Anchor bolt positioning jig

Abstract

This invention provides a positioning jig for anchor bolts that enables quick and accurate positioning of anchor bolts in building foundations. [Solution] The anchor bolt positioning jig comprises a side plate 21 that is superimposed on and placed on the upper flange 8 of a formwork panel 7 that forms the side surface of the rising portion 2 of a building foundation 1, and a transverse plate 22 that is integrally molded with the side plate 21 with at least one end intersecting it, and through which anchor bolts embedded in the rising portion 2 between the left and right formwork panels 7, 7 are inserted and held. The side plate 21 is provided with pin holes 24 for positioning the anchor bolts relative to the formwork 6 by inserting positioning pins into one of a plurality of pin holes 10 pre-drilled at fixed positions in the upper flange 8.

Description

Technical Field

[0001] This invention relates to a positioning jig for anchor bolts used during the construction of foundations such as strip foundations and raft foundations for houses, warehouses, and other buildings.

Background Art

[0002] As devices or jigs for positioning anchor bolts embedded in the rising part (wall) of building foundations such as strip foundations and raft foundations, those described in Patent Documents 1 to 4 are known.

[0003] The bolt size, arrangement position, protruding length, number of arrangements, etc. of the above anchor bolts vary depending on, for example, conventional framing methods, prefabricated construction, two-by-four structures, and other construction methods or differences in the scale of houses, and also vary depending on the housing manufacturer. However, when embedding the anchor bolts at fixed positions in the concrete foundation to fix columns, bases, panels, etc. to the foundation, they are common in that the anchor bolts are positioned and arranged during foundation construction.

[0004] And the positioning jigs for the anchor bolts used in the construction of the above building foundations are all fixed in position with fixing members such as clips while aligning the attachment position of the jig from the position of the anchor bolt by calculating backward from the designed arrangement position of the anchor bolt with respect to the upper flange provided at the upper end of the formwork panel of the assembled foundation formwork.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 3

[0006] However, the above-mentioned devices and jigs are designed to adjust the position of each bolt in accordance with the individual anchor bolt positions in the design, and are suitable for precisely positioning each anchor bolt. However, they are unsuitable for mechanically positioning a large number of predetermined bolt positions accurately and quickly. This is inefficient because each anchor bolt needs to be adjusted individually, and adjustment errors are likely to occur. [Means for solving the problem]

[0007] The present invention, which solves the above problems, firstly comprises a side plate 21 that is superimposed on and placed on the upper flange 8 of a formwork panel 7 that forms the side surface of the rising portion 2 of a building foundation 1, and a transverse plate 22 that is integrally molded with the side plate 21 with at least one end intersecting it, and through which anchor bolts 3 embedded in the rising portion 2 between the left and right formwork panels 7, 7 are inserted and held, and the side plate 21 is characterized in that a pin hole 24 is drilled in the side plate 21 for positioning the anchor bolts 3 relative to the formwork 6 by inserting a positioning pin 16 by aligning it with one of a plurality of pin holes 10 pre-drilled at fixed positions in the upper flange 8.

[0008] Secondly, it is characterized by forming multiple transverse plates 22 between opposing side plates 21, and being used for flat wall sections where the entire structure is enclosed in a square or rectangular frame when viewed from above.

[0009] Thirdly, it is characterized by being used for L-shaped intersections, enclosed by a frame whose overall shape in plan view is L-shaped, conforming to the shape of the L-shaped intersection of the rising section 2, using opposing side plates 21 and at least two or more transverse plates 22.

[0010] Fourth, it is characterized in that it is used for T-shaped intersections, in which the overall shape in plan view is formed into a T-shaped frame that conforms to the shape of the T-shaped intersection of the rising portion 2, by using opposing side plates 21 and at least three or more transverse plates 22.

[0011] Fifth, it is characterized in that, in plan view, the overall shape is formed into a cross-shaped frame to conform to the shape of the cross-shaped intersection of the rising portion 2 by the opposing side plates 21 and at least four or more transverse plates 22, and is used for cross-shaped intersections.

[0012] Sixth, the invention is characterized by attaching side plates 21 to one or both ends of a single transverse plate 22, forming a T-shape, I-shape, or channel shape in plan view, and being used partially on the flat wall portion of the rising section 2.

[0013] Seventh, it is characterized by consisting of combinations of jigs for flat walls, L-shaped intersections, T-shaped intersections, cross-shaped intersections, and partial use types. [Effects of the Invention]

[0014] According to the jig of this invention, by selecting and adjusting the positioning pins in correspondence between the upper flange of the formwork and the multiple pin holes pre-drilled in the jig and the positions of the anchor bolts to be positioned, one or more anchor bolts can be positioned. Compared to setting each anchor bolt position by adjusting the position with clips or vises, this method has the advantage of reducing adjustment errors and allowing for quick and efficient positioning work.

[0015] Furthermore, by using a combination of jigs appropriate for each application, it is possible to position foundation anchor bolts under a variety of conditions, whether at the intersections of standard flat walls, T-shaped or cross-shaped rising sections (walls), or at the positions of individual anchor bolts. [Brief explanation of the drawing]

[0016] [Figure 1]It is a partially omitted plan view (hidden view) showing an example of the rising part of a building foundation and the position of anchor bolts. [Figure 2] It is a plan view showing the arrangement state of the jig for positioning anchor bolts with respect to the foundation formwork during the construction of the foundation corresponding to FIG. 1. [Figure 3] It is an enlarged plan view showing an example in which a T-shaped jig is arranged with respect to the formwork at the T-shaped intersection of the rising part of the foundation of the building body. [Figure 4] It is an enlarged cross-sectional view showing the assembled state of the formwork and the jig in the rising part of the building foundation. [Figure 5] It is a plan view showing nine types of frame jigs for the flat wall-shaped rising part used in the construction of the foundation for the building body. [Figure 6] It is a plan view showing four types of jigs for the L-shaped intersection part, T-shaped intersection part, and cross-shaped intersection part used in the construction of the foundation for the building body. [Figure 7] It is a plan view of four types of partial-use jigs used in a partial single location in the construction of the foundation for the building body. [Figure 8] It is a plan view showing five types of jigs for the flat wall-shaped foundation used in the construction of the balcony foundation. [Figure 9] It is a plan view showing six types of jigs for the intersection part of the rising part used in the construction of the balcony foundation. [Figure 10] It is a plan view of a partial-use type used in a partial single location in the construction of the balcony foundation and a side view showing the stepped bending state of each. [Figure 11] (A) to (C) are enlarged plan views samplely showing the detailed shapes of the jigs of each form shown in FIGS. 5 to FIG. 7. [Figure 12] (A) to (C) are enlarged plan views samplely showing the detailed shapes of the jigs of each form shown in FIGS. 8 to FIG. 10.

Embodiments for Carrying Out the Invention

[0017] The anchor bolt positioning jig of the present invention will be described in detail below with reference to the drawings. Figures 1 and 2 show a partially abbreviated plan view (layout view) of a wooden building foundation using the jig of the present invention, and the anchor bolt positioning jigs for each intersection, mainly L-shaped (corner), T-shaped, and cross-shaped intersections of the foundation rising section (wall section) used during the construction of the foundation.

[0018] Figures 3 and 4 are enlarged plan views of the T-shaped intersection and the rising section of the above-mentioned building foundation, respectively, while Figures 5 to 12 are plan views that show the types of jigs and some of the details of those jigs as examples.

[0019] The building foundation 1 shown in Figure 1 illustrates an example of a residential building constructed using a panel assembly type with a steel frame (for which anchor bolts are placed at the intersection of the rising section 2). However, the points of fixing the building to the foundation with anchor bolts and placing the anchor bolts in fixed positions are common to all types of buildings. Therefore, the building applications of this invention are not limited to conventional post-and-beam construction or panel construction methods, and it can be applied to either strip foundations or raft foundations.

[0020] In this example, foundation 1 consists of a main foundation 1A and a balcony foundation 1B. For example, the rising width (wall thickness) of the main foundation 1A is 170 mm, while the wall thickness of the balcony foundation 1B is set to 220 mm. Therefore, anchor bolt positioning jigs, which will be described later, are of different sizes to accommodate both.

[0021] In Figure 1, anchor bolt 3, shown as a large-diameter circle with a white center, is a large-diameter anchor bolt (e.g., 24 mm in diameter), while anchor bolt 4, shown as a small-diameter circle with a black center (filled in), is a small-diameter anchor bolt (e.g., 12 mm in diameter). In reality, bolts of other diameters are also used, and the protruding height and other dimensions vary depending on the step of the rising section 2, the material and size of the mounting member on the building material side, etc. However, illustrations showing the differences in each part are omitted here.

[0022] The arrangement and number of the large and small anchor bolts 3 and 4 described above will vary depending on the installation location and the configuration of the building components to which they are installed. These differences will be addressed by selecting and combining various types of jigs, as described later, to position the anchor bolts.

[0023] Figure 2 shows the state in which anchor bolt positioning jigs 18 and 19 of the appropriate type for each intersection and other necessary locations are placed on the upper surface of the upper flange 8 at the upper end of each left and right formwork panel 7 of the formwork 6 (see Figures 3 and 4) of the rising section 2, which is framed in accordance with the foundation 1 shown in Figure 1.

[0024] Incidentally, the upper flange 8 has numerous pin holes 10 drilled at predetermined intervals for positioning the jigs 18 and 19 relative to the formwork 6 by inserting positioning pins (knock pins) 16 in conjunction with the positioning pin holes 24 of the anchor bolt positioning jigs 18 and 19, which will be described later (see Figure 4).

[0025] Foundation 1 consists of a footing (base concrete) 9 that has been poured in advance on the ground side and a rising section 2. Within its cross-section, reinforcing bars 11 consisting of main reinforcement and stirrups, along with anchor bolts 3 and 4 whose upper ends protrude from the rising section 2, are embedded at predetermined locations.

[0026] Figure 3 is an enlarged plan view showing an example of how jigs 18 and 19 are used at the T-shaped intersection of the rising section 2 of the foundation 1. The jig shown in the figure is the T-shaped frame jig 18h described later (see Figure 6), which is used at the T-shaped intersection of the rising section and forms a frame made of T-shaped plates that overlap with the T-shape of the T-shaped intersection.

[0027] Figure 4 is an enlarged cross-sectional view showing the assembly of the formwork and jig 18 in the parts of the rising section 2 other than the intersection. The jig shown here is the foundation jig 18a for the flat wall section in Figure 5, but any of the jigs indicated by reference numerals 18a to 18h in the same figure may be used.

[0028] In this example, a large-diameter anchor bolt 3 is inserted through a large-diameter bolt hole 12 drilled at the center of the jig's transverse plate 22, and is positioned and supported by a lock nut 14. The bolt hole 12 is a bolt hole for inserting and supporting a small-diameter anchor bolt 4, but is not used in this example.

[0029] In both Figure 3 and Figure 4, the jigs 18h and 18a are positioned and set in a fixed position on the upper flange 8 using multiple positioning pins 16 in a planar (two-dimensional) manner. The overlapping state of the upper flange 8 and the jigs 18h, 18a, etc., is fixed and detachable by placing and clamping multiple U-shaped clips 17 at appropriate positions on the outer circumference, as shown in the figure.

[0030] Furthermore, the method for positioning and fixing (setting) jigs 18 and 19 to formwork 6 will be explained in detail after the structure of each jig 18 and 19 is described in detail below based on Figures 5 to 12.

[0031] Figures 5 to 7 show the overall plan view of various jigs 18 used for the rising section (rising wall) 2 of the main body foundation 1, according to their usage conditions, purpose, and application. Of these, Figure 5 exemplifies jigs 18a to 18i used for the flat wall-like portion (hereinafter referred to as the "flat wall portion") of the rising section (rising wall) 2 of the foundation 1, excluding the intersection.

[0032] In contrast, Figure 6 shows the intersection jigs 18j to 18m used in the parts where the rising section 2 intersects in an L-shape, T-shape, or cross shape in a plan view, and Figure 7 shows the plan view shapes of the partial-use jigs 18n to 18g used partially in a part of the flat wall section.

[0033] Figures 8 to 10 show examples of jigs 19 for the rising section of the balcony foundation 1B, which is provided on a part of the outside of the main foundation 1A. In this case as well, similar to the main foundation 1A of the building, the plan view shapes of the flat wall jigs 19a to 19e, the L-shaped (angle-shaped) and cross-shaped jigs 19j to 19m in plan view, and the partially used jigs 19p to 19r for use on the flat wall section are shown respectively.

[0034] The jig 18 for the main body foundation 1A, shown in Figures 5 to 7 and 11, consists of a side plate 21 that is placed on top of the upper surface along the upper flange 8 of the formwork panel 7, and a transverse plate 22 that is connected perpendicularly to one or both ends of the side plate 21 and is provided in a direction that crosses between the formwork panels 7.

[0035] The transverse plates 22 are provided on both ends in the wall direction relative to a pair of parallel, opposing side plates 21, forming a square or rectangular frame in plan view, and constitute jigs 18a to 18i used for the flat wall section of the foundation 1 as shown in Figure 5. Furthermore, the transverse plates 22 are also provided in the middle of the space between the side plates 21 so as to partition the space between the side plates 21.

[0036] The installation intervals of the transverse plates 22 are, for example, the standard interval in jig 18d, and are available in different dimensions or combinations thereof, such as 1.5 to 2.5 times, 1 / 2 times, 1 / 4 times, and other multiples. By combining and overlapping these jigs 18a to 18i, they are available to accommodate various lengths of the rising portion 2 of the flat wall section.

[0037] Furthermore, an auxiliary plate 23, which is attached in a cross shape as shown in jig 18f in Figure 5, can be provided in the area surrounded by the side plate 21 and the transverse plate 22, and bolt holes 12, 13, etc., can be provided therein. This auxiliary plate 23 is not limited to a cross shape; various shapes such as Y-shaped, T-shaped, and I-shaped can be selected, as shown in jigs 18j, 18h, and 18l in Figure 6.

[0038] In addition, in the drawings and descriptions of this embodiment, the use of the same reference numeral indicates the same part name, the same function, or a common or similar functional part, and redundant explanations may be omitted. The same applies to the following descriptions.

[0039] Figure 6 shows jigs 18j to 18m for sections where the rising section 2 intersects in an L-shape, T-shape, or cross shape in a plan view, as previously described. Of these, jigs 18h and 18l are both for T-shaped intersections, but the only difference is the shape of the auxiliary plate 23, corresponding to the different types and arrangements of anchor bolts. In addition, in each jig, the side plate 21 and the transverse plate 22 are enclosed in a cross-frame shape corresponding to the intersection configuration of the rising section 2.

[0040] The jigs 18n to 18p in Figure 7 are not a frame-like structure enclosing the interior in plan view, but rather form a channel or T-shape by attaching relatively short side plates 21 to both ends or one end of a transverse plate 22. They are primarily used for positioning specific anchor bolts in the rising sections of flat walls and can be used alone or in combination with the flat wall jigs shown in Figure 5.

[0041] The jig 18q is a fixture that is installed between side plates 21, transverse plates 22, auxiliary plates 23, or upper flanges 8, etc., that have spacing other than the standard spacing, and is used in cases of irregular mounting positions or when the mounting part on the building side has a special shape.

[0042] Next, among the jigs 18 for the main body foundation 1A shown in Figures 5 to 7, the jig 18a for flat walls, the jig 18j for intersections, and the jig 18n for partial use are shown in enlarged view in Figures 11(A) to (C) as specific examples.

[0043] The side plates 21 of each jig 18a, 18j, and 18n have numerous pin holes 24 drilled at a predetermined pitch (the same pitch as the pin holes 10 on the upper flange 8) that correspond to the positioning pin holes 10 on the formwork 6 side shown in Figure 3. To align the jig 18 with the formwork 6, one of the multiple pin holes 10 on the upper flange side is selected to match the predetermined positions of the bolt holes 12 and 13 for the anchor bolts 3 and 4 of each jig, and the positioning pins 16 are inserted into the pin holes 24 on the jig 18 side to position it. The anchor bolts 3 and 4 are then inserted through the bolt holes 12 and 13 of the positioned jig 18 to set it in place.

[0044] In this example, numerous marker sections 26, each consisting of a V-shaped notch, are engraved at predetermined positions on the outer circumference of each jig 18. By aligning these markers with the corresponding marker sections (not shown) on the formwork 6 side, the two can be quickly and accurately aligned.

[0045] Figures 8 to 10 show specific examples of all the jigs 19 used in the balcony foundation 1B in this embodiment, with Figure 5 showing the plan view shapes of jigs 19a to 19e used for the flat wall-like, straight rising section in plan view. The jigs for the balcony foundation 1B are composed of side plates 21 and cross plates 22, similar to those for the main foundation in Figure 5, but they are also similar in that they are combinations of basic shapes and various dimensions, except that the wall thickness of the foundation 1B is wider (220 mm wide) than that of the main foundation 1A. However, in this example, anchor bolts for attaching the building are not required in the flat wall section of the balcony foundation 1B, so anchor bolt holes are not provided.

[0046] Figure 9 similarly shows the planar shapes of jigs 19j to 19m used for the L-shaped and cross-shaped intersections of the rising section 2 of the balcony foundation 1B, and their shapes are designed to fit the intersection shape at each assembled position.

[0047] Of these, 19 hours are for jigs. 1 ~19h 4 While this is for T-shaped or cross-shaped intersections, the spacing of the side plates 21, 21 corresponding to the wall thickness differs at some protruding ends. This is to accommodate the points where the main foundation 1A and the balcony foundation 1B, which have different wall thicknesses, intersect, and the differences in the dimensions and placement of the anchor bolts required at the intersection. These variations are determined according to the design of the house itself.

[0048] Furthermore, the fact that the marker portion 26 in the jigs shown in Figures 8 to 10 and Figure 12 is displaced to the left or right of the wall center position of the rising portion 2 is also in order to make the wall center correspond to the position of the main body foundation 1A.

[0049] Figure 12 is a plan view of representative jigs 19a, 19j, and 19p from the jigs 19a to 19r shown in Figures 8 to 10, with some examples where anchor bolts are not required and therefore bolt holes are not provided in the transverse plate 22 (for example, jigs 19a to 19e and 19p).

[0050] The jigs 18 and 19, configured as described above, are both made of thin, rigid plates such as steel plates, synthetic resin plates, or FRP plates, and are set by placing them on top of the upper flange 8 of the foundation formwork 6 assembled at the construction site as previously described.

[0051] At this time, as shown in Figure 2, jigs corresponding to the respective intersection structures are selected and placed at each intersection of the main foundation 1A and the balcony foundation 1B to complete the predetermined alignment, and positioning pins 16 are inserted into the pin holes 10 on the formwork 6 side and the pin holes 24 on the jigs 18 and 19 sides to fix them in place.

[0052] Multiple positioning pins 16 need to be inserted for reliable positioning, and if necessary for securing the overlap, U-shaped clips 17 or the like are used to press the jigs 18 and 19 against the formwork 6 from both the top and bottom to create a tight fit.

[0053] Furthermore, for the flat wall section, one of the jigs shown in Figures 5, 7, 8, and 10 is used individually or in combination, depending on the required size and placement conditions of the anchor bolts 3 and 4. When used in combination, part or all of the jigs may be superimposed on other jigs. In this case, the positioning pins 16 are inserted into the pin holes 24 of the superimposed jigs and the pin holes 10 on the formwork 6 side to position them together.

[0054] Furthermore, in addition to the jigs shown in Figures 6 and 9 for intersections, other jigs may be used in combination with the jigs shown in Figures 6 and 9. In this case as well, some or all of the jigs are stacked on top of each other and set together, similar to the above.

[0055] As shown in Figure 4, concrete is poured into the formwork 6 with the anchor bolts in place. After the foundation 1 is constructed, the jigs and formwork are dismantled and removed, completing the work. [Explanation of Symbols]

[0056] 1 Basics 1A Base for main body 1B Balcony foundation 2. Riser section 3,4 Anchor bolts 6 formwork 7 Formwork Panel 10 pin holes 12, 14 bolt holes 16 positioning pins 18 (18a~18q) Jig 19(19a~19e,19j,19h1~19h4,19m,19p,19r) Jig 21 Side plate 22 Crossing Plate 23 Auxiliary plate 24 pin holes

Claims

1. An anchor bolt positioning jig comprising: a side plate (21) that is superimposed on and placed on the upper flange (8) of a formwork panel (7) that forms the side surface of the rising portion (2) of a building foundation (1); and a transverse plate (22) that is integrally molded with the side plate (21) with at least one end intersecting it, and through which anchor bolts (3) embedded in the rising portion (2) between the left and right formwork panels (7), (7) are inserted and held; the side plate (21) has a pin hole (24) drilled in it for positioning the anchor bolts (3) relative to the formwork (6) by inserting a positioning pin (16) into one of a plurality of pin holes (10) pre-drilled at a fixed position in the upper flange (8).

2. The anchor bolt positioning jig according to claim 1, which is used for a flat wall section formed by forming a plurality of transverse plates (22) between opposing side plates (21) and the entire structure is enclosed in a square or rectangular frame when viewed from above.

3. The anchor bolt positioning jig according to claim 1, which is used for an L-shaped intersection enclosed by a frame whose overall shape in plan view is L-shaped, conforming to the shape of the L-shaped intersection of the rising portion (2), by means of opposing side plates (21) and at least two or more transverse plates (22).

4. The anchor bolt positioning jig according to claim 1, which is used for a T-shaped intersection, wherein the overall shape in plan view is formed into a T-shaped frame that conforms to the shape of the T-shaped intersection of the rising portion (2), by means of opposing side plates (21) and at least three or more transverse plates (22).

5. The anchor bolt positioning jig according to claim 1, which is used for a cross-shaped intersection, wherein the overall shape in plan view is formed into a cross-shaped frame to conform to the shape of the cross-shaped intersection of the rising portion (2) by forming an opposing side plate (21) and at least four or more transverse plates (22).

6. An anchor bolt positioning jig according to claim 1, wherein side plates (21) are attached to one or both ends of a single transverse plate (22), forming a T-shape, I-shape, or channel shape in plan view, and is used partially on the flat wall portion of the rising portion (2).

7. A positioning jig for anchor bolts according to claims 2 to 6, comprising a combination of jigs for flat walls, L-shaped intersections, T-shaped intersections, cross-shaped intersections, and partial use types.

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