JP2005068710A - Form block for wall, and wall structure, and method for constructing subterranean structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide form blocks for a wall that can be simply constructed at a job site by hardly receiving restriction of a construction condition, and to provide a wall structure and a method for constructing a subterranean structure. <P>SOLUTION: The form blocks 1 for the wall are vertically piled along a steel sheet pile wall 103 to be horizontally arranged. A wall body 12 is formed to fill a space between the blocks 1 and the steel sheet pile wall 103 with concrete 108. The blocks 1 are provided with an outer plate part 2 forming one side of the wall body 12 and arm parts 3 and 3 projected in the inner face of the outer plate part 2. The blocks 1 are vertically piled along one side of the steel sheet pile wall 103 to be horizontally arranged, and the wall body 12 composed by filling the space between the outer plate part 2 of the blocks 1 and the steel sheet pile wall 103 with the cast-in-place concrete 108 can be constructed at the job site. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a method for constructing a wall form block and a wall structure and an underground structure filled with concrete on site.

  Conventionally, as this type, T-type precast blocks are stacked one after another, and the post reinforcing bars protruding from the retaining wall hollow part of the T-type precast block are extended, and the bars are arranged in the retaining wall part of the T-type precast block, There is one in which a side wall is formed by placing cast-in concrete (for example, Patent Document 1). However, in this wall structure, there is a gap between adjacent hollow portions of the retaining wall. Therefore, in order to form the wall body to the width of the hollow wall of the retaining wall, a formwork material must be separately provided outside the wall body. Don't be.

  By the way, in the construction of an underground structure having a wall body, after providing continuous underground walls on both sides of a place where the underground structure is laid, excavation between the continuous underground walls is performed (for example, Patent Document 2). ) There are cases. And since a sheet pile etc. are used for the above-mentioned continuous underground wall, and back earth pressure is added to this sheet pile which becomes this earth retaining wall, in order to prevent the fall of the continuous underground wall depending on the field, Cut beams are provided in multiple stages between the underground walls.

And, in order to construct the wall of the underground structure in the excavation hole as described above by using the cast-in-place concrete, there is a problem that the cutting beam becomes an obstacle in the mold work and the workability is lowered.
Utility Model Registration No. 30513350 (0004th stage) Japanese Patent Laid-Open No. 11-11582 (FIG. 2)

  Then, an object of this invention is to provide the construction method of the wall form block and wall structure along with an underground structure which cannot be easily received on the restrictions by construction conditions, and can be constructed | assembled simply on the spot.

  The invention according to claim 1 is vertically stacked along one side surface of the longitudinal formwork structure and arranged side by side in the left-right direction, and is filled with concrete between the formwork structure and the wall body. A wall form block to be formed, comprising an outer surface portion forming one side surface of the wall body and an arm portion protruding from the inner surface of the outer surface portion.

  The invention of claim 2 is a wall form block that is stacked in the vertical direction and arranged side by side in the horizontal direction of the wall and is filled with concrete to form a wall body, and is provided on both sides in the width direction. An outer surface portion that forms an outer surface of the wall body and a connecting arm portion that connects the outer surface portions on both sides are provided.

  According to a third aspect of the present invention, the wall formwork blocks of the first aspect are stacked in the vertical direction along one side surface of the formwork structure and arranged in the left-right direction, and the outer surface portion and the formwork structure are arranged. It is made by filling concrete between.

  According to a fourth aspect of the present invention, the wall form blocks of the second aspect are stacked in the vertical direction and are arranged in the horizontal direction, and concrete is filled between the outer surface portions on both sides.

  According to a fifth aspect of the present invention, in the construction method of the underground structure having the wall structure according to the third aspect, when the wall structure is provided along the side surface of the cut hole, the side surface of the cut hole is formed into a formwork. The wall formwork is used as a structure, after the wall formwork blocks are arranged in the left-right direction along one side surface of the formwork structure and stacked up to a height in the middle of the wall structure, and then filled with concrete. In this method, the stacking of blocks and the filling of the concrete are performed in a plurality of times at predetermined heights.

  According to a sixth aspect of the present invention, in the construction method of the underground structure having the wall structure according to the fourth aspect, when the wall structure is provided along the side surface of the cut hole, the side surface of the cut hole is provided. The wall formwork blocks are arranged in the left-right direction and stacked to a height in the middle of the wall structure, then filled with concrete, and the stacking of the wall formwork blocks and the filling of the concrete are divided into a plurality of times to a predetermined height. It is a method to be performed every time.

  According to the form block for a wall of claim 1, the blocks are stacked in the vertical direction along one side surface of the mold structure and arranged in the left-right direction, and the field is formed between the outer surface portion of the block and the mold structure. By filling the cast concrete, a wall structure in which one side surface is configured by the outer surface portion of the block and the other side surface is configured by the formwork structure can be constructed on site.

  According to the wall form block of claim 2, the blocks are stacked in the vertical direction and arranged in the horizontal direction, and the cast-in-place concrete is filled between the outer surface portions on both sides of the block so that both sides are formed by the outer surface portions of the block. The constructed wall structure can be constructed on site.

  Moreover, according to the wall structure of Claim 3, a wall structure can be simply constructed in the field using one side surface of the block as a mold.

  According to the wall structure of the fourth aspect, the wall structure can be easily constructed on site by using both sides of the block as a mold.

  Further, according to the construction method of claim 5, even after constructing a part of the wall structure by stacking blocks halfway, even on the site where construction is restricted, such as by providing a cut beam between the side surfaces of the cut hole, The wall structure can be constructed by removing the cut beams, stacking the blocks on the wall structure in the middle, and placing concrete in multiple steps in the height direction.

  Further, according to the construction method of claim 6, after building a part of the wall structure by stacking blocks halfway, even on the site where construction is restricted by providing a cut beam between the side surfaces of the cut hole, The wall structure can be constructed by removing the cut beams, stacking the blocks on the wall structure in the middle, and placing concrete in multiple steps in the height direction.

  Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention. In each embodiment, by adopting a new configuration different from the conventional one, a method for constructing a wall form block and a wall structure and an underground structure with an unprecedented function can be obtained. Respectively.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 6 show a first embodiment of the present invention. As shown in FIGS. 4 to 5 and the like, a steel sheet pile wall 103 in which a steel sheet pile 102 is continuous is formed on the side surface of the cut hole 101. In actual construction, a steel sheet pile 102 as a sheet pile is formed at the side surface position of the cut hole 101 to form a continuous steel sheet pile wall 103, and then the steel sheet pile walls 103, 103 on both sides are excavated. A cut hole 101 is formed.

  When forming a wall structure at such a site, the wall form block 1 is used. As shown in FIG. 1, the wall formwork block 1 includes an outer plate portion 2 that is an outer surface portion that is larger in the width direction than the vertical direction, and arms that are provided at both ends of the outer plate portion 2 and protrude toward the inner surface side. The outer plate portion 2 has a front rectangular shape and a flat plate shape, and a plurality of reinforcing bars 4 project from the inner surface of the outer plate portion 2, and the reinforcing bar 4 has a width. Arranged in multiple directions above and below the direction. The reinforcing bar 4 is a U-shaped gibber. The upper and lower surfaces 5 and 5 of the outer plate portion 2 and the arm portions 3 and 3 are formed to be horizontal and flat so that the blocks 1 and 1 can be stacked up and down, and are independent in the stacked state. Further, the outer plate portion 2 and the arm portion 3 have the same thickness, and the reinforcing bar protruding dimension that is the distance between the tip of the reinforcing bar 4 and the outer plate portion 2 is larger than the protruding dimension of the arm portion 3. .

  FIG. 2 shows a wall form block 1A for adjustment. This block 1A is approximately half the height of the block 1, and the block 1 is the same as the block 1 except that the reinforcing bars 4 are provided in one stage. It is the same configuration. The blocks 1 and 1A are made of precast concrete. Moreover, you may make it construct | assemble a wall structure using only the block 1A for formwork.

  The underground structure 11 constituting a passage or a water channel uses the blocks 1 and 1A for the wall body 12 thereof. A foundation block 21 made of precast concrete is used for the corner portion 14 located between the bottom slab portion 13 of the structure 11 and the wall body 12.

  The basic block 21 has a substantially L-shaped cross section, and includes an upper surface portion 22 on which the blocks 1 and 1A are overlapped, and a vertical bottom plate forming surface 23 facing the center side of the underground structure 11. Are connected to the upper end of the bottom plate forming surface 23 by a concave saddle curved surface 24. A plurality of connecting reinforcing bars 25 protrude from the upper surface portion 22 and the bottom plate forming surface 23 of the foundation block 21. By embedding these connecting reinforcing bars 25 in the cast-in-place concrete, the concrete of the wall body 12, the concrete of the bottom slab portion 13, and the foundation block 21 are integrated. The blocks 1 and 1A are longer than the base block 21 in the structure length direction.

  Next, the construction method will be described with respect to the construction described above. In the excavation hole 101, cut beams 104, 104A are provided in upper and lower multistages between the steel sheet pile walls 103, 103 on both sides (in the figure, two upper and lower stages are provided). (Illustrated). In this example, the steel sheet pile wall 103 is a formwork structure. After the earth retaining of the side surface of the cut hole 101 by the steel sheet pile wall 103, the bottom of the cut hole 101 is leveled, as a foundation of the underground structure 11, a basic crushed stone layer 105 is provided at the bottom of the cut hole 101, A foundation concrete layer 106 is formed on the foundation crushed stone layer 105 by in-situ concrete, and the upper surface of the foundation concrete layer 106 is formed flat.

  When the foundation is completed in this way, a plurality of foundation blocks 21 are arranged in the length direction of the cut hole 101 on both sides in the width direction of the cut hole 101 with the bottom plate forming surface 23 facing the center. Thereafter, the cast-in-place concrete is cast on the foundation between the foundation blocks 21 on both sides, and the bottom slab portion 13 is formed by integrating the cast-in-place concrete portion 107 and the foundation blocks 21 on both sides. Further, the block 1 is stacked on the foundation block 21, and a predetermined interval is placed between the tip of the arm portion 3 and the steel sheet pile wall 103. Also, the blocks 1, 1 adjacent in the left-right direction abut the end surfaces of the arm portions 3, 3. In this example, the blocks 1 are stacked in four upper and lower stages. First, the blocks 1 are stacked below the lower cut beam 104A. In this case, since the cut beam 104A is at the position of the second block 1 from the bottom, the first block 1 below is arranged. The arranged blocks 1 may be temporarily fixed by appropriate means as necessary until the concrete is filled. When the blocks 1 are arranged below the beam 104A in this way, the cast-in-place concrete 108 is placed between the inner surface of the block 1 and the steel sheet pile wall 103 to the upper height position of the block 1 as shown in FIG. Fill. In this case, the first placement of the concrete in the wall structure and the placement of the concrete in the on-site cast-in concrete portion 107 may be performed simultaneously. When the cast-in-place concrete 108 is hardened to a predetermined strength, a steel sheet pile wall 103 and a lower part of the wall structure in which the concrete 108 and the block 1 are integrated are formed, and a force for pressing the steel sheet pile wall 103 by the lower part of the wall structure. Is obtained. Therefore, the cut beam 104A above the block 1 can be removed, and after removing the cut beam 104A, the block 1 is overlaid under the upper cut beam 104, that is, in this example, the block 1 is the basic block. After being stacked in three steps on 21, the cast-in-place concrete 108 is filled between the block 1 and the steel sheet pile wall 103, and when the concrete 108 is cured to a predetermined strength, the upper beam 104 is removed, Block 1 is overlaid on this removed part, and the upper part of block 1 and steel sheet pile wall 103 is filled with cast-in-place concrete 108, thus forming wall 12 which is a wall structure extending from the bottom of cut hole 101 to the top. To do.

  In the figure, reference numeral 109 denotes a top end block provided on the upper portion of the wall body 12, which is made of precast concrete. Moreover, the upper part of the underground structure 11 may be opened, or may be closed by a lid (not shown). Further, in the perspective view of FIG. 6, the steel sheet pile 102 and the steel sheet pile wall 103 are not shown.

  Thus, in this embodiment, in correspondence with claim 1, the steel sheet piles are stacked in the vertical direction along the one side surface of the steel sheet pile wall 103 which is a longitudinal formwork structure, and are arranged in the horizontal direction. A wall form block 1 that forms a wall 12 by filling concrete 108 between the wall 103 and an outer plate 2 that is an outer surface forming one side of the wall 12, and the outer plate Since the arm portions 3 and 3 are provided so as to protrude from the inner surface of the block 2, the blocks 1 are stacked in the vertical direction along one side surface of the steel sheet pile wall 103 and are arranged in the horizontal direction. By constructing a wall body 12 in which one side is constituted by the outer plate part 2 of the block 1 and the other side is constituted by a steel sheet pile wall by filling the in-situ concrete 108 with the sheet pile wall 103. Can do.

  In this way, in this embodiment, corresponding to claim 3, the wall form block of claim 1 is stacked in the vertical direction along one side surface of the steel sheet pile wall 103 as the form frame structure, and left and right. Since the concrete 108 is filled between the outer plate part 2 and the steel sheet pile wall 103, which are arranged in the direction, the wall body 12 can be easily constructed on-site by using one side of the block as a formwork. can do.

  Thus, in this embodiment, corresponding to claim 5, in the construction method of the underground structure 11 having the wall structure according to claim 3, the wall constituting the wall structure along the side surface of the cut hole 101 is provided. When the body 12 is provided, the steel sheet pile wall 103 constituting the side surface of the cut-out hole 101 is used as a form frame constituting body, and the wall form block 1 is arranged in the left and right direction along the side surface of the steel sheet pile wall 103 and the wall. After stacking up to a height in the middle of the body 12, the concrete 108 is filled, and the stacking of the wall form block 1 and the concrete 108 are performed in a plurality of times at predetermined heights. , 104A, etc., even on the site where construction is restricted, after building block 1 partly by building up part of wall 12 and removing part of beam 104, 104A, Block 1 is stacked on top of each other, and the concrete 108 is struck in several steps in the height direction. By installing, the wall body 12 can be constructed.

  Further, as an effect of the embodiment, the corner block 14 is formed by arranging the precast concrete foundation blocks 21 on the left and right sides, and the blocks 1, 1... , 1... And a steel sheet pile wall 103 which is a formwork structure are filled with concrete 108 to form a wall 12, and cast-in-place concrete 107 is placed between corner portions 14, 14 on both sides. Since the bottom plate portion 13 is formed, the precast concrete block 1 is used for the formwork, the corner portion 14 is used the precast concrete block 21, and these are combined with the cast-in-place concrete 107 and 108 to form the underground structure 11. Construction can be performed easily. Moreover, since the outer-plate part 2 used as a substitute for a mold forms a comparatively thin flat plate shape, it is excellent in carrying workability.

  7 to 8 show a second embodiment of the present invention. The same reference numerals are given to the same parts as those in the first embodiment, and the detailed description thereof will be omitted. In this example, FIG. As described above, the block 1 uses arms 3A, 3A projecting on both sides of the outer plate 2 and the reinforcing bars 4A having individual tips bent in a substantially bowl shape. In the perspective view of FIG. 8, the steel sheet pile 102 and the steel sheet pile wall 103 are not shown.

  Thus, also in the present embodiment, the block 1 includes the outer plate portion 2 that is an outer surface portion that forms one side surface of the wall body 12 and the arm portions 3A and 3A that protrude from the inner surface of the outer plate portion 2. Accordingly, corresponding to the first, third and fifth aspects, the same operation and effect as the first embodiment are obtained.

  9 to 13 show a third embodiment of the present invention. The same reference numerals are given to the same parts as those in the above embodiments, and detailed description thereof will be omitted. In this example, as shown in FIG. In addition, the block 1B includes the outer plate portions 2 that are outer surface portions larger in the width direction than the vertical direction on both sides in the width direction, and are provided on both sides of the outer plate portions 2 and 2 to connect the outer plate portions 2 and 2 together. A plurality of connecting arm portions 6 are provided. A plurality of the connecting arm portions 6 are provided at intervals in the vertical direction. In this example, the connecting arm portions 6 are provided in four stages. The upper and lower surfaces 5 and 5 of the outer plate portions 2 and 2 are formed horizontally and flatly so that the blocks 1 and 1 can be stacked up and down.

  FIG. 10 shows a wall formwork block 1C for adjustment. The block 1C has a shape obtained by dividing the block 1B into two vertically and an outer plate portion provided on both sides in the width direction and forming the outer surface of the wall body. 2 and connecting arm portions 6 and 6 for connecting the outer plate portions 2 and 2 on both sides, and a plurality of connecting arm portions 6 are provided at one place. Moreover, the said outer-plate part 2 and the connection arm part 6 are the same thickness.

  The underground structure 11 constituting a passage or a water channel uses the blocks 1B and 1C for the wall 12 thereof. Further, the foundation block 21 made of precast concrete is used at the corner portion between the bottom plate portion 13 and the wall body 12 of the structure 11.

  Next, the construction method will be described with reference to the construction method. In the excavation hole 101, cut beams 104, 104A are provided in upper and lower stages between the steel sheet pile walls 103, 103 on both sides (up and down two in the figure). Steps are shown). In this example, it is not necessary to use the steel sheet pile wall 103 as a mold. As in the first embodiment, when the foundation is formed at the bottom of the cut hole 101, the base plate forming surface 23 faces the center, and the foundation blocks 21 are arranged on both sides in the width direction of the cut hole 101. Arrange several in the direction. Thereafter, the cast-in-place concrete 107 is placed between the foundation blocks 21 on both sides, and the bottom slab portion 13 is formed by integrating the cast-in-place concrete portion 107 and the foundation blocks 21 on both sides. Further, the block 1B is stacked on the foundation block 21. In this example, the blocks 1B are stacked up and down in four stages, but the blocks 1B are stacked under the beam 104A. In this case, since the cut beam 104A is at the position of the second block 1B from the bottom, the first block 1B below is arranged. The arranged blocks 1B may be temporarily fixed by appropriate means as needed until the concrete is filled. When the blocks 1B are arranged below the cutting beam 104A in this way, the cast-in-place concrete 108 is filled between the outer plate portions 2 and 2 on both sides in the thickness direction of the block 1B to the upper height position of the block 1B. In this case, the first placement of the concrete in the wall structure and the placement of the concrete in the on-site cast-in concrete portion 107 may be performed simultaneously. Further, a backfill material 111 such as earth and sand is filled between the block 1B and the steel sheet pile wall 103 and backfilled. When the cast-in-place concrete 108 is cured to a predetermined strength, the outer plate portions 2 and 2 on both sides in the width direction are used as a formwork, and the wall body 12 in which the arranged block 1B, the concrete 108 and the block 1 are integrated is formed. A lower part is formed, and a force for pressing the steel sheet pile wall 103 by the lower part of the wall body 12 is obtained. Therefore, the cut beam 104A on the block 1B can be removed, and after removing the cut beam 104A, the block 1B is overlapped under the upper cut beam 104, that is, in this example, the block 1B is replaced with the basic block. After being layered on top of 21, the cast-in-place concrete 108 is filled between the outer plate parts 2 and 2 of the block 1 B, and earth and sand are buried between the block 1 B and the steel sheet pile wall 103. When the back material 111 is filled and backfilled, and the concrete 108 is hardened to a predetermined strength, the upper beam 104 is removed, and the block 1B is overlaid on the removed portion, and the block 1B and the steel sheet pile wall 103 are placed on the site. Filled with cast concrete 108, and then backfilled with a backfill material 111 such as earth and sand between the block 1B and the steel sheet pile wall 103, and thus the wall structure extending from the lower part to the upper part of the excavated hole 101 Dripping To form a body 12.

  Therefore, after the wall body 12 is completed, the steel sheet pile 102 may be pulled out as necessary. On the other hand, if cast-in-place concrete is used for the backfill material, the wall body 12 and the steel sheet pile wall 103 are integrated to obtain a wall structure with excellent strength. In this case, the steel sheet pile 102 is not pulled out.

  The upper part of the underground structure 11 may be opened or may be closed by a lid (not shown) or the like. In the perspective view of FIG. 13, the steel sheet pile 102 and the steel sheet pile wall 103 are not shown.

  Thus, in this embodiment, corresponding to claim 2, the wall form block 1B which is stacked in the vertical direction and arranged side by side in the horizontal direction of the wall and is filled with concrete 108 to form the wall body 12 is formed. Since the outer plate portions 2 and 2 which are provided on both sides in the width direction and which form the outer surface of the wall 12 are provided, and the connecting arm portions 6 which connect the outer plate portions 2 and 2 on both sides are provided. The blocks 1B are stacked in the vertical direction and arranged in the horizontal direction, and the cast-in-place concrete 108 is filled between the outer plate portions 2 and 2 on both sides of the block 1B, so that both sides are separated by the outer plate portions 2 and 2 of the block 1B. The configured wall body 12 can be constructed on site.

  In this way, in this embodiment, corresponding to claim 4, the wall mold blocks 1B of claim 2 are stacked in the vertical direction and arranged in the horizontal direction, and the outer plate portions 2, which are the outer surface portions on both sides. Since the concrete 108 is filled between the two, the wall body 12 can be easily constructed on site by using both sides of the block 1B as a mold.

  Thus, in this embodiment, corresponding to claim 6, in the construction method of the underground structure having the wall structure according to claim 4, the wall body which is the wall structure along the side surface of the cut hole 101 is provided. When the wall 12 is provided, the wall mold blocks 1B are arranged in the left-right direction along the side surface of the cut-out hole 101 and stacked to a height in the middle of the wall body 12, and then filled with concrete 108, and the wall mold block 1B Since the stacking and filling of the concrete 108 are performed several times at predetermined heights, the block 1B is in the middle even at sites where construction is restricted, such as by providing cut beams 104, 104A, etc. between the sides of the cut hole 101 After building up a part of the wall body 12 by stacking up, the cut beams 104 and 104A are removed, the block 1B is stacked on the wall body 12 in the middle, and the concrete 108 is placed in several steps in the height direction. By doing so, the wall body 12 can be constructed.

  In addition, since the outer plate portions 2 on both sides serve as a formwork, a wall structure can be easily constructed even in the field where there is no other formwork structure.

  14 to 15 show a fourth embodiment of the present invention. The same reference numerals are given to the same parts as those of the above-mentioned embodiments, and detailed description thereof will be omitted. In this example, as shown in FIG. In addition, the block 1B is provided with the outer plate portion 2 which is an outer surface portion which is larger in the width direction than the vertical direction on both sides in the width direction, and is provided on both sides and the center of the outer plate portions 2 and 2. A plurality of connecting arm portions 6 to be connected are provided. A plurality of the connecting arm portions 6 are provided at intervals in the vertical direction. In this example, the connecting arm portions 6 are provided in two stages. The upper and lower surfaces 5 and 5 of the outer plate portions 2 and 2 are formed horizontally and flatly so that the blocks 1 and 1 can be stacked up and down.

  As described above, also in this embodiment, the block 1B is provided on the both sides in the width direction, the outer surface portions 2 and 2 forming the outer surface of the wall body 12, and the connecting arm portion 6 that connects the outer surface portions 2 and 2 on both sides. Therefore, in accordance with claims 2, 4 and 6, the same operation and effect as the second embodiment can be obtained.

  16 to 17 show a fifth embodiment of the present invention. The same reference numerals are given to the same portions as those in the above-mentioned embodiments, and detailed description thereof will be omitted. In this example, as shown in FIG. In addition, the block 1C includes the outer plate portions 2 which are outer surface portions larger in the width direction than the vertical direction on both sides in the width direction, and are provided on both sides and the center of the outer plate portions 2 and 2, respectively. A connecting arm portion 6 to be connected is provided. One connecting arm 6 is provided on each of both sides and the center. The upper and lower surfaces 5 and 5 of the outer plate portions 2 and 2 are formed horizontally and flatly so that the blocks 1 and 1 can be stacked up and down. Further, since the outer plate portion 2 of the block 1C has a shape obtained by dividing the outer plate portion 2 of the block 1B into two vertically, when the concrete 108 is filled in the middle of the wall body 12, the height dimension is finely adjusted. It can be carried out.

  As described above, also in this embodiment, the block 1B is provided on the both sides in the width direction, the outer surface portions 2 and 2 forming the outer surface of the wall body 12, and the connecting arm portion 6 that connects the outer surface portions 2 and 2 on both sides. Therefore, in accordance with claims 2, 4 and 6, the same operation and effect as the second embodiment can be obtained.

  FIG. 18 shows a sixth embodiment of the present invention. The same reference numerals are given to the same parts as those of the above-mentioned embodiments, and detailed description thereof is omitted. In this example, the underground structure of the fifth embodiment is shown. In the object 11, the bottom slab part 13 including the corner part 14 is formed by the on-site concrete 107 without using the foundation block at the corner part 14, and the entire bottom slab part 13 of the underground structure 11 is thus in-situ. It can be constructed with concrete, or although not shown, the entire bottom plate portion 13 can be made of precast concrete.

  In addition, this invention is not limited to the said Example, A various deformation | transformation implementation is possible. For example, the size and shape of the block can be selected as appropriate. Moreover, what is necessary is just to use the block used for a wall structure by accumulating at least several steps (2 steps) or more. Furthermore, in Claims 1-4, it is applicable to wall structures other than an underground structure. In addition, the underground structures include those in which the upper part is opened in addition to those completely buried in the ground. Further, the number and arrangement of the arm portions and the connecting arm portions provided in the block can be selected as appropriate.

  As described above, the wall form block and the construction method of the wall structure and underground structure according to the present invention are not easily restricted by the construction conditions, and can be easily constructed on site. It is possible to provide a construction method for wall structures and underground structures.

It is a perspective view of the block which shows 1st Example of this invention. It is a perspective view of the block which has the same height as the above same as the block of FIG. It is a perspective view of a foundation block same as the above. It is sectional drawing of an underground structure same as the above. It is sectional drawing of the underground structure under construction same as the above. It is a perspective view of the underground structure under construction same as the above. It is a perspective view of the block which shows 2nd Example of this invention. It is a perspective view of the underground structure under construction same as the above. It is a perspective view of the block which shows 3rd Example of this invention. FIG. 10 is a perspective view of a block having the same height as that of the block of FIG. 9. It is sectional drawing of an underground structure same as the above. It is sectional drawing of the underground structure under construction same as the above. It is a perspective view of the underground structure under construction same as the above. It is a perspective view of the block which shows 4th Example of this invention. It is a perspective view of the underground structure under construction same as the above. It is a perspective view of the block which shows 5th Example of this invention. It is a perspective view of the underground structure under construction same as the above. It is a perspective view of the underground structure under construction which shows the 6th example of the present invention.

Explanation of symbols

1, 1A Wall formwork block 1B, 1C Wall formwork block 2 Outer plate part (outer surface part)
3 arms 6 connecting arms
11 Underground structures
12 Wall body (wall structure)
101 Drilling hole
103 Steel sheet pile wall (formwork structure)
108 Cast-in-place concrete

Claims (6)

A wall form block that is stacked in the vertical direction along one side surface of the formwork structure in the vertical direction and arranged side by side in the left-right direction, and is filled with concrete to form a wall body with the formwork structure A wall form block comprising an outer surface portion forming one side surface of the wall body and an arm portion protruding from the inner surface of the outer surface portion. A wall form block that is stacked in the vertical direction and arranged side by side in the wall in the left and right direction, and is filled with concrete to form a wall, and is provided on both sides in the width direction to form the outer surface of the wall A wall formwork block comprising: a portion and a connecting arm portion that connects the outer surface portions on both sides. The wall formwork blocks according to claim 1 are stacked in the vertical direction along one side surface of the formwork structure and arranged in the left-right direction, and concrete is filled between the outer surface portion and the formwork structure. A wall structure characterized by A wall structure comprising the wall form blocks of claim 2 stacked in the vertical direction and arranged in the horizontal direction and filled with concrete between the outer surface portions on both sides. In the construction method of the underground structure provided with the wall structure according to claim 3, when the wall structure is provided along the side surface of the cut hole, the side surface of the cut hole is used as a mold frame structure, and the mold structure The wall formwork blocks are arranged in the left-right direction along one side of the body and stacked to a height in the middle of the wall structure, and then filled with concrete, and the wall formwork blocks are stacked and filled with the concrete. A construction method for an underground structure, which is performed at predetermined heights divided into a plurality of times. 5. The construction method of an underground structure having a wall structure according to claim 4, wherein when the wall structure is provided along the side surface of the cut hole, the wall form block is moved to the left and right along the side surface of the cut hole. The ground is arranged in a direction and stacked up to a height in the middle of the wall structure, and then filled with concrete, and the building block for wall and the filling of the concrete are divided into a plurality of times at predetermined heights. Medium structure construction method.

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