JP2016113757A - Wall shape structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively improve strength in wall shape structure to be anti-tide seawall, breakwater, retaining wall without complicating structure of column member and horizontal plate member constructing it and thus without increasing their thickness and enlarging them.SOLUTION: There is provided a wall shape structure W consisting of a concrete column member 1 comprising web parts 10, flange parts 11 and groove parts 12 at right and left sides respectively along with in a vertical direction in a manner creating H shape horizontal section; and a concrete horizontal plate member 2 supported between column members 1 adjacently established in a manner where an end part 20 is stored in the groove part 12. The column member 1 comprises a steel core 13 and a first reinforcement steel material 14 fixed in multistage shape onto the core 13 and positioned in the flange part 11. The horizontal plate member 2 comprises a second reinforcement steel material 21 integrated with a main reinforcing bar 22 constructing the horizontal plate member 2 in the end part 20.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an improvement of a wall-like structure that becomes a seawall, a breakwater, a retaining wall, or the like.

  Patent Document 1 discloses a protection fence having a predetermined height by standing a plurality of horizontal sheet piles sequentially from above between channel-shaped parent piles.

  Moreover, there exists what is shown by patent document 2 as a tsunami protection fence comprised by inserting a steel sheet pile between the main piles which consist of H-shaped steel.

  If the parent pile and sheet pile of such a protective fence are made of concrete, it becomes possible to wipe away the consideration of rust prevention, that is, corrosion.

  However, when the main pile and the sheet pile are simply made of concrete, in order to prevent a shear failure from occurring in both fitting parts when a large load is applied in the horizontal direction by a tsunami or the like, Such a fitting portion must be thickened, which leads to such an increase in size. This is a hindrance when precasting them.

JP2013-52598A JP 2007-302281 A

  The main problem to be solved by the present invention is that the strength of the wall-like structure that becomes a seawall, breakwater, retaining wall, etc., without complicating the structure of the pillar member and cross-sheet pile member that constitutes the wall structure. Moreover, it exists in the point which enables it to improve effectively, without making these thick and large.

In order to achieve the above object, according to the present invention, a wall-like structure is made of a concrete having a horizontal section with an H shape, a web portion and a flange portion, and groove portions extending in the vertical direction on the left and right. A pillar member of
Between the pillar members installed adjacent to each other, a wall-like structure comprising a concrete cross-sheet pile member supported by placing an end in the groove portion,
The column member includes a core made of a shape steel, and a first reinforcing steel material that is fixed in a multistage shape with respect to the core and is positioned in the flange portion.
The said horizontal sheet pile member shall have the 2nd reinforcement steel material integrated with the main reinforcement which comprises this horizontal sheet pile member in the said edge part.

  When a large load is applied to the wall-like structure in the horizontal direction due to a tsunami or the like, the shear failure occurs at the fitting part of the column member and the lateral sheet pile member, that is, the groove of the column member and the end of the lateral sheet pile member. Although it is easy, the strength of the groove and the end is increased by the first reinforcing steel material and the second reinforcing steel material without complicating the structure of the column member and the lateral sheet pile member. And can be effectively improved.

  It is one of the preferred embodiments of the present invention that the first reinforcing steel material is provided with a through hole through which the main reinforcing bar constituting the column member passes.

Also, the web portion of the column member is provided with a passing portion of a connecting rod-like body,
Each of the horizontal sheet pile members adjacent to each other with the pillar member interposed therebetween is provided with a passage hole of the connecting rod-like body opened at a side end surface facing the groove bottom of the groove portion of the pillar member,
The adjoining sideways by the connecting rod-like body passed through the one passage hole of the adjacent lateral sheet pile member, the passage portion, and the other passage hole of the adjacent lateral sheet pile member. One preferred embodiment of the present invention is to connect the sheet pile members.

  In this way, even if the ground sheet deformation is caused by an earthquake or the like by integrating the three members of the adjacent horizontal sheet pile member and the column member between the adjacent horizontal sheet pile members by the connecting rod-like body, the horizontal sheet pile member It is possible to prevent a situation such as dropping out as much as possible.

  According to the present invention, the strength of a wall-like structure that becomes a seawall, a breakwater, a retaining wall, etc. can be increased without complicating the structure of the pillar member and the lateral sheet pile member constituting the wall structure. It is possible to effectively improve without increasing the size and size, and it is possible to appropriately precast them.

FIG. 1 is a perspective configuration diagram showing the overall configuration of a wall-like structure according to an embodiment of the present invention. FIG. 2 is a perspective configuration diagram showing a column member and a footing constituting the wall-like structure. FIG. 3 is a perspective configuration diagram showing a fitting portion between a column member and a cross-sheet pile member constituting the wall-like structure, and shows an internal structure with a solid line and an outline with an imaginary line. FIG. 4 is a horizontal sectional configuration diagram of the fitting portion of FIG. 3. FIG. 5 is a configuration diagram illustrating a process of connecting adjacent horizontal sheet pile members with a connecting rod-shaped body in the fitting portion in FIG. 3, and includes a shape steel, a first reinforcing steel material, a main reinforcing bar, and a horizontal bar that constitute a column member. The description of the second reinforcing steel material, the main reinforcing bar and the shear reinforcing bar constituting the sheet pile member is omitted. FIG. 6 is a configuration diagram showing a process of connecting the adjacent sheet pile members in the fitting portion of FIG. 3 with a connecting rod-like member, and the shape steel and the like constituting the column member are omitted as in FIG. The process which becomes the next order of FIG. 5 is shown. FIG. 7 is a diagram showing the state in which the adjacent sheet pile members are connected by the connecting rod-like body in the fitting portion of FIG. It is. FIG. 8 is a perspective configuration diagram showing an example in which the internal configuration of the horizontal sheet pile member is partially changed, and shows the internal structure with a solid line and the outline with an imaginary line. FIG. 9 is a structural diagram showing a modification of the structure in which the adjacent sheet pile members are connected by the connecting rod-like member in the fitting portion, omitting the shape steel and the like constituting the column member in the same manner as FIG. It is.

  Hereinafter, typical embodiments of the present invention will be described with reference to FIGS. The wall-like structure W according to this embodiment is a seawall, a breakwater, a retaining wall, and the like.

  The wall-like structure W includes a column member 1 and a lateral sheet pile member 2. The column member 1 is made of precast steel reinforced concrete. Moreover, the horizontal sheet pile member 2 is made of precast reinforced concrete, and further includes a second reinforcing steel material 21 described later in each of the left and right end portions 20 and 20.

  The column member 1 is installed on the ground on which the wall-like structure W is constructed, with a distance slightly larger than the entire length of the lateral sheet pile member 2 between the adjacent column members 1. The pillar member 1 is installed in a direction in which a groove 12 described later faces the groove 12 of the adjacent pillar member 1. In the illustrated example, each pillar member 1 is installed with a main reinforcing bar 15 described later fixed to a concrete footing indicated by reference numeral 3 in FIG. The footing 3 incorporates an H-shaped steel 30 having a web arranged vertically. An extension steel plate 31 is fixed to each of the upper flange and the lower flange of the H-shaped steel 30, and the extension steel plate 31 protrudes laterally from the outer surface of the footing 3 (FIG. 2). In the illustrated example, the main reinforcing bar 15 protruding downward from the lower end of the column member 1 has a through hole 31a provided in a protruding portion of the extension steel plate 31 fixed to the upper flange and an extension fixed to the lower flange. The column member 1 is inserted into a through hole 31a provided in the protruding portion of the steel plate 31, and a nut (not shown) is screwed to the end of the main reinforcing bar 15 protruding below the extended steel plate 31 fixed to the lower flange. And the footing are integrated (FIG. 2). The extended steel plate 31 and the lower end side of the main rebar 15 are finally covered with concrete (FIG. 1).

  In the illustrated example, an underground beam 4 is formed between the adjacent footings 3, 3, and the footings 3 that support each column member 1 are integrated by the underground beam 4 and integrated with the footing 3. Since the ramen structure can be formed by the piles (not shown), footing 3, underground beam 4, and column member 1, the earthquake resistance of the wall-like structure W when a seismic force acts in the wall axis direction is greatly improved. . At the same time, the lowermost sheet pile member 2 is supported by the underground beam 4 (FIG. 1).

  The column member 1 is provided with a web section 10 and two flange sections 11 sandwiching the web section 10 with an H-shaped horizontal section, and a groove section 12 along the vertical direction on each side. Further, the column member 1 includes a core body 13 made of a shape steel, and first reinforcing steel members that are fixed to the core body 13 so as to form a multistage shape and are respectively positioned in the two flange portions 11. 14.

  In the illustrated example, the core body 13 is an H-shaped steel. The column member 1 has a structure in which the web 13 a of the core body 13 is embedded in the web portion 10 of the column member 1 and the flange 13 b of the core body 13 is embedded in the flange portion 11 of the column member 1. Manufactured by placing concrete in the molding die in a state where the core body 13 with the first reinforcing steel material 14 fixed is positioned in the molding die (not shown).

  In the illustrated example, the first reinforcing steel material 14 has a rectangular plate shape. The overall length of the first reinforcing steel material 14 is larger than the width dimension of the flange 13 b of the core body 13. The first reinforcing steel material 14 is fixed to the core body 13 by welding its one side along the length direction to the outer surface of the flange 13b so that the plate surface is horizontally arranged. The left end portion of the first reinforcing steel material 14 in FIG. 4 protrudes to the left of the left end portion of the flange 13b of the core body 13, and the right end portion of the first reinforcing steel material 14 in FIG. 4 is the right end portion of the flange 13b of the core body 13. It protrudes to the right side. The distance between the first reinforcing steel materials 14 adjacent to each other in the vertical direction is equal at any position of the column member 1 (FIG. 2).

 Further, the first reinforcing steel material 14 is provided with a through hole 14a through which the main reinforcing bar 15 constituting the column member 1 passes. In the illustrated example, the first reinforcing steel material 14 has a circular through hole 14a formed at a position in the middle in the length direction, and two through holes 14a on both sides of the through hole 14a. , 14 a are provided at intervals in the length direction of the first reinforcing steel material 14. And in the example of illustration, between the flange 13b of the said core 13 and the outer surface of the flange part 11 of the pillar member 1, the five main rebars 15 ... 15 are each provided in multistage shape as mentioned above. It is built in the column member 1 in a state where it passes through the corresponding through hole 14 a of the reinforcing steel material 14. Of the five main reinforcing bars 15 ... 15, the four main reinforcing bars 15 ... 15 excluding the main reinforcing bar 15 passed through the through hole 14a located in the middle in the longitudinal direction of the first reinforcing steel material 14, The lower end side protrudes downward from the lower end of the column member 1. In the illustrated example, the four main reinforcing bars 15... 15 are the main reinforcing bars 15 that are passed through the through holes 31 a of the extension steel plate 31 of the footing 3.

  On the other hand, the lateral sheet pile member 2 is configured to be supported by placing the end portion 20 in the groove portion 12 between the column members 1 and 1 installed adjacent to each other. Moreover, this cross sheet pile member 2 has the 2nd reinforcement steel material 21 integrated in the main reinforcement 22 which comprises this cross sheet pile member 2 in the said edge part 20. As shown in FIG.

  In the illustrated example, the lateral sheet pile member 2 includes a front surface 2a and a back surface 2b having a horizontally long rectangular shape, a top surface 2c and a bottom surface 2d extending between the front surface 2a and the back surface 2b, and left and right side end surfaces 2e and 2e. Prepare. The distance between the front surface 2 a and the back surface 2 b, that is, the thickness of the lateral sheet pile member 2 is between the inner surface of one flange portion 11 facing the groove portion 12 of the column member 1 and the inner surface of the other flange portion 11. It is slightly smaller than the distance.

  The horizontal sheet pile member 2 includes a plurality of main reinforcing bars 22... 22 and a plurality of shear reinforcing bars 23. The main reinforcing bars 22 are respectively disposed at a position between the middle position in the thickness direction of the cross-sheet pile member 2 and the front surface 2a and at a position between the middle position and the rear surface 2b. Further, a plurality of such main reinforcing bars 22 are provided in the vertical direction with an interval between adjacent main reinforcing bars 22.

  In the illustrated example, the second reinforcing steel material 21 has a rectangular plate shape, the plate surface is arranged horizontally, and one end of the second reinforcing steel material 21 is arranged in parallel to the front surface 2a of the horizontal sheet member 2. 20 is arranged. A plurality of such second reinforcing steel materials 21 are also provided in the vertical direction with an interval between adjacent second reinforcing steel materials 21. In the illustrated example, one side of the second reinforcing steel material 21 is welded to the end portion of the main reinforcing bar 22 positioned on the front surface 2a side of the cross sheet pile member 2 at the same level as the second reinforcing steel material 21, and is opposed to this one side. The other side of the second reinforcing steel material 21 is welded to the end portion of the main reinforcing bar 22 positioned on the back surface 2b side of the lateral sheet pile member 2 at the same level as the second reinforcing steel material 21. In the illustrated example, the end portion 20 of the lateral sheet pile member 2 includes a steel plate 21c extending in the vertical direction with the plate surface parallel to the side end surface 2e between the side end surface 2e and the second reinforcing steel material 21. Each of the second reinforcing steel plates 21 has a side portion directed to the side end face 2e welded to the steel plate 21c (see FIG. 3).

  FIG. 8 shows an example in which the main reinforcing bar and the second reinforcing steel material 21 are integrated by engagement. In the example shown in FIG. 8, the upper and lower main reinforcing bars 22... 22 are integrated by forming a curved portion 22 a in the end portion 20 of the lateral sheet pile member 2. The curved portions 22a are respectively provided on one side of the second reinforcing steel material 21 directed to the front surface 2a side of the lateral sheet pile member 2 and the other side of the second reinforcing steel material 21 directed to the rear surface 2b side. Is formed in the recess 21a. In the example shown in FIG. 8, the curved portion 22a of the main reinforcing bar 22 arranged on the front surface 2a side of the horizontal sheet pile member 2 and the curved portion 22a of the main reinforcing bar 22 arranged on the rear surface 2b side of the horizontal sheet pile member 2 are used. The main reinforcing bar 22 and the second reinforcing steel material 21 are integrated with each other by engaging and holding one second reinforcing bar using the recess 21a.

  In the illustrated example, each of the second reinforcing steel materials 21 arranged in a multi-stage shape in the vertical direction is formed with four through holes 21b... 21b. Four longitudinal reinforcing bars 24... 24 that pass through the respective second reinforcing steel members 21 are built in the end portion 20 of the sheet pile member 2.

  Typically, a wall-like structure W is constructed by supporting a plurality of horizontal sheet pile members 2, 2,. Of the horizontal sheet pile members 2 adjacent to each other in the vertical direction, the bottom surface 2d of the horizontal sheet pile member 2 positioned on the upper side is in contact with the top surface 2c of the horizontal sheet pile member 2 positioned on the lower side, and the bottom surface of the bottom horizontal sheet pile member 2 is positioned. 2d contacts the underground beam 4 (FIG. 1).

  A large load is applied to the wall-like structure W in the horizontal direction by a tsunami or the like on the fitting portion of the column member 1 and the side sheet pile member 2, that is, the groove portion 12 of the column member 1 and the end portion 20 of the side sheet pile member 2. However, the first reinforcing steel material 14 and the second reinforcing steel material 21 can increase the strength of the groove portion 12 and the end portion 20 without complicating the structures of the column member 1 and the lateral sheet pile member 2. Therefore, these can be effectively improved without increasing the thickness and size.

  Further, in this embodiment, the column member 1 includes the web portion 10 and the passage portion 10 a of the connecting rod-like body 5. On the other hand, the horizontal sheet pile members 2 that are adjacent to each other with the column member 1 are each provided with a passage hole 25 of the connecting rod-like body 5 that is opened at the side end surface 2e facing the groove bottom of the groove portion 12 of the column member 1. ing. And in this embodiment, the one of the passing holes 25 of the adjacent horizontal sheet pile members 2, 2, the passing portion 10 a, and the other of the adjacent horizontal sheet pile members 2, 2. The adjacent horizontal sheet pile members 2 are connected by the connecting rod-like body 5 that is passed through the passage hole 25.

  In the illustrated example, the passage portion 10a of the pillar member 1 is provided with a through hole penetrating the web 13a of the core body 13 in the left-right direction, and a hole portion communicating with the through hole in the web portion 10 of the pillar member 1. Is formed.

  On the other hand, the lateral sheet pile member 2 is provided with the passage holes 25 extending in the left-right direction at positions in the middle in the thickness direction on both ends 20 and 20 side. Moreover, in the example of illustration, it is the edge part 20 side of the horizontal sheet pile member 2, Comprising: The location located in the outer side of the groove part 12 of the column member 1 WHEREIN: The front surface 2a or back surface 2b of this horizontal sheet pile member 2 (example of illustration) Then, a rectangular hole 26 is formed which is opened in the front surface 2a) and has the hole bottom side communicated with the passage hole 25.

  In addition, on one end 20 side of the lateral sheet pile member 2, the hole axis is aligned with the extension line of the hole axis of the passage hole 25 on the side opposite to the formation side of the passage hole 25 sandwiching the square hole 26. A storage hole 27 is formed. One end of the storage hole 27 communicates with the square hole 26.

  In the illustrated example, the lateral sheet pile member 2 has a distance from the side end face 2e to the other end of the storage hole 27 using the passage hole 25, the square hole 26, and the storage hole 27 on one end side thereof. The connecting rod-shaped body 5 made of a steel rod having a length substantially equal to that of the steel rod can be incorporated in a state where it can be moved in the left-right direction.

  In the illustrated example, the passage hole 25, the square hole 26, and the storage hole 27 are formed at a position in the middle in the vertical direction of one horizontal sheet pile member 2.

  And the corresponding passage part 10a of the pillar member 1 is connected to each passage hole 25 of the horizontal sheet pile member 2 piled up as mentioned above.

  The end 20 of the horizontal sheet pile member 2 (the left lateral sheet pile member 2 in FIG. 5) that does not include the storage hole 27 is accommodated in one groove portion 12 of one column member 1, and the storage hole 27 is provided in the other groove portion 12. From the state in which the end 20 of the lateral sheet pile member 2 (the right lateral sheet pile member 2 in FIG. 5) is accommodated (FIG. 5), it is incorporated into the right lateral sheet pile member 2 using the square hole 26. The rod-shaped body 5 is moved to the left side and inserted into the passage hole 25 of the left side sheet pile member 2 through the passage portion 10a of the column member 1 (FIG. 6). Thereafter, the left end of the connecting rod-like body 5 protruding into the square hole 26 of the left side sheet pile member 2 and the right end of the connecting rod-like body 5 positioned in the square hole 26 of the right side sheet pile member 2 are arranged. By screwing a nut to the formed male screw portion, the adjacent horizontal sheet pile members 2 are connected by the connecting rod-like body 5 with the column member 1 interposed (FIG. 7).

  Thus, by integrating the three members of the adjacent sheet pile member 2 and the column member 1 interposed between them by the connecting rod-like body 5, even when the ground deformation occurs due to an earthquake or the like, A situation such as dropping of the sheet pile member 2 is prevented as much as possible.

  FIG. 9 shows that the connecting rod-like body 5 has a curved shape following an arc of a virtual circle, and the passage hole 25 of the horizontal sheet pile member 2 continues along the arc of the circle in a plan view. An example is shown. One end of the passage hole 25 is opened at the side end portion, and the other end of the passage hole 25 communicates with a recess 28 opened on the front surface 2a or the back surface 2b of the cross sheet pile member 2. In this case, after the left and right horizontal sheet pile members 2, 2 are arranged and supported on both sides of the column member 1, the one horizontal sheet pile member 2 is utilized using the recess 28 of the one horizontal sheet pile member 2. The connecting bar 5 is inserted into the passing hole 25 of the other sheet pile member 2 from the passing part 10a of the column member 1 through the passing hole 25, and nuts are respectively connected to the ends of the connecting bar 5 in the recess 28. By screwing, the adjacent sheet pile member 2 can be connected with the column member 1 interposed (FIG. 9). In FIG. 9, a broken line indicates a connecting rod 5 located below the connecting rod 5 indicated by a solid line, and the connecting rod 5 positioned below is positioned above. It is curved in the direction opposite to that of the connecting rod-like body 5. That is, in the example of FIG. 9, one horizontal sheet pile member 2 is connected to the adjacent horizontal sheet pile member 2 with the column member 1 interposed by two connecting rod-like bodies 5, 5.

  Of course, the present invention is not limited to the embodiments described above, but includes all embodiments that can achieve the object of the present invention.

W Wall-like structure 1 Column member 10 Web portion 11 Flange portion 12 Groove portion 13 Core body 14 First reinforcing steel material 2 Side sheet member 20 End portion 21 Second reinforcing steel material 22 Main reinforcement

Claims (3)

A concrete pillar member having a horizontal section with an H shape, a web portion and a flange portion, and a groove portion along the vertical direction on each side;
Between the pillar members installed adjacent to each other, a wall-like structure comprising a concrete cross-sheet pile member supported by placing an end in the groove portion,
The column member includes a core made of a shape steel, and a first reinforcing steel material that is fixed in a multistage shape with respect to the core and is positioned in the flange portion.
The said horizontal sheet pile member is a wall-shaped structure which has the 2nd reinforcement steel material integrated with the main reinforcement which comprises this horizontal sheet pile member in the said edge part.   The wall-like structure according to claim 1, wherein the pillar member includes a through-hole through which the main reinforcing bar constituting the pillar member passes through the first reinforcing steel material. The column member is provided with a passing portion of a connecting rod-like body in the web portion,
Each of the horizontal sheet pile members adjacent to each other with the pillar member interposed therebetween is provided with a passage hole of the connecting rod-like body opened at a side end face facing the groove bottom of the groove portion of the pillar member,
The adjoining sideways by the connecting rod-like body passed through the one passage hole of the adjacent lateral sheet pile member, the passage portion, and the other passage hole of the adjacent lateral sheet pile member. The wall-shaped structure of Claim 1 or Claim 2 which connects a sheet pile member.

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