Lattice Installation Jig and Lattice Installation Method

Abstract

To provide a finishing stake installation jig and a finishing stake installation method which dispense with work for fixing existing concrete to a foundation surface and work for releasing the fixation, facilitate movement and position adjustments, and can efficiently perform form installation work.SOLUTION: A finishing stake installation jig 10 for installing a finishing stake instrument 40 for positioning a form 20 in weir construction has: a base part 11 mounted on a form installation surface; upright parts 12 and 13 standing upright from the base part 11; and an adjustment part 14 for adjusting inclination of the base part 11. The inclination of the base part 11 is adjusted by the adjustment part 14, a weight 2 is loaded on the base part 11 and makes the form installation surface stable, and the finishing stake instrument 40 is mounted on the upright parts 12 and 13. A weir wall is marked and a guide member 7 is mounted on the finishing stake instrument 40, and the form 20 is pushed against and the guide member 7 and is positioned.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a buttressing installation jig and a buttressing installation method for installing a buttressing device for positioning a formwork in a dike construction.

Background Art

[0002] Conventionally, dike construction has been carried out to block the flow of water and sediment in a river. As shown in FIG. 4, the dike construction involves building a dike 1 across a river 60 flowing between mountains 70, 70.

[0003] As shown in the cross-sectional view of FIG. 5, the dike 1 has a trapezoidal cross-sectional shape that narrows upward and has dike walls inclined with respect to each of the river 50 (upstream) and the river 60 (downstream). Further, as shown in FIG. 6, in the construction of the dike 1, concrete is placed in each stage in the order of 1a → 1b → 1c → 1d from the bottom up, so it is necessary to align the inclination angles of each stage. Therefore, buttressing devices are used to install the formwork for placing concrete at an accurate position and gradient.

[0004] Conventional buttressing devices are assembled by fixing wooden pillars to the base surface of existing concrete using anchors or the like. After fixing, the formwork is installed along the buttressing device, and after installing the formwork, the fixing of the wooden pillars to the base surface is released and removed.

[0005] Regarding the formwork used in the dam surface method, Patent Document 1 describes a formwork including a weir member 11 provided along the periphery of a concrete placement area X and a support member 12 that supports the weir member 11 in an inclined state with respect to the concrete placement area X, enabling early removal and reuse of the formwork.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] Conventional bracing equipment requires fixing work and fixing release work using anchors etc. on the base surface of existing concrete, and it is difficult to move or adjust the position after fixing, resulting in poor efficiency of formwork installation work.

[0008] The present invention solves the above-mentioned conventional problems, eliminates the need for fixing work and fixing release work on the base surface of existing concrete, facilitates movement and position adjustment, and provides a bracing installation jig and a bracing installation method capable of efficiently performing formwork installation work.

Means for Solving the Problems

[0009] To solve the above problems, the bracing installation jig of the present invention is a bracing installation jig for installing bracing equipment for positioning a formwork in a dike construction, and is characterized by having a base portion placed on the formwork installation surface, an upright portion standing upright from the base portion, and an adjustment portion for adjusting the inclination of the base portion.

[0010] Also, the bracing installation method of the present invention is a bracing installation method using the above bracing installation jig, and is characterized by adjusting the inclination of the base portion by the adjustment portion, loading weights on the base portion to stabilize it on the formwork installation surface, and attaching bracing equipment to the upright portion.

[0011] Also preferably, the bracing equipment is marked for the dike wall and a guide member is attached, and the formwork is pressed against the guide member for positioning.

Effects of the Invention

[0012] The dowel installation jig of the present invention is a dowel installation jig for installing dowel materials for positioning a formwork in a dike construction. It has a base portion placed on a formwork installation surface, an upright portion standing upright from the base portion, and an adjustment portion for adjusting the inclination of the base portion. Since the base portion is not fixed to the formwork installation surface but only placed, by attaching a dowel material to the upright portion and adjusting the inclination of the base portion with the adjustment portion, the formwork can be positioned. There is no need for fixing work or fixing release work of the dowel material to the existing concrete base surface. Also, since it is not fixed to the base surface, it is easy to move and adjust the position. Further, after the formwork is installed, it can be removed and reused without the need for fixing release work to the base surface.

[0013] Moreover, the dowel installation method of the present invention is a dowel installation method using the above dowel installation jig. By adjusting the inclination of the base portion with the adjustment portion, weights can be loaded on the base portion to stabilize it on the formwork installation surface. Then, a dowel material can be attached to the upright portion to position the formwork.

[0014] Also, by marking the dike wall on the dowel material and attaching a guide member, and pressing the formwork against the guide member for positioning, the formwork can be easily installed at an accurate position with an accurate gradient.

[0015] Thus, according to the dowel installation jig and the dowel installation method of the present invention, there is no need for fixing work or fixing release work to the existing concrete base surface, movement and position adjustment are facilitated, and the formwork installation work can be efficiently performed.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0017] Next, with reference to FIGS. 1 to 3, a dowel installation jig and a dowel installation method according to an embodiment of the present invention will be described. The dowel installation jig and the dowel installation method according to the present embodiment are for installing dowel materials for positioning a formwork in dike construction.

[0018] As shown in FIG. 1, the dowel installation jig 10 serves as a pedestal for attaching the dowel material 40. And the formwork 20 is positioned according to the attached dowel material 40. The dowel installation jig 10 can be made durable and reused by being made of steel materials or the like. On the other hand, the dowel material 40 can be made of inexpensive crossties or vertical timbers.

[0019] The dowel material 40 is composed of column members 3 and 4, horizontal members 5 and 6, and a guide member 7. The column members 3 and 4 are respectively attached to the dowel installation jig 10, and the horizontal members 5 and 6 are attached to the column members 3 and 4 in the horizontal direction. And a guide member 7 is attached to the tip of the horizontal members 5 and 6.

[0020] The formwork 20 is a plate member having support members 21 attached at intervals. The formwork 20 is positioned such that the plate surface is along the guide member 7 of the dowel material 40. The positioned formwork 20 is fixed on the foundation by welding and connecting a separator 31 attached to the formwork 20 and an anchor 32 embedded in the foundation with a steel separator 30 at a plurality of locations.

[0021] Referring to FIG. 2, the butt joint installation jig 10 will be described in detail. The butt joint installation jig 10 is composed of a base portion 11, upright portions 12, 13, and adjustment portions 14, 14, 14. The base portion 11 is formed in a triangular shape in plan view with the three sides being steel materials 11a, 11b, 11c having an L-shaped cross section, and is placed on the formwork installation surface with the inner surface of the bent portion facing inward. From two vertices of the base portion 11, the upright portions 12, 13 stand upright upward. The upright portions 12, 13 are steel materials with an L-shaped cross section and are fixed by welding or the like with the inner surface of the bent portion facing outward.

[0022] Adjustment portions 14 are provided at the three vertices of the base portion 11 respectively. The adjustment portion 14 is for adjusting the inclination of the base portion 11, and as shown in FIG. 2(A), it is composed of a jack bolt consisting of a bolt 14a inserted into the screw hole of the base portion 11 and a nut 14b, and is configured to adjust the protruding amount of the bolt 14a. Thereby, the height of the three vertices of the base portion 11 can be adjusted to adjust the inclination of the base portion 11. Note that the adjustment portion 14 is not limited to the jack bolt, and other configurations may be used.

[0023] Referring to FIG. 3, the butt joint installation method using the butt joint installation jig 10 will be described in detail. First, the base portion 11 is placed on the formwork installation surface. At this time, it is not necessary to fix the base portion 11 to the existing concrete base surface. Next, the inclination of the base portion 11 is adjusted by the adjustment portion 14. Next, sandbags are loaded as weights 2 on the base portion 11 to stabilize it on the formwork installation surface. Next, the column members 3, 4 of the butt joint equipment 40 are attached to the upright portions 12, 13 of the butt joint installation jig 10. At this time, the column members 3, 4 are fitted into the inner surfaces of the bent portions of the upright portions 12, 13 and fastened and fixed at a plurality of locations with steel wires 8. Next, the horizontal members 5, 6 are attached to the column members 3, 4 in the horizontal direction with nails 9.

[0024] Next, mark the dimension point A of the weir wall on the horizontal members 5 and 6 of the bracing equipment 40. Then, attach the guide member 7 to the horizontal members 5 and 6 along the dimension point A with nails 9, and cut off the unnecessary B part. Finally, press and position the formwork 20 against the guide member 7, and at multiple locations, weld and connect the separator 31 attached to the formwork 20 and the anchor 32 embedded in the foundation with a steel separator 30 to fix it on the foundation.

[0025] Once the formwork 20 is fixed, remove the bracing installation jig 10 and the bracing equipment 40 to complete the formwork installation work. The removed bracing installation jig 10 can be made of steel materials or the like to give durability and can be reused. Also, since the bracing installation jig 10 is a pedestal for attaching the bracing equipment 40, by changing the bracing equipment 40 to be attached, it has the versatility to be used for formwork installation work in other locations. The separators 30, 31, and the anchor 32 are embedded as they are during concrete pouring.

[0026] Note that the adjustment of the inclination of the base portion 11 by the adjustment portion 14 and the soil loading work can be appropriately performed even after the attachment of the bracing equipment 40.

[0027] The bracing installation jig 10 according to the present embodiment is a bracing installation jig for installing a bracing equipment 40 for positioning the formwork 20 in a weir construction, and has a base portion 11 placed on the formwork installation surface, upright portions 12 and 13 standing upright from the base portion 11, and an adjustment portion 14 for adjusting the inclination of the base portion 11. Since the base portion 11 is not fixed to the formwork installation surface but only placed, by attaching the bracing equipment 40 to the upright portions 12 and 13 and adjusting the inclination of the base portion 11 by the adjustment portion 14, the formwork 20 can be positioned, and the fixing work and the fixing release work to the existing concrete foundation surface are unnecessary. Also, since it is not fixed to the foundation surface, it is easy to move and adjust the position. Also, after the formwork is installed, it can be removed without the fixing release work to the foundation surface and reused.

[0028] In addition, the stud installation method according to this embodiment is a stud installation method using the stud installation jig 10. The inclination of the base portion 11 can be adjusted by the adjustment portion 14, and the weight 2 can be loaded on the base portion 11 to stabilize it on the formwork installation surface. Then, the stud materials 40 can be attached to the upright portions 12 and 13 to position the formwork 20.

[0029] Further, by marking the weir wall on the stud materials 40 and attaching the guide member 7, and pressing and positioning the formwork 20 against the guide member 7, the formwork 20 can be easily installed at an accurate position with an accurate gradient.

[0030] As described above, according to the stud installation jig 10 and the stud installation method according to this embodiment, the fixing work and the fixing release work to the existing concrete base surface are not required, the movement and the position adjustment are facilitated, and the formwork installation work can be efficiently performed.

[0031] As described above, the stud installation jig and the stud installation method according to the embodiment of the present invention have been described. However, the present invention is not limited to the above-described embodiment, and various other modifications are possible.

[0032] For example, although the base portion 11 of the stud installation jig 10 according to this embodiment is triangular in plan view, it may be square, other polygonal, circular, or the like.

Explanation of Signs

[0033] 1 Weir 2 Weight (sandbag) 3 Column member 4 Column member 5 Horizontal member 6 Horizontal member 7 Guide member 8 Steel wire 9 Nail 10 Stud installation jig 11 Base portion 12 Upright portion 13 Upright portion 14 Adjustment portion (jack bolt) 20 Formwork 21 Support member 30 Separator 31 Separator 32 Anchor 40 Bracing equipment 50 River (upstream) 60 River (downstream) 70 Mountain

Claims

1. A buttressing installation jig for installing a buttressing device for positioning a formwork in a dike construction, comprising a base portion placed on a formwork installation surface, an upright portion standing upright from the base portion, and an adjustment portion for adjusting the inclination of the base portion. The base portion is formed in a triangular shape in plan view with a steel material having an L-shaped cross section as three sides. The buttressing device is composed of a column member, a horizontal member attached to the column member in the horizontal direction, and a guide member attached to the tip of the horizontal member. A buttressing installation jig, characterized in that the column member of the buttressing device is attached to the upright portion.

2. A buttressing installation method using the buttressing installation jig according to Claim 1, characterized in that the inclination of the base portion is adjusted by the adjustment portion, weights are loaded without fixing the base portion to stabilize it on the formwork installation surface, and the column member of the buttressing device is attached to the upright portion.

3. The buttressing installation method according to Claim 2, characterized in that the guide member is attached by marking the buttress wall on the horizontal member of the buttressing device, and the formwork is pressed against the guide member for positioning.

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