JP4496500B2 - Holding member - Google Patents

Description

  In the present invention, when anchoring a standing object on the ground via an anchor bolt fixed on the ground side, the anchor bolt is held upright when the foundation concrete for fixing the anchor bolt to the ground side is created. It is related with the holding member.

  Conventionally, when props and poles are erected and fixed on the ground, first, excavate the ground on which the props are to be set up, assemble a formwork to build foundation concrete in this excavation part, and anchor bolts vertically in this formwork The concrete is poured into the concrete in a state of being held in the shape of the foundation, and the anchor bolts are fixed.

  Next, after the concrete has hardened, the mold is removed, and the gap between the inner surface side of the excavation part and the foundation concrete is filled with earth or sand or concrete. Then, it was performed by the procedure of standing up and fixing the pillars via the anchor bolts fixed by the concrete in a state of protruding from the upper surface of the foundation concrete.

  However, in the conventional method, when the column is erected and fixed via the anchor bolt, it is necessary to adjust the column inclination angle and fix it vertically. It was necessary to make a dome for tilt adjustment with which the mounting plate of the abutment abuts. In addition, in order to hold a plurality of anchor bolts vertically when building foundation concrete, it is necessary to assemble a structure for temporarily holding the anchor bolts with a reinforcing bar or the like in the concrete formwork. The assembly work required a lot of labor and time. In particular, assembly work in a narrow formwork required a lot of labor and skill.

  Therefore, in order to reduce the labor and time required for assembling the above-mentioned basic concrete, particularly the assembling of the formwork, and further simplifying the assembling work of the temporary holding structure of the anchor bolt, as shown in FIG. A construction method using the precast concrete block 1 as a formwork for foundation concrete placement has been proposed (see Patent Document 1).

According to this construction method, the plurality of anchor bolts 2 are erected and held on the mounting portion 3, and are erected and held by temporarily fixing the mounting portion 3 in the precast concrete block 1 via a metal fitting or a fixture. It was like that.
JP 2000-234339 A

  However, even in the above-described construction method, after the foundation concrete X is created, the inconvenience of having to make the dome 6 for adjusting the inclination with which the mounting plate 5 at the lower end of the support column 4 abuts on the foundation concrete X is eliminated. There wasn't. In particular, after the dome 6 is formed on the foundation concrete X, the support 4 cannot be fixed immediately, and the dome 6 must be cured and hardened, which requires an extra work period. there were. In this construction method, the mounting portion 3 for standing and holding a plurality of anchor bolts 2 must be temporarily fixed in the block 1 via metal fittings and fixtures, and the anchor bolt 2 is held upright. Was not easy.

  In the present invention, after the foundation concrete is formed, it is not necessary to make a dome for adjusting the inclination on which the mounting plate at the lower end of the support comes into contact with the foundation concrete, and the ground is provided via an anchor bolt that fixes the standing object to the ground side. It is an object of the present invention to provide a holding member that can easily and surely stand and hold an anchor bolt when building foundation concrete for fixing the anchor bolt to the ground side when standing and fixing to the ground. It is.

In order to achieve the above object, according to the first aspect of the present invention, there is provided a foundation concrete for fixing the anchor bolt to the ground side when the standing object is vertically fixed to the ground via the anchor bolt fixed to the ground side. A holding member for standingly holding the anchor bolt when forming,
It consists of a plate that is attached so as to straddle the upper opening of the mold consisting of a precast concrete block that forms the foundation concrete,
The plate has a holding hole for standing and holding the anchor bolt, and a dome for tilt adjustment is formed in the center.
The gist of the holding member is that the foundation concrete is integrated with the mold and the anchor bolt by placing concrete in the mold .

  The gist of the invention according to claim 2 is that the substantially hook-shaped anchor member is attached to the lower end side of the anchor bolt held in the holding hole.

  In the holding member of the present invention, since the dome for tilt adjustment is formed in the center of the plate, the dome for tilt adjustment in which the mounting plate at the lower end of the support comes into contact with the foundation concrete after the foundation concrete is formed. Since it is not necessary to construct a dome, the work on site can be simplified, and the construction period can be shortened because there is no need to construct a dome.

  Moreover, the holding member of the present invention is arranged so as to straddle the upper opening of the formwork that forms the foundation concrete, and the anchor bolts standing and held in the holding holes are held vertically on the formwork. There is no need to set up and hold the anchor bolts, and the foundation concrete can be created immediately.

  Hereinafter, the holding member of the present invention will be described in more detail with reference to the accompanying drawings. In the case where the holding member of the present invention is erected and fixed to the ground via an anchor bolt that fixes the standing object to the ground side, the anchor bolt is used when forming the foundation concrete that fixes the anchor bolt to the ground side. It stands upright and holds. In addition, in the category of standing objects standing and fixed via anchor bolts standing and held by this holding member, anchor bolts such as pillars of houses and factories in addition to pillars and poles such as road signs and street lights Anything that can be fixed upright via is included. In the form shown in the drawings, the road sign post 20 is exemplified as a standing object.

  As shown in FIGS. 1-5, the holding member 15 consists of a plate arrange | positioned so that the upper opening of the formwork 11 which produces the foundation concrete X which fixes the anchor bolt 16 may be straddled. The illustrated holding member 15 is made of an iron square plate. The material of the holding member 15 is not particularly limited, in addition to metals such as iron, aluminum, and stainless steel, reinforced plastics such as ABS, and FRP. It is.

  As shown in FIGS. 1 to 3, the holding member 15 is formed with a plurality of holding holes 15 a for standingly holding the anchor bolts 16 at intervals. In the illustrated example, four holding holes 15a are formed in two rows at intervals in the length direction of the rectangular plate. As shown in FIG. 3, the anchor bolt 16 is inserted so as to protrude from the front and back through the holding hole 15a, and the height of the anchor bolt 16 is adjusted so that the upper end of the anchor bolt 16 is at a predetermined height position. The nuts 17 are fastened and fixed on the front and back sides. Further, as shown in FIG. 3, a substantially hook-shaped anchor member 18 for fixing the anchor bolt 16 more stably is attached to the lower end side of the anchor bolt 16 that is erected and held on the holding member 15. It has become. There are no restrictions on the shape and length of the anchor bolt 16 or the installation structure thereof, and there is no problem even if the anchor bolt is arranged in the conventional manner.

  As shown in FIGS. 1 to 3, a tilt adjustment dome 15 b is formed at the center of the holding member 15 to vertically support and fix the support column 20 with respect to the ground. The dome 15b can be formed by extruding with a press or the like at the same time as the holding member 15 is molded. In addition, the dome 15b is formed by joining a dome-shaped member on the holding member 15 by a joining means such as welding or adhesion. You can also.

  For example, as shown in FIG. 4, the above-described holding member 15 is arranged so as to straddle the upper opening (filling port for placing concrete) of the mold 11 for forming the basic concrete, so that the anchor bolt 16 is attached to the mold. The frame 11 is vertically set and held. In addition, the formwork for arranging the holding member in the present invention is not particularly limited. Even if it is a concrete formwork assembled in the excavation part at a conventional site, a formwork for foundation concrete placement as shown in FIG. It may be a precast concrete block adopted as In the example shown in FIG. 1 and FIGS. 4 to 7, as the mold 11 in which the holding member 15 is disposed so as to straddle the upper opening, the bottom frame 12, the upper frame 14, the bottom frame 12, and the upper frame 14 are interposed. What consists of at least 1 intermediate | middle frame 13 distribute | arranged to was used. Hereinafter, an example in which the holding member 15 of the present invention is applied to the mold 11 shown in FIGS. 1 and 4 to 7 will be described.

  1, 4, and 7 includes a bottom frame 12, an intermediate frame 13, and an upper frame 14, and the bottom frame 12, the intermediate frame 13, and the upper frame 14 have a planned place where the column 20 is erected. It is constructed by stacking in order in the excavation part G formed by excavation.

  The bottom frame 12 is a rectangular frame that forms the bottom of the mold 11, and a continuous linear protrusion 12 a is provided on the inner surface of each side that forms the frame. In addition, an anchor portion 12b is formed on the outer surface of the bottom of the bottom frame 12 so as to spread outward. As shown in FIG.2 and FIG.3, the earth and sand dug at the time of excavation are backfilled on the anchor part 12b, and the upper surface is further solidified with concrete. For this reason, the formwork 11 is restrained by the weight of the earth and sand buried on the anchor part 12b of the bottom part frame 12, and is stabilized.

  The intermediate frame 13 is a quadrangular frame that forms an intermediate portion of the mold 11, and may be composed of a plurality of frames depending on the height (depth) of the mold 11. is there. Further, continuous linear ridges 13 a are provided on the inner side surfaces of the respective sides constituting the intermediate frame 13 in the same manner as the bottom frame 12.

  The upper frame 14 is a rectangular frame that constitutes the upper part of the mold 11, and the linear ridges 14 a that are continuous like the bottom frame 12 are formed on the inner surface of each side that constitutes the upper frame 14. Is provided. Further, as shown in FIGS. 1 and 2, a recess 14b is provided at the upper opening edge of the upper frame 14, and a holding member for vertically holding the above-described anchor bolt 16 in the recess 14b. 15 ends are accommodated.

  In the illustrated example, each side of the bottom frame 12, the intermediate frame 13, and the top frame 14 is provided as a convex portion or a concave portion provided on each inner surface of the bottom frame, the intermediate frame, and the top frame constituting the mold. Although the continuous linear protrusions 12a, 13a, and 14a provided on the inner side surface of the inner frame are illustrated, the present invention is not limited thereto, and for example, provided on the inner side surface of each side of the bottom frame 12, the intermediate frame 13, and the upper frame 14. It may be a continuous groove.

  Further, a plurality of ridges and grooves may be alternately provided on the inner surface of each side of the bottom frame, the intermediate frame, and the upper frame constituting the mold. Furthermore, a plurality of protrusions or holes may be provided at predetermined intervals on the inner surface of each of the bottom frame, the intermediate frame, and the upper frame constituting the mold, and a plurality of protrusions and holes may be provided at predetermined intervals on the inner surface of each frame. May be provided alternately. Furthermore, continuous ridges or grooves can be provided on the inner surface of each side of the bottom frame, the intermediate frame, and the upper frame, and a large number of protrusions or holes can also be provided at predetermined intervals on the inner surface of each frame. In this way, the shape and the arrangement of the convex portions and / or the concave portions on each inner surface of the bottom frame, the intermediate frame, and the upper frame constituting the mold are completely arbitrary. What is necessary is just to determine suitably, considering the magnitude | size and shape of this, the magnitude | size of the foundation concrete to construct.

  The bottom frame 12, the intermediate frame 13, and the upper frame 14 constituting the mold 11 shown in FIGS. 1 and 4 to 7 can be manufactured using concrete blocks, plastic, FRP, or the like. In the illustrated example, a precast concrete block manufactured in advance at a factory is used for each of the bottom frame 12, the intermediate frame 13, and the upper frame 14 constituting the mold 11. In the case of the illustrated example, precast concrete blocks manufactured in advance at the factory are adopted for the bottom frame 12, the intermediate frame 13, and the upper frame 14 constituting the mold 11, so that they are transported and installed on the construction site. Has the advantage of being inexpensive and homogeneous.

  Next, the process of creating the foundation concrete that fixes the anchor bolt to the ground side using the above-described formwork will be described. First, as shown in FIG. 4, the excavation part G is formed by excavating a planned site where the support column 20 is set up.

  Next, as shown in FIGS. 4 and 5, the mold 11 is assembled in the excavation part G. In assembling the mold 11, the bottom frame 12 is arranged in the excavation part G, and then one to a plurality of intermediate frames 13 on the bottom frame 12 according to the height (depth) of the mold 11. The upper frame 14 is further stacked on the intermediate frame 13.

  As shown in FIGS. 4 and 5, when the mold frame 11 is assembled by stacking the bottom frame 12, the intermediate frame 13, and the upper frame 14 in this order, the bottom frame 12, the intermediate frame 13, and the On the inner side surface of the upper frame 14, recessed portions are formed by the protrusions 12 a, 13 a, and 14 a provided on the inner side surfaces of the frames.

  Next, the end of the holding member 15 is accommodated in the recess 14 b provided at the upper opening edge of the upper frame 14. Prior to housing the holding member 15 in the recess 14b provided on the upper opening edge of the upper frame 14, as shown in FIGS. The anchor bolts 16 are respectively inserted into the plurality of holding holes 15a so as to protrude from the front and back of the holding member 15, and the height of the anchor bolt 16 is adjusted so that the upper end of the anchor bolt 16 is at a predetermined height position. Tighten and fix with the nut 17 on both sides. Further, a substantially hook-shaped anchor member 18 for stably fixing the anchor bolt 16 is attached to the lower end side of the anchor bolt 16 held by the holding member 15. Then, the both ends of the holding member 15 are accommodated in the recesses 14b provided on the upper surface opening edge of the upper frame 14, whereby the anchor bolt 16 is vertically held at a predetermined position in the mold 11 and held. Will be.

  Next, as shown in FIGS. 4 and 6, earth and sand excavated during excavation is backfilled in the gap between the inner surface of the excavation part G and the mold 11, and the upper surface thereof is solidified with concrete. Thereby, the earth and sand dug at the time of excavation are piled up on the anchor part 12b of the bottom frame 12, and the bottom frame 12 of the mold 11 is restrained and stabilized by the weight of the earth and sand refilled.

  Next, as shown in FIGS. 5 and 6, concrete X is placed in the mold 11 assembled in the excavation part G. The placed concrete flows into the indented portion formed on the inner surface of the above-described mold 11 and hardens. As a result, the foundation concrete X in the placed mold 11 becomes an integral object. Thus, the anchor bolt 16 is firmly fixed.

  Thereafter, as shown in FIG. 7, the column 20 is erected and fixed via the anchor bolt 16 fixed to the ground side by the foundation concrete X. A mounting plate 21 having a plurality of mounting holes 21 a is attached to the lower end of the column 20. The anchor bolt 16 is inserted into each mounting hole 21a of the mounting plate 21, and the anchor bolt 16 is fastened and fixed with a nut 21b.

  At this time, a dome 15b for tilt adjustment is formed in the center of the holding member 15, and the mounting plate 21 of the support column 20 is in contact with and supported by one point of the dome 15b. An operator adjusts the inclination angle of the support column 20 supported by a point on the dome 15b, vertically stands the support column 20 and, in this state, fastens and fixes the anchor bolt 16 with the nut 21b.

  The holding member of the present invention is not limited to the above-described example. For example, the holding member has an excellent strength, and is composed of a lightweight and easy-to-handle FRP. It can be changed freely within the specified range. Moreover, the holding member of the present invention can be used for any application that can be fixed upright via an anchor bolt, such as a pillar of a house or a factory, in addition to a column or pole such as a road sign or a streetlight.

It is a disassembled perspective view which shows the holding member of this invention, and the formwork which arrange | positions this holding member. It is the top view and side view which show the holding member of this invention. It is a front view of a holding member similarly. It is sectional drawing which shows the state which has arrange | positioned the holding member of this invention on the formwork assembled in the excavation part. It is an enlarged sectional view similarly. It is sectional drawing which shows the state which pours concrete into a formwork. It is sectional drawing which shows the state which fixed and supported the support | pillar via the anchor bolt firmly hold | maintained with the foundation concrete. It is sectional drawing which shows the attaching part which standingly holds an anchor bolt, when building foundation concrete using a precast concrete block as a formwork.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Formwork 12 ... Bottom frame 12a ... Projection 12b ... Anchor part 13 ... Intermediate frame 13a ... Projection 14 ... Upper frame 14a ... Projection 14b .... Recess 15 ... Holding member 15a ... Holding hole 15b ... Dome for tilt adjustment 16 ... Anchor bolt G ... Excavation part X ... Foundation concrete

Claims (2)

In the case of standing and fixing to the ground via an anchor bolt that fixes the standing object to the ground side, a holding member that stands and holds the anchor bolt when creating the foundation concrete that fixes the anchor bolt to the ground side There,
It consists of a plate that is attached so as to straddle the upper opening of the mold consisting of a precast concrete block that forms the foundation concrete,
The plate has a holding hole for standing and holding the anchor bolt, and a dome for tilt adjustment is formed in the center.
The holding member is integrated with the foundation concrete together with the mold and the anchor bolt by placing concrete in the mold .   The holding member according to claim 1, wherein a substantially hook-shaped anchor member is attached to a lower end side of the anchor bolt standingly held in the holding hole.

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