JP6432248B2 - Fitting auxiliary jig and fitting part fitting method - Google Patents

Description

  The present invention relates to a fitting auxiliary jig for fitting a plurality of steel sheet piles at a joint part, and a fitting method of the joint part.

  Conventionally, after connecting the existing steel sheet pile and the new steel sheet pile, the steel sheet pile placing jig is configured to be easily removable so that the construction efficiency at the time of steel sheet pile placing can be improved. Steel sheet pile driving jigs disclosed in Documents 1 and 2 have been proposed.

  The steel sheet pile driving jig disclosed in Patent Document 1 includes a grip part in which a crowned groove for covering the edge part of an existing steel sheet pile is opened, and an edge part end face for connection of the existing steel sheet pile. A covering section covering and an insert guide section forming a connecting edge end face space of a new steel sheet pile adjacent to the covering section and opened at the lower end position of the guide slope, and these cover the crowned groove The parts are connected continuously.

  The steel sheet pile driving jig disclosed in Patent Document 2 includes a covering portion covering the upper end surface of the joint portion formed in the hook shape of the existing steel sheet pile, and a joint portion formed in the hook shape of the newly installed steel sheet pile. And a fitting portion of the new steel sheet pile in the return direction of the joint portion of the new steel sheet pile, the fitting insertion portion being formed continuously with the covering portion. The guide part in which the opening part of the opening width larger than the part width | variety was formed is provided.

Japanese Utility Model Publication No. 61-026738 JP 2007-255072 A

  However, the steel sheet pile driving jig disclosed in Patent Document 1 is a steel sheet pile driving jig that has an insert guide portion that extends in the height direction and forms a connecting edge end face shape space of a new steel sheet pile. The tool is attached to an existing steel sheet pile, and there is a problem that the joint portion of the new steel sheet pile cannot be inserted from the side of the steel sheet pile placing jig.

  Moreover, since the steel sheet pile driving jig disclosed in Patent Document 2 suspends the joint portion of the newly installed steel sheet pile along the tapered surface of the covering portion, it is difficult to maintain the verticality by tilting the newly installed steel sheet pile. In order to maintain the verticality of the new steel sheet piles, it is necessary not only to make fine adjustments to the crane, but also to reduce the construction efficiency, depending on the skill of the crane operator. It was.

  Furthermore, since the steel sheet pile placing jig disclosed in Patent Document 2 is formed in a shape in which the tapered surface of the covering portion has an inclined surface, the manufacturing cost of the steel sheet pile placing jig increases. In addition, since the side positioning plate is in contact with the arm portion of the existing steel sheet pile and is fixed by a bolt from one side, the position of the steel sheet pile driving jig with respect to the existing steel sheet pile is uniformly determined, and There was a problem that fine adjustment of the plane position of the new steel sheet pile was impossible. In addition, the opening width of the opening portion is the same width in the wall body direction, and there is a problem that it cannot be interpolated from the side unless the swing width of the trailing sheet pile is suppressed to the opening width or less in advance.

  Therefore, the present invention has been devised in view of the above-described problems, and the object of the present invention is to easily align the joint portion of the preceding steel sheet pile and the joint portion of the subsequent steel sheet pile. It is providing the fitting auxiliary jig which can improve the construction efficiency of the fitting operation | work of the joint part of a preceding steel sheet pile, and the joint part of a subsequent steel sheet pile.

The fitting auxiliary jig according to the first invention is a fitting auxiliary jig for fitting a plurality of steel sheet piles at joint portions, and is a steel sheet pile cover part fixed to a preceding steel sheet pile provided in advance. And a sway suppressing portion against which a joint portion of a subsequent steel sheet pile provided in the slat is brought into contact, wherein the sway suppressing portion includes a first plate material on which a first abutting surface is formed, and a second abutting portion. A second plate member having a surface formed between the first plate member and the second plate member to form an inner space for inserting a joint portion of a subsequent steel sheet pile. The first plate member and the second plate member are arranged to have a predetermined angle with each other in a planar direction, and the joint portion of the subsequent steel sheet pile is connected to the first contact surface and the second contact surface. After making it contact | abut in any one of these, or after making the joint part of a subsequent steel sheet pile contact | abut at two places with the said 1st contact surface and the said 2nd contact surface, it follows Ri Do those fitting the joint portions of the sheet pile in the joint portion of the preceding sheet pile, wherein the first plate and the second plate member, from the preceding sheet piles base end side provided, the trailing sheet pile is provided until the distal end side, by expanding substantially linearly toward laterally planar direction, and wherein the Rukoto Do as to form a flared portion in the space.

Fitting auxiliary jig according to the second invention, Oite the first shot bright, the first plate and the second plate, the first upper abutment surface and the second abutment surface, the height It is formed so as to be substantially parallel to the joint portion of the preceding steel sheet pile in the direction, and one or both of the first contact surface and the second contact surface are inclined downward from above. It is formed in a substantially tapered shape.

The fitting assist jig according to a third invention is the first invention or the second invention , wherein the steel sheet pile cover part sandwiches a part of the preceding steel sheet pile, and from one side or both sides of the preceding steel sheet pile in a planar direction. A plurality of bolts arranged side by side are fixed to the preceding steel sheet pile.

The fitting auxiliary jig according to a fourth invention is the first invention to the third invention, wherein the steel sheet pile cover part sandwiches a part of the preceding steel sheet pile, from one side or both sides of the preceding steel sheet pile, A plurality of bolts arranged side by side in the direction of the wall body to which the plurality of steel sheet piles are connected, and are fixed to the preceding steel sheet pile.

The fitting auxiliary jig according to a fifth aspect of the invention is any one of the first to fourth aspects of the invention, wherein the steel sheet pile cover portion is made of a material having magnetic force and fixed to the preceding steel sheet pile by magnetic force. It is characterized by being.

The fitting method of the joint part which concerns on 6th invention is a fitting method of the joint part for making a some steel sheet pile fit in a joint part, Comprising: The steel sheet pile fixed to the preceding steel sheet pile provided in advance By sandwiching a part of the preceding steel sheet pile with the steel sheet pile cover part, a fitting auxiliary jig having a cover part and a vibration suppressing part with which a joint part of a subsequent steel sheet pile provided on the subsequent side comes into contact The first attachment step formed in the inner space of the vibration suppressing portion sandwiched between the attachment step to be attached and the first plate member on which the first contact surface is formed and the second plate member on which the second contact surface is formed . Expanding from the base end side where the preceding steel sheet pile is provided to the distal end side where the subsequent steel sheet pile is provided in the plate material and the second plate material, in a plane direction, in a substantially straight line. in part, from the joint portion of the trailing sheet pile is brought into contact with any one position of the first abutment surface and the second abutment surface, or The joint portion of the subsequent steel sheet pile is brought into contact with the joint portion of the preceding steel sheet pile after the joint portion of the subsequent steel sheet pile is brought into contact with the two portions of the first contact surface and the second contact surface. And a fitting step.

  According to the first to seventh inventions, the first contact surface and the second contact surface cause the joint portion of the subsequent steel sheet pile to contact one or two locations, and are generated when the crane is operated. By restraining the shaking of the following steel sheet pile, the position of the joint part of the following steel sheet pile can be stabilized, and the joint part of the preceding steel sheet pile and the joint part of the following steel sheet pile can be easily aligned. It becomes possible to improve the construction efficiency of the fitting operation of the joint portion of the preceding steel sheet pile and the joint portion of the subsequent steel sheet pile.

  According to the first invention to the seventh invention, the joint portion of the subsequent steel sheet pile can be slid and moved substantially vertically downward while contacting one or two locations of the first contact and the second contact. The trailing steel sheet pile can be lowered substantially vertically, and the substantially vertical lowered state of the trailing steel sheet pile is maintained, and the fitting work of the joint portion of the preceding steel sheet pile and the joint portion of the subsequent steel sheet pile is performed. Construction efficiency can be improved.

  According to the 1st invention-the 7th invention, not only can a vibration suppression part and a steel sheet pile cover part be joined easily by combining a plurality of substantially flat steel plates, but also a steel sheet pile cover part. Can be easily attached and detached, and the same mating auxiliary jig can be attached to multiple steel sheet piles in sequence, and reused as a removable one, thereby suppressing an increase in manufacturing costs and material costs of the mating auxiliary jig It becomes possible.

  In particular, according to the second aspect of the present invention, since the expanded portion is expanded in a substantially linear shape, a large entrance is ensured in the inner space of the sway suppressing portion in which the joint portion of the subsequent steel sheet pile is inserted. Therefore, even if the trailing steel sheet pile is greatly swaying due to crane operation etc., the joint part of the trailing steel sheet pile can be easily interpolated in the inner space of the sway suppressing part, and the trailing steel sheet pile Since the joint portion is brought into contact with one surface or two surfaces of the vibration suppressing portion, the vibration width can be gradually reduced, so that it is possible to easily and reliably restrain the vibration of the subsequent steel sheet pile.

  In particular, according to the third invention, the lower part of the first contact surface of the first plate member or the lower part of the second contact surface of the second plate member is formed in a substantially tapered shape that is inclined downward from above. Even if the expanding part of the inner space of the vibration suppression part is secured larger, and the trailing steel sheet pile is significantly shaken due to strong winds etc., the rear part of the inner part of the vibration suppression part It becomes possible to easily and reliably stop the large shaking of the succeeding steel sheet pile by easily interpolating the joint portion of the running steel sheet pile.

  In particular, according to the fourth and fifth inventions, the steel sheet pile cover portion is inclined without making the steel sheet pile cover portion substantially parallel to the arm portion of the preceding steel sheet pile, only by making the projecting lengths of the plurality of bolts from the side plate material different. Therefore, it is possible to easily adjust the position of the joint portion of the preceding steel sheet pile and the joint portion of the subsequent steel sheet pile with high accuracy as a means for easily adjusting the position of the vibration suppressing portion in the plane direction. It becomes possible.

  In particular, according to the sixth invention, when the steel sheet pile cover part is fixed to the preceding steel sheet pile by magnetic force, it is possible to improve the ease of attachment and detachment without requiring a bolting operation or the like.

It is a perspective view which shows the steel sheet pile wall where the fitting auxiliary jig to which this invention is applied is used. It is a top view which shows the hat-shaped steel sheet pile of the steel sheet pile wall where the fitting auxiliary jig to which this invention is applied is used. (A) is a top view which shows the steel sheet pile wall where the fitting auxiliary jig to which this invention is applied is used, (b) is the front view. It is a perspective view which shows the fitting assistance jig to which this invention is applied. It is a front view which shows the fitting assistance jig to which this invention is applied. (A) is DD sectional drawing of FIG. 5, (b) is EE arrow sectional drawing of FIG. It is a front view which shows the steel sheet pile cover part of the fitting auxiliary jig to which this invention is applied. It is a top view which shows the fitting assistance jig to which this invention is applied. It is a side view which shows a 1st board | plate material and a 2nd board | plate material which are upright in the fitting auxiliary jig to which this invention is applied. It is a side view which shows the 1st board | plate material and the 2nd board | plate material which were partially formed in the substantially taper shape with the fitting auxiliary jig to which this invention is applied. It is a front view which shows the attachment process which moves a steel sheet pile cover part toward the downward direction from the upper part of the arm part of a preceding steel sheet pile by the fitting method of the joint part to which this invention is applied. It is a top view which shows the attachment process which attaches a steel sheet pile cover part to the arm part of a preceding steel sheet pile by the fitting method of the joint part to which this invention is applied. It is a top view which shows the fitting process which moves the joint part of a subsequent steel sheet pile from the side to the inner space of a vibration suppression part, and is inserted by the fitting method of the joint part to which this invention is applied. It is a side view which shows the fitting process which slides the joint part of a subsequent steel sheet pile toward the downward direction by the fitting method of the joint part to which this invention is applied, and is fitted to the joint part of a preceding steel sheet pile. It is a top view which shows the state which stopped the shaking of the subsequent steel sheet pile by pinching the joint part of a subsequent steel sheet pile with the vibration suppression part with the fitting auxiliary jig to which this invention is applied. It is a top view which shows the state which adjusted the position of the plane direction of the shaking suppression part with the fitting auxiliary jig to which this invention is applied. It is a top view which shows the U-shaped steel sheet pile of the steel sheet pile wall where the fitting auxiliary jig to which this invention is applied is used. It is a top view which shows the Z-shaped steel sheet pile of the steel sheet pile wall where the fitting auxiliary jig to which this invention is applied is used.

  Hereinafter, the form for implementing the fitting auxiliary jig 1 to which this invention is applied is demonstrated in detail, referring drawings.

  As shown in FIG. 1, the auxiliary fitting jig 1 to which the present invention is applied is a steel in which a plurality of steel sheet piles 4 are fitted with joint portions 5 and the plurality of steel sheet piles 4 are connected in the wall body direction X. Used to construct sheet pile wall 7.

  The steel sheet pile wall 7 is constructed such that a plurality of steel sheet piles 4 are connected in the wall body direction X and sequentially placed in the ground 8 to separate the front side and the back side in the wall body orthogonal direction Y. The In the steel sheet pile wall 7, a plurality of steel sheet piles 4 having a predetermined extension in the height direction Z are driven to a predetermined depth in the ground 8.

  As shown in FIG. 2, the steel sheet pile 4 includes a flange portion 61, a pair of web portions 62, a pair of arm portions 63, and a pair of joint portions 5 when a hat-shaped steel sheet pile is used. Thus, each coupling portion 5 is formed with a fitting groove 5b for fitting the fitting claws 5a of the joint portions 5 adjacent to each other.

  The flange portion 61 extends in the wall body direction X and is formed in a substantially flat plate shape or the like. The pair of web portions 62 is formed to be inclined in the wall body orthogonal direction Y from each of both ends of the flange portion 61 in the wall body direction X. The pair of arm portions 63 are formed substantially parallel to the flange portion 61 from one end in the wall body direction X of each web portion 62. The pair of joint portions 5 are formed at the tips of the arm portions 63 in the wall body direction X.

  As shown in FIG. 3, the plurality of steel sheet piles 4 are provided by being driven backward in the ground 8 at a joint portion 51 of the preceding steel sheet pile 41 provided by being advanced in the ground 8. By fitting the joint portion 52 of the succeeding steel sheet pile 42, the preceding steel sheet pile 41 provided in the preceding direction and the succeeding steel sheet pile 42 provided in the succeeding manner are connected adjacent to each other in the wall body direction X. Will be.

  As shown in FIG. 4, the auxiliary fitting jig 1 to which the present invention is applied follows the steel sheet pile cover portion 2 fixed to the arm portion 63 of the preceding steel sheet pile 41 and the joint portion 51 of the preceding steel sheet pile 41. When fitting the joint part 52 of the steel sheet pile 42, the vibration suppressing part 3 with which the joint part 52 of the subsequent steel sheet pile 42 abuts is provided.

  As shown in FIGS. 5 and 6A, the steel sheet pile cover portion 2 includes a pair of side plate materials 20 using substantially flat steel plates and the like, and a preceding steel sheet pile 41 in the wall body orthogonal direction Y. A pair of side plate members 20 are provided so as to be substantially parallel to each other in the wall body direction X with an interval equal to or greater than the plate thickness of the arm portion 63.

  The steel sheet pile cover portion 2 has one or a plurality of bolt insertion holes 21 formed so as to penetrate in the thickness direction of the side plate material 20 in one or both of the pair of side plate materials 20. A threaded portion 21 a is provided in the bolt insertion hole 21 by tapping the part where the bolt insertion hole 21 is formed, or by attaching a welding nut or the like to the part where the bolt insertion hole 21 is formed.

  The steel sheet pile cover portion 2 is a planar direction composed of a wall body direction X and a wall body orthogonal direction Y when a plurality of bolt insertion holes 21 are formed in one or both of the pair of side plate members 20, and FIG. As shown in (a), a plurality of bolt insertion holes 21 are formed side by side. As shown in FIG. 7B, the steel sheet pile cover portion 2 may be formed with a plurality of bolt insertion holes 21 arranged in the height direction Z of the side plate material 20, and as shown in FIG. 7C. In addition, a plurality of bolt insertion holes 21 may be formed side by side in the planar direction and the height direction Z of the side plate material 20. In particular, when it is desired to adjust the angle of the vibration suppressing portion 3 with respect to the wall body orthogonal direction Y, a plurality of bolt insertion holes 21 are formed in the wall body direction X as shown in FIGS. Is desirable.

  As shown in FIG. 6A, the steel sheet pile cover portion 2 sandwiches an arm portion 63 constituting a part of the preceding steel sheet pile 41 with a pair of side plate materials 20, and a plurality of bolts 22 are inserted into the bolt insertion holes 21. The bolts 22 are inserted into the screw insertion portions 21 a of the bolt insertion holes 21. In the steel sheet pile cover portion 2, each bolt 22 is screwed into the screwing portion 21 a of the bolt insertion hole 21 from one side or both sides of the arm portion 63 of the preceding steel sheet pile 41, and the leading end of each bolt 22 is advanced. By supporting the arm portion 63 of the steel sheet pile 41, the steel sheet pile 41 is fixed to the preceding steel sheet pile 41.

  The steel sheet pile cover 2 is made of a steel plate or the like that does not have a magnetic force for each side plate member 20, but is not limited thereto, and each side plate member 20 is made of a material such as a magnet that has a magnetic force. The arm portion 63 of the preceding steel sheet pile 41 may be fixed by a magnetic force. At this time, the steel sheet pile cover part 2 may be fixed to the arm part 63 of the preceding steel sheet pile 41 by the magnetic force together with the bolt 22 or may be fixed only by the magnetic force.

  As shown in FIGS. 5 and 6 (b), the vibration suppressing unit 3 includes a first plate member 31 on which a first contact surface 31a is formed, and a second plate member 32 on which a second contact surface 32a is formed. And an inner space S for inserting the joint portion 52 of the subsequent steel sheet pile 42 is formed between the first plate member 31 and the second plate member 32. The vibration suppressing unit 3 uses a substantially flat steel plate or the like as the first plate material 31, the first contact surface 31 a is formed in a substantially flat shape, and the substantially flat steel plate or the like as the second plate material 32. Used, the second contact surface 32a is formed in a substantially flat shape.

  The shaking suppression part 3 is a steel sheet pile cover by joining the 1st board | plate material 31 and the 2nd board | plate material 32 by welding etc. to the rib parts 23, such as steel materials provided continuously above the steel sheet pile cover part 2. FIG. It is connected to the part 2 via a rib part 23. In the state where the steel sheet pile cover portion 2 is fixed to the arm portion 63 of the preceding steel sheet pile 41, the vibration suppressing unit 3 is configured to place the first plate material 31 and the second plate material 32 above the joint portion 51 of the preceding steel sheet pile 41. By providing it, the inner space S is arranged continuously with the joint portion 51 of the preceding steel sheet pile 41.

  As shown in FIG. 8, the first plate member 31 and the second plate member 32 are mutually in a plane direction from the proximal end side A where the preceding steel sheet pile 41 is provided to the distal end side B where the subsequent steel sheet pile 42 is provided. They are arranged to have a predetermined angle θ. The first plate member 31 and the second plate member 32 are fixed to the rib portion 23 on the base end side A, and expand substantially linearly from the base end side A to the tip end side B in the plane direction. Thus, the expanded portion 30 is formed in the inner space S.

  The first plate member 31 and the second plate member 32 are a part of the first contact surface 31a of the first plate member 31 and a part of the inner surface of the fitting groove 5b in the joint portion 51 of the preceding steel sheet pile 41. While substantially matching the position in the plane direction, with a part of the second contact surface 32a of the second plate 32 and a part of the outer surface of the fitting claw 5a at the joint 52 of the subsequent steel sheet pile 42, It arrange | positions so that the position in a plane direction may be made to correspond substantially.

  The first plate member 31 and the second plate member 32 are formed by inserting the joint portion 52 of the subsequent steel sheet pile 42 into the inner space S from the side, and the fitting claws 5a at the joint portion 52 of the subsequent steel sheet pile 42 are provided. The first contact surface 31a of the first plate 31 is contacted by the first contact C1, and the second contact surface 32a of the second plate 32 is contacted by the second contact C2.

  The first plate material 31 and the second plate material 32 are the first contact C1 of the first contact surface 31a and the second contact C2 of the second contact surface 32a, and two joint portions 52 of the subsequent steel sheet pile 42 are provided. It will be made to contact. As shown in FIG. 9, the first plate member 31 and the second plate member 32 are formed in a substantially vertical upright shape so as to be substantially parallel to the axial direction of the joint portion 51 of the preceding steel sheet pile 41 in the height direction Z. The

  At this time, the first plate member 31 and the second plate member 32 slide and move substantially vertically downward while the joint portion 52 of the subsequent steel sheet pile 42 is brought into contact with the two points of the first contact C1 and the second contact C2. Thus, the joint portion 52 of the subsequent steel sheet pile 42 is fitted to the joint portion 51 of the preceding steel sheet pile 41.

  In addition, the 1st board | plate material 31 and the 2nd board | plate material 32 are either the 1st contact C1 of the 1st contact surface 31a, and the 2nd contact C2 of the 2nd contact surface 32a, and the joint part of the succeeding steel sheet pile 42 52 is brought into contact with one place, and the joint portion 52 of the following steel sheet pile 42 is slid and moved substantially vertically downward while being brought into contact with one of the first contact C1 and the second contact C2. Thus, the joint portion 52 of the subsequent steel sheet pile 42 may be fitted to the joint portion 51 of the preceding steel sheet pile 41.

  As shown in FIG. 10, the first plate member 31 and the second plate member 32 are formed by connecting the upper portion 31 b of the first contact surface 31 a and the upper portion 32 b of the second contact surface 32 a with the joint of the preceding steel sheet pile 41 in the height direction Z. The first contact surface 31a and the lower portion 31c of the first contact surface 31a and the lower portion 32c of the second contact surface 32a or both of them are upward in the height direction Z. It may be formed in a substantially tapered shape that inclines downward from the bottom.

  At this time, the first plate member 31 and the second plate member 32 have an inner space S in which the lower portion 31c of the first contact surface 31a and the lower portion 32c of the second contact surface 32a are directed in the height direction Z from below to above. The first contact surface 31a and the second contact surface 32a are formed so as to be inclined so that the entire length in the height direction Z of the first contact surface 31a and the second contact surface 32a is substantially vertical. A large expanded portion 30 of the space S is ensured.

  The first plate member 31 and the second plate member 32 are formed such that the upper portion 31b of the first contact surface 31a and the upper portion 32b of the second contact surface 32a are formed upright, so that the upper portion of the first contact surface 31a. At the upper part 32b of 31b and the second contact surface 32a, the joint part 52 of the succeeding steel sheet pile 42 slides and moves substantially vertically downward. Further, the first plate member 31 and the second plate member 32 are formed such that the lower portion 31c of the first contact surface 31a and the lower portion 32c of the second contact surface 32a are formed in a substantially tapered shape. At the lower portion 31c of 31a and the lower portion 32c of the second contact surface 32a, the joint portion 52 of the subsequent steel sheet pile 42 slides downward while sliding in the wall body direction X, and the joint of the subsequent steel sheet pile 42 is obtained. The part 52 is fitted to the joint part 51 of the preceding steel sheet pile 41.

  As shown in FIG. 1, the fitting method of the joint portion to which the present invention is applied is to fit a plurality of steel sheet piles 4 at the joint portion 5 using the fitting auxiliary jig 1 to which the present invention is applied. Yes, as shown in FIGS. 11 to 14, the fitting step of attaching the fitting auxiliary jig 1 to the preceding steel sheet pile 41 and fitting the joint portion 52 of the subsequent steel sheet pile 42 to the joint portion 51 of the preceding steel sheet pile 41. A fitting process.

  First, in the attaching step, as shown in FIG. 11, the steel sheet pile cover portion 2 of the fitting auxiliary jig 1 is moved downward from above the arm portion 63 of the preceding steel sheet pile 41. At this time, the steel sheet pile cover portion 2 is configured such that either one or both of the pair of side plate materials 20 is an arm of the preceding steel sheet pile 41 between the pair of side plate materials 20 spaced apart in the wall body orthogonal direction Y. The arm part 63 of the preceding steel sheet pile 41 is sandwiched by being brought into contact with or separated from the part 63.

  Next, in the attaching step, as shown in FIG. 12, a plurality of bolts 22 are screwed into the screwing portions 21 a of the bolt insertion holes 21 from one side or both sides of the arm portion 63 of the preceding steel sheet pile 41. The arm portion 63 of the preceding steel sheet pile 41 is supported by the tip of the bolt 22, and the steel sheet pile cover portion 2 of the fitting assist jig 1 is attached to the preceding steel sheet pile 41. In the attaching step, the steel sheet pile cover portion 2 may be attached to the preceding steel sheet pile 41 by magnetic force using the side plate material 20 made of a material having magnetic force.

  Next, in the fitting process, as shown in FIG. 13, the joint portion 52 of the subsequent steel sheet pile 42 is moved from the side to the inner space S of the shake suppressing portion 3 to be inserted therein, whereby the swing suppressing portion. 3, the joint portion 52 of the subsequent steel sheet pile 42 is brought into contact at two locations with the first contact surface 31 a and the second contact surface 32 a. At this time, in the shaking suppressing portion 3, the first plate material 31 and the second plate material 32 are formed upright, and the joint portion 52 is brought into contact with the first contact surface 31a and the second contact surface 32a. The trailing steel sheet pile 42 is made upright.

  Finally, in the fitting step, as shown in FIG. 14, the joint portion 52 of the subsequent steel sheet pile 42 is connected to the first contact C1 of the first contact surface 31a and the second contact C2 of the second contact surface 32a. While being in contact with the two locations, the slide is moved downward in the height direction Z. At this time, in the fitting step, as shown in FIG. 15, the fitting claw 5 a of the joint portion 52 of the subsequent steel sheet pile 42 is inserted into the fitting groove 5 b of the joint portion 51 of the preceding steel sheet pile 41, The joint portion 52 of the subsequent steel sheet pile 42 is fitted to the joint portion 51 of the preceding steel sheet pile 41.

  In the fitting process, in the inner space S of the vibration suppressing portion 3, the joint portion 52 of the subsequent steel sheet pile 42 is brought into contact with either one of the first contact C1 or the second contact C2 in a substantially vertical downward direction. The joint portion 52 of the subsequent steel sheet pile 42 may be fitted to the joint portion 51 of the preceding steel sheet pile 41 by sliding it to the front.

  As shown in FIG. 1, the steel sheet pile wall 7 is attached to the joint portion 51 of the preceding steel sheet pile 41 provided in advance in the ground 8 while suspending the succeeding steel sheet pile 42 provided later in the crane 9 or the like. It is constructed by fitting the joint portion 52 of the subsequent steel sheet pile 42.

  At this time, the succeeding steel sheet pile 42 needs to be aligned in the plane direction between the joint portion 51 of the preceding steel sheet pile 41 and the joint portion 52 of the succeeding steel sheet pile 42, but is suspended by the crane 9 or the like. Therefore, the position in the planar direction of the joint portion 52 of the subsequent steel sheet pile 42 is not stabilized by being shaken by a crane operation, strong wind, or the like.

  Here, the fitting auxiliary jig 1 to which the present invention is applied, in the first plate member 31 and the second plate member 32 of the swing suppressing portion 3, as shown in FIG. 15, the joint portion 52 of the subsequent steel sheet pile 42, The first contact C1 of the first contact surface 31a and the second contact C2 of the second contact surface 32a are brought into contact with two locations and sandwiched in the wall body orthogonal direction Y. The shaking of the trailing steel sheet pile 42 is stopped.

  The fitting assisting jig 1 to which the present invention is applied allows the first abutting surface 31a and the second abutting surface 32a to abut the joint portion 52 of the subsequent steel sheet pile 42 at two locations for crane operation or the like. The position of the joint portion 52 of the subsequent steel sheet pile 42 in the planar direction is stabilized by restraining the shaking of the subsequent steel sheet pile 42 that accompanies it. Thereby, the fitting auxiliary jig 1 to which the present invention is applied makes it easy to align the joint portion 51 of the preceding steel sheet pile 41 and the joint portion 52 of the following steel sheet pile 42, and the joint of the preceding steel sheet pile 41. It becomes possible to improve the construction efficiency of the fitting operation between the portion 51 and the joint portion 52 of the subsequent steel sheet pile 42.

  In the fitting assist jig 1 to which the present invention is applied, as shown in FIG. 9, the first plate material 31 and the second plate material 32 are substantially the same as the axial direction of the joint portion 51 of the preceding steel sheet pile 41 in the height direction Z. Since it is formed in a substantially vertical upright shape so as to be parallel, the joint portion 52 of the trailing steel sheet pile 42 is slid in a substantially vertical downward direction while contacting the joint portion 52 of the first contact C1 and the second contact C2. Can be moved. Thereby, the fitting auxiliary jig 1 to which the present invention is applied can lower the trailing steel sheet pile 42 substantially vertically, and maintains the substantially vertical descending state of the trailing steel sheet pile 42, so that the preceding steel It becomes possible to improve the construction efficiency of the fitting operation between the joint portion 51 of the sheet pile 41 and the joint portion 52 of the subsequent steel sheet pile 42.

  In addition, the fitting auxiliary jig 1 to which the present invention is applied has the joint portion 52 of the trailing steel sheet pile 42 connected to the first contact C1 of the first contact surface 31a and the second contact C2 of the second contact surface 32a. The contact of the following steel sheet pile 42 caused by the crane operation or the like is also stopped by contacting any one place, and the joint portion 51 of the preceding steel sheet pile 41 and the joint portion 52 of the following steel sheet pile 42 are used. It is possible to improve the construction efficiency of the fitting work with the steel sheet, and the trailing steel sheet pile 42 is lowered substantially vertically so that the joint part 51 of the preceding steel sheet pile 41 and the joint part 52 of the trailing steel sheet pile 42 The construction efficiency of the fitting work can be improved.

  As shown in FIG. 16, the auxiliary fitting jig 1 to which the present invention is applied includes a plurality of bolts 22 that are arranged side by side in the plane direction by sandwiching the arm portion 63 of the preceding steel sheet pile 41 between the pair of side plate materials 20. Each protrusion length from the side plate material 20 can be varied. The fitting assist jig 1 to which the present invention is applied, for example, increases the protruding length L1 of the left bolt 22 in the wall body direction X on one side of the arm portion 63 of the preceding steel sheet pile 41, and in the wall body direction. The projection length L2 of the right bolt 22 is shortened by X, the projection length L1 of the right bolt 22 is lengthened in the wall body direction X on the other side of the arm portion 63 of the preceding steel sheet pile 41, and the left bolt The protrusion length L2 of 22 is shortened.

  At this time, the fitting auxiliary jig 1 to which the present invention is applied can incline the pair of side plate members 20 of the steel sheet pile cover portion 2 without making them substantially parallel to the arm portion 63 of the preceding steel sheet pile 41. Therefore, it is possible to adjust the position in the plane direction of the vibration suppressing portion 3 connected to the steel sheet pile cover portion 2. Thereby, the fitting auxiliary jig 1 to which the present invention is applied adjusts the position of the vibration suppressing portion 3 in the planar direction, and the planar direction of the inner space S sandwiched between the first plate material 31 and the second plate material 32. The steel sheet pile wall 7 extending in a substantially curved shape in the plane direction is constructed with high accuracy by providing the preceding steel sheet pile 41 and the subsequent steel sheet pile 42 so as to have a predetermined angle in the plane direction. It becomes possible to do.

  Moreover, the fitting auxiliary jig 1 to which the present invention is applied is configured to easily adjust the position in the planar direction of the vibration suppressing portion 3 only by changing the protruding length of the plurality of bolts 22 from the side plate material 20. It becomes possible to easily align the joint portion 51 of the preceding steel sheet pile 41 and the joint portion 52 of the subsequent steel sheet pile 42 with high accuracy.

  The fitting assist jig 1 to which the present invention is applied is provided with a liner plate (not shown) between the front end portion of each bolt 22 and the arm portion 63 of the preceding steel sheet pile 41 so that the steel sheet pile cover portion 2 is It will be firmly fixed to the preceding steel sheet pile 41. Moreover, the fitting auxiliary jig 1 to which the present invention is applied is provided with a through hole (not shown) in the arm portion 63 of the preceding steel sheet pile 41, and each bolt 22 is inserted into the through hole, so that the steel sheet pile is inserted. The cover 2 is bolted to the preceding steel sheet pile 41.

  The fitting assist jig 1 to which the present invention is applied, as shown in FIG. 17, even when U-shaped steel sheet piles are used for the preceding steel sheet pile 41 and the subsequent steel sheet pile 42, The steel sheet pile cover part 2 can be easily attached to the web part 62. Furthermore, as shown in FIG. 18, the fitting assist jig 1 to which the present invention is applied has a Z-shaped steel even when a Z-shaped steel sheet pile is used for the preceding steel sheet pile 41 and the subsequent steel sheet pile 42. The steel sheet pile cover portion 2 can be easily attached to the arm portion 63 of the sheet pile.

  Thereby, the fitting auxiliary jig 1 to which the present invention is applied is not only a hat-shaped steel sheet pile, but also a plurality of bolts 22 for a steel sheet pile 4 of any shape such as a U-shaped steel sheet pile or a Z-shaped steel sheet pile. The position in the planar direction of the vibration suppressing portion 3 can be easily adjusted only by changing the protruding length from the side plate member 20. For this reason, the fitting auxiliary jig 1 to which the present invention is applied is not only capable of dealing with the joint portion 5 of the steel sheet pile 4 of any shape with a single type of fitting auxiliary jig 1 but also particularly large. The construction efficiency of the fitting work can be improved without using a guide frame or the like.

  In the fitting assist jig 1 to which the present invention is applied, as shown in FIG. 13, the expanded portion 30 that is expanded in a substantially straight line toward the side in the plane direction is formed in the inner space S of the swing suppressing portion 3. It is formed. At this time, the fitting assist jig 1 to which the present invention is applied does not require the joint portion 52 of the trailing steel sheet pile 42 to be lowered from a high position above the swing suppressing portion 3, and the swing suppressing portion 3. It becomes possible to easily insert the joint portion 52 of the subsequent steel sheet pile 42 into the inner space S from the side.

  In the fitting assist jig 1 to which the present invention is applied, since the expanded portion 30 that is expanded substantially linearly is formed, the joint portion 52 of the subsequent steel sheet pile 42 is formed in the inner space S of the vibration suppressing portion 3. A large entrance is secured. Thereby, the fitting auxiliary jig 1 to which the present invention is applied has the following steel in the inner space S of the shaking suppressing portion 3 even when the following steel sheet pile 42 is greatly shaken with the crane operation or the like. Since the joint portion 52 of the sheet pile 42 can be easily interpolated and the joint portion 52 of the subsequent steel sheet pile 42 is brought into contact with one or two surfaces of the vibration suppressing portion 3, the swing width can be gradually reduced. It is possible to easily and reliably stop the shaking of the row steel sheet pile 42.

  In particular, the fitting assist jig 1 to which the present invention is applied includes a lower portion 31c of the first contact surface 31a of the first plate member 31 and a lower portion of the second contact surface 32a of the second plate member 32 as shown in FIG. 32c is formed in the substantially taper shape which inclines toward the downward direction from the upper direction in the height direction Z, The expansion part 30 of the inner space S of the vibration suppression part 3 is ensured more largely. Thereby, even if the fitting auxiliary jig 1 to which the present invention is applied is subjected to a strong wind or the like and the trailing steel sheet pile 42 is significantly swaying, the fitting auxiliary jig 1 follows the inner space S of the sway suppressing portion 3. The joint portion 52 of the steel sheet pile 42 can be easily inserted, and the large shaking of the subsequent steel sheet pile 42 can be easily and reliably stopped.

  The fitting assist jig 1 to which the present invention is applied is a combination of a plurality of substantially flat steel plates and the like, and as shown in FIG. 4, the vibration suppressing portion 3, the steel sheet pile cover portion 2 and the rib portion 23 can be easily formed. Can be made by joining. Moreover, the fitting auxiliary jig 1 to which the present invention is applied can easily fix the steel sheet pile cover portion 2 to the preceding steel sheet pile 41 with the bolts 22. In particular, when the steel sheet pile cover 2 is fixed to the preceding steel sheet pile 41 by the magnetic force, the fitting assist jig 1 to which the present invention is applied does not require a screwing operation of the bolt 22 or the like, and is easy to attach and detach. Can be improved.

  Thereby, the fitting auxiliary jig 1 to which the present invention is applied is easily manufactured by combining a plurality of substantially flat steel plates and the like, and the steel sheet pile cover portion 2 can be easily attached to and detached from the preceding steel sheet pile 41. By fixing the same fitting auxiliary jig 1 to a plurality of steel sheet piles 4 in order and reusing it as a removable one, the increase in the manufacturing cost and material cost of the fitting auxiliary jig 1 can be suppressed. Is possible.

  As mentioned above, although the example of embodiment of this invention was demonstrated in detail, all the embodiment mentioned above showed only the example of actualization in implementing this invention, and these are the technical aspects of this invention. The range should not be construed as limiting.

1: Fitting auxiliary jig 2: Steel sheet pile cover portion 20: Side plate material 21: Bolt insertion hole 21a: Screwing portion 22: Bolt 23: Rib portion 3: Shake suppressing portion 30: Expanding portion 31: First plate material 31a : First contact surface 31b: upper part 31c: lower part 32: second plate material 32a: second contact surface 32b: upper part 32c: lower part 4: steel sheet pile 41: preceding steel sheet pile 42: following steel sheet pile 5: joint part 5a : Fitting claw 5b: fitting groove 51: joint part 52 of the preceding steel sheet pile: joint part 61 of the following steel sheet pile: flange part 62: web part 63: arm part 7: steel sheet pile wall 8: ground 9: crane A: Base end side B: Tip side X: Wall body direction Y: Wall body orthogonal direction Z: Height direction

Claims (6)

A fitting auxiliary jig for fitting a plurality of steel sheet piles at a joint part,
A steel sheet pile cover portion fixed to the preceding steel sheet pile provided in the preceding, and a swing suppression portion to which the joint portion of the subsequent steel sheet pile provided in the subsequent contact,
The sway suppressor includes a first plate member on which a first contact surface is formed and a second plate member on which a second contact surface is formed, and is sandwiched between the first plate member and the second plate member. The inner space for interpolating the joint of the subsequent steel sheet pile is formed,
The first plate member and the second plate member are arranged so as to have a predetermined angle with each other in the plane direction, and the joint portion of the subsequent steel sheet pile is placed on either the first contact surface or the second contact surface. Or a joint of a subsequent steel sheet pile after contacting the joint portion of the subsequent steel sheet pile at two locations by the first contact surface and the second contact surface. part Ri Do shall be fitted to the joint portion of the preceding sheet piles and
The first plate member and the second plate member expand in a substantially straight line from the proximal end side where the preceding steel sheet pile is provided to the distal end side where the subsequent steel sheet pile is provided toward the side in the plane direction. it is, mating support jig according to claim Rukoto Do as to form a flared portion in the space. The first plate member and the second plate member are formed such that upper portions of the first contact surface and the second contact surface are substantially parallel to a joint portion of a preceding steel sheet pile in a height direction, the lower part of either or both of the first contact surface and said second abutment surface, fitting of claim 1 Symbol mounting, characterized in that it is formed in a substantially tapered shape which inclines toward the top to the bottom Auxiliary jig. The steel sheet pile cover part sandwiches a part of the preceding steel sheet pile and is fixed to the preceding steel sheet pile with a plurality of bolts arranged side by side in one plane from one or both sides of the preceding steel sheet pile. The fitting assist jig according to claim 1 or 2, characterized in that it is characterized in that: The steel sheet pile cover part sandwiches a part of the preceding steel sheet pile, and from one or both sides of the preceding steel sheet pile, a plurality of bolts arranged side by side in the direction of the wall body to which the plurality of steel sheet piles are connected. The fitting auxiliary jig according to any one of claims 1 to 3 , wherein the fitting auxiliary jig is fixed to the jig. The said steel sheet pile cover part is comprised with the material which has magnetic force, and is fixed to a preceding steel sheet pile by magnetic force. The fitting auxiliary jig of any one of Claims 1-4 characterized by the above-mentioned. . It is a fitting method of a joint part for fitting a plurality of steel sheet piles at the joint part,
A fitting auxiliary jig having a steel sheet pile cover portion fixed to the preceding steel sheet pile provided in the preceding and a vibration suppressing portion to which a joint portion of the following steel sheet pile provided in the following is brought into contact with the preceding steel A mounting process for attaching a part of the sheet pile by sandwiching the sheet pile cover part,
The first plate member and the second plate formed in the inner space of the vibration suppressing portion sandwiched between the first plate member on which the first contact surface is formed and the second plate member on which the second contact surface is formed . In the plate material, from the base end side where the preceding steel sheet pile is provided to the distal end side where the subsequent steel sheet pile is provided, it is a spread part that is expanded in a substantially straight line in the plane direction, and the subsequent part After the joint portion of the steel sheet pile is brought into contact with any one of the first contact surface and the second contact surface, or the joint portion of the subsequent steel sheet pile is connected to the first contact surface and the first contact surface. And a fitting step of fitting the joint portion of the subsequent steel sheet pile to the joint portion of the preceding steel sheet pile after contacting the two contact surfaces with the two contact surfaces. .

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