WO2017056602A1 - Method for constructing concrete foundation top end, and top end form - Google Patents

Method for constructing concrete foundation top end, and top end form Download PDF

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Publication number
WO2017056602A1
WO2017056602A1 PCT/JP2016/069260 JP2016069260W WO2017056602A1 WO 2017056602 A1 WO2017056602 A1 WO 2017056602A1 JP 2016069260 W JP2016069260 W JP 2016069260W WO 2017056602 A1 WO2017056602 A1 WO 2017056602A1
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WO
WIPO (PCT)
Prior art keywords
top end
concrete
formwork
concrete foundation
anchor bolt
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PCT/JP2016/069260
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French (fr)
Japanese (ja)
Inventor
耕平 藤田
上林　正
欣也 鈴木
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大和ハウス工業株式会社
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Publication of WO2017056602A1 publication Critical patent/WO2017056602A1/en

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/01—Flat foundations
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/10—Forming or shuttering elements for general use with additional peculiarities such as surface shaping, insulating or heating, permeability to water or air

Definitions

  • the present invention relates to a construction method for constructing a concrete foundation of a building.
  • Patent Document 1 Conventional concrete foundations for buildings are known, for example, as described in JP-A-1-158118 (Patent Document 1) and JP-A-2013-159922 (Patent Document 2).
  • the concrete foundations described in Patent Literature 1 and Patent Literature 2 are cloth foundations having a reverse T-shaped cross section and extending in the horizontal direction along the ground. Both side surfaces of the fabric foundation are formed by a pair of molds that face each other and rise in parallel. Further, in Patent Document 1 and Patent Document 2, the fabric foundation is connected to soil concrete covering the ground.
  • the pillars and wall materials of the building frame will be installed at the top of the concrete foundation. For this reason, the top of the concrete foundation needs to be formed horizontally. In the past, a pair of molds were marked, and the top edge was leveled with a scissors before the ready-mixed concrete hardened. However, this work requires man-hours and skill, and there is room for improvement in terms of cost and construction period. In addition, in the rainy season and heavy rain zone, it is difficult to perform the top leveling and subsequent curing.
  • the present invention provides a construction method capable of finishing the top of a concrete foundation into a horizontal plane at a correct height without imposing an excessive burden on man-hours while using ordinary concrete. With the goal.
  • the method of constructing the top of a concrete foundation is a method of constructing the top of a concrete foundation comprising a concrete top and a plurality of anchor bolts projecting upward from the top.
  • the top of the concrete foundation can be horizontally formed at the correct height by mounting and fixing the top end formwork horizontally at the correct height.
  • work such as leveling the top of a large building is eliminated, and the cost advantage increases.
  • the method for fixing the top end formwork is not particularly limited.
  • the anchor bolt is screwed with the lower nut and the upper nut, and the top end formwork is attached and fixed to the anchor bolt. Is sandwiched between the lower nut and the upper nut.
  • the top end formwork can be easily attached and fixed or removed using a combination of anchor bolts and nuts.
  • the top end formwork may be attached and fixed to the anchor bolt using an attachment other than the nut.
  • the shape and size of the base side of the concrete foundation are not particularly limited, and the distance and the positional relationship between the base side and the top end formwork are not particularly limited, but the top end formwork may be disposed in the vicinity of the side face of the base part.
  • the base side has a side surface depending from the side edge of the upper surface
  • the ceiling end formwork further has a hanging portion provided so as to hang from the side edge of the plane portion. In the process of attaching and fixing the formwork to the anchor bolt, the hanging portion comes into contact with the side surface on the base side.
  • the top end of the foundation and the side surface of the foundation can be continuously viewed with good appearance.
  • the hanging part of the top end formwork may be provided only on one side of the flat part and may be in contact with one side surface of the base part, or may be provided on both sides of the flat part and in contact with both side surfaces of the base part. May be.
  • the top end formwork further has an inclined part at the boundary between the suspended part and the flat part, and the top end concrete is filled between the top end formwork and the upper surface on the base side.
  • the inclined portion forms a chamfer on the side edge of the concrete top.
  • the top end formwork does not have an inclined portion and may be formed by intersecting the side surface of the concrete foundation and the top end at 90 °.
  • the top end formwork further includes a rising portion that rises from the side edge of the plane part, and in the step of filling the top end concrete between the top end formwork and the upper surface on the root side.
  • the rising part forms a stepped surface rising from the top.
  • the step surface becomes, for example, an edge of soil concrete.
  • the top end formwork of the present invention has an upper surface and a lower surface, and the lower surface has a flat surface portion formed flat, a plurality of anchor bolt through holes formed in the flat surface portion, and a pressing surface continuous from the lower surface,
  • the anchor bolt through-hole is provided with a concrete foundation anchor bolt so that the angle from the lower surface of the plane portion to the pressing surface is a predetermined angle included in the range of more than 90 ° and less than 270 °.
  • the lower surface of the flat part forms the top edge of the concrete foundation, and the pressing surface of the inclined part presses the concrete.
  • the concrete foundation top end can be horizontally formed at the correct height by installing the top end formwork horizontally at the correct height.
  • the upper surface of the flat portion is provided with a seat portion to be fixed to the anchor bolt, for example, a seat portion that is stably supported by a nut, and a plurality of ribs for increasing the rigidity of the top end formwork.
  • the side surface portion may be formed to rise from the flat surface portion or may be formed to hang down.
  • the predetermined angle refers to an angle from the concrete pressing surface (lower surface) of the flat surface portion to the concrete pressing surface (pressing surface) of the side surface portion.
  • the concrete after deframement protrudes outward at a right angle or an acute angle of 90 ° or less, which may cause chipping or cracking at the protruding portion.
  • the angle between the continuous pressing surfaces is 270 ° or more, a groove that is perpendicular or 90 ° or less, such as a V-shaped groove, is formed in the concrete after the frame is removed, and the concrete starts from the groove bottom. This is not preferable because it causes cracks.
  • the planar portion is a rectangular plate, and an upward rib extending in the short direction is formed at the longitudinal end of the planar portion, and further provided with a clip for sandwiching the overlapping ribs.
  • the side portion is a plate extending at the same longitudinal length along the rectangular flat portion, and the rib of the flat portion extends from the longitudinal end of the flat portion to the side portion. Are formed up to the longitudinal ends. According to this embodiment, the rigidity of the connection part of a plane part and a side part becomes large, and the undesired deformation
  • the top end of the concrete foundation can be finished in a horizontal plane with a correct height without imposing an excessive burden on the man-hours while using normal concrete.
  • the construction efficiency in the rainy season and heavy rain zone is significantly improved.
  • FIG.7 and FIG.8 It is a perspective view which shows the state which attached and fixed the top end formwork so as to oppose the base side upper surface of a concrete foundation. It is a perspective view which shows the state with which top end concrete was filled between the base side upper surface of a concrete foundation, and the top end formwork. It is a cross-sectional view which shows the state which removed the top end formwork after hardening of the top end concrete. It is a top view which shows the top end formwork shown in FIG.7 and FIG.8. It is a cross-sectional view which shows the top end formwork shown in FIG. 7 and FIG. It is a side view which shows the top end formwork shown in FIG.7 and FIG.8.
  • FIG. 1 to 5 are cross-sectional views showing the construction method of the top 10 of the concrete foundation according to the present invention in time series.
  • the base side 11 except the top end of the entire concrete foundation is constructed.
  • the base side 11 is the majority of the concrete foundation.
  • the concrete foundation 10 has an inverted T-shaped cross section and includes a slab 11s and a rising portion 11w.
  • the rising portions 11w are formed of a pair of molds 31 that face each other and extend in parallel in the horizontal direction.
  • the construction method of the root side 11 is not particularly limited. For details of the construction method, refer to Patent Document 2, for example.
  • the base side 11 of the concrete foundation 10 extends in a direction perpendicular to the paper surface of FIG. In the following description, the direction that intersects the longitudinal direction of the concrete foundation 10 in the horizontal plane is referred to as the short direction.
  • a plurality of anchor bolts 21 are embedded in the root side 11.
  • the anchor bolt 21 extends in the vertical direction, and the upper end portion of the anchor bolt 21 protrudes from the upper surface 13 of the root side 11.
  • the plurality of anchor bolts 21 are arranged in an orderly manner with respect to the short side direction and the long side direction of the concrete foundation 10.
  • the base side 11 of the concrete foundation 10 When the base side 11 of the concrete foundation 10 is constructed as shown in FIG. 1 and the base side concrete is hardened, the pair of molds 31 are removed, and both sides 12 of the concrete foundation are filled as shown in FIG. return.
  • the upper surface 13 of the base side 11 is substantially the same height as the ground height GL.
  • Both side surfaces 12, 12 of the concrete foundation 10 are adjacent to the backfill portion 16.
  • the lower nut 22 is screwed into the male screw portion 21t formed on the outer periphery of the upper end portion of each anchor bolt 21, and the upper end surface of the lower nut 22 is adjusted to the design top end height TL.
  • the top end formwork 32 is attached and fixed to the anchor bolt 21.
  • the top end formwork 32 has a flat portion 33 facing the top surface 13 of the base side 11 and a plurality of anchor bolt through holes 34 provided in the flat portion 33.
  • the arrangement of the plurality of anchor bolt through holes 34 corresponds to a predetermined arrangement of the anchor bolts 21.
  • the lower surface 33 s of the flat portion 33 is smooth, is held at the design top end height TL, and faces the upper surface 13.
  • Each anchor bolt 21 is passed through the anchor bolt through hole 34, and the lower nut 22 supports the lower surface 33s.
  • An upper nut 23 is further screwed into each anchor bolt 21.
  • the top end formwork 32 is sandwiched between the upper nut 23 and the lower nut 22 and is prevented from being lifted and moved by the concrete pressure.
  • fresh concrete is filled between the top end formwork 32 and the upper surface 13 of the root side 11.
  • the top end concrete 14 and the soil concrete 17 are placed simultaneously.
  • the dirt concrete 17 covers the backfill portions 16 on both sides and spreads in the horizontal direction.
  • the top concrete 14 is united with the soil concrete 17 by the concrete placement once shown in FIG.
  • top end concrete 14 and the soil concrete 17 are hardened, the upper nut 23 is removed and the top end formwork 32 is removed as shown in FIG.
  • the top end concrete 14 is firmly attached to the upper surface 13 of the base side 11, and the top end concrete 14 is integrated with the base side 11.
  • the lower nut 22 is embedded in the top concrete 14.
  • the top end 18 of the concrete foundation 10 is formed horizontally in accordance with the design top end height TL.
  • pillar materials and wall materials (not shown) are placed on the top end 18, and these pillar materials and wall materials are attached and fixed to the concrete foundation using anchor bolts 21.
  • the top end 18 of the concrete foundation 10 can be horizontally formed with the design top end height TL by the top end formwork 32. Therefore, it is not necessary to level the top end concrete 14, and the top end 18 can be finished accurately and efficiently without a skilled plasterer.
  • the top end formwork 32 of the present embodiment further has a rising portion 35 that rises from the side edge of the flat portion 33 as shown in FIG. Then, as shown in FIG. 4, in the step of filling ready concrete between the top end formwork 32 and the upper surface 13 of the base side 11, the rising portion 35 forms a stepped surface rising from the concrete top end 18.
  • the step surface 19 can be formed continuously from the top end 18 as shown in FIG.
  • the step surface 19 is an edge of the soil concrete 17.
  • the step surface 19 may be a step of another structure made of concrete. As shown in FIG.
  • the crossing angle between the pressing surface 35s of the rising portion 35 and the lower surface 33s of the flat portion 33 is about 270 °, but strictly speaking, it is slightly smaller than 270 °. This facilitates the removal of the top end formwork 32 shown in FIG.
  • the top end formwork 32 shown in FIG. 3 has rising portions 35 on both side edges in the short direction, but the rising portions 35 may be provided only on one of the side edges.
  • FIG. 6 to 9 are cross-sectional views showing the construction method of the concrete foundation top end according to another embodiment of the present invention in time series.
  • the same reference numerals are given to the configurations common to the above-described embodiments, and the description thereof will be omitted, and different configurations will be described below.
  • FIG. 6 corresponds to FIG. 2 described above and shows a state in which the base side 11 of the concrete foundation is constructed and at least one side surface 12 is backfilled.
  • the reinforcing bar set 24 is laid on the upper surface of the backfill portion 16. A part of the reinforcing bar set 24 is bent and extends downward, and is embedded in the rising portion 11w.
  • FIG. 7 corresponds to FIG. 3 described above.
  • the top end formwork 32 used in the other embodiment further has a hanging portion 36 provided so as to hang from one side edge in the short direction of the flat portion 33.
  • the hanging portion 36 contacts one side surface 12 of the base side 11.
  • An inclined portion 37 is formed at the boundary between the drooping portion 36 and the flat portion 33.
  • the intersection angle between the flat portion 33 and the inclined portion 37 is, for example, 135 °.
  • the crossing angle between the hanging portion 36 and the inclined portion 37 is, for example, 135 °. That is, the angle formed by the plane portion 33 and the suspended portion 36 is 90 °.
  • the top end formwork 32 of FIG. 7 will be described in detail later.
  • top concrete 14 is filled below the flat portion 33 from the other side edge in the short direction of the flat portion 33.
  • soil concrete 17 is placed on the upper surface of the backfill portion 16, and the reinforcing bar set 24 is buried in the soil concrete 17.
  • the suspended portion 36 and the inclined portion 37 hold the top end concrete 14 from one side in the short direction, and connect the top end 18 and the side surface 12 with a good appearance.
  • the rising portion 35 presses the ready-mixed concrete to form a step surface 19 on the edge of the soil concrete 17.
  • FIG. 8 corresponds to FIG. 4 described above.
  • FIG. 9 the upper nut is loosened, the top end formwork is removed, and these are removed from the anchor bolt 21.
  • the top end concrete 14 firmly adheres to the upper surface 13 of the root side 11.
  • the soil concrete 17 is united with the top concrete 14 by the concrete placement once shown in FIG. FIG. 9 corresponds to FIG. 5 described above.
  • a chamfer 20 is formed at the boundary between the side surface 12 and the top end 18 by the pressing surface of the inclined portion 37 (FIG. 8).
  • FIG. 10 is a plan view showing the top formwork shown in FIG. 7 and FIG.
  • FIG. 11 is a cross-sectional view showing the top end formwork shown in FIGS. 7 and 8, and shows a state seen in the longitudinal direction.
  • FIG. 12 is a side view showing the top end formwork shown in FIGS. 7 and 8. 10 and 12 show a state in which two identical top end molds 32 are connected in the longitudinal direction.
  • the top end formwork 32 includes at least a flat portion 33 that is supported horizontally, and presses ready-mixed concrete on the lower surface 33 s of the flat portion 33.
  • the lower surface 33 s of the flat portion 33 is formed flat, but may partially include irregularities.
  • the plane portion 33 is provided with a plurality of anchor bolt through holes 34 and a plurality of air vent holes 33h.
  • the flat portion 33 is a rectangular plate as shown in FIG.
  • the air vent holes 33h and the anchor bolt through holes 34 have the same diameter and are preferably arranged in a predetermined arrangement pattern. Thereby, the air vent hole 33h and the anchor bolt through hole 34 can be used together. Therefore, the hole that was the anchor bolt through hole 34 at the previous construction site may become the air vent hole 33h at the next construction site, or vice versa.
  • the inner diameter of the air vent hole is not particularly limited, and the air vent hole may be smaller in diameter than the anchor bolt through hole 34. In this embodiment, as shown in FIG. 10 and FIG. 12, it further has an air vent hole with a small diameter.
  • the top end formwork 32 of the present embodiment includes a flat surface portion 33 having an upper surface 33r and a lower surface 33s, and a side surface portion that intersects the flat surface portion 33 at a predetermined angle as shown in FIG.
  • the side portion includes a rising portion 35, an inclined portion 37, and a depending portion 36.
  • the plane portion 33 and the side surface portion have substantially the same thickness.
  • Each side surface portion constitutes pressing surfaces 35s, 36s, and 37s continuous from the lower surface 33s.
  • the drooping portion 36 is extended to one edge of the flat portion 33 in the short direction.
  • the rising portion 35 extends to the other edge of the flat portion 33 in the short direction.
  • the crossing angle between the plane portion 33 and the side surface portion is included in a range exceeding 90 ° and less than 270 °.
  • the pressing surface 36 s of the hanging portion 36 is made vertical, an inclined portion 37 is provided at the boundary between the flat portion 33 and the hanging portion 36, and the lower surface 33 s of the flat portion 33 and the pressing surface 37 s of the inclined portion 37 are Is a predetermined angle included in the range of more than 90 ° and less than 140 °.
  • the intersection angle between the lower surface 33 s of the flat portion 33 and the pressing surface 37 s of the inclined portion 37 is 135 °.
  • the intersection angle between the pressing surface 36s of the hanging portion 36 and the pressing surface 37s of the inclined portion 37 is a predetermined angle included in the range of more than 90 ° and less than 140 °.
  • the crossing angle of the pressing surface 36s of the hanging portion 36 and the pressing surface 37s of the inclined portion 37 is 135 °.
  • the crossing angle formed by the lower surface 33s and the pressing surface 36s is 90 °.
  • the crossing angle between the plane portion 33 and the rising portion 35 is a predetermined angle included in a range of 250 ° or more and less than 270 °.
  • the inclined portion 37 is a rectangular plate extending along the plane portion 33.
  • the hanging portion 36 is also a rectangular plate extending in parallel with the flat portion 33 and the inclined portion 37.
  • the rising portion 35 is also a rectangular plate extending along the plane portion 33.
  • the lower surface 33s (FIG. 11) of the flat portion 33 is horizontally supported by the aforementioned lower nut (reference numeral 22 in FIG. 6), and the pressing surface 36s (FIG. 11) of the hanging portion 36 is made vertical.
  • the flat portion 33 and the rising portion 35, the hanging portion 36, and the inclined portion 37 as side portions are integrally formed.
  • Upward ribs 38 extending in the short direction are provided at both ends of the flat portion 33 and the side surface in the longitudinal direction.
  • Each rib 38 is connected to the rising portion 35.
  • a plurality of the top end molds 32 can be aligned and arranged continuously in the longitudinal direction.
  • the rib 38 of one top end mold 32 and the rib 38 ′ of the other top end mold 32 ′ may be brought into close contact with each other, and the ribs 38 and 38 ′ overlapped with each other may be sandwiched between the clips 39. Thereby, adjacent top end formwork 32, 32 'is connected without gap.
  • a through hole 38h may be provided in the rib 38.
  • the shaft of the clip 39 is passed through the through hole 38h, and the clip 39 is rotatable around the through hole 38h like a lever.
  • the operator can push the clip 39 into the two overlapping ribs 38 and 38 ′ with a small force and pinch it with a small force, or lift it to release the pinching.
  • the lower surface 33s of the flat portion 33 is continuous without any gap in the longitudinal direction.
  • the top end 18 of the concrete foundation 10 shown in FIG. 9 is formed.
  • the pressing surface 36 s of the hanging portion 36 is pressed against the existing root side 11.
  • the top end 18 can be formed smoothly and continuously on the side surface 12 of the root side 11.
  • the pressing surface 35 s of the rising portion 35 forms a step surface 19 of a concrete structure, for example, soil concrete 17.
  • a concrete structure for example, soil concrete 17.
  • the pressing surface 36s of the hanging portion 36 is a vertical surface, and the pressing surface 37s of the inclined portion 37 is continuous with the lower surface 33s of the flat surface portion 33 and the pressing surface 36s of the hanging portion 36 at an obtuse angle of, for example, 135 °. 18 and the side surface 12 are smoothly connected. Moreover, the top frame can be easily removed.
  • the example of the ceiling mold having the inclined portion and the hanging portion intersecting with the flat portion in two stages has been shown, but the inclined portion is omitted as a modification (not shown), and the flat portion, the hanging portion, May be continued at a predetermined angle included in the range of more than 90 ° and not more than 99 °.
  • the concrete foundation and the ceiling mold form extend linearly in the horizontal direction, but the present invention is not limited to this.
  • the concrete foundation may be bent in an L shape in the horizontal direction and extend.
  • the top end formwork may be bent and arranged in an L shape in the plan view.
  • a concrete foundation may extend in the shape of a letter T horizontally.
  • the top end formwork may also be arranged in a T shape in the plan view.
  • the top formwork corresponds to the linear shape corresponding to the concrete foundation supporting the boundary wall on the outer periphery of the building and the concrete foundation supporting the partition wall inside the building as the linear shape shown in FIGS. 10 to 12 described above.
  • ⁇ Concrete foundation top construction method and top formwork according to the present invention are advantageously used in foundation construction.

Abstract

This construction method has: a step for preparing a top end form (32), passing an anchor bolt (21) through a hole (34) in the top end form, and attaching and securing the top end form to the anchor bolt so that the top end form faces the base-side (11) top surface (13) of a concrete foundation (10); a step for filling the gap between the top end form and the base-side top surface with fresh concrete; and a step for removing the top end form after curing of the fresh concrete.

Description

コンクリート基礎天端の施工方法および天端型枠Concrete foundation top method and top formwork
　本発明は、建物のコンクリート基礎を施工する工法に関する。 The present invention relates to a construction method for constructing a concrete foundation of a building.
　建物のコンクリート基礎としては従来、例えば、特開平１－１５８１１８号公報（特許文献１）および特開２０１３－１５９９２２号公報（特許文献２）に記載のごときものが知られている。特許文献１および特許文献２に記載のコンクリート基礎は、断面形状が逆Ｔ字状であり、地盤に沿って水平方向に延びる布基礎である。布基礎の両側面は互いに向き合って平行に立ち上がる１対の型枠によって形成される。さらに特許文献１および特許文献２に布基礎は、地盤を覆う土間コンクリートと接続する。 Conventional concrete foundations for buildings are known, for example, as described in JP-A-1-158118 (Patent Document 1) and JP-A-2013-159922 (Patent Document 2). The concrete foundations described in Patent Literature 1 and Patent Literature 2 are cloth foundations having a reverse T-shaped cross section and extending in the horizontal direction along the ground. Both side surfaces of the fabric foundation are formed by a pair of molds that face each other and rise in parallel. Further, in Patent Document 1 and Patent Document 2, the fabric foundation is connected to soil concrete covering the ground.
特開平１－１５８１１８号公報JP-A-1-158118 特開２０１３－１５９９２２号公報JP 2013-159922 A
　コンクリート基礎の天端には建物躯体の柱および壁材等が設置される。このためコンクリート基礎の天端は水平に形成される必要がある。従来は、１対の型枠に目印をつけ、かかる目印を目標にして生コンクリートが硬化しないうちに天端を鏝で均していた。しかしこの作業は工数および熟練を要し、コストと工期において改善の余地がある。また雨が多い季節や豪雨地帯では、天端の鏝均し作業およびその後の養生が困難である。 The pillars and wall materials of the building frame will be installed at the top of the concrete foundation. For this reason, the top of the concrete foundation needs to be formed horizontally. In the past, a pair of molds were marked, and the top edge was leveled with a scissors before the ready-mixed concrete hardened. However, this work requires man-hours and skill, and there is room for improvement in terms of cost and construction period. In addition, in the rainy season and heavy rain zone, it is difficult to perform the top leveling and subsequent curing.
　あるいは通常のコンクリートよりも格段に流れ易い特殊なコンクリート（流動化コンクリートあるいはセルフレベリング材）を準備しておき、布基礎のコンクリート打設の最終場面に流動化コンクリートを流し込むことが考えられる。しかしながら流動化コンクリートは一般的ではなく、大量に準備することが困難であり、コスト増の原因にもなる。しかも流動化コンクリートは格段に流れ易いといっても緩い傾斜面が残ってしまうため、天端を正しい高さで水平に仕上げることができない。 Alternatively, it may be possible to prepare special concrete (fluidized concrete or self-leveling material) that is much easier to flow than normal concrete, and pour the fluidized concrete into the final scene of cloth foundation concrete placement. However, fluidized concrete is not common and is difficult to prepare in large quantities, which also causes an increase in cost. Moreover, even if fluidized concrete is remarkably easy to flow, a loose inclined surface remains, so the top end cannot be finished horizontally at the correct height.
　本発明は、上述の実情に鑑み、通常のコンクリートを用いながらも、工数に過大な負担を掛けることなく、コンクリート基礎の天端を正しい高さで水平面に仕上げることができる施工工法を提供することを目的とする。 In view of the above circumstances, the present invention provides a construction method capable of finishing the top of a concrete foundation into a horizontal plane at a correct height without imposing an excessive burden on man-hours while using ordinary concrete. With the goal.
　この目的のため本発明によるコンクリート基礎天端の施工方法は、コンクリート製の天端と、該天端から上方へ突出する複数のアンカーボルトとを備えるコンクリート基礎において、かかる天端を施工する方法であって、アンカーボルトを含むコンクリート基礎の根元側を構築する工程と、平面部分および該平面部分に設けられる孔を有する天端型枠を準備し、天端型枠の孔にアンカーボルトを差し込み、天端型枠を根元側の上面と対向するようアンカーボルトに取付固定する工程と、天端型枠と根元側の上面との間に天端コンクリートを充填する工程と、天端コンクリートの硬化後、天端型枠を取り外す工程とを備える。 For this purpose, the method of constructing the top of a concrete foundation according to the present invention is a method of constructing the top of a concrete foundation comprising a concrete top and a plurality of anchor bolts projecting upward from the top. A step of constructing a base side of a concrete foundation including an anchor bolt, and preparing a top end formwork having a flat part and a hole provided in the flat part, and inserting the anchor bolt into the hole of the top end formwork, Attaching and fixing the top end formwork to the anchor bolt so as to face the top surface of the base side, a step of filling the top end concrete between the top end formwork and the top side of the base side, and after hardening of the top end concrete And a step of removing the top end formwork.
　かかる本発明によれば、天端型枠を正しい高さに水平に取付固定することによって、コンクリート基礎天端を正しい高さで水平に形成することができる。特に大型の建物において天端を鏝で均す等の作業がなくなり、コスト上のメリットが増大する。 According to the present invention, the top of the concrete foundation can be horizontally formed at the correct height by mounting and fixing the top end formwork horizontally at the correct height. In particular, work such as leveling the top of a large building is eliminated, and the cost advantage increases.
　天端型枠の固定方法は特に限定されないが、好ましい実施形態として、アンカーボルトは下側ナットおよび上側ナットと螺合し、天端型枠をアンカーボルトに取付固定する工程において、天端型枠は下側ナットおよび上側ナットに挟まれる。かかる実施形態によればアンカーボルトおよびナットの組み合わせを利用して天端型枠を容易に取付固定したり取り外したりすることができる。他の実施形態として、ナット以外の取付具を利用してアンカーボルトに天端型枠を取付固定してもよい。 The method for fixing the top end formwork is not particularly limited. In a preferred embodiment, the anchor bolt is screwed with the lower nut and the upper nut, and the top end formwork is attached and fixed to the anchor bolt. Is sandwiched between the lower nut and the upper nut. According to this embodiment, the top end formwork can be easily attached and fixed or removed using a combination of anchor bolts and nuts. As another embodiment, the top end formwork may be attached and fixed to the anchor bolt using an attachment other than the nut.
　コンクリート基礎の根元側の形状および大きさは特に限定されず、根元側と天端型枠の距離および位置関係は特に限定されないが、天端型枠を根元部の側面の近傍に配置するとよい。本発明の好ましい実施形態として、根元側は上面の側縁から垂下する側面を有し、天端型枠は、平面部分の側縁から垂下するように設けられる垂下部分をさらに有し、天端型枠をアンカーボルトに取付固定する工程において、垂下部分は根元側の側面と接触する。かかる実施形態によれば基礎の天端と基礎の側面を見栄えよく連続させることができる。天端型枠の垂下部分は平面部分の片側のみに設けられて根元側の片側の側面と接触してもよいし、あるいは平面部分の両側にそれぞれ設けられて根元側の両側の側面と接触してもよい。 The shape and size of the base side of the concrete foundation are not particularly limited, and the distance and the positional relationship between the base side and the top end formwork are not particularly limited, but the top end formwork may be disposed in the vicinity of the side face of the base part. As a preferred embodiment of the present invention, the base side has a side surface depending from the side edge of the upper surface, and the ceiling end formwork further has a hanging portion provided so as to hang from the side edge of the plane portion. In the process of attaching and fixing the formwork to the anchor bolt, the hanging portion comes into contact with the side surface on the base side. According to this embodiment, the top end of the foundation and the side surface of the foundation can be continuously viewed with good appearance. The hanging part of the top end formwork may be provided only on one side of the flat part and may be in contact with one side surface of the base part, or may be provided on both sides of the flat part and in contact with both side surfaces of the base part. May be.
　本発明の好ましい他の実施形態として、天端型枠は、垂下部分と平面部分との境界に傾斜部分をさらに有し、天端型枠と根元側の上面との間に天端コンクリートを充填する工程において、傾斜部分はコンクリート天端の側縁に面取りを形成する。かかる実施形態によれば、基礎の天端と基礎の側面の境界領域に面取りを形成されることから、コンクリート基礎において、基礎の天端と基礎の側面の接続箇所が破損することを防止できる。あるいは他の実施形態として、天端型枠は傾斜部分を有さず、コンクリート基礎の側面および天端を９０°で交差させて形成してもよい。 As another preferred embodiment of the present invention, the top end formwork further has an inclined part at the boundary between the suspended part and the flat part, and the top end concrete is filled between the top end formwork and the upper surface on the base side. In this process, the inclined portion forms a chamfer on the side edge of the concrete top. According to this embodiment, since the chamfer is formed in the boundary region between the top end of the foundation and the side surface of the foundation, it is possible to prevent the connection portion between the top end of the foundation and the side surface of the foundation from being damaged in the concrete foundation. Alternatively, as another embodiment, the top end formwork does not have an inclined portion and may be formed by intersecting the side surface of the concrete foundation and the top end at 90 °.
　あるいは本発明の他の実施形態として天端型枠は、平面部分の側縁から立ち上がる立ち上がり部分をさらに有し、天端型枠と根元側の上面との間に天端コンクリートを充填する工程において、立ち上がり部分は天端から立ち上がる段差面を形成する。かかる実施形態によれば基礎の天端に隣接してコンクリートで天端から立ち上がる段差面を形成することができる。段差面は例えば土間コンクリートの縁になる。 Alternatively, as another embodiment of the present invention, the top end formwork further includes a rising portion that rises from the side edge of the plane part, and in the step of filling the top end concrete between the top end formwork and the upper surface on the root side. The rising part forms a stepped surface rising from the top. According to this embodiment, it is possible to form a stepped surface rising from the top with concrete adjacent to the top of the foundation. The step surface becomes, for example, an edge of soil concrete.
　本発明の天端型枠は、上面および下面を有し下面は平坦に形成される平面部分と、平面部分に形成された複数のアンカーボルト貫通孔、および下面から連続する押さえ面を有し、平面部分の下面から押さえ面までの角度が９０°を超え２７０°未満の範囲に含まれる所定の角度なすよう、平面部分と交差する側面部分とを備え、アンカーボルト貫通孔はコンクリート基礎のアンカーボルトを通され、平面部分の下面はコンクリート基礎の天端を形成し、傾斜部分の押さえ面はコンクリートを押さえる。かかる本発明によれば、天端型枠を正しい高さに水平に設置することによって、コンクリート基礎天端を正しい高さで水平に形成することができる。特に大型の建物において天端を鏝で均す等の作業がなくなり、コスト上のメリットが増大する。なお平面部分の上面には、アンカーボルトに固定されるための座部、例えばナットに安定して支持される座部、や天端型枠の剛性を高めるため複数のリブが設けられる。なお側面部分は、平面部分から立ち上がって形成されてもよいし、あるいは垂れ下がって形成されてもよい。なお所定の角度とは、平面部分のコンクリート押さえ面（下面）から側面部分のコンクリート押さえ面（押さえ面）までの角度をいう。連続する押さえ面同士の角度が９０°以下の場合、脱枠後のコンクリートが直角あるいは９０°以下の鋭角で外方へ突出してしまい、該突出箇所で欠けや割れが生じる原因となるので好ましくない。連続する押さえ面同士の角度が２７０°以上の場合、脱枠後のコンクリートに直角あるいは９０°以下の鋭角で窪んだ溝、例えばＶ字溝、が形成されてしまい、溝底を起点としてコンクリートにひび割れが生じる原因となるので好ましくない。 The top end formwork of the present invention has an upper surface and a lower surface, and the lower surface has a flat surface portion formed flat, a plurality of anchor bolt through holes formed in the flat surface portion, and a pressing surface continuous from the lower surface, The anchor bolt through-hole is provided with a concrete foundation anchor bolt so that the angle from the lower surface of the plane portion to the pressing surface is a predetermined angle included in the range of more than 90 ° and less than 270 °. The lower surface of the flat part forms the top edge of the concrete foundation, and the pressing surface of the inclined part presses the concrete. According to this invention, the concrete foundation top end can be horizontally formed at the correct height by installing the top end formwork horizontally at the correct height. In particular, work such as leveling the top of a large building is eliminated, and the cost advantage increases. The upper surface of the flat portion is provided with a seat portion to be fixed to the anchor bolt, for example, a seat portion that is stably supported by a nut, and a plurality of ribs for increasing the rigidity of the top end formwork. The side surface portion may be formed to rise from the flat surface portion or may be formed to hang down. The predetermined angle refers to an angle from the concrete pressing surface (lower surface) of the flat surface portion to the concrete pressing surface (pressing surface) of the side surface portion. When the angle between the continuous pressing surfaces is 90 ° or less, the concrete after deframement protrudes outward at a right angle or an acute angle of 90 ° or less, which may cause chipping or cracking at the protruding portion. . When the angle between the continuous pressing surfaces is 270 ° or more, a groove that is perpendicular or 90 ° or less, such as a V-shaped groove, is formed in the concrete after the frame is removed, and the concrete starts from the groove bottom. This is not preferable because it causes cracks.
　本発明の好ましい他の実施形態として、平面部分は長方形の板であり、平面部分の長手方向端部には、短手方向に延びる上向きのリブが形成され、重なり合うリブを挟持するクリップをさらに備える。かかる実施形態によれば、水平方向に連続して延びるコンクリート基礎に、複数枚の天端型枠を隙間なく連続して取付固定することができる。 As another preferred embodiment of the present invention, the planar portion is a rectangular plate, and an upward rib extending in the short direction is formed at the longitudinal end of the planar portion, and further provided with a clip for sandwiching the overlapping ribs. . According to this embodiment, it is possible to continuously attach and fix a plurality of top end molds to a concrete foundation extending in the horizontal direction without gaps.
　本発明の好ましい他の実施形態として側面部分は、長方形に形成された平面部分に沿って同じの長手方向長さで延びる板であり、平面部分のリブは平面部分の長手方向端部から側面部分の長手方向端部まで形成される。かかる実施形態によれば、平面部分と側面部分との接続箇所の剛性が大きくなり、天端型枠の不所望な変形を防止できる。 As another preferred embodiment of the present invention, the side portion is a plate extending at the same longitudinal length along the rectangular flat portion, and the rib of the flat portion extends from the longitudinal end of the flat portion to the side portion. Are formed up to the longitudinal ends. According to this embodiment, the rigidity of the connection part of a plane part and a side part becomes large, and the undesired deformation | transformation of a top end formwork can be prevented.
　このように本発明によれば、通常のコンクリートを用いながらも、工数に過大な負担を掛けることなく、コンクリート基礎の天端を正しい高さで水平面に仕上げることができる。特に雨期や豪雨地帯における施工効率が著しく向上する。 As described above, according to the present invention, the top end of the concrete foundation can be finished in a horizontal plane with a correct height without imposing an excessive burden on the man-hours while using normal concrete. In particular, the construction efficiency in the rainy season and heavy rain zone is significantly improved.
コンクリート基礎の根元側を例示する横断面図である。It is a cross-sectional view which illustrates the base side of a concrete foundation. コンクリート基礎の根元側を埋め戻した状態を示す横断面図である。It is a cross-sectional view which shows the state which refilled the base side of the concrete foundation. コンクリート基礎の根元側上面と対向するよう天端型枠を取付固定した状態を示す横断面図である。It is a cross-sectional view which shows the state which attached and fixed the top end formwork so that the base side upper surface of a concrete foundation might be opposed. コンクリート基礎の根元側上面と天端型枠との間に天端コンクリートを充填した状態を示す横断面図である。It is a cross-sectional view which shows the state with which top end concrete was filled between the base side upper surface of a concrete foundation, and the top end formwork. 天端コンクリートの硬化後に天端型枠を取り外した状態を示す横断面図である。It is a cross-sectional view which shows the state which removed the top end formwork after hardening of the top end concrete. コンクリート基礎の根元側を示す斜視図である。It is a perspective view which shows the base side of a concrete foundation. コンクリート基礎の根元側上面と対向するよう天端型枠を取付固定した状態を示す斜視図である。It is a perspective view which shows the state which attached and fixed the top end formwork so as to oppose the base side upper surface of a concrete foundation. コンクリート基礎の根元側上面と天端型枠との間に天端コンクリートを充填した状態を示す斜視図である。It is a perspective view which shows the state with which top end concrete was filled between the base side upper surface of a concrete foundation, and the top end formwork. 天端コンクリートの硬化後に天端型枠を取り外した状態を示す横断面図である。It is a cross-sectional view which shows the state which removed the top end formwork after hardening of the top end concrete. 図７および図８に示す天端型枠を示す平面図である。It is a top view which shows the top end formwork shown in FIG.7 and FIG.8. 図７および図８に示す天端型枠を示す横断面図である。It is a cross-sectional view which shows the top end formwork shown in FIG. 7 and FIG. 図７および図８に示す天端型枠を示す側面図である。It is a side view which shows the top end formwork shown in FIG.7 and FIG.8.
　以下、本発明の実施の形態を、図面に基づき詳細に説明する。図１～図５は、本発明になるコンクリート基礎１０天端の施工方法を時系列で示す横断面図である。まず図１に示すように、コンクリート基礎全体のうち天端を除いた根元側１１を構築する。つまり根元側１１はコンクリート基礎の大部分である。コンクリート基礎１０は断面逆Ｔ字状であり、スラブ１１ｓと立ち上がり部１１ｗからなる。立ち上がり部１１ｗは互いに向き合って水平方向に平行に延びる１対の型枠３１で形成される。根元側１１の構築方法は特に限定されない。構築方法の詳細は、例えば特許文献２を参照されたい。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 5 are cross-sectional views showing the construction method of the top 10 of the concrete foundation according to the present invention in time series. First, as shown in FIG. 1, the base side 11 except the top end of the entire concrete foundation is constructed. In other words, the base side 11 is the majority of the concrete foundation. The concrete foundation 10 has an inverted T-shaped cross section and includes a slab 11s and a rising portion 11w. The rising portions 11w are formed of a pair of molds 31 that face each other and extend in parallel in the horizontal direction. The construction method of the root side 11 is not particularly limited. For details of the construction method, refer to Patent Document 2, for example.
　コンクリート基礎１０の根元側１１は、図１の紙面に直角方向、すなわち水平方向、に延びている。以下の説明では、水平面においてコンクリート基礎１０の長手方向と交差する方向を短手方向という。根元側１１には複数本のアンカーボルト２１が埋め込まれる。アンカーボルト２１は上下方向に延び、アンカーボルト２１の上端部が根元側１１の上面１３から突出する。複数本のアンカーボルト２１は、コンクリート基礎１０の短手方向および長手方向に関し、整然と配列される。 The base side 11 of the concrete foundation 10 extends in a direction perpendicular to the paper surface of FIG. In the following description, the direction that intersects the longitudinal direction of the concrete foundation 10 in the horizontal plane is referred to as the short direction. A plurality of anchor bolts 21 are embedded in the root side 11. The anchor bolt 21 extends in the vertical direction, and the upper end portion of the anchor bolt 21 protrudes from the upper surface 13 of the root side 11. The plurality of anchor bolts 21 are arranged in an orderly manner with respect to the short side direction and the long side direction of the concrete foundation 10.
　図１に示すようにコンクリート基礎１０の根元側１１を構築し、根元側コンクリートが硬化すると、１対の型枠３１を脱枠し、図２に示すようにコンクリート基礎の側面１２を両方とも埋め戻す。根元側１１の上面１３は地盤高ＧＬと略同じ高さである。コンクリート基礎１０の両側面１２，１２は、埋め戻し部１６と隣接する。各アンカーボルト２１の上端部外周に形成された雄ねじ部２１ｔには下側ナット２２を螺合させ、下側ナット２２の上端面を設計天端高ＴＬに調整する。 When the base side 11 of the concrete foundation 10 is constructed as shown in FIG. 1 and the base side concrete is hardened, the pair of molds 31 are removed, and both sides 12 of the concrete foundation are filled as shown in FIG. return. The upper surface 13 of the base side 11 is substantially the same height as the ground height GL. Both side surfaces 12, 12 of the concrete foundation 10 are adjacent to the backfill portion 16. The lower nut 22 is screwed into the male screw portion 21t formed on the outer periphery of the upper end portion of each anchor bolt 21, and the upper end surface of the lower nut 22 is adjusted to the design top end height TL.
　次に図３に示すように、天端型枠３２をアンカーボルト２１に取付固定する。天端型枠３２は根元側１１の上面１３と対向する平面部分３３と、平面部分３３に設けられる複数のアンカーボルト貫通孔３４を有する。複数のアンカーボルト貫通孔３４の配列は、予め決められたアンカーボルト２１の配列に対応する。平面部分３３の下面３３ｓは平滑であり、設計天端高ＴＬに保持されて、上面１３と向き合う。 Next, as shown in FIG. 3, the top end formwork 32 is attached and fixed to the anchor bolt 21. The top end formwork 32 has a flat portion 33 facing the top surface 13 of the base side 11 and a plurality of anchor bolt through holes 34 provided in the flat portion 33. The arrangement of the plurality of anchor bolt through holes 34 corresponds to a predetermined arrangement of the anchor bolts 21. The lower surface 33 s of the flat portion 33 is smooth, is held at the design top end height TL, and faces the upper surface 13.
　各アンカーボルト２１はアンカーボルト貫通孔３４に通されて、下側ナット２２が下面３３ｓを支持する。各アンカーボルト２１には上側ナット２３がさらに螺合される。天端型枠３２は上側ナット２３と下側ナット２２に挟持され、コンクリート圧による浮き上がり移動を防止される。 Each anchor bolt 21 is passed through the anchor bolt through hole 34, and the lower nut 22 supports the lower surface 33s. An upper nut 23 is further screwed into each anchor bolt 21. The top end formwork 32 is sandwiched between the upper nut 23 and the lower nut 22 and is prevented from being lifted and moved by the concrete pressure.
　次に図４に示すように、天端型枠３２と根元側１１の上面１３との間に生コンクリートを充填する。本実施形態では、天端コンクリート１４および土間コンクリート１７を同時に打設する。土間コンクリート１７は両側の埋め戻し部１６を覆い、水平方向に広がる。図４に示す一度のコンクリート打設により、天端コンクリート１４は土間コンクリート１７と一体にされる。 Next, as shown in FIG. 4, fresh concrete is filled between the top end formwork 32 and the upper surface 13 of the root side 11. In the present embodiment, the top end concrete 14 and the soil concrete 17 are placed simultaneously. The dirt concrete 17 covers the backfill portions 16 on both sides and spreads in the horizontal direction. The top concrete 14 is united with the soil concrete 17 by the concrete placement once shown in FIG.
　天端コンクリート１４および土間コンクリート１７が硬化すると、次に図５に示すように、上側ナット２３を除去し天端型枠３２を脱枠する。天端コンクリート１４は根元側１１の上面１３に確りと付着し、天端コンクリート１４は根元側１１と一体化する。下側ナット２２は天端コンクリート１４に埋設される。コンクリート基礎１０の天端１８は、設計天端高ＴＬと一致して、水平に形成される。次に天端１８には、図示しない柱材や壁材が載置され、これらの柱材や壁材は、アンカーボルト２１を利用してコンクリート基礎に取付固定される。 When the top end concrete 14 and the soil concrete 17 are hardened, the upper nut 23 is removed and the top end formwork 32 is removed as shown in FIG. The top end concrete 14 is firmly attached to the upper surface 13 of the base side 11, and the top end concrete 14 is integrated with the base side 11. The lower nut 22 is embedded in the top concrete 14. The top end 18 of the concrete foundation 10 is formed horizontally in accordance with the design top end height TL. Next, pillar materials and wall materials (not shown) are placed on the top end 18, and these pillar materials and wall materials are attached and fixed to the concrete foundation using anchor bolts 21.
　このように本実施形態によれば、天端型枠３２によって、コンクリート基礎１０の天端１８を、設計天端高ＴＬで水平に形成することができる。したがって天端コンクリート１４の鏝均しが不要であり、熟練した左官職人がいなくても天端１８を正確かつ効率よく仕上げることができる。 Thus, according to the present embodiment, the top end 18 of the concrete foundation 10 can be horizontally formed with the design top end height TL by the top end formwork 32. Therefore, it is not necessary to level the top end concrete 14, and the top end 18 can be finished accurately and efficiently without a skilled plasterer.
　また本実施形態の天端型枠３２は、図３に示すように平面部分３３の側縁から立ち上がる立ち上がり部分３５をさらに有する。そして図４に示すように、天端型枠３２と根元側１１の上面１３との間に生コンクリートを充填する工程において、立ち上がり部分３５はコンクリート天端１８から立ち上がる段差面を形成する。本実施形態によれば、図３に示すように天端１８に連続して段差面１９を形成することができる。段差面１９は土間コンクリート１７の縁である。図示しない変形例として段差面１９は、コンクリート製の他の構造物の段差であってもよい。なお図３に示すように立ち上がり部分３５の押さえ面３５ｓと平面部分３３の下面３３ｓとの交差角度は約２７０°であるが、厳密には２７０°よりも僅かに小さい。これにより図５に示す天端型枠３２の脱枠が容易になる。なお図３に示す天端型枠３２は、短手方向両側縁に立ち上がり部分３５を有するが、立ち上がり部分３５はいずれか一方の側縁にのみ設けられていてもよい。 The top end formwork 32 of the present embodiment further has a rising portion 35 that rises from the side edge of the flat portion 33 as shown in FIG. Then, as shown in FIG. 4, in the step of filling ready concrete between the top end formwork 32 and the upper surface 13 of the base side 11, the rising portion 35 forms a stepped surface rising from the concrete top end 18. According to the present embodiment, the step surface 19 can be formed continuously from the top end 18 as shown in FIG. The step surface 19 is an edge of the soil concrete 17. As a modification not shown, the step surface 19 may be a step of another structure made of concrete. As shown in FIG. 3, the crossing angle between the pressing surface 35s of the rising portion 35 and the lower surface 33s of the flat portion 33 is about 270 °, but strictly speaking, it is slightly smaller than 270 °. This facilitates the removal of the top end formwork 32 shown in FIG. The top end formwork 32 shown in FIG. 3 has rising portions 35 on both side edges in the short direction, but the rising portions 35 may be provided only on one of the side edges.
　次に本発明の他の実施形態を説明する。 Next, another embodiment of the present invention will be described.
　図６～図９は本発明の他の実施形態になるコンクリート基礎天端の施工方法を時系列で示す横断面図である。他の実施形態につき、前述した実施形態と共通する構成については同一の符号を付して説明を省略し、異なる構成について以下に説明する。 6 to 9 are cross-sectional views showing the construction method of the concrete foundation top end according to another embodiment of the present invention in time series. Regarding the other embodiments, the same reference numerals are given to the configurations common to the above-described embodiments, and the description thereof will be omitted, and different configurations will be described below.
　図６は、前述した図２に対応し、コンクリート基礎の根元側１１を構築し、少なくとも一方の側面１２を埋め戻した状態を示す。他の実施形態では、埋め戻し部１６の上面に鉄筋組２４を敷設する。鉄筋組２４の一部は、屈曲して下向きに延び、立ち上がり部１１ｗに埋設される。 FIG. 6 corresponds to FIG. 2 described above and shows a state in which the base side 11 of the concrete foundation is constructed and at least one side surface 12 is backfilled. In another embodiment, the reinforcing bar set 24 is laid on the upper surface of the backfill portion 16. A part of the reinforcing bar set 24 is bent and extends downward, and is embedded in the rising portion 11w.
　次に図７に示すように、根元側に天端型枠３２を取付固定する。図７は前述した図３に対応する。他の実施形態で使用される天端型枠３２は、平面部分３３の短手方向一方の側縁から垂下するように設けられる垂下部分３６をさらに有する。そして天端型枠３２をアンカーボルト２１に取付固定する工程において、垂下部分３６は根元側１１の一方の側面１２と接触する。 Next, as shown in FIG. 7, the top end formwork 32 is attached and fixed to the base side. FIG. 7 corresponds to FIG. 3 described above. The top end formwork 32 used in the other embodiment further has a hanging portion 36 provided so as to hang from one side edge in the short direction of the flat portion 33. In the process of attaching and fixing the top end formwork 32 to the anchor bolt 21, the hanging portion 36 contacts one side surface 12 of the base side 11.
　垂下部分３６と平面部分３３との境界には傾斜部分３７が形成される、平面部分３３と傾斜部分３７との交差角度は例えば１３５°である。垂下部分３６と傾斜部分３７との交差角度は例えば１３５°である。つまり平面部分３３と垂下部分３６がなす角度は９０°である。図７の天端型枠３２については後で詳細に説明する。 An inclined portion 37 is formed at the boundary between the drooping portion 36 and the flat portion 33. The intersection angle between the flat portion 33 and the inclined portion 37 is, for example, 135 °. The crossing angle between the hanging portion 36 and the inclined portion 37 is, for example, 135 °. That is, the angle formed by the plane portion 33 and the suspended portion 36 is 90 °. The top end formwork 32 of FIG. 7 will be described in detail later.
　次に図８に示すように、平面部分３３の短手方向他方の側縁から、平面部分３３の下方に天端コンクリート１４を充填する。同時に埋め戻し部１６の上面に土間コンクリート１７を打設して、鉄筋組２４を土間コンクリート１７の中に埋設する。垂下部分３６および傾斜部分３７は短手方向一方から天端コンクリート１４を押さえ、天端１８と側面１２を見栄えよく接続する。立ち上がり部分３５は、生コンクリートを押さえて、土間コンクリート１７の縁に段差面１９を形成する。図８は前述した図４に対応する。 Next, as shown in FIG. 8, top concrete 14 is filled below the flat portion 33 from the other side edge in the short direction of the flat portion 33. At the same time, soil concrete 17 is placed on the upper surface of the backfill portion 16, and the reinforcing bar set 24 is buried in the soil concrete 17. The suspended portion 36 and the inclined portion 37 hold the top end concrete 14 from one side in the short direction, and connect the top end 18 and the side surface 12 with a good appearance. The rising portion 35 presses the ready-mixed concrete to form a step surface 19 on the edge of the soil concrete 17. FIG. 8 corresponds to FIG. 4 described above.
　次に図９に示すように、上側ナットを緩め、天端型枠を脱枠して、これらをアンカーボルト２１から取り外す。天端コンクリート１４は根元側１１の上面１３に確りと付着する。図８に示す一度のコンクリート打設により、土間コンクリート１７は天端コンクリート１４と一体にされる。図９は前述した図５に対応する。傾斜部分３７（図８）の押さえ面によって、側面１２と天端１８との境界には面取り２０が形成される。 Next, as shown in FIG. 9, the upper nut is loosened, the top end formwork is removed, and these are removed from the anchor bolt 21. The top end concrete 14 firmly adheres to the upper surface 13 of the root side 11. The soil concrete 17 is united with the top concrete 14 by the concrete placement once shown in FIG. FIG. 9 corresponds to FIG. 5 described above. A chamfer 20 is formed at the boundary between the side surface 12 and the top end 18 by the pressing surface of the inclined portion 37 (FIG. 8).
　次に本発明で使用する天端型枠を説明する。 Next, the top formwork used in the present invention will be described.
　図１０は、図７および図８に示す天端型枠を示す平面図である。図１１は、図７および図８に示す天端型枠を示す横断面図であり、長手方向にみた状態を表す。図１２は、図７および図８に示す天端型枠を示す側面図である。なお図１０および図１２では、２枚の同じ天端型枠３２を長手方向に連結した状態を示す。天端型枠３２は、水平に支持される平面部分３３を少なくとも備え、平面部分３３の下面３３ｓで生コンクリートを押さえる。平面部分３３の下面３３ｓは、平坦に形成されるが一部に凹凸を含んでもよい。平面部分３３には、複数のアンカーボルト貫通孔３４と、複数の空気抜き孔３３ｈが設けられる。平面部分３３は図１０に示すように長方形の板である。なお空気抜き孔３３ｈおよびアンカーボルト貫通孔３４は同じ口径で、所定の配列パターンで配置されるとよい。これにより空気抜き孔３３ｈおよびアンカーボルト貫通孔３４は互いに兼用可能である。したがって前の施工現場でアンカーボルト貫通孔３４であった孔が、次の施工現場で空気抜き孔３３ｈになってもよいし、あるいは逆であってもよい。空気抜き孔３３ｈにより、コンクリートは下面３３ｓまで充填され、コンクリート基礎の天端に窪みなどの施工不良が生じない。空気抜き孔の内径は特に限定されず、空気抜き孔はアンカーボルト貫通孔３４よりも小さい径であってもよい。本実施形態では図１０および図１２に示すように、小さい径の空気抜き孔をさらに有する。 FIG. 10 is a plan view showing the top formwork shown in FIG. 7 and FIG. FIG. 11 is a cross-sectional view showing the top end formwork shown in FIGS. 7 and 8, and shows a state seen in the longitudinal direction. FIG. 12 is a side view showing the top end formwork shown in FIGS. 7 and 8. 10 and 12 show a state in which two identical top end molds 32 are connected in the longitudinal direction. The top end formwork 32 includes at least a flat portion 33 that is supported horizontally, and presses ready-mixed concrete on the lower surface 33 s of the flat portion 33. The lower surface 33 s of the flat portion 33 is formed flat, but may partially include irregularities. The plane portion 33 is provided with a plurality of anchor bolt through holes 34 and a plurality of air vent holes 33h. The flat portion 33 is a rectangular plate as shown in FIG. The air vent holes 33h and the anchor bolt through holes 34 have the same diameter and are preferably arranged in a predetermined arrangement pattern. Thereby, the air vent hole 33h and the anchor bolt through hole 34 can be used together. Therefore, the hole that was the anchor bolt through hole 34 at the previous construction site may become the air vent hole 33h at the next construction site, or vice versa. By the air vent hole 33h, the concrete is filled up to the lower surface 33s, and there is no construction failure such as a depression at the top end of the concrete foundation. The inner diameter of the air vent hole is not particularly limited, and the air vent hole may be smaller in diameter than the anchor bolt through hole 34. In this embodiment, as shown in FIG. 10 and FIG. 12, it further has an air vent hole with a small diameter.
　本実施形態の天端型枠３２は、図１１に示すように上面３３ｒおよび下面３３ｓを有する平面部分３３と、平面部分３３と所定の角度で交差する側面部分とを有する。側面部分は具体的には立ち上がり部分３５、傾斜部分３７、および垂下部分３６を含む。平面部分３３と側面部分は略同じ厚みである。各側面部分は、下面３３ｓから連続する押さえ面３５ｓ，３６ｓ，３７ｓを構成する。垂下部分３６は平面部分３３の短手方向一方縁に延設される。立ち上がり部分３５は平面部分３３の短手方向他方縁に延設される。 The top end formwork 32 of the present embodiment includes a flat surface portion 33 having an upper surface 33r and a lower surface 33s, and a side surface portion that intersects the flat surface portion 33 at a predetermined angle as shown in FIG. Specifically, the side portion includes a rising portion 35, an inclined portion 37, and a depending portion 36. The plane portion 33 and the side surface portion have substantially the same thickness. Each side surface portion constitutes pressing surfaces 35s, 36s, and 37s continuous from the lower surface 33s. The drooping portion 36 is extended to one edge of the flat portion 33 in the short direction. The rising portion 35 extends to the other edge of the flat portion 33 in the short direction.
　平面部分３３と側面部分の交差角度は、９０°を超え２７０°未満の範囲に含まれる。具体的には、垂下部分３６の押さえ面３６ｓが鉛直にされ、平面部分３３と垂下部分３６との境界に傾斜部分３７が設けられ、平面部分３３の下面３３ｓと傾斜部分３７の押さえ面３７ｓとの交差角度は９０°を超え１４０°未満の範囲に含まれる所定の角度である。本実施形態では平面部分３３の下面３３ｓと傾斜部分３７の押さえ面３７ｓとの交差角度が１３５°である。 The crossing angle between the plane portion 33 and the side surface portion is included in a range exceeding 90 ° and less than 270 °. Specifically, the pressing surface 36 s of the hanging portion 36 is made vertical, an inclined portion 37 is provided at the boundary between the flat portion 33 and the hanging portion 36, and the lower surface 33 s of the flat portion 33 and the pressing surface 37 s of the inclined portion 37 are Is a predetermined angle included in the range of more than 90 ° and less than 140 °. In the present embodiment, the intersection angle between the lower surface 33 s of the flat portion 33 and the pressing surface 37 s of the inclined portion 37 is 135 °.
　また垂下部分３６の押さえ面３６ｓと傾斜部分３７の押さえ面３７ｓとの交差角度も９０°を超え１４０°未満の範囲に含まれる所定の角度である。本実施形態では垂下部分３６の押さえ面３６ｓと傾斜部分３７の押さえ面３７ｓの交差角度が１３５°である。本実施形態は、垂下部分３６の押さえ面３６ｓが鉛直であるため、下面３３ｓと押さえ面３６ｓがなす交差角度が９０°になる。平面部分３３と立ち上がり部分３５との交差角度は２５０°以上２７０°未満の範囲に含まれる所定の角度である。 Also, the intersection angle between the pressing surface 36s of the hanging portion 36 and the pressing surface 37s of the inclined portion 37 is a predetermined angle included in the range of more than 90 ° and less than 140 °. In this embodiment, the crossing angle of the pressing surface 36s of the hanging portion 36 and the pressing surface 37s of the inclined portion 37 is 135 °. In this embodiment, since the pressing surface 36s of the hanging portion 36 is vertical, the crossing angle formed by the lower surface 33s and the pressing surface 36s is 90 °. The crossing angle between the plane portion 33 and the rising portion 35 is a predetermined angle included in a range of 250 ° or more and less than 270 °.
　図１０に示すように傾斜部分３７は平面部分３３に沿って延びる長方形の板である。図１２に示すように垂下部分３６も平面部分３３および傾斜部分３７と平行に延びる長方形の板である。また立ち上がり部分３５も平面部分３３に沿って延びる長方形の板である。平面部分３３の下面３３ｓ（図１１）は、前述した下側ナット（図６の符号２２）に水平に支持され、垂下部分３６の押さえ面３６ｓ（図１１）は鉛直にされる。 As shown in FIG. 10, the inclined portion 37 is a rectangular plate extending along the plane portion 33. As shown in FIG. 12, the hanging portion 36 is also a rectangular plate extending in parallel with the flat portion 33 and the inclined portion 37. The rising portion 35 is also a rectangular plate extending along the plane portion 33. The lower surface 33s (FIG. 11) of the flat portion 33 is horizontally supported by the aforementioned lower nut (reference numeral 22 in FIG. 6), and the pressing surface 36s (FIG. 11) of the hanging portion 36 is made vertical.
　平面部分３３および側面部分としての立ち上がり部分３５、垂下部分３６、および傾斜部分３７は一体に形成される。平面部分３３および側面部分の長手方向両端には、短手方向に延びる上向きのリブ３８がそれぞれ設けられる。各リブ３８は、立ち上がり部分３５と接続する。天端型枠３２は、図１０および図１２に示すように長手方向に複数枚連続して整列配置可能である。このとき一方の天端型枠３２のリブ３８と他方の天端型枠３２´のリブ３８´とを密着させて、互いに重なったリブ３８，３８´をクリップ３９で挟持するとよい。これにより、隣接する天端型枠３２，３２´同士を隙間なく接続する。 The flat portion 33 and the rising portion 35, the hanging portion 36, and the inclined portion 37 as side portions are integrally formed. Upward ribs 38 extending in the short direction are provided at both ends of the flat portion 33 and the side surface in the longitudinal direction. Each rib 38 is connected to the rising portion 35. As shown in FIG. 10 and FIG. 12, a plurality of the top end molds 32 can be aligned and arranged continuously in the longitudinal direction. At this time, the rib 38 of one top end mold 32 and the rib 38 ′ of the other top end mold 32 ′ may be brought into close contact with each other, and the ribs 38 and 38 ′ overlapped with each other may be sandwiched between the clips 39. Thereby, adjacent top end formwork 32, 32 'is connected without gap.
　リブ３８には例えば通し孔３８ｈを設けるとよい。通し孔３８ｈにはクリップ３９の軸が通され、クリップ３９はレバーのように通し孔３８ｈを中心として回動可能である。これにより作業者は、梃子の作用によって、小さな力でクリップ３９を２枚の重なったリブ３８，３８´に押し込んで挟んだり、あるいは引き上げて挟持を解除したりすることができる。複数枚の天端型枠３２において各長手方向端がクリップ３９によって連結されることにより、平面部分３３の下面３３ｓは長手方向に隙間なく連続する。そして図９に示すコンクリート基礎１０の天端１８を形成する。垂下部分３６の押さえ面３６ｓは、既設の根元側１１に押し当てられる。これにより天端１８を、根元側１１の側面１２に円滑に連続して形成することができる。立ち上がり部分３５の押さえ面３５ｓはコンクリート構造物、例えば土間コンクリート１７、の段差面１９を形成する。なお図示はしなかったが、長手方向に間隔を空けて複数のリブを設けることにより、平面部分と側面部分との接続箇所の剛性が向上する。 For example, a through hole 38h may be provided in the rib 38. The shaft of the clip 39 is passed through the through hole 38h, and the clip 39 is rotatable around the through hole 38h like a lever. As a result, the operator can push the clip 39 into the two overlapping ribs 38 and 38 ′ with a small force and pinch it with a small force, or lift it to release the pinching. By connecting the ends in the longitudinal direction of the plurality of top end molds 32 with the clips 39, the lower surface 33s of the flat portion 33 is continuous without any gap in the longitudinal direction. And the top end 18 of the concrete foundation 10 shown in FIG. 9 is formed. The pressing surface 36 s of the hanging portion 36 is pressed against the existing root side 11. Thereby, the top end 18 can be formed smoothly and continuously on the side surface 12 of the root side 11. The pressing surface 35 s of the rising portion 35 forms a step surface 19 of a concrete structure, for example, soil concrete 17. Although not shown, by providing a plurality of ribs at intervals in the longitudinal direction, the rigidity of the connection portion between the flat surface portion and the side surface portion is improved.
　垂下部分３６の押さえ面３６ｓは鉛直面であり、傾斜部分３７の押さえ面３７ｓは、平面部分３３の下面３３ｓおよび垂下部分３６の押さえ面３６ｓと例えば１３５°という鈍角で連続することから、天端１８と側面１２を円滑に接続する。また天端型枠の脱枠が容易になる。 The pressing surface 36s of the hanging portion 36 is a vertical surface, and the pressing surface 37s of the inclined portion 37 is continuous with the lower surface 33s of the flat surface portion 33 and the pressing surface 36s of the hanging portion 36 at an obtuse angle of, for example, 135 °. 18 and the side surface 12 are smoothly connected. Moreover, the top frame can be easily removed.
　以上、図面を参照してこの発明の実施の形態を説明したが、この発明は、図示した実施の形態のものに限定されない。図示した実施の形態に対して、この発明と同一の範囲内において、あるいは均等の範囲内において、種々の修正や変形を加えることが可能である。 The embodiment of the present invention has been described above with reference to the drawings, but the present invention is not limited to the illustrated embodiment. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.
　これまでの実施形態では、平面部分と２段階に交差する傾斜部分および垂下部分を有する天端型枠の例を示したが、図示しない変形例として傾斜部分を省略し、平面部分と垂下部分とを９０°を超え９９°以下の範囲に含まれる所定の角度で連続させてもよい。 In the embodiments so far, the example of the ceiling mold having the inclined portion and the hanging portion intersecting with the flat portion in two stages has been shown, but the inclined portion is omitted as a modification (not shown), and the flat portion, the hanging portion, May be continued at a predetermined angle included in the range of more than 90 ° and not more than 99 °.
　これまでの実施形態では、コンクリート基礎および天端型枠が水平方向に直線状に延びる実施形態を説明したが、本発明はこれに限られない。図示しない変形例として、コンクリート基礎が水平方向にＬ字状に折れ曲がって延びてもよい。また天端型枠も平面図においてＬ字状に折れ曲がって配列されてもよい。あるいは図示しない変形例として、コンクリート基礎が水平方向にＴ字状に延びてもよい。また天端型枠も平面図においてＴ字状に配列されてもよい。また天端型枠は、上述した図１０～図１２に示す直線形状として、建物外周の界壁を支持するコンクリート基礎に対応する直線形状と、建物内部の間仕切り壁を支持するコンクリート基礎に対応する直線形状がある。あるいは天端型枠は図示しない変形例として、建物の出入口の隅を形成するコンクリート基礎に対応するエンド形状と、建物の角部ないし隅部を形成するコンクリート基礎に対応する角部形状がある。 In the embodiments so far, the embodiments have been described in which the concrete foundation and the ceiling mold form extend linearly in the horizontal direction, but the present invention is not limited to this. As a modification (not shown), the concrete foundation may be bent in an L shape in the horizontal direction and extend. Further, the top end formwork may be bent and arranged in an L shape in the plan view. Or as a modification which is not illustrated, a concrete foundation may extend in the shape of a letter T horizontally. The top end formwork may also be arranged in a T shape in the plan view. The top formwork corresponds to the linear shape corresponding to the concrete foundation supporting the boundary wall on the outer periphery of the building and the concrete foundation supporting the partition wall inside the building as the linear shape shown in FIGS. 10 to 12 described above. There is a linear shape. Or as a modification which a ceiling end formwork does not illustrate, there are an end shape corresponding to a concrete foundation which forms a corner of an entrance of a building, and a corner shape corresponding to a concrete foundation which forms a corner or corner of a building.
　この発明になるコンクリート基礎天端の施工方法および天端型枠は、基礎工事において有利に利用される。 <Concrete foundation top construction method and top formwork according to the present invention are advantageously used in foundation construction.
　１０　コンクリート基礎、　　　１１　コンクリート基礎の根元側、
１１ｓ　根元側のスラブ、　　　１１ｗ　根元側の立ち上がり部、
１２　根元側の側面、　　　１３　根元側の上面、
１４　天端コンクリート、　　　１６　埋め戻し部、
１７　土間コンクリート、　　　１８　コンクリート基礎の天端、
１９　コンクリートの段差面、　　　２０　コンクリート基礎の面取り、
２１　アンカーボルト、　　　２１ｔ　雄ねじ部、
２２　下側ナット、　　　２３　上側ナット、　　　２４　鉄筋組、
３１　型枠、　　　３２　天端型枠、　　　３３　平面部分、
３３ｈ　空気抜き孔、　　　３３ｓ　平面部分の下面、
３４　アンカーボルト貫通孔、　　　３５　立ち上がり部分、
３６　垂下部分、　　　３７　傾斜部分、
３５ｓ，３６ｓ，３７ｓ　天端型枠の押さえ面、　　　３８　リブ、
３９　クリップ、　　　ＧＬ　地盤高、　　　ＴＬ　設計天端高。 10 concrete foundation, 11 the base side of the concrete foundation,
11s slab on the root side, 11w rising part on the root side,
12 Root side surface, 13 Root side top surface,
14 top concrete, 16 backfill,
17 Dough concrete, 18 Top edge of concrete foundation,
19 Stepped surface of concrete, 20 Chamfering of concrete foundation,
21 anchor bolt, 21t male thread,
22 lower nut, 23 upper nut, 24 rebar assembly,
31 formwork, 32 top formwork, 33 plane part,
33h Air vent hole, 33s Lower surface of plane part,
34 anchor bolt through hole, 35 rising part,
36 hanging part, 37 inclined part,
35 s, 36 s, 37 s The pressing surface of the top end formwork, 38 ribs,
39 clips, GL ground height, TL design top height.

Claims (8)

  1. 　コンクリート製の天端と、前記天端から上方へ突出する複数のアンカーボルトとを備えるコンクリート基礎において、前記天端を施工する方法であって、
    　前記アンカーボルトを含む前記コンクリート基礎の根元側を構築する工程と、
    　平面部分および前記平面部分に設けられる孔を有する天端型枠を準備し、前記孔に前記アンカーボルトを差し込み、前記天端型枠を前記根元側の上面と対向するよう前記アンカーボルトに取付固定する工程と、
    　前記天端型枠と前記根元側の上面との間に天端コンクリートを充填する工程と、
    　前記天端コンクリートの硬化後、前記天端型枠を取り外す工程とを備える、コンクリート基礎天端の施工方法。     In a concrete foundation comprising a concrete top and a plurality of anchor bolts protruding upward from the top, a method of constructing the top.
    Constructing a base side of the concrete foundation including the anchor bolt;
    A top end formwork having a flat part and a hole provided in the flat part is prepared, the anchor bolt is inserted into the hole, and the top formwork is fixedly attached to the anchor bolt so as to face the top surface on the root side. And a process of
    Filling the top end concrete between the top end formwork and the top side upper surface;
    A method for constructing a concrete foundation top end, comprising: removing the top end formwork after curing the top end concrete.
  2. 　前記アンカーボルトは、下側ナットおよび上側ナットと螺合し、
    　前記天端型枠を前記アンカーボルトに取付固定する工程において、前記天端型枠は前記下側ナットおよび前記上側ナットに挟まれる、請求項１に記載のコンクリート基礎天端の施工方法。     The anchor bolt is screwed with the lower nut and the upper nut,
    The construction method of a concrete foundation top end according to claim 1, wherein in the step of attaching and fixing the top end formwork to the anchor bolt, the top end formwork is sandwiched between the lower nut and the upper nut.
  3. 　前記根元側は前記上面の側縁から垂下する側面を有し、
    　前記天端型枠は、前記平面部分の側縁から垂下するように設けられる垂下部分をさらに有し、
    　前記天端型枠を前記アンカーボルトに取付固定する工程において、前記垂下部分は前記根元側の側面と接触する、請求項１または２に記載のコンクリート基礎天端の施工方法。     The root side has a side surface depending from a side edge of the upper surface,
    The top end formwork further includes a hanging portion provided to hang from the side edge of the planar portion,
    The construction method of a concrete foundation top end according to claim 1 or 2, wherein in the step of attaching and fixing the top end formwork to the anchor bolt, the suspended portion contacts the side surface on the root side.
  4. 　前記天端型枠は、前記垂下部分と前記平面部分との境界に傾斜部分をさらに有し、
    　前記天端型枠と前記根元側の上面との間に天端コンクリートを充填する工程において、前記傾斜部分は前記コンクリート天端の側縁に面取りを形成する、請求項３に記載のコンクリート基礎天端の施工方法。     The top end formwork further has an inclined part at the boundary between the hanging part and the flat part,
    4. The concrete foundation ceiling according to claim 3, wherein in the step of filling the top end concrete between the top end formwork and the top surface on the base side, the inclined portion forms a chamfer on a side edge of the concrete top end. End construction method.
  5. 　前記天端型枠は前記平面部分の側縁から立ち上がる立ち上がり部分をさらに有し、
    　前記天端型枠と前記根元側の上面との間に天端コンクリートを充填する工程において、前記立ち上がり部分は前記天端から立ち上がる段差面を形成する、請求項１～４のいずれかに記載のコンクリート基礎天端の施工方法。     The top end formwork further has a rising portion that rises from a side edge of the planar portion;
    5. The step of filling the top end concrete between the top end formwork and the upper surface on the base side, wherein the rising portion forms a stepped surface rising from the top end. Construction method for concrete foundation top.
  6. 　上面および下面を有し前記下面は平坦に形成される平面部分と、
    　前記平面部分に形成された複数のアンカーボルト貫通孔、および前記下面から連続する押さえ面を有し、前記下面から前記押さえ面までの角度が９０°を超え２７０°未満の範囲に含まれる所定の角度なすよう、前記平面部分と交差する側面部分とを備え、
    　前記アンカーボルト貫通孔はコンクリート基礎のアンカーボルトを通され、
    　前記下面はコンクリート基礎の天端を形成し、
    　前記押さえ面はコンクリートを押さえる、天端型枠。     A planar portion having an upper surface and a lower surface, the lower surface being formed flat;
    A plurality of anchor bolt through holes formed in the planar portion, and a pressing surface continuous from the lower surface, and an angle from the lower surface to the pressing surface is in a range of more than 90 ° and less than 270 ° A side portion intersecting with the plane portion so as to form an angle,
    The anchor bolt through hole is passed through an anchor bolt of a concrete foundation,
    The lower surface forms the top of a concrete foundation;
    The pressing surface is a top formwork that holds concrete.
  7. 　前記平面部分は長方形の板であり、
    前記平面部分の長手方向端部には、短手方向に延びる上向きのリブが形成され、
    　重なり合う前記リブを挟持するクリップをさらに備える、請求項６に記載の天端型枠。     The planar portion is a rectangular plate;
    An upward rib extending in the lateral direction is formed at the longitudinal end of the planar portion,
    The top formwork according to claim 6, further comprising a clip for sandwiching the overlapping ribs.
  8. 　前記側面部分は、長方形に形成された前記平面部分に沿って同じ長さで延びる板であり、
    　前記リブは前記平面部分の長手方向端部から前記側面部分の長手方向端部まで形成される、請求項７に記載の天端型枠。     The side surface portion is a plate extending with the same length along the flat surface portion formed in a rectangle,
    The top end formwork according to claim 7, wherein the rib is formed from a longitudinal end of the planar portion to a longitudinal end of the side portion.
PCT/JP2016/069260 2015-09-28 2016-06-29 Method for constructing concrete foundation top end, and top end form WO2017056602A1 (en)

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TWI738134B (en) * 2019-11-29 2021-09-01 陳鴻椿 Formwork for construction

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JPS5397208A (en) * 1977-02-05 1978-08-25 Eidai Co Ltd Method of building cloth foudation
JPS58156946U (en) * 1982-04-15 1983-10-20 ナショナル住宅産業株式会社 Basic finishing formwork
JPH0359223A (en) * 1989-07-25 1991-03-14 Kazuhiko Yamazaki Foundation constructing method for reinforced concrete building
JPH07173933A (en) * 1992-02-28 1995-07-11 Hiroo Koyama Base formwork of foundation concrete
JPH11190130A (en) * 1997-12-26 1999-07-13 Kubota House Corp Footing top end leveler jig
JP2002348883A (en) * 2001-05-29 2002-12-04 Nippon Steel Corp Structure of foundation and construction method thereof
JP2006083564A (en) * 2004-09-15 2006-03-30 Sogo Concrete Service:Kk Foundation constructing method, pressurizing device for use in the constructing method, and continuous footing or mat foundation constructed by the constructing method
JP2010216196A (en) * 2009-03-19 2010-09-30 Daiwa House Industry Co Ltd Anchor bolt installation method for continuous footing, and anchor bolt-tool set

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5397208A (en) * 1977-02-05 1978-08-25 Eidai Co Ltd Method of building cloth foudation
JPS58156946U (en) * 1982-04-15 1983-10-20 ナショナル住宅産業株式会社 Basic finishing formwork
JPH0359223A (en) * 1989-07-25 1991-03-14 Kazuhiko Yamazaki Foundation constructing method for reinforced concrete building
JPH07173933A (en) * 1992-02-28 1995-07-11 Hiroo Koyama Base formwork of foundation concrete
JPH11190130A (en) * 1997-12-26 1999-07-13 Kubota House Corp Footing top end leveler jig
JP2002348883A (en) * 2001-05-29 2002-12-04 Nippon Steel Corp Structure of foundation and construction method thereof
JP2006083564A (en) * 2004-09-15 2006-03-30 Sogo Concrete Service:Kk Foundation constructing method, pressurizing device for use in the constructing method, and continuous footing or mat foundation constructed by the constructing method
JP2010216196A (en) * 2009-03-19 2010-09-30 Daiwa House Industry Co Ltd Anchor bolt installation method for continuous footing, and anchor bolt-tool set

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI738134B (en) * 2019-11-29 2021-09-01 陳鴻椿 Formwork for construction

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