Date: May 22, 2020
`
`To whom it may concern:
`
`This is to certify that the attached translation from Japanese and into English is an accurate
`representation of the documents received by this office.
`
`The document is designated as:
`Japanese Patent Number: P2002-115324A
`•
`
`Alexander Danesis, Project Manager in this company, attests to the following:
`
`“To the best of my knowledge, the aforementioned documents are a true, full and accurate translation
`of the specified documents.”
`
`_________________________________
`Signature of Alexander Danesis
`
`www.morningsideIP.com
`
`
` info@morningsideIP.com
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`CERT-05, 2019-Mar-21, V2
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`1
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`TRSA 1007
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`(19) Japan Patent Office (JP)
`
`
`(12) Japanese Unexamined Patent
`Application Publication (A)
`
`
`
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`(11) Japanese Unexamined Patent
`Application Publication Number
`
`2002-115324
`(P2002-115324A)
`
`(51) Int. Cl. 7
`
`ID Code
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` FI
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` Theme Code (Reference)
`
` E04B 1/24
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` E02D 27/00
`
` E04B 1/24 R
` E02D 27/00 Z
` D
`
`2D046
`
`Request for examination: Not yet requested: Number of claims: 14 Online (Total of 12 pages)
`
`
`
`(43) Publication date April 19, 2002
`
`(21) Application number
`
`2000-310345 (P2000-310345)
`
`(71) Applicant
`
`(22) Date of application
`
`October 11, 2000
`
`
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`
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`(54) [TITLE OF THE INVENTION]
`Footer Unit, Column-Integrated Column Footer Securing
`Base Structure Using Said Column Footer Unit, and
`Construction Method Thereof
`(57) [ABSTRACT]
`[PROBLEM]
`The technological issue is that of developing a column
`beam junction structure in a column-integrated column
`footer securing foundation structure with superior overall
`performance.
`[MEANS FOR RESOLUTION]
`In a column member wherein a diaphragm 11 is provided
`transversely in a lower portion of a column 10 and a base
`plate 12 is provided at a bottom end portion of the column
`10, the diaphragm 11 and the base plate 12 have a shape
`that, in the plan view, is pulled out widely in the direction
`in which an underground beam 2 is connected, and a web
`13 is provided between the diaphragm 11 and the base plate
`12 in this wide portion, where, in a column footer unit 1
`that includes the column material, a wide part that
`protrudes from the column material is structured as a part
`that connects to the underground beam 2, enabling the
`underground beam 2 to be joined to any location of the
`wide portion.
`
`
`
`594144234
`SANFOUNDATION CORP.
`1-14-20 MIYATAKE, SHIZUOKA CITY,
`SHIZUOKA PREFECTURE
`
`MASUDA, Toshio
`6-15-6 Kutsunoya, Aoi-ku, Shizuoka City,
`Shizuoka Prefecture
`
`100086438
`Patent Attorney HIGASHIYAMA, Takahiko
`
`(72) Inventor
`
`(74) Agent
`
`F Terms (Reference)
`
`2D046 AA00 AA15
`
`10: Column
`11: Diaphragm
`12: Base Plate
`13: Web
`2: Underground Beam
`
`
`2
`
`

`

`[PATENT CLAIMS]
`[CLAIM 1]
`A column footer unit wherein, in a column member
`wherein a diaphragm is provided transversely in a lower
`portion of the column and a base plate is provided in a
`bottom end portion of the column:
`the diaphragm and base plate have a shape that, in the
`plan view, is pulled out widely in the direction in which an
`underground beam is connected; and
`a web is provided between the diaphragm and the base
`plate in the wide portion.
`[CLAIM 2]
`A column footer unit as set forth in claim 1, wherein:
`a hole for insertion of an underground pile bar
`arrangement is formed in the diaphragm and base plate.
`[CLAIM 3]
`A column footer unit as set forth in claim 1 or claim 2,
`wherein:
`a cross-sectional shape formed by the diaphragm, the
`base plate, and the web includes a cross-sectional shape of
`an underground beam
`[CLAIM 4]
`A column footer unit as set forth in claim 1, 2, or 3,
`wherein:
`rebar is welded to a top face of the diaphragm and/or a
`bottom surface of the base plate.
`[CLAIM 5]
`A column-integrated column footer securing foundation
`structure that uses a column footer unit wherein, in a
`structure wherein a column footer beam frame that is a steel
`framework is formed through connecting an underground
`beam to a column that is standing in a footer excavation
`that is excavated in advance and wherein concrete is poured
`into the footer excavation so that the lower portion of the
`column structures a portion of the foundation structure:
`a column footer unit as set forth in claim 1, 2, 3, or 4 is
`used in the foundation structure, and in a state wherein an
`end portion of the underground beam is in contact with an
`end portion of the diaphragm, base plate, and web in the
`column footer unit, the column footer unit and the
`underground beam are connected integrally.
`[CLAIM 6]
`A column-integrated column footer securing foundation
`structure that uses a column footer unit, as set forth in claim
`5, wherein:
`through forming a state wherein an underground pile bar
`arrangement that protrudes from a bottom surface of the
`footer excavation is inserted into a hole that is formed in
`the diaphragm and base plate, concrete that will be in a
`state that will be filled between the diaphragm and base
`plate, will be integrated into a single unit.
`[CLAIM 7]
`A column-integrated column footer securing foundation
`structure that uses a column footer unit, as set forth in claim
`5 or 6, wherein:
`the connection between the diaphragm, base plate, and
`web and the underground beam is carried out through a
`high-strength bolt junction.
`[CLAIM 8]
`A column-integrated column footer securing foundation
`structure that uses a column footer unit, as set forth in claim
`5, 6, or 7, wherein:
`
`the width of concrete in the vicinity of the underground
`beam that is connected to the column footer unit is
`narrower than the width of concrete in the vicinity of the
`column footer unit.
`[CLAIM 9]
`A column-integrated column footer securing foundation
`structure that uses a column footer unit, as set forth in claim
`5, 6, 7, or 8, wherein:
`the center of the underground beam is eccentrically
`aligned with the center of the column footer unit.
`[CLAIM 10]
`A construction method for a column-integrated column
`footer securing foundation structure that uses a column
`footer unit wherein, in construction of a structure wherein a
`column footer beam frame that is a steel framework is
`formed through connecting an underground beam to a
`column that is standing in a footer excavation that is
`excavated in advance and wherein concrete is poured into
`the footer excavation so that the lower portion of the
`column structures a portion of the foundation structure:
`a column footer unit as set forth in claim 1, 2, 3, or 4 is
`used in the foundation structure, and in a state wherein an
`end portion of the underground beam is in contact with an
`end portion of the diaphragm, base plate, and web in the
`column footer unit, the column footer unit and the
`underground beam are connected integrally.
`[CLAIM 11]
`A construction method for a column-integrated column
`footer securing foundation structure that uses a column
`footer unit, as set forth in claim 10, wherein:
`through forming a state wherein an underground pile bar
`arrangement that protrudes from a bottom surface of the
`footer excavation is inserted into a hole that is formed in
`the diaphragm and base plate, concrete that will be in a
`state that will be filled between the diaphragm and base
`plate, will be integrated into a single unit.
`[CLAIM 12]
`A construction method for a column-integrated column
`footer securing foundation structure that uses a column
`footer unit, as set forth in claim 10 or 11, wherein:
`the connection between the diaphragm, base plate, and
`web and the underground beam is carried out through a
`high-strength bolt junction.
`[CLAIM 13]
`A construction method for a column-integrated column
`footer securing foundation structure that uses a column
`footer unit, as set forth in claim 10, 11, or 12, wherein: the
`width of concrete in the vicinity of the underground beam
`that is connected to the column footer unit is narrower than
`the width of concrete in the vicinity of the column footer
`unit.
`[CLAIM 14]
`A construction method for a column-integrated column
`footer securing foundation structure that uses a column
`footer unit, as set forth in claim 10, 11, 12, or 13, wherein:
`the center of the underground beam is eccentrically
`aligned with the center of the column footer unit.
`[DETAILED EXPLANATION OF THE INVENTION]
`[0001]
`[FIELD OF TECHNOLOGY OF THE PRESENT INVENTION]
`The present invention relates primarily to a foundation
`structure that is suitable as a foundation for a building such
`
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`3
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`

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`as a steel-frame home, and, in particular, relates to a
`column footer unit, a column-integrated column footer
`securing foundation structure that uses this column footer
`unit, and to a construction method thereof, that enables
`design of a foundation structure that improves the strength
`of a building through integrating the column and an
`underground beam, where the design has freedom in
`response to the state of the construction site, and where no
`reduction in strength is caused by the column beam
`junction portion.
`[0002]
`[BACKGROUND OF THE INVENTION]
`Conventionally, in foundations for buildings and
`structures, a variety of shapes are selected depending on,
`for example, the load that must be borne, and the state of
`the foundation surface, in addition to the environment of
`the construction site, and the like, and, broadly speaking, a
`footer foundation, an independent foundation, or a solid
`foundation, or the like, is selected for use. However,
`because all of these use rebar as a member that bears loads
`primarily, time and effort is required in constructing the bar
`arrangement of the rebar, and accurately setting up the
`anchor bolts used for securing the structural framework that
`is to be provided on the foundation is difficult. In the case
`of a footer foundation or an independent foundation, it is
`necessary for the excavation depth of the construction site,
`the so-called footer excavation depth dimension, to be deep.
`Additionally, when having the excavation depth be great, it
`has been necessary to excavate over a broad width (for
`example, a range that has a surplus of several hundred
`millimeters, or more, from the side face of the foundation),
`in consideration of ease of operations in the related steel
`frame bar arrangement, and in the assembly and removal of
`the concrete mold thereafter. This not only produces a large
`burden in terms of time and effort in the excavation
`operations and in handling of the surplus soil, but
`excavation for foundation construction may cause problems
`with owners of adjacent properties when, for example, the
`foundation is to be tight against the boundary with the
`adjacent property. Moreover, to some degree a lengthy
`construction lead time is unavoidable because it is not
`possible to move on to the steel framing until after the
`foundation has been entirely completed, through
`completion of curing of the concrete.
`[0003]
`Given this background, the present inventor has applied
`for a plurality of patents, including Japanese Patent
`2813605, "Foundation for Structure, and Construction
`Method Thereof." Formed steel is used for a portion of the
`strength members of the foundations in these, so
`construction efficiency is good and anchor bolts can be set
`accurately, and, additionally, the depth of the foundation
`can be kept shallow, enabling the footer depth dimension to
`be shallow and enabling the excavation to be of narrow
`width, thus achieving a solution to the problem areas
`described above.
`[0004]
`Note that, among the patent applications by the present
`inventor, the invention according to Japanese Unexamined
`Patent Application Publication H9-151463, "Column-
`Integrated Column Footer Securing Foundation Structure
`and Construction Method Thereof," relates to a foundation
`
`structure wherein a column and an underground beam are
`integrated together, where a lower portion of the column
`structures a portion of the foundation, thus enabling an
`improvement in the strength of the building, and, through
`the ability to move on to the steel framing even prior to
`entirely completing the foundation through completion of
`curing of the concrete, the construction lead time can be
`shortened, contributing greatly to improving construction
`quality and reducing building costs.
`[0005]
`[TECHNOLOGICAL ISSUE TO BE DEVELOPED]
`The present invention was created to contribute to the
`technology for structuring foundations wherein, as
`described above, columns and underground beams are
`integrated together, where, in addition to improving this
`technology, the technological issue is that of developing a
`column beam junction structure in a column-integrated
`column footer securing foundation structure that is novel
`and that has overall superior performance that enables an
`achievement an improvement in reliability in terms of
`strength, and an expansion in the freedom of design.
`[0006]
`[MEANS FOR SOLVING THE PROBLEM]
`That is, in the column footer unit set forth in claim 1, in a
`column member wherein a diaphragm is provided
`transversely in a lower portion of the column and a base
`plate is provided in a bottom end portion of the column: the
`diaphragm and base plate have a shape that, in the plan
`view, is pulled out widely in the direction in which an
`underground beam is connected; and a web is provided
`between the diaphragm and the base plate in the wide
`portion. Given this invention, the column footer unit that
`includes the column member is structured with the wide
`part, which protrudes from the column member, as the part
`that connects the underground beam, thus enabling the
`underground beam to be joined to any location of the wide
`portion.
`[0007]
`In the column footer unit as set forth in claim 2, in
`addition to the requirements set forth above: a hole for
`insertion of an underground pile bar arrangement is formed
`in the diaphragm and base plate. This invention enables the
`column footer unit to be secured to an anchor bolt that
`protrudes from the footer excavation, and also enables the
`concrete that is to be filled between the diaphragm and the
`base plate to be integrated together after pouring of the
`concrete.
`[0008]
`Moreover, in the column footer unit as set forth in claim
`3, in addition to the requirements set forth above: a cross-
`sectional shape formed by the diaphragm, the base plate,
`and the web includes a cross-sectional shape of an
`underground beam. This invention not only enables the
`connection between the column footer unit and the
`underground beam to be carried out accurately and reliably,
`but also enables transmission of forces between the column,
`the diaphragm, and the base plate, and the underground
`beam to be clear, thus making it possible to prevent brittle
`fracturing of the column footer unit.
`[0009]
`Moreover, in the column footer unit as set forth in claim
`4, in addition to the requirements set forth above: rebar is
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`4
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`

`

`welded to a top face of the diaphragm and/or a bottom
`surface of the base plate. This structure prevents cracking
`of the upper portion and side face of the concrete by the top
`rebar, and enables the bottom rebar to function as the
`foundation beam bottom foundation reinforcement, and
`further enables structuring of a unit that can integrate
`together the concrete through anchor bolts and rebar.
`[0010]
`Additionally, in the column-integrated column footer
`securing foundation structure that uses a column footer unit,
`as set forth in claim 5, in a structure wherein a column
`footer beam frame that is a steel framework is formed
`through connecting an underground beam to a column that
`is standing in a footer excavation that is excavated in
`advance and wherein concrete is poured into the footer
`excavation so that the lower portion of the column
`structures a portion of the foundation structure: a column
`footer unit as set forth in claim 1, 2, 3, or 4 is used in the
`foundation structure, and in a state wherein an end portion
`of the underground beam is in contact with an end portion
`of the diaphragm, base plate, and web in the column footer
`unit, the column footer unit and the underground beam are
`connected integrally. In this invention, the location of the
`connection with the underground beam in the column
`footer unit is the end portion of the diaphragm, base plate,
`and web, and thus the transmission of force between the
`column footer unit in the underground beam is clear,
`enabling prevention of brittle fracturing of the column
`footer unit. Moreover, the location of connection for the
`underground beam can be selected through use of an
`arbitrary position, in the width direction of the wide portion,
`of the position of the web in the column footer unit.
`[0011]
`Moreover, in the column-integrated column footer
`securing foundation structure that uses a column footer unit,
`as set forth in claim 6, in addition to the requirements set
`forth in claim 5, through forming a state wherein an
`underground pile bar arrangement that protrudes from a
`bottom surface of the footer excavation is inserted into a
`hole that is formed in the diaphragm and base plate,
`concrete that will be in a state that will be filled between
`the diaphragm and base plate, will be integrated into a
`single unit. This invention enables combination of
`underground piles, or the like, and the column-integrated
`column footer securing foundation structure, and also
`prevents cracking of the concrete.
`[0012]
`Moreover, in the column-integrated column footer
`securing foundation structure that uses a column footer unit,
`as set forth in claim 7, in addition to the requirements set
`forth in claim 5 or 6, the connection between the diaphragm,
`base plate, and web and the underground beam is carried
`out through a high-strength bolt junction. This invention
`enables reduced operating time when compared to joining
`through conventional welding, and further prevents causing
`a reduction in strength due to the effect of heat.
`[0013]
`Moreover, in the column-integrated column footer
`securing foundation structure that uses a column footer unit,
`as set forth in claim 8, in addition to the requirements set
`forth in claim 5, 6, or 7, the width of concrete in the
`vicinity of the underground beam that is connected to the
`
`column footer unit is narrower than the width of concrete in
`the vicinity of the column footer unit. This invention
`enables the shape of the foundation to be compatible with
`the state of the construction site.
`[0014]
`Moreover, in the column-integrated column footer
`securing foundation structure that uses a column footer unit,
`as set forth in claim 9, in addition to the requirements set
`forth in claim 5, 6, 7, or 8, the center of the underground
`beam is eccentrically aligned with the center of the column
`footer unit. This invention enables the shape of the
`foundation to be compatible with the state of the
`construction site.
`[0015]
`Additionally, in the construction method for a column-
`integrated column footer securing foundation structure that
`uses a column footer unit, as set forth in claim 10, in
`construction of a structure wherein a column footer beam
`frame that is a steel framework is formed through
`connecting an underground beam to a column that is
`standing in a footer excavation that is excavated in advance
`and wherein concrete is poured into the footer excavation
`so that the lower portion of the column structures a portion
`of the foundation structure: a column footer unit as set forth
`in claim 1, 2, 3, or 4 is used in the foundation structure, and
`in a state wherein an end portion of the underground beam
`is in contact with an end portion of the diaphragm, base
`plate, and web in the column footer unit, the column footer
`unit and the underground beam are connected integrally. In
`this invention, the location of the connection with the
`underground beam in the column footer unit is the end
`portion of the diaphragm, base plate, and web, and thus the
`transmission of force between the column footer unit in the
`underground beam is clear, enabling prevention of brittle
`fracturing of the column footer unit. Moreover, the location
`of connection for the underground beam can be selected
`through use of an arbitrary position, in the width direction
`of the wide portion, of the position of the web in the
`column footer unit.
`[0016]
`Moreover, in the construction method for a column-
`integrated column footer securing foundation structure that
`uses a column footer unit, as set forth in claim 11, in
`addition to the requirements set forth in claim 10, through
`forming a state wherein an underground pile bar
`arrangement that protrudes from a bottom surface of the
`footer excavation is inserted into a hole that is formed in
`the diaphragm and base plate, concrete that will be in a
`state that will be filled between the diaphragm and base
`plate, will be integrated into a single unit. This invention
`enables combination of underground piles, or the like, and
`the column-integrated column footer securing foundation
`structure, and also prevents cracking of the concrete.
`[0017]
`Moreover, in the construction method for a column-
`integrated column footer securing foundation structure that
`uses a column footer unit, as set forth in claim 12, in
`addition to the requirements set forth in claim 10 or 11, the
`connection between the diaphragm, base plate, and web and
`the underground beam is carried out through a high-
`strength bolt junction. This invention enables reduced
`operating time when compared to joining through
`
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`5
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`

`

`conventional welding, and further prevents causing a
`reduction in strength due to the effect of heat.
`[0018]
`Moreover, in the construction method for a column-
`integrated column footer securing foundation structure that
`uses a column footer unit, as set forth in claim 13, in
`addition to the requirements set forth in claim 10, 11, or 12,
`the width of concrete in the vicinity of the underground
`beam that is connected to the column footer unit is
`narrower than the width of concrete in the vicinity of the
`column footer unit. This invention enables the shape of the
`foundation to be compatible with the state of the
`construction site.
`[0019]
`Moreover, in the construction method for a column-
`integrated column footer securing foundation structure that
`uses a column footer unit, as set forth in claim 14, in
`addition to the requirements set forth in claim 10, 11, 12, or
`13, the center of the underground beam is eccentrically
`aligned with the center of the column footer unit. This
`invention enables the shape of the foundation to be
`compatible with the state of the construction site. Given
`this, solutions to the problems described above are
`achieved by means of the matters described in each of these
`claims.
`[0020]
`[EMBODIMENTS OF THE INVENTION]
`The present invention will be explained in detail below
`based on the illustrated embodiments. In this explanation,
`first a column footer unit 1 and the structure of a column-
`integrated column footer securing foundation structure S
`that uses the column footer unit 1 will be explained,
`followed by an explanation of a construction method for a
`column-integrated footer securing foundation structure S
`that uses the column footer unit 1. The column-integrated
`column footer securing foundation structure S according to
`the present invention is summarized as follows. First, in the
`building site, an underground beam 2 is connected to a
`column footer unit 1 that stands in a footer excavation 6
`that has been excavated in advance, to form a column
`footer beam frame F that is a steel framework. Moreover,
`through pouring concrete 7 into the footer excavation 6, the
`concrete 7 and the column footer beam frame F are
`integrated together into a single unit, to form a column-
`integrated column footer securing foundation structure S
`wherein a lower portion of the column footer unit 1
`structures a portion of the foundation structure.
`[0021]
`The column-integrated column footer securing
`foundation structure S will be explained in detail below.
`Explaining the column unit 1, first, as an example of this,
`as illustrated in FIG. 3, is a column member wherein the
`lower portion of a column 10 that uses a square steel beam
`is cut off to divide into an upper column 10a and a lower
`column 10b, where a diaphragm 11 is provided transversely
`between the upper column 10a and the lower column 10b,
`and, additionally, a base plate 12 is provided on the bottom
`end portion of the lower column 10b.
`[0022]
`The diaphragm 11 and the base plate 12 are plate
`materials that are identical in the planar shapes thereof, and
`holes 11a, 12a, and 12b, for insertion of an underground
`
`pile bar arrangement 8A and an anchor bolt 9, described
`below, are formed in appropriate locations therein.
`Moreover, the diaphragm 11 and base plate 12, as
`described below, have a shape that, in the plan view, is
`pulled out widely in the direction in which the underground
`beam 2 is connected, where a web 13 is provided between
`the diaphragm 11 and the base plate 12 in the wide portion.
`Note that here the wide portion means that the width
`dimension of the diaphragm 11 and the base plate 12 is
`longer than the width dimension of the column 10.
`Moreover, the direction in which the underground beam 2
`is connected is determined depending on the location
`wherein the column footer unit 1 is installed, where, in this
`embodiment, it may be from the directions of two
`perpendicular faces of the column 10, as depicted in FIG. 4
`(a), the directions of two opposing faces of the column 10
`as depicted in FIG. 4 (b), or the directions of three faces of
`column 10, as depicted in FIG. 4 (c). Of course,
`underground beams 2 may also be connected in the
`directions of four faces of the column 10.
`[0023]
`Additionally, the cross-sectional shape formed by the
`diaphragm 11, the base plate 12, and the web 13 includes
`the cross-sectional shape of the underground beam 2. Here
`inclusion of the cross-sectional shape of the underground
`beam 2 means that the cross-sectional shape formed by the
`diaphragm 11, the base plate 12, and the web 13 either
`matches the cross-sectional shape of the underground beam
`2, or the lengths of the diaphragm 11 and base plate 12 are
`longer than the top flange 21 and the bottom flange 22 of
`the underground beam 2.
`[0024]
`Moreover, a top rebar 14 is welded to the top face of the
`diaphragm 11, and, on the other hand, a bottom rebar 15 is
`welded to the bottom surface of the base plate 12. Note that
`the top rebar 14 and the bottom rebar 15 may use binding
`wire 16 or may be welded so that the rebar will be welded
`to the diaphragm 11 and base plate 12 in a combination in
`the shape of a # sign, with an appropriate pitch of, for
`example, about 12 mm. The structure of the column footer
`unit 1 is formed as described above, where the welding of
`the column 10, the diaphragm 11, the base plate 12, the
`web 13, the top rebar 14, and the bottom rebar 15 is carried
`out in advance in a factory, and transportation to the
`construction site is in the state wherein the column footer
`unit 1 has been formed.
`[0025]
`Explaining the underground beam 2 next, shaped steel
`such as, for example, H-shaped steel or I-shaped steel, is
`used, where a web 23 is provided, so as to be perpendicular,
`between a top flange 21 and a bottom flange 22. Note that
`instead a lattice beam that includes a lattice in the web 23
`may be used for the underground beam 2.
`[0026]
`Moreover, as an example of the underground beam 2,
`there is that wherein top rebar 24 and bottom rebar 25,
`which are similar to the top rebar 14 and the bottom rebar
`15 in the column footer unit 1, are secured through welding
`to the top flange 21 and the bottom flange 22.
`[0027]
`Additionally, the column footer beam frame F frame
`member is structured through assembly of the underground
`
`
`
`
`
`
`6
`
`

`

`beam 2 to the column footer unit 1, wherein a state wherein
`end portions of the top flange 21, the bottom flange 22, and
`the web 23 of the underground beam 2 are in contact with
`end portions of the diaphragm 11, the base plate 12, and the
`web 13 in the column footer unit 1, splices 3 are applied
`from both sides of these, and the column footer unit 1 and
`the underground beam 2 are connected integrally through
`the use of bolt nuts 5 that apply high-strength bolts.
`[0028]
`Note that anchor bolts 9 are embedded in advance, as
`depicted in FIG. 2, in the bottom surface of the footer
`excavation 6 in which the column footer unit 1 is stood, and
`an underground pile bar arrangement 8A of underground
`piles 8 is placed in a state wherein they protrude from the
`bottom surface of the footer excavation 6.
`[0029]
`Given this, concrete 7 is poured into the footer
`excavation 6 and when the curing thereof has been
`completed, a column-integrated column footer securing
`foundation structure S wherein the concrete 7 and the
`column footer beam frame F are integrated into a single
`unit, and wherein the lower portion of the column footer
`unit 1 structures a portion of the foundation structure, is
`formed. In this column-integrated column footer securing
`foundation structure S, focusing particularly on the part of
`the column footer unit 1, the state is one wherein the
`underground pile bar arrangement 8A is inserted into holes
`11a and 12a in the diaphragm 11 and the base plate 12, as
`depicted in FIG. 2 (b), and thus the concrete 7 that is in a
`state wherein it is filled between the diaphragm 11 and the
`base plate 12, is integrated into a single unit.
`[0030]
`The construction method for the column-integrated
`column footer securing foundation structure that uses the
`column footer unit according to the present invention will
`be explained in detail next.
`[PROCESSING AT THE FACTORY]
`In order to structure the column-integrated column footer
`securing foundation structure S according to the present
`invention, preferably the structural members thereof are
`processed in advance in factories, where through such
`processing, the operations at the construction site can be
`simplified, and one is freed from the frustration of the so-
`called "back and forth operations," wherein one must travel
`many times between the building site and the factory,
`where the foundation construction can be completed
`through a single multifunctional worker. Note that that
`which is subject to processing in the factory is the column
`footer unit 1 and the underground beam 2, and this
`processing will be explained below.
`[0031]
`(1) PREPARATION OF THE COLUMN FOOTER UNIT
`(REFERENCING FIG. 3)
`The processing for the column footer unit 1 is that of
`first cutting off the lower portion of the column 10, which
`uses a square steel pipe, to separate into an upper column
`10a and a lower column 10b, welding the diaphragm 11
`transversely between the upper column 10a and the lower
`column 10b, and then welding the bottom end portion of
`the lower column 10b to the base plate 12. Moreover, the
`web 13 is welded between the diaphragm 11 and the base
`plate 12 at the part in the diaphragm 11 and the base plate
`
`12 that, in the plan view, is pulled out to be wide in the
`direction in which the underground beam 2 is connected.
`[0032]
`A plurality of holes 11a is formed in the diaphragm 11 in
`the vicinity of the column 10, and, on the other hand, a
`plurality of holes 12a is formed in the base plate 12 in the
`same locations as the holes 11a in the diaphragm 11, and,
`additionally, a hole 12b is formed in the wide part as well,
`for securing the column footer unit 1 to the footer
`excavation 6. In the web 13 as well, a hole 13a is provided
`for attachment of the underground beam 2.
`[0033]
`Bottom rebars 15 that are connected in the form of a #
`sign, through binding wire, are assembled in advance
`through welding to the bottom surface of the base plate 12.
`[0034]
`(2) PREPARATION OF THE UNDERGROUND BEAM
`(REFERENCING FIG. 3)
`The processing of the underground beam 2 is that bolt
`holes 21a, 22a, and 23a, for attaching to the column footer
`unit 1, are formed in the top flange 21, the bottom flange 22,
`and the web 23, after cutting the steel materials to
`appropriate dimensions. Following this, the bottom rebar