JP2014133980A - Guide jig for alignment of steel sheet pile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a guide jig for alignment of a steel sheet pile from being influenced even under a wind by mounting the jig to a fastened, fixed and installed steel sheet pile, and to improve user friendliness by enlarging an opening in such a manner that a claw part of the steel sheet pile to be installed is easily matched to a guide groove portion.SOLUTION: A guide jig 5 for alignment has the substantially same sectional shape as a steel sheet pile including claw parts in both ends. In a guide groove portion 7 corresponding to the claw parts, an opening 9 is enlarged by notching an upper end corner of an outer peripheral wall of the guide groove portion 7. Lock pieces 19, 20 are provided protrusively downwards which are along a top end side surface of an existing steel sheet pile in the case where the guide jig is mounted in the upper end of the existing steel sheet pile so as to extend the steel sheet pile, and a window hole 21 for fastening fitting insertion is formed for fastening and fixing the guide jig by the existing steel sheet pile and a fastening fitting vie one of or a part of the lock pieces.

Description

  In the present invention, a steel sheet pile (sheet pile) used as a structural member used for a retaining wall, a foundation structure, a seawall, a quay wall of a harbor river, and a water barrier wall in the field of civil engineering and construction is run along the ground. In this case, the present invention relates to a steel sheet pile alignment guide jig used when connecting joint portions of steel sheet piles.

  Steel sheet piles (sheet piles) are U-shaped, Z-shaped, straight-line, hat-shaped, etc., as an example, and in civil engineering construction work, the joints are continuously inserted into the ground by fitting them together. A wall.

  FIG. 8 shows an example of a U-shaped steel sheet pile, and the steel sheet pile 1 is provided with claw portions 3 by winding portions as joints at both ends of a U-shaped plate-like portion 2 composed of a web 2a and a flange 2b. .

  As shown in FIG. 9, when steel sheet piles 1 are joined together by connecting the claws 3 of the joints at the end portions in the width direction, and these steel sheet piles 1 are continuously placed in the width direction, The steel sheet pile 1 is lifted by a crane device or the like and sequentially inserted into the ground.

  In this case, first, the position of the steel sheet piles 1 is finely adjusted above the steel sheet piles 2 on which the steel sheet piles 1 to be jointed by the crane operator and the slinging workers are already placed. Positioning is performed so that the positions of the joint portions of each other are exactly the same.

  Thereafter, the steel sheet pile to be placed is slid along the side face of the already-placed steel sheet pile, and the steel sheet pile is inserted into the groove. Repeating this work, steel sheet pile driving work is being carried out.

  However, it is very difficult to accurately match the positions of the joint portions of the steel sheet piles because they are easily affected by wind. In addition, such work depends on the skill of the crane operator and the timing adjustment of the crane operator and the slinging worker, and it has been very difficult to ensure safety and improve work efficiency.

The following patent document is proposed as a jig for aligning sections of a steel sheet pile in a steel sheet pile driving operation at sea or the like.
Japanese Utility Model Publication No. 2-13938

  As shown in FIGS. 10 and 11, this Patent Document 1 is provided with a plate-like body 10 whose cross-sectional shape is the same as the cross-sectional shape of the plate-like portion 2 of the steel sheet pile 1. On the front and rear surfaces of the lower part, four pairs of mounting members 11 and 12 are provided so as to protrude downward, and at both ends of the plate-like body 10, there are connecting windings provided at both ends of the steel sheet pile 1. Only the arcuate guide piece 13 formed in the same shape as the arcuate base part 4 of the claw part 3 by the turning part is provided, and the window holes 14 are provided at three locations on the plate-like body 10.

  As shown in FIG. 12, the steel sheet pile 1 mounted on the already-placed steel sheet pile 1 is aligned, and the steel sheet pile 1 is lowered by aligning the sections of the steel sheet pile 1 to be placed next. It is guided and driven by a road frame 18 arranged in parallel before and after the sheet pile 1.

  In the steel sheet pile section matching jig of Patent Document 1, it is simply placed on the existing steel sheet pile 1, and the mounting members 11 and 12 are opposed to each other and protrude downward. These attachment members 11 and 12 are merely those having a gap for inserting the upper end of the existing steel sheet pile 1, and are not completely fixed and provided with a jig.

  If there is a wind and the steel sheet pile to be driven is swung and shaken greatly, there is a risk of hitting the steel sheet pile section aligning jig and knocking it down. Even if it is going to match the nail | claw part of the steel sheet pile to try, it may not be able to engage easily.

  The object of the present invention is to eliminate the inconvenience of the conventional example, and can be attached to a steel sheet pile that has been tightened and fixed, so that it is not affected even by wind, and the claws of the steel sheet pile to be cast An object of the present invention is to provide a steel sheet pile alignment guide jig whose opening is enlarged so that the portions can be easily aligned.

  In order to achieve the above-mentioned object, the present invention according to claim 1 has substantially the same cross-sectional shape as a steel sheet pile having claw portions at both ends, and the guide groove portion corresponding to the claw portion has an upper end angle of its outer peripheral wall. This is an alignment guide jig that has a large opening by notching the part, and when it is placed on the upper end of an existing steel sheet pile so as to extend, it is attached to the upper end side surface of the existing steel sheet pile And a fastening hole insertion window hole is formed for fastening and fixing with an existing steel sheet pile and a fastening bracket through one or a part of this locking piece. It is what.

  According to the first aspect of the present invention, the positioning guide jig is fastened and fixed by the fastening metal fitting when it is placed so as to extend to the upper end of the existing steel sheet pile. It can be installed, and it will not be affected even if there is a wind and a steel sheet pile that is about to be driven is hit.

  In addition, the upper end corner of the outer peripheral wall of the groove forming portion corresponding to the claw portions at both ends is cut out to enlarge the opening, so that the claw portion on one side of the lower end portion of the steel sheet pile to be placed is related to this. If the steel sheet pile to be driven is lowered after being engaged, it can be directly engaged with the claw portion of the steel sheet pile that has already been driven.

  The gist of the present invention described in claim 2 is that the reinforcing member is connected and fixed so as to straddle the back surface.

  The present invention according to claim 2 can be made robust by having a reinforcing member even if it is a short alignment guide jig, and the reinforcing member is connected so as to straddle the back surface. Because it is fixed, it does not interfere with the guide groove.

  As described above, according to the steel sheet pile alignment guide jig of the present invention, the steel sheet pile can be attached to the steel sheet pile that has been fastened and fixed. Since the opening is enlarged so that the claw portion of the steel sheet pile to be placed can be easily aligned, the use groove portion is easy to use.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a front view showing an embodiment of a steel sheet pile alignment guide jig according to the present invention, FIG. 2 is a side view of the same, FIG. 3 is a plan view of the main part of the same, and FIG. 4 is a rear view of the same. The sheet pile is used in the case of a U-shaped steel sheet pile.

  The U-shaped steel sheet pile will be described first. As shown in FIG. 8, the steel sheet pile 1 includes a claw portion 3 formed by a winding portion as a joint at both ends of a U-shaped plate-like portion 2 composed of a web 2a and a flange 2b. Is provided. Then, as shown in FIG. 9, the steel sheet piles 1 are joined to each other by connecting the claws 3 of the joints at the end portions in the width direction, and the steel sheet piles 1 are connected in the width direction and placed in the ground.

  The alignment guide jig 5 of the present invention has a plate-like portion 6 which is substantially the same cross-sectional shape as the steel sheet pile 1 having the claw portions 3 at both ends and is short in the vertical direction as a main body portion. The plate-like portion 6 has a U shape composed of a web 6a and a flange 6b. In the present embodiment, the flange 6b has a trapezoidal shape in which the front side has the same height and the height increases toward the back with respect to the substantially rectangular web 6a.

  The alignment guide jig 5 can easily obtain the base material by cutting the steel sheet pile 1.

  In this alignment guide jig 5, the guide groove portion 7 corresponding to the claw portion 3 of the steel sheet pile 1 does not have the same cross-sectional shape as that of the claw portion 3 formed by the winding portion. The opening 9 was enlarged by providing a notch 8 having a triangular or square shape at the upper corner.

  More specifically, when the same cross-sectional shape as the claw portion 3 is formed, the claw portion 3 is formed by an inner wall 15 which is a part of the flange 6b, an arcuate base portion 16, and an outer wall 17. However, the inner wall 15 and the arcuate base 16 are left as they are, and the outer wall 17 has a triangular or quadrangular shape that gradually increases in diameter from the upper end downward.

  The other end portion of the alignment guide jig 5 is not shown, but may have the same cross-sectional shape as that of the claw portion 3 or a linear shape with a slight arc-shaped base portion 16 left. It may be a thing.

  Furthermore, it is a guide jig for alignment, and when it is placed so as to extend on the upper end of an existing steel sheet pile, the locking pieces 19 and 20 attached to the upper end side surface of the existing steel sheet pile are directed downward. Projected. These locking pieces 19 and 20 are formed by welding vertically long rectangular pieces and projecting in a claw shape. The locking piece 19 is provided at the lower end on the back side of the web 6a, and the locking piece 20 is provided at the lower side on the back side of the flange 6b.

  In addition, the said locking pieces 19 and 20 may be made into an integrated belt-like thing, and may be made to protrude below like the attachment members 11 and 12 of the said patent document 1. As shown in FIG.

  A window hole 21 for inserting a fastening fitting is formed in the vicinity of the web 6a where the locking piece 19 is provided. Various types of fastening metal fittings 22 can be used, but “Bulman” (registered trademark of Bullman Co., Ltd.), which is used when joining a channel material diagonal material as shown in FIG. There is a clamp type in which a bolt 22b (clamping bolt) is provided on a C-shaped or U-shaped main body 22a.

  In the present embodiment, the window hole 21 is formed as a notched hole that extends downward, but may be a closed hole.

  The alignment guide jig 5 is U-shaped, and the back surface is a concave release surface. The reinforcing member 23 made of an angle member is welded so as to connect and fix the left and right flanges 6b so as to straddle the back surface.

  Next, the use will be described. First, in order to set the alignment guide jig 5 of the present invention, as shown in FIG. 5, it is placed on the steel sheet pile 1 that has been cast so as to extend. At that time, the locking pieces 19 and 20 come into contact with the back side of the upper end of the steel sheet pile 1 that has been cast.

  In this way, the locking piece 19 comes into contact with the web 2a of the steel sheet pile 1, the locking piece 20 comes into contact with the flange 2b of the steel sheet pile 1, and the restriction in the normal direction of the sheet pile and the restriction in the direction perpendicular to the sheet pile normal direction. can get.

  In this way, after the positioning guide jig 5 of the present invention is placed on the steel sheet pile 1 that has been placed, the locking piece 19 and the steel sheet pile 1 that has been placed are tightened by the fastening fitting 22. As a result, the positioning guide jig 5 of the invention is fastened and fixed to the steel sheet pile 1 that has been cast.

  As shown in FIG. 6, if the steel sheet pile 1 to be driven is lowered by engaging the claw portion 3 with the guide groove portion 7 of the alignment guide jig 5, the lower portion of the steel sheet pile 1 has already been driven. It can be made to engage with the claw portion 3 of the steel sheet pile 1.

  Although the above embodiment demonstrated the case where the guide jig 5 for alignment of this invention was used for a U-shaped steel sheet pile, the steel sheet pile of other shapes, such as a hat shape and a linear shape, has a joint by a nail | claw part. On the other hand, the present invention is applicable.

It is a front view which shows one Embodiment of the guide jig for position alignment of the steel sheet pile of this invention. It is a side view which shows one Embodiment of the guide jig for position alignment of the steel sheet pile of this invention. It is a top view of the principal part which shows one Embodiment of the guide jig for position alignment of the steel sheet pile of this invention. It is a rear view which shows one Embodiment of the guide jig for position alignment of the steel sheet pile of this invention. It is a front view which shows the use condition of the guide jig for position alignment of the steel sheet pile of this invention. It is a perspective view which shows the use condition of the guide jig for position alignment of the steel sheet pile of this invention. It is explanatory drawing of the clamp | tightening metal fitting used with the guide jig for position alignment of the steel sheet pile of this invention. It is a top view which shows one example of a U-shaped steel sheet pile. It is a top view which shows the connection state of a U-shaped steel sheet pile. It is a perspective view which shows a prior art example. It is a cross-sectional top view which shows a prior art example. It is a front view which shows a prior art example.

DESCRIPTION OF SYMBOLS 1 ... Steel sheet pile 2 ... Plate-shaped part 2a ... Web 2b ... Flange 3 ... Claw part 4 ... Arc-shaped base 5 ... Positioning guide jig 6 ... Plate-shaped part 6a ... Web 6b ... Flange 7 ... Groove part for guide 8 ... Notch 9 ... Opening 10 ... Plate-like body 11, 12 ... Mounting member 13 ... Arc-shaped guide piece 14 ... Window hole 15 ... Inner side wall 16 ... Arc-shaped base 17 ... Outer wall 18 ... Road frame 19, 20 ... Lock piece 21 ... Window hole 22 ... Fastening bracket 22a ... Main body 22b ... Bolt 23 ... Reinforcing member

Claims (2)

  The guide groove portion corresponding to the claw portion has a substantially the same cross-sectional shape as a steel sheet pile having claw portions at both ends, and is an alignment guide jig having a larger opening by notching the upper end corner portion of the outer peripheral wall. There is a locking piece projecting downward and attached to the upper end side surface of the existing steel sheet pile when it is placed so as to extend to the upper end of the existing steel sheet pile. A guide jig for positioning a steel sheet pile, wherein a window hole for fastening metal fitting is formed to be fastened and fixed by an existing steel sheet pile and a fastening metal fitting through one or a part thereof.   The steel sheet pile alignment guide jig according to claim 1, wherein the reinforcing member is connected and fixed so as to straddle the back surface.

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