JP2019218819A - Formwork structure, and forming method of formwork structure - Google Patents

Abstract

To provide a formwork structure and the like capable of reducing construction labor and cost.SOLUTION: A formwork structure provided to construct a side wall of an underground structure inside an underground continuous wall 3 includes a formwork, a separator 12, a fixture 13, a fixing portion and the like. The fixture 13 includes a rectangular plate 131 and two nuts 133. The fixture 13 is buried in the underground continuous wall 3, and one end of the separator 12 is fixed to the underground continuous wall 3 by selecting either nut 133 and fastening the one end of the separator 12 into a screw hole 133a of the nut 133. On the other hand, two holes are provided close to each other, and the other end of the separator 12 is fixed to the formwork by the fixing portion using either hole.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a mold structure and a method for forming the same.

  When constructing an underground structure, excavating the ground inside the reinforced concrete underground continuous wall as a ridge and impermeable wall, and constructing the bottom plate and side wall of the underground structure inside the underground continuous wall Much has been done.

  At the time of construction of the side wall of the underground structure, between the underground continuous wall and the formwork inside the underground structure, the main reinforcement with vertical and horizontal streaks arranged in a lattice shape is installed on the underground continuous wall side and the formwork side, respectively. It is common to cast concrete between underground continuous walls and formwork.

  Between the underground continuous wall and the formwork, a separator (connecting material) is stretched linearly by sewing the gap between the main reinforcement on the underground continuous wall side (referred to as the outer main reinforcement) and the main reinforcement on the formwork side (referred to as the inner main reinforcement). In this way, the formwork is connected to the underground continuous wall, and the structure is constructed to resist the concrete pressure generated in the formwork when concrete is poured.

  In order to arrange the separator, after these main reinforcements are installed, the outer main reinforcements are sewn to bore the underground continuous wall, and the inner main reinforcements are sewn to the inner formwork. Then, both ends of the separator are fixed using the underground continuous wall and the holes of the formwork.

  However, when drilling holes in an underground continuous wall or formwork for fixing the separator, the drilling is performed while avoiding the main reinforcement, which is troublesome and increases the construction period. Also, when drilling the underground continuous wall, the reinforcement of the underground continuous wall does not match the position of the outer main reinforcement, so when drilling from the gap between the outer main reinforcements, it contacts the underground continuous wall reinforcement and changes the location. Often drilled.

  On the other hand, in Patent Document 1, one end of an outer threaded reinforcing bar is screwed into a fixture buried in an underground continuous wall, and one end of an inner threaded reinforcing bar is screwed into a fixture buried in a formwork. It describes that the other ends of the inner and outer threaded reinforcing bars are connected by a jig. By embedding the fixing tool in advance in this way, it is possible to save time and labor for drilling. Further, it is also possible to previously drill a fixing hole in the formwork.

JP-A-10-131398

  However, when using the fixtures and holes provided in advance, the fixtures and holes are often located at positions where the main streaks of the installed side walls are covered. Cannot be fixed. As a result, it is necessary to perform the drilling again at another position to fix the connecting member, which requires labor and cost for construction.

  The present invention has been made in view of the above problems, and has as its object to provide a formwork structure and the like that can reduce the labor and cost of construction.

  A first invention for solving the above-described problem is a formwork structure in which a formwork is connected to a connection object by a connection material, and a plurality of holes are provided near both the connection object and the formwork. And the connecting member is fixed to the connection target and the form using any one of the holes.

  In the present invention, by using any one of the plurality of holes provided in the mold and its connection target for fixing the connection material, it is possible to avoid interference with the main reinforcement between the connection target and the formwork to prevent connection of the connection material. Both ends can be fixed to the formwork and its connection object, so that the construction of the formwork can be facilitated and the labor and cost can be reduced. For example, by providing a plurality of holes for fixing the connecting material, selecting one of the holes that does not cover the main reinforcement and using it for fixing the connecting material, it is possible to avoid interference with the main reinforcement and to easily connect the connecting material. Can be fixed to The above-mentioned hole may be a hole to be connected or a hole of a cylindrical body of a fixture provided on a formwork. In this case, the connecting material is fixed at an arbitrary position on the circumference around one hole. It is also possible to set the position of another hole for use, so that the interference between the connecting member and the main bar can be easily avoided.

It is preferable that the plurality of holes are provided at intervals in a direction inclined with respect to a vertical direction and a horizontal direction.
In the present invention, by providing the plurality of holes so as to be arranged in a direction inclined with respect to the vertical direction and the horizontal direction, the plurality of holes do not simultaneously cover one vertical or horizontal streak. Therefore, the probability that the connecting member can be fixed without interfering with the vertical and horizontal streaks of the main streaks can be improved.

In at least one of the connection target and the formwork, two holes arranged at intervals in a direction inclined with respect to a vertical direction and a horizontal direction, and a line segment connecting the two holes to a direction of the line segment It is desirable that holes are provided in the vicinity, which are spaced from each other in a direction crossing the vertical direction and inclined with respect to the vertical direction and the horizontal direction.
Thereby, the probability that the connecting member can be fixed without interfering with the vertical and horizontal streaks of the main bar can be further improved.

It is preferable that a fixture having a plurality of cylinders provided on a plate is embedded in the connection target or the mold, and each of the holes is a hole of the cylinder.
In the present invention, construction is easier by embedding the above-mentioned fixture in a connection object or a formwork in advance.

The plate is fixed to the cylinder by tightening bolts passed through the plate into holes of the cylinder buried in the connection object or the mold, and the cylinder is fixed to a surface of the plate opposite to the cylinder. It is also preferable that the connecting member is fixed by using a hole of another cylindrical body provided at a distance from the body. Preferably, the bolt is passed through a slot of the plate.
In this case, the position of the connecting member fixing cylinder can be set at an arbitrary position on the circumference centered on the connecting object or the tube buried in the formwork. Interference can be easily avoided. Furthermore, by passing the bolt through the long hole of the plate, the plate can be slid with respect to the bolt to adjust the position of the cylinder for fixing the connecting material, and the interference between the connecting material and the main bar can be more easily avoided. it can.

  A second invention is a method for forming a mold structure in which a mold is connected to a connection object by a connection material, wherein a plurality of holes are provided in the vicinity of both the connection object and the form, The method according to claim 1, wherein the connecting member is fixed to the connection target and the mold using the holes.

  ADVANTAGE OF THE INVENTION According to this invention, the formwork structure etc. which can reduce the labor and cost of construction can be provided.

The figure which shows the outline of the formwork structure 1. FIG. The figure which shows the fixture 13. The figure which shows the fixture 13. The figure which shows the embedding method of the fixing tool 13. FIG. 3 is a diagram illustrating an arrangement of a fixing unit and holes of a mold; The elevation view of the formwork 11. The figure which shows the construction method of the side wall of an underground structure. The figure which shows the installation range of the fixing tool 13 and the nut 140 which can fix the separator 12 without interfering with the vertical streak 51 and the horizontal streak 52 of the outer main bar 5b. The figure which shows the formwork structure 1 ', 1a, 1b, 1c. The figure which shows the fixture 13a. The figure which shows the fixture 13a. The elevation view of the formwork 11a. The figure which shows the installation range of the fixing tool 13a which can fix the separator 12 without interfering with the vertical line 51 and the horizontal line 52 of the outer main line 5b. The figure which shows the fixture 13b. The figure which shows the installation method of the fixture 13b. The figure which shows the fixture 13b '.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

[First Embodiment]
FIG. 1 is a view schematically showing a mold structure 1 according to a first embodiment of the present invention. In the present embodiment, the underground continuous wall 3 is provided on the ground 2, and the bottom slab 4 of the underground structure is constructed at an excavation point 20 inside the underground continuous wall 3. The formwork structure 1 is provided for constructing the side wall of the underground structure inside the underground continuous wall 3, and includes a formwork 11, a separator 12, a fixture 13, a fixing unit 14, and the like.

  The formwork 11 is an inner formwork arranged inside the underground continuous wall 3, and is connected to the underground continuous wall 3 to be connected by the separator 12. The mold 11 is, for example, a steel mold, a wooden mold, a concrete segment mold, or the like, but is not limited thereto.

  Between the underground continuous wall 3 and the formwork 11, an inner main reinforcement 5a is built on the formwork 11 side and an outer main reinforcement 5b is built on the underground continuous wall 3 side as main reinforcement of the side wall. Each of the inner main bar 5a and the outer main bar 5b is configured by arranging a vertical bar 51 and a horizontal bar 52 in a lattice pattern. The vertical bar 51 is a vertical bar, and the horizontal bar 52 is a horizontal bar. By arranging these rebars between the underground continuous wall 3 and the formwork 11 and casting concrete, the side wall of the underground structure is constructed.

  The separator 12 is a rod-shaped connecting member, and connects the form 11 to the underground continuous wall 3 to resist the concrete pressure applied to the form 11 at the time of placing concrete, and to maintain the shape of the form 11. One end of the separator 12 is fixed to the underground continuous wall 3 by the fixture 13, and the other end is fixed to the form 11 by the fixing unit 14.

  FIG. 2 is a view showing the fixture 13. The fixture 13 is formed by integrally fixing two nuts 133 to a rectangular plate 131 by welding or the like.

  Each nut 133 is fixed to one surface of the plate 131 at both ends in the longitudinal direction of the plate 131. The nut 133 is a cylindrical body arranged so that the axial direction is orthogonal to the surface of the plate 131, and the screw hole 133 a in the axial direction is used for fixing the separator 12.

  FIG. 3A is a view of the surface of the underground continuous wall 3, and FIG. 3B is a view showing a cross section taken along line AA in FIG. 3A. In FIG. 3A, the positions of the vertical streaks 51 and the horizontal streaks 52 of the outer main streaks 5b and the position of the plate 131 of the fixture 13 are indicated by chain lines.

  The fixture 13 is buried in the underground continuous wall 3 with the nut 133 facing the surface of the underground continuous wall 3, and is arranged such that a line segment L connecting the two nuts 133 is inclined with respect to the vertical direction and the horizontal direction. Is done. Thereby, the two nuts 133 are provided in the vicinity at an interval in the direction inclined with respect to the vertical direction and the horizontal direction.

  The inclination of the line segment L is adjusted to the inclination of the diagonal line of the section surrounded by the vertical streaks 51 and the horizontal streaks 52. The length of the line segment L is greater than 1.4 times the rebar diameter of the longitudinal bar 51 and the horizontal bar 52 (if the rebar bar diameter of the vertical bar 51 and the horizontal bar 52 is different), and is smaller than the length of the diagonal line. Value. In the present embodiment, the length is almost half of the length of the diagonal line.

  In the present embodiment, one of the nuts 133 of the fixture 13 is selected, and one end of the separator 12 is screwed into the screw hole 133a of the nut 133, whereby one end of the separator 12 is fixed to the underground continuous wall 3. You.

  The fixing device 13 is attached to the reinforcing bar of the underground continuous wall 3 in advance, and when the underground continuous wall 3 is constructed, it is built together with the reinforcing bar 31 inside the groove 30 excavated in the ground 2 as shown in FIG. Be included. The underground continuous wall 3 is constructed by placing concrete in the groove 30, and the fixture 13 is embedded in the underground continuous wall 3. The screw hole 133a of the nut 133 is previously closed with a closing material (not shown) such as a cap, thereby preventing the concrete from flowing into the underground continuous wall 3. The plugging material is removed when excavating the ground inside the underground continuous wall 3.

  FIG. 5A is a diagram illustrating the fixing unit 14. The fixing unit 14 has a plastic cone 141, a phone tie 142, a washer 143, a thick end 144, a nut 145, and the like.

  The plastic cone 141 is a substantially frustoconical member having a screw hole, and is disposed on the surface of the mold 11 on the side of the underground continuous wall 3 at a position corresponding to the hole 111 of the mold 11. The screw at the other end of the separator 12 is screwed into the screw hole of the plastic cone 141.

  The phone tie 142 is a rod material inserted into the hole 111 of the formwork 11. A screw at one end protruding toward the underground continuous wall 3 is screwed into a screw hole of the plastic cone 141, and protrudes further inside the formwork 11. The other end is provided with a washer 143 and a nut 145 that is screwed into the screw at the other end.

  An end 144 is arranged between the washer 143 and the mold 11, and the washer 143 presses the end 144 toward the form 11 by tightening a nut 145.

  FIG. 5 (b) is a view of the surface of the formwork 11 on the side of the underground continuous wall 3, and similarly to FIG. 3 (a), the positions of the vertical streaks 51 and the horizontal streaks 52 of the inner main streaks 5a are indicated by chain lines. I have.

  As shown in FIG. 5B, in the mold 11 of the present embodiment, two holes 111 are provided in advance in the vicinity, and these holes 111 are spaced from each other in a direction inclined with respect to the vertical direction and the horizontal direction. Be placed. Similarly to the nut 133 of the fixture 13, the inclination of the line segment L 'connecting the two holes 111 also matches the diagonal inclination of the section surrounded by the vertical streaks 51 and the horizontal streaks 52 of the inner main streaks 5a. . In addition, the length of the line segment L 'also exceeds 1.4 times the diameter of the reinforcing bar of the vertical bar 51 and the horizontal bar 52 (when the bar diameter of the vertical bar 51 and the horizontal bar 52 is different, the larger bar) and is smaller than the length of the diagonal line. In this embodiment, the length is approximately half the length of the diagonal line.

  In the present embodiment, the fixing portion 14 is formed by selecting one of the holes 111 and arranging the plastic cone 141, inserting the phone tie 142, installing the washer 143 and the end 144, and tightening the nut 145. Thereby, the other end of the separator 12 is fixed to the mold 11.

  FIG. 6 is an elevation view of the mold 11. The mold 11 includes a pair of the above-described two holes 111, and a plurality of pairs of the holes 111 are provided at a plurality of positions at intervals in the vertical direction and the horizontal direction.

  FIG. 7 is a diagram showing a method of constructing the side wall of the underground structure. To construct the side wall, first, as shown in FIG. 7A, the inner main reinforcing bar 5a and the outer main reinforcing bar 5b are assembled inside the underground continuous wall 3 in which the fixture 13 is buried, and the formwork 11 is installed. I do.

  Then, one of the nuts 133 of the fixture 13 is selected, and one end of the separator 12 is tightened into the screw hole 133a and fixed. Similarly, one of the two holes 111 of the mold 11 is selected, the plastic cone 141 is disposed, the phone tie 142 is inserted, the washer 143 and the end cap 144 are installed, and the nut 145 is tightened. The other end of 12 is fixed to the mold 11. Thereby, the mold structure 1 is formed as shown in FIG.

  Thereafter, as shown in FIG. 7 (c), concrete 50 is poured between the underground continuous wall 3 and the formwork 11, whereby the side wall 5 of the underground structure is constructed. By supporting the concrete pressure applied to the formwork 11 at the time of placing the concrete 50 by the separator 12, the displacement of the formwork 11 is reduced and the shape of the concrete surface is improved. The underground structure is, for example, an underground water storage tank, but is not particularly limited.

  The selection of the nut 133 of the fixture 13 and the hole 111 of the mold 11 is performed so that the separator 12 does not interfere with the inner main reinforcement 5a and the outer main reinforcement 5b. Regarding the mold 11, the hole 111 that is not selected is closed with a closing material (not shown) such as a cap.

  The closing member is made detachable from the mold 11 by, for example, a screwing type screwing with a screw (not shown) on the inner surface of the hole 111. After the side wall 5 is constructed, the mold tie 11 can be diverted by removing the phone tie 142, the washer 143, the end brace 144 and the like and removing the mold 11 as shown in FIG. 7D. The plastic cone 141 is also removed from the side wall 5, and the place where the plastic cone 141 was located is filled with mortar. After the mold 11 is moved to the next place, if the hole 111 closed by the closing material is used, the closing material is removed.

  FIG. 8A is a diagram schematically showing a positional relationship between the vertical streaks 51 and the horizontal streaks 52 of the outer main streaks 5 b and the nuts 133 of the fixture 13.

  8A does not interfere with the vertical streak 51 and the horizontal streak 52 of the outer main streaks 5b when one fixing member 13 in the direction illustrated in FIG. 2 shows an installation range of the fixture 13 that can fix the separator 12 with any of the nuts 133.

  The gray portion indicates the above-mentioned installation range with the position of the fixing device 13 as the position of the upper right nut 133. For example, in the fixing device 13 (13-1) illustrated on the right side in FIG. The nut 133 covers the vertical streak 51 and the horizontal streak 52, and the nut 133 cannot fix the separator 12. However, the lower left nut 133 does not cover the vertical streak 51 and the horizontal streak 52. The separator 12 can be fixed without interfering with the horizontal streaks 52.

  For this reason, in the case where the separator 12 cannot be fixed by either of the nuts 133 of the fixing device 13, both the two nuts 133 are located at the positions of the vertical streaks 51 and the horizontal streaks 52 as in the fixing device 13 (13-2) illustrated on the left side. Only if you are suffering from.

  On the other hand, the shaded portion in FIG. 8B interferes with the vertical streak 51 and the horizontal streak 52 of the outer main bar 5b when the nut 140 for fixing the separator 12 is provided alone for one separator 12. 3 shows an installation range of the nut 140 that can fix the separator 12 without using the same.

  In this case, if the position of the nut 140 covers the vertical streaks 51 and the horizontal streaks 52, the separator 12 interferes with these reinforcing bars and cannot be fixed by the nut 140. Therefore, the installation range of the nut 140 that can fix the separator 12 without interfering with the vertical streaks 51 and the horizontal streaks 52 is smaller than that in the case of the fixture 13.

  The diameter of the vertical streaks 51 and the horizontal streaks 52 is 32 (mm), the interval between the centers of the vertical streaks 51 and the horizontal streaks 52 is 200 (mm), the diameter of the separator 12 is 16 (mm), and the center of the vertical streaks 51 is When the ratio of the installation range in FIGS. 8A and 8B to the section D surrounded by the center of the horizontal streak 52 is estimated, the ratio of the installation range in FIG. 8A is 84.64%, and FIG. The proportion of the installation range of b) was 57.76%.

  As described above, when the fixing device 13 having the two nuts 133 for fixing the separator 12 is arranged as described above, the vertical streaks 51 and the horizontal streaks 52 of the outer main reinforcing bar 5b are compared with the case where the nut 140 is provided alone. Therefore, the probability that the separator 12 can be fixed without interfering with the operation is improved, and workability is greatly improved. By arranging the two holes 111 in the mold 11 in the same manner as the nut 133 of the fixture 13, the probability that the separator 12 can be fixed without interfering with the vertical streaks 51 and the horizontal streaks 52 of the inner main streaks 5a is improved.

  As described above, according to the first embodiment, by using any one of the nuts 133 of the fixture 13 and any one of the two holes 111 provided in the formwork 11, the main reinforcement is formed. Of the separator 12 can be fixed to the underground continuous wall 3 and the formwork 11 while avoiding the interference of the above, and the construction of the formwork structure 1 is facilitated, and the labor and cost can be reduced.

  In particular, in the present embodiment, the fixing device 13 is buried in the underground continuous wall 3 in advance, and the separator 12 is fixed using the fixing device 13, thereby facilitating construction.

  The two nuts 133 of the fixture 13 and the two holes 111 provided in the mold 11 are arranged so as to be arranged in a direction inclined with respect to the vertical direction and the horizontal direction. The positions of the two nuts 133 and the two holes 111 do not overlap at the same time. Therefore, the probability that the separator 12 can be fixed without interfering with the vertical streaks 51 and the horizontal streaks 52 is improved.

  However, the present invention is not limited to this. For example, in the present embodiment, one single separator 12 is used as the connecting material, but a screw rebar having one end fixed to the underground continuous wall 3 and a screw rebar having one end fixed to the formwork 11 are connected to each other by a coupler or the like. The connecting member may be used as a connecting member. However, the use of a single separator 12 as in the present embodiment is more advantageous in terms of cost and construction period.

  In the present embodiment, the formwork 11 is connected to the underground continuous wall 3, but may be connected to another underground structure such as an underground structure instead of the underground continuous wall 3.

  Further, as shown in a formwork structure 1 ′ of FIG. 9A, a concrete formwork 11 ′ in which the fixture 13 is embedded as described above may be connected to the underground continuous wall 3. Alternatively, as shown in the mold structure 1a of FIG. 9B, the object to which the mold 11 is connected may be the mold 11 'described above. Furthermore, as shown in the mold structure 1b of FIG. 9C, the molds 11 can be connected to each other, and as shown in the mold structure 1c of FIG. 'It is also possible to connect them.

  Hereinafter, another example of the present invention will be described as second and third embodiments. Each embodiment will be described with respect to differences from the above-described embodiments, and the same components will be denoted by the same reference numerals in the drawings and the like, and description thereof will be omitted. In addition, the configurations described in each embodiment including the first embodiment can be used in combination as needed.

[Second embodiment]
FIG. 10 is a diagram illustrating a fixing device 13a used in the second embodiment, and FIG. 11 is a diagram illustrating the fixing device 13a buried in the underground continuous wall 3 as in FIG.

  As shown in FIG. 10, the fixture 13a differs from the fixture 13 of the first embodiment in that three nuts 133 are fixed to and integrated with a T-shaped plate 131 '. Nuts 133 are located on one surface of plate 131 'at positions corresponding to the three ends of the T.

  As shown in FIG. 11, the fixture 13a is arranged such that each side of the T-shape is inclined with respect to the vertical and horizontal directions. In the present embodiment, the top side of the T is arranged in the same manner as the plate 131 of the first embodiment, and the line segment L connecting the two nuts 133 at both ends thereof has the same inclination and length as the first embodiment. become.

  The remaining one side of the T-shape intersects with the top side at a position corresponding to the center of the line segment L (substantially orthogonal in the example of FIG. 11), and the nut 133 at the tip of the one side moves from the line segment L to the one side. Are arranged at intervals D in the direction. The interval D is substantially equal to the length of the line segment L, but is not limited to this.

  FIG. 12 is an elevation view of a mold 11a used in the second embodiment. As shown in FIG. 12, in the mold 11a, a set of three nearby holes 111 is provided as a set, and a plurality of sets of the holes 111 are provided at intervals in the vertical and horizontal directions. The arrangement of the three holes 111 is the same as the arrangement of the three nuts 133 of the fixture 13a shown in FIG.

  The shaded portion in FIG. 13 indicates that the separator 12 does not interfere with the vertical streaks 51 and the horizontal streaks 52 of the outer main streaks 5b when one fixing member 13a in the direction illustrated in FIG. Shows the installation range of the fixture 13a that can fix the fixing tool 13a with any of the nuts 133.

  The gray part indicates the above-mentioned installation range with the position of the fixing device 13 being the position of the upper right nut 133. In the fixing device 13a illustrated in FIG. The two nuts 133 at both ends cover the vertical streaks 51 and the horizontal streaks 52 as in the case of the fixture 13-2 on the left side in FIG. 8A, and the separators 12 cannot be fixed with these nuts 133. The remaining one nut 133 does not cover the vertical streaks 51 and the horizontal streaks 52, and can fix the separator 12 without interfering with the vertical streaks 51 and the horizontal streaks 52.

  As described above, when the fixture 13a is used, the probability that the separator 12 can be fixed without interfering with the vertical streaks 51 and the horizontal streaks 52 of the outer main bar 5b is improved as compared with the fixture 13 of the first embodiment. In the embodiment, the separator 12 can be fixed without interfering with the vertical stripes 51 and the horizontal stripes 52, regardless of where the fixing tool 13a is located. This is the same for the mold 11a in which the three adjacent holes 111 are arranged in the same manner as the nut 133 of the fixture 13a.

  The fixture 13a and the mold 11 of the first embodiment can be used in combination, and the fixture 13 of the first embodiment and the mold 11a can be combined. Further, the number of the nuts 133 of the fixture and the number of the holes 111 in the vicinity of the mold can be four or more.

[Third Embodiment]
FIG. 14A is a diagram illustrating a fixture 13b of the third embodiment buried in the underground continuous wall 3 in the same manner as FIG. 3A. FIG. 14B is a diagram showing a cross section taken along line BB of FIG. 14A.

  As shown in FIG. 14, the fixture 13b according to the third embodiment includes a plate 131, bolts 134, nuts 133, 135, and the like.

  The plate 131 has a rectangular shape similar to that of the first embodiment. A nut 133 is located on the back surface of one end in the longitudinal direction, and the nut 133 is embedded in the underground continuous wall 3. A hole 131a is provided at a position corresponding to the nut 133 of the plate 131, and the hole 131a communicates with the screw hole 133a of the nut 133.

  The nut 133 is provided separately from the plate 131, and the shaft of a bolt 134 with a head is passed through the hole 131 a of the plate 131, and is tightened into the screw hole 133 a of the nut 133, so that the plate 131 is fixed to the nut 133.

  Another nut 135 is fixed to the surface of the other end of the plate 131 in the longitudinal direction (the surface opposite to the nut 133) by welding or the like, and is integrated with the plate 131. The nut 135 is arranged so that the axial direction is orthogonal to the surface of the plate 131, and the axial screw hole 135 a is used for fixing the separator 12.

  In the present embodiment, the nuts 133 and 135 are thus arranged in the vicinity at an interval. The distance between the nuts 133 and 135 is substantially equal to, for example, the radius of a circle (see r in FIG. 10) passing through each nut 133 of the fixture 13a, but is not limited thereto. For example, the length may be substantially equal to half the length of a line segment L (see FIG. 3A) connecting the two nuts 133 of the fixture 13.

  In the present embodiment, first, as shown in FIG. 15A, the nut 133 is embedded in the underground continuous wall 3 in the same manner as the fixture 13 of the first embodiment, and then, as shown in FIG. The plate 131 is arranged on the surface of the underground continuous wall 3 by matching the position of the hole 131 a of the 131 with the screw hole 133 a of the nut 133.

  Then, as shown in FIG. 15C, the shaft of the bolt 134 is passed through the hole 131a of the plate 131 from the surface side of the plate 131, and the tip is inserted into the nut 133 and lightly tightened. Then, if necessary, the plate 131 is rotated around the position of the nut 133, and the position of the nut 135 is adjusted so as not to cover the vertical streaks 51 and the horizontal streaks 52 of the outer main streaks 5b. After that, as shown in FIG. 15D, the bolts 134 are further tightened to fix the plate 131 to the nut 133. Further, one end of the separator 12 is fastened and fixed to the screw hole 135a of the nut 135.

  According to the third embodiment, the position of the nut 135 for fixing the separator 12 can be set to an arbitrary position on the circumference around the position of the nut 133. Therefore, interference between the separator 12 and the vertical streaks 51 and the horizontal streaks 52 of the outer main streaks 5b can be easily avoided, and the labor and cost required for the construction of the formwork structure can be reduced.

  In the third embodiment, a circular hole 131a is provided in the plate 131, but the shape of the hole is not limited to a circle. For example, a long hole 131a 'may be provided along the longitudinal direction of the plate 131 as shown in a fixture 13b' in FIG. 16 (a). The position of the nut 135 is adjusted as shown in FIG. As described above, since the fixture 131b 'can rotate and slide the plate 131, the interference between the outer main reinforcement 5b and the separator 12 can be more easily avoided.

  As described above, the preferred embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious to those skilled in the art that various changes or modifications can be made within the scope of the technical idea disclosed in the present application, and these naturally belong to the technical scope of the present invention. I understand.

1, 1 ', 1a, 1b, 1c: Formwork structure 2: Ground 3: Underground continuous wall 4: Bottom plate 5: Side wall 5a: Inner main reinforcement 5b: Outer main reinforcement 11, 11', 11a: Formwork 12: Separator 13 , 13a, 13b, 13b ': Fixture 14: Fixing part 20: Excavation point 30: Groove 31: Reinforcing bar 50: Concrete 51: Vertical bar 52: Horizontal bar 111, 131a: Hole 131, 131': Plate 131a ': Slot 133a, 135a: screw holes 133, 135, 140, 145: nut 134: bolt

Claims (7)

A formwork structure in which the formwork is connected to a connection object by a connecting material,
A plurality of holes are provided in the vicinity of both the connection target and the formwork, and the connection material is fixed to the connection target and the formwork using any one of the holes. Frame structure.   The formwork structure according to claim 1, wherein the plurality of holes are provided at intervals in a direction inclined with respect to a vertical direction and a horizontal direction. In at least one of the connection target and the formwork,
Two holes arranged at an interval in a direction inclined with respect to the vertical direction and the horizontal direction, and a line segment connecting the two holes intersects with the direction of the line segment and with respect to the vertical direction and the horizontal direction. 3. The mold structure according to claim 1, wherein holes arranged at intervals in the direction of inclination are provided in the vicinity.   The mold according to claim 2 or 3, wherein a fixture provided with a plurality of cylinders on a plate is embedded in the connection target or the mold, and each of the holes is a hole of the cylinder. Frame structure. The plate is fixed to the cylindrical body by tightening bolts passed through the plate into holes of the cylindrical body embedded in the connection target or the formwork,
2. The connecting member according to claim 1, wherein the connecting member is fixed by using a hole of another cylinder provided at a distance from the cylinder on a surface of the plate opposite to the cylinder. 3. Formwork structure.   The mold structure according to claim 5, wherein the bolt is passed through a long hole of the plate. A method for forming a formwork structure in which a formwork is connected to a connection object by a connecting material,
A plurality of holes are provided in the vicinity of both the object to be connected and the formwork, and the connecting member is fixed to the object to be connected and the formwork using any one of the holes. The method of forming the structure.

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