JP2008303601A - Construction of coping concrete - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate the sealing of a gap between a bottom plate of a coping block and a sheet pile wall even if laterally arranged projections and recesses on the front surface of the sheet pile are large in deviation and in unevenness, etc., and to prevent the downward leakage of concrete charged into a gap between the coping block and the sheet pile wall. <P>SOLUTION: The coping block formed of a front plate 23 and a bottom plate 24 protruding rearward from the front plate has a packing 27 fixed to the rear surface of the bottom plate 24, and support pieces 31 mounted to the bottom plate which protrude rearward from the bottom plate to be arranged below the packing, whereby the support pieces are movable along the packing. Then the block is fitted on the sheet pile 1 wall, towed toward the sheet pile wall, and a packing rear surface and support piece rear surfaces abut on the sheet pile wall, to thereby compress the packing. Further the support pieces are moved with respect to the coping block, thus making the packing seal the gap between the bottom plate and the sheet pile wall, and the support pieces located below the packing. Thereafter, the concrete 39 is charged in the gap defined by the front plate, the bottom plate, the packing, and the sheet pile wall, and the packing to which the concrete is mounted is supported by the support pieces. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technique for building shade concrete using shade blocks on a sheet pile wall.

  On the shores of the sea and rivers, sheet piles are placed next to each other in the vertical direction, and a large number of sheet piles are juxtaposed along the shore to construct sheet pile walls, earth retaining walls, and water retaining walls. Cover the sheet pile wall for revetment with a shade block. A large number of shade blocks are arranged adjacent to each other along the upper portion of the sheet pile wall. A shade block is connected to the upper part of the sheet pile wall, and concrete is packed between the shade block and the sheet pile wall to construct the shade concrete covering the upper part of the sheet pile wall.

  As illustrated in Patent Document 1 and Patent Document 2, the shade block is precast concrete, and includes a top plate, a front plate, and a bottom plate. When the shade block is placed on the sheet pile wall, the top plate is placed on the sheet pile wall, the front plate is disposed at a distance on the front side and the water side of the sheet pile wall, and the rear surface of the bottom plate is in contact with the front surface of the sheet pile wall. The shade block on the sheet pile wall connects the front plate to the sheet pile wall side with a towing tool, and presses the rear surface of the bottom plate against the front surface of the sheet pile wall. A hollow portion is formed between the bottom plate, front plate, top plate and sheet pile wall of the shade block. Raw concrete is put into the hollow part. The ready-mixed concrete hardens with the traction tool buried. The shade block is fixed to the upper part of the sheet pile wall.

JP 2006-283329 A JP 2001-140237 A

[Issues of background technology]
In the sheet pile wall, when the sheet pile is a steel sheet pile or a steel pipe sheet pile, vertical protrusions having a trapezoidal cross section or a semicircular cross section are arranged in parallel on the front surface on the water side. The front surface of the sheet pile wall is uneven in the left-right direction of the sheet pile parallel direction.

  The shade block of the precast concrete is formed with a concave and convex surface that fits the rear surface of the bottom plate into the horizontal unevenness on the front surface of the sheet pile wall. The bottom plate of the shade block has a foamed synthetic resin packing fixed to the rear surface of the concave and convex portions, and the rear surface of the packing is formed into a concave and convex surface that fits into the left and right concave portions of the front surface of the sheet pile wall. When this cap block is placed on the sheet pile wall and pulled toward the sheet pile wall, the irregularities on the rear surface of the packing and the irregularities on the rear surface of the bottom plate are engaged with and engaged with the irregularities on the front surface of the sheet pile wall. When pressed, the packing is compressed and the back of the packing is in close contact with the front of the sheet pile wall. The hollow part between the cap block and the sheet pile wall is sealed by packing between the bottom plate of the cap block and the sheet pile wall. When ready-mixed concrete is poured into the hollow part, the ready-mixed concrete is supported by the bottom plate and the packing and does not leak under the shade block.

  However, when constructing a sheet pile wall, there is an error when sequentially driving a large number of sheet piles, and the sheet pile may be driven tilted from the vertical direction. In the sheet pile wall, a sheet pile driven in the vertical direction, a sheet pile tilted in the water side or land side, and the front-rear direction, and a sheet pile tilted in the adjacent sheet pile side and the left-right direction are mixed and arranged. Then, the front surface of the sheet pile wall deviates from the planned unevenness when the unevenness in the left-right direction has no driving error. When the sheet pile is a steel sheet pile or a steel pipe sheet pile, the front of the sheet pile wall is misaligned with the protruding amount of the vertical ridge and the horizontal interval deviating from the planned values, and the horizontal unevenness is deviated from the uniform planned unevenness. Become even. Moreover, when the sheet pile is a concrete sheet pile, uneven unevenness arises in the left-right direction. Since the sheet pile wall for revetment has a large tolerance for the inclination of the sheet pile, the deviation and unevenness of the unevenness in the left-right direction on the front surface are increased.

  In order to deal with large deviations and unevenness of the front and back of the sheet pile wall, the cap block thickens the packing on the rear surface of the bottom plate. Packing increases the amount that can be reduced by compression. If the foamed synthetic resin packing is thickened and lengthened in the front-rear direction, it will be greatly bent by the ready-mixed concrete put on it. Or it peels off from the bottom plate of the shade block.

  After all, when the unevenness and unevenness of the front and back of the sheet pile wall are large, it becomes difficult to seal between the bottom plate of the shade block and the sheet pile wall. The ready-mixed concrete put into the hollow portion between the shade block and the sheet pile wall is likely to leak downward.

[Idea for solving problems]
Even if the packing on the rear surface of the bottom plate is long in the front-rear direction, the cap block is supported by a support piece from the lower side in order to exert a leak-proof function.

  However, because the front of the sheet pile wall has misalignment and unevenness in the left-right direction due to sheet pile driving errors, the amount of shrinkage that is pressed against the front of the sheet pile wall is not constant, and the length supported by the support piece Saga will be mixed. Further, the support piece cannot protrude rearward from the packing due to the presence of the sheet pile wall. Therefore, the support piece is movably attached without being fixed to the shade block, and the support length is adjusted by changing the position according to the reduction amount of the packing.

  That is, the cap block is attached to the lower side of the bottom plate, the supporting piece protrudes from the rear surface of the bottom plate to the rear side, and is placed under the packing on the rear surface of the bottom plate, and the support piece can be moved along the lower surface of the packing. To change the position.

  The shade block is placed on the sheet pile wall in a state where the support piece is arranged at the rear end of the position changeable range, and pulled toward the sheet pile wall side. Then, the rear surface of the packing and the rear surface of the support piece hit the front surface of the sheet pile wall, and the packing is compressed and the support piece moves with respect to the shade block according to the position of the hitting portion of the front surface of the sheet pile wall. The packing and the support piece are positioned up and down with the rear surface hitting the sheet pile wall. The packing seals between the bottom plate of the shade block and the sheet pile wall, and the support piece supports the packing. This concrete is supported by the lower support piece when the concrete is put on it, and it is difficult for deflection to increase. It is difficult to peel off from the bottom plate of the shade block.

  Further, the support piece is single or plural. Multiple support pieces are arranged in the left-right direction below the bottom plate of the shade block, and at each arrangement position in the left-right direction, the position is changed according to the position of the front part of the sheet pile wall, and the compression of the packing is reduced. The support length was adjusted according to the amount. The packing is supported by a plurality of support pieces arranged in the left-right direction.

  After all, when the packing is supported from the lower side with the support piece, even when the driving error of the sheet pile is large, even when the deviation or unevenness of the left and right unevenness of the sheet pile wall front is large, the gap between the bottom plate of the cap block and the sheet pile wall is Sealing is easy. Moreover, the concrete thrown into the hollow part between a cap block and a sheet pile wall becomes difficult to leak to the lower side.

1) In the method of building a shaded concrete by placing a shaded block on a piled sheet pile constructed by driving a large number of sheet piles and filling concrete between the shaded block and the sheet pile wall,
The cap block has a front plate placed on the front side of the sheet pile wall and a bottom plate protruding rearward from the front plate. The packing is fixed to the rear surface of the bottom plate, a support piece is attached to the lower side of the bottom plate, and the support piece is attached to the bottom plate. Protruding from the rear side to the bottom side of the packing, the support piece can be moved along the lower surface of the packing, and the position can be changed.
This cap block is placed on the sheet pile wall, pulled to the sheet pile wall side, the rear surface of the packing and the rear surface of the support piece are applied to the sheet pile wall, the packing is compressed and the support piece is moved relative to the cap block, and the cap is moved by the packing. Seal between the bottom plate and sheet pile wall of the block and place the support piece on the lower side of the packing,
A concrete construction method characterized by putting concrete between the front plate, bottom plate, packing and sheet pile wall of the shade block, and supporting the packing on which the concrete is placed with support pieces.

2) In the shade concrete construction method above,
A plurality of support pieces are arranged in the left-right direction below the bottom plate of the shade block, and arranged at the lower side of the packing at each arrangement position in the left-right direction so that the position can be changed along the lower surface of the packing. ,
The shade block with multiple support pieces is put on the sheet pile wall, pulled to the sheet pile wall side, the back surface of the packing and the back surface of each support piece are applied to the sheet pile wall, the packing is compressed, and each support piece is turned into the shade block In contrast, the space between the bottom plate and the sheet pile wall of the cap block is sealed by packing, and each support piece is positioned below the packing, and the packing is supported by a plurality of support pieces.

3) In the shade block that builds the shade concrete by putting concrete on the sheet pile wall and putting it on the sheet pile wall constructed by driving a large number of sheet piles,
A front plate placed on the front side of the sheet pile wall and a bottom plate that protrudes rearward from the front plate, packing is fixed to the rear surface of the bottom plate, a support piece is attached to the lower side of the bottom plate, and the support piece is placed rearward from the bottom plate Protruding and placed under the packing, the support piece can be moved along the lower surface of the packing, and the position can be changed,
The packing and the support piece are applied to the sheet pile wall with their rear surfaces pressed, the packing is compressed and the support piece is moved with respect to the bottom plate, the packing is sealed between the bottom plate and the sheet pile wall, and the support piece is placed below the packing. Shade block characterized by having a structure to be positioned.

4) In the above shade block,
A plurality of support pieces are arranged in the left-right direction below the bottom plate of the shade block, and are arranged at the lower side of the packing at each arrangement position in the left-right direction, and the position can be changed along the lower surface of the packing,
The packing and each support piece are applied to the sheet pile wall with their rear surfaces pressed, the packing is compressed and each support piece is moved with respect to the bottom plate, the packing is sealed between the bottom plate and the sheet pile wall, and each support piece is attached to the packing. It is characterized in that it is arranged on the lower side.

5) In the shaded concrete structure constructed by placing a shade block on the pile sheet wall constructed by driving a large number of sheet piles and filling concrete between the shade block and the sheet pile wall,
As for the cap block, the front plate is located on the front side of the sheet pile wall, the packing is fixed to the rear surface of the bottom plate protruding rearward from the front plate, the rear surface of the packing is pressed against the sheet pile wall, the packing is compressed, and the cap block The space between the bottom plate and the sheet pile wall is sealed,
A support piece is attached to the lower side of the bottom plate, the support piece projects rearward from the bottom plate and is located on the lower side of the packing, and the rear surface of the support piece hits the sheet pile wall,
A cap concrete structure characterized in that concrete is packed between the front plate, bottom plate, packing and sheet pile wall of the cap block, and a support piece supports the packing.

  In the sheet pile wall, even when there is a large deviation or unevenness of the front and right direction unevenness due to sheet pile driving error, sealing between the bottom plate of the shade block and the sheet pile wall is easy. Moreover, the concrete thrown in between the cap block and the sheet pile wall is difficult to leak downward.

[First example (see FIGS. 1 to 9)]
As shown in part in FIGS. 1 and 2, the wall of the sheet pile 1 has a number of steel sheet piles 1 that are sequentially adjacent to the shore and driven in the vertical direction to construct earth retaining walls and water retaining walls. The wall for this revetment has the convex surface and the concave surface of the steel sheet pile 1 arranged alternately on the front surface on the water side and the rear surface on the land side, and the vertical ridges having a trapezoidal cross section are arranged in parallel. The front surface of the sheet pile 1 wall is uneven in the left-right direction of the sheet pile parallel direction. The unevenness in the left-right direction is a polygonal line.

  A large number of shade blocks are sequentially placed adjacent to the sheet pile 1 wall and arranged in the sheet pile parallel direction. Each shade block is connected to the upper part of the sheet pile 1 wall, and concrete is packed between the wall of the sheet pile 1 to construct the shade concrete. Each shade block has the same structure and is similarly attached to the sheet pile 1 wall. Next, one cap block will be described in detail.

  As shown in FIGS. 1 and 2, a pair of cradle 2 on which the shade block is placed is attached to the upper end of the sheet pile 1 wall. The cradle 2 is fixed to the steel sheet pile 1 by welding the shape steel. Moreover, a part of 1st traction tool and a 2nd traction tool is installed in the sheet pile 1 wall. In the 1st traction tool, the shaft hole 7 which lets a traction shaft pass in the front-back direction penetrates the sheet pile 1 wall. The shaft hole 7 is provided in two places on the left and right. In the second traction tool, an eyebolt guide 12 that passes the traction line is fixed to the front surface of the wall of the sheet pile 1, and a traction mechanism is attached above the guide 12. The pulling mechanism fixes the substrate 13 to the upper end of the sheet pile 1 wall, penetrates the hole 13 through the substrate 13, and passes the screw shaft 14 of the bolt vertically through the hole. The screw shaft 14 is screwed with a nut 15 on the top, and the nut 15 is placed on the substrate 13. Moreover, the screw shaft 14 attaches the shackle fastener 16 which connects a pulling strip to a lower end. The guide tool 12 and the traction mechanisms 13 to 16 are provided at two locations on the left and right.

  As shown in FIGS. 3 to 5, the shade block 21 is a precast concrete block, and the top plate 22, the front plate 23 and the bottom plate 24 are integrally formed. The top plate 22 protrudes rearward from the front plate 23, penetrates the opening 25 for work in the center portion, and integrally forms a side plate portion 26 to be placed on the cradle 2 on the lower surfaces of the left and right side portions. On the rear surface of the front plate 23, a screw hole 8 for screwing the traction shaft of the first traction tool is provided in the upper part, and a hook-like fastener 17 of the second traction tool is attached to the lower part. The screw hole 8 and the hook-shaped fastener 17 are provided at two places on the left and right. The bottom plate 24 protrudes rearward from the front plate 23, has a protruding amount less than the top plate 22, and has a rear surface that is a concave / convex surface that fits into the left / right convexity of the front face of the sheet pile 1 wall. The bottom plate 24 has a foamed synthetic resin packing 27 fixed to the rear surface thereof. The packing 27 has a rear surface that is a concave-convex surface that fits with a horizontal concave-convex surface on the front surface of the sheet pile 1 wall. The packing 27 is long in the front-rear direction to be thick, and the amount that can be reduced by compression is increased.

  The bottom plate 24 has a plurality of support pieces 31 arranged in the left-right direction on the lower side. The steel plate support piece 31 protrudes rearward from the bottom plate 24 to the rear side and is disposed below the packing 27. The rear surface of the support piece 31 is formed to be a concave / convex surface that fits with the concave / convex surface in the left-right direction of the front surface of the sheet pile 1, and is positioned in front of the convex / concave rear surface of the packing 27. The left-right unevenness of the rear surface of the support piece 31 is a polygonal line that is almost the same as the front surface of the sheet pile 1 wall.

  The support piece 31 penetrates the fool hole 32 in the vertical direction. The bottom plate 24 has a screw hole 33 on the lower surface. The bolt 34 penetrates the washer 35, passes through the flaw hole 32, and is screwed into the screw hole 33. A washer 35 is placed on the head of the bolt 34, a support piece 31 is placed on the washer 35, and the support piece 31 supports the packing 27. The support pieces 31 are attached to the bottom plate 24 by using a fool hole 32, a screw hole 33, a bolt 34, and a washer 35 at two places on the left and right sides, respectively.

  The fool hole 32 is a long hole in which the diameter in the front-rear direction and the diameter in the left-right direction are longer than the diameter of the bolt 34 and the front-rear direction is longer than the left-right direction. The bolt 34 is loosely tightened by hand. The plate-like support piece 31 can move along the lower surface of the bottom plate 24 and the lower surface of the packing 27 when a force is applied in the plate surface direction, and the position can be changed. The range in which the position can be changed is a range in which the relative position of the fool hole 32 and the bolt 34 can be changed. Each of the plurality of support pieces 31 can change its position.

  In the shade block 21, the support pieces 31 are arranged at the center in the left-right direction at the rear end of the position changeable range. The left and right hook-shaped fasteners 17 are connected to the traction strips 11 of the second traction tool chain, respectively. The shade block 21 and the left and right traction strips 11 are lifted to the upper front side of the wall of the sheet pile 1. As shown in FIGS. 6 to 8, the left and right traction strips 11 are respectively passed through the guides 12 on the front surface of the sheet pile 1. The shade block 21 is placed on the top of the sheet pile 1 wall. That is, the side plate portion 26 is placed on the cradle 2. The top plate 22 projects the rear end behind the sheet pile 1 wall. The front plate 23 is disposed on the front side of the sheet pile 1 wall. The packing 27 fits the irregularities on the rear surface to the irregularities on the front surface of the sheet pile 1 wall, and hits the rear surface against the front surface of the sheet pile 1 wall. The bottom plate 24 fits the unevenness on the rear surface to the unevenness on the front surface of the sheet pile 1 wall. Each of the plurality of support pieces 31 fits the unevenness on the rear surface to the unevenness on the front surface of the sheet pile 1 wall.

  The left and right traction strips 11 are connected at their ends to a fastener 16 at the upper end of the sheet pile 1 wall. Moreover, the traction shaft 6 of the first traction tool is passed through the left and right shaft holes 7 of the sheet pile 1 wall, respectively. The pulling shaft 6 has a screw end protruding to the front side of the sheet pile 1 wall screwed into the screw hole 8 of the cap block 21 and a nut 9 screwed to the screw end protruding to the rear side of the sheet pile 1 wall.

  Next, in the left and right first traction tools 6 to 9, the nut 9 rotates with respect to the traction shaft 6 and presses against the wall of the sheet pile 1. By pulling the nut 9, the pulling shaft 6 is pulled toward the sheet pile 1 wall side, and the shade block 21 is pulled toward the sheet pile 1 wall side. Further, in the left and right second traction tools 11 to 17, the nut 15 rotates with respect to the screw shaft 14 to raise the screw shaft 14 and press it against the substrate 13. By tightening the nut 15, the screw shaft 14 and the fastener 16 are pulled upward, the traction strip 11 is tensioned, and the shade block 21 is pulled toward the sheet pile 1 wall side.

  Then, the shade block 21 moves to the sheet pile 1 wall side, and the bottom plate 24 approaches the sheet pile 1 wall. In the packing 27, the uneven rear surface is pressed against the uneven front surface of the wall of the sheet pile 1 to be compressed and reduced. Further, due to the approach of the bottom plate 24 to the sheet pile 1 wall, the plurality of support pieces 31 move to the front side, the right side, or the left side with respect to the bottom plate 24 with the uneven rear surface hitting the uneven front surface of the sheet pile 1 wall. The packing 27 is compressed to seal between the bottom plate 24 and the sheet pile 1 wall. Further, the support piece 31 is positioned below the packing 27 in a state where the rear surface is in contact with the front surface of the sheet pile 1 wall. The thick packing 27 is supported by the support piece 31 from the rear surface to the front surface.

  Each part of the packing 27 in the left-right direction has an amount corresponding to the position of the front surface of the sheet pile wall 1 where the part hits. The compression / reduction amount decreases as the position becomes the rear side. Conversely, the amount of compression / reduction increases as the position becomes the front side. Each of the plurality of support pieces 31 arranged in the left-right direction has an amount of movement corresponding to the position of the front face of the sheet pile wall 1 where the support piece 31 hits. The amount of movement decreases as the position becomes the rear side. Conversely, the amount of movement increases as the position becomes the front side. Even if the left and right unevenness of the front face of the sheet pile wall 1 is shifted or uneven, the packing 27 is adjusted in the amount of compression reduction of each part in the left and right direction, and extends between the bottom plate 24 and the sheet pile 1 wall from the left end to the right end. And seal. Each support piece 31 is adjusted in position or support length, and supports the packing 27 from the rear surface to the front surface.

  A hollow portion is formed between the front plate 23 and the bottom plate 24 of the shade block 21 and the packing 27 and the sheet pile 1 wall. Moreover, as shown in FIG. 9, the formwork 38 is installed between the rear end of the top plate 22 protruding to the land side and the ground surface. A hollow part is formed between the formwork 38 and the sheet pile 1 wall. The ready-mixed concrete 39 is charged into the front hollow portion and the rear hollow portion of the wall of the sheet pile 1 through the work opening 25 of the top plate 22. The packing 27 is supported by the support piece 31, and even if the ready-mixed concrete 39 is placed thereon, it is difficult to bend greatly. It is difficult to peel off from the bottom plate 24.

  The concrete 39 filled in the hollow portion is hardened in a state where the cradle 2, the second traction tools 11 to 17, and the first traction tools 6 to 9 are buried. The upper part of the cap block 21 and the sheet pile 1 wall is connected to the first traction tools 6 to 9, the second traction tools 11 to 17 and the concrete 39. In the upper part of the sheet pile 1 wall, shade concrete is constructed.

[Second Example (see FIGS. 10 to 18)]
In this example, the sheet pile wall uses a steel pipe sheet pile 4 instead of the steel sheet pile 1 in the first example. The description will focus on the differences from the first example. Other points are the same as in the first example.

  The sheet pile wall is constructed by driving a steel pipe sheet pile 4 as shown in part in FIGS. 10 and 11. This sheet pile 4 wall has the longitudinal protrusions of a semicircular cross section arranged in parallel on the front surface on the water side and the rear surface on the land side, respectively. The front surface of the sheet pile 4 wall is uneven in the left-right direction of the sheet pile parallel direction. The unevenness in the left-right direction connects arcs and straight lines alternately.

  A pair of cradle 2 is attached to the upper end of the sheet pile 4 wall as shown in FIGS. Further, the shaft hole 7 of the first traction tool is passed through the front portion of the peripheral wall of the steel pipe sheet pile 4. The guide tool 12 of the second traction tool is fixed to the front surface of the peripheral wall of the steel pipe sheet pile 4, and the traction mechanisms 13 to 16 are attached to the upper position thereof.

  In the shade block 21, as shown in FIGS. 12 to 14, the top plate 22 penetrates the working openings 25 in two left and right portions, and the side plate portions 26 are integrally formed on the lower surfaces of the left and right side portions. Yes. On the rear surface of the front plate 23, the screw hole 8 of the first traction tool is provided in the upper part, and the eye bolt fastener 17 of the second traction tool is attached to the lower part. The bottom plate 24 has a rear surface that is a concave-convex surface that fits with a concave-convex portion in the left-right direction of the front surface of the sheet pile 4 wall. The bottom plate 24 has a thick packing 27 fixed to the rear surface. In the packing 27, the rear surface is a concave / convex surface that fits with the concave / convex in the left / right direction of the front surface of the sheet pile 4 wall.

  The bottom plate 24 has a plurality of support pieces 31 arranged in the left-right direction on the lower side. The steel plate support piece 31 protrudes rearward from the bottom plate 24 to the rear side and is disposed below the packing 27. The rear surface of the support piece 31 is formed as a concave / convex surface that fits with the concave / convex in the left-right direction of the front surface of the sheet pile 4 wall, and is positioned on the front side of the concave / convex rear surface of the packing 27. The unevenness in the left-right direction on the rear surface of the support piece 31 is a linear shape in which an arc and a straight line are connected, which is substantially the same as the front surface of the sheet pile 4 wall.

  The bolt 34 penetrates the washer 35, passes through the flaw hole 32 of the support piece 31, and is screwed into the screw hole 33 on the lower surface of the bottom plate 24. A washer 35 is placed on the head of the bolt 34, a support piece 31 is placed on the washer 35, and the support piece 31 supports the packing 27. The support pieces 31 are attached to the bottom plate 24 at two left and right or three places using attachment mechanisms 32 to 35 whose positions can be changed.

  The fool hole 32 is a long hole similar to that in the first example. The bolt 34 is loosely tightened by hand. The plate-like support piece 31 can move along the lower surface of the bottom plate 24 and the lower surface of the packing 27 when a force is applied in the plate surface direction, and the position can be changed. Each of the plurality of support pieces 31 can change its position. Adjacent support pieces 31 have side portions with a flaw hole 32 stacked vertically, and a bolt 34 with a washer 35 is passed through the fool hole 32 communicated therewith. The bolt 34 with the washer 35 is shared.

  This shade block 21 arranges each support piece 31 in the center in the left-right direction at the rear end of the position changeable range. In addition, the traction strip 11 is connected to the fastener 17. The traction strip 11 is passed through the guide 12 on the wall of the sheet pile 4. The shade block 21 is put on the upper part of the sheet pile 4 wall as shown in FIGS. The packing 27 fits the unevenness of the rear surface to the unevenness of the front surface of the sheet pile 4 wall, and hits the rear surface against the front surface of the wall of the sheet pile 4. The bottom plate 24 fits the unevenness of the rear surface to the unevenness of the front surface of the sheet pile 4 wall. Each support piece 31 fits the unevenness of the rear surface to the unevenness of the front face of the sheet pile 4 wall.

  The traction strip 11 is connected to a fastener 16 at the upper end of the sheet pile 4 wall. Further, the pulling shaft 6 is passed through the shaft hole 7 in the front portion of the peripheral wall of the sheet pile 4. The pulling shaft 6 is screwed into the screw hole 8 of the cap block 21 with the screw end protruding to the front side of the sheet pile 4, and the nut 9 is screwed to the screw end protruding to the rear side of the front portion of the peripheral wall of the sheet pile 4. .

  Next, in the 1st traction tools 6-9 and the 2nd traction tools 11-17, nuts 9 and 15 are tightened and the shade block 21 is pulled to the sheet pile 4 wall side. Then, the packing 27 is pressed against the front surface of the sheet pile 4 wall and compressed and contracted to seal between the bottom plate 24 and the sheet pile 4 wall. Further, the plurality of support pieces 31 each have a rear surface that hits the front surface of the sheet pile 4 wall and moves to the front side, the right side, or the left side with respect to the bottom plate 24 to support the packing 27 from the rear surface to the front surface.

  Even if the left and right unevenness on the front face of the sheet pile wall 4 is displaced or uneven, the packing 27 is adjusted in the amount of compression reduction of each part in the left and right direction, and extends between the bottom plate 24 and the sheet pile 4 wall from the left end to the right end. And seal. Each support piece 31 is adjusted in position or support length, and supports the packing 27 from the rear surface to the front surface.

  As shown in FIG. 18, fresh concrete 39 is charged into the hollow portions between the front plate 23, the bottom plate 24 and the packing 27 and the sheet pile 4 wall. The packing 27 on which the concrete is placed is supported by a support piece 31.

[Modification]
1) In the 1st example and 2nd example of said embodiment, although a sheet pile is the steel sheet pile 1 and the steel pipe sheet pile 4, it is made a concrete sheet pile.
2) In the first example of the above embodiment, the length of the shade block 21 in the left-right direction is the length in the left-right direction of the four steel sheet piles in the wall of the sheet pile 1 but is set to other lengths.
3) In the second example of the above embodiment, the length of the shade block 21 in the left-right direction is set to the length in the left-right direction of three steel pipe sheet piles in the sheet pile 4 wall.
4) In the first example and the second example of the above-described embodiment, the attachment mechanism capable of changing the position of the support piece 31 uses the long hole fool hole 32, the screw hole 33, the bolt 34, and the washer 35. Use other mechanisms.
5) In the first example of the above-described embodiment, the number of support pieces 31 is three for one shade block 21, but other numbers are used.
6) In the second example of the above embodiment, the number of support pieces 31 is four for one shade block 21, but the other number is used.
7) In the first example and the second example of the above embodiment, the packing 27 is a foamed synthetic resin, but other elastic material is used.

The top view of the sheet pile wall in the 1st example of embodiment of this invention. AA sectional view taken on the line AA of FIG. The top view of the shade block in the example. BB sectional drawing of FIG. The bottom view of the same shade block. The top view of the state which put the shade block on the sheet pile wall in the same example. The CC sectional view taken on the line of FIG. The DD sectional view taken on the line of FIG. The vertical side view of the state which packed concrete between the shade block and the sheet pile wall in the same example. The top view of the sheet pile wall in the 2nd example of embodiment. EE sectional view taken on the line of FIG. The top view of the shade block in the example. FF sectional view taken on the line of FIG. The bottom view of the same shade block. The top view of the state which put the shade block on the sheet pile wall in the same example. The GG sectional view taken on the line of FIG. The HH sectional view taken on the line of FIG. The vertical side view of the state which packed concrete between the shade block and the sheet pile wall in the same example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sheet pile, steel sheet pile 2 Receptacle 4 Sheet pile, steel pipe sheet pile 6 Traction shaft 7 of 1st traction tool Axle hole 8 of 1st traction tool 9 Screw hole 9 of 1st traction tool 1st traction nut 6-9 First traction Tool 11 Towing strip of second traction tool, chain 12 Guide tool of second traction tool, eye bolt 13 Substrate 14 of traction mechanism of second traction tool, screw shaft of traction mechanism of second traction tool, bolt 15 Tow mechanism nut 16 Tow mechanism clasp, second shackle 17 Shackle 17 Tow mechanism clasp, hook-shaped clasp, eye bolt clasp 11-17 Second tow mechanism 13-17 Second Traction mechanism 21 Trough block, precast concrete block 22 Cap block top plate 23 Shaft block front plate 24 Cap block bottom plate 25 Cap block work opening 26 Cap block side plate 27 Packing of cap block bottom plate 31 support piece 32 fool pores of the support piece, the long hole 33 screw hole 34 bolt 35 washer 32-35 repositionable attachment mechanism 38 Formwork 39 concrete support piece

Claims (5)

In the method of building shade concrete, putting a shade block on the pile pile wall built by driving a large number of sheet piles, filling concrete between the shade block and the sheet pile wall,
The cap block has a front plate placed on the front side of the sheet pile wall and a bottom plate protruding rearward from the front plate. The packing is fixed to the rear surface of the bottom plate, a support piece is attached to the lower side of the bottom plate, and the support piece is attached to the bottom plate. Protruding from the rear side to the bottom side of the packing, the support piece can be moved along the lower surface of the packing, and the position can be changed.
This cap block is placed on the sheet pile wall, pulled to the sheet pile wall side, the rear surface of the packing and the rear surface of the support piece are applied to the sheet pile wall, the packing is compressed and the support piece is moved relative to the cap block, and the cap is moved by the packing. Seal between the bottom plate and sheet pile wall of the block and place the support piece on the lower side of the packing,
A concrete construction method characterized by putting concrete between the front plate, bottom plate, packing and sheet pile wall of the cap block and supporting the packing on which the concrete rests with support pieces. A plurality of support pieces are arranged in the left-right direction below the bottom plate of the shade block, and arranged at the lower side of the packing at each arrangement position in the left-right direction so that the position can be changed along the lower surface of the packing. ,
The shade block with multiple support pieces is put on the sheet pile wall, pulled to the sheet pile wall side, the back surface of the packing and the back surface of each support piece are applied to the sheet pile wall, the packing is compressed, and each support piece is turned into the shade block 2. The structure according to claim 1, wherein the packing is sealed between the bottom plate of the shade block and the sheet pile wall by packing, and each support piece is positioned below the packing, and the packing is supported by a plurality of support pieces. No Kasaka concrete construction method. In the shade block that covers the sheet pile wall constructed by driving a large number of sheet piles and lays concrete between the sheet pile walls to construct shade concrete.
A front plate placed on the front side of the sheet pile wall and a bottom plate that protrudes rearward from the front plate, packing is fixed to the rear surface of the bottom plate, a support piece is attached to the lower side of the bottom plate, and the support piece is placed rearward from the bottom plate Protruding and placed under the packing, the support piece can be moved along the lower surface of the packing, and the position can be changed,
The packing and the support piece are applied to the sheet pile wall with their rear surfaces pressed, the packing is compressed and the support piece is moved with respect to the bottom plate, the packing is sealed between the bottom plate and the sheet pile wall, and the support piece is placed below the packing. Shade block characterized by having a structure to be positioned. A plurality of support pieces are arranged in the left-right direction below the bottom plate of the shade block, and are arranged at the lower side of the packing at each arrangement position in the left-right direction, and the position can be changed along the lower surface of the packing,
The packing and each support piece are applied to the sheet pile wall with their rear surfaces pressed, the packing is compressed and each support piece is moved with respect to the bottom plate, the packing is sealed between the bottom plate and the sheet pile wall, and each support piece is attached to the packing. The shade block according to claim 1, wherein the shade block is configured to be positioned on a lower side. In a shaded concrete structure constructed by placing a shade block on a pile pile wall that was built by driving a large number of sheet piles and filling concrete between the shade block and the sheet pile wall,
As for the cap block, the front plate is located on the front side of the sheet pile wall, the packing is fixed to the rear surface of the bottom plate protruding rearward from the front plate, the rear surface of the packing is pressed against the sheet pile wall, the packing is compressed, and the cap block is The space between the bottom plate and the sheet pile wall is sealed,
A support piece is attached to the lower side of the bottom plate, the support piece protrudes rearward from the bottom plate and is located on the lower side of the packing, and the rear surface of the support piece hits the sheet pile wall,
A cap concrete structure characterized in that concrete is packed between the front plate, bottom plate, packing and sheet pile wall of the cap block, and a support piece supports the packing.

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