JP7009724B2 - Column-beam frame repair method and repair column-beam frame - Google Patents

Column-beam frame repair method and repair column-beam frame Download PDF

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JP7009724B2
JP7009724B2 JP2016135861A JP2016135861A JP7009724B2 JP 7009724 B2 JP7009724 B2 JP 7009724B2 JP 2016135861 A JP2016135861 A JP 2016135861A JP 2016135861 A JP2016135861 A JP 2016135861A JP 7009724 B2 JP7009724 B2 JP 7009724B2
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column
frame
pillar
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JP2018003559A (en
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毅 八木
圭二 井垣
清 宮田
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Takenaka Corp
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Description

本発明は、柱梁架構改修方法及び改修柱梁架構に関する。 The present invention relates to a method for repairing a column-beam frame and a repaired column-beam frame.

下記特許文献１には、柱梁架構の梁を支持する中間柱を撤去する際の、柱梁架構の補強方法が示されている。この補強方法では、中間柱は頂部を梁に残して撤去され、この頂部が添柱に支持された１対のアーチ部材で挟み込まれる。これにより、梁が受ける荷重を中間柱の頂部からアーチ部材を介して添柱に伝達し、梁の変形を抑制している。 The following Patent Document 1 discloses a method of reinforcing a column-beam frame when removing an intermediate column supporting a beam of the column-beam frame. In this reinforcement method, the intermediate column is removed leaving the apex on the beam and the apex is sandwiched between a pair of arch members supported by the column. As a result, the load received by the beam is transmitted from the top of the intermediate column to the auxiliary column via the arch member, and the deformation of the beam is suppressed.

特開２０１０－３７７４６号公報Japanese Unexamined Patent Publication No. 2010-37746

しかし、梁が受ける荷重をアーチ部材で受けても、アーチ部材は梁の下部に載置されるだけなので梁の応力状態を調整することは難しく、梁の変形を抑制することは難しい。 However, even if the load received by the beam is received by the arch member, it is difficult to adjust the stress state of the beam because the arch member is only placed on the lower part of the beam, and it is difficult to suppress the deformation of the beam.

また、鉛直方向の高さが小さい天井裏空間には、このようなアーチ部材を格納することが難しい。このため、天井裏空間を設けずにアーチ部材を露出させたり、天井裏空間の高さを大きく取る必要がある。すなわち、上記特許文献１の柱梁架構の補強方法では、梁の変形を抑制するための制約が大きい。 Further, it is difficult to store such an arch member in the attic space where the height in the vertical direction is small. Therefore, it is necessary to expose the arch member without providing the attic space or to increase the height of the attic space. That is, in the method of reinforcing the column-beam frame of Patent Document 1, there are many restrictions for suppressing the deformation of the beam.

本発明は上記事実を考慮して、既設梁の応力状態を調整できる柱梁架構改修方法及び改修柱梁架構を提供することを目的とする。 In view of the above facts, an object of the present invention is to provide a beam-column frame repair method and a repaired beam-frame structure capable of adjusting the stress state of an existing beam.

請求項１の柱梁架構改修方法は、既設の柱梁架構内にある既設梁を支保工で支持し既設柱を撤去する工程と、前記既設柱の撤去部に跨って補助柱と補助梁とを備えた補助架構を設置する、又は、前記撤去部の両隣の既存柱に補助梁を架設する工程と、前記撤去部又は前記撤去部の周囲において、前記既設梁の下面と前記補助梁との間にジャッキ部材を設置する工程と、前記ジャッキ部材をジャッキアップして前記既設梁を支持する工程と、を有する。 The method of repairing the beam-column structure according to claim 1 includes a step of supporting the existing beam in the existing column-beam structure with a support and removing the existing column, and an auxiliary column and an auxiliary beam straddling the removed portion of the existing column. The step of installing an auxiliary frame provided with the above, or erection of an auxiliary beam on the existing pillars on both sides of the removed portion, and the lower surface of the existing beam and the auxiliary beam around the removed portion or the removed portion . It has a step of installing a jack member between them and a step of jacking up the jack member to support the existing beam .

請求項１に記載の柱梁架構改修方法によると、補助梁を受け台として既設梁をジャッキ部材でジャッキアップできる。このため、既設柱を撤去しても、既設梁をジャッキアップすることにより既設梁の応力状態を調整し、撤去前の状態に戻すことができる。 According to the column-beam frame repair method according to claim 1, the existing beam can be jacked up with a jack member using the auxiliary beam as a pedestal. Therefore, even if the existing pillar is removed, the stress state of the existing beam can be adjusted by jacking up the existing beam, and the state before the removal can be restored.

請求項２の柱梁架構改修方法は、前記既設梁を前記ジャッキ部材で支持した後、前記既設梁の下面と前記補助梁との間に荷重伝達部材を設置する工程を有する。 The method for repairing a column-beam frame according to claim 2 includes a step of supporting the existing beam with the jack member and then installing a load transmission member between the lower surface of the existing beam and the auxiliary beam.

請求項２に記載の柱梁架構改修方法によると、ジャッキ部材が受ける荷重を、荷重伝達部材に盛りかえることができる。このため、ジャッキ部材を撤去して転用することができる。 According to the column-beam frame repair method according to claim 2, the load received by the jack member can be transferred to the load transmission member. Therefore, the jack member can be removed and diverted.

請求項３の柱梁架構改修方法は、既設の柱梁架構内にある既設梁を支保工で支持し既設柱を撤去する工程と、前記撤去部の両側に、補助柱と、前記既設梁の側面に沿う補助梁と、を備えた補助架構を設置する工程と、前記撤去部において、前記既設梁の下面と前記補助梁を繋ぐ繋ぎ梁との間にジャッキ部材を設置する工程と、前記ジャッキ部材をジャッキアップして前記既設梁を支持する工程と、を有する。 The method of repairing the beam-column structure according to claim 3 is a step of supporting the existing beam in the existing beam-column structure by a support work and removing the existing beam, and auxiliary columns and the existing beam on both sides of the removed portion. A step of installing an auxiliary frame provided with an auxiliary beam along a side surface, a step of installing a jack member between the lower surface of the existing beam and a connecting beam connecting the auxiliary beam at the removed portion, and the jack. It has a step of jacking up a member to support the existing beam.

請求項３に記載の柱梁架構改修方法によると、既設梁の側面に沿って補助梁が２本設置される。このため、補助梁が既設梁の下部に配置される場合と比較して、梁下空間を高くすることができる。また、補助梁１本あたりの部材寸法を小さくすることができる。
請求項４の柱梁架構改修方法は、前記補助梁は、前記支保工で支持した前記既設梁と直交する方向の前記既設梁に沿って構築される。
請求項５の柱梁架構改修方法は、前記補助柱と、撤去されない既設柱とを固定する。
請求項６の柱梁架構改修方法は、前記既設柱の撤去部または前記撤去部の周囲の基礎梁から地中へ向かって、地中アンカーを打ち込む工程を有する。
請求項７の柱梁架構改修方法は、前記既設柱は、前記既設梁の下面まで撤去する。 According to the column-beam frame repair method according to claim 3, two auxiliary beams are installed along the side surface of the existing beam. Therefore, the space under the beam can be increased as compared with the case where the auxiliary beam is arranged below the existing beam. In addition, the member size per auxiliary beam can be reduced.
In the method of repairing a column-beam frame according to claim 4, the auxiliary beam is constructed along the existing beam in a direction orthogonal to the existing beam supported by the support work.
In the method of repairing a column-beam frame according to claim 5, the auxiliary column and an existing column that is not removed are fixed.
The method for repairing a column-beam frame according to claim 6 includes a step of driving an underground anchor from the removed portion of the existing pillar or the foundation beam around the removed portion toward the ground.
In the method of repairing the column-beam frame according to claim 7, the existing column is removed to the lower surface of the existing beam.

請求項８の改修柱梁架構は、前記柱梁架構の既設柱が撤去された撤去部に跨って設置され、補助柱と補助梁とを備えた補助架構、又は、前記柱梁架構の既設柱が撤去された撤去部の両隣の既存柱に架設された補助梁と、既設梁の下面と前記補助梁との間において、前記撤去部のみに設けられ、前記既設梁を持ち上げた状態で固定された持上げ部材と、を有する。 The repaired column-beam structure according to claim 8 is installed across the removed portion from which the existing column of the column-beam structure has been removed, and is an auxiliary structure provided with an auxiliary column and an auxiliary beam, or an existing column of the column-beam structure. A state in which the existing beam is lifted by being provided only in the removed portion between the auxiliary beam erected on the existing pillars on both sides of the removed portion and the lower surface of the existing beam and the auxiliary beam. It has a lifting member fixed by.

請求項８に記載の改修柱梁架構によると、補助梁を受け台として持上げ部材によって既設梁を持ち上げることができる。これにより、既設梁の応力状態を調整し、積載荷重の増加に伴う梁の変形や、柱を撤去した場合の梁の変形を抑制することができる。
請求項９の改修柱梁架構は、既設の柱梁架構と、補助柱及び補助梁を備え、前記既設梁の両側面に沿ってそれぞれ設けられた補助架構と、前記柱梁架構の既設柱が撤去された撤去部において、前記補助架構の補助梁を繋ぐ繋ぎ梁と、前記撤去部において、既設梁の下面と前記繋ぎ梁との間に設けられ、前記既設梁を持ち上げた状態で固定された持上げ部材と、を有する改修柱梁架構。
請求項１０の改修柱梁架構は、前記既設柱は、前記既設梁の下面まで撤去されている。 According to the refurbished beam frame according to claim 8 , the existing beam can be lifted by the lifting member using the auxiliary beam as a pedestal. As a result, the stress state of the existing beam can be adjusted, and the deformation of the beam due to the increase in the load and the deformation of the beam when the column is removed can be suppressed.
The repaired pillar-beam structure according to claim 9 includes an existing pillar-beam structure, an auxiliary column, and an auxiliary beam, and the auxiliary frame provided along both side surfaces of the existing beam and the existing pillar of the pillar-beam structure are included. In the removed removed portion, a connecting beam connecting the auxiliary beams of the auxiliary frame was provided, and in the removed portion, the existing beam was provided between the lower surface of the existing beam and the connecting beam, and the existing beam was fixed in a lifted state. Refurbished pillar-beam structure with lifting members.
In the repaired column beam frame of claim 10, the existing column is removed to the lower surface of the existing beam.

本発明に係る柱梁架構改修方法及び改修柱梁架構によると、既設梁の応力状態を調整できる。 According to the column-beam frame repair method and the repaired beam-frame structure according to the present invention, the stress state of the existing beam can be adjusted.

（Ａ）は本発明の第１実施形態に係る改修柱梁架構を示した平面図であり、（Ｂ）は（Ａ）のＢ－Ｂ線断面図である。(A) is a plan view showing the repaired column beam frame which concerns on 1st Embodiment of this invention, and (B) is the BB line sectional view of (A). 本発明の第１実施形態に係る柱梁架構改修方法を示す立面図であり、（Ａ）は梁下に支保工を設置した状態を示し、（Ｂ）は既設の柱を撤去した状態を示し、（Ｃ）は既設の柱の撤去部に跨る補助架構を設置した状態を示している。It is an elevation view which shows the column beam frame repair method which concerns on 1st Embodiment of this invention, (A) shows the state which installed the support under the beam, (B) is the state which the existing column was removed. (C) shows a state in which an auxiliary frame straddling the removed part of the existing pillar is installed. （Ａ）は本発明の第１実施形態に係る柱梁架構改修方法において既設の梁と補助梁との間にジャッキ部材を設置した状態を示す立面拡大図であり、（Ｂ）は（Ａ）のＢ－Ｂ線断面図である。(A) is an elevation enlarged view showing a state in which a jack member is installed between an existing beam and an auxiliary beam in the column-beam frame repair method according to the first embodiment of the present invention, and (B) is (A). ) Is a sectional view taken along line BB. （Ａ）は本発明の第１実施形態に係る柱梁架構改修方法において既設の梁と補助梁との間にコンクリート部材を設置した状態を示す立面拡大図であり、（Ｂ）は（Ａ）のＢ－Ｂ線断面図である。(A) is an elevation enlarged view showing a state in which a concrete member is installed between an existing beam and an auxiliary beam in the column-beam frame repair method according to the first embodiment of the present invention, and (B) is (A). ) Is a sectional view taken along line BB. （Ａ）は本発明の第１実施形態に係る柱梁架構改修方法及び改修柱梁架構において、既設の柱と補助柱にそれぞれスタッドボルトを接合し、既設の柱と補助柱との間にコンクリートを打設した状態を示す立面図であり、（Ｂ）は既設の柱と補助柱とをボルト接合した状態を示す立面図である。In (A), in the column-beam structure repair method and the repaired column-beam structure according to the first embodiment of the present invention, stud bolts are joined to the existing columns and auxiliary columns, respectively, and concrete is formed between the existing columns and the auxiliary columns. It is an elevation view which shows the state which put in place, and (B) is an elevation view which shows the state which bolt-joined the existing pillar and the auxiliary pillar. （Ａ）は本発明の第１実施形態に係る柱梁架構改修方法及び改修柱梁架構において、補助架構を十字に構成した例を示す平面図であり、（Ｂ）は既存の柱を撤去しないで補助架構を用いた例を示す平面図であり、（Ｃ）は補助柱を省略し補助梁だけを用いた例を示す立面図である。(A) is a plan view showing an example in which the auxiliary frame is configured in a cross in the column-beam frame repair method and the repaired beam-frame structure according to the first embodiment of the present invention, and (B) is a plan view showing an example in which the existing columns are not removed. It is a plan view which shows the example which used the auxiliary frame in, and (C) is an elevation view which shows the example which omitted the auxiliary column and used only the auxiliary beam. （Ａ）は本発明の第２実施形態に係る改修柱梁架構を示した平面図であり、（Ｂ）は（Ａ）のＢ－Ｂ線断面図である。(A) is a plan view which showed the repaired column beam frame which concerns on 2nd Embodiment of this invention, and (B) is the BB line sectional view of (A). （Ａ）は本発明の第２実施形態に係る柱梁架構改修方法において既設の梁と繋ぎ梁との間にジャッキ部材を載置した状態を示す平面拡大図であり、（Ｂ）は（Ａ）のＢ－Ｂ線断面図である。(A) is a plan enlarged view showing a state in which a jack member is placed between an existing beam and a connecting beam in the column-beam frame repair method according to the second embodiment of the present invention, and (B) is (A). ) Is a sectional view taken along line BB.

［第１実施形態］
（柱梁架構）
第１実施形態に係る柱梁架構改修方法が適用される柱梁架構１０は、図１（Ａ）、（Ｂ）に示すように、柱１２と、柱１２に架け渡された梁１４とを備えている。なお、図１（Ｂ）は図１（Ａ）に示されたＢ－Ｂ線断面図であり、図１（Ａ）は図１（Ｂ）に示されたＡ－Ａ線断面図である。 [First Embodiment]
(Pillar beam frame)
As shown in FIGS. 1A and 1B, the column-beam frame 10 to which the column-beam frame repair method according to the first embodiment is applied includes a column 12 and a beam 14 bridged to the column 12. I have. 1 (B) is a sectional view taken along line BB shown in FIG. 1 (A), and FIG. 1 (A) is a sectional view taken along line AA shown in FIG. 1 (B).

図１（Ａ）、（Ｂ）は柱梁架構１０の改修後の状態を示している。詳しくは後述するが、柱梁架構１０は改修時に柱１２が撤去され（撤去部１２Ｅ）、改修後の状態（改修柱梁架構）においては補助柱２２と補助梁２４とを備えた補助架構２０が、撤去部１２Ｅに跨るようにして配置されている。さらに、撤去部１２Ｅにおいて、梁１４の下面と補助梁２４の上面との間に、梁１４が受ける荷重を補助架構２０へ伝達する荷重伝達部材としてのコンクリートブロック３４（図１（Ｂ）参照）が設けられている。なお、撤去部１２Ｅは、撤去前に柱１２が存在していた空間の部分全体を指す。 FIGS. 1 (A) and 1 (B) show the state after the repair of the column-beam frame 10. As will be described in detail later, in the column-beam frame 10, the column 12 is removed at the time of repair (removal part 12E), and in the state after the repair (repaired column-beam frame), the auxiliary frame 20 provided with the auxiliary pillar 22 and the auxiliary beam 24. However, it is arranged so as to straddle the removed portion 12E. Further, in the removed portion 12E, the concrete block 34 as a load transmission member for transmitting the load received by the beam 14 to the auxiliary frame 20 between the lower surface of the beam 14 and the upper surface of the auxiliary beam 24 (see FIG. 1 (B)). Is provided. The removal portion 12E refers to the entire portion of the space where the pillar 12 existed before the removal.

なお、図１（Ａ）、（Ｂ）において柱１２は一定間隔で配置されているが、本発明の実施形態はこれに限らず、間隔はバラバラでもよい。また、撤去部１２Ｅは図１（Ａ）、（Ｂ）に示されたような配置に限らず、例えば隣り合う柱１２を撤去して複数スパンに亘って撤去部１２Ｅを配置してもよい。さらに、補助架構２０は、構成を分かり易くするために図１（Ａ）のＸ方向及びＹ方向に沿って配置された状態が描かれているが、Ｘ方向、Ｙ方向任意の方向に沿って配置することができる。 Although the pillars 12 are arranged at regular intervals in FIGS. 1A and 1B, the embodiment of the present invention is not limited to this, and the intervals may be different. Further, the removal portion 12E is not limited to the arrangement as shown in FIGS. 1A and 1B, and for example, the adjacent pillars 12 may be removed and the removal portion 12E may be arranged over a plurality of spans. Further, the auxiliary frame 20 is drawn in a state of being arranged along the X direction and the Y direction of FIG. 1 (A) in order to make the configuration easy to understand, but the auxiliary frame 20 is drawn along any direction in the X direction and the Y direction. Can be placed.

柱梁架構１０は、地下階を備えた建物の最下階の架構とされ、柱梁架構１０を支持する基礎梁１６の上面１６Ａは、図示しない地下水位よりも低位置に形成されている。柱１２を撤去した撤去部１２Ｅは、上方から下方へ基礎梁１６を強く押圧できないので、柱１２が撤去されない部分と比較して、地下水から上向きに受ける水圧Ｐに抵抗する力が弱い。このため、撤去部１２Ｅまたは撤去部１２Ｅの周囲の基礎梁１６から地中へ向かって、水圧Ｐに抵抗するための地中アンカー１８が打込まれる。 The column-beam frame 10 is a frame on the lowest floor of a building having a basement floor, and the upper surface 16A of the foundation beam 16 supporting the column-beam frame 10 is formed at a position lower than the groundwater level (not shown). Since the removed portion 12E from which the pillar 12 has been removed cannot strongly press the foundation beam 16 from above to below, the force that resists the water pressure P upward from the groundwater is weaker than that at the portion where the pillar 12 is not removed. Therefore, the underground anchor 18 for resisting the water pressure P is driven from the foundation beam 16 around the removed portion 12E or the removed portion 12E toward the ground.

なお、地下水位が基礎梁１６の上面１６Ａよりも低い場合や、水圧Ｐが建物の構造上問題とならない場合は、地中アンカー１８を設ける必要はない。また、柱梁架構改修方法が適用される柱梁架構１０は、建物の最下階に限らず、任意の階とすることができる。 If the groundwater level is lower than the upper surface 16A of the foundation beam 16 or if the water pressure P does not pose a structural problem in the building, it is not necessary to provide the underground anchor 18. Further, the pillar-beam frame 10 to which the pillar-beam frame repair method is applied is not limited to the lowest floor of the building, and may be any floor.

（柱梁架構改修方法）
柱梁架構１０において柱１２を撤去する改修を行うためには、図２（Ａ）に示すように、まず撤去対象となる柱１２に支持されている梁１４の下面１４Ａと基礎梁１６の上面１６Ａとの間に仮設柱としての支保工９０を設置して、梁１４を支持する。 (How to repair columns and beams)
In order to perform repairs to remove the columns 12 in the column-beam frame 10, first, as shown in FIG. 2A, the lower surface 14A of the beam 14 and the upper surface of the foundation beam 16 supported by the columns 12 to be removed. A support work 90 as a temporary pillar is installed between the 16A and the beam 14 to support the beam 14.

次に、図２（Ｂ）に示すように柱１２を撤去する。このとき、後述するジャッキ部材３２で梁１４をジャッキアップしやすくするため、柱１２は梁１４の下面までの部分を平坦にはつり取ることが好ましい。 Next, the pillar 12 is removed as shown in FIG. 2 (B). At this time, in order to make it easier to jack up the beam 14 with the jack member 32 described later, it is preferable that the pillar 12 flatly scrapes the portion up to the lower surface of the beam 14.

次に、図２（Ｃ）に示すように、支保工９０を設置した梁１４と直交する梁１４に沿って、補助架構２０を設置する。このとき補助架構２０の補助柱２２を、基礎梁１６の上面１６Ａから立設し、柱梁架構１０の柱１２の側方に隙間を空けて配置する。補助柱２２に支持される補助梁２４は、柱梁架構１０の梁１４の下方に隙間を空けて延設される。これにより補助梁２４は、図１（Ａ）に示すように柱１２を撤去した撤去部１２Ｅに跨るようにして配置される。なお、補助柱２２、補助梁２４は何れもＨ形鋼で形成されているが、角型鋼管やＣＴ形鋼、チャンネル材などを用いてもよい。 Next, as shown in FIG. 2C, the auxiliary frame 20 is installed along the beam 14 orthogonal to the beam 14 on which the support 90 is installed. At this time, the auxiliary columns 22 of the auxiliary frame 20 are erected from the upper surface 16A of the foundation beam 16 and arranged with a gap on the side of the columns 12 of the column beam frame 10. The auxiliary beam 24 supported by the auxiliary column 22 is extended below the beam 14 of the column-beam frame 10 with a gap. As a result, the auxiliary beam 24 is arranged so as to straddle the removed portion 12E from which the pillar 12 has been removed as shown in FIG. 1 (A). Although the auxiliary columns 22 and the auxiliary beams 24 are all made of H-shaped steel, square steel pipes, CT-shaped steel, channel materials, and the like may be used.

次に、図３（Ａ）に示すように、撤去部１２Ｅにおいて、梁１４の下面１４Ａと補助梁２４の上面２４Ａとの間に、ジャッキ部材３２を設置する。図３（Ａ）に示されたＢ－Ｂ線断面図である図３（Ｂ）に示すように、ジャッキ部材３２は、撤去部１２Ｅの中心部、即ち撤去された柱１２（図２（Ａ）参照）の軸方向の中心線ＣＬが通る位置において、補助梁２４に載置される。 Next, as shown in FIG. 3A, a jack member 32 is installed between the lower surface 14A of the beam 14 and the upper surface 24A of the auxiliary beam 24 in the removed portion 12E. As shown in FIG. 3B, which is a cross-sectional view taken along the line BB shown in FIG. 3A, the jack member 32 is the central portion of the removed portion 12E, that is, the removed pillar 12 (FIG. 2A). )), It is placed on the auxiliary beam 24 at a position where the center line CL in the axial direction passes.

次に、ジャッキ部材３２により梁１４をジャッキアップして、支保工９０（図２参照）が梁１４から受ける荷重をジャッキ部材３２へ盛り変え、支保工９０を撤去する。ジャッキ部材３２により梁１４をジャッキアップすることで、梁１４の応力状態は、柱１２を撤去する前の応力状態となる。ジャッキ部材３２が受ける荷重は、補助梁２４を介して補助柱２２へ伝達される。なお、ジャッキ部材３２は、梁１４をジャッキアップできるものであれば、ネジ式ジャッキ、油圧ジャッキ、エアージャッキなど、各種の構造の物を用いることができる。 Next, the beam 14 is jacked up by the jack member 32, the load received from the beam 14 by the support 90 (see FIG. 2) is transferred to the jack member 32, and the support 90 is removed. By jacking up the beam 14 with the jack member 32, the stress state of the beam 14 becomes the stress state before the column 12 is removed. The load received by the jack member 32 is transmitted to the auxiliary pillar 22 via the auxiliary beam 24. As the jack member 32, various structures such as a screw type jack, a hydraulic jack, and an air jack can be used as long as the beam 14 can be jacked up.

次に、図４（Ａ）、（Ｂ）に示すように、撤去部１２Ｅにおいて、梁１４の下面１４Ａと補助梁２４の上面２４Ａとの間に、コンクリートブロック３４を設置する。コンクリートブロック３４は、予め所定のサイズに成形されたものを用いてもよいし、ジャッキ部材３２によって梁１４をジャッキアップした状態で、ジャッキ部材３２の周囲に型枠を組み付け、梁１４の下面１４Ａと補助梁２４の上面２４Ａとの間にコンクリートを充填し硬化させることで形成してもよい。なお、コンクリートブロック３４は、梁１４が受ける荷重を補助架構２０へ伝達するため、高強度コンクリートを用いることが望ましい。また、コンクリートブロック３４に代えて、無収縮モルタル、鋼材などを用いることもできる。 Next, as shown in FIGS. 4A and 4B, a concrete block 34 is installed between the lower surface 14A of the beam 14 and the upper surface 24A of the auxiliary beam 24 in the removed portion 12E. The concrete block 34 may be formed in advance to a predetermined size, or a formwork is assembled around the jack member 32 in a state where the beam 14 is jacked up by the jack member 32, and the lower surface 14A of the beam 14 is attached. It may be formed by filling concrete between the auxiliary beam 24 and the upper surface 24A of the auxiliary beam 24 and hardening the concrete. Since the concrete block 34 transmits the load received by the beam 14 to the auxiliary frame 20, it is desirable to use high-strength concrete. Further, instead of the concrete block 34, a non-shrink mortar, a steel material, or the like can be used.

次に、ジャッキ部材３２をジャッキダウンして、ジャッキ部材３２が梁１４から受ける荷重をジャッキ部材３２からコンクリートブロック３４へ盛り変え、ジャッキ部材３２を撤去する。以上の工程により、改修柱梁架構が形成される。 Next, the jack member 32 is jacked down, the load received by the jack member 32 from the beam 14 is transferred from the jack member 32 to the concrete block 34, and the jack member 32 is removed. By the above process, the repaired column beam frame is formed.

（作用・効果）
第１実施形態に係る柱梁架構改修方法及び改修柱梁架構によると、補助梁２４を受け台として、既設の梁１４をジャッキ部材３２でジャッキアップできる。このため、既設の柱１２を撤去しても、梁１４をジャッキアップすることにより、梁１４の応力状態を調整して柱１２の撤去前の状態に戻すことができる。 (Action / effect)
According to the column-beam frame repair method and the repair-column-beam frame according to the first embodiment, the existing beam 14 can be jacked up by the jack member 32 using the auxiliary beam 24 as a pedestal. Therefore, even if the existing pillar 12 is removed, the stress state of the beam 14 can be adjusted to return to the state before the removal of the pillar 12 by jacking up the beam 14.

つまり、柱１２を撤去した場合、撤去部１２Ｅにおいて梁１４は上階の荷重によって沈み込む（撓む）が、補助梁２４に載置したジャッキ部材３２で梁１４をジャッキアップすることで、沈み込んだ分を押し戻すことができる。 That is, when the pillar 12 is removed, the beam 14 sinks (deflects) in the removed portion 12E due to the load on the upper floor, but it sinks by jacking up the beam 14 with the jack member 32 mounted on the auxiliary beam 24. You can push back the crowded part.

さらに、建物の改修時、用途変更などに伴い上階の積載荷重が従前よりも増える場合であっても、ジャッキアップにより梁１４を押し戻す力を大きくすれば、積載荷重の増分に対応することができる。 Furthermore, even if the load on the upper floors increases due to changes in usage when renovating a building, it is possible to cope with the increase in load by increasing the force that pushes back the beam 14 by jacking up. can.

このため、既設の柱１２を撤去しても、撤去された柱１２に支持されていた梁１４に与える構造的な負担を低減することができる。これにより、図１（Ａ）に示すように、改修前よりも広い無柱空間Ｖを形成することができる。また、互いに隣接する柱１２を撤去し、撤去した箇所ごとに補助架構２０を設けることで、無柱空間Ｖを更に広くすることもできる。 Therefore, even if the existing pillar 12 is removed, the structural burden on the beam 14 supported by the removed pillar 12 can be reduced. As a result, as shown in FIG. 1 (A), it is possible to form a pillar-free space V wider than before the repair. Further, the pillar-free space V can be further widened by removing the pillars 12 adjacent to each other and providing an auxiliary frame 20 at each removed portion.

また、本実施形態においては、ジャッキ部材３２が梁１４から受ける荷重をジャッキ部材３２からコンクリートブロック３４へ盛り変えることで、ジャッキ部材３２を撤去できる。このため、ジャッキ部材３２を任意の用途に転用することができる。 Further, in the present embodiment, the jack member 32 can be removed by changing the load received by the jack member 32 from the beam 14 from the jack member 32 to the concrete block 34. Therefore, the jack member 32 can be diverted to any purpose.

なお、コンクリートブロック３４は本発明における持ち上げ部材の一例であるが、持ち上げ部材の構成はこれに限らない。 The concrete block 34 is an example of the lifting member in the present invention, but the configuration of the lifting member is not limited to this.

例えばジャッキ部材３２は必ずしも撤去する必要はない。ジャッキ部材３２を撤去しない場合、梁１４から受ける荷重はジャッキ部材３２を介して補助梁２４に伝達できるので、コンクリートブロック３４は設置しなくてもよい。コンクリートブロック３４を設置しなければ、施工手間が減る。この場合、ジャッキ部材３２が持ち上げ部材となる。 For example, the jack member 32 does not necessarily have to be removed. If the jack member 32 is not removed, the load received from the beam 14 can be transmitted to the auxiliary beam 24 via the jack member 32, so that the concrete block 34 does not have to be installed. If the concrete block 34 is not installed, the construction work will be reduced. In this case, the jack member 32 becomes a lifting member.

あるいは、ジャッキ部材３２の周囲にコンクリートを現場打ちし、このコンクリートにジャッキ部材３２を埋設してもよい。ジャッキ部材３２をコンクリートに埋設することで、ジャッキ部材３２が破壊されてもコンクリートにより梁１４を支えることができる。もしくは、コンクリートが破壊されてもジャッキ部材３２により梁１４を支えることができる。このため、梁１４を支える機能を冗長化することができる。ジャッキ部材３２及びコンクリートの双方が持ち上げ部材となる。 Alternatively, concrete may be cast in the field around the jack member 32, and the jack member 32 may be embedded in the concrete. By embedding the jack member 32 in concrete, the beam 14 can be supported by the concrete even if the jack member 32 is destroyed. Alternatively, even if the concrete is destroyed, the beam 14 can be supported by the jack member 32. Therefore, the function of supporting the beam 14 can be made redundant. Both the jack member 32 and the concrete serve as a lifting member.

また、本実施形態においてジャッキ部材３２は、柱１２の撤去部１２Ｅに設置される。柱１２を撤去した際に、梁１４の変形が最も大きくなる箇所は撤去部１２Ｅであるが、この撤去部１２Ｅにおいてジャッキ部材３２を用いることで、梁１４を効率的にジャッキアップすることができる。 Further, in the present embodiment, the jack member 32 is installed in the removed portion 12E of the pillar 12. When the pillar 12 is removed, the place where the deformation of the beam 14 is the largest is the removed portion 12E, but by using the jack member 32 in this removed portion 12E, the beam 14 can be efficiently jacked up. ..

なお、ジャッキ部材３２は、撤去部１２Ｅ以外の部分に設置することもできる。例えば図４（Ｂ）に二点鎖線で示したジャッキ部材３２Ａのように、撤去部１２Ｅの周囲に複数設置してもよい。ジャッキ部材を複数設置すれば、ジャッキ部材１台あたりが負担する梁１４からの荷重を小さくすることができる。このため、ジャッキ部材を小型化できる。また、ジャッキ部材３２Ａを撤去部１２Ｅの周囲に設置し、撤去部１２Ｅには設置しないことにより、撤去部１２Ｅに設置するコンクリートブロック３４を大きく形成することができる。このため、コンクリートブロック３４が負担する単位体積当たりの荷重が低減されるので、コンクリートの強度を小さくすることができる。 The jack member 32 can also be installed in a portion other than the removed portion 12E. For example, as in the jack member 32A shown by the alternate long and short dash line in FIG. 4B, a plurality of jack members 32A may be installed around the removed portion 12E. If a plurality of jack members are installed, the load from the beam 14 borne by one jack member can be reduced. Therefore, the jack member can be miniaturized. Further, by installing the jack member 32A around the removed portion 12E and not installing it in the removed portion 12E, the concrete block 34 to be installed in the removed portion 12E can be formed large. Therefore, since the load per unit volume borne by the concrete block 34 is reduced, the strength of the concrete can be reduced.

また、本実施形態において、補助架構２０の補助柱２２は柱梁架構１０の柱１２の側方に隙間を空けて配置されている。これにより、予め補助柱２２と補助梁２４とを組み合わせて門型の補助架構２０を形成し、これを既存の柱梁架構１０の内側へスライドさせることにより、容易に配置することができる。 Further, in the present embodiment, the auxiliary columns 22 of the auxiliary frame 20 are arranged with a gap on the side of the columns 12 of the column beam frame 10. As a result, the auxiliary pillar 22 and the auxiliary beam 24 are combined in advance to form a gate-shaped auxiliary frame 20, which can be easily arranged by sliding it inside the existing pillar-beam frame 10.

なお、図５（Ａ）に示すように、補助柱２２と柱１２との隙間にはコンクリートを充填してもよい。この場合、例えば補助柱２２の柱１２側の側面にスタッドボルト３６を溶接し、柱１２の補助柱２２側の側面にもスタッドボルト３６を埋め込むことで、コンクリートを介して、補助柱２２に作用する軸力及び曲げ力を柱１２へ伝達することができる。 As shown in FIG. 5A, the gap between the auxiliary pillar 22 and the pillar 12 may be filled with concrete. In this case, for example, by welding the stud bolt 36 to the side surface of the auxiliary pillar 22 on the pillar 12 side and embedding the stud bolt 36 on the side surface of the pillar 12 on the auxiliary pillar 22 side, the stud bolt 36 acts on the auxiliary pillar 22 via concrete. Axial force and bending force can be transmitted to the column 12.

また、図５（Ｂ）に示すように、補助柱２２を柱１２へ近接させて、Ｈ形鋼で形成された補助柱２２のフランジ２２Ｆを、柱１２の側面へボルト３８を用いて固定してもよい。このような構成によっても、補助柱２２に作用する軸力及び曲げ力を柱１２へ伝達することができる。 Further, as shown in FIG. 5B, the auxiliary pillar 22 is brought close to the pillar 12, and the flange 22F of the auxiliary pillar 22 made of H-shaped steel is fixed to the side surface of the pillar 12 by using bolts 38. You may. Even with such a configuration, the axial force and the bending force acting on the auxiliary column 22 can be transmitted to the column 12.

なお、図５（Ａ）、（Ｂ）においてスタッドボルト３６及びボルト３８を柱１２に固定するためには、例えば図示しない後施工アンカーを埋設すればよい。 In addition, in order to fix the stud bolt 36 and the bolt 38 to the pillar 12 in FIGS. 5A and 5B, for example, a post-construction anchor (not shown) may be embedded.

また、本実施形態において補助架構２０は、補助柱２２と補助梁２４による門型の架構とされている。すなわち補助架構２０は、既設の柱１２及び梁１４で形成される門型の柱梁架構１０に沿う形状とされている。このため、例えば補助架構にアーチ部材などを用いる場合と比較して、補助架構を設置するための空間を少なくできる。したがって、改修後の建物に与えるプラン上の影響を小さくできる。 Further, in the present embodiment, the auxiliary frame 20 is a gate-shaped frame composed of auxiliary columns 22 and auxiliary beams 24. That is, the auxiliary frame 20 has a shape along the gate-shaped column-beam frame 10 formed by the existing columns 12 and 14. Therefore, as compared with the case where an arch member or the like is used for the auxiliary frame, the space for installing the auxiliary frame can be reduced. Therefore, the impact on the plan of the renovated building can be reduced.

なお、本実施形態においては撤去部１２Ｅに門型の補助架構２０を配置しているが、本発明の実施形態はこれに限らない。例えば図６（Ａ）に示すように、撤去部１２Ｅを中心として、Ｘ方向、Ｙ方向の梁１４それぞれに沿うような平面十字形状の補助架構２６を配置してもよい。補助架構２６においては、補助柱２６Ａが既存の柱１２に沿って４本設置され、Ｙ方向に隣接する補助柱２６Ａ間に補助梁２６Ｂが架け渡され、Ｘ方向に隣接する補助柱２６Ａから補助梁２６Ｂの中心部に、補助梁２６Ｃが架け渡されている。 In the present embodiment, the gate-shaped auxiliary frame 20 is arranged in the removed portion 12E, but the embodiment of the present invention is not limited to this. For example, as shown in FIG. 6A, a flat cross-shaped auxiliary frame 26 may be arranged so as to be centered on the removed portion 12E and along the beams 14 in the X direction and the Y direction, respectively. In the auxiliary frame 26, four auxiliary pillars 26A are installed along the existing pillar 12, an auxiliary beam 26B is bridged between the auxiliary pillars 26A adjacent to the Y direction, and the auxiliary pillar 26A is assisted from the auxiliary pillar 26A adjacent to the X direction. An auxiliary beam 26C is bridged over the center of the beam 26B.

これにより補助架構２６は、梁１４から受ける荷重を補助梁２６Ｂ、２６Ｃを介して４本の補助柱２６Ａへ伝達させることができる。したがって補助架構２６は補助架構２０（図１参照）と比べて、部材断面を小さくして、天井高を確保することができる。 As a result, the auxiliary frame 26 can transmit the load received from the beam 14 to the four auxiliary columns 26A via the auxiliary beams 26B and 26C. Therefore, the auxiliary frame 26 can secure the ceiling height by making the member cross section smaller than that of the auxiliary frame 20 (see FIG. 1).

また、本実施形態においては柱１２を撤去して補助架構２０を配置しているが、本発明の実施形態はこれに限らず、柱１２を撤去しない場合でも、補助架構２０を用いることができる。このように補助架構２０を用いる場合としては、例えば図６（Ｂ）に示すように、隣接する柱１２間のスパンが他の部分と比較して長い部分において、当該柱１２間に架け渡された梁１５の撓みを抑制する場合が挙げられる。このとき、例えば梁１５の中央部をジャッキアップする。これにより、他の部分よりも柱のスパンが長い部分に他の部分よりも大きい積載荷重を与えても、構造耐力上問題が生じにくい。このため、建物を大きな面積が必要で大きな積載荷重が加わる用途（例えばプールなど）に改修することができる。 Further, in the present embodiment, the pillar 12 is removed and the auxiliary frame 20 is arranged, but the embodiment of the present invention is not limited to this, and the auxiliary frame 20 can be used even when the pillar 12 is not removed. .. When the auxiliary frame 20 is used in this way, as shown in FIG. 6B, for example, in a portion where the span between the adjacent columns 12 is longer than that of the other portions, the auxiliary frames 20 are bridged between the columns 12. There is a case where the bending of the beam 15 is suppressed. At this time, for example, the central portion of the beam 15 is jacked up. As a result, even if a load larger than that of the other part is applied to the part where the span of the column is longer than that of the other part, the problem in terms of structural strength is less likely to occur. Therefore, the building can be refurbished for applications that require a large area and a large load capacity (for example, a pool).

また、本実施形態においては補助柱２２及び補助梁２４から形成された補助架構２０を用いているが、本発明の実施形態はこれに限らない。例えば図６（Ｃ）に示したように、補助柱を省略し、端面を柱１２の側面に固定した補助梁２８を用いてもよい。すなわち、梁１４をジャッキアップするジャッキ部材３２の受け台として機能し、梁１４を想定の応力範囲内でジャッキアップした際に破壊されるものでなければよい。補助梁２８のように、補助柱を備えない機構とすることで、必要な部材を削減することができる。 Further, in the present embodiment, the auxiliary frame 20 formed of the auxiliary pillar 22 and the auxiliary beam 24 is used, but the embodiment of the present invention is not limited to this. For example, as shown in FIG. 6C, an auxiliary beam 28 may be used in which the auxiliary pillar is omitted and the end face is fixed to the side surface of the pillar 12. That is, it does not have to function as a pedestal for the jack member 32 that jacks up the beam 14 and is not destroyed when the beam 14 is jacked up within the assumed stress range. By using a mechanism that does not have an auxiliary column, such as the auxiliary beam 28, the required members can be reduced.

なお、これらの図６（Ａ）、（Ｂ）、（Ｃ）に示した各変形例は、同様の構成を以下に示す第２実施形態に係る柱梁架構改修方法及び改修柱梁架構においても適用することができる。 In addition, each modification shown in FIGS. Can be applied.

［第２実施形態］
（柱梁架構）
第２実施形態に係る柱梁架構改修方法及び改修柱梁架構では、図７（Ａ）、（Ｂ）に示すように、補助柱４２と補助梁４４とを備えた補助架構４０が、既設の梁１４の側面に沿って２組延設されている。なお、図７（Ｂ）は図７（Ａ）に示されたＢ－Ｂ線断面図であり、図７（Ａ）は図７（Ｂ）に示されたＡ－Ａ線断面図である。 [Second Embodiment]
(Pillar beam frame)
In the column-beam frame repair method and the repaired beam-frame structure according to the second embodiment, as shown in FIGS. 7A and 7B, the auxiliary frame 40 provided with the auxiliary columns 42 and the auxiliary beams 44 is already installed. Two sets are extended along the side surface of the beam 14. 7 (B) is a sectional view taken along line BB shown in FIG. 7 (A), and FIG. 7 (A) is a sectional view taken along line AA shown in FIG. 7 (B).

第１実施形態における補助架構２０は、柱１２の撤去部１２Ｅに跨って配置されていたが、第２実施形態における補助架構４０は、撤去部１２Ｅの両側に配置されており、平面位置が一致していない。 The auxiliary frame 20 in the first embodiment is arranged so as to straddle the removed portion 12E of the pillar 12, but the auxiliary frame 40 in the second embodiment is arranged on both sides of the removed portion 12E and has one plane position. I haven't done it.

図７（Ａ）に示すように、補助柱４２は既設の柱１２の対向する２面に面して設置され、図７（Ｂ）に示すように、補助柱４２の柱頭部には補助梁４４を接合するためのブラケット４２Ａが溶接されている。なお、柱１２における対向する２面とは、補助架構４０の延設方向（図７（Ａ）ではＸ方向）に沿った２面のことである。 As shown in FIG. 7 (A), the auxiliary pillar 42 is installed facing two facing surfaces of the existing pillar 12, and as shown in FIG. 7 (B), the auxiliary pillar 42 has an auxiliary beam on the stigma. The bracket 42A for joining the 44 is welded. The two facing surfaces of the pillar 12 are two surfaces along the extension direction of the auxiliary frame 40 (X direction in FIG. 7A).

補助梁４４は、図７（Ｂ）に示すように、両端部が補助柱４２のブラケット４２Ａに接合され、中央部が凹状に変形した変形梁とされている。さらに詳述すると、補助梁４４は、一端がブラケット４２Ａに接合され、梁１４の側面に沿って延設された上段部４４Ａと、上段部４４Ａの他端に中間部材４４Ｃを介して接合された下段部４４Ｂと、を備えている。 As shown in FIG. 7B, the auxiliary beam 44 is a deformed beam in which both ends thereof are joined to the bracket 42A of the auxiliary column 42 and the central portion is deformed in a concave shape. More specifically, one end of the auxiliary beam 44 is joined to the bracket 42A, and the upper step portion 44A extending along the side surface of the beam 14 and the other end of the upper step portion 44A are joined via an intermediate member 44C. It is provided with a lower portion 44B.

上段部４４ＡはＨ形鋼で形成され、下フランジ４４ＡＨの下面が梁１４の下面と高さを揃えて形成されている。また下段部４４ＢもＨ形鋼で形成され、上フランジ４４ＢＨが梁１４の下面よりも下方に形成されている。 The upper portion 44A is formed of H-shaped steel, and the lower surface of the lower flange 44AH is formed so as to have the same height as the lower surface of the beam 14. Further, the lower portion 44B is also formed of H-shaped steel, and the upper flange 44BH is formed below the lower surface of the beam 14.

図８（Ａ）、（Ｂ）に示すように、梁１４を挟んで延設された２本の補助梁４４は、撤去部１２Ｅを跨ぐ繋ぎ梁５０によって繋がれている。すなわち、下段部４４Ｂ同士が、繋ぎ梁５０によって繋がれている。なお、図８（Ｂ）は図８（Ａ）に示されたＢ－Ｂ線断面図であり、図８（Ａ）は図８（Ｂ）に示されたＡ－Ａ線断面図である。 As shown in FIGS. 8A and 8B, the two auxiliary beams 44 extending with the beam 14 interposed therebetween are connected by a connecting beam 50 straddling the removed portion 12E. That is, the lower portions 44B are connected to each other by the connecting beam 50. 8 (B) is a sectional view taken along line BB shown in FIG. 8 (A), and FIG. 8 (A) is a sectional view taken along line AA shown in FIG. 8 (B).

さらに、撤去部１２Ｅにおいて、梁１４の下面と繋ぎ梁５０の上面との間に、梁１４が受ける荷重を繋ぎ梁５０を介して補助架構４０へ伝達する荷重伝達部材としてのコンクリートブロック３４が設けられている。 Further, in the removed portion 12E, a concrete block 34 is provided between the lower surface of the beam 14 and the upper surface of the connecting beam 50 as a load transmitting member for transmitting the load received by the beam 14 to the auxiliary frame 40 via the connecting beam 50. Has been done.

（柱梁架構改修方法）
第２実施形態に係る柱梁架構改修方法は、第１実施形態に係る柱梁架構改修方法と同様、まず図２（Ａ）、（Ｂ）に示すように、梁１４を支保工９０で支持した上で、柱１２を撤去する。その後、図７（Ａ）、（Ｂ）に示すように補助架構４０を梁１４の両側面に沿って設置し、２組の補助架構４０を繋ぎ梁５０で繋ぐ。 (How to repair columns and beams)
The beam-column frame repair method according to the second embodiment is the same as the column-beam frame repair method according to the first embodiment. First, as shown in FIGS. 2A and 2B, the beam 14 is supported by the support 90. After that, the pillar 12 is removed. After that, as shown in FIGS. 7A and 7B, auxiliary frames 40 are installed along both side surfaces of the beam 14, and two sets of auxiliary frames 40 are connected by the connecting beam 50.

その後、図８（Ａ）、（Ｂ）に示すように、繋ぎ梁５０の上面にジャッキ部材３２を設置し、梁１４をジャッキアップして、コンクリートブロック３４を設置する。 After that, as shown in FIGS. 8A and 8B, a jack member 32 is installed on the upper surface of the connecting beam 50, the beam 14 is jacked up, and the concrete block 34 is installed.

なお、上述したように第２実施形態においては、補助架構４０は梁１４の側面に沿って撤去部１２Ｅの両側に配置され、撤去部１２Ｅと平面位置が一致していない。このため、補助架構４０は、柱１２を撤去する前、あるいは支保工９０を設置する前に設置することもできる。 As described above, in the second embodiment, the auxiliary frame 40 is arranged on both sides of the removed portion 12E along the side surface of the beam 14, and the plane position does not match the removed portion 12E. Therefore, the auxiliary frame 40 can be installed before the pillar 12 is removed or before the support 90 is installed.

（作用・効果）
第２実施形態に係る柱梁架構改修方法及び改修柱梁架構では、図７（Ｂ）に示すように、補助梁４４の上段部４４Ａにおける下フランジ４４ＡＨの下面が、梁１４の下面と高さを揃えて形成されている。このため、柱梁架構１０に補助架構４０を設置しても、梁下空間が低くなることを抑制できる。これにより、梁１４の直下に設備配管９２等が配置されている場合でも、この設備配管９２と干渉することなく補助梁４４を設置することができる。または、天井高が低くなることを抑制できる。 (Action / effect)
In the column-beam frame repair method and the repaired column-beam frame according to the second embodiment, as shown in FIG. 7B, the lower surface of the lower flange 44AH in the upper portion 44A of the auxiliary beam 44 is the lower surface and the height of the beam 14. It is formed by aligning. Therefore, even if the auxiliary frame 40 is installed in the column-beam frame 10, it is possible to prevent the space under the beam from becoming low. As a result, even when the equipment pipe 92 or the like is arranged directly under the beam 14, the auxiliary beam 44 can be installed without interfering with the equipment pipe 92. Alternatively, it is possible to prevent the ceiling height from becoming low.

また、第２実施形態に係る柱梁架構改修方法及び改修柱梁架構では、１箇所の撤去部１２Ｅに対して補助梁４４が２本設置され、さらに補助柱４２が４本設置される。このため、補助梁４４及び補助柱４２それぞれの１本あたりの負担荷重を小さくして、部材寸法を小さくすることができる。このため、１部材当りの重量を小さくすることができるので、運搬効率、施工効率を高くすることができる。 Further, in the column-beam frame repair method and the repaired column-beam frame according to the second embodiment, two auxiliary beams 44 are installed for one removed portion 12E, and four auxiliary columns 42 are further installed. Therefore, the load on each of the auxiliary beam 44 and the auxiliary pillar 42 can be reduced, and the member size can be reduced. Therefore, since the weight per member can be reduced, the transportation efficiency and the construction efficiency can be improved.

また、第２実施形態に係る柱梁架構改修方法及び改修柱梁架構では、上述したように、補助架構４０と撤去部１２Ｅと平面位置が一致していない。このため、補助架構４０を設置するタイミングを任意に決定することができる。したがって、施工計画の融通性が高い。 Further, in the column-beam frame repair method and the repaired beam-frame structure according to the second embodiment, as described above, the plane positions of the auxiliary frame 40 and the removed portion 12E do not match. Therefore, the timing at which the auxiliary frame 40 is installed can be arbitrarily determined. Therefore, the flexibility of the construction plan is high.

以上説明したように、柱梁架構１０の改修にあたっては、第１実施形態及び第２実施形態の柱梁架構改修方法及び改修柱梁架構の何れかを用いることができる。また、撤去部１２Ｅが複数ある場合は、撤去部１２Ｅ毎に、第１実施形態及び第２実施形態を適宜選択して用いることができる。さらに、これらの柱梁架構改修方法及び改修柱梁架構は、建物の新築時に柱梁架構１０を補強するために用いることもできる。 As described above, in the repair of the column-beam frame 10, any one of the column-beam frame repair method and the repaired column-beam frame of the first embodiment and the second embodiment can be used. When there are a plurality of removed parts 12E, the first embodiment and the second embodiment can be appropriately selected and used for each of the removed parts 12E. Further, these beam-column frame repair methods and the repaired column-beam frame can also be used to reinforce the column-beam frame 10 at the time of new construction of a building.

１０ 柱梁架構
１２ 柱（既設柱）
２４、２６Ｂ、２８、４４ 補助梁
３２ ジャッキ部材（持上げ部材）
３４ コンクリートブロック（荷重伝達部材、持上げ部材）
５０ 繋ぎ梁 10 pillars and beams 12 pillars (existing pillars)
24, 26B, 28, 44 Auxiliary beam 32 Jack member (lifting member)
34 Concrete block (load transmission member, lifting member)
50 connecting beams

Claims (10)

既設の柱梁架構内にある既設梁を支保工で支持し既設柱を撤去する工程と、
前記既設柱の撤去部に跨って補助柱と補助梁とを備えた補助架構を設置する、又は、前記撤去部の両隣の既存柱に補助梁を架設する工程と、
前記撤去部又は前記撤去部の周囲において、前記既設梁の下面と前記補助梁との間にジャッキ部材を設置する工程と、
前記ジャッキ部材をジャッキアップして前記既設梁を支持する工程と、
を有する柱梁架構改修方法。 The process of supporting the existing beams in the existing pillar-beam frame with support work and removing the existing pillars,
A process of installing an auxiliary frame provided with an auxiliary pillar and an auxiliary beam straddling the removed portion of the existing pillar, or installing an auxiliary beam on the existing pillars on both sides of the removed portion.
A step of installing a jack member between the lower surface of the existing beam and the auxiliary beam around the removed portion or the removed portion.
The process of jacking up the jack member to support the existing beam, and
How to repair pillars and beams. 前記既設梁を前記ジャッキ部材で支持した後、
前記既設梁の下面と前記補助梁との間に荷重伝達部材を設置する工程を有する請求項１に記載の柱梁架構改修方法。 After supporting the existing beam with the jack member,
The method for repairing a column-beam frame according to claim 1, further comprising a step of installing a load transmission member between the lower surface of the existing beam and the auxiliary beam. 既設の柱梁架構内にある既設梁を支保工で支持し既設柱を撤去する工程と、
前記既設柱の撤去部の両側に、補助柱と、前記既設梁の側面に沿う補助梁と、を備えた補助架構を設置する工程と、
前記撤去部において、前記既設梁の下面と前記補助梁を繋ぐ繋ぎ梁との間にジャッキ部材を設置する工程と、
前記ジャッキ部材をジャッキアップして前記既設梁を支持する工程と、
を有する柱梁架構改修方法。 The process of supporting the existing beams in the existing pillar-beam frame with support work and removing the existing pillars,
A process of installing an auxiliary frame provided with an auxiliary column and an auxiliary beam along the side surface of the existing beam on both sides of the removed portion of the existing column.
In the removed portion, a step of installing a jack member between the lower surface of the existing beam and the connecting beam connecting the auxiliary beam, and
The process of jacking up the jack member to support the existing beam, and
How to repair pillars and beams. 前記補助梁は、前記支保工で支持した前記既設梁と直交する方向の前記既設梁に沿って構築される、請求項１～３の何れか１項に記載の柱梁架構改修方法。 The method for repairing a column-beam frame according to any one of claims 1 to 3, wherein the auxiliary beam is constructed along the existing beam in a direction orthogonal to the existing beam supported by the support work. 前記補助柱と、撤去されない既設柱とを固定する、請求項１～４の何れか１項に記載の柱梁架構改修方法。 The column-beam frame repair method according to any one of claims 1 to 4, wherein the auxiliary column and an existing column that is not removed are fixed. 前記既設柱の撤去部または前記撤去部の周囲の基礎梁から地中へ向かって、地中アンカーを打ち込む工程を有する、請求項１～５の何れか１項に記載の柱梁架構改修方法。 The column-beam frame repair method according to any one of claims 1 to 5, further comprising a step of driving an underground anchor from the removed portion of the existing pillar or the foundation beam around the removed portion toward the ground. 前記既設柱は、前記既設梁の下面まで撤去する、請求項１～６の何れか１項に記載の柱梁架構改修方法。 The method for repairing a column-beam frame according to any one of claims 1 to 6, wherein the existing column is removed to the lower surface of the existing beam. 既設の柱梁架構と、
前記柱梁架構の既設柱が撤去された撤去部に跨って設置され、補助柱と補助梁とを備えた補助架構、又は、前記柱梁架構の既設柱が撤去された撤去部の両隣の既存柱に架設された補助梁と、
既設梁の下面と前記補助梁との間において、前記撤去部のみに設けられ、前記既設梁を持ち上げた状態で固定された持上げ部材と、
を有する改修柱梁架構。 The existing column-beam frame and
Auxiliary frame with auxiliary columns and auxiliary beams installed across the removed part where the existing columns of the pillar-beam structure have been removed, or existing on both sides of the removed part where the existing columns of the column-beam structure have been removed. Auxiliary beams erected on pillars and
A lifting member provided only in the removed portion between the lower surface of the existing beam and the auxiliary beam and fixed in a state where the existing beam is lifted.
Refurbished pillar beam frame with. 既設の柱梁架構と、
補助柱及び補助梁を備え、既設梁の両側面に沿ってそれぞれ設けられた補助架構と、
前記柱梁架構の既設柱が撤去された撤去部において、前記補助架構の補助梁を繋ぐ繋ぎ梁と、
前記撤去部において、前記既設梁の下面と前記繋ぎ梁との間に設けられ、前記既設梁を持ち上げた状態で固定された持上げ部材と、
を有する改修柱梁架構。 The existing column-beam frame and
Auxiliary frames equipped with auxiliary columns and beams, and auxiliary frames provided along both sides of the existing beams,
In the removed part where the existing pillar of the pillar-beam frame was removed, the connecting beam connecting the auxiliary beam of the auxiliary frame and the connecting beam
In the removed portion, a lifting member provided between the lower surface of the existing beam and the connecting beam and fixed in a state where the existing beam is lifted, and a lifting member.
Refurbished pillar beam frame with. 前記既設柱は、前記既設梁の下面まで撤去されている、請求項８又は９に記載の改修柱梁架構。 The repaired column beam frame according to claim 8 or 9, wherein the existing column is removed to the lower surface of the existing beam.
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JP2005188243A (en) 2003-12-26 2005-07-14 Ohbayashi Corp Reinforcement structure of beam/slab in existing building
JP2006083515A (en) 2004-09-14 2006-03-30 Takenaka Komuten Co Ltd Method and device for temporarily receiving load
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