Form ruler and manufacturing method of concrete foundation using form ruler

Abstract

To provide a form ruler which has a new structure, and to provide a manufacturing method of concrete foundation using the form ruler.SOLUTION: A form ruler 100A is for forms 200A, 200B, 200C, 200D for forming a concrete foundation, and it has a ruler body 101 arranged on a top end surface of the form on one side out of the forms oppositely arranged with an interval, and it does not have a portion arranged on the top end surface of the form on the other side.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a form ruler for aligning formwork that constitutes a form connector, and also to a method for manufacturing a concrete foundation using the form ruler. [Background technology]

[0002] When constructing a concrete foundation, it is necessary to connect adjacent formworks to form a formwork connection body and align each formwork. In the straight part of the formwork connection body, it is necessary to align multiple formworks in a straight line. In addition, in the corner part of the formwork connection body, it is necessary to align the formworks at a right angle. Conventionally, in order to align the formworks, a formwork ruler is placed on the top surface of the opposing formworks.

[0003] Patent Document 1 discloses a form ruler for aligning concrete forms, which is placed and fixed across the upper edges of concrete forms provided opposite each other with a predetermined gap between them. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2009-299407 A Summary of the Invention [Problem to be solved by the invention]

[0005] The form ruler described in Patent Document 1 has a ladder shape that is arranged across both top surfaces of opposing formwork. That is, as shown in FIG. 2 of Patent Document 1, the form ruler described in Patent Document 1 has a form ruler 2a arranged on one side of the formwork, a form ruler 2b arranged on the other side of the formwork, and a part connecting the form ruler 2a and the form ruler 2b. Therefore, the form ruler described in Patent Document 1 has a problem that it is large and heavy. In addition, the form ruler described in Patent Document 1 cannot be placed on the formwork unless the formwork is installed opposite to each other. In addition, the form ruler described in Patent Document 1 cannot be placed on the formwork when the heights of the top surfaces of the opposing formwork are different from each other.

[0006] An object of the present invention is to provide a form ruler having a novel structure, and a method for manufacturing a concrete foundation using the form ruler. [Means for solving the problem]

[0007] The present invention provides the following aspects. (Section 1) A formwork ruler for a formwork for forming a concrete foundation, comprising: A ruler body is disposed on a top surface of one of the formworks disposed opposite to each other with a gap therebetween, and does not have a portion disposed on the top surface of the formwork on the other side. Formwork ruler.

[0008] (Section 2) The ruler body is made up of only straight parts. The formwork ruler described in item 1.

[0009] (Section 3) The ruler body is L-shaped. The formwork ruler described in item 1.

[0010] (Section 4) The ruler body has a through hole for inserting a pin to fix the formwork ruler to the formwork. Item 4. A formwork ruler according to any one of items 1 to 3.

[0011] (Section 5) Further provided with a movement restricting portion that restricts movement of the formwork ruler in the width direction, Item 5. A formwork ruler according to any one of items 1 to 4.

[0012] (Section 6) The movement restricting portion includes an inner restricting portion and an outer restricting portion, The inner regulating portion extends downward from the ruler body and faces the inner surface of the formwork on the one side, The outer regulating portion extends downward from the ruler body and faces the outer surface of the formwork on one side. The formwork ruler described in item 5.

[0013] (Section 7) Item 7 includes a step of placing the formwork ruler according to any one of items 1 to 6 on a formwork; A method for manufacturing concrete foundations.

[0014] (Section 8) The formwork ruler is disposed across the plurality of formworks connected in the length direction. Item 7. A method for manufacturing a concrete foundation according to item 7.

[0015] (Section 9) A plurality of the formwork rulers are arranged on the formwork, and the plurality of formwork rulers are arranged so as not to overlap each other vertically. Item 7 or 8. The method for producing a concrete foundation according to item 7 or 8.

[0016] (Section 10) At least two of the plurality of formwork rulers are spaced apart from one another in a longitudinal direction; The method further includes the step of attaching an anchor bolt fixture to the formwork at a position between the two formwork rulers spaced apart from each other, for attaching an anchor bolt. Item 10. A method for producing a concrete foundation according to item 9.

[0017] (Section 11) A step of placing an adjustment panel between two of the forms spaced apart from each other in a longitudinal direction, the step of placing a portion of the adjustment panel on a top surface of one of the forms; placing a portion of the formwork ruler over the portion of the adjustment panel; Fixing the formwork ruler and the adjustment panel to the one of the forms; The method for producing a concrete foundation according to any one of items 7 to 10, comprising:

[0018] (Section 12) Fixing the form ruler to the form with a fixture; Item 12. The method for producing a concrete foundation according to any one of items 7 to 11.

[0019] (Section 13) The fixing tool clamps the form ruler and the form in the width direction, Item 13. A method for producing a concrete foundation according to item 12.

[0020] (Section 14) The fixing device is A first portion disposed above the formwork ruler; A second portion facing the inner surface of the formwork; A third portion facing an outer surface of the formwork; Equipped with the second portion and / or the third portion are movable toward and away from the form; Item 14. A method for producing a concrete foundation according to item 13.

[0021] (Section 15) Fixing the form ruler to the formwork at three or more points with the fixing device, Item 15. The method for producing a concrete foundation according to any one of items 12 to 14. Effect of the Invention

[0022] The formwork ruler of the present invention does not have a portion that is placed on the top surface of the other formwork, so it can be made small and lightweight, and the material cost can be reduced. In addition, even if only one of the opposing formworks is installed, the formwork ruler of the present invention can be placed on the top surface of the formwork on that side. Furthermore, even if the heights of the top surfaces of the opposing formworks are different, the formwork ruler of the present invention can be placed on the top surface of the formwork. [Brief description of the drawings]

[0023] [Figure 1] FIG. 2 is a perspective view showing a state in which the formwork ruler according to the first embodiment is used. [Figure 2A] FIG. 2 is a perspective view of a formwork ruler according to the first embodiment. [Figure 2B] FIG. 2 is a plan view of the formwork ruler according to the first embodiment. [Figure 2C] FIG. 2 is a front view of the formwork ruler according to the first embodiment. [Figure 2D] FIG. 2 is a right side view of the formwork ruler according to the first embodiment. [Diagram 3] FIG. 11 is a perspective view showing a state in which a formwork ruler according to a second embodiment is used. [Figure 4A] FIG. 11 is a perspective view of a formwork ruler according to a second embodiment. [Figure 4B] FIG. 11 is a plan view of a formwork ruler according to a second embodiment. [Figure 4C] FIG. 11 is a front view of a formwork ruler according to a second embodiment. [Figure 4D] FIG. 11 is a rear view of the formwork ruler according to the second embodiment. [Figure 4E] FIG. 11 is a right side view of the formwork ruler according to the second embodiment. [Figure 4F] FIG. 11 is a left side view of a formwork ruler according to a second embodiment. [Diagram 5] FIG. 11 is a perspective view showing a state in which a formwork ruler according to a third embodiment is used. [Figure 6A] FIG. 11 is a perspective view of a formwork ruler according to a third embodiment. [Figure 6B] FIG. 11 is a plan view of a formwork ruler according to a third embodiment. [Figure 6C] FIG. 11 is a bottom view of the formwork ruler according to the third embodiment. [Figure 6D] FIG. 11 is a front view of a formwork ruler according to a third embodiment. [Figure 6E] FIG. 11 is a right side view of the formwork ruler according to the third embodiment. [Figure 7A] FIG. 2 is a perspective view of a first fixture. [Figure 7B] FIG. 13 is a perspective view showing a state in which the form ruler is fixed to the form using the first fixing device. [Figure 8A] FIG. [Figure 8B] FIG. 13 is a perspective view showing a state in which the form ruler is fixed to the form using the second fixing device. [Figure 9A] FIG. 13 is a perspective view of a third fixture. [Figure 9B] FIG. 11 is a perspective view showing a state in which the form ruler is fixed to the form using the third fixing device. [Figure 10A] FIG. 13 is a perspective view of a fourth fixture. [Figure 10B] FIG. 11 is a perspective view showing a state in which the form ruler is fixed to the form using a fourth fixing device. [Figure 11A] FIG. 13 is a perspective view of a fifth fixture in a fixed state. [Figure 11B] FIG. 13 is a perspective view of a fifth fixture in an unlocked state. [Figure 11C] FIG. 11 is a perspective view seen from the inner surface side of the formwork, showing the formwork ruler fixed to the formwork using the fifth fixing device. [Figure 11D] FIG. 11 is a perspective view seen from the outer surface side of the formwork, showing the state in which the formwork ruler is fixed to the formwork using the fifth fixing device. [Figure 12A] FIG. 13 is a perspective view of a sixth fixture. [Figure 12B] FIG. 13 is a perspective view seen from the inner surface side of the formwork, showing the state in which the formwork ruler is fixed to the formwork using a sixth fixing device. [Figure 12C] FIG. 13 is a perspective view seen from the outer surface side of the formwork, showing the state in which the formwork ruler is fixed to the formwork using a sixth fixing device. [Figure 13]FIG. 13 is a perspective view showing a state in which a plurality of form rulers are placed on a form with their longitudinal ends in contact with each other. [Figure 14] FIG. 13 is a perspective view showing a state in which an anchor bolt fastener is disposed between a plurality of form rulers and anchor bolts are attached to the anchor bolt fastener. [Figure 15A] This is an oblique view seen from the outer side of the formwork, showing an adjustment panel placed between multiple formworks and a formwork ruler placed on the formwork and the adjustment panel. [Figure 15B] 15B is an end view taken along line XVB-XVB of FIG. 15A. [Figure 15C] 15B is an end view of line XVC-XVC in FIG. 15A. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] <1. Formwork ruler> The formwork rulers 100A, 100B, and 100C of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below, and various modifications are possible without departing from the gist of the present invention.

[0025] For convenience of explanation, the length direction, width direction, and height direction shown in FIG. 1 will be explained as the length direction, width direction, and height direction of the formwork rulers 100A, 100B, 100C and the formwork 200, respectively. The length direction, width direction, and height direction are mutually perpendicular. The width direction is the direction in which a pair of formwork connecting bodies face each other. For convenience of explanation, when it is necessary to distinguish between multiple formworks 200, the formworks 200 may be given different reference numerals (200A, 200B, 200C, 200D). In addition, when there are multiple identical components, only some of the multiple identical components may be given reference numerals in order to make the drawings easier to understand.

[0026] As shown in Figures 1, 3 and 5, form rulers 100A, 100B, 100C are placed on the top surface of a formwork 200. The formwork rulers 100A, 100B, 100C align a plurality of formworks 200 constituting a formwork connection body. The formwork connection body is formed by connecting a plurality of formworks 200 adjacent in the length direction with connectors 300 such as U-shaped pins. The formwork connection body is used to form the rising portion of a concrete foundation for a building (e.g., a house).

[0027] First, a form ruler 100A according to the first embodiment will be described with reference to Fig. 1 to Fig. 2D. The bottom view of the form ruler 100A is omitted because it is symmetrical with the plan view. The front view of the form ruler 100A is omitted because it is symmetrical with the rear view. The left side view of the form ruler 100A is omitted because it is symmetrical with the right side view.

[0028] As shown in FIG. 1, the formwork 200A is adjacent to the formwork 200B in the length direction. The formwork 200A and the formwork 200B are connected by a connector 300 to form a formwork connected body. The formwork 200C and the formwork 200D face the formwork 200A and the formwork 200B, respectively, with a gap therebetween. The formwork 200C is adjacent to the formwork 200D in the length direction. The formwork 200C and the formwork 200D are connected by a connector 300 to form a formwork connected body. The formwork ruler 100A is disposed on the formworks 200A and 200B and on the formworks 200C and 200D, respectively.

[0029] The formwork ruler 100A includes a ruler body 101. The ruler body 101 is plate-shaped. The ruler body 101 is made of, for example, a metal material.

[0030] The ruler body 101 consists only of straight sections that are longer in the length direction than in the width direction. By fixing the form ruler 100A to the form 200, each form 200 of the form connection body can be aligned in a straight line.

[0031] The ruler body 101 is placed on the top end surface of one of the formworks 200 arranged opposite to each other with a gap. The formwork ruler 100A does not have a portion placed on the top end surface of the formwork 200 on the other side of the formworks 200 arranged opposite to each other with a gap. It is preferable that the formwork ruler 100A does not have a portion extending from the ruler body 101 toward the top end surface of the formwork 200 on the other side. As shown in FIG. 1, the formwork ruler 100A arranged on the formworks 200A and 200B has the ruler body 101 arranged on the top end surfaces of the formworks 200A and 200B, but does not have a portion placed on the top end surfaces of the formworks 200C and 200D, and does not have a portion extending from the ruler body 101 toward the top end surfaces of the formworks 200C and 200D. Similarly, formwork ruler 100A placed on formwork 200C and formwork 200D has a ruler body 101 placed on the top surfaces of formwork 200C and formwork 200D, but does not have a portion placed on the top surfaces of formwork 200A and formwork 200B, nor a portion extending from ruler body 101 toward the top surfaces of formwork 200A and formwork 200B.

[0032] The width of the ruler body 101 is preferably equal to or less than the width of the top surface of the formwork 200. However, since there may be variation in the width of the ruler body 101 due to manufacturing errors in the ruler body 101, or there may be variation in the width of the top surface of the formwork 200 due to manufacturing errors in the formwork 200 or differences in the manufacturers of the formwork 200, the ruler body 101 may protrude slightly from the top surface of the formwork 200 in the width direction.

[0033] The ruler body 101 may have a plurality of through holes 101a penetrating the ruler body 101. The plurality of through holes 101a may be provided at intervals in the longitudinal direction of the ruler body 101. Pin-shaped fasteners (see FIG. 7A) for fixing the form ruler 100A to the formwork 200 are inserted into the plurality of through holes 101a. Note that the through holes 101a are provided as necessary, and the through holes 101a do not necessarily have to be provided.

[0034] The formwork ruler 100B according to the second embodiment will be described with reference to Fig. 3 to Fig. 4F. The bottom view of the formwork ruler 100B is omitted because it is symmetrical with the plan view. Among the components of the formwork ruler 100B, those having the same structure and function as the formwork ruler 100A according to the first embodiment are given the same reference numerals, and the description thereof will be omitted.

[0035] The formwork ruler 100B according to the second embodiment is different from the formwork ruler 100A in that it is L-shaped. That is, the formwork ruler 100B has two straight ruler bodies 101 that intersect at a right angle, and the two ruler bodies 101 are integrated at the intersection. The lengths of the two ruler bodies 101 may be the same or different.

[0036] As shown in FIG. 3, by fixing a form ruler 100B onto a form 200 located at a corner, the form 200 at the corner can be aligned at a right angle.

[0037] The formwork ruler 100B may be provided with movement restriction parts (an inner restriction part 102 and an outer restriction part 103) which will be described later.

[0038] A formwork ruler 100C according to the third embodiment will be described with reference to Fig. 5 to Fig. 6E. The rear view of the formwork ruler 100C is omitted because it is symmetrical to the front view. The left side view of the formwork ruler 100C is omitted because it is symmetrical to the right side view. Among the components of the formwork ruler 100C, components having the same structure and function as the formwork ruler 100A according to the first embodiment are given the same reference numerals, and their description will be omitted.

[0039] Like the form ruler 100A, the form ruler 100C is used to align each form 200 of the form connected body in a straight line. As shown in Figures 6A to 6E, the form ruler 100C differs from the form ruler 100A in that it is provided with movement restriction parts (inner restriction part 102, outer restriction part 103). The movement restriction parts restrict the form ruler 100C from moving in the width direction when the form ruler 100C is placed on the form 200.

[0040] The movement regulating portion includes an inner regulating portion 102 and an outer regulating portion 103. The inner regulating portion 102 is a plate-like portion extending parallel to the length direction and the height direction. The inner regulating portion 102 is integrated with one end portion of the ruler body 101 in the width direction. The inner regulating portion 102 extends downward from one end portion of the ruler body 101 in the width direction and faces the inner surface of the formwork 200. The outer regulating portion 103 is a plate-like portion extending parallel to the length direction and the height direction. The outer regulating portion 103 is integrated with the other end portion of the ruler body 101 in the width direction. The outer regulating portion 103 extends downward from the other end portion of the ruler body 101 in the width direction and faces the outer surface of the formwork 200.

[0041] Since the formwork ruler 100C is equipped with the inner regulating portion 102 and the outer regulating portion 103, even if the formwork ruler 100C attempts to move in the width direction, the inner regulating portion 102 and / or the outer regulating portion 103 come into contact with the formwork 200, and therefore the formwork ruler 100C cannot move in the width direction.

[0042] <2. Fixture> Next, the fixtures (first fixture 410, second fixture 420, third fixture 430, fourth fixture 440, fifth fixture 450, sixth fixture 460) for fixing the formwork rulers 100A, 100B, and 100C to the formwork 200 will be described with reference to Figs. 7A to 12C. The directions of the components of the fixtures are based on the length direction, width direction, and height direction already described. Below, an embodiment in which the formwork ruler 100A is fixed to the formwork 200 will be described as an example, but the following description also applies to the case in which the formwork rulers 100B and 100C are fixed to the formwork 200.

[0043] The first fixture 410 will be described with reference to Figures 7A and 7B. As shown in Figure 7A, the first fixture 410 is a pin having a T-shape when viewed from the front. As shown in Figure 7B, the form ruler 100A can be fixed to the form 200 by placing the form ruler 100A on the top surface of the form 200, aligning the through holes 101a of the form ruler 100A with the through holes in the top surface of the form 200, and inserting the first fixture 410 into those through holes. The form ruler 100A fixed by the first fixture 410 cannot move in the length direction or width direction.

[0044] The second fixing device 420 will be described with reference to Figures 8A and 8B. As shown in Figure 8A, the second fixing device 420 is a spacing retainer that maintains the spacing between opposing forms 200. The second fixing device 420 includes a base 421 extending in the width direction, a pair of inner regulating portions 422 extending downward from the base 421, and a pair of outer regulating portions 423 extending downward from the base 421. As the second fixing device 420, a known spacing retainer (for example, the spacing retainer disclosed in Japanese Patent No. 7089824) can be used.

[0045] As shown in FIG. 8B, the formwork ruler 100A is placed on the top surface of the formwork 200, and the second fixing device 420 is placed on the formwork ruler 100A so that the ruler body 101 is sandwiched in the width direction by the inner restricting part 422 and the outer restricting part 423. The lower surface of the base part 421 located between the inner restricting part 422 and the outer restricting part 423 contacts the upper surface of the ruler body 101. The inner restricting part 422 faces one end of the ruler body 101 in the width direction and the inner surface of the formwork 200. The outer restricting part 423 faces the other end of the ruler body 101 in the width direction and the outer surface of the formwork 200. The weight and frictional force of the second fixing device 420 restrict the movement of the formwork ruler 100A in the length direction. Furthermore, even if the formwork ruler 100A attempts to move in the width direction, the formwork ruler 100A comes into contact with the inner regulating portion 422 and / or the outer regulating portion 423, and therefore the formwork ruler 100A cannot move in the width direction.

[0046] The third fixture 430 will be described with reference to FIG. 9A and FIG. 9B. As shown in FIG. 9A, the third fixture 430 includes an upper plate 431 and two side plates 432. The upper plate 431 extends parallel to the width direction and the length direction. The two side plates 432 face each other with a gap in the length direction. Each side plate 432 extends downward from the upper plate 431 parallel to the width direction and the height direction. Each side plate 432 has an opening 432a. The width of the opening 432a is slightly larger than the width of the ruler body 101 and the width of the top end surface of the formwork 200. Since the opening 432a is provided in the side plate 432, a side plate piece 432b and a side plate piece 432c are formed on both sides of the opening 432a in the side plate 432.

[0047] As shown in FIG. 9B, the formwork ruler 100A is placed on the top surface of the formwork 200, and the third fixing device 430 is placed on the formwork ruler 100A so that the side plate pieces 432b and 432c sandwich the ruler body 101 in the width direction. The ruler body 101 is placed in the openings 432a of each side plate 432. The upper edge of the opening 432a contacts the upper surface of the ruler body 101. One of the side plate pieces 432b or 432c faces one end of the ruler body 101 in the width direction and the inner surface of the formwork 200, and the other of the side plate pieces 432b or 432c faces the other end of the ruler body 101 in the width direction and the outer surface of the formwork 200. The weight and frictional force of the third fixing device 430 restrict the movement of the formwork ruler 100A in the length direction. Furthermore, even if the formwork ruler 100A attempts to move in the width direction, the formwork ruler 100A comes into contact with the side plate piece 432b and / or the side plate piece 432c, and therefore the formwork ruler 100A cannot move in the width direction.

[0048] The fourth fixture 440 will be described with reference to Figures 10A and 10B. As shown in Figure 10A, the fourth fixture 440 includes an upper plate 441, a first side plate 442, and a second side plate 443. The upper plate 441 extends parallel to the width direction and the length direction. The first side plate 442 faces the second side plate 443 with a gap in the width direction. The first side plate 442 and the second side plate 443 extend downward from the upper plate 431 parallel to the length direction and the height direction. The gap between the inner surface of the first side plate 442 and the inner surface of the second side plate 443 is slightly larger than the width of the ruler body 101 and the width of the top end surface of the formwork 200.

[0049] As shown in FIG. 10B, the formwork ruler 100A is placed on the top surface of the formwork 200, and the fourth fixing device 440 is placed on the formwork ruler 100A so that the ruler body 101 is sandwiched between the first side plate 442 and the second side plate 443 in the width direction. The lower surface of the upper plate 441 contacts the upper surface of the ruler body 101. One of the first side plate 442 or the second side plate 443 faces one end of the ruler body 101 in the width direction and the inner surface of the formwork 200, and the other of the first side plate 442 or the second side plate 443 faces the other end of the ruler body 101 in the width direction and the outer surface of the formwork 200. The weight and frictional force of the fourth fixing device 440 restrict the movement of the formwork ruler 100A in the length direction. Furthermore, even if the formwork ruler 100A attempts to move in the width direction, the formwork ruler 100A comes into contact with the first side plate 442 and / or the second side plate 443, and therefore the formwork ruler 100A cannot move in the width direction.

[0050] The fifth fixture 450 will be described with reference to Figures 11A to 11D. As shown in Figures 11A and 11B, the fifth fixture 450 includes a fixed member 451, a movable member 452, and an axis member 453. As will be described later, the fifth fixture 450 can be switched between a fixed state (Figure 11A) in which the formwork ruler 100A is fixed to the formwork 200 and an unfixed state (Figure 11B) in which the formwork ruler 100A is not fixed to the formwork 200 by rotating the movable member 452.

[0051] The fixing member 451 includes an upper plate 4511, a side plate 4512, and a mounting plate 4513. The upper plate 4511 extends parallel to the width direction and the length direction. The side plate 4512 is a portion that faces the inner surface of the formwork 200 when the fifth fixing tool 450 is used. The side plate 4512 extends downward from an end of the upper plate 4511 in the width direction, parallel to the length direction and the height direction. The mounting plate 4513 is a portion to which the movable member 452 is attached. The mounting plate 4513 is provided with a gap between it and the side plate 4512 in the width direction. The mounting plate 4513 extends downward from the upper plate 4511, parallel to the width direction and the height direction.

[0052] The movable member 452 is rotatably attached to the mounting plate 4513 by an axis member 453. The axis member 453 is, for example, a pin. The axis member 453 may be integrated with the fixed member 451 or the movable member 452. The movable member 452 includes a base 4521, an opposing portion 4522, and a handle 4523. The movable member 452 is movable between a fixed state (FIG. 11A) in which the form ruler 100A is fixed to the form 200, and an unfixed state (FIG. 11B) in which the form ruler 100A is not fixed to the form 200.

[0053] The base portion 4521 is in the form of a plate extending parallel to the width direction and the height direction. The base portion 4521 is joined to the attachment plate 4513 by inserting the shaft member 453. The shaft member 453 is inserted into the upper portion of the base portion 4521.

[0054] The facing portion 4522 is a portion that faces the outer surface of the formwork 200 when the fifth fixing device 450 is in use. The facing portion 4522 is in the form of a plate extending in the longitudinal direction from one of both widthwise ends of the base portion 4521 that is closer to the side plate 4512. As shown in Fig. 11A, when the fifth fixing device 450 is in the fixed state, the facing portion 4522 is parallel to the height direction.

[0055] The handle 4523 is a part that the user operates when rotating the movable member 452. The handle 4523 extends in the length direction from the end of the base 4521 farther from the side plate 4512 out of both ends in the width direction of the base 4521. The handle 4523 is plate-like and extends parallel to the length direction and height direction. The handle 4523 is provided at the lower part of the base 4521. The farther the position of the handle 4523 is from the shaft member 453 (the rotation center of the movable member 452), the more preferable it is. By increasing the distance from the shaft member 453 to the handle 4523, less force is required to rotate the movable member 452 due to the principle of leverage.

[0056] Prepare the fifth fixture 450 in an unfixed state as shown in FIG. 11B, and as shown in FIG. 11C and FIG. 11D, place the formwork ruler 100A on the top end surface of the formwork 200, and cover the formwork ruler 100A with the fifth fixture 450 so that the side plate 4512 is on the inner surface side of the formwork 200 and the movable member 452 is on the outer surface side of the formwork 200. The lower surface of the upper plate 4511 contacts the upper surface of the ruler body 101. The movable member 452 is rotated toward the outer surface of the formwork 200, and the facing part 4522 contacts the outer surface of the formwork 200. The facing part 4522 may contact not only the upper frame of the formwork 200 (a frame part extending in the length direction provided at the upper end of the outer surface of the formwork 200) but also a vertical rib (a rib extending downward from the upper frame). The form ruler 100A can be fixed to the form 200 by sandwiching the form ruler 100A and the form 200 in the width direction between the side plates 4512 and the opposing portions 4522.

[0057] To release the fixation of the formwork ruler 100A by the fifth fixing device 450, the movable member 452 is rotated in a direction away from the side plate 4512 (i.e., in a direction away from the outer surface of the formwork 200). When the movable member 452 is rotated in this manner, the facing portion 4522 is inclined in the height direction as shown in Fig. 11B, and is no longer in contact with the outer surface of the formwork 200 and the formwork ruler 100A.

[0058] The fifth fixing device 450 may be attached so that the side plate 4512 faces the outer surface side of the formwork 200 and the movable member 452 faces the inner surface side of the formwork 200. Alternatively, instead of the side plate 4512, a mounting plate 4513, a movable member 452, and an axis member 453 may be provided, and the formwork ruler 100A and the formwork 200 may be sandwiched between the two movable members 452 from both the outer surface side and the inner surface side of the formwork 200. Also, instead of a structure in which the movable member 452 rotates, the movable member 452 may be structured to be slidable in the width direction, and the formwork ruler 100A and the formwork 200 may be sandwiched from the width direction.

[0059] The sixth fixing device 460 will be described with reference to FIG. 12A to FIG. 12D. As shown in FIG. 12A, the sixth fixing device 460 includes a fixing member 461 and a wedge 462. The fixing member 461 includes an upper plate 4611 and a side plate 4612. The upper plate 4611 extends parallel to the width direction and the length direction. The width of the upper plate 4611 is greater than the width of the ruler body 101 and the width of the top end surface of the formwork 200. The upper plate 4611 has a through hole 4611a for inserting the wedge 462. The through hole 4611a is elongated in the width direction. The side plate 4612 extends downward from the end of the width direction of the upper plate 4611 parallel to the length direction and the height direction. The wedge 462 has an inverted triangular shape whose width gradually decreases toward the bottom.

[0060] As shown in FIG. 12B, the formwork ruler 100A is placed on the top surface of the formwork 200, and the fixing member 461 is placed on the formwork ruler 100A so that the side plate 4612 faces the inner surface of the formwork 200. The lower surface of the upper plate 4611 contacts the upper surface of the ruler body 101. The wedge 462 is inserted into the through hole 4611a. When the wedge 462 is inserted into the through hole 4611a, the inner surface of the side plate 4612 contacts one end of the ruler body 101 in the width direction and the inner surface of the formwork 200, and the wedge 462 contacts the other end of the ruler body 101 in the width direction and the outer surface of the formwork 200. The formwork ruler 100A can be fixed to the formwork 200 by sandwiching the formwork ruler 100A and the formwork 200 from the width direction by the side plate 4612 and the wedge 462.

[0061] The number of fixtures used for one form ruler 100A is not limited, but it is preferable to use multiple fixtures for one form ruler 100A, and more preferably to use three or more fixtures for fixing. It is preferable that the multiple fixtures are arranged apart from each other. When three fixtures are used for one form ruler 100A, it is preferable that the fixtures are attached near both ends of the ruler body 101 in the longitudinal direction and near the center of the form ruler 100A in the longitudinal direction.

[0062] The form ruler 100A may be fixed to the form 200 using only one type of fastener, or the form ruler 100A may be fixed to the form 200 using a combination of multiple types of fasteners.

[0063] Since the formwork ruler 100C already has movement restriction parts (the inner restriction part 102 and the outer restriction part 103), it is not always necessary to use a fixing tool.

[0064] Although not shown, the form ruler 100A can also be fixed to the form 200 by clamping the form ruler 100A and the form 200 with a known clamping tool such as a vice.

[0065] <3. Concrete foundation manufacturing method> A method for manufacturing a concrete foundation using formwork rulers 100A, 100B, and 100C will be described. In the following, an embodiment using formwork ruler 100A will be described as an example, but the following description also applies to embodiments using formwork rulers 100B and 100C. In addition, only one of formwork rulers 100A, 100B, and 100C may be used, or multiple types may be used in combination.

[0066] First, as shown in FIG. 13, a plurality of formworks 200 adjacent to each other in the longitudinal direction are connected by connectors 300 such as U-shaped pins to form a formwork assembly.

[0067] The ruler body 101 of the formwork ruler 100A is placed on the top surface of the formwork 200. A fixing device is used to fix the formwork ruler 100A to the formwork 200. As already mentioned, a fixing device may or may not be used for the formwork ruler 100C.

[0068] 13, the form ruler 100A may be disposed so as to straddle a plurality of formworks 200 in the length direction. In other words, the ruler body 101 may be disposed so as to straddle the joints between the formworks 200.

[0069] When multiple form rulers 100A are arranged on the form 200, the multiple form rulers 100A may be arranged one above the other.

[0070] When multiple form rulers 100A are arranged on the form 200, the multiple form rulers 100A may be arranged so as not to overlap one another vertically.

[0071] As shown in FIG. 13, multiple formwork rulers 100A may be arranged so that the longitudinal ends of the ruler bodies 101 are butted against each other (i.e., the longitudinal ends of the ruler bodies 101 are in contact with each other).

[0072] As shown in FIG. 14, a plurality of formwork rulers 100A may be arranged at intervals between the longitudinal ends of the ruler body 101. The intervals may be large enough to accommodate an anchor bolt fixture 500. The anchor bolt fixture 500 may be attached to the formwork 200 at a position between the longitudinal ends of the plurality of formwork rulers 100A. An anchor bolt 600 is suspended from the anchor bolt fixture 500. A known anchor bolt fixture may be used as the anchor bolt fixture 500. For example, a one-sided anchor plate or a slide anchor plate (both manufactured by NSP Co., Ltd.) may be used as the anchor bolt fixture 500.

[0073] The anchor bolt fixture 500 may be placed on top of the formwork ruler 100A.

[0074] As shown in FIG. 15A, an adjustment panel 700 may be disposed between the formwork 200A and the formwork 200B. The adjustment panel 700 is a formwork for adjusting dimensions used in a place where a general formwork 200 cannot be assembled perfectly due to collapse or the like. For example, a slide panel or a backing plate (both manufactured by NSP Co., Ltd.) can be used as the adjustment panel 700. As shown in FIG. 15A to FIG. 15C, the adjustment panel 700 includes an upper frame 701, a side frame 702, and a panel portion 703. The upper frame 701 is elongated in the length direction longer than in the width direction. The width of the upper frame 701 is approximately the same as the width of the top end surface of the formwork 200. The upper frame 701 may have a through hole for inserting a pin-shaped fixture (for example, the first fixture 410). As shown in FIG. 15B, a part of the upper frame 701 is disposed on the top end surface of the formwork 200A. The side frame 702 extends downward from one end of the upper frame 701 in the length direction, parallel to the width direction and the height direction. The side frame 702 is connected to the formwork 200B by the connector 300. The panel portion 703 is a plate-like member extending parallel to the length direction and the height direction from one end of the upper frame 701 and the side frame 702 in the width direction. The inner surface of the panel portion 703 is the surface that comes into contact with the concrete. As shown in FIG. 15B, a part of the panel portion 703 is arranged so as to cover a part of the inner surface of the formwork 200A. As shown in FIG. 15A, the formwork ruler 100A is arranged across the formwork 200A, the adjustment panel 700, and the formwork 200B. As shown in FIG. 15B, a part of the upper frame 701 is sandwiched between the formwork 200A and the ruler body 101. The form ruler 100A may be secured to the form 200A together with the adjustment panel 700 by fasteners.

[0075] Concrete is poured between a pair of formwork connectors, and after the concrete has hardened, the forms are removed to complete the concrete foundation.

[0076] <4. Effects> By fixing the formwork rulers 100A, 100B, and 100C of the present invention to the formwork 200, the formwork 200 can be aligned along the formwork rulers 100A, 100B, and 100C. Therefore, by using the formwork rulers 100A and 100C, the formwork 200 can be aligned in a straight line. In addition, by using the formwork ruler 100B, the corners of the formwork connection body can be accurately set at right angles.

[0077] Conventional form rulers (for example, the form ruler described in Patent Document 1) are structured to be placed across the top end surface of the opposing formwork 200. Therefore, there is a problem that the form ruler becomes large and heavy. In addition, the conventional form ruler cannot be placed on the top end surface of the formwork 200 until the formwork 200 is placed opposite to each other. In contrast, the formwork rulers 100A, 100B, and 100C of the present invention have a ruler body 101 placed on the top end surface of the formwork 200 on one side that is placed opposite to each other with a gap therebetween, but do not have a portion placed on the top end surface of the formwork 200 on the other side. Therefore, the formwork rulers 100A, 100B, and 100C can be made smaller and lighter, and the material cost can be reduced. In addition, the formwork rulers 100A, 100B, and 100C of the present invention can be placed on the top end surface of the formwork 200 on one side even when only the formwork 200 on one side is installed. Furthermore, the formwork rulers 100A, 100B, 100C of the present invention can be placed on the top surface of the formwork 200 even if the heights of the top surfaces of the formworks 200 arranged opposite each other are different.

[0078] The formworks 200 adjacent in the length direction are connected to each other using the connector 300. When the formworks 200 and the connector 300 are repeatedly used for many years, the formworks 200 and the connector 300 deteriorate, and the connector 300 weakens the fastening of the formworks 200 to each other, and a small gap may be formed between the adjacent formworks 200. When a large number of formworks 200 are connected, these small gaps pile up, and the overall dimension in the length direction of the formwork connection body deviates from the specified dimension (design dimension). When the overall dimension in the length direction of the formwork connection body deviates, the angle of the corner part also deviates from the specified angle. By fixing the formwork rulers 100A, 100B, and 100C to the formworks 200, the gap between the formworks 200 can be narrowed, and as a result, the length of the formwork connection body can be corrected.

[0079] Since the formwork ruler 100C is provided with the movement restricting parts (the inner restricting part 102 and the outer restricting part 103), the movement of the formwork ruler 100C in the width direction can be restricted.

[0080] The joints between the multiple formworks 200 adjacent in the length direction are weak in strength. Therefore, when concrete is poured, the joints between the multiple formworks 200 tend to bulge outward due to the pressure of the concrete. Therefore, by arranging the formwork rulers 100A, 100B, and 100C so as to straddle the multiple formworks 200 in the length direction, the joints between the multiple formworks 200 can be reinforced, and the formworks 200 can be prevented from moving outward at the joints. In particular, it is preferable that the formwork rulers 100A and 100C are arranged straddling in the length direction on the multiple formworks 200 forming the straight part of the outer periphery foundation, because in order to form the straight part of the outer periphery foundation, a large number of formworks 200 must be connected, and therefore there are many joints between the formworks 200, and the formworks 200 are likely to bulge outward when concrete is poured.

[0081] By arranging a plurality of form rulers 100A, 100B, 100C at intervals in the longitudinal direction between their ruler bodies 101, a space for installing anchor bolt fixtures 500 on formwork 200 can be secured.

[0082] By fixing each of the formwork rulers 100A, 100B, 100C to the formwork 200 at multiple locations, preferably at three or more locations, movement of the formwork rulers 100A, 100B, 100C can be further suppressed.

[0083] The second fastener 420, the third fastener 430, the fourth fastener 440, the fifth fastener 450 and the sixth fastener 460 can also be used when fixing the form rulers 100A, 100B, 100C to a form 200 that does not have a through hole (pin hole). [Explanation of symbols]

[0084] 100A Formwork ruler 100B Formwork ruler 100C Formwork ruler 101 Ruler body 101a through hole 102 Inner regulation part 103 Outer regulation part 200 Formwork 410 1st fixture 420 Second fixture 430 Third fixture 440 4th fixture 450 5th fixture 460 6th fixture 500 Anchor bolt mounting fixture 600 Anchor Bolt 700 Adjustment Panel

Claims

1. A formwork ruler for a formwork for forming a concrete foundation, comprising: A ruler body is disposed on a top surface of one of the formworks disposed opposite to each other with a gap therebetween, and does not have a portion disposed on the top surface of the formwork on the other side. Formwork ruler.

2. The ruler body is made up of only straight parts. The formwork ruler according to claim 1.

3. The ruler body is L-shaped. The formwork ruler according to claim 1.

4. The ruler body has a through hole for inserting a pin to fix the formwork ruler to the formwork. The formwork ruler according to claim 1.

5. Further provided with a movement restricting portion that restricts movement of the formwork ruler in the width direction, The formwork ruler according to claim 1.

6. The movement restricting portion includes an inner restricting portion and an outer restricting portion, The inner regulating portion extends downward from the ruler body and faces the inner surface of the formwork on the one side, The outer regulating portion extends downward from the ruler body and faces the outer surface of the formwork on one side. The formwork ruler according to claim 5.

7. The method comprises the steps of: placing a form ruler according to any one of claims 1 to 6 on a form; A method for manufacturing concrete foundations.

8. The formwork ruler is disposed across the plurality of formworks connected in the length direction. The method for manufacturing a concrete foundation according to claim 7.

9. A plurality of the formwork rulers are arranged on the formwork, and the plurality of formwork rulers are arranged so as not to overlap each other vertically. The method for manufacturing a concrete foundation according to claim 7.

10. At least two of the plurality of formwork rulers are spaced apart from one another in a longitudinal direction; The method further includes the step of attaching an anchor bolt fixture to the formwork at a position between the two formwork rulers spaced apart from each other, for attaching an anchor bolt. The method for manufacturing a concrete foundation according to claim 9.

11. A step of placing an adjustment panel between two of the formworks spaced apart from each other in a longitudinal direction, the step of placing a portion of the adjustment panel on a top surface of one of the formworks; placing a portion of the formwork ruler over the portion of the adjustment panel; Fixing the formwork ruler and the adjustment panel to the one of the forms; The method for producing a concrete foundation according to claim 7, comprising:

12. Fixing the form ruler to the form with a fixture; The method for manufacturing a concrete foundation according to claim 7.

13. The fixing tool clamps the form ruler and the form in the width direction, The method for manufacturing a concrete foundation according to claim 12.

14. The fixing device is A first portion disposed above the formwork ruler; A second portion facing the inner surface of the formwork; A third portion facing an outer surface of the formwork; Equipped with the second portion and / or the third portion are movable toward and away from the form; The method for manufacturing a concrete foundation according to claim 13.

15. The step of fixing the form ruler to the formwork by the fixing device at three or more points is included. The method for manufacturing a concrete foundation according to claim 12.

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