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JP6944776B2 - Repair method - Google Patents
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JP6944776B2 - Repair method - Google Patents

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JP6944776B2
JP6944776B2 JP2016215571A JP2016215571A JP6944776B2 JP 6944776 B2 JP6944776 B2 JP 6944776B2 JP 2016215571 A JP2016215571 A JP 2016215571A JP 2016215571 A JP2016215571 A JP 2016215571A JP 6944776 B2 JP6944776 B2 JP 6944776B2
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repair
existing
columns
existing building
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JP2018071289A (en
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忠史 松本
忠史 松本
信行 柳澤
信行 柳澤
哲 日下
哲 日下
河合　哲夫
哲夫 河合
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Takenaka Corp
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Description

本発明は、改修方法に関する。 The present invention relates to a repair method.

既存建物の改修においては、新たに空間を形成するために柱や梁を撤去する場合がある。柱や梁を撤去する場合、既存躯体に何らかの補強工事が必要になる。 In the renovation of an existing building, columns and beams may be removed to form a new space. When removing columns and beams, some kind of reinforcement work is required for the existing skeleton.

特許文献１には、建物改築方法に関する技術が開示されている。この先行技術では、既存建物の所定階の床体を除去すると共に所定階の一つ下の階層の床体を補強することで、所定階と下階とを一体空間にしている。 Patent Document 1 discloses a technique relating to a building renovation method. In this prior art, the predetermined floor and the lower floor are integrated by removing the floor body of the predetermined floor of the existing building and reinforcing the floor body of the floor one level below the predetermined floor.

特許文献２には、既存建物において、中間柱を撤去する改造方法に関する技術が開示されている。この先行技術では、ケーブルによるポストテンションによって大梁の曲げ応力を低減している。 Patent Document 2 discloses a technique relating to a modification method for removing an intermediate pillar in an existing building. In this prior art, the bending stress of the girder is reduced by the post tension by the cable.

しかし、新たに形成する空間を大きくすると補強が難しく、新たに形成する空間の大きさには限界がある。 However, if the newly formed space is enlarged, it is difficult to reinforce it, and the size of the newly formed space is limited.

特開２００２−１０６１７８号公報Japanese Unexamined Patent Publication No. 2002-106178 特開２０１１−３８３８１号公報Japanese Unexamined Patent Publication No. 2011-38381

本発明は、上記事実を鑑み、改修によって既設建物の内部に新たに形成する空間を大きくすることが目的である。 In view of the above facts, an object of the present invention is to increase the space newly formed inside the existing building by renovation.

が目的である。 Is the purpose.

第一態様は、既設建物の所定層の連続する複数の柱梁構面を補強し、前記所定層に補強架構を構築する工程と、前記補強架構の直下の改修層の既設の柱又は前記補強架構の直下の複数の改修層の既設の柱及び梁を撤去する工程と、を備えた改修方法である。 The first aspect is a step of reinforcing a plurality of continuous column-beam structures of a predetermined layer of an existing building and constructing a reinforcing frame on the predetermined layer, and an existing column of a repair layer directly under the reinforcing frame or the reinforcement. This is a repair method including a process of removing existing columns and beams of a plurality of repair layers directly under the frame.

第一態様の改修方法では、所定層に補強架構を設けることで、補強架構の直下の改修層の既設の柱又は補強架構の直下の複数の改修層の既設の柱及び梁を撤去しても既設建物の撓みが抑制される。よって、改修により既設建物の内部に大きな空間を新たに形成することができる。 In the repair method of the first aspect, by providing a reinforcing frame in a predetermined layer, even if the existing columns and beams of the repair layer directly under the reinforcing frame are removed or the existing columns and beams of a plurality of repair layers directly under the reinforcing frame are removed. Deflection of existing buildings is suppressed. Therefore, a large space can be newly formed inside the existing building by the renovation.

第二態様は、前記改修層に新設の柱を設ける工程を備えた請求項１に記載の改修方法である。 The second aspect is the repair method according to claim 1, further comprising a step of providing a new pillar in the repair layer.

第二態様の改修方法では、補強架構の支持スパンは既設の柱のスパン単位となるが、新設の柱を設けることで、補強架構を最大の支持スパンで支持することができる。よって、既設建物の内部に更に大きな空間を形成することができる。 In the repair method of the second aspect, the support span of the reinforcing frame is the span unit of the existing columns, but by providing the newly installed columns, the reinforcing frame can be supported by the maximum support span. Therefore, a larger space can be formed inside the existing building.

第三態様は、前記補強架構を構築する工程では、前記所定層の連続する複数の前記柱梁構面にブレースを設け、前記所定層にトラス梁を構築する請求項１又は請求項２に記載の改修方法である。 A third aspect is described in claim 1 or 2, wherein in the step of constructing the reinforcing frame, braces are provided on a plurality of continuous column-beam structure surfaces of the predetermined layer, and a truss beam is constructed in the predetermined layer. It is a repair method of.

第三態様の改修方法では、所定層をトラス梁とすることで、支持スパンが大きくなり、既設建物の内部に更に大きな空間を形成することができる。 In the repair method of the third aspect, by using the truss beam as the predetermined layer, the support span is increased, and a larger space can be formed inside the existing building.

本発明によれば、改修によって既設建物の内部に新たに形成する空間を大きくすることができる。 According to the present invention, it is possible to increase the space newly formed inside the existing building by the renovation.

改修前の第一実施形態の既設建物を模式的に示す立面図である。It is an elevation view which shows typically the existing building of the 1st Embodiment before renovation. 改修中の第一実施形態の既設建物を模式的に示す立面図である。It is an elevation view which shows typically the existing building of the 1st Embodiment under renovation. 改修後の第一実施形態の既設建物を模式的に示す立面図である。It is an elevation view which shows typically the existing building of the 1st Embodiment after renovation. 改修後の第二実施形態の既設建物を模式的に示す立面図である。It is an elevation view which shows typically the existing building of the 2nd Embodiment after repair. 改修後の第三実施形態の既設建物を模式的に示す立面図である。It is an elevation view which shows typically the existing building of the 3rd Embodiment after repair.

＜実施形態＞
本発明の一実施形態に係る既設建物の改修方法について説明する。 <Embodiment>
A method of repairing an existing building according to an embodiment of the present invention will be described.

［既設建物］
まず、改修前の既設建物５０の構造ついて説明する。 [Existing building]
First, the structure of the existing building 50 before the renovation will be described.

図１に示すように、改修前の既設建物５０は、地盤１２に打ち込まれた杭基礎１４で支持され、一層の地下階５２と、一層６０Ａ、二層６０Ｂ、三層６０Ｃ、四層６０Ｄからなる地上階６１と、で構成されている。本実施形態では、地下階５２は鉄筋コンクリート造とされ、地上階６１は鉄骨造とされている。地上階６１は、鉄骨製の柱６２Ａ、６２Ｂ、６２Ｃ、６２Ｄ、６２Ｅ、６２Ｆ、６２Ｇ、６２Ｈ、６２Ｉ、６２Ｊ、６２Ｋ、６２Ｌと鉄骨製の梁６４Ａ、６４Ｂ、６４Ｃ、６４Ｄとでラーメン構造を構成している。なお、これらを区別する必要がない場合は、層６０、柱６２及び梁６４と記す。 As shown in FIG. 1, the existing building 50 before the renovation is supported by a pile foundation 14 driven into the ground 12, and has a basement floor 52 of one layer and 60A of one layer, 60B of two layers, 60C of three layers, and 60D of four layers. It is composed of the above-ground floor 61 and. In the present embodiment, the basement floor 52 is made of reinforced concrete and the ground floor 61 is made of steel frame. The ground floor 61 is composed of steel columns 62A, 62B, 62C, 62D, 62E, 62F, 62G, 62H, 62I, 62J, 62K, 62L and steel beams 64A, 64B, 64C, 64D. doing. When it is not necessary to distinguish between them, it is described as layer 60, column 62 and beam 64.

また、地上階６１における一層（地上階）６０Ａの天井（二層（二階）の床）を支持する梁が梁６４Ａであり、二層（二階）６０Ｂの天井（三層（三階）の床）を支持する梁が梁６４Ｂであり、三層（三階）６０Ｃの天井（四層（四階）の床）を支持する梁が梁６４Ｃであり、四層（四階）６０Ｄの天井を支持する梁が梁６４Ｄである。また、地上階６１の一層（一階）の床（地下階５２の天井）を支持する梁が梁５４である。 Further, the beam supporting the ceiling of the first layer (ground floor) 60A (floor of the second layer (second floor)) on the ground floor 61 is the beam 64A, and the ceiling of the second layer (second floor) 60B (floor of the third layer (third floor)). ) Is the beam 64B, and the beam supporting the ceiling of the third layer (third floor) 60C (the floor of the fourth layer (fourth floor)) is the beam 64C, and the ceiling of the fourth layer (fourth floor) 60D. The supporting beam is the beam 64D. The beam 54 is a beam that supports the floor (ceiling of the basement floor 52) of one layer (first floor) of the ground floor 61.

また、四層（四階）６０Ｄにおける柱６２と梁６４とで構成された各構面を柱梁構面６６Ｄとする。 Further, each structural surface composed of columns 62 and beams 64 in the four layers (fourth floor) 60D is referred to as a column-beam structural surface 66D.

なお、既設建物５０には、図示していない外壁、内壁及びスラブ等が、設けられている。 The existing building 50 is provided with an outer wall, an inner wall, a slab, and the like (not shown).

［改修方法］
次に、既設建物５０を改修して、図３に示すよう既設建物５０の内部に大きな空間７０を形成する既設建物５０の改修方法について説明する。 [Repair method]
Next, a method of repairing the existing building 50 to form a large space 70 inside the existing building 50 as shown in FIG. 3 will be described.

図２に示すように、柱６２Ｂと柱６２Ｃとの間に柱１１０Ａ（以降、「新設柱１１０Ａ」と記す）を新設し、柱６２Ｊと柱６２Ｋとの間に柱１１０Ｂ（以降、「新設柱１１０Ｂ」と記す）を新設する。 As shown in FIG. 2, a pillar 110A (hereinafter referred to as "new pillar 110A") is newly installed between the pillar 62B and the pillar 62C, and a pillar 110B (hereinafter referred to as "new pillar") is installed between the pillar 62J and the pillar 62K. 110B ”) will be newly established.

また、梁５４における新設柱１１０Ａ及び新設柱１１０Ｂの下の梁５４を補強する補強梁１１２Ａ及び補強梁１１２Ｂを構築する。 Further, a reinforcing beam 112A and a reinforcing beam 112B for reinforcing the beam 54 under the new column 110A and the new column 110B in the beam 54 are constructed.

既設建物５０の最上層である四層６０Ｄの各柱梁構面６６Ｄにブレース１０２を設け、四層６０Ｄに補強架構の一例としてのトラス梁１００を構築する。 A brace 102 is provided on each column beam structure 66D of the four layers 60D, which is the uppermost layer of the existing building 50, and a truss beam 100 as an example of the reinforcing frame is constructed on the four layers 60D.

次に、図３に示すように、トラス梁１００の直下の改修層である三層６０Ｃ、二層６０Ｂ、一層６０Ａの柱６２Ｃ、６２Ｄ、６２Ｅ、６２Ｆ、６２Ｇ、６２Ｈ、６２Ｉ、６２Ｊ及び梁６４Ａ、６４Ｂ、６４Ｃを撤去する。 Next, as shown in FIG. 3, the columns 62C, 62D, 62E, 62F, 62G, 62H, 62I, 62J and the beam 64A, which are the repair layers directly under the truss beam 100, are the three-layer 60C, the two-layer 60B, and the layer 60A. , 64B, 64C are removed.

なお、三層６０Ｃ、二層６０Ｂ、一層６０Ａの各層における両外側の柱６２Ａ、６２Ｂ、６２Ｋ、６２Ｌは、撤去せずに残す。また、梁６４Ａ、６４Ｂ、６４Ｃにおける新設柱１１０Ａ及び新設柱１１０Ｂよりも外側部分は、撤去せずに残す。 The pillars 62A, 62B, 62K, and 62L on both outer sides of each of the three layers 60C, the two layers 60B, and the layer 60A are left without being removed. Further, the outer portions of the beams 64A, 64B, and 64C from the new columns 110A and the new columns 110B are left without being removed.

また、三層６０Ｃ、二層６０Ｂ、一層６０Ａの柱６２及び梁６４を撤去する際に、図示していない内壁及びスラブも撤去する。 Further, when removing the columns 62 and beams 64 of the third layer 60C, the second layer 60B, and the first layer 60A, the inner wall and the slab (not shown) are also removed.

このように、柱６２及び梁６４（と内壁及びスラブ）を撤去することで、既設建物５０の地上階６１の内部に大きな空間７０が新たに形成される。 By removing the columns 62 and the beams 64 (and the inner wall and the slab) in this way, a large space 70 is newly formed inside the ground floor 61 of the existing building 50.

［作用及び効果］
次に、本実施形態の作用及び効果について説明する。 [Action and effect]
Next, the operation and effect of this embodiment will be described.

既設建物５０の四層６０Ｄの各柱梁構面６６Ｄにブレース１０２を設け、四層６０Ｄにトラス梁１００を構築することで、トラス梁１００の直下の改修層である三層６０Ｃ、二層６０Ｂ、一層６０Ａの柱６２Ｃ、６２Ｄ、６２Ｅ、６２Ｆ、６２Ｇ、６２Ｈ、６２Ｉ、６２Ｊ及び梁６４Ａ、６４Ｂ、６４Ｃを撤去しても、既設建物５０の撓みが抑制される。よって、改修により既設建物５０の撓みを抑制しつつ、既設建物５０の内部に大きな空間７０を新たに形成することができる。 By providing a brace 102 on each column beam structure 66D of the four-story 60D of the existing building 50 and constructing the truss beam 100 on the four-story 60D, the three-story 60C and the two-story 60B, which are the repair layers directly under the truss beam 100, are provided. Even if the columns 62C, 62D, 62E, 62F, 62G, 62H, 62I, 62J and the beams 64A, 64B, 64C of the layer 60A are removed, the bending of the existing building 50 is suppressed. Therefore, it is possible to newly form a large space 70 inside the existing building 50 while suppressing the bending of the existing building 50 by the renovation.

ここで、新設するトラス梁１００の支持スパンは既設の柱６２のスパン単位となる。よって、トラス梁１００の最大の支持スパンの位置に既設の柱６２がない場合は、最大スパンの位置の内側の柱６２Ｃ及び柱６２Ｊを残して、支持することになる。 Here, the support span of the truss beam 100 to be newly installed is the span unit of the existing column 62. Therefore, when there is no existing column 62 at the position of the maximum support span of the truss beam 100, the column 62C and the column 62J inside the position of the maximum span are left and supported.

しかし、本実施形態では、トラス梁１００の最大の支持スパンの位置に新設柱１１０Ａ、１１０Ｂを建てている。よって、柱６２Ｃ及び柱６２Ｊを撤去することができるので、新たに新設柱１１０Ａ、１１０Ｂを設けない場合よりも、新たに形成する空間７０を大きくすることができる。 However, in the present embodiment, the new columns 110A and 110B are built at the position of the maximum support span of the truss beam 100. Therefore, since the pillars 62C and 62J can be removed, the newly formed space 70 can be made larger than when the new pillars 110A and 110B are not newly provided.

＜第二実施形態＞
次に、第二実施形態の既設建物について説明する。なお、第一実施形態と同一の部材には同一の符号を付し、重複する説明は省略する。 <Second embodiment>
Next, the existing building of the second embodiment will be described. The same members as those in the first embodiment are designated by the same reference numerals, and redundant description will be omitted.

［既設建物及びその改修方法］
既設建物２５０と、その改修方法について説明する。 [Existing building and its repair method]
The existing building 250 and its repair method will be described.

図４には、第二実施形態の既設建物２５０の改修後の状態が図示されている。既設建物２５０は、一層の鉄筋コンクリート造の地下階２５２と、一層２６０Ａ、二層２６０Ｂ、三層２６０Ｃ、四層２６０Ｄ、五層２６０Ｅ、六層２６０Ｆ、七層２６０Ｇからなる鉄骨造の地上階２６１と、で構成されている。地上階２６１は、鉄骨製の柱２６２Ａ、２６２Ｂ、２６２Ｃ、２６２Ｄ、２６２Ｅと鉄骨製の梁２６４Ａ、２６４Ｂ、２６４Ｃ、２６４Ｄ、２６４Ｅ、２６４Ｆ、２６４Ｇとでラーメン構造を構成している。なお、これらを区別する必要がない場合は、層２６０、柱２６２及び梁２６４と記す。 FIG. 4 illustrates the state of the existing building 250 of the second embodiment after renovation. The existing building 250 includes a single-layer reinforced concrete basement floor 252 and a steel-framed ground floor 261 consisting of one layer 260A, two-layer 260B, three-layer 260C, four-layer 260D, five-layer 260E, six-layer 260F, and seven-layer 260G. It is composed of ,. The ground floor 261 is composed of steel columns 262A, 262B, 262C, 262D, 262E and steel beams 264A, 264B, 264C, 264D, 264E, 264F, and 264G. When it is not necessary to distinguish between them, it is described as layer 260, column 262 and beam 264.

既設建物２５０の最上層である七層２６０Ｇの連続する二つの各柱梁構面２６６Ｇにブレース１０２を設け、七層２６０Ｇにトラス梁２００を構築する。 A brace 102 is provided on each of two continuous column-beam structure surfaces 266G of the seven-story 260G, which is the uppermost layer of the existing building 250, and a truss beam 200 is constructed on the seven-story 260G.

また、既設建物２５０の五層２６０Ｅの連続する二つの各柱梁構面２６６Ｅにブレース１０２を設け、五層２６０Ｅにトラス梁２０２を構築する。 Further, a brace 102 is provided on each of two continuous column-beam structure surfaces 266E of the five-story 260E of the existing building 250, and a truss beam 202 is constructed on the five-story 260E.

次にトラス梁２００の直下の改修層である六層２６０Ｆの柱２６２Ｃを撤去する。なお、図示していない内壁も撤去する。 Next, the column 262C of the six-layer 260F, which is the repair layer directly under the truss beam 200, is removed. The inner wall (not shown) will also be removed.

また、トラス梁２０２の直下の改修層である四層２６０Ｄ及び三層２６０Ｃの柱２６２Ｃ及び梁２６４Ｃを撤去する。なお、図示していない内壁及びスラブも撤去する。 In addition, the columns 262C and beams 264C of the four layers 260D and the three layers 260C, which are the repair layers directly under the truss beam 202, are removed. The inner wall and slab (not shown) will also be removed.

これにより、六層２６０Ｆに空間２７０が新たに形成され、四層２６０Ｄ及び三層２６０Ｃに空間２７２が新たに形成される。 As a result, the space 270 is newly formed in the six layers 260F, and the space 272 is newly formed in the four layers 260D and the three layers 260C.

［作用及び効果］
次に、本実施形態の作用及び効果について説明する。 [Action and effect]
Next, the operation and effect of this embodiment will be described.

既設建物２５０の七層２６０Ｇの連続する二つの各柱梁構面２６６Ｇ及び五層２６０の連続する二つの各柱梁構面２６６Ｅにブレース１０２を設け、七層２６０Ｇ及び五層２６０Ｅにトラス梁２００、２０２を構築することで、六層２６０Ｆに空間２７０が新たに形成され、四層２６０Ｄ及び三層２６０Ｃに空間２７２が新たに形成される。よって、改修により既設建物２５０の撓みを抑制しつつ、既設建物２５０の内部に大きな空間２７０、２７２を新たに形成することができる。 Brace 102 is provided on each of the two continuous pillar-beam structure surfaces 266G of the seven-story 260G and the five-story 260 of the existing building 250, and the truss beam 200 is provided on the seven-story 260G and the five-story 260E. , 202 is newly formed in the six-layer 260F, and the space 272 is newly formed in the four-layer 260D and the three-layer 260C. Therefore, it is possible to newly form a large space 270, 272 inside the existing building 250 while suppressing the bending of the existing building 250 by the renovation.

＜第三実施形態＞
次に、第三実施形態の既設建物について説明する。なお、第一実施形態及び第二実施形態と同一の部材には同一の符号を付し、重複する説明は省略する。 <Third Embodiment>
Next, the existing building of the third embodiment will be described. The same members as those in the first embodiment and the second embodiment are designated by the same reference numerals, and redundant description will be omitted.

［既設建物及びその改修方法］
既設建物３５０と、その改修方法について説明する。 [Existing building and its repair method]
The existing building 350 and its repair method will be described.

図５には、第三実施形態の既設建物３５０の改修後の状態が図示されている。既設建物３５０は、一層の鉄筋コンクリート造の地下階３５２と、一層３６０Ａ、二層３６０Ｂ、三層３６０Ｃ、四層３６０Ｄ、五層３６０Ｅ、六層３６０Ｆ、七層３６０Ｇからなる鉄骨造の地上階３６１と、で構成されている。地上階３６１は、鉄骨製の柱３６２Ａ、３６２Ｂ、３６２Ｃ、３６２Ｄ、３６２Ｅ、３６２Ｆ、３６２Ｇ、３６２Ｈと鉄骨製の梁３６４Ａ、３６４Ｂ、３６４Ｃ、３６４Ｄ、３６４Ｅ、３６４Ｆ、３６４Ｇとでラーメン構造を構成している。なお、これらを区別する必要がない場合は、層３６０、柱３６２及び梁３６４と記す。 FIG. 5 illustrates the state of the existing building 350 of the third embodiment after renovation. The existing building 350 includes a one-layer reinforced concrete basement floor 352 and a steel-framed ground floor 361 consisting of one layer 360A, two-layer 360B, three-layer 360C, four-layer 360D, five-layer 360E, six-layer 360F, and seven-layer 360G. It is composed of ,. The ground floor 361 is composed of steel columns 362A, 362B, 362C, 362D, 362E, 362F, 362G, 362H and steel beams 364A, 364B, 364C, 364D, 364E, 364F, 364G. There is. When it is not necessary to distinguish between them, it is described as layer 360, column 362 and beam 364.

既設建物３５０の最上層である七層３６０Ｇの連続する四つの各柱梁構面３６６Ｇにブレース１０２を設け、七層３６０Ｇにトラス梁３００を構築する。 Brace 102 is provided on each of the four continuous column-beam structure surfaces 366G of the seven layers 360G, which is the uppermost layer of the existing building 350, and the truss beam 300 is constructed on the seven layers 360G.

また、既設建物３５０の五層３６０Ｅの連続する四つの各柱梁構面３６６Ｅにブレース１０２を設け、五層３６０Ｅにトラス梁３０２を構築する。 Further, a brace 102 is provided on each of the four continuous column-beam structure surfaces 366E of the five-story 360E of the existing building 350, and a truss beam 302 is constructed on the five-story 360E.

更に、既設建物３５０の四層３６０Ｄの連続する二つの各柱梁構面３６６Ｄにブレース１０２を設け、四層３６０Ｄにトラス梁３０４を構築する。 Further, a brace 102 is provided on each of two continuous column-beam structure surfaces 366D of the four-story 360D of the existing building 350, and a truss beam 304 is constructed on the four-story 360D.

次にトラス梁３００の直下の改修層である六層３６０Ｆの柱６２Ｄ、６２Ｃ、６２Ｄを撤去する。なお、図示していない内壁も撤去する。 Next, the columns 62D, 62C, and 62D of the six-layer 360F, which is the repair layer directly under the truss beam 300, are removed. The inner wall (not shown) will also be removed.

また、トラス梁３０２の直下の改修層である四層３６０Ｄ及び三層３６０Ｃの柱６２Ｂ、６２Ｃ、６２Ｄ及び梁６４Ｃを撤去する。なお、図示していない内壁及びスラブも撤去する。 Further, the columns 62B, 62C, 62D and the beam 64C of the four layers 360D and the three layers 360C, which are the repair layers directly under the truss beam 302, are removed. The inner wall and slab (not shown) will also be removed.

更に、トラス梁３０４の直下の改修層である三層３６０Ｃ、二層３６０Ｂ、一層３６０Ａ、地下階３５２の柱３６２Ｇ及び梁３６４Ｂ、３６４Ａ、３５４を撤去する。なお、図示していない内壁及びスラブ撤去する。 Further, the three-layer 360C, the two-layer 360B, the one-layer 360A, the columns 362G and the beams 364B, 364A, and 354 of the basement floor 352, which are the repair layers directly under the truss beam 304, are removed. The inner wall and slab (not shown) will be removed.

よって、六層３６０Ｆに空間３７０が新たに形成され、四層３６０Ｄ及び三層３６０Ｃに空間３７２が新たに形成され、三層３６０Ｃ、二層３６０Ｂ、一層３６０Ａ及び地下階３５２に空間３７４が新たに形成される。 Therefore, a space 370 is newly formed in the sixth layer 360F, a space 372 is newly formed in the fourth layer 360D and the third layer 360C, and a space 374 is newly formed in the third layer 360C, the second layer 360B, the first layer 360A and the basement floor 352. It is formed.

［作用及び効果］
次に、本実施形態の作用及び効果について説明する。 [Action and effect]
Next, the operation and effect of this embodiment will be described.

既設建物３５０の七層３６０Ｇの連続する四つの各柱梁構面２６６Ｇ、五層２６０の連続する四つの各柱梁構面３６６Ｅ、及び四層２６０Ｄの連続する二つの各柱梁架構２６６Ｄにブレース１０２を設け、七層３６０Ｇ、五層３６０Ｅ、及び四層３６０Ｄにトラス梁３００、３０２、３０４を構築する。これにより、六層３６０Ｆに空間３７０が新たに形成され、四層３６０Ｄ及び三層３６０Ｃに空間３７２が新たに形成され、三層３６０Ｃ、二層３６０Ｂ、一層３６０Ａ、地下階３５２に空間３７４が新たに形成される。よって、改修により既設建物３５０の撓みを抑制しつつ、既設建物３５０の内部に大きな空間３７０、３７２、３７４を新たに形成することができる。 Brace on each of the four consecutive beam-structured surfaces 266G of the seven-story 360G of the existing building 350, each of the four continuous column-beam structures of the five-story 260, and the two continuous column-beam frames 266D of the four-layer 260D. 102 is provided, and truss beams 300, 302, 304 are constructed on the seven layers 360G, the five layers 360E, and the four layers 360D. As a result, a space 370 is newly formed in the sixth layer 360F, a space 372 is newly formed in the fourth layer 360D and the third layer 360C, and a space 374 is newly formed in the third layer 360C, the second layer 360B, the first layer 360A, and the basement floor 352. Is formed in. Therefore, it is possible to newly form large spaces 370, 372, and 374 inside the existing building 350 while suppressing the bending of the existing building 350 by the renovation.

＜その他＞
尚、本発明は上記実施形態に限定されない。 <Others>
The present invention is not limited to the above embodiment.

上記実施形態では、連続する複数の柱梁架構にブレース１０２を設け、トラス梁１００、２００、２０２、３００、３０２、３０４を構築したが、これに限定されない。 In the above embodiment, the brace 102 is provided on a plurality of continuous column-beam frames to construct the truss beams 100, 200, 202, 300, 302, 304, but the present invention is not limited thereto.

トラス梁以外の補強架構であってもよい。例えば、ラチス梁であってもよい。 It may be a reinforcing frame other than a truss beam. For example, it may be a lattice beam.

要は、予め定めた所定層の連続する複数の柱梁架構を補強して補強架構を構築し、その直下の一層（改修層）の既設の柱又は補強架構の直下の複数の層（改修層）の既設の柱及び梁を撤去し、新た空間を形成すればよい。 The point is to construct a reinforcing frame by reinforcing a plurality of continuous columns and beams of a predetermined layer, and then to construct an existing column (repair layer) directly below the existing column or a plurality of layers (repair layer) directly below the reinforcing frame. ), The existing columns and beams may be removed to form a new space.

また、上記実施形態では、既設建物５０、２５０、３５０は、鉄筋コンクリート造の地下階５２、２５２、３５２と鉄骨造の地上階６１、２６１、３６１で構成されていたが、これに限定されない。本発明が適用される建物の構造はどのような構造であってもよい。 Further, in the above embodiment, the existing buildings 50, 250, 350 are composed of reinforced concrete basements 52, 252, 352 and steel-framed ground floors 61, 261, 361, but are not limited thereto. The structure of the building to which the present invention is applied may be any structure.

更に、本発明の要旨を逸脱しない範囲において種々なる態様で実施し得ることは言うまでもない Furthermore, it goes without saying that it can be carried out in various embodiments without departing from the gist of the present invention.

５０ 既設建物
６２ 柱
６４ 梁
６６Ｄ 柱梁構面
１００ トラス梁（補強架構の一例）
１１０Ａ 新設柱
１１０Ｂ 新設柱
２００ トラス梁（補強架構の一例）
２０２ トラス梁（補強架構の一例）
２５０ 既設建物
２６２ 柱
２６４ 梁
２６６Ｅ 柱梁構面
２６６Ｇ 柱梁構面
３００ トラス梁（補強架構の一例）
３０２ トラス梁（補強架構の一例）
３０４ トラス梁（補強架構の一例）
３５０ 既設建物
３６２ 柱
３６４ 梁
３６６Ｃ 柱梁構面
３６６Ｅ 柱梁構面
３６６Ｇ 柱梁構面 50 existing building
62 pillars
64 beams
66D Column Beam Structure 100 Truss Beam (Example of Reinforced Frame)
110A New column 110B New column 200 Truss beam (Example of reinforcing frame)
202 Truss beam (an example of reinforcing frame)
250 Existing Building 262 Columns 264 Beams 266E Columns and Beams Structure 266G Columns and Beams Structure 300 Truss Beams (Example of Reinforced Frame)
302 Truss beam (an example of reinforcing frame)
304 Truss beam (an example of reinforcing frame)
350 Existing Building 362 Columns 364 Beams 366C Columns and Beams Structure 366E Columns and Beams Structures 366G Columns and Beams Structures

Claims (5)

既設建物の所定層の連続する複数の柱梁構面を補強し、前記所定層に補強架構を構築する構築工程と、
前記補強架構の直下の改修層の既設の柱又は前記補強架構の直下の複数の改修層の既設の柱及び梁を撤去する撤去工程と、
を備え、
前記構築工程では、前記所定層の連続する複数の前記柱梁構面にブレースを設け、前記所定層にトラス梁又はラチス梁を構築する、
改修方法。 A construction process in which a plurality of continuous column-beam structures of a predetermined layer of an existing building are reinforced and a reinforcing frame is constructed on the predetermined layer.
A removal step of removing the existing columns and beams of the repair layer directly under the reinforcing frame or the existing columns and beams of the plurality of repair layers directly under the reinforcing frame.
With
In the construction step , a brace is provided on a plurality of continuous column-beam structure surfaces of the predetermined layer, and a truss beam or a lattice beam is constructed in the predetermined layer.
How to repair. 前記改修層に、前記既設の柱と前記既設の柱との間に、改修後に残す新設の柱を設ける新設柱工程を備えた請求項１に記載の改修方法。 The repair method according to claim 1, further comprising a new pillar process in which a new pillar to be left after the repair is provided between the existing pillar and the existing pillar in the repair layer. 前記新設柱工程では、前記新設の柱の下端の下の梁を補強する補強梁を構築する、
請求項２に記載の改修方法。 In the new column process, a reinforcing beam is constructed to reinforce the beam below the lower end of the new column.
The repair method according to claim 2. 前記撤去工程では、
前記改修層の前記既設の柱の少なくとも一組の隣り合う二本を残して撤去する、
又は、
前記複数の改修層の前記既設の柱の少なくとも一組の隣り合う二本と前記一組の前記既設の柱の間の前記既設の梁とを残して撤去する、
請求項１〜請求項３のいずれか１項に記載の改修方法。 In the removal step,
Remove, leaving at least one pair of adjacent two adjacent pillars of the existing pillars of the refurbishment layer.
Or
The plurality of repair layers are removed, leaving at least one set of adjacent two adjacent columns of the existing columns and the existing beams between the set of existing columns.
The repair method according to any one of claims 1 to 3. 前記撤去工程では、
前記改修層における外周の柱と該外周の柱の隣の前記既設の柱とを残して撤去する、
請求項４に記載の改修方法。 In the removal step,
The outer peripheral pillar in the repair layer and the existing pillar next to the outer peripheral pillar are removed.
The repair method according to claim 4.
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