JP6119879B2 - Combined steel sheet pile installation jig and combined steel sheet pile installation method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a combined steel sheet pile connecting jig and a combined steel sheet pile connecting method.
This application claims priority on January 14, 2014 based on Japanese Patent Application No. 2014-004311 for which it applied to Japan, and uses the content here.

  Conventionally, in the field of civil engineering and construction, U-shaped, Z-shaped, straight, or hat-shaped steel sheet piles have been used to construct earth retaining walls or river revetments that prevent collapse of earth and sand. It has been. Also, in civil engineering construction work, a continuous wall (wall body) consisting of multiple steel sheet piles is constructed by placing multiple steel sheet piles in the ground while fitting their fitting parts together. Is done. Here, as a general method for increasing the structural strength of the wall body, a method of increasing the cross-sectional performance by increasing the cross-sectional size of the steel sheet pile, or H steel or CT steel as the main structural member for the steel sheet pile There is a method using a combined steel sheet pile.

  For example, a combined steel sheet pile in which H-shaped steel is combined with a hat-shaped steel sheet pile as a main structural member is used for construction of a continuous wall (see Patent Documents 1 to 3). Combined steel sheet piles are not only large in bending rigidity and bending strength, but are also difficult to bend against external forces such as earth pressure or water pressure acting in the direction perpendicular to the length direction (placement direction). Even if it is used, it can resist external force. For this reason, the combination steel sheet pile has been frequently used as a retaining wall supported by an anchor or a beam or a self-supporting retaining wall.

  Here, for example, when a combination steel sheet pile is used as a retaining wall using a cut beam in order to excavate the ground in the land and build a box culvert made of reinforced concrete, the underground below the bottom of the excavation The earth retaining wall portion tends to have a smaller bending moment acting on the earth retaining wall than the front excavated earth retaining wall portion above the excavation bottom surface. Therefore, in order to reduce the manufacturing cost of the combined steel sheet pile, the main structural member and a hat-shaped steel sheet pile having a length shorter than the length of the main structural member are used. A combination steel sheet pile combined so as to be disposed above the lower end of the structural member may be used. In this case, the hat-shaped steel sheet pile and the main structural member resist the load at the front excavation earth retaining wall, and only the main structural member resists the load at the underground earth retaining wall.

Japanese Laid-Open Patent Publication No. 2002-212943 Japanese Laid-Open Patent Publication No. 2013-019245 Japanese Unexamined Patent Publication No. 2009-019372

  When a continuous wall is constructed by connecting a plurality of such steel sheet pile lengths (the length of the steel sheet piles) in the ground from the ground surface of the local ground (GL), a combination steel sheet pile shorter than the length of the main structural member, In the conventional method, a plurality of steel sheet piles are sequentially driven while fitting the fitting portion of the combined steel sheet pile to be placed next in the aerial part to the fitting portion of the combined steel sheet pile previously placed. . Hereinafter, a conventional method for forming a continuous wall by connecting a plurality of combination steel sheet piles in the ground from the ground surface of the local board will be described with reference to FIGS. 22A to 22D.

  In the conventional method, first, as shown in FIG. 22A, the combined steel sheet pile 1 is driven halfway with a driving machine. Thereafter, as shown in FIG. 22B, the fitting portion 14 of the combined steel sheet pile 1X to be placed next is fitted from above the fitting portion 14 (joint portion) of the combined steel sheet pile 1. Under the present circumstances, the scaffolding 60 is installed so that the combination steel sheet pile 1 may be adjoined, and the fitting parts 14 of the combination steel sheet pile 1 and the combination steel sheet pile 1X are fitted.

  Next, as shown in FIG. 22C, while the fitting portion 14 of the combined steel sheet pile 1X is fitted to the fitting portion 14 of the combined steel sheet pile 1, the combined steel sheet pile 1X is driven halfway with a driving machine. Set up. Thereafter, as shown in FIG. 22D, the scaffold 60 is moved so as to be adjacent to the combined steel sheet pile 1X, and the combined steel sheet pile 1Y to be placed next is connected to the fitting portion 14 of the combined steel sheet pile 1Y. While being fitted to the 1X fitting portion 14, it is driven by a driving machine halfway into the ground. 22A to 22D are repeated, and after a predetermined number of combined steel sheet piles are driven, these combined steel sheet piles are finally driven to a predetermined depth in the ground.

  As described above, in the conventional method, a plurality of combined steel sheet piles are driven halfway into the ground and provided in a panel shape, and finally, the plurality of combined steel sheet piles are finally driven into the ground to a predetermined depth. There is a need to. Therefore, it is necessary to sequentially drive a plurality of combination steel sheet piles to a predetermined depth while moving the placing machine again after sequentially placing a plurality of combined steel sheet piles in the ground while moving the placing machine. . That is, it is necessary to drive a plurality of combined steel sheet piles in two stages with a driving machine, and there is a problem in that the labor for continuous installation increases.

  The present invention has been made in view of the above circumstances, and provides a combined steel sheet pile connecting jig and a combined steel sheet pile connecting method capable of improving the efficiency of connecting a plurality of combined steel sheet piles. For the purpose.

In order to solve the above problems, the present invention employs the following.
(1) A combined steel sheet pile connecting jig according to an aspect of the present invention includes a plurality of combined steel sheet piles having a pair of parallel arm portions and fitting portions provided on each of the arm portions. Is a jig that is used by being attached to the upper edge of the combined steel sheet pile when connecting the fitting parts together, and the pair of guide parts having the same shape as the fitting parts; A first positioning portion that is slidably contacted with the arm portion in the alignment direction of the pair of arm portions; and the relative position with the fitting portion is matched by moving the guide portion along the alignment direction. A second positioning portion that restricts further movement of the guide portion; and an abutting portion that abuts against the upper edge.
(2) In the aspect described in (1) above, a first notch portion provided at an upper end portion of the guide portion and having an abutting surface that comes into contact with the fitting portion may be further provided. .
(3) In the aspect described in the above (2), the first notch portion further includes a pair of guide surfaces that extend so as to spread around the abutting surface with the abutting surface interposed therebetween. You may do it.
(4) In the aspect according to any one of (1) to (3), the end portion of the contact portion may include a second notch portion.
(5) In the aspect described in any one of (1) to (4) above, the configuration may be as follows: the first positioning portion and the second positioning portion are in contact with each other. Projecting downward in the vertical direction from the lower edge of the part, and the projecting length of the first positioning part is longer than the projecting length of the second positioning part.
(6) In the aspect described in any one of (1) to (4) above, the configuration may be as follows: the first positioning portion and the second positioning portion are in contact with each other. Projecting downward in the vertical direction from the lower edge of the part, and the projecting length of the first positioning part is shorter than the projecting length of the second positioning part.
(7) In the aspect according to any one of (1) to (6), a fixing portion that is fixed to the combined steel sheet pile may be further provided.
(8) A combined steel sheet pile connecting method according to another aspect of the present invention uses the combined steel sheet pile connecting jig according to any one of (1) to (7) above, and the combined steel. A method of arranging a plurality of sheet piles, the first placing step of placing the combined steel sheet pile; and the first arm portion of the combined steel sheet pile after the first placing step. A positioning step in which the second positioning portion is moved until the movement of the guide portion is restricted while the positioning portion is in sliding contact, and then the abutting portion is brought into contact with the upper edge; Later, the other combined steel sheet pile is placed while the fitting portion of the other combined steel sheet pile is fitted to the guide portion and then to the fitting portion of the other combined steel sheet pile. 2 placing steps;

  According to the combined steel sheet pile connecting jig described in the above (1), the arm portion has the first positioning portion that is in sliding contact with the pair of arm portions along the arrangement direction of the pair of arm portions. The guide portion can be moved along the alignment direction of the arm portions while matching the relative position of the guide portion to the fitting portion in a direction perpendicular to the alignment direction. Moreover, since it has the 2nd positioning part which controls the movement of the guide part along the arrangement direction of an arm part, the guide part can be positioned with respect to a fitting part in the arrangement direction of an arm part. Moreover, since it has the contact part contact | abutted with respect to the upper edge of a combination steel sheet pile, it can position the guide part with respect to a fitting part in a perpendicular direction. As described above, since the combined steel sheet pile connecting jig can be attached to the combined steel sheet pile so that the guide portion having the same shape as the fitting portion is connected to the fitting portion, the length of the fitting portion is extended. Can do. As a result, even when a combined steel sheet pile in which the main structural member protrudes from one end of the steel sheet pile is used, it is not necessary to drive the combined steel sheet pile in two stages when connecting the combined steel sheet piles. The sheet pile connection work can be performed efficiently.

  In the case of (2) above, since the first cutout portion is provided at the upper end portion of the guide portion and has an abutting surface that contacts the fitting portion, the fitting portion is moved from the side of the guide portion. And can be brought into contact with the abutting surface. Therefore, the fitting part can be aligned with the guide part by moving the fitting part from the side of the guide part. Therefore, since it is not necessary to use a scaffold when performing the continuous work of the combined steel sheet piles, the continuous work of the combined steel sheet piles can be performed more efficiently.

  In the case of (3) above, since the first notch has a pair of guide surfaces extending so that the abutting surface is sandwiched between them and the abutting surface is the center, the fitting portion is brought into contact with the abutting surface. When contacting, the fitting portion is guided to the abutting surface by the pair of guide surfaces. Therefore, since the fitting part can be smoothly brought into contact with the abutting surface, the continuous work of the combined steel sheet piles can be performed more efficiently.

  In the case of the above (4), since the end of the contact portion has the second notch, the width of the contact portion can be made smaller than the width of the combined steel sheet pile. Therefore, when the jig for connecting a combined steel sheet pile is attached to the combined steel sheet pile, even if the combined steel sheet pile previously placed does not reach the target placement depth, the contact portion is placed first. Interference with the combined steel sheet pile can be avoided.

  In the case of (5) above, since the protruding length of the first positioning portion is longer than the protruding length of the second positioning portion, when the first positioning portion is brought into sliding contact with the pair of arm portions, the second positioning portion Can be prevented from interfering with the upper edge of the combined steel sheet pile. Therefore, the alignment of the guide portion and the fitting portion is facilitated, and the combined work of the combined steel sheet piles can be performed more efficiently.

  In the case of (6) above, since the protruding length of the first positioning portion is shorter than the protruding length of the second positioning portion, the combined steel sheet pile connection is made before the first positioning portion is brought into sliding contact with the pair of arm portions. The installation jig can be arranged at a position where the second positioning portion does not interfere with the upper edge of the combined steel sheet pile. Therefore, when the 1st positioning part is slidably contacted with a pair of arm part, it can avoid that a 2nd positioning part interferes with the upper edge of a combination steel sheet pile. Therefore, the alignment of the guide portion and the fitting portion is facilitated, and the combined work of the combined steel sheet piles can be performed more efficiently.

  In the case of (7) above, since the fixed steel sheet pile is fixed to the combined steel sheet pile, the combined steel sheet pile is generated due to the frictional resistance of the guide portion when connecting the fitting portions of the multiple combined steel sheet piles. It is possible to prevent the position of the guide portion from being displaced.

  According to the combined steel sheet pile connecting method described in (8) above, the movement of the guide portion is regulated by the second positioning portion while the first positioning portion is in sliding contact with the arm portion of the combined steel sheet pile. Since the contact part is brought into contact with the upper edge of the combined steel sheet pile after being moved, the jig for connecting the combined steel sheet piles is attached to the combined steel sheet pile so that the guide part and the fitting part are connected. Can do. Therefore, the length of the fitting part can be extended. Therefore, even if it uses the combination steel sheet pile from which the main structural member protrudes from the end of a steel sheet pile, the continuous work of a combination steel sheet pile can be performed efficiently.

It is a schematic perspective view which shows the state which attached to the combination steel sheet pile the jig for combined steel sheet pile connection concerning 1st Embodiment of this invention. It is a top view which shows a combination steel sheet pile. It is a front view which shows a combination steel sheet pile. It is a front view which shows the jig | tool for continuous steel sheet pile installation based on 1st Embodiment of this invention. It is AA sectional drawing of FIG. 3, Comprising: It is a figure which shows the jig for combined steel sheet pile continuous connection which concerns on 1st Embodiment of this invention. It is BB sectional drawing of FIG. 3, Comprising: It is a figure which shows the jig for combined steel sheet pile connection concerning 1st Embodiment of this invention. It is CC sectional drawing of FIG. 3, Comprising: It is a figure which shows the jig for combined steel sheet pile connection concerning 1st Embodiment of this invention. It is the figure seen from the D direction of FIG. 3, Comprising: It is a figure which shows a pair of 1st guide plate. It is a front view which shows the state which attached the jig for combined steel sheet pile connection concerning 1st Embodiment of this invention to the combined steel sheet pile. It is a figure for demonstrating the method to attach the combination steel sheet pile connection jig | tool which concerns on 1st Embodiment of this invention to a combination steel sheet pile. It is a figure for demonstrating the method to attach the combination steel sheet pile connection jig | tool which concerns on 1st Embodiment of this invention to a combination steel sheet pile. It is a figure for demonstrating the method to attach the combination steel sheet pile connection jig | tool which concerns on 1st Embodiment of this invention to a combination steel sheet pile. It is EE sectional drawing of FIG. 7C, Comprising: It is a figure which shows the state which attached to the combination steel sheet pile the jig for combined steel sheet pile connection which concerns on 1st Embodiment of this invention. It is a partial expanded side view of the jig for combined steel sheet pile connection arrangement concerning a 1st embodiment of the present invention. It is a figure for demonstrating the method to drive a some combination steel sheet pile using the combination steel sheet pile installation jig | tool which concerns on 1st Embodiment of this invention. It is a figure for demonstrating the method to drive a some combination steel sheet pile using the combination steel sheet pile installation jig | tool which concerns on 1st Embodiment of this invention. It is a figure for demonstrating the method to drive a some combination steel sheet pile using the combination steel sheet pile installation jig | tool which concerns on 1st Embodiment of this invention. It is a top view which shows the combination steel sheet pile installation jig | tool which concerns on 1st Embodiment of this invention, Comprising: It is a figure which shows the state which made the fitting part of the combination steel sheet pile contact | abut on the abutting surface. It is a side view which shows a combination steel sheet pile, a conducting frame, and a spacer. It is a figure for demonstrating the method to drive a some combination steel sheet pile using the combination steel sheet pile connection jig | tool which concerns on 1st Embodiment of this invention. It is a figure for demonstrating the method to drive a some combination steel sheet pile using the combination steel sheet pile connection jig | tool which concerns on 1st Embodiment of this invention. It is a figure for demonstrating the method to drive a some combination steel sheet pile using the combination steel sheet pile connection jig | tool which concerns on 1st Embodiment of this invention. It is a figure for demonstrating the method to drive a some combination steel sheet pile using the combination steel sheet pile connection jig | tool which concerns on 1st Embodiment of this invention. It is a front view which shows the modification of the jig for combined steel sheet pile connection concerning 1st Embodiment of this invention. It is FF sectional drawing of FIG. 14A. It is CC sectional drawing of FIG. 3, Comprising: It is a figure which shows the modification of the jig | tool for combined steel sheet pile connection concerning 1st Embodiment of this invention. It is CC sectional drawing of FIG. 3, Comprising: It is a figure which shows the modification of the jig | tool for combined steel sheet pile connection concerning 1st Embodiment of this invention. It is a front view which shows the jig for combined steel sheet pile connection concerning 2nd Embodiment of this invention. It is the elements on larger scale which show the jig for combined steel sheet pile connection arrangement concerning a 2nd embodiment of the present invention. It is GG sectional drawing of FIG. 18A. It is a figure for demonstrating the method to attach the combination steel sheet pile connection jig | tool which concerns on 2nd Embodiment of this invention to a combination steel sheet pile. It is a figure for demonstrating the method to attach the combination steel sheet pile connection jig | tool which concerns on 2nd Embodiment of this invention to a combination steel sheet pile. It is a figure for demonstrating the method to attach the combination steel sheet pile connection jig | tool which concerns on 2nd Embodiment of this invention to a combination steel sheet pile. It is a front view which shows the jig for combined steel sheet pile connection concerning 3rd Embodiment of this invention. It is the elements on larger scale which show the jig for combined steel sheet pile connection arrangement concerning a 3rd embodiment of the present invention. It is HH sectional drawing of FIG. 21A. It is a figure for demonstrating the method to drive the conventional some combination steel sheet pile. It is a figure for demonstrating the method to drive the conventional some combination steel sheet pile. It is a figure for demonstrating the method to drive the conventional some combination steel sheet pile. It is a figure for demonstrating the method to drive the conventional some combination steel sheet pile.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

(First embodiment)
First, the combined steel sheet pile connecting jig 100 according to the first embodiment of the present invention will be described. FIG. 1 is a schematic perspective view showing a combined steel sheet pile connecting jig 100 according to the present embodiment. As shown in FIG. 1, the combined steel sheet pile connecting jig 100 is attached to the upper end (upper edge) of the steel sheet pile 10 of the combined steel sheet pile 1 when the continuous wall 5 is constructed in the ground. The continuous wall 5 is formed by placing a plurality of combined steel sheet piles 1 in the ground while fitting the fitting portions 14 together.
In FIG. 1, the X direction indicates the wall body direction (width direction), the Y direction indicates the height direction (the material axis direction, the direction in which the combined steel sheet pile is driven, or the vertical direction), and the Z direction is The direction orthogonal to the wall direction X is shown. Reference sign GL indicates the ground.

  FIG. 2A is a plan view showing the combined steel sheet pile 1 and FIG. 2B is a front view showing the combined steel sheet pile 1. As shown to FIG. 2A, the combination steel sheet pile 1 is comprised from the hat-shaped steel sheet pile 10 (steel sheet pile) and the H-section steel 20 (main structural member). In the combined steel sheet pile 1, the H-section steel sheet pile 10 and the H-section steel 20 are combined by fixing the H-section steel 20 to the rear surface of the web portion 11 of the hat-shaped steel sheet pile 10 by welding or the like. In the following, as shown in FIG. 2A, the surface of the web portion 11 in the Z direction where the H-section steel 20 is welded is referred to as the back side (outside), and the other side is the front side (inside ). Hereinafter, the same applies to all the drawings in this specification.

The hat-shaped steel sheet pile 10 includes a web portion 11, a pair of flange portions 12 provided at both ends of the web portion 11, a pair of arm portions 13 provided at the end portions of the pair of flange portions 12, It has a pair of fitting part 14 (joint part) provided in the edge part of a pair of arm part 13, respectively. The pair of arm portions 13 are parallel to each other and are aligned along the X direction.
The H-section steel 20 has a web portion 22 and a pair of flange portions 21 provided at both ends of the web portion 22.

  Moreover, as shown to FIG. 2B, in the combination steel sheet pile 1, the lower end position of the hat-shaped steel sheet pile 10 is arrange | positioned above the lower end position of the H-section steel 20 (Y direction upper side), and the H-section steel 20 is It protrudes from the lower end of the hat-shaped steel sheet pile 10 downward (Y direction lower side) with a protruding length L1. The protruding length L1 is, for example, 50 cm to 5 m.

  FIG. 3 is a front view showing the combined steel sheet pile continuous jig 100. As shown in FIG. 3, the combined steel sheet pile connecting jig 100 includes a jig body 110, a first guide plate 150, a second guide plate 160, and a third guide plate 170. The first guide plate 150, the second guide plate 160, and the third guide plate 170 are provided at the contact portion 116 (lower end portion) of the jig main body 110, and the Y from the lower end 116 a (lower edge) of the contact portion 116. Projects downward in the direction. In the present embodiment, the protruding lengths of the first guide plate 150, the second guide plate 160, and the third guide plate 170 are the same, for example, 100 mm.

  The jig body 110 includes a web part 111, a pair of flange parts 112 provided at both ends of the web part 111, a pair of arm parts 113 provided at the end parts of the pair of flange parts 112, and the pair. And a pair of guide portions 114 provided at the end portions of the arm portions 113 respectively. The planar shape of the jig body 110 is the same as the shape of the steel sheet pile 10 used for the combined steel sheet pile 1. The “same shape” means that the shape of the cross section of the jig body 110 (cross section parallel to the X direction in FIG. 3) is the same as the shape of the cross section of the steel sheet pile 10 used for the combined steel sheet pile 1. It means that there is.

  That is, in the jig body 110, the web part 111, the flange part 112, the arm part 113, and the guide part 114 are respectively the web part 11, the flange part 12, and the arm part 13 of the steel sheet pile 10 used for the combined steel sheet pile 1. And the same shape as the fitting portion 14.

  The pair of arm portions 113 of the jig main body 110 are parallel to each other and are aligned along the X direction. In addition, for example, one suspension hole 111 a used for lifting the combined steel sheet pile connecting jig 100 is provided at the upper end portion of the web portion 111 of the jig body 110. When the combined steel sheet pile connecting jig 100 is lifted, the combined steel sheet pile connecting jig 100 can be lifted by a machine such as a winch by passing a wire or a hook through the suspension hole 111a. The suspension hole 111a may be provided in the flange portion 112 or the arm portion 113. However, a straight line passing through the center of gravity of the combined steel sheet pile connecting jig 100 and parallel to the length direction of the jig body 110 so that the jig body 110 is not inclined with respect to the Y direction when the jig body 110 is suspended. Above, it is preferable that the suspension hole 111a is provided at a position closer to the upper end of the jig body 110 than the center of gravity.

  In addition, the jig main body 110 should just be the same as the shape of the hat-shaped steel sheet pile 10 used for the combination steel sheet pile 1. That is, according to the hat-shaped steel sheet pile 10 used for the combined steel sheet pile 1, for example, a hat-shaped steel sheet pile manufactured by integral hot rolling or cold forming may be used as the jig body 110, A hat-shaped steel sheet pile in which two Z-shaped steel sheet piles manufactured in a hot rolling or cold forming process are fitted to each other and fixed by welding or caulking may be used as the jig body 110.

  When the combined steel sheet pile connecting jig 100 is attached to the combined steel sheet pile 1, the lower end 116a (lower edge) of the contact portion 116 of the jig main body 110 contacts the upper end 15a (upper edge) of the steel sheet pile 10. . For this reason, the position in the Y direction of the combined steel sheet pile connecting jig 100 with respect to the combined steel sheet pile 1 is determined.

  The jig body 110 has a notch 120 (first notch) formed by notching one upper end portion of the pair of guide portions 114 toward the side (X direction). The length L2 of the notch 120 in the Y direction is, for example, about 50 cm to 1 m.

  In addition, the jig main body 110 has a pair of arm portions 113 with a lower end portion (an end portion of the contact portion 116) of the arm portion 113 on the opposite side to the notch portion 120 cut out sideways. It has the notch part 130 (2nd notch part) formed. The length in the Y direction of the notch 130 is, for example, about 50 cm to 1 m.

  4A is a cross-sectional view taken along the line AA in FIG. 3, and FIG. 4B is a cross-sectional view taken along the line BB in FIG. As shown in FIGS. 4A and 4B, the notch 120 is formed by notching the guide 114 so that the inner surface 114a of the guide 114 is exposed in the X direction. Then, a pair of fourth guide plates 121 are provided in the notch 120 so that each guide surface 121a spreads around the inner surface 120a with the inner surface 120a (butting surface) of the notch 120 interposed therebetween. It has been. The pair of fourth guide plates 121 are fixed to the notch 120 by fillet welding or the like. That is, the welded portion 123 is provided in the fourth guide plate 121 and the cutout portion 120. In addition, it is preferable that a pair of 4th guide plate 121 and the notch part 120 form V shape, when the jig | tool 100 for combined steel sheet pile connection arrangement is planarly viewed.

  The fourth guide plate 121 is made of, for example, a steel plate having a plate thickness of 9 mm, a width of 100 to 200 mm, and a length that is approximately the same as the length L2 of the notch 120. The fourth guide plate 121 may be a single steel plate, a bent steel plate (folded plate), or two or more welded so that the crossing angle becomes an obtuse angle. A steel plate may be used.

4C is a cross-sectional view taken along the line CC of FIG. As shown in FIG. 4C, in the contact portion 116 of the jig main body 110, the pair of first guide plates 150 (first positioning portions) are protruded from the arm portion 113 to both sides in the Z direction. Each of the sections 113 is provided. The pair of first guide plates 150 are fixed to the arm portion 113 by fillet welding or the like.
FIG. 5 is a side view seen from the direction D of FIG. 3 and shows a pair of first guide plates 150. As shown in FIG. 5, the pair of first guide plates 150 protrude from the lower end 116 a of the contact portion 116 toward the lower side in the Y direction, and the combined steel sheet pile connecting jig 100 is attached to the combined steel sheet pile 1. At the time of attachment, the arm portion 13 of the steel sheet pile 10 is sandwiched (slidably contacted). As a result, the position of the jig body 110 in the Z direction with respect to the steel sheet pile 10 is determined.
The number of the pair of first guide plates 150 is not limited to two, but may be one or three or more.

  Further, as shown in FIG. 4C, a second guide plate 160 (second positioning portion) is provided on the guide portion 114 at the contact portion 116 of the jig main body 110. The second guide plate 160 is fixed to the corner portion of the C-shaped curved portion 114b of the guide portion 114 by fillet welding or the like, and, like the first guide plate 150, from the lower end 116a of the contact portion 116 in the Y direction. It protrudes downward (see FIG. 3). The second guide plate 160 contacts the fitting portion 14 of the steel sheet pile 10 when the combined steel sheet pile connecting jig 100 is attached to the combined steel sheet pile 1. As a result, the position of the jig body 110 in the X direction with respect to the steel sheet pile 10 is determined.

  Further, as shown in FIG. 4C, in the contact portion 116 of the jig main body 110, three third guide plates 170 (third positioning portions) are provided on the web portion 111 and the pair of flange portions 112. . The third guide plate 170 is fixed to the front side of the web portion 111 and the back side of the pair of flange portions 112 by fillet welding or the like, and is similar to the first guide plate 150 and the second guide plate 160. It protrudes downward in the Y direction from the lower end 116a of the contact portion 116 (see FIG. 3). Further, the third guide plate 170 sandwiches the web portion 11 and the flange portion 12 of the steel sheet pile 10 when the combined steel sheet pile connecting jig 100 is attached to the combined steel sheet pile 1. As a result, the positions of the jig body 110 in the X direction and the Z direction with respect to the steel sheet pile 10 are determined.

  The first guide plate 150, the second guide plate 160, and the third guide plate 170 are each made of, for example, a steel plate having a width of 50 mm, a plate thickness of 9 mm, and a total length of 200 mm.

As shown in FIG. 5, the upper portion 150a of the first guide plate 150 is fixed to the contact portion 116 by welding or the like, and the lower portion 150b of the first guide plate 150 protrudes downward from the lower end 116a of the contact portion 116 in the Y direction. ing. The length of the upper part 150a of the first guide plate 150 is, for example, 100 mm. A taper 150d having a length of, for example, 30 to 50 mm is provided at a lower end portion of the lower portion 150b of the first guide plate 150. By providing the taper 150d in this manner, the mounting work of the combined steel sheet pile connecting jig 100 to the steel sheet pile 10 can be facilitated. Further, when the combined steel sheet pile connecting jig 100 is attached to the combined steel sheet pile 1 between the upper portion 150a and the lower portion 150b of the first guide plate 150, the side end face of the lower portion 150b of the first guide plate 150 is provided. A step 150 c is provided so that a gap d in the Z direction is generated between 150 e and the side surface 10 a of the steel sheet pile 10.
The second guide plate 160 and the third guide plate 170 have the same shape as the first guide plate 150.

  In the first guide plate 150 and the second guide plate 160, the gap d is relatively narrow, for example, 1 mm or more and 2 mm or less. On the other hand, in the third guide plate 170, the gap d is relatively wide, for example, not less than 2 mm and not more than 5 mm.

FIG. 6 is a front view showing a state in which the combined steel sheet pile connecting jig 100 is attached to the combined steel sheet pile 1 placed in the ground. As will be described later, the combined steel sheet pile connecting jig 100 is attached to the upper end of the steel sheet pile 10 of the combined steel sheet pile 1 so that the guide portion 114 and the fitting portion 14 overlap when viewed from the Y direction. . Here, the total length L [m] of the jig body 110 is determined so as to satisfy the following expression (1).
L ≧ L1 + L2−L3 (1)
In addition, L1 is the protrusion length [m] of the H-section steel 20 of the combined steel sheet pile 1, L2 is the notch length [m] of the notch 120, and L3 is the combination steel sheet pile 1 from the ground GL. Projection length [m]. That is, when the protrusion length L1 is 3 m, the notch length L2 is 0.5 m, and the protrusion length L3 is 1 m, the overall length L of the jig body 110 may be 2.5 m or more.

[Combined steel sheet pile installation method]
Next, a method for connecting a plurality of combined steel sheet piles 1 in the ground using the combined steel sheet pile connecting jig 100 according to the present embodiment will be described.

  When connecting a plurality of combination steel sheet piles 1 in the ground, the combination steel sheet piles 1 are first placed in the ground. At this time, when the combined steel sheet pile 1 is driven, it is preferable that the upper end portion of the web portion 22 of the H-shaped steel 20 is gripped with a chuck of a vibro hammer. Next, the combined steel sheet pile continuous jig 100 is attached to the combined steel sheet pile 1. 7A to 7C are diagrams for explaining a method of attaching the combined steel sheet pile connecting jig 100 to the combined steel sheet pile 1 and showing the combined steel sheet pile connecting jig 100 and the combined steel sheet pile 1. It is a front view. First, as shown in FIG. 7A, a wire is hooked on the suspension hole 111a, and the combined steel sheet pile connecting jig 100 is lifted. Then, the combined steel sheet pile connecting jig 100 is moved above the steel sheet pile 10 placed in the ground so that the first guide plate 150, the second guide plate 160, and the third guide plate 170 become the steel sheet pile 10. The combined steel sheet pile connecting jig 100 is lowered to a position not in contact with the upper end of the steel sheet.

  Next, as shown in FIG. 7B, the pair of first guide plates 150 sandwich the arm portion 13 of the steel sheet pile 10 and the three third guide plates 170 sandwich the flange portion 12 and the web portion 11 of the steel sheet pile 10. In this way, the combined steel sheet pile connecting jig 100 is further lowered to a position where the lower end of the contact portion 116 does not contact the upper end of the steel sheet pile 10. Thereafter, the combined steel sheet pile connecting jig 100 is moved in the X direction until the second guide plate 160 contacts the steel sheet pile 10. At this time, as described above, a relatively wide gap d of about 2 mm or more and 5 mm or less is provided between the third guide plate 170 and the steel sheet pile 10, and the first guide plate 150 and the steel sheet pile 10 And between the second guide plate 160 and the steel sheet pile 10, a relatively narrow gap d of about 1 mm or more and 2 mm or less is provided (see FIG. 5), so that the second guide plate 160 is a steel sheet pile. The combined steel sheet pile connecting jig 100 can be moved along the X direction (along the alignment direction of the pair of arm portions 13 of the steel sheet pile 10) until it abuts against the steel sheet 10. When the operation shown in FIG. 7B is completed, the alignment of the guide portion 114 of the combined steel sheet pile connecting jig 100 with the fitting portion 14 of the steel sheet pile 10 in the X and Z directions is completed.

  Next, as shown in FIG. 7C, the combined steel sheet pile connecting jig 100 is moved downward in the Y direction until the lower end of the contact portion 116 contacts the upper end of the steel sheet pile 10. Thereafter, the uprightness of the combined steel sheet pile connecting jig 100 in the Y direction, the positional deviation of the combined steel sheet pile connecting jig 100 in the X direction, and the combined steel sheet pile connecting jig 100 and the combined steel sheet pile 1 After confirming that the bending angle is small, the lower part (projecting part) of the third guide plate 170 is fixed to the steel sheet pile 10 by spot welding or fillet welding.

  FIG. 8 is a cross-sectional view taken along line EE in FIG. 7C. As shown in FIG. 8, the combined steel sheet pile connecting jig 100 is fixed to the steel sheet pile 10 by spot welding or fillet welding of the lower part of the third guide plate 170 to the steel sheet pile 10. The That is, a welded portion 172 (fixed portion) is provided below the third guide plate 170. Therefore, the position shift of the guide part 114 of the combined steel sheet pile connecting jig 100 with respect to the fitting part 14 of the steel sheet pile 10 can be prevented. In addition, you may fix the 3rd guide plate 170 and the steel sheet pile 10 using a volt | bolt instead of welding.

  As shown in FIG. 9, when the distance between the side end surface 160e of the lower portion 160b and the fitting portion 14 of the steel sheet pile 10 is greatly different in the Y direction, the second guide plate 160 is a combined steel sheet pile connecting jig. Since a bend angle occurs between 100 and the combined steel sheet pile 1, the joint resistance at the time of placing becomes excessive. For this reason, using methods, such as putting a thin steel plate in the upper end part 15 of the steel sheet pile 10, or putting a weld bead, between the fitting part 14 of the steel sheet pile 10 and the side end surface 160e of the 2nd guide plate 160 is used. It is desirable that the distance be constant in the Y direction.

  7A to 7C, the guide portion 114 of the combined steel sheet pile connecting jig 100 and the fitting portion 14 of the steel sheet pile 10 can be overlapped when viewed from the Y direction. As a result, The length of the fitting part 14 of the steel sheet pile 10 can be extended in the Y direction.

  Here, in the combined steel sheet pile 1 in which the steel sheet pile 10 and the H-section steel 20 are joined by welding, variations occur in the full width (distance between fitting portions) of the steel sheet pile 10. As a result of conducting the welding test of the combined steel sheet pile 1, when the sum of the weld lengths is 60% of the steel sheet pile length, the steel sheet pile 10 is caused by heat input by welding, shrinkage during cooling of the weld metal, and the like. It has been found that the total width of the sheet spreads by an average of about 3 to 5 mm after the welding process, and the accuracy varies within a range of about 1 to 2 mm.

  However, in the method for attaching the combined steel sheet pile connecting jig 100 shown in FIGS. 7A to 7C, it is utilized that the pair of arm portions 13 of the steel sheet pile 10 are formed in a straight line along the X direction. Thus, the combined steel sheet pile connecting jig 100 is allowed to move only in the X direction. Therefore, even when the above-described variation occurs in the combined steel sheet pile 1, when the fitting portion 14 of the steel sheet pile 10 and the guide portion 114 of the combined steel sheet pile connecting jig 100 are viewed from the Y direction. The combined steel sheet pile connecting jig 100 can be attached to the steel sheet pile 10 so as to overlap.

  FIGS. 10A to 10C illustrate a method of placing the combined steel sheet pile 1X to be placed next to the previously placed combined steel sheet pile 1 after the work shown in FIGS. 7A to 7C. It is a figure for doing, Comprising: It is a front view which shows the jig | tool 100 for combination steel sheet pile connection, the combination steel sheet pile 1, and the combination steel sheet pile 1X. First, the combined steel sheet pile 1X is lifted by a crane or the like so that the lower end of the combined steel sheet pile 1X is positioned between the upper end and the lower end of the fourth guide plate 121 of the combined steel sheet pile connecting jig 100. 10A, the combined steel sheet pile 1X is moved in the X direction, and the fitting portion 14 of the combined steel sheet pile 1X is placed in a space 122 (see FIG. 11) sandwiched between the pair of fourth guide plates 121. insert.

  FIG. 11 is a view of the state shown in FIG. 10A as viewed from above in the Y direction, and shows the combined steel sheet pile connecting jig 100 and the combined steel sheet pile 1X. As shown in FIG. 11, the combined steel sheet pile 1X is moved in the X direction until the fitting portion 14 of the combined steel sheet pile 1X abuts against the abutting surface 120a of the notch 120 of the combined steel sheet pile connecting jig 100. Let When the fitting portion 14 of the combined steel sheet pile 1X comes into contact with the abutment surface 120a of the combined steel sheet pile connecting jig 100, the combined steel sheet pile 1X of the combined steel sheet pile connecting jig 100 with respect to the guide portion 114 is arranged. The position of the fitting part 14 in the X and Z directions is determined. At this time, since the pair of fourth guide plates 121 are provided in the notch 120 of the combined steel sheet pile connecting jig 100, the fitting portion 14 of the combined steel sheet pile 1X is used for connecting the combined steel sheet piles. The jig 100 is guided to the abutting surface 120a. For this reason, the fitting portion 14 of the combined steel sheet pile 1X can be easily brought into contact with the abutting surface 120a of the combined steel sheet pile connecting jig 100.

  Here, in the prior art, in order to connect the combined steel sheet pile 1 and the combined steel sheet pile 1X, it was necessary to fit the fitting portions 14 together by hand (see FIGS. 22B and 22D). In the embodiment, since the fitting portion 14 of the steel sheet pile 10 is inserted into the space 122 formed between the pair of fourth guide plates 121, it is only necessary to move the combined steel sheet pile 1X in the X direction with a crane or the like. Therefore, it is not necessary to use the scaffold 60 shown in FIGS. 22B and 22D in the work shown in FIGS. 10A and 11.

  At the time of the work shown in FIG. 10A, the alignment of the guide portion 114 of the combined steel sheet pile connecting jig 100 and the fitting portion 14 of the combined steel sheet pile 1X in the X direction and the Z direction is completed. By moving the combined steel sheet pile 1X downward in the Y direction, the guide portion 114 of the combined steel sheet pile connecting jig 100 and the fitting portion 14 of the combined steel sheet pile 1X can be fitted.

  Next, as shown in FIG. 10B, the combined steel sheet pile 1 </ b> X is driven while the fitting portion 14 of the combined steel sheet pile 1 </ b> X is fitted to the guide portion 114 and then to the fitting portion 14 of the combined steel sheet pile 1. I will do it. Then, as shown in FIG. 10C, the combined steel sheet pile 1X is driven until the upper end of the combined steel sheet pile 1X coincides with the upper end of the combined steel sheet pile connecting jig 100.

  When performing the operations shown in FIGS. 10A to 10C, in order to adjust the position and orientation of the H-shaped steel 20 of the combined steel sheet pile 1 </ b> X in the Z direction, as shown in FIG. 12, as shown in FIG. It is desirable to use 50. FIG. 12 is a side view showing the combined steel sheet pile 1 </ b> X, the guide frame 40, and the spacer 50. In this case, in order to avoid that the spacer 50 becomes an obstacle to the placing work, the placing work of the combined steel sheet pile 1X is started, and after the H-section steel 20 of the combined steel sheet pile 1X is placed on the ground to some extent, The spacer 50 is removed from the guide frame 40. The guide frame 40 is, for example, an H-shaped steel. The spacer 50 is manufactured by cutting a steel sheet pile about 30 cm in the length direction, for example.

  After the work shown in FIGS. 10A to 10C, the combined steel sheet pile connecting jig 100 is removed from the combined steel sheet pile 1 as shown in FIG. 13A. Under the present circumstances, the welding part 172 (refer FIG. 8) which is fixing the combination steel sheet pile installation jig | tool 100 with respect to the combination steel sheet pile 1 is cut | disconnected with a grinder. Then, a wire is hooked on the suspension hole 111a, and the combined steel sheet pile connecting jig 100 is lifted upward by a crane or the like. In this way, the combined steel sheet pile connecting jig 100 can be detached from the combined steel sheet pile 1.

  After the removal work of the combined steel sheet pile connecting jig 100 is completed, as shown in FIG. 13B, the combined steel sheet pile 1X is further driven into the ground. Then, as shown in FIG. 13C, when the combined steel sheet pile 1X is driven to a predetermined depth, the placing work of the combined steel sheet pile 1X is completed.

  At the end of the operation shown in FIG. 13C, the continuous wall 5 composed of two steel sheet piles 10 is constructed in the ground. When the work is further continued and the continuous wall 5 composed of three or more steel sheet piles 10 is built in the ground, the combined steel sheet pile connecting jig 100 is attached to the combined steel sheet pile 1X as shown in FIG. 13D. The same operation may be repeated. In this case, the combined steel sheet pile connecting jig 100 removed by the operation shown in FIG. 13A can be reused. The cost can be reduced by reusing the combined steel sheet pile continuous jig 100.

  In addition, when reusing the jig | tool 100 for combined steel sheet pile installation, since welding and a cutting | disconnection are repeated, it is assumed that the 3rd guide plate 170 deteriorates. However, in the combined steel sheet pile connecting jig 100, only the third guide plate 170 is welded to the combined steel sheet pile 1 (because the jig main body 110 is not welded), so that the third guide plate 170 is deteriorated. If the third guide plate 170 is replaced with another new third guide plate 170, the combined steel sheet pile connecting jig 100 can be reused over a long period of time.

  Moreover, in the operation | work of FIG. 13D, when the combination steel sheet pile 1 cast previously does not reach the target placement depth, the height position of the upper end of the steel sheet pile 10 becomes a position higher than usual. Even in such a case, since the notch 130 is provided at the end of the contact portion 116 of the combined steel sheet pile connecting jig 100, the combined steel sheet pile connecting jig 100 is combined. When attaching to the steel sheet pile 1X, interference between the fitting portion 14 of the combined steel sheet pile 1 and the combined steel sheet pile connecting jig 100 can be avoided.

  According to the present embodiment described above, the combined steel sheet pile connecting jig 100 having the guide portion 114 having the same shape as the fitting portion 14 of the steel sheet pile 10 is used, and the guide portion 114 is the fitting portion of the steel sheet pile 10. 14 can be attached to the combined steel sheet pile 1 so that the fitting portion 14 of the steel sheet pile 10 can be extended in the Y direction. As a result, since it is not necessary to drive a plurality of combination steel sheet piles 1 in two stages, the continuous work of combination steel sheet piles can be performed efficiently.

[Modification of jig for connecting steel sheet piles]
14A and 14B are views showing a modification of the combined steel sheet pile connecting jig 100 according to the present embodiment. 14A is a front view, and FIG. 14B is a cross-sectional view taken along line FF in FIG. 14A. As shown in FIGS. 14A and 14B, the pair of fourth guide plates 121 is provided with, for example, six stiffening plates 180 that are fixed to the surface facing the guide surface 121a by welding or the like. According to this structure, the fourth guide plate 121 can be supported by the stiffening plate 180 when the fitting portion 14 of the combined steel sheet pile 1X is brought into contact with the abutting surface 120a (see FIG. 11). Therefore, the rigidity of the fourth guide plate 121 can be improved.

  For example, as shown in FIG. 15, an H-shaped reinforcing member 190 having a pair of third guide plates 170 may be provided on the back side of the web portion 111 of the jig body 110. In this case, when the combined steel sheet pile connecting jig 100 is attached to the combined steel sheet pile 1, the third guide plate 170 of the reinforcing member 190 can sandwich the H-shaped steel 20 of the combined steel sheet pile 1. As a result, it is possible to improve the stability of the jig body 110 with respect to loads in the X direction and the Y direction during continuous installation work. Note that the reinforcing member 190 may be an H-section steel manufactured by hot rolling or an H-section steel manufactured by welding.

  For example, as shown in FIG. 16, a plate-shaped reinforcing member 192 having a pair of third guide plates 170 may be provided on the back side of the web portion 111 of the jig body 110. The reinforcing member 192 may be fixed to the web portion 111 of the jig main body 110 by welding, or may be mechanically joined with a bolt using an L-shaped angle material (not shown).

(Second Embodiment)
Next, the combined steel sheet pile connecting jig 200 according to the second embodiment of the present invention will be described. In addition, about the component same as the component mentioned above, the duplicate description below is abbreviate | omitted by attaching | subjecting the same code | symbol.

  FIG. 17 is a front view showing the combined steel sheet pile connecting jig 200 according to the present embodiment. In the first embodiment, the first guide plate 150, the second guide plate 160, and the third guide plate 170 protrude from the lower end 116a of the contact portion 116 downward in the Y direction with the same length. showed that. In contrast, in the combined steel sheet pile connecting jig 200 according to the present embodiment, as shown in FIG. 17, the protruding length of the first guide plate 150 is that of the second guide plate 160 and the third guide plate 170. Longer than the protruding length. Therefore, when the combined steel sheet pile connecting jig 200 is attached to the combined steel sheet pile 1, the first guide plate 150 is attached to the upper end 15 a of the steel sheet pile 10 before the second guide plate 160 and the third guide plate 170. To reach.

In the combined steel sheet pile continuous jig 200 according to the present embodiment, the first guide plate 150 is, for example, a steel plate having a width of 50 mm, a plate thickness of 9 mm, and a total length of 300 mm. Further, a part of the first guide plate 150 is fixed to the abutting part 116, and a part of the length is 100 mm. Furthermore, a part of the first guide plate 150 protrudes from the lower end 116a of the contact part 116, and a part of the length is 200 mm.
The second guide plate 160 and the third guide plate 170 are, for example, steel plates having a width of 50 mm, a plate thickness of 9 mm, and a total length of 200 mm. Moreover, a part of 2nd guide plate 160 and the 3rd guide plate 170 is being fixed to the contact part 116, and the length of the part is 100 mm, respectively. Furthermore, a part of the 2nd guide plate 160 and the 3rd guide plate 170 protrudes from the lower end 116a of the contact part 116, and the length of a part of each is 100 mm.

  Next, a method for attaching the combined steel sheet pile connecting jig 200 to the combined steel sheet pile 1 will be described. 18A is a partially enlarged front view showing a state where the pair of first guide plates 150 sandwiches the upper end portion 15 of the steel sheet pile 10 by lowering the combined steel sheet pile connecting jig 200 from the state shown in FIG. is there. 18B is a cross-sectional view taken along line GG in FIG. 18A. First, as shown in FIGS. 18A and 18B, the combined steel sheet pile connecting jig 200 is lowered such that the pair of first guide plates 150 sandwich the upper end portion 15 of the steel sheet pile 10. At this time, in the combined steel sheet pile connecting jig 200, the first guide plate 150 reaches the upper end 15 a of the steel sheet pile 10 before the second guide plate 160 and the third guide plate 170. Therefore, when the pair of first guide plates 150 sandwich the upper end portion 15 of the steel sheet pile 10, it can be reliably avoided that the second guide plate 160 and the third guide plate 170 come into contact with the steel sheet pile 10. As a result, the work of sandwiching the pair of first guide plates 150 can be easily performed.

  Then, when the pair of first guide plates 150 sandwich the steel sheet pile 10, the combined steel sheet pile is moved to a position where the second guide plate 160 does not contact the steel sheet pile 10 when the combined steel sheet pile connecting jig 200 is lowered. The connecting jig 200 is moved in the X direction (see FIG. 19A).

  Next, as shown in FIG. 19B, until the third guide plate 170 sandwiches the flange portion 12 and the web portion 11 of the steel sheet pile 10 and the lower end of the contact portion 116 does not contact the upper end of the steel sheet pile 10, Further, the combined steel sheet pile continuous jig 200 is lowered. Thereafter, the combined steel sheet pile connecting jig 200 is moved in the X direction until the second guide plate 160 contacts the steel sheet pile 10.

  Next, as shown in FIG. 19C, the combined steel sheet pile connecting jig 200 is moved downward in the Y direction until the lower end of the contact portion 116 contacts the upper end of the steel sheet pile 10. Thereafter, as in the first embodiment, the combined steel sheet pile connecting jig 200 is fixed to the steel sheet pile 10 by spot welding or fillet welding. Thus, the installation work of the combined steel sheet pile continuous jig 200 is completed. Since the subsequent operations are the same as those in the first embodiment, description thereof is omitted.

  In addition, when the convex part 16 is previously provided in the fitting part 14 of the steel sheet pile 10 (refer FIG. 18B), in the X direction of the guide part 114 with respect to the fitting part 14 using this convex part 16 Positioning may be performed. In this case, by providing the pair of first guide plates 150 in advance at positions corresponding to the convex portions 16, the first guide plates 150 can be positioned in the Z direction and positioned in the X direction. In other words, with the pair of first guide plates 150 sandwiching the steel sheet pile 10, the combined steel sheet pile connecting jig 200 is moved in the X direction until the first guide plate 150 contacts the convex portion 16. Thus, the guide portion 114 can be positioned in the X direction and the Y direction with respect to the fitting portion 14. Therefore, it is possible to more efficiently perform the mounting operation of the combined steel sheet pile installation jig 200.

(Third embodiment)
Next, a combined steel sheet pile connecting jig 300 according to a third embodiment of the present invention will be described. In addition, about the component same as the component mentioned above, the duplicate description below is abbreviate | omitted by attaching | subjecting the same code | symbol.

  FIG. 20 is a front view showing the combined steel sheet pile connecting jig 300 according to the present embodiment. As shown in FIG. 20, in the combined steel sheet pile connecting jig 300 according to the present embodiment, the protruding length of the second guide plate 160 is longer than the protruding length of the first guide plate 150, and the protruding of the first guide plate 150. The length is longer than the protruding length of the third guide plate 170. Therefore, when the combined steel sheet pile connecting jig 300 is attached to the combined steel sheet pile 1, the second guide plate 160, the first guide plate 150, and the third guide plate 170 are arranged in the order of the second guide plate 160 and the first guide plate 170. The plate 150 and the third guide plate 170 reach the upper end 15a of the steel sheet pile 10.

The first guide plate 150 of the combined steel sheet pile connecting jig 300 is, for example, a steel plate having a width of 50 mm, a plate thickness of 9 mm, and a total length of 300 mm. In addition, a part of the first guide plate 150 is fixed to the contact part 116, and a part of the length is 100 mm. Furthermore, a part of the first guide plate 150 protrudes from the lower end 116a of the contact part 116, and a part of the length is 200 mm.
The second guide plate 160 of the combined steel sheet pile connecting jig 300 is, for example, a steel plate having a width of 50 mm, a plate thickness of 9 mm, and a total length of 400 mm. Further, a part of the second guide plate 160 is fixed to the abutting part 116, and a part of the length is 100 mm. Furthermore, a part of the second guide plate 160 protrudes from the lower end 116a of the abutting part 116, and a part of the length is 300 mm.
The third guide plate 170 of the combined steel sheet pile connecting jig 300 is, for example, a steel plate having a width of 50 mm, a plate thickness of 9 mm, and a total length of 200 mm. A part of the third guide plate 170 is fixed to the contact part 116, and a part of the length is 100 mm. Furthermore, a part of the third guide plate 170 protrudes from the lower end 116a of the abutting part 116, and a part of the length is 100 mm.

  Next, a method for attaching the combined steel sheet pile connecting jig 300 according to the present embodiment to the combined steel sheet pile 1 will be described. First, from the state shown in FIG. 20, the combined steel sheet pile connecting jig 300 is lowered to a position where the second guide plate 160 does not contact the upper end 15 a of the steel sheet pile 10. When the second guide plate 160 is moved downward in the Y direction, the steel sheet piles are continuously connected in the X direction while visually confirming the position where the second guide plate 160 does not contact the upper end 15a of the steel sheet pile 10. The jig 300 is moved.

  Next, the combined steel sheet pile connecting jig 300 is lowered so that the first guide plate 150 sandwiches the upper end portion 15 of the steel sheet pile 10. FIG. 21A is a partially enlarged front view showing a state in which the pair of first guide plates 150 sandwiches the upper end portion 15 of the steel sheet pile 10. FIG. 21B is a cross-sectional view taken along line HH in FIG. 21A. Thereafter, the combined steel sheet pile connecting jig 300 is moved in the X direction until the second guide plate 160 contacts the steel sheet pile 10 with the pair of first guide plates 150 sandwiching the upper end portion 15 of the steel sheet pile 10. Let Then, the combined steel sheet pile connecting jig 300 is moved downward in the Y direction until the lower end 116a of the contact portion 116 contacts the upper end 15a of the steel sheet pile 10. With the above operation, the combined steel sheet pile connecting jig 300 can be attached to the combined steel sheet pile 1 so that the fitting portion 14 and the guide portion 114 overlap when viewed from the Y direction. Since the subsequent operations are the same as those in the first embodiment, detailed description thereof is omitted.

  As described above, in the continuous method using the combined steel sheet pile connecting jig 300, before the pair of first guide plates 150 sandwich the upper end portion 15 of the steel sheet pile 10, the combined steel sheet pile continuous connection is used. The jig 300 can be disposed at a position where the second guide plate 160 does not contact the steel sheet pile 10. Therefore, the second guide plate 160 and the third guide plate 170 can be prevented from coming into contact with the steel sheet pile 10 when the first guide plate 150 sandwiches the steel sheet pile 10. Therefore, since the operation of sandwiching the pair of first guide plates 150 between the steel sheet piles 10 can be performed smoothly, the mounting operation of the combined steel sheet pile connecting jig 300 can be performed efficiently.

  As mentioned above, although each embodiment of this invention was described, these embodiment was shown as an example and the range of this invention is not limited only to these embodiment. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope of the present invention and the gist thereof, and are also included in the invention described in the claims and the equivalent scope thereof.

  For example, in 1st Embodiment, the case where the planar shape of the jig | tool main body 110 of the jig | tool 100 for combined steel sheet pile connection 100 was the same as the shape of the steel sheet pile 10 used for the combined steel sheet pile 1 was shown. However, from the viewpoint of extending the length of the fitting portion 14 of the steel sheet pile 10, at least the guide portion 114 of the jig main body 110 has the same shape as the fitting portion 14 of the steel sheet pile 10. Just do it.

  Further, for example, in the first embodiment, the case where the combined steel sheet pile connecting jig 100 is attached to the combined steel sheet pile 1 composed of the hat-shaped steel sheet pile 10 and the H-section steel 20 has been shown. However, the hat-shaped steel sheet pile 10 used for the combined steel sheet pile 1 may be a hat-shaped steel sheet pile integrally formed in a hot rolling or cold forming process, and 2 manufactured in a hot rolling or cold forming process. A hat-shaped steel sheet pile composed of a single Z-shaped steel sheet pile may be used. In addition, the jig 100 for connecting the combined steel sheet piles is formed of a hat-shaped steel sheet pile integrally formed in a hot rolling or cold forming process in accordance with the hat-shaped steel sheet pile 10 of the combined steel sheet pile 1. Or a hat-shaped steel sheet pile made up of two Z-shaped steel sheet piles manufactured in a hot rolling or cold forming process may be used as the jig body 110. Further, the main structural member is not limited to the H-section steel 20 and may be a T-section steel.

  ADVANTAGE OF THE INVENTION According to this invention, the jig | tool for combined steel sheet pile continuous installation and the combined steel sheet pile continuous connection method which can aim at the efficiency improvement of the continuous installation operation | work of a some combined steel sheet pile can be provided.

1: Combination steel sheet pile 5: Continuous wall 10: Hat-shaped steel sheet pile (steel sheet pile)
11: Web part of hat-shaped steel sheet pile 12: Flange part of hat-shaped steel sheet pile 13: Arm part of hat-shaped steel sheet pile 14: Fitting part (joint part) of hat-shaped steel sheet pile
15: Upper end portion of hat-shaped steel sheet pile 16: Convex portion of hat-shaped steel sheet pile 20: H-shaped steel 21: H-shaped steel flange portion 22: H-shaped steel web portion 40: Guide frame 50: Spacer 60: Scaffold 100 : Combined steel sheet pile installation jig (first embodiment)
110: Jig body of a jig for connecting a combined steel sheet pile 111: Web portion 112 of a jig for connecting a combined steel sheet pile: Flange portion 113 of a jig for connecting a combined steel sheet pile: Jig for connecting a combined steel sheet pile Arm part 114: Guide part 116 of the combined steel sheet pile connecting jig: Contact part of the combined steel sheet pile connecting jig (lower end part of the jig body)
116a: Lower end (lower edge) of the contact portion
120: Notch (first notch)
120a: abutting surface 121: fourth guide plate 121a: guide surface 123 of the fourth guide plate 123: welded portion 130: notch (second notch)
150: A pair of first guide plates (first positioning portions)
160: Second guide plate (second positioning portion)
170: Three third guide plates (third positioning portion)
172: Welded part (fixed part)
180: Stiffening plate 190: H-shaped reinforcing member 192: Plate-shaped reinforcing member 200: Jig for combined steel sheet pile connection (second embodiment)
300: Combined steel sheet pile continuous jig (third embodiment)
X: Wall direction (width direction, combined steel sheet pile arm direction)
Y: Height direction (vertical direction)
Z: Wall body orthogonal direction

Claims (8)

When combining a plurality of combination steel sheet piles having a pair of arm portions parallel to each other and a fitting portion provided in each of these arm portions while connecting the fitting portions, the combination steel A jig used by attaching to the upper edge of a sheet pile,
A guide portion having the same shape as the fitting portion;
A first positioning portion that is in sliding contact with the pair of arm portions along an arrangement direction of the pair of arm portions;
A second positioning part for restricting further movement of the guide part when the guide part is moved along the arrangement direction and the relative position with the fitting part coincides;
A contact portion that contacts the upper edge;
A jig for continuously providing a combined steel sheet pile, comprising:   2. The combined steel sheet pile connection according to claim 1, further comprising a first notch portion provided at an upper end portion of the guide portion and having an abutting surface in contact with the fitting portion. Jig.   3. The combination steel according to claim 2, wherein the first notch portion further includes a pair of guide surfaces that extend so as to spread around the abutting surface with the abutting surface interposed therebetween. A jig for connecting sheet piles.   The combined steel sheet pile connecting jig according to any one of claims 1 to 3, wherein an end portion of the contact portion includes a second notch portion. The first positioning part and the second positioning part protrude vertically downward from a lower edge of the contact part;
A protruding length of the first positioning portion is longer than a protruding length of the second positioning portion;
The combined steel sheet pile connecting jig according to any one of claims 1 to 4, wherein the jig is provided. The first positioning part and the second positioning part protrude vertically downward from a lower edge of the contact part;
A protruding length of the first positioning portion is shorter than a protruding length of the second positioning portion;
The combined steel sheet pile connecting jig according to any one of claims 1 to 4, wherein the jig is provided.   The combined steel sheet pile connecting jig according to any one of claims 1 to 6, further comprising a fixing portion fixed to the combined steel sheet pile. A method for continuously providing a plurality of the combined steel sheet piles using the combined steel sheet pile connecting jig according to any one of claims 1 to 7,
A first placing step of placing the combined steel sheet pile;
While the first positioning portion is in sliding contact with the pair of arm portions of the combined steel sheet pile after the first placing step, the movement of the guide portion is restricted by the second positioning portion. A positioning step of bringing the abutting portion into contact with the upper edge,
After the positioning step, the other combined steel sheet pile is hit while the fitting portion of the other combined steel sheet pile is fitted to the guide portion and then to the fitting portion of the other combined steel sheet pile. A second placing step to be established;
A combined steel sheet pile connecting method characterized by comprising:

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