JP2012140863A - Hat-shaped steel sheet pile with spacer portion for stacking, and method of stacking the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hat-shaped steel sheet pile with a spacer portion for stacking, and to provide a method of stacking the hat-shaped steel sheet piles.SOLUTION: A hat-shaped steel sheet pile 1 has at least one spacer portion 8 connected thereto in one body on one side and the other side, respectively, with a central axis intersecting a web portion 3 as boundary, except for joint portions. Each spacer portion 8 continuously extends in a longitudinal direction of the member. Further the hat-shaped steel sheet pile 1 located on an upper location is supported by the spacer portions 8 for stacking of the hat-shaped steel sheet pile 1 on a lower location, and a joint portion 6 of the hat-shaped steel sheet pile 1 on the upper location and the joint portion 6 of the hat-shaped steel sheet pile 1 on the lower location are stacked on each other across an interval so as not to make contact with each other.

Description

  TECHNICAL FIELD The present invention relates to steel sheet piles. Among steel sheet piles as structural members used for earth retaining, foundation structures, harbor river revetments and quay walls, and still water walls in the field of civil engineering and construction, it is possible to secure a stacking interval in particular. TECHNICAL FIELD The present invention relates to a hat-shaped steel sheet pile having a proper interval holding part and a stacking method thereof.

  Conventionally, various steel sheet piles such as hat-shaped steel sheet piles or U-shaped steel sheet piles are known as steel sheet piles, but the following problems (1) and (2) are problems when stacking these steel sheet piles. It is known that there is.

(1) In particular, as shown in FIG. 31 or FIG. 32, the hat-shaped steel sheet pile 2 is a hat-shaped steel sheet pile 2 in which the height levels of the left and right joint portions are different, and the joint portions having different heights on the left and right sides. In the case of stacking (FIGS. 33 to 34 show the case of stacking), the joint portions 6 in the upper and lower hat-shaped steel sheet piles are in contact with each other, and the joint portions 6 cannot be kept horizontal. It is known that there is a problem that is easily deformed.
In addition, as shown in FIG. 30, the hat-shaped steel sheet pile 2 as described above accumulates inclination every time the hat-shaped steel sheet pile 2 is stacked, so that the stacking stability is low and the stack cannot be stacked high. It is also known that there is a problem of inefficiency.

  Further, as shown in FIG. 37, (2) even if the U-shaped steel sheet pile 23 is not in contact with the joint portion, as the number of stacked stages increases, the steel sheet piles are stuck by the wedge action due to the weight of the steel sheet pile. It is also known that separation of sheet piles may be difficult.

As a technique for solving the problem (1), steel sheet piles such as the following (A) and (B) are known.
(A) A steel sheet pile (for example, refer to Patent Document 1) that can make the stacking interval between the steel sheet piles constant by adjusting the inclination of the flange portion in the steel sheet pile, or (B) the length of the flange portion. A steel sheet pile (see, for example, Patent Document 2) in which a concave stepped portion for seating the joint portion of the stacking counterpart in the direction is also known.

  Further, as a technique for solving the problem (2), there is the following technique (C). (C) A U-shaped steel sheet pile (for example, see Patent Document 3 and Japanese Utility Model Publication No. 62-99631) in which a protrusion for seating the joint portion of the stacking counterpart is formed in the longitudinal direction of the flange portion of the steel sheet pile. Are known.

  In addition to the above, as shown in FIG. 29 or FIG. 35 and FIG. 36, in order to maintain the stacking interval of the steel sheet piles, the wood 24 is simply placed on the web portion 3 or the arm portion 5 of the hat-shaped steel sheet pile 2 and stacked. Methods are also known.

Next, the feature on the shape of the hat-shaped steel sheet pile 2 will be described with reference to FIGS. 31 and 32.
The hat-shaped steel sheet pile 2 of the illustrated form is integrally provided with flange portions 4 so as to be inclined outwardly on both sides of the web portion 3, and the arm portion is integrally formed with the flange portion 4 and parallel to the web portion 3. 5, a joint portion 6 formed by hot rolling at the tip of the arm portion 5 is provided, and one joint portion 6 and the other joint portion 6 of the left and right joint portions are It has a symmetrical shape.
Further, the joint portion 6 formed integrally with the arm portion 5 includes a projecting portion that projects in a direction perpendicular to the flat surface of the arm portion 5, and is formed in the joint opening groove 7 on the joint opening groove 7 side. The base end side projecting portion 19 connected to the base end portion of the joint main body portion 10 forming the joint opening groove 7 on the side opposite to the joint opening groove 7 and the projecting portion formed by the joint main body portion 10. The amount of protrusion T1 by the side protrusion 19 and the amount of protrusion T2 upward of the joint body 10 at the upper part of the joint 6 are different from each other.
Therefore, when such hat-shaped steel sheet piles 2 are stacked and temporarily placed, as shown in FIGS. 33 and 34, the joint portion 6 at the end in the width direction comes into contact with the top and bottom, so the joint portion 6 There is a risk of deformation or damage. Moreover, the sheet piles piled up and down are in contact with the claw tip portion and the back side of the claw tip portion, and the base end side protruding portion 19 in the steel sheet pile 2 positioned at the upper position is a joint in the steel sheet pile 2 positioned at the lower position. Since the steel sheet pile width position is located slightly below the main body portion 10 and can be engaged with the main body portion 10, the joint portion 6 of the steel sheet pile 2 positioned at the upper side is opposite to the above engageable direction. It has the characteristic of being a steel sheet pile 2 with directional characteristics that may collapse in the direction (direction indicated by the arrow).

The hat-shaped steel sheet pile 2 is a rolled steel material by hot rolling, and is a steel sheet pile in which the joint portion 6 is formed into a complicated shape and the strength of the joint portion 6 is increased. The steel sheet pile manufactured by cold bending of the steel sheet has enhanced bending rigidity as a whole steel sheet pile including the joint portion.
The hat-shaped steel sheet pile 2 is a steel sheet pile in which the joint portion 6 is formed into a complicated shape and the fitting strength is increased so that the joint portions 6 do not separate from each other. The steel sheet pile by cold forming formed by processing is a steel sheet pile manufactured by a different method.

  In addition, it is not intended to ensure the stacking stability of steel sheet piles, and is not intended for hat-shaped steel sheet piles, but the following (D) or (E) is a technique related to the shape of the corners of steel sheet piles. Such techniques are also known. (D) Technology for flattening corners of U-shaped steel sheet piles to reduce driving resistance (see, for example, Patent Document 4), or (E) Cross section by providing extended portions at corners of Z-shaped steel sheet piles A technique for increasing the rigidity (see, for example, Patent Document 5) is also known.

JP 2005-105552 A JP 2005-98024 A Japanese Utility Model Publication No. 62-99631 JP-T-2001-502767 Special table 2000-508728 Japanese Patent No. 3458109

  By adjusting the inclination of the flange portion in the steel sheet pile of (A) above, the joint of the upper and lower hat-shaped steel sheet piles does not come into contact with each other in the method of making the stacking interval between the steel sheet piles constant. When an attempt is made, for example, to consider two types of commercially available hat-shaped steels having different heights as shown in FIGS. 38 (a) and 38 (b). ) To (a-3) or (b-1) to (b-3), the flange angle that is the inclination angle of the flange portion is, for example, about 75 ° to 85 °, preferably 80 ° to 85 °. And get bigger. It is known that the inclination of the flange portion is a factor for exhibiting efficient cross-sectional performance (see, for example, Patent Document 6), and the flange angle of a hat-shaped steel sheet pile provided for practical use is patented. It is smaller than the shape shown in Document 1. Limiting the flange angle to a large one hinders efficient cross-sectional performance (higher cross-section performance with a small steel weight). Moreover, since the width dimension of a hat-shaped steel sheet pile will become small when a flange angle becomes large, there exists a problem that the number of placing per unit length increases. Accordingly, the inclination angle of the flange portion positioned on both sides of the web portion in the hat-shaped steel sheet pile is less than 75 °, for example, less than 75 ° to 40 °, for example, in order to reduce the number of placements and constitute an economical wall body. More preferably, an inclination angle of 65 ° to 45 ° is desirable because the number of shots can be reduced and an economical sheet pile wall or the like can be constructed.

  Further, the techniques (B) and (C) relate to the U-shaped steel sheet pile, but as in the technique 1 of (A), this is applied to a hat-shaped steel sheet pile as shown in FIG. Considering the case where a step or protrusion 21 having a flat support surface 20 for seating the upper hat-shaped steel sheet pile 2 at the time of stacking is formed, the conventional hat-shaped steel sheet pile of the technique (A) is more The hat-shaped steel sheet pile has a small flange angle, and the flange interval G between the upper hat-shaped steel sheet pile 2 and the lower hat-shaped steel sheet pile 2 is large when stacked. For this reason, if it sits on the level | step difference or protrusion 21, since the hat-shaped steel sheet pile 2 located in the upper part will move horizontally by the part where the flange space | interval G becomes large, there exists a problem that there exists a danger of collapse of a load. .

  The stack formed in the hat-shaped steel sheet pile only by providing a flat portion inside the corner portion as in the technique (D) or only by providing an extension portion in the corner portion as in the technique (E). The required stacking interval cannot be ensured for the problem that joints sometimes come into contact with each other.

  In the method of the technique (C), after hot rolling using a perforated roll, rolling using left and right protruding hard rolls is added, so that there is a problem that the manufacturing cost and the equipment cost for the additional roll increase. is there.

  Steel sheet piles are transported using trucks or ships. However, in the method of placing a spacing member such as timber on the web part, the spacing part is used as a web part when unloading and transshipping at construction sites and transportation relay points. There is a problem that it becomes inefficient because the trouble of re-installation is generated each time.

  An object of this invention is to provide the hat-shaped steel sheet pile provided with the space | interval holding | maintenance part for stacking which eliminated the said subject advantageously, and its stacking method.

In order to solve the above-mentioned problem advantageously, in the hat-shaped steel sheet pile provided with the stacking interval holding portion of the first invention, a pair of flange portions are continuously provided at both ends of the web portion, and at the other end of the flange portion. In a hat-shaped steel sheet pile having a cross-sectional hat shape in which an arm portion is continuously provided and a joint portion is provided at the tip of the arm portion, and the web portion and the flange portion are connected to each other. Only one intermediate portion between a corner portion located in the installation portion and a corner portion located in the connection portion between the arm portion and the flange portion, with the center of gravity axis intersecting the web portion as one boundary and the other Further, at least one interval holding portion for stacking that is continuous in the longitudinal direction of each member is integrally provided.
Moreover, in the hat-shaped steel sheet pile provided with the interval holding part for stacking according to the second invention, a pair of flange parts are connected to both ends of the web part, and an arm part is connected to the other end of the flange part, A hat-shaped steel sheet pile with a joint section provided at the tip of the arm section, and a hat-shaped steel sheet pile manufactured by hot rolling, a portion excluding the joint section, and a center of gravity axis intersecting the web section As one of the boundaries, at least one stacking interval holding portion that is continuous in the longitudinal direction of the member is integrally provided on one side and the other side by increasing the plate thickness of the member.
Further, in the third invention, in the hat-shaped steel sheet pile provided with the stacking interval holding part of the second invention, the corner part located at the connecting part between the web part and the flange part, or the arm part, The corner portion located at the connecting portion with the flange portion is provided with a stacking interval holding portion for the corner portion formed in a cross-sectional convex shape toward the outer side or the inner side of the groove of the hat-shaped steel sheet pile. It is characterized by being.
According to a fourth aspect of the present invention, in the hat-shaped steel sheet pile provided with the stacking interval holding portion according to the second aspect of the invention, the corner portion located at the connecting portion between the web portion and the flange portion, or the arm portion and the flange The other hat-shaped steel sheet pile facing the corner of one of the upper and lower hat-shaped steel sheet piles in the case where the stacking angle holding portion is not provided in the corner portion located in the continuous portion with the section. The straight line that is in contact with the R part at the corner part of the straight line and extends from the flange part to the web part, wherein the angle A formed with the web is greater than 0 degree and less than the flange angle formed between the flange part and the arm part. Is provided with a stacking interval holding portion for a corner portion protruding inward at a corner portion of the one steel sheet pile.
In the fifth invention, in the hat-shaped steel sheet pile provided with the stacking interval holding portion according to any one of the first to fourth inventions, the hat is not provided in each flange portion on both sides. When stacking shaped steel sheet piles, stacking interval holding portions for the flange portions having a height dimension larger than the flange interval (G1) in the direction perpendicular to the flange between the flanges of the upper and lower hat-shaped steel sheet piles are integrated. It is provided.
Further, in the sixth invention, in the hat-shaped steel sheet pile provided with the stacking interval holding portion according to any one of the second to fourth inventions, the hat is not provided in each arm portion on both sides. Stacking interval holding unit for arm portions having a height dimension larger than the arm portion interval (G2) in the direction perpendicular to the arm portions between the arm portions of the upper and lower hat-shaped steel sheet piles when the steel sheet piles are stacked Is provided integrally.
In the seventh invention, in the hat-shaped steel sheet pile provided with the stacking interval holding portion according to any one of the second to fourth inventions, the hat-shaped steel sheet pile is used when the web portion is not provided with the stacking interval holding portion. In the case of stacking, stacking interval holding portions for web portions having a height dimension larger than the web portion spacing (G3) in the direction perpendicular to the web portions between the web portions of the upper and lower hat-shaped steel sheet piles are integrally provided. It is characterized by that.
In the eighth invention, in the hat-shaped steel sheet pile provided with the stacking interval holding part according to any one of the first to seventh inventions, the corner part located at the continuous part of the web part and the flange part, The space | interval holding | maintenance part for stacking is integrally provided in the front-and-back both surfaces of the corner part, web part, flange part, or arm part which are located in the connection part of an arm part and the said flange part, It is characterized by the above-mentioned.
In the method of stacking the hat-shaped steel sheet piles having the stacking interval holding portions according to the ninth aspect of the invention, in the method of stacking the hat-shaped steel sheet piles having the stacking interval holding portions of any of the first to eighth inventions up and down. The hat-shaped steel sheet pile positioned at the upper level is supported by the stack holding section of the hat-shaped steel sheet pile positioned at the lower level, and the joint section of the hat-shaped steel sheet pile positioned at the higher level and the hat-shaped steel position positioned at the lower level The sheet piles are stacked through a gap so as not to contact the joints of the sheet piles.
In the stacking method of the hat-shaped steel sheet piles for stacking of the tenth invention, the hat-shaped steel sheet pile groups stacked by the hat-shaped steel sheet pile stacking method having the stacking interval holding portion of the ninth invention, and sleepers In the stacking method of the hat-shaped steel sheet piles that are alternately stacked, when the hat-shaped steel sheet piles in which the joints are in contact with the sleepers in the group of hat-shaped steel sheet piles do not maintain the horizontal state, the other hat-shaped steel sheet piles are set to the horizontal state. By doing so, the sleeper placed on the hat-shaped steel sheet pile is held in a horizontal state.

According to the present invention, in a hat-shaped steel sheet pile manufactured by hot rolling, at least one member on each of the one and the other, which is a portion excluding the joint portion, with the center of gravity axis intersecting the web portion as a boundary By providing a stacking interval holding part that is continuous in the longitudinal direction, a constant stacking interval can be ensured when stacking hat-shaped steel sheet piles regardless of the angle of the flanges of the hat-shaped steel sheet piles as in the past. The gap can be reliably formed between the joint portions of the upper and lower hat-shaped steel sheet piles having the interval holding portion, and deformation or damage of the joint portion due to these interferences can be prevented.
Further, since the interval holding portion is provided in advance in each hat-shaped steel sheet pile, it is not necessary to stack the wood between the sheet piles manually or the like as in the prior art, so that the stacking work is facilitated. Moreover, it can be set as the hat-shaped steel sheet pile which provided the space | interval holding | maintenance part continuously by hot rolling, without preparing and processing a new special perforated roll.
Further, according to the first invention, with respect to the portion excluding the joint portion, the center of gravity axis (left and right center of gravity axis) that balances the left and right weights has one or more spacing holding portions on each of the left side and the right side, It can be set as the hat-shaped steel sheet pile provided with the space | interval holding | maintenance part for stacking | stacking which can support an upper steel sheet pile by at least 2 points | pieces.
Moreover, when not providing the space | interval holding | maintenance part for stacking | stacking, when a hat-shaped steel sheet pile is stacked, the height dimension larger than the flange space | interval (G1) of the direction orthogonal to the flange between the flanges of the upper and lower hat-shaped steel sheet piles, Alternatively, the height dimension is larger than the arm part interval (G2) in the direction perpendicular to the arm part between the arm parts, or the height dimension is larger than the inter-web distance (G3) in the direction perpendicular to the web between the web parts. The stacking interval holding portion is positioned at the corner portion positioned at the connecting portion between the web portion and the flange portion, the corner portion positioned at the flange portion, or the corner portion positioned at the connecting portion between the flange portion and the arm portion. When stacking hat-shaped steel sheet piles, it is possible to reliably maintain a certain stacking interval, and to connect the joint portions of the upper and lower hat-shaped steel sheet piles with the interval holding portions to each other. It is possible to prevent the deformation or damage of the joint portion by these interference reliably form a gap.
In addition, a stacking interval holding portion is provided at a corner portion positioned at the connecting portion between the web portion and the flange portion, and at a corner portion positioned at the connecting portion between the arm portion and the flange portion. In the case where the hat-shaped steel sheet piles are stacked in the absence, the R of the corner (outer corner) of the other hat-shaped steel sheet pile facing the corner (for example, the inner corner) of one of the upper and lower hat-shaped steel sheet piles A straight line in contact with the part, including a straight line extending from the flange part to the web part, wherein the angle A formed with the web is greater than 0 degrees and less than the flange angle formed between the flange part and the arm part. When stacking hat-shaped steel sheet piles by providing a stacking interval holding section for corners projecting inward at the corner (inner corner) of the one steel sheet pile, a constant stacking interval Can be held securely, It is possible to prevent the deformation or damage of the joint portion by these interference formed reliably a gap between the joint portion mutually upper and lower hat-shaped steel sheet pile having a septum holder.
In the above-described case, at the corner portion of the continuous portion of the web portion and the flange portion or the continuous portion of the flange portion and the arm portion, a spacing holding portion that protrudes outside or inside the groove of the hat-shaped steel sheet pile is provided. By providing at least two corners, the joints can be connected to a hat-shaped steel sheet pile that is not limited to the inclination of the flange and does not become horizontal when flatly placed. It is possible to keep the stacking interval as much as possible, and efficient stacking is possible.
In order to maintain the spacing when stacked, it is sufficient to provide convex or concave spacing holders at at least two corners, but with hat-shaped steel sheet piles, spacing is maintained at up to four corners. The load can be distributed by supporting the four points, the cross-sectional deformation of the steel sheet pile due to the load can be reduced, and more stable steel sheet piles can be stacked.
In the case of providing a convex stacking interval holding portion, in order to improve the cross-sectional performance efficiently, the corner portion is more distant from the neutral shaft than the flange portion (the outermost edge). ), The bending rigidity is increased and it can contribute to the improvement of the efficient cross-sectional performance.
Further, when the stacking interval holding portion is a hat-shaped steel sheet pile provided with a stacking interval holding portion integrally provided on both the front and back surfaces of the steel sheet pile, the stacking interval holding portion on the front side or the stacking interval on the back side A hat-shaped steel sheet pile having a stacking interval holding portion can be stacked using the holding portion.
Further, according to the stacking method of the present invention, the hat-shaped steel sheet pile positioned at the upper level is supported by the stacking interval holding portion in the hat-shaped steel sheet pile positioned at the lower level, and the joint portion in the hat-shaped steel sheet pile positioned at the upper level. And stacking through a gap so that the joints in the hat-shaped steel sheet pile located in the lower position do not come into contact with each other. The hat-shaped steel sheet pile with the stacking interval holding part is securely supported in a stable state, and the joints in the hat-shaped steel sheet pile with the upper and lower stacking interval holding parts interfere with each other, causing deformation or damage. Can be stacked without any problems.
Moreover, according to the stacking method of the present invention, in the stacking method of hat-shaped steel sheet piles in which a plurality of stacked hat-shaped steel sheet pile groups and sleepers are stacked alternately, one stacked hat-shaped steel sheet pile does not maintain a horizontal state. In this case, on the hat-shaped steel sheet pile that does not maintain the horizontal state by making the sleeper placed on the hat-shaped steel sheet pile horizontal by making the hat-shaped steel sheet pile stacked in this state horizontal The hat-shaped steel sheet piles or sleepers placed on can be held in a horizontal state, and the hat-shaped steel sheet piles can be stacked in a stable state.

(A) And (b) is a front view which shows the state which piled up the 1st Embodiment of the hat-shaped steel sheet pile provided with the space | interval holding | maintenance part for stacking of this invention, and the three hat-shaped steel sheet piles. (A) And (b) is a front view which shows the state which piled up the 2nd Embodiment of the hat-shaped steel sheet pile provided with the space | interval holding | maintenance part for stacking of this invention, and the three hat-shaped steel sheet piles. It is a front view which shows 3rd Embodiment of the hat-shaped steel sheet pile provided with the space | interval holding | maintenance part for stacking of this invention, and the state which piled up the three hat-shaped steel sheet piles. (A) And (b) is explanatory drawing for demonstrating the hat-shaped steel sheet pile of this invention. (A) And (b) is explanatory drawing for demonstrating the hat-shaped steel sheet pile of this invention. (A)-(f) is explanatory drawing for demonstrating the hat-shaped steel sheet pile of this invention. It is a front view which shows the state which piled up 4th Embodiment and 5th Embodiment of the hat-shaped steel sheet pile provided with the space | interval holding | maintenance part for stacking of this invention, and each hat-shaped steel sheet pile. (A) And (b) is explanatory drawing for demonstrating the hat-shaped steel sheet pile of this invention shown in FIG. (A)-(f) is explanatory drawing for demonstrating the hat-shaped steel sheet pile of this invention. (A) And (b) is explanatory drawing for demonstrating the hat-shaped steel sheet pile of this invention. (A) And (b) is a front view which shows the state which piled up the hat-shaped steel sheet pile 6th Embodiment and 7th Embodiment provided with the space | interval holding | maintenance part for stacking of this invention, and each hat-shaped steel sheet pile. is there. (A) And (b) is a front view which shows the state which piled up eight each of the 8th Embodiment and 9th Embodiment of the hat-shaped steel sheet pile provided with the space | interval holding | maintenance part for stacking of this invention, and each hat-shaped steel sheet pile. is there. (A) And (b) is a front view which shows the state which piled up the 10th Embodiment and 11th Embodiment of the hat-shaped steel sheet pile provided with the space | interval holding | maintenance part for stacking of this invention, and each hat-shaped steel sheet pile. is there. (A) And (b) is a front view which shows the state which accumulated 12 sheets of 12th Embodiment and 13th Embodiment of the hat-shaped steel sheet pile provided with the space | interval holding | maintenance part for stacking of this invention, and each hat-shaped steel sheet pile. is there. (A) And (b) is a front view which shows the state which piled up 14 each of 14th Embodiment and 15th Embodiment of the hat-shaped steel sheet pile provided with the space | interval holding | maintenance part for stacking of this invention, and each hat-shaped steel sheet pile. is there. (A) And (b) is a front view which shows the state which piled up the 16th Embodiment and 17th Embodiment of the hat-shaped steel sheet pile provided with the space | interval holding | maintenance part for stacking of this invention, and each hat-shaped steel sheet pile. is there. (A) And (b) is a front view which shows the state which accumulated 18 sheets of 18th Embodiment and 19th Embodiment of the hat-shaped steel sheet pile provided with the space | interval holding | maintenance part for stacking of this invention, and each hat-shaped steel sheet pile. is there. (A) And (b) is a front view which shows the state which piled up the 20th Embodiment and 21st Embodiment of the hat-shaped steel sheet pile provided with the space | interval holding | maintenance part for stacking of this invention, and each hat-shaped steel sheet pile. is there. (A) And (b) is a front view which shows the state which piled up each hat-shaped steel sheet pile 25th Embodiment and 23rd Embodiment of the hat-shaped steel sheet pile provided with the space | interval holding | maintenance part for stacking | stacking of this invention. is there. (A) And (b) is a front view which shows the state which piled up the 24th Embodiment and 25th Embodiment of the hat-shaped steel sheet pile provided with the space | interval holding | maintenance part for stacking of this invention, and each hat-shaped steel sheet pile. is there. (A) And (b) is a front view which shows the state which piled up the 26th Embodiment and 27th Embodiment of the hat-shaped steel sheet pile provided with the space | interval holding | maintenance part for stacking of this invention, and each hat-shaped steel sheet pile. is there. (A) And (b) is a front view which shows the state which piled up the 28th Embodiment and 29th Embodiment of the hat-shaped steel sheet pile provided with the space | interval holding | maintenance part for stacking of this invention, and each hat-shaped steel sheet pile. is there. It is a front view which shows 30th Embodiment of the hat-shaped steel sheet pile provided with the space | interval holding | maintenance part for stacking of this invention, and the state which accumulated the five hat-shaped steel sheet piles. (A) And (b) is a front view which shows the state which piled up the 31st Embodiment and 32nd Embodiment of the hat-shaped steel sheet pile provided with the space | interval holding | maintenance part for stacking of this invention, and each hat-shaped steel sheet pile. is there. (A) And (b) is a front view which shows the state which piled up the hat-shaped steel sheet pile 33rd Embodiment and 34th Embodiment provided with the space | interval holding | maintenance part for stacking of this invention, and five each hat-shaped steel sheet piles. is there. (A) And (b) is a front view which shows the state which piled up the 35th Embodiment and 36th Embodiment of the hat-shaped steel sheet pile provided with the space | interval holding | maintenance part for stacking of this invention, and each hat-shaped steel sheet pile. is there. It is explanatory drawing for demonstrating the flange angle in a hat-shaped steel sheet pile. It is a front view for demonstrating the 1st example of the conventional hat-shaped steel sheet pile. It is explanatory drawing in the case of stacking the conventional hat-shaped steel sheet pile using a wooden spacing material. It is explanatory drawing at the time of stacking the conventional hat-shaped steel sheet pile without using a space | interval maintenance material. (A) (b) (c) is a partially vertical side view. It is a front view which shows the hat-shaped steel sheet pile used in this invention. It is a front view which expands and shows the joint part in FIG. It is a front view which shows the form in the case of stacking the conventional hat-shaped steel sheet pile. It is a front view which shows the other form in the case of stacking the conventional hat-shaped steel sheet pile. It is a front view which shows the form in the case of stacking the conventional hat-shaped steel sheet pile using a timber. It is a front view which shows the other form in the case of stacking the conventional hat-shaped steel sheet pile using a timber. It is a side view which shows the form in the case of stacking the conventional U-shaped steel sheet pile. It is explanatory drawing about the flange angle in the case of making the stacking | stacking space | interval between steel sheet piles constant by adjusting the inclination of the flange part in a steel sheet pile.

  Next, the present invention will be described in detail based on the illustrated embodiment.

First, the characteristics of the shape of the hat-shaped steel sheet pile 2 that is not provided with the stacking interval holding portion will be described first with reference to FIG. 31 and FIG.
The hat-shaped steel sheet pile 2 of the illustrated form is integrally provided with flange portions 4 so as to be inclined outwardly on both sides of the web portion 3, and the arm portion is integrally formed with the flange portion 4 and parallel to the web portion 3. 5, a joint portion 6 formed by hot rolling at the tip of the arm portion 5 is provided, and one joint portion 6 and the other joint portion 6 of the left and right joint portions are It has a symmetrical shape.
Further, the joint portion 6 formed integrally with the arm portion 5 includes a projecting portion that projects in a direction perpendicular to the flat surface of the arm portion 5, and is formed in the joint opening groove 7 on the joint opening groove 7 side. The base end side projecting portion 19 connected to the base end portion of the joint main body portion 10 forming the joint opening groove 7 on the side opposite to the joint opening groove 7 and the projecting portion formed by the joint main body portion 10. The amount of protrusion T1 by the side protrusion 19 and the amount of protrusion T2 upward of the joint body 10 at the upper part of the joint 6 are different from each other.
Therefore, when such hat-shaped steel sheet piles 2 are stacked and temporarily placed, as shown in FIGS. 33 and 34, the joint portion 6 at the end in the width direction comes into contact with the top and bottom, so the joint portion 6 There is a risk of deformation or damage. Moreover, the sheet piles piled up and down are in contact with the claw tip portion and the back side of the claw tip portion, and the base end side protruding portion 19 in the steel sheet pile 2 positioned at the upper position is a joint in the steel sheet pile 2 positioned at the lower position. Since the steel sheet pile width position is located slightly below the main body portion 10 and can be engaged with the main body portion 10, the joint portion 6 of the steel sheet pile 2 positioned at the upper side is opposite to the above engageable direction. It has the characteristic of being a steel sheet pile 2 with directional characteristics that may collapse in the direction (direction indicated by the arrow).

  Next, common features of the hat-shaped steel sheet pile having the stacking interval holding portion of the present invention will be described. Also in the present invention, it is a hat-shaped steel sheet pile manufactured by hot rolling as described above, and a pair of flange portions are connected to both ends of the web portion, and an arm portion is connected to the other end of the flange portion. In addition, a hat-shaped steel sheet pile having a cross-sectional hat shape in which a joint portion is provided at the tip of the arm portion and manufactured by hot rolling.

  And as shown to FIG. 1 and reference FIG. 4 (a) (it shows to the hat-shaped steel sheet pile 2 in FIG. 4a), in the hat-shaped steel sheet pile 1 provided with the space | interval holding | maintenance part for stacking | stacking of this invention, the space | interval for stacking | stacking is hold | maintained. The part 8 is a part excluding the joint part 6, and is stacked for at least one member in the longitudinal direction on one side (left side) and the other side (right side) with the center of gravity G intersecting the web part as a boundary. The interval holding part is provided integrally.

More specifically, the stacking interval holding portions may be provided on the web portion 3 in FIG. 4B on the left and right sides as indicated by the one-dot chain line with the center of gravity axis G as a boundary. One each may be provided on the flange portion 4 in the figure as indicated by a one-dot chain line, and one may be provided on each arm portion 5 in the figure as indicated by a two-dot chain line. In the drawing, the corner holding part 9 is positioned at the corner 9 positioned at the connecting part of the web part 3 and the flange part 4 or the corner part 11 positioned at the connecting part of the flange part 4 and the arm part 5. Is provided.
In addition, in the hat-shaped steel sheet pile 1 provided with the space | interval holding | maintenance part for stacking | stacking in this invention, it is a site | part except the joint part 6, Comprising: One (left side) and the other on the boundary of the gravity axis G which cross | intersects the said web part It is only necessary to integrally provide at least one stacking interval holding portion continuous in the longitudinal direction of each member on the (right side), one of which is the web portion 3 or the flange portion 4 or the arm portion 5 with the center of gravity axis G as a boundary. Is at least one of the corners 9 and 11, with the other side of the center of gravity axis G being at least one of the web 3 or the flange 4 or the arm 5 and further the corners 9 and 11 If it is.
One interval holding part 8 for stacking may be on one side (surface opposite to the groove) of the hat-shaped steel sheet pile 1, and the other may be on the back side (back side on the groove side). In the case where a large number of stacking interval holding portions 8 are provided, the stacking interval holding portions 8 may be provided at the same position on the front and back sides, such as symmetrical on the front and back sides, even if the positions of the stacking interval holding portions 8 are shifted on the front and back sides of the steel sheet pile.

(First embodiment)
And in the hat-shaped steel sheet pile 1 provided with the space | interval holding | maintenance part for stacking of 1st Embodiment shown to Fig.1 (a) (b), the corner part located in the connection part of the said web part and the said flange part And the hat-shaped steel sheet pile 1 provided with the space | interval holding | maintenance part for stacking of the form which provided the space | interval holding | maintenance part 8 for stacking integrally in the corner part located in the connection part of the said arm part and the said flange part, Has been.
The height dimension H of the stacking interval holding portion 8 is such that the upper and lower joint portions 6 are in contact with each other when the hat-shaped steel sheet piles are stacked in the case where the stacking interval holding portion is not provided in FIG. As shown, the height dimension H is larger than the flange interval (G1) in the direction perpendicular to the flange between the flanges of the upper and lower hat-shaped steel sheet piles 2 in such a case. It is set as the hat-shaped steel sheet pile 1 provided with the space | interval holding | maintenance part for stacking which provided the space | interval holding | maintenance part 8 for stacking | stacking for the corner | angular part which has H integrally.

  In the case where the upper and lower joint portions 6 are in contact with each other when the hat-shaped steel sheet piles are stacked in the case where the stacking interval holding portion 8 is not provided, as described above, there is a flange interval (G1) between the flanges, The web portions 3 have a web portion interval (G2), and the arm portions 5 have an arm portion interval (G3). Therefore, in the case where the stacking interval holding unit 8 is provided in the above-described part, the stacking interval holding unit 8 having a height larger than these heights may be used.

In FIG. 1A, the stacking interval holding portion 8 is provided at the corner portion 9 where the web portion 3 and the flange portion 4 are continuously provided so as to protrude almost horizontally from the web portion 3. A state in which three hat-shaped steel sheet piles 1 each having a stacking interval holding portion are stacked is shown, and by the stacking interval holding portion 8 in the hat-shaped steel sheet pile 1 having a lower stacking interval holding portion, The flange portion 4 of the hat-shaped steel sheet pile 1 having a stacking interval holding portion positioned at the upper level is supported.
In addition, since the front-end | tip part 13 of the said space | interval holding | maintenance part 8 for stacking is made into the cross-sectional arc shape or the cross-sectional arc shape, the hat-shaped steel sheet pile 1 provided with the space | interval holding | maintenance part for stacking located in the lower part is incline somewhat Of the hat-shaped steel sheet pile 1 having the stacking interval holding portion positioned at the upper side, by tilting the hat-shaped steel sheet pile 1 having the stacking interval holding portion positioned at the upper side in the reverse direction. The upper surface can be arranged horizontally (the same applies to the following embodiments).

  When the hat-shaped steel sheet piles 1 having the stacking interval holding portions are stacked and arranged, the web portions 3 may be stacked on the lower side as shown in FIG. In the stacked form, the heights of the G1 to G3 and the stacking interval holding unit 8 are the same.

(Second Embodiment)
In FIG. 2, the stacking interval is maintained so that the corner portion 11 located at the connecting portion of the flange portion 4 and the arm portion 5 projects almost horizontally from the arm portion 5 toward the groove 12 side of the hat-shaped steel sheet pile. The hat-shaped steel sheet pile 1 is provided with a stacking interval holding portion in which the portions 8 are integrally provided. Moreover, in FIG.2 (a), the state where three pieces of the hat-shaped steel sheet piles 1 provided with such a space | interval holding | maintenance part for stacking were piled up so that the arm part 5 may become a lower side is shown in FIG.2 (b). A state in which three web portions 3 are stacked is shown.

  In addition, the sleeper 16 is used in the stacking form as shown in FIG. 1 or FIG. 2 or as shown in FIG. 33 in the support part 15 such as the ground or the concrete support board in the temporary storage site such as the construction site or the transfer relay site. The stacked form can be similarly applied to the following embodiments. In FIG. 33, on the upper surface of each sleeper 16, a block-like horizontal holding member is placed on the portion corresponding to the back surface of the arm portion 5 of the hat-shaped steel sheet pile 1, as necessary. Each arm part 5 in the hat-shaped steel sheet pile 2 at the lowest end (in the case of the present invention, the hat-shaped steel sheet pile 1 having the interval holding part 8) is placed, and the joint part 6 is in a floating state. .

(Third embodiment)
In the form shown in FIG. 3, a stacking interval holding portion 8 is provided on the outer surface of the flange portion 4 outside the groove 12. The stacking interval holding unit 8 may be at any position in the width direction of the flange portion 4, but the stacking interval holding unit 8 may be provided at a symmetrical position, and the stacking interval holding unit 8 is formed by hot rolling. In this case, if the cross-sectional shape changes smoothly, it is advantageous because the formation becomes easy in hot rolling.

In addition, the said hat-shaped steel sheet pile 2 provided with the space | interval holding | maintenance part for stacking used by this invention is a rolled steel material by a hot rolling process, the joint part 6 is shape | molded in a complicated shape, and the intensity | strength of the joint part 6 is made. It is a steel sheet pile that has been raised, and the steel sheet pile made by cold bending a conventionally known steel sheet has an increased bending stiffness as a whole steel sheet pile including the joint portion.
The hat-shaped steel sheet pile 2 including the stacking interval holding portion is a rolled steel material obtained by hot rolling, and has a mating strength so that the joint portion 6 is formed into a complicated shape and the joint portion 6 is not separated from each other. Is a steel sheet pile manufactured by a different method from a steel sheet pile by cold forming formed by cold bending a single steel sheet.

As shown in FIG. 6 (a), the stacking interval is maintained in the corner portions 9 and 11 located at the connection portion between the web portion 3 and the flange portion 4 (or the connection portion between the flange portion 4 and the arm portion). When the portion 8 is provided, as shown in FIG. 5B, the web portion 3 or the flange portion 4 is made thicker, and the stacking interval holding portion 8 having a convex cross section continuous in the longitudinal direction of the member on the outer side of the groove. As shown in FIG. 3C, a stacking interval holding portion 8 having a convex cross section continuous in the longitudinal direction of the member may be provided inside the groove.
Moreover, as shown in (d), you may make it provide the convex shaped space | interval holding | maintenance part 8 for stacking | stacking, without changing plate | board thickness. Further, as shown in FIG. 4E, in the corner portion 9 which is a continuous portion of the web portion 3 and the flange portion 4 so as to protrude toward the groove 12, the stacking is performed so as to protrude toward the groove 12 side. An interval holding unit 8 may be provided.
Moreover, as shown in FIG.6 (f), in the hat-shaped steel sheet pile 1 provided with the space | interval holding | maintenance part for stacking | stacking, you may make it provide the space | interval holding | maintenance part 8 for stacking on the both surfaces of a steel sheet pile. In the corner portion 9 between the web portion 3 and the flange portion 4, the stacking interval holding portion 8 may be provided inside the groove 12, and the stacking interval holding portion 8 may be provided in parallel outside the groove 12. . As described above, the stacking interval holding portions 8 may be provided on both sides of the groove 12. The same applies to the corner portion 11 located at the connection portion between the flange portion 4 and the arm portion 5.
In addition, the form of FIG.6 (f) is not only the corner part 9 located in the connection part of the said web part 3 and the said flange part 4, but the connection part of the said arm part 5 and the said flange part 4. FIG. You may make it provide the space | interval holding | maintenance part 8 for stacking | stacking in the front and back both surfaces of the corner part 11, the web part 3, the flange part 4, or the arm part 5 located in this. If it is a hat-shaped steel sheet pile 1 provided with the space | interval holding | maintenance part for stacking of such a form, the hat shape provided with the space | interval holding | maintenance part 2 for stacking with the normal hat-shaped steel sheet pile 2 which is not provided with the space | interval holding | maintenance part 8 for stacking. The steel sheet piles 1 can be combined (for example, alternately) and stacked, and in such a case, the normal hat-shaped steel sheet pile 2 and the stacking interval holding part that do not include the stacking interval holding part 8 are provided. It can be piled up in the state where joint part 6 with hat-shaped steel sheet pile 1 provided with each other does not contact.

(Fourth and fifth embodiments)
7 (a) and 7 (b) show a fourth embodiment and a fifth embodiment of the hat-shaped steel sheet pile 1 having the stacking interval holding portion of the present invention. In FIG. 7 (a), Stacking interval holding portions 8 projecting inside the grooves 12 are provided symmetrically at the corner portions 9 positioned at the connecting portions of the web portion 3 and the flange portion 4. The stacking interval holding portion 8 has a straight inner contour in cross section. In FIG. 7B, a stacking interval holding portion 8 protruding outside the groove 12 is provided at the corner portion 11 located at the connecting portion of the arm portion 5 and the flange portion 4, and the stacking interval described above is provided. The holding part 8 has a linear outer contour in cross section.
With reference to FIGS. 8 (a) and 8 (b), the case where the stacking interval holding portion 8 as shown in FIGS. 7 (a) and 7 (b) is provided will be described further. The web portion 3 and the flange portion 4 are connected to each other. As shown in FIG. 8 (a), the stacking interval holding portion 8 is provided at the corner portion 9 positioned at the mounting portion and the corner portion 11 positioned at the connecting portion between the arm portion 5 and the flange portion 4, as shown in FIG. When not provided, the hat-shaped steel sheet pile 2 is stacked and the upper and lower joint parts 6 are in contact with each other. In such a case, the corner of the other hat-shaped steel sheet pile facing the inner corner of the upper and lower hat-shaped steel sheet piles All straight lines L in contact with the corner R part 14, all straight lines L to the flange part 4 and the web part 3, the angle A formed with the web part 3 exceeds 0 degree, and the flange part 4 and the arm Includes all the straight lines L that are less than the flange angle α formed with the part 5 Thus, when it is set as the hat-shaped steel sheet pile 1 provided with the space | interval space | interval holding | maintenance part 8 for stacking which has the space | interval space | interval holding | maintenance part 8 for stacking which protrudes toward the inside at the corner part of said one steel sheet pile, The parts 6 do not touch each other. (In the embodiment of the present invention, the flange angle α is substantially the same in order to increase the effective width between the joint centers of the steel sheet piles, reduce the number of sheet piles placed, and construct an economical sheet pile wall. (It is preferably within a range of less than 75 ° to 40 °.)
In other words, when the stacking interval holding portion 8 is formed so as to include the web inner contour line and the flange inner contour line formed by all the straight lines L as described above, since all the straight lines L are included, The joint parts 6 in the hat-shaped steel sheet pile 1 provided with the interval holding part do not contact each other.
The flange angle α is an angle formed by the extended surface of the arm portion 5 on the groove 12 side and the inclined flange portion 4 as shown in FIG.

  In the case of FIGS. 9A, 9C, and 9D, the stacking interval holding unit 8 in the hat-shaped steel sheet pile 1 provided with the stacking interval holding unit positioned in the lower layer is used to hold the stacking interval in the upper layer. The load of the hat-shaped steel sheet pile 1 provided with a portion is supported at two points. In the case of (b), the stack holding unit 8 is provided at the upper position by four stack holding units 8. The load of the hat-shaped steel sheet pile 1 is supported at four points. In this way, by providing the number of stacking interval holding portions 8, for example, preferably 2 to 4, stacking the hat-shaped steel sheet piles 1 provided with the stacking interval holding portions positioned at the upper position in the lower order. It can be supported in a stable state by the stacking interval holding portion 8 in the hat-shaped steel sheet pile 1 having the interval holding portion. Moreover, since the front-end | tip part of the space | interval holding | maintenance part 8 for stacking is made into the circular arc shape of a cross section, the cross-section of the hat-shaped steel sheet pile 1 provided with the space | interval holding | maintenance part for stacking located in the upper part is point-touched (in a member longitudinal direction). Therefore, by adjusting the posture of the hat-shaped steel sheet pile 1 having the stacking space holding portion positioned at the upper position relative to the stacking space holding portion 8 positioned at the lower position, it can be supported in a line touch state. And the attitude | position of the hat-shaped steel sheet pile 1 provided with the space | interval holding | maintenance part for stacking located in a higher rank can be adjusted.

  When the stacking interval holding portion 8 is provided, as shown in FIG. 9 (e), the steel sheet pile is further away from the neutral axis C intersecting the flange portion, so that the secondary moment increases and the bending rigidity increases. If the stacking interval holding portion 8 is provided at a position far from the vertical axis C, the cross-sectional performance can be improved efficiently.

  In the case of the embodiments described above and below, as shown in FIGS. 10A and 10B, a hat-shaped steel arrow 18 is formed by stacking a plurality of hat-shaped steel sheet piles 1 each having a stacking interval holding portion on the sleeper 16. And the hat-shaped steel sheet pile 1 provided with the space | interval holding | maintenance part for stacking should just be stacked so that the hat-shaped steel arrow 18 may be stacked on the sleeper 16 on it.

(6th, 7th embodiment)
11 (a) and 11 (b) show the sixth and seventh embodiments of the hat-shaped steel sheet pile 1 having the stacking interval holding portion of the present invention and a state in which five hat-shaped steel sheet piles are stacked. Each of these is a specific example of the form shown in FIG. 6 (d), and in the form shown in FIG. 11 (a), the corner part located at the connecting part of the web part 3 and the flange part 4 is used. 9 shows a form in which the stacking interval holding portion 8 is formed in the corner portion 9 by bending the steel plate portion 9 so as to protrude to the outside of the groove 12, and in FIG. A form is shown in which the steel plate portion of the corner portion 11 located at the connecting portion with the flange portion 4 is bent so as to protrude inside the groove 12 and the stacking interval holding portion 8 is formed in the corner portion 9. ing.

(Eighth and ninth embodiments)
FIGS. 12 (a) and 12 (b) show the eighth and ninth embodiments of the hat-shaped steel sheet pile 1 having the stacking interval holding portion of the present invention and a state in which five hat-shaped steel sheet piles are stacked. In these forms, these are forms related to FIG. 11, and in FIG. 12 (a), the center of gravity axis is the boundary, and on the other hand, the web part 3 and the flange part 4 are located at the connecting part. One stacking interval holding portion 8 is provided at the corner portion 9, and one stacking interval holding portion 8 is provided at the corner portion 11 located at the connecting portion of the flange portion 4 and the arm portion 5 on the other side. It is the form which is made.

(10th and 11th embodiments)
13 (a) and 13 (b) show a state in which the hat-shaped steel sheet piles 1 having the stacking interval holding portions of the present invention according to the tenth and eleventh embodiments and five hat-shaped steel sheet piles are stacked. 11, which is a form related to FIG. 11, and in FIG. 13A, two corner portions located at the connecting portion of the web portion 3 and the flange portion 4 on the other hand, with the center of gravity axis as a boundary. 9 is provided with stacking interval holding portions 8 respectively, and on the other hand, one stacking interval holding portion 8 is provided at the corner portion 11 located at the connecting portion of the flange portion 4 and the arm portion 5. It is.

(Twelfth and thirteenth embodiments)
FIGS. 14A and 14B show the twelfth and thirteenth embodiments of the hat-shaped steel sheet pile 1 having the stacking interval holding portion of the present invention and a state in which five hat-shaped steel sheet piles are stacked. In FIG. 14A, in the form of FIG. 1 or FIG. 6B, the corner portion 9 is increased in thickness to have an arc-shaped cross section so that the hot rolling process is further facilitated. In FIG. 14 (a), one stacking interval holding portion 8 is provided at each corner portion 9 located at the connecting portion between the web portion 3 and the flange portion 4 with the center of gravity axis as a boundary. In FIG. 14 (b), the stacking interval holding portions 8 are provided at the corner portions 11 positioned at the connecting portions of the flange portion 4 and the arm portion 5. .

(Fourteenth and fifteenth embodiments)
FIGS. 15 (a) and 15 (b) show the 14th and 15th embodiments of the hat-shaped steel sheet pile 1 having the stacking interval holding portion of the present invention and a state in which five hat-shaped steel sheet piles are stacked. These forms are modifications of the form shown in FIG.
In FIG. 15 (a), with the center of gravity axis as the boundary, on the one hand, a stacking interval holding portion 8 is provided at the corner portion 9 located at the connecting portion of the web portion 3 and the flange portion 4, and on the other hand, This is a form in which a stacking interval holding portion 8 is provided at a corner portion 11 located at a connecting portion of the flange portion 4 and the arm portion 5.
In FIG. 15 (b), on the other hand, with the center of gravity axis as a boundary, the corner portion 9 located at the connecting portion between the web portion 3 and the flange portion 4 and the connecting portion between the flange portion 4 and the arm portion 5 are shown. On the other hand, the stacking interval holding portion 8 is provided in the corner portion 11 positioned, and on the other hand, the stacking interval holding portion 8 is provided in the corner portion 9 positioned at the connecting portion of the web portion 3 and the flange portion 4. It is a form.

(16th and 17th embodiments)
16 (a) and 16 (b) show the sixteenth and seventeenth embodiments of the hat-shaped steel sheet pile 1 provided with the stacking interval holding portion of the present invention and a state in which five hat-shaped steel sheet piles are stacked. In FIG. 15A, stacking interval holding portions 8 are provided at the corner portions 11 located at the connecting portions of the flange portion 4 and the arm portion 5 with the center of gravity axis as the boundary. In FIG. 16 (b), a stacking interval holding portion 8 is provided at the corner portion 9 located at the connecting portion between the web portion 3 and the flange portion 4 on one side with respect to the center of gravity axis. is there.

(Eighteenth and nineteenth embodiments)
FIGS. 17 (a) and 17 (b) show the eighteenth and nineteenth embodiments of the hat-shaped steel sheet pile 1 having the stacking interval holding portion of the present invention and a state in which five hat-shaped steel sheet piles are stacked. These forms are forms more specifically showing the form shown in FIG. 6 (c), and in FIG. 17 (a), the corner portions are formed so that the hot rolling process is further facilitated. 9 is projected to the groove 12 side, and the tip portion is formed into an interval holding portion 8 for stacking having a small cross-sectional arc shape with a small curvature, and is connected to the connecting portion between the web portion 3 and the flange portion 4 in the hat-shaped steel sheet pile. The radius of curvature is smaller than the R portion (cross-sectional arc-shaped portion) on the outer surface of the corner portion 9 positioned.
In FIG. 17 (b), the corner portion 11 positioned at the connecting portion of the flange portion 4 and the arm portion 5 is used for stacking with the tip end portion having a small curvature radius so as to protrude to the outside of the groove 12. The interval holding part 8 is formed.

(20th and 21st embodiments)
18 (a) and 18 (b) show the twentieth and twenty-first embodiments of the hat-shaped steel sheet pile 1 having the stacking interval holding portion of the present invention and a state in which five hat-shaped steel sheet piles are stacked. In FIG. 18 (a), on the other hand, in the corner portion 9 located at the connecting portion of the web portion 3 and the flange portion 4 with the center of gravity axis as the boundary, as in FIG. On the other hand, there is shown a configuration in which the interval holding portion 8 is provided, and on the other hand, the stacking interval holding portion 8 is provided in the corner portion 11 located at the connecting portion of the flange portion 4 and the arm portion 5.

(Twenty-second and twenty-third embodiments)
19 (a) and 19 (b) show a state in which the hat-shaped steel sheet piles 1 having the stacking interval holding portions of the present invention according to the 22nd and 23rd embodiments and five hat-shaped steel sheet piles are stacked. In the embodiment shown in FIG. 19 (a), the stacking interval holding portion 8 is provided at a portion located outside the groove 12 and located at the connecting portion of the flange portion 4 and the arm portion 5. The form is shown.
In FIG. 19 (b), as shown in FIG. 18 (a), stacking interval holding portions 8 are provided at the corner portions 9 located at the connecting portions of the web portion 3 and the flange portion 4.

(24th and 25th embodiments)
20 (a) and 20 (b) show the 24th and 25th embodiments of the hat-shaped steel sheet pile 1 having the stacking interval holding portion of the present invention and a state in which five hat-shaped steel sheet piles are stacked. In the embodiment shown in FIG. 20A, the embodiment shown in FIG. 7 or FIG. 8 is more specifically shown.
In the form shown in FIG. 20B, the stacking interval holding part 8 that protrudes to the outside of the groove 12 is provided in the corner part 11 positioned at the connection part between the flange part 4 and the arm part 5.
The interval holding part 8 for stacking is set as follows.
A straight line in contact with the R portion of the corner portion of the other hat-shaped steel sheet pile facing the inner corner of one of the upper and lower hat-shaped steel sheet piles when the hat-shaped steel sheet piles are stacked in the case where no stacking interval holding portion is provided. The one steel is included so as to include the straight line extending from the flange part to the arm part, the angle A formed with the arm being greater than 0 degrees and less than the flange angle formed between the flange part and the arm part. It is set as the space | interval holding | maintenance part 8 for stacking | stacking for the corners which protrudes inward at the corner part of a sheet pile.

(26th and 27th embodiments)
21 (a) and 21 (b) show a state in which the hat-shaped steel sheet piles 1 having the stacking interval holding portions of the present invention according to the 26th and 27th embodiments and five hat-shaped steel sheet piles are stacked. In the form shown in FIG. 21A, the stacking interval holding portion 8 is provided at the corner portion 9 located at the connecting portion between the web portion 3 and the flange portion 4 with the center of gravity axis as the boundary. On the other hand, a stacking interval holding portion 8 is provided at a corner portion 11 located at a connecting portion between the flange portion 4 and the arm portion 5. Moreover, in the form shown in FIG.21 (b), it is located in the connection part of the flange part 4 and the web part 3 like the form shown in FIG.20 (a), and also in the form shown in FIG.20 (b). In this embodiment, stacking interval holding portions 8 are provided at the corner portions 9.

(28th and 29th embodiments)
22 (a) and 22 (b) show the state of the 28th and 29th embodiments of the hat-shaped steel sheet pile 1 provided with the stacking interval holding portion of the present invention and the state in which five hat-shaped steel sheet piles are stacked. In the embodiment shown in FIG. 22A, stacking interval holding portions 8 are provided at the corner portions 11 located at the connecting portion of the flange portion 4 and the arm portion 5 with the center of gravity axis as the boundary. It is the form that is done.

(Thirty Embodiment)
FIG. 23 shows a 30th embodiment of a hat-shaped steel sheet pile 1 having a stacking interval holding portion according to the present invention and a state in which five hat-shaped steel sheet piles are stacked. The stacking interval holding portion 8 provided in the corner portion 9 positioned at the connecting portion of the portion 3 and the flange portion 4 is a stacking interval holding portion 8 having the same form as that shown in FIG. The stacking interval holding portion 8 provided in the corner portion 11 positioned at the connecting portion with the arm portion 5 is a stacking interval holding portion 8 having the form shown in FIG. Thus, in this invention, it is good also as a combination form from which the form of the space | interval holding | maintenance part 8 for stacking differs.

(31st and 32nd embodiments)
24 (a) and 24 (b) show the 31st and 32nd embodiments of the hat-shaped steel sheet pile 1 provided with the stacking interval holding portion of the present invention and the state in which five hat-shaped steel sheet piles are stacked. In FIG. 24 (a), the inner contour line of the stacking interval holding portion 8 in FIG. 20 (a) is arcuate, and the linear shape of the stacking interval holding portion 8 shown in FIG. It is the form of the space | interval holding | maintenance part 8 for stacking made into the circular arc-shaped inner side contour line so that the web part 3 and the flange part 4 may be connected so that an inner side contour line may be made into a tangent line.
Further, in the form shown in FIG. 24B, in FIG. 20B, the inner contour line of the stacking interval holding portion 8 inside the groove 12 has an arc shape, and the stacking interval holding portion 8 outside the groove 12 is formed. A circular shape is formed so that the web portion 3 and the flange portion 4 are connected so that the outer contour line of the web is an arc shape and each linear contour line of the stacking interval holding portion 8 shown in FIG. An arcuate inner contour line and an arcuate contour line (contour line of the stacking spacing retainer 8 located outside the groove) to connect the flange portion 4 and the arm portion 5 to each other. 8 form.

(Thirty-third and thirty-fourth embodiments)
FIGS. 25 (a) and 25 (b) show the 33rd and 34th embodiments of the hat-shaped steel sheet pile 1 provided with the stacking interval holding portion of the present invention and the state where five hat-shaped steel sheet piles are stacked. In FIG. 25 (a), with the center of gravity axis as the boundary, the configuration shown in FIG. 24 is used on the one hand, and on the other hand, the flange portion 4 and the arm portion 5 shown in FIG. It is the form made into the space | interval holding | maintenance part 8 for stacking provided in the corner part 11 located in a part.

  26 (a) and 26 (b) show the 35th and 36th embodiments of the hat-shaped steel sheet pile 1 provided with the stacking interval holding portion of the present invention and a state in which five hat-shaped steel sheet piles are stacked. In FIG. 26 (a), the stacking interval holding portion 8 provided at the corner portion 11 located at the connecting portion between the flange portion 4 and the arm portion 5 is the same as that shown in FIG. 24 (b). In FIG. 26 (b), a stacking interval holding portion 8 is further provided at the corner portion 9 located at the connecting portion between the web portion 3 and the flange portion 4 with the center of gravity axis as the boundary. It is a form.

Like the said embodiment, the space | interval holding | maintenance part 8 for stacking in the hat-shaped steel sheet pile 1 provided with the space | interval holding | maintenance part for stacking | stacking is the form provided with the height dimension of an up-down direction, and the position control dimension of the left-right direction by itself. In this case, it is possible to support the hat-shaped steel sheet pile positioned on its own or in a higher position while restricting the position. In addition, the stacking interval holding portion 8 provided in the corner portion is supported while being position-regulated with each other in cooperation with the R portion of the hat-shaped steel sheet pile 1 provided with the lower or upper stacking interval holding portion. The
It should be noted that, when two stacking interval holding portions 8 are provided in the middle portion of the flat web portion 3 on one side and the other side with the centroid axis as a boundary, or stacked in the center portion in the width direction of the arm portion 5, respectively. Rather than providing the interval holding portion 8, as in the above-described embodiments, the stacking interval holding portion 8 alone or in combination with the position regulating action in the vertical and horizontal directions includes the stacking interval holding portion. The hat-shaped steel sheet pile 1 can be supported in a stable state.

As described above, the pair of flange portions 4 are disposed at both ends of the web portion 3 located at the center, the arm portion 5 is disposed at the other end of each flange portion 4, and the joint portion 6 is disposed at the distal end of the arm portion 5. In a hot-rolled steel sheet pile having a cross-sectional hat shape, the stacking interval is maintained such that the relationship between the width (B) of the arm portion 5 and the height (H) of the steel sheet pile satisfies the following formula (1): In the case of the hat-shaped steel sheet pile 1 provided with a portion, it is possible to prevent the arm portion 5 from being deformed when 10 sheets and a large number of hat-shaped steel sheet piles 1 are stacked and temporarily placed.
B / H <0.247 (1)
When the value of B / H is larger than 0.247, when the ten pieces of 20 sheets and a large number of hat-shaped steel sheet piles 1 are stacked and temporarily placed, or when repeated use is repeated many times, There is a risk of deformation.
Moreover, the hat-shaped steel sheet pile 1 provided with the space | interval holding | maintenance part for stacking so that the relationship between the width | variety (B) (mm) of an arm part and the plate | board thickness (T) (mm) of an arm part satisfies (2) Formula. If it is, the rigidity of the arm part 5 can be objectively prescribed | regulated by width-thickness ratio reliably, and the design of the hat-shaped steel sheet pile 1 provided with the space | interval holding | maintenance part for stacking becomes easy.
B ² / T ³ <2.55 (2)
When the value of B ² / T ³ is larger than 2.55, the arm portion is formed when 10 sheets and 20 pieces of hat-shaped steel sheet piles 1 are stacked and temporarily placed or repeatedly used for multiple times. The risk of causing 5 deformation is increased.
Further, in these cases, when the width of one hat-shaped steel sheet pile is 700 mm or more, the cross-sectional rigidity (Ij) of one joint portion 6 in the weak axis direction and the weak axis direction per one hat-shaped steel sheet pile When the relationship between the section rigidity (I) of the joint and the thickness (tj) of the joint bottom portion of the joint portion 6 is the hat-shaped steel sheet pile 1 provided with the stacking interval holding portion satisfying the following expression (3): Good.
(Ij / I) × tj ³ > 0.0345% (3)
When the value of (Ij / I) × tj ³ is smaller than 0.0345%, when 20 sheets of 10 sheets and a large number of hat-shaped steel sheet piles 1 are stacked and temporarily placed, or when multiple times of driving are used repeatedly In addition, there is a high possibility that the arm portion 5 is deformed.

  When practicing the present invention, the stacking interval holding unit 8 may be an acute stacking interval holding unit 8 or may be a stacking interval holding unit 8 having a semicircular or quarter-circular tip. Also good.

DESCRIPTION OF SYMBOLS 1 Hat-type steel sheet pile provided with the space | interval holding | maintenance part for stacking 2 Hat-shaped steel sheet pile 3 Web part 4 Flange part 5 Arm part 6 Joint part 7 Joint opening groove 8 Spacing part 9 for stacking a web part and a flange part Corner portion 10 located at the joint body portion 11 corner portion 12 located at the connecting portion of the arm portion and the flange portion 13 groove 13 tip portion 14 of the stacking interval holding portion corner portion R portion 15 support portion 16 sleeper 18 Hat-shaped steel sheet pile group 19 Proximal end projection 20 Bearing surface 21 Step or protrusion 23 U-shaped steel sheet pile 24 Wood

Claims (10)

A pair of flange portions are connected to both ends of the web portion, an arm portion is connected to the other end of the flange portion, and a joint section is provided at the tip of the arm portion. In the hat-shaped steel sheet pile manufactured by processing,
It is only an intermediate portion between a corner portion located at a connecting portion between the web portion and the flange portion and a corner portion located at a connecting portion between the arm portion and the flange portion, and the web portion A hat-shaped steel sheet pile provided with a stacking interval holding portion, wherein at least one stacking interval holding portion continuous in the longitudinal direction of the member is integrally provided on one and the other with the intersecting center of gravity as a boundary. A pair of flange portions are connected to both ends of the web portion, an arm portion is connected to the other end of the flange portion, and a joint section is provided at the tip of the arm portion. In the hat-shaped steel sheet pile manufactured by processing,
It is a part excluding the joint part, and at least one interval holding part that is continuous in the longitudinal direction of the member on the one and the other with the center of gravity intersecting the web part as a boundary. A hat-shaped steel sheet pile having an interval holding portion for stacking. In the corner portion located in the connecting portion between the web portion and the flange portion, or in the corner portion located in the connecting portion between the arm portion and the flange portion,
The stacking interval holding unit according to claim 2, further comprising a stacking interval holding unit for a corner portion formed in a convex section toward the outside or the inside of the groove of the hat-shaped steel sheet pile. Hat-shaped steel sheet pile with a part. In the corner portion located in the connecting portion between the web portion and the flange portion, or in the corner portion located in the connecting portion between the arm portion and the flange portion,
A straight line in contact with the R portion of the corner portion of the other hat-shaped steel sheet pile facing the corner portion of the upper and lower hat-shaped steel sheet piles when the hat-shaped steel sheet piles are stacked in the case where no stacking interval holding portion is provided. The one steel is included so as to include the straight line extending from the flange portion to the web portion, the angle A formed with the web being greater than 0 degrees and less than the flange angle formed between the flange portion and the arm portion. The hat-shaped steel sheet pile with stacking interval holding portions according to claim 2, further comprising a stacking interval holding portion for stacking corner portions protruding inward at the corner portion of the sheet pile. On each flange on both sides,
Flange having a height dimension larger than the flange gap (G1) in the direction perpendicular to the flange between the flanges of the upper and lower hat-shaped steel sheet piles when the hat-shaped steel sheet piles are stacked without providing the stacking interval holding portion A hat-shaped steel sheet pile provided with the stacking interval holding part according to any one of claims 1 to 4, wherein a stacking holding unit for stacking is provided integrally. In each arm part on both sides,
The height dimension larger than the arm portion interval (G2) in the direction perpendicular to the arm portions between the arm portions of the upper and lower hat-shaped steel sheet piles in the case where the hat-shaped steel sheet piles are stacked without providing the stacking interval holding portion. The hat-shaped steel sheet pile provided with the stacking interval holding portion according to any one of claims 2 to 4, wherein a stacking interval holding portion for the arm portion having a stack is provided integrally. In the web part,
The height dimension larger than the web part interval (G3) in the direction perpendicular to the web part between the web parts of the upper and lower hat-shaped steel sheet piles when the hat-shaped steel sheet piles are stacked in the case where the stacking interval holding part is not provided. A hat-shaped steel sheet pile provided with a stacking interval holding portion according to any one of claims 2 to 4, wherein a stacking interval holding portion for a web portion having a stack is integrally provided.   On the front and back surfaces of the corner portion positioned at the connecting portion between the web portion and the flange portion, the corner portion positioned at the connecting portion between the arm portion and the flange portion, the web portion, the flange portion, or the arm portion. The hat-shaped steel sheet pile provided with the stacking interval holding portion according to any one of claims 1 to 7, wherein the stacking interval holding portion is provided integrally.   In the method of stacking up and down the hat-shaped steel sheet pile provided with the stacking interval holding portion according to any one of claims 1 to 8, the hat-shaped steel sheet pile positioned at the upper position is the interval for stacking the hat-shaped steel sheet pile positioned at the lower position. For stacking, which is supported by the holding part and stacked via a gap so that the joint part of the hat-shaped steel sheet pile located in the upper part and the joint part of the hat-shaped steel sheet pile located in the lower part do not contact each other A method of stacking hat-shaped steel sheet piles with a spacing holding part.   The hat-shaped steel sheet pile stacking method in which a plurality of hat-shaped steel sheet pile groups and sleepers are alternately stacked by the stacking method of the hat-shaped steel sheet piles having the stacking interval holding portion according to claim 9. In the sheet pile group, when the hat-shaped steel sheet pile where the joint part is in contact with the sleeper does not maintain the horizontal state, the other hat-shaped steel sheet pile is placed on the hat-shaped steel sheet pile by making it horizontal. A method for stacking hat-shaped steel sheet piles having an interval holding section for stacking, wherein the sleepers are held in a horizontal state.

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