  The first configuration of the pile core position confirmation method according to the present invention for achieving the above object is that the measuring rods are provided at a predetermined plurality of angular directions of the pile core in at least two places in each direction. Set the pile or excavation rod to the pile core in alignment with the core, and put the end of the measuring rod against the pile or excavating rod while aligning the measuring rod with each relief core so that it is horizontal. The position is confirmed.

  Moreover, the 2nd structure of the confirmation method of the pile core position which concerns on this invention provided the supporting member which supports the said measuring rod in the said escape core so that free movement was possible in the said 1st structure. .

  Moreover, the 3rd structure of the confirmation method of the pile core position which concerns on this invention has provided the leveling device in the said measuring rod in the said 1st, 2nd structure, It is characterized by the above-mentioned.

  Moreover, the 4th structure of the confirmation method of the pile core position which concerns on this invention has provided the instruction | indication means corresponding to the said relief core position in the said measuring rod in the said 1st-3rd structure, It is characterized by the above-mentioned. To do.

  Moreover, the 5th structure of the confirmation method of the pile core position which concerns on this invention performs confirmation of a pile core position using the said relief core in the said 1st-4th structure during the construction of a pile. Features.

  According to the first configuration of the method for confirming the pile core position according to the present invention, the pile rod can be applied to the same position without being displaced, regardless of whether the pile is buried or not. It is possible to confirm the deviation. In addition, the configuration is simple and can prevent the misalignment from occurring at low cost.

  Moreover, according to the 2nd structure of the confirmation method of the pile core position which concerns on this invention, a measuring rod can be supported so that it can move freely with the support member provided in the relief core, and a person does not have a measuring rod. In both cases, the end of the measuring rod can be applied to the pile to check the pile core position.

  Moreover, according to the 3rd structure of the confirmation method of the pile core position which concerns on this invention, the levelness of this measuring rod can be confirmed by visually recognizing the level provided in the measuring rod.

  Moreover, according to the 4th structure of the confirmation method of the pile core position which concerns on this invention, the length of the measuring rod from a relief center to a pile is made by matching the instruction | indication means provided in the measuring rod to the relief core position. The distance of misalignment can be accurately grasped.

  Moreover, according to the 5th structure of the confirmation method of the pile core position which concerns on this invention, a pile core position can be confirmed during construction of a pile using the above-mentioned relief core.

  An embodiment of a method for confirming a pile core position according to the present invention will be specifically described with reference to the drawings. 1 (a) and 1 (b) are a plan view and a side view for explaining a method for confirming a pile core position according to the present invention, and FIGS. 2 and 3 support a measuring rod provided on the relief core in a freely movable manner. The figure which shows the structure of various support members, Fig.4 (a) is a side view explaining the confirmation method of the pile core position of the excavation rod for burying a ready-made pile, FIG.4 (b) is connected to the upper part of this pile It is a side view explaining the confirmation method of the pile core position of the Yatco (employment pile).

  In FIG. 1 to FIG. 5, when checking the position of the pile core 1, the measuring rod 4 whose one end 4 a is in contact with the surface of the rotary shaft of the pile 5, the Yatco (employed pile) 8 or the excavating rod 6 is fixed to the pile core 1. The pile 5, Yatco 8 or excavation rod 6 is set on the pile core 1 in accordance with the relief cores 2 and 3 provided in at least two locations in each of the angular directions, and the measuring rod 4 is leveled. As described above, the position of the pile core 1 can be confirmed by applying the one end 4a of the measuring rod 4 to the pile 5, Yatco 8 or the excavating rod 6 while adjusting to the respective escape cores 2 and 3.

  In this embodiment, although the example which match | combined the measuring rod 4 with two places of the orthogonal | vertical direction of the pile core 1 is shown, the structure which uses the other several number measuring rod 4 set to other various angles, It is also possible to provide two or more other relief cores in each direction.

  The escape cores 2 and 3 are erected on the ground G corresponding to the position of the pile core 1 set in advance, and the escape cores 2 and 3 support members 7a and 7b that support the measuring rod 4 so as to be freely movable. Is provided. A round level (not shown) is attached to the escape cores 2 and 3 so that the verticality of the escape cores 2 and 3 can be confirmed.

  The support members 7a and 7b shown in FIG. 2 are made of a plate material having a U-shaped cross section, and the support member 7a provided on the escape core 2 side is a horizontal piece provided with a through hole 7a6 through which the escape core 2 is inserted. A vertical piece 7a2 hangs down from one end of 7a3, a retaining screw 7a5 is screwed into a female screw 7a4 provided through the vertical piece 7a2, and the escape core 2 is inserted into the through hole 7a6 of the horizontal piece 7a3. The support member 7a is inserted and set to a desired height, and the retaining screw 7a5 is screwed and fastened to the female screw portion 7a4 so that the tip of the retaining screw 7a5 comes into contact with the surface of the escapement core 2 to escape. The support member 7a is fixed to the surface. The guide piece 7a1 hangs down from the other end of the horizontal piece 7a3, and the measuring rod 4 is freely restrained between the guide piece 7a1 and the escape core 2.

  On the other hand, the support member 7b provided on the escape core 3 side has a vertical piece 7b2 standing up from one end of a horizontal piece 7b3 provided with a through hole 7b6 through which the escape core 3 is inserted. The retaining screw 7b5 is screwed into the female screw portion 7b4 provided through, the escape core 3 is inserted into the through hole 7b6 of the horizontal piece 7b3, and the support member 7b is set to a desired height, and the female screw portion By screwing and fastening the retaining screw 7b5 to 7b4, the tip of the retaining screw 7b5 comes into contact with the surface of the escape core 3, and the support member 7b is fixed to the escape core 3. A guide piece 7b1 rises from the other end of the horizontal piece 7b3, and the measuring rod 4 is freely restrained between the guide piece 7b1 and the escape core 3.

  Then, the measuring rod 4 whose center of gravity is on the pile core 1 side with respect to the position of the escape core 3 is brought into contact with the lower surface of each horizontal piece 7a3 and the upper surface of the horizontal piece 7b3 of the support members 7a and 7b. , The measuring rod 4 is stably and freely supported by the support members 7a and 7b.

  3, the support member 7b provided on the relief core 3 side in FIG. 2 is provided on the relief core 2 side in the same manner as described above, and the center of gravity is located closer to the relief core 2 side than the position of the relief core 3. The measuring rod 4 is placed on the upper surface of each horizontal piece 7b3 of the pair of supporting members 7b, so that the measuring rod 4 is stably and freely supported by the pair of supporting members 7b. The support members 7a and 7b can be used in common as shown in FIGS. 2 and 3 by turning upside down.

  The support members 7a and 7b shown in FIGS. 2 and 3 have an open shape, so that the measuring rod 4 can be easily and freely supported from the open end. Further, when the supporting members 7a and 7b shown in FIGS. 2 and 3 are more closed, the measuring rod 4 can be supported more stably and freely movable.

  The measuring bar 4 is provided with a leveling device 9, and the leveling of the measuring bar 4 can be confirmed by viewing the leveling device 9.

  Further, as shown in FIG. 1 (a), indication means 10a, 10b such as lines, indicators, marks, tapes, etc. are provided at portions corresponding to the clearance cores 2, 3 position of the measuring rod 4.

  Further, the position of the pile core 1 can be confirmed using the escape cores 2 and 3 not only before the pile 5 is set up but also during the construction of the pile 5.

  The pile 5 shown in FIG. 1 has shown the ready-made concrete pile or the steel pipe pile, and the spiral blade | wing 5a of at least 1 round is provided in the front-end | tip part outer periphery of the pile 5 main body. In addition to the pile 5 shown in FIG. 1, a straight pile without a spiral blade 5a on the outer periphery of the tip of the pile 5 main body, a drill rod 6 used when excavating the ground G as shown in FIG. As shown in (b), Yatco 8 connected to the upper part of the main pile used when burying the pile is also included.

  In the configuration without the supporting members 7a and 7b, the measuring rod 4 is held horizontally, the one end 4a is applied to the pile core 1, and the other measuring rod 4 is connected to the above-mentioned measuring rod as shown in FIG. One end 4a is applied to the pile core 1 so as to be perpendicular to the rod 4, and the escape core 2 is taken at each other end. One or more relief cores 3 are in contact with the measuring rod 4 between the pile core 1 and the relief core 2.

  Since the escape cores 2 and 3 and the measuring rod 4 use general jigs, they can be managed inexpensively and easily.

  When checking the position of the pile core 1 during the laying of the pile 5 or during the excavation of the ground G using the excavating rod 6 or the laying of the pile 5 using the Yatco 8, the laying or excavation is stopped and the pile in a stationary state 5 or the excavation rod 6 or Yatco 8 is touched with the measuring rod 4 in the same procedure as described above. Thereby, the deviation | shift from the exact pile core 1 position can be confirmed.

  By placing the measuring rod 4 along two or more relief cores 2 and 3, the measuring rod 4 can be applied to the same position.

  In the conventional example, a new pile core management jig is required, but the present invention can confirm the exact pile core 1 position only with the existing jig.

  As an application example of the present invention, it can be applied to a method for confirming a pile core position that uses an existing jig to accurately and easily confirm the pile core position of the pile before and during the building.

(A), (b) is the top view and side view explaining the confirmation method of the pile core position which concerns on this invention. It is a figure which shows the structure of the various support members which support the measuring rod provided in the relief core so that it can move freely. It is a figure which shows the structure of the various support members which support the measuring rod provided in the relief core so that it can move freely. (A) is a side view for explaining a method for confirming a pile core position of an excavating rod for burying a ready-made pile, and (b) is a method for confirming a pile core position of a yatco (employed pile) connected to the upper part of the main pile. FIG. It is a figure explaining a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Pile core 2, 3 ... Relief core 4 ... Measuring rod 4a ... One end part 5 ... Pile 5a ... Spiral blade 6 ... Excavation rod 7a, 7b ... Support member
7a1… Guide piece
7a2… Vertical piece
7a3 ... Horizontal piece
7a4 ... Female thread
7a5 ... Fastening screw
7a6… through hole
7b1… Guide piece
7b2… Vertical piece
7b3… Horizontal piece
7b4 ... Female thread
7b5 ... Fastening screw
7b6 ... Through hole 8 ... Yatco 9 ... Level
10a, 10b ... Instruction means G ... Ground

Claims (5)

The measuring rod is aligned with the relief cores provided at a predetermined plurality of angular directions of the pile core in at least two locations in each direction, the pile or the excavating rod is set on the pile core, and the measuring rod is leveled In this way, the pile core position is confirmed by applying the end of the measuring rod to the pile or excavating rod while adjusting to each of the relief cores. The pile core position confirmation method according to claim 1, wherein a support member is provided on the relief core so as to support the measuring rod so as to be freely movable. The pile core position confirmation method according to claim 1 or 2, wherein a level is provided on the measuring rod. The method for confirming a pile core position according to any one of claims 1 to 3, wherein the measuring rod is provided with instruction means corresponding to the escape core position. The pile core position confirmation method according to any one of claims 1 to 4, wherein the pile core position is confirmed using the relief core during pile erection.

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