JP2011214280A - Seismatic strengthening construction method and seismic strengthening frame for existing building - Google Patents

Seismatic strengthening construction method and seismic strengthening frame for existing building Download PDF

Info

Publication number
JP2011214280A
JP2011214280A JP2010082064A JP2010082064A JP2011214280A JP 2011214280 A JP2011214280 A JP 2011214280A JP 2010082064 A JP2010082064 A JP 2010082064A JP 2010082064 A JP2010082064 A JP 2010082064A JP 2011214280 A JP2011214280 A JP 2011214280A
Authority
JP
Japan
Prior art keywords
floor
existing
column
nth
reinforcing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2010082064A
Other languages
Japanese (ja)
Other versions
JP5711897B2 (en
Inventor
Katsusato Hirano
勝識 平野
Singh Upend Ravindra
ウペンド ラヴィンドラ シング
Yukihiro Sato
幸博 佐藤
Hitoshi Sasaki
仁 佐々木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujita Corp
Original Assignee
Fujita Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujita Corp filed Critical Fujita Corp
Priority to JP2010082064A priority Critical patent/JP5711897B2/en
Publication of JP2011214280A publication Critical patent/JP2011214280A/en
Application granted granted Critical
Publication of JP5711897B2 publication Critical patent/JP5711897B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

PROBLEM TO BE SOLVED: To provide a seismic strengthening construction method and a seismic strengthening frame which can maintain a reinforcement effect by suppressing the outward bending deformation of a reinforcing column facing an existing column, when the existing column causes a shear fracture and is displaced in the axial direction by an earthquake.SOLUTION: When reinforcing columns 22 are installed up to an Nth story where N is an integer to construct a seismic strengthening frame 20 from lower stories to upper stories while connecting a frame portion in an amount of one story sequentially to an existing building 10, the height of the Nth reinforcing column 22 installed at the Nth story is set to a dimension larger than the height of an existing column 12 at the Nth story. The portion of the Nth reinforcing column 22 facing the upper part of the existing column 12 at the Nth story is connected to the upper part of the existing column 12 at the Nth story, and the upper end 2202 of the Nth reinforcing column 22 is joined to the portion of the existing column 12 positioned further upward than the existing column 12 at the Nth story with mortar M so as not to be moved in the direction approaching that portion and so as to be moved in the direction away from that portion.

Description

本発明は、鉄筋コンクリート造（ＲＣ造）もしくは鉄骨鉄筋コンクリート造（ＳＲＣ造）ラーメン構造の既存建物の耐震補強工法および耐震補強フレームに関する。   The present invention relates to a seismic reinforcement method and a seismic reinforcement frame for an existing building having a reinforced concrete structure (RC structure) or a steel frame reinforced concrete structure (SRC structure) ramen structure.

従来の耐震補強工法は既存躯体を補強することが一般的である。最も一般的な手法は耐震壁、もしくは補強ブレースの構築である。
この手法の場合、開放的な空間が閉鎖的になることから嫌われることが多い。
他に、柱の靱性を確保するために、鋼板、炭素繊維シートなどを巻きつけたりする工法や、柱の耐力を確保するために柱断面そのものを大きくすることがある。梁に関しても同様である。
このような従来技術による耐震補強の場合、建物内部での施工が主となり、建物を使いながらの施工が困難である。これは建物の使用者に多大な負担をかけることとなり、耐震補強が普及する妨げとなっている。 Conventional seismic reinforcement methods generally reinforce existing structures. The most common method is the construction of shear walls or reinforced braces.
This method is often disliked because the open space becomes closed.
In addition, in order to ensure the toughness of the column, a method of winding a steel plate, a carbon fiber sheet, or the like, or the column cross section itself may be increased in order to ensure the strength of the column. The same applies to beams.
In the case of such seismic reinforcement by the prior art, construction is mainly performed inside the building, and construction while using the building is difficult. This puts a great burden on the user of the building and hinders the spread of seismic reinforcement.

また、外側からの施工であっても、耐震壁、ブレースによる補強であれば、居ながら施工は可能となるものの、耐震補強後の採光性、外観、内部からの景色が問題となる。
そこで、本出願人は、耐震補強後の採光性、外観性に優れ、また、内部からの景色にも問題の生じない耐震補強構造、工法を提供している。 Moreover, even if it is construction from the outside, if it is reinforced with a seismic wall and braces, construction can be performed while it is in the room, but lighting, appearance, and scenery from the inside after seismic reinforcement are problems.
Therefore, the present applicant provides a seismic reinforcement structure and method that are excellent in daylighting and appearance after seismic reinforcement, and that do not cause problems in the scenery from the inside.

より詳細に説明すると、例えば図１に示すように、既存建物１０が鉄筋コンクリート造（ＲＣ造）ラーメン構造の４階建ての校舎とすると、既存建物１０は、複数の既存柱１２と、各階に設けられた既存梁１４とを含んで構成され、図１において符号１６Ａは垂壁、１６Ｂは腰壁、１６Ｃは窓（散在点で示す）であり、図９、図１０において符号１６Ｄは既存梁である。
図８に示すように、耐震補強フレーム８０は、既存建物１０の構面に隣接して構築されている。
耐震補強フレーム８０は、１階フレーム部分８０Ａと、２階フレーム部分８０Ｂとを含んでいる。
２階フレーム部分８０Ｂは、既存建物１０の全ての２階に対応させておらず、２階のうちの補強すべき箇所のみに設けられている。
各フレーム部分８０Ａ、８０Ｂは、補強柱８２と補強梁８４とを含んで構成され、各階の補強柱８２の上部は、両端の補強梁８４が結合された柱梁接合部８８となっている。また、各階の既存柱１２の上部も、両端の既存梁１４とこの既存柱１２とが結合された柱梁接合部１８となっている。 More specifically, for example, as shown in FIG. 1, if the existing building 10 is a four-story school building having a reinforced concrete (RC) ramen structure, the existing building 10 is provided with a plurality of existing columns 12 and each floor. In FIG. 1, reference numeral 16A is a vertical wall, 16B is a waist wall, 16C is a window (indicated by scattered points), and in FIGS. 9 and 10, reference numeral 16D is an existing beam. is there.
As shown in FIG. 8, the seismic reinforcement frame 80 is constructed adjacent to the construction surface of the existing building 10.
The seismic reinforcement frame 80 includes a first floor frame portion 80A and a second floor frame portion 80B.
The second-floor frame portion 80B does not correspond to all the second floors of the existing building 10, and is provided only at the locations to be reinforced in the second floor.
Each frame part 80A, 80B is comprised including the reinforcement pillar 82 and the reinforcement beam 84, and the upper part of the reinforcement pillar 82 of each floor is the column beam junction part 88 with which the reinforcement beam 84 of both ends was couple | bonded. Moreover, the upper part of the existing pillar 12 on each floor is also a column beam joint 18 in which the existing beams 14 at both ends and the existing pillars 12 are coupled.

図８、図９に示すように、１階フレーム部分８０Ａは、１階の既存柱１２の高さに相当する高さの第１補強柱８２Ａと、第１補強柱８２Ａの上部間を連結し既存梁１４に対向する第１補強梁８４Ａとからなる。
第１補強柱８２Ａの上部の柱梁接合部８８は、既存建物１０の１階の既存柱１２の上部の柱梁接合部１８に、スタッドジベル９０Ａ、後施工アンカー９０Ｂ、モルタル（またはコンクリート）９０Ｃなどを介して連結されている。
図８、図１０に示すように、２階フレーム部分８０Ｂは、２階の既存柱１２の高さに相当する高さの第２補強柱８２Ｂと、第２補強柱８２Ｂの上部間を連結し既存梁１４に対向する第２補強梁８４Ｂとからなる。
第２補強柱８２Ｂは第１補強柱８２Ａの上部の柱梁接合部８８から立設され、第２補強柱８２Ｂの上部の柱梁接合部８８は、既存建物１０の２階の既存柱１２の上部の柱梁接合部１８に、スタッドジベル９０Ａ、後施工アンカー９０Ｂ、モルタル（またはコンクリート）９０Ｃなどを介して連結されている。 As shown in FIGS. 8 and 9, the first floor frame portion 80A connects the first reinforcing pillar 82A having a height corresponding to the height of the existing pillar 12 on the first floor and the upper part of the first reinforcing pillar 82A. The first reinforcing beam 84 </ b> A faces the existing beam 14.
The column beam joint 88 at the upper part of the first reinforcing column 82A is connected to the column beam joint 18 at the upper part of the existing column 12 on the first floor of the existing building 10 with a stud diver 90A, a post-installed anchor 90B, and a mortar (or concrete) 90C. It is connected through such as.
As shown in FIGS. 8 and 10, the second floor frame portion 80B connects the second reinforcement pillar 82B having a height corresponding to the height of the existing pillar 12 on the second floor and the upper part of the second reinforcement pillar 82B. The second reinforcing beam 84B faces the existing beam 14.
The second reinforcing column 82B is erected from the column beam joint 88 at the upper part of the first reinforcement column 82A, and the column beam junction 88 at the upper part of the second reinforcement column 82B is connected to the existing column 12 on the second floor of the existing building 10. It is connected to the upper column beam joint 18 via a stud diver 90A, a post-construction anchor 90B, a mortar (or concrete) 90C, and the like.

特開２００８−２４８５９２JP 2008-244852 A 特開２００９−２４９８５１JP2009-249851

ところで、図１１に示すように、既存建物１０の１階の既存柱１２に対向して第１補強柱８２Ａが設けられている場合、地震による被災で１階の既存柱１２がせん断破壊を起こし崩壊して軸方向に変位を生じると、第１補強柱８２Ａは既存建物１０の重量である偏心軸力を受けて外側に曲げ変形を起こし、第１補強柱８２Ａの上部と既存柱１２の上部との間に目開きが生じ、耐震補強フレーム８０による補強効果が低減する。
また、図１２に示すように、既存建物１０の１階の既存柱１２に対向して第１補強柱８０Ａが、２階の既存柱１２に対向して第２補強柱８０Ｂが設けられている場合、地震による被災で２階の既存柱１２がせん断破壊を起こし崩壊して軸方向に変位を生じると、２階の第２補強柱８０Ｂは偏心軸力を受けて外側に曲げ変形を起こし、第２補強柱８０Ｂの上部と２階の既存柱１２の上部との間、および第２補強柱８０Ｂと第１補強柱８０Ａとの接合部に目開きが生じ、耐震補強フレーム８０による補強効果が低減する。
本発明はかかる事情に鑑み成されたものであり、本発明の目的は、地震による被災で、既存の柱がせん断破壊を起こし軸方向に変位を生じた場合、この柱に対向する補強柱の外側への曲げ変形を抑制し、補強効果を維持できる耐震補強工法および耐震補強フレームを提供することにある。 By the way, as shown in FIG. 11, when the 1st reinforcement pillar 82A is provided facing the existing pillar 12 of the 1st floor of the existing building 10, the existing pillar 12 of the 1st floor raise | generates a shear failure by the earthquake damage. When collapsed and axially displaced, the first reinforcing column 82A is subjected to an eccentric axial force that is the weight of the existing building 10 and bends outward, and the upper portion of the first reinforcing column 82A and the upper portion of the existing column 12 A mesh opening is generated between them, and the reinforcing effect of the seismic reinforcing frame 80 is reduced.
Further, as shown in FIG. 12, a first reinforcing column 80A is provided facing the existing column 12 on the first floor of the existing building 10, and a second reinforcing column 80B is provided facing the existing column 12 on the second floor. In this case, when the existing pillar 12 on the second floor causes a shear failure and collapses due to the earthquake damage, the second reinforcing pillar 80B on the second floor receives an eccentric axial force and causes an outward bending deformation. Openings occur between the upper part of the second reinforcing column 80B and the upper part of the existing column 12 on the second floor, and at the joint between the second reinforcing column 80B and the first reinforcing column 80A, and the reinforcing effect by the seismic reinforcing frame 80 is obtained. To reduce.
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a reinforcing column opposite to this column when an existing column undergoes shear fracture and is displaced in the axial direction due to earthquake damage. An object of the present invention is to provide a seismic strengthening method and a seismic strengthening frame capable of suppressing bending deformation to the outside and maintaining a reinforcing effect.

上記目的を達成するため、本発明の耐震補強工法は、鉄筋コンクリート造もしくは鉄骨鉄筋コンクリート造ラーメン構造の既存建物の１階の既存柱に対向しその上部が既存柱に連結された第１補強柱を含む１階フレーム部分を構築し、１階フレーム部分を構築したならば、第１補強柱の上部に立設され既存建物の２階の既存柱に対向しその上部が既存柱に連結された第２補強柱を含む２階フレーム部分を構築し、このように下層階から上層階へと１階分のフレーム部分を順次既存建物に連結しつつ既存建物の構面に隣接させて耐震補強フレームを構築していくに際して、Ｎを整数として補強柱をＮ階まで設ける場合に、Ｎ階に設ける第Ｎ補強柱の高さを、Ｎ階の既存柱の高さよりも大きい寸法に設定し、Ｎ階の既存柱の上部に対向する第Ｎ補強柱の箇所を、Ｎ階の既存柱の上部に連結するとともに、第Ｎ補強柱の上端をＮ階の既存柱よりも上方に位置する既存柱の箇所に、該箇所へ近づく方向へ移動不能にかつ該箇所から離れる方向へ移動可能に接合することを特徴とする。
また、本発明の耐震補強工法は、鉄筋コンクリート造もしくは鉄骨鉄筋コンクリート造ラーメン構造の既存建物の１階の既存柱に対向する第１補強柱を複数立設すると共に、それら隣り合う第１補強柱の上部間を、既存建物の１階の既存梁に対向する第１補強梁で連結し、第１補強柱と既存柱の上部とを連結することで、既存建物に連結された１階フレーム部分を構築し、１階フレーム部分を構築したならば、既存建物の２階の既存柱に対向する第２補強柱を第１補強柱の上部に立設すると共に、それら隣り合う第２補強柱の上部間を、２階の既存梁に対向する第２補強梁で連結し、第２補強柱と２階の既存柱の上部とを連結することで、既存建物に連結された２階フレーム部分を構築し、このように下層階から上層階へと１階分のフレーム部分を順次既存建物に連結しつつ既存建物の構面に隣接させて耐震補強フレームを構築していくに際して、Ｎを整数として補強柱をＮ階まで設ける場合に、Ｎ階に設ける第Ｎ補強柱の高さを、Ｎ階の既存柱の高さよりも大きい寸法に設定し、Ｎ階の既存柱の上部に対向する第Ｎ補強柱の箇所を、Ｎ階の既存柱の上部に連結するとともに、第Ｎ補強柱の上端をＮ階の既存柱よりも上方に位置する既存柱の箇所に、該箇所へ近づく方向へ移動不能にかつ該箇所から離れる方向へ移動可能に接合することを特徴とする。
また、本発明は、鉄筋コンクリート造もしくは鉄骨鉄筋コンクリート造ラーメン構造の既存建物の１階の既存柱に対向しその上部が既存柱に連結された第１補強柱を含んで構築された１階フレーム部分と、第１補強柱の上部に立設され既存建物の２階の既存柱に対向しその上部が既存柱に連結された第２補強柱を含んで構築された２階フレーム部分と、このように下層階から上層階へと１階分のフレーム部分を順次既存建物に連結しつつ既存建物の構面に隣接させて構築された耐震補強フレームであって、Ｎを整数として補強柱をＮ階まで設ける場合に、Ｎ階に設ける第Ｎ補強柱の高さは、Ｎ階の既存柱の高さよりも大きい寸法に設定され、Ｎ階の既存柱の上部に対向する第Ｎ補強柱の箇所が、Ｎ階の既存柱の上部に連結されるとともに、第Ｎ補強柱の上端がＮ階の既存柱よりも上方に位置する既存柱の箇所に、該箇所へ近づく方向へ移動不能にかつ該箇所から離れる方向へ移動可能に接合されていることを特徴とする。
また、本発明は、鉄筋コンクリート造もしくは鉄骨鉄筋コンクリート造ラーメン構造の既存建物の１階の既存柱に対向する第１補強柱を複数立設すると共に、それら隣り合う第１補強柱の上部間を、既存建物の１階の既存梁に対向する第１補強梁で連結し、第１補強柱と既存柱の上部とを連結することで構築された１階フレーム部分と、既存建物の２階の既存柱に対向する第２補強柱を前記第１補強柱の上部に立設すると共に、それら隣り合う第２補強柱の上部間を、２階の既存梁に対向する第２補強梁で連結し、第２補強柱と２階の既存柱の上部とを連結することで構築された２階フレーム部分と、このように下層階から上層階へと１階分のフレーム部分を順次既存建物に連結しつつ既存建物の構面に隣接させて構築された耐震補強フレームであって、Ｎを整数として補強柱をＮ階まで設ける場合に、Ｎ階に設ける第Ｎ補強柱の高さは、Ｎ階の既存柱の高さよりも大きい寸法に設定され、Ｎ階の既存柱の上部に対向する第Ｎ補強柱の箇所が、Ｎ階の既存柱の上部に連結されるとともに、第Ｎ補強柱の上端がＮ階の既存柱よりも上方に位置する既存柱の箇所に、該箇所へ近づく方向へ移動不能にかつ該箇所から離れる方向へ移動可能に接合されていることを特徴とする。 In order to achieve the above object, the seismic strengthening method of the present invention includes a first reinforcing column facing an existing column on the first floor of an existing building of a reinforced concrete structure or a steel reinforced concrete frame structure and having an upper portion connected to the existing column. If the first-floor frame part is constructed, and the first-floor frame part is constructed, the second floor is erected on the upper part of the first reinforcing pillar and faces the existing pillar on the second floor of the existing building, and the upper part is connected to the existing pillar. Build the second-floor frame part including the reinforcement pillars, and build the earthquake-proof reinforcement frame by connecting the frame part of the first floor to the existing building sequentially from the lower floor to the upper floor in this way, adjacent to the construction surface of the existing building When the reinforcement pillars are provided up to the Nth floor, where N is an integer, the height of the Nth reinforcement pillar provided on the Nth floor is set to a dimension larger than the height of the existing pillars on the Nth floor. Nth supplement facing the top of the existing pillar The column part is connected to the upper part of the existing column on the Nth floor, and the upper end of the Nth reinforcing column is made immovable in the direction of the existing column located above the existing column on the Nth floor in the direction approaching the part. And it joins so that a movement in the direction away from this location is possible.
In addition, the seismic reinforcement method of the present invention is provided with a plurality of first reinforcement columns facing the existing columns on the first floor of an existing building of a reinforced concrete structure or a steel-framed reinforced concrete frame structure, and upper portions of the adjacent first reinforcement columns. Connect the first reinforcement beam facing the existing beam on the first floor of the existing building, and connect the first reinforcement column and the upper part of the existing column to construct the first floor frame part connected to the existing building Once the first-floor frame part is constructed, the second reinforcing column facing the existing column on the second floor of the existing building is erected on the upper part of the first reinforcing column and between the upper parts of the adjacent second reinforcing columns. Are connected by the second reinforcement beam facing the existing beam on the second floor, and the second reinforcement column and the upper part of the existing column on the second floor are connected to construct the second-floor frame part connected to the existing building. In this way, the frame for one floor from the lower floor to the upper floor When building a seismic retrofit frame by connecting the minutes to the existing building and adjoining the existing building structure, if N is an integer and the reinforcement pillars are provided up to the Nth floor, the Nth reinforcement pillar provided on the Nth floor Is set to a dimension larger than the height of the existing pillars on the Nth floor, and the location of the Nth reinforcing pillar facing the upper part of the existing pillars on the Nth floor is connected to the upper part of the existing pillars on the Nth floor, The upper end of the N-th reinforcing column is joined to the existing column located above the existing column on the N floor so as not to move in the direction approaching the location and to move away from the location. .
In addition, the present invention includes a first-floor frame portion constructed to include a first reinforcing column that is opposed to an existing column on the first floor of an existing building of a reinforced concrete structure or a steel reinforced concrete frame structure, and whose upper portion is connected to the existing column. A second-floor frame part constructed to include a second reinforcing pillar standing on the upper part of the first reinforcing pillar and facing the existing pillar on the second floor of the existing building, the upper part being connected to the existing pillar; and A seismic reinforcement frame constructed by connecting the frame part of the first floor from the lower floor to the upper floor to the existing building in order, adjacent to the construction surface of the existing building, where N is an integer and the reinforcing columns are connected to the N floor In the case of providing, the height of the Nth reinforcing column provided on the Nth floor is set to a dimension larger than the height of the existing column on the Nth floor, and the location of the Nth reinforcing column facing the upper part of the existing column on the Nth floor is It is connected to the upper part of the existing pillar on the Nth floor and The upper end of the reinforcing column is joined to an existing column located above the existing column on the N floor so as not to move in a direction approaching the location and to move in a direction away from the location. .
In addition, the present invention sets up a plurality of first reinforcing columns facing the existing columns on the first floor of an existing building having a reinforced concrete structure or a steel-framed reinforced concrete frame structure, and between the adjacent upper portions of the first reinforcing columns. Connected with the first reinforcing beam facing the existing beam on the first floor of the building, and connected the first reinforcing column and the upper part of the existing column, the first floor frame part, and the existing column on the second floor of the existing building A second reinforcing column opposite to the first reinforcing column, and an upper portion of the adjacent second reinforcing columns connected by a second reinforcing beam facing an existing beam on the second floor, The second floor frame part constructed by connecting the two reinforcing pillars and the upper part of the existing pillars on the second floor, and the frame part for the first floor from the lower floor to the upper floor in this way are sequentially connected to the existing building. Seismic reinforcement frame built adjacent to the construction surface of an existing building In the case where N is an integer and reinforcing columns are provided up to the Nth floor, the height of the Nth reinforcing column provided on the Nth floor is set to be larger than the height of the existing pillars on the Nth floor, The location of the Nth reinforcing column facing the upper part of the column is connected to the upper part of the existing column on the Nth floor, and the upper end of the Nth reinforcing column is positioned on the existing column located above the existing column on the Nth floor Further, it is characterized in that it is joined so as not to move in a direction approaching the part and to be movable in a direction away from the part.

本発明によれば、地震による被災で既存建物のＮ階の既存柱がせん断破壊を起こして軸方向に変位し、第Ｎ補強柱が偏心軸力を受けて外側に曲げ変形しようとすると、第Ｎ補強柱の上端が、Ｎ階の既存柱よりも上方に位置する既存柱の箇所にあたり、第Ｎ補強柱の外側への曲げ変形が抑制される。
したがって、第Ｎ補強柱と第（Ｎ−１）補強柱との接合部における目開きや、第Ｎ補強柱と既存柱との接合部の目開きを抑制でき、耐震補強フレームによる補強効果を維持する上で有利となる。
また、第Ｎ補強柱の外側への曲げ変形が抑制されるので、第Ｎ補強柱の上部とＮ階の既存柱の上部とを連結するための部材への負担を軽減できる。したがって、それら部材の数量を減少でき、コストダウンを図る上でも有利となる。 According to the present invention, when an N-th existing column of an existing building is sheared and displaced in the axial direction due to an earthquake damage, the N-th reinforcing column receives an eccentric axial force and is bent outward. The upper end of the N reinforcing column hits the existing column located above the existing column on the N floor, and the bending deformation to the outside of the Nth reinforcing column is suppressed.
Therefore, the opening at the joint between the Nth reinforcement column and the (N-1) th reinforcement column and the opening at the junction between the Nth reinforcement column and the existing column can be suppressed, and the reinforcement effect by the seismic reinforcement frame is maintained. This is advantageous.
Moreover, since the bending deformation to the outside of the Nth reinforcing column is suppressed, it is possible to reduce the burden on the member for connecting the upper part of the Nth reinforcing column and the upper part of the existing column on the Nth floor. Therefore, the number of these members can be reduced, which is advantageous for cost reduction.

耐震補強の対象となる既存建物の正面図である。It is a front view of the existing building used as the object of seismic reinforcement. 第１の実施の形態の耐震補強フレームを構築した状態の耐震補強フレームと既存建物の正面図である。It is a front view of an earthquake-proof reinforcement frame and the existing building of the state which constructed the earthquake-proof reinforcement frame of a 1st embodiment. 第１補強柱と既存建物の連結関係の説明図である。It is explanatory drawing of the connection relation of a 1st reinforcement pillar and the existing building. 第１、第２補強柱と既存建物の連結関係の説明図である。It is explanatory drawing of the connection relation of a 1st, 2nd reinforcement pillar and an existing building. 第２の実施の形態の耐震補強フレームを構築した状態の耐震補強フレームと既存建物の正面図である。It is a front view of an earthquake-proof reinforcement frame and the existing building of the state which constructed the earthquake-proof reinforcement frame of a 2nd embodiment. 第１補強柱と既存建物の連結関係の説明図である。It is explanatory drawing of the connection relation of a 1st reinforcement pillar and the existing building. 第１、第２補強柱と既存建物の連結関係の説明図である。It is explanatory drawing of the connection relation of a 1st, 2nd reinforcement pillar and an existing building. 従来の耐震補強フレームを構築した状態の耐震補強フレームと既存建物の正面図である。It is a front view of a seismic reinforcement frame in the state where the conventional seismic reinforcement frame was constructed, and an existing building. 従来の第１補強柱と既存建物の連結関係の説明図である。It is explanatory drawing of the connection relation of the conventional 1st reinforcement pillar and the existing building. 従来の第１、第２補強柱と既存建物の連結関係の説明図である。It is explanatory drawing of the connection relation of the conventional 1st, 2nd reinforcement pillar, and the existing building. １階の既存柱がせん断破壊した際の従来の第１補強柱の説明図である。It is explanatory drawing of the conventional 1st reinforcement pillar when the existing pillar of the 1st floor carries out a shear failure. ２階の既存柱がせん断破壊した際の従来の第１補強柱の説明図である。It is explanatory drawing of the conventional 1st reinforcement pillar when the existing pillar of the 2nd floor carries out a shear failure.

以下に本発明の実施の形態について、添付図面を参照しつつ詳細に説明する。
図１は本発明の耐震補強工法の対象となる建物の具体例を示した正面図を示し、既存建物１０の構成は前記と同様であり、既存柱１２、既存梁１４、垂壁１６Ａ、腰壁１６Ｂ、窓（斜線で示す）１６Ｃなどを含んで構成されている。
図２は、構築された第１の実施の形態の耐震補強フレーム２０の正面図を示している。
図３、図４に示すように、耐震補強フレーム２０は、既存建物１０の構面に隣接して（近接して）構築されている。
耐震補強フレーム２０は既存建物１０の構面と平行する面上に位置しており、１階フレーム部分２０Ａと、２階フレーム部分２０Ｂとを含んでいる。
各フレーム部分２０Ａ、２０Ｂは、補強柱２２と補強梁２４とを含んで構成され、補強柱２２と補強梁２４は、鉄骨鉄筋コンクリート製、あるいは鉄筋コンクリート製、あるいは鉄骨製である。
各階の補強柱２２の上部は、両端の補強梁２４とこの補強柱２２とが結合された柱梁接合部２８となっている。また、各階の既存柱１２の上部も、両端の既存梁１４とこの既存柱１２とが結合された柱梁接合部１８となっている。 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a front view showing a specific example of a building to be subjected to the seismic reinforcement method of the present invention. The configuration of the existing building 10 is the same as described above, and the existing column 12, the existing beam 14, the hanging wall 16A, the waist It includes a wall 16B, a window (shown by diagonal lines) 16C, and the like.
FIG. 2 shows a front view of the constructed seismic reinforcement frame 20 of the first embodiment.
As shown in FIGS. 3 and 4, the seismic reinforcement frame 20 is constructed adjacent to (close to) the construction surface of the existing building 10.
The seismic reinforcement frame 20 is located on a plane parallel to the construction surface of the existing building 10 and includes a first floor frame portion 20A and a second floor frame portion 20B.
Each of the frame portions 20A and 20B includes a reinforcing column 22 and a reinforcing beam 24, and the reinforcing column 22 and the reinforcing beam 24 are made of steel reinforced concrete, reinforced concrete, or steel frame.
The upper part of the reinforcing column 22 on each floor is a column beam joint 28 in which the reinforcing beam 24 at both ends and the reinforcing column 22 are coupled. Moreover, the upper part of the existing pillar 12 on each floor is also a column beam joint 18 in which the existing beams 14 at both ends and the existing pillars 12 are coupled.

図２に示すように、１階フレーム部分２０Ａは、１階の既存柱１２に対向する第１補強柱２２Ａと、第１補強柱２２Ａの上部間を連結し１階の既存梁１４に対向する第１補強梁２４Ａとを含んでいる。
なお、図３、図４に示すように、既存柱１２の既存基礎１９に接合させて補強用基礎２９が設けられ、第１補強柱２２Ａはそれら基礎１９，２９の上から立設され、複数本の柱脚アンカー２９Ａの一部が第１補強柱２２Ａの下部から既存基礎１９に打ち込まれ、残りの柱脚アンカー２９Ａが第１補強柱２２Ａの下部から補強用基礎２９に打ち込まれ、それら基礎１９、２９に連結されている。
第１補強柱２２Ａが並べられた方向において両端の２本の第１補強柱２２Ａを除いた残りの第１補強柱２２Ａは、その高さが、１階の既存柱１２と同じ寸法で設定されている。
また、両端に位置する２本の第１補強柱２２Ａは、その高さが、１階の既存柱１２のよりも大きい寸法に設定されている。 As shown in FIG. 2, the first floor frame portion 20 </ b> A connects the first reinforcement pillar 22 </ b> A facing the existing pillar 12 on the first floor and the upper part of the first reinforcement pillar 22 </ b> A to face the existing beam 14 on the first floor. The first reinforcing beam 24A is included.
As shown in FIGS. 3 and 4, a reinforcing foundation 29 is provided by being joined to the existing foundation 19 of the existing pillar 12, and the first reinforcing pillar 22 </ b> A is erected from above the foundations 19, 29. A part of the column base anchor 29A is driven into the existing foundation 19 from the lower portion of the first reinforcing column 22A, and the remaining column base anchor 29A is driven into the reinforcing foundation 29 from the lower portion of the first reinforcing column 22A. 19 and 29.
The remaining first reinforcing columns 22A excluding the two first reinforcing columns 22A at both ends in the direction in which the first reinforcing columns 22A are arranged have the same dimensions as the existing columns 12 on the first floor. ing.
Moreover, the height of the two first reinforcing columns 22A located at both ends is set to be larger than that of the existing columns 12 on the first floor.

図３に示すように、両端の２本の第１補強柱２２Ａの上部をなす柱梁接合部２８は、１階の既存柱１２の上部をなす柱梁接合部１８にスタッドジベル９０Ａ、後施工アンカー９０Ｂ、モルタル（またはコンクリート）９０Ｃなどを介して連結されている。本実施の形態では、柱梁接合部２８の両側に位置する第１補強梁２４Ａの箇所も１階の既存梁１４に連結されている。
また、柱梁接合部２８から突出する第１補強柱２２Ａの上端２２０２はモルタルＭを介して１階の既存柱１２の上方の既存柱１２の箇所に、すなわち、２階の既存柱１２の箇所に、該箇所へ近づく方向へ移動不能にかつ該箇所から離れる方向へ移動可能にモルタルＭにより接合されている。
また、両端の２本の第１補強柱２２Ａを除いた残りの第１補強柱２２Ａの上端の柱梁接合部２８は、１階の既存柱１２の上端の柱梁接合部１８に、スタッドジベル９０Ａ、後施工アンカー９０Ｂ、モルタル（またはコンクリート）９０Ｃなどを介して連結されている。本実施の形態では、柱梁接合部２８に近接する第１補強梁２４Ａの箇所も１階の既存梁１４に連結されている。 As shown in FIG. 3, the column beam joint 28 that forms the upper part of the two first reinforcing columns 22A at both ends is connected to the column beam joint 18 that forms the upper part of the existing column 12 on the first floor. It is connected via an anchor 90B, mortar (or concrete) 90C and the like. In the present embodiment, the locations of the first reinforcing beams 24A located on both sides of the column beam joint 28 are also connected to the existing beams 14 on the first floor.
Further, the upper end 2202 of the first reinforcing column 22A protruding from the column beam joint portion 28 is located at the location of the existing column 12 above the existing column 12 on the first floor via the mortar M, that is, the location of the existing column 12 on the second floor. In addition, the mortar M is joined so as not to move in a direction approaching the location and to move away from the location.
The column beam joint 28 at the upper end of the remaining first reinforcement column 22A excluding the two first reinforcement columns 22A at both ends is connected to the column beam junction 18 at the upper end of the existing column 12 on the first floor. 90A, post-construction anchor 90B, mortar (or concrete) 90C, and the like. In the present embodiment, the location of the first reinforcing beam 24A adjacent to the column beam joint 28 is also connected to the existing beam 14 on the first floor.

２階フレーム部分１０Ｂは１階フレーム部分が構築された後に構築されており、２階フレーム部分は、既存建物１０の全ての２階に対応させておらず、２階のうちの補強すべき箇所のみに設けられている。
図２に示すように、２階フレーム部分は、２階の既存柱１２に対向する第２補強柱２２Ｂと、第２補強柱２２Ｂの上部間を連結し２階の既存梁１４に対向する第２補強梁２４Ｂとを含んでいる。 The second-floor frame portion 10B is constructed after the first-floor frame portion is constructed, and the second-floor frame portion does not correspond to all the second floors of the existing building 10, and is a portion to be reinforced in the second floor. Only provided.
As shown in FIG. 2, the second floor frame portion connects the second reinforcement pillar 22B facing the existing pillar 12 on the second floor and the upper part of the second reinforcement pillar 22B and faces the existing beam 14 on the second floor. 2 reinforcing beams 24B.

第２補強柱２２Ｂは第１補強柱２２Ａの上部をなす柱梁接合部２８から立設されている。
図４に示すように、第２補強柱２２Ｂは、その高さが、２階の既存柱１２のよりも大きい寸法に設定されている。
各第２補強柱２２Ｂの上部をなす柱梁接合部２８は、２階の既存柱１２の上部をなす柱梁接合部１８にスタッドジベル９０Ａ、後施工アンカー９０Ｂ、モルタル（またはコンクリート）９０Ｃなどを介して連結している。本実施の形態では、柱梁接合部２８に近接する第２補強梁２４Ｂの箇所も２階の既存梁１４に連結されている。
また、柱梁接合部２８から突出する第２補強柱２２Ｂの上端２２０４は、モルタルＭを介して２階の既存柱１２の上方の既存の既存柱１２の箇所に、すなわち、３階の既存柱１２の箇所に、該箇所へ近づく方向へ移動不能にかつ該箇所から離れる方向へ移動可能にモルタルＭにより接合されている。 The second reinforcing column 22B is erected from a column beam joint 28 that forms the upper part of the first reinforcing column 22A.
As shown in FIG. 4, the height of the second reinforcing pillar 22B is set to be larger than that of the existing pillar 12 on the second floor.
The column beam joint 28 forming the upper part of each second reinforcing column 22B includes a stud beam 90A, a post-installed anchor 90B, a mortar (or concrete) 90C, etc. on the column beam joint 18 forming the upper part of the existing column 12 on the second floor. Are connected through. In the present embodiment, the location of the second reinforcing beam 24B adjacent to the column beam joint 28 is also connected to the existing beam 14 on the second floor.
Further, the upper end 2204 of the second reinforcing column 22B protruding from the column beam joint portion 28 is located at the location of the existing column 12 above the existing column 12 on the second floor via the mortar M, that is, the existing column on the third floor. The mortar M is joined to the twelve locations so as not to move in a direction approaching the location and to move away from the location.

本実施の形態によれば次の効果が奏される。
まず、１階の両端に位置する２本の第１補強柱２２Ａについて説明する。
例えば、地震による被災で、図３に示す既存建物１０の１階の既存柱１２が、図１１に示すように崩壊しせん断破壊を起こすことで軸方向に変位し、第１補強柱２２Ａが既存建物１０の重量である偏心軸力を受け外側に曲げ変形しようとすると、第１補強柱２２Ａの上端２２０２がモルタルＭを介して２階の既存柱１２にあたり、第１補強柱２２Ａの外側への曲げ変形が抑制される。したがって、柱梁接合部１８、２８間の目開きを抑制でき、耐震補強フレーム２０による補強効果を維持する上で有利となる。
また、第１補強柱２２Ａの外側への曲げ変形が抑制されるので、第１補強柱２２Ａの上部と１階の既存柱１２の上部とを連結するための部材９０Ａ、９０Ｂへの負担を軽減できる。したがって、第１補強柱２２Ａの上部と１階の既存柱１２の上部とを連結するために用いる、本実施の形態では、第１補強柱２２Ａに近接する第１補強梁２４Ａ箇所と既存梁１４とを連結するためにも用いる打設作業が困難な後施工アンカー９０Ｂの数量を減少でき、コストダウンを図る上でも有利となる。 According to the present embodiment, the following effects are achieved.
First, the two first reinforcing pillars 22A located at both ends of the first floor will be described.
For example, due to an earthquake, the existing pillar 12 on the first floor of the existing building 10 shown in FIG. 3 is displaced in the axial direction by collapsing and causing shear failure as shown in FIG. When an eccentric axial force that is the weight of the building 10 is applied to bend and deform outward, the upper end 2202 of the first reinforcing column 22A hits the existing column 12 on the second floor via the mortar M, and the outer side of the first reinforcing column 22A Bending deformation is suppressed. Therefore, the opening between the column beam joints 18 and 28 can be suppressed, which is advantageous in maintaining the reinforcing effect of the seismic reinforcement frame 20.
In addition, since bending deformation to the outside of the first reinforcing column 22A is suppressed, the burden on the members 90A and 90B for connecting the upper portion of the first reinforcing column 22A and the upper portion of the existing column 12 on the first floor is reduced. it can. Therefore, in the present embodiment, which is used to connect the upper portion of the first reinforcing column 22A and the upper portion of the existing first column 12 on the first floor, the first reinforcing beam 24A near the first reinforcing column 22A and the existing beam 14 are used. The number of post-construction anchors 90B, which are difficult to place, also used for connecting the two, can be reduced, which is advantageous for cost reduction.

次に、第２補強柱２２Ｂについて説明する。
例えば、地震による被災で、図４に示す既存建物１０の２階の既存柱１２が、図１２に示すようにせん断破壊を起こして軸方向に変位し、第２補強柱２２Ｂが偏心軸力受け外側に曲げ変形しようとすると、第２補強柱２２Ｂの上端２２０４がモルタルＭを介して３階の既存柱１２にあたり、第２補強柱２２Ｂの外側への曲げ変形が抑制される。したがって、２階における柱梁接合部１８、２８間の目開き、および第２補強柱２２Ｂと第１補強柱２２Ａとの接合部における目開きを抑制でき、耐震補強フレーム２０による補強効果を維持する上で有利となる。
また、前記と同様に、第２補強柱２２Ａの上部と２階の既存柱１２の上部とを連結するために用いる、本実施の形態では、第２補強柱２２Ａに近接する第１補強梁２４Ａ箇所と既存梁とを連結するためにも用いる打設作業が困難な後施工アンカー９０Ｂの数量を減少でき、コストダウンを図る上でも有利となる。 Next, the 2nd reinforcement pillar 22B is demonstrated.
For example, due to an earthquake, the existing pillar 12 on the second floor of the existing building 10 shown in FIG. 4 undergoes shear failure as shown in FIG. 12 and is displaced in the axial direction, and the second reinforcing pillar 22B receives the eccentric axial force. When bending outward is attempted, the upper end 2204 of the second reinforcing column 22B hits the existing column 12 on the third floor via the mortar M, and bending deformation to the outside of the second reinforcing column 22B is suppressed. Therefore, the opening between the column beam joints 18 and 28 on the second floor and the opening at the joint between the second reinforcing column 22B and the first reinforcing column 22A can be suppressed, and the reinforcing effect by the seismic reinforcement frame 20 is maintained. This is advantageous.
Similarly to the above, in the present embodiment, the first reinforcing beam 24A adjacent to the second reinforcing column 22A is used to connect the upper portion of the second reinforcing column 22A and the upper portion of the existing column 12 on the second floor. The number of post-construction anchors 90B, which are difficult to place, which is also used to connect the spot and the existing beam, can be reduced, which is advantageous in reducing costs.

次に、第２の実施の形態について説明する。
図５は、構築された第２の実施の形態の耐震補強フレーム３０の正面図を示している。
図６、図７に示すように、耐震補強フレーム３０は、既存建物１０の構面に近接して構築されている。
第１の実施の形態と同様な箇所、部材に同一の符号を付し、その説明を省略すると、耐震補強フレーム３０は既存建物１０の構面と平行する面上に位置しており、１階フレーム部分３０Ａと、２階フレーム部分３０Ｂとを含んでいる。 Next, a second embodiment will be described.
FIG. 5 shows a front view of the seismic reinforcement frame 30 of the second embodiment constructed.
As shown in FIGS. 6 and 7, the seismic reinforcement frame 30 is constructed close to the construction surface of the existing building 10.
If the same reference numerals are given to the same parts and members as in the first embodiment and the description thereof is omitted, the seismic reinforcement frame 30 is located on a plane parallel to the construction surface of the existing building 10, and the first floor It includes a frame portion 30A and a second floor frame portion 30B.

図５に示すように、１階フレーム部分３０Ａは、１階の既存柱１２に対向する第１補強柱２２Ｃと、第１補強柱２２Ｃの上部間を連結し１階の既存梁１４に対向する第１補強梁２４Ｃとを含んでおり、第１補強柱２２Ｃが並べられた方向において両端の２本の第１補強柱２２Ｃを除いた残りの第１補強柱２２Ｃは、その高さが、１階の既存柱１２と同じ寸法で設定されている。
また、両端に位置する２本の第１補強柱２２Ｃは、その高さが、１階の既存柱１２のよりも大きい寸法に設定されている。本実施の形態では、２本の第１補強柱２２Ｃの高さは、１階の既存柱１２の高さに２階の既存柱１２の高さを加えた寸法で形成されている。 As shown in FIG. 5, the first-floor frame portion 30 </ b> A connects the first reinforcement pillar 22 </ b> C facing the existing pillar 12 on the first floor and the upper part of the first reinforcement pillar 22 </ b> C to face the existing beam 14 on the first floor. The remaining first reinforcing pillars 22C excluding the two first reinforcing pillars 22C at both ends in the direction in which the first reinforcing pillars 22C are arranged have a height of 1 It is set with the same dimensions as the existing pillar 12 on the floor.
Moreover, the height of the two first reinforcing columns 22C located at both ends is set to be larger than that of the existing columns 12 on the first floor. In the present embodiment, the height of the two first reinforcing pillars 22C is formed to have a dimension obtained by adding the height of the existing pillar 12 on the first floor to the height of the existing pillar 12 on the first floor.

図６に示すように、両端の２本の第１補強柱２２Ｃの上下中間部をなす柱梁接合部２８は、１階の既存柱１２の上部をなす柱梁接合部１８にスタッドジベル９０Ａ、後施工アンカー９０Ｂ、モルタル（またはコンクリート）９０Ｃなどを介して連結されている。本実施の形態では、柱梁接合部２８に近接する第１補強梁２４Ｃの箇所も１階の既存梁１４に連結されている。
また、柱梁接合部２８から突出する第１補強柱２２Ｃの上端２２０６はモルタルＭを介して１階の既存柱１２の上方の既存柱１２の箇所に、すなわち、２階の既存柱１２の上部をなす柱梁接合部１８に、該柱梁接合部１８へ近づく方向へ移動不能にかつ該柱梁接合部１８から離れる方向へ移動可能にモルタルＭにより接合されている。
また、両端の２本の第１補強柱２２Ｃを除いた残りの第１補強柱２２Ｃの上部の柱梁接合部２８は、１階の既存柱１２の上端の柱梁接合部１８に、スタッドジベル９０Ａ、後施工アンカー９０Ｂ、モルタル（またはコンクリート）９０Ｃなどを介して連結されている。本実施の形態では、柱梁接合部２８に近接する第１補強梁２４Ｃの箇所も１階の既存梁１４に連結されている。 As shown in FIG. 6, the column beam joint 28 that forms the upper and lower middle portions of the two first reinforcing columns 22C at both ends is connected to the column beam joint 18 that forms the upper portion of the existing column 12 on the first floor, The post-construction anchor 90B and the mortar (or concrete) 90C are connected. In the present embodiment, the location of the first reinforcing beam 24C adjacent to the column beam joint 28 is also connected to the existing beam 14 on the first floor.
Further, the upper end 2206 of the first reinforcing column 22C protruding from the beam-column joint portion 28 is located at the location of the existing column 12 above the existing column 12 on the first floor via the mortar M, that is, the upper portion of the existing column 12 on the second floor. Are joined by a mortar M so as not to move in a direction approaching the column beam joint 18 and to move away from the column beam joint 18.
In addition, the column beam joint 28 on the upper part of the remaining first reinforcement column 22C excluding the two first reinforcement columns 22C on both ends is connected to the column beam junction 18 on the upper end of the existing column 12 on the first floor. 90A, post-construction anchor 90B, mortar (or concrete) 90C, and the like. In the present embodiment, the location of the first reinforcing beam 24C adjacent to the column beam joint 28 is also connected to the existing beam 14 on the first floor.

２階フレーム部分３０Ｂは１階フレーム部分３０Ａが構築された後に構築されており、２階フレーム部分３０Ｂは、既存建物１０の全ての２階に対応させておらず、２階のうちの補強すべき箇所のみに設けられている。
図５、図７に示すように、２階フレーム部分３０Ｂは、２階の既存柱１２に対向する第２補強柱２２Ｄと、第２補強柱２２Ｄの上部間を連結し２階の既存梁１４に対向する第２補強梁２４Ｄとを含んでいる。 The second-floor frame portion 30B is constructed after the first-floor frame portion 30A is constructed, and the second-floor frame portion 30B does not correspond to all the second floors of the existing building 10 and reinforces the second-floor frame portion 30B. It is provided only at the power points.
As shown in FIGS. 5 and 7, the second floor frame portion 30 </ b> B connects the second reinforcement pillar 22 </ b> D facing the existing pillar 12 on the second floor and the upper part of the second reinforcement pillar 22 </ b> D to connect the existing beam 14 on the second floor. And a second reinforcing beam 24D facing each other.

第２補強柱２２Ｄは第１補強柱２２Ｃの上部をなす柱梁接合部２８から立設されている。
図７に示すように、第２補強柱２２Ｄは、その高さが、２階の既存柱１２のよりも大きい寸法に設定されている。本実施の形態では、第２補強柱２２Ｄの高さは、２階の既存柱１２の高さに３階の既存柱１２の高さを加えた寸法で形成されている。
２階の既存柱１２の上部をなす柱梁接合部１８に対向する各第２補強柱２２Ｄの上下中間部の柱梁接合部２８は、２階の既存柱１２の上部をなす柱梁接合部１８にスタッドジベル９０Ａ、後施工アンカー９０Ｂ、モルタル（またはコンクリート）９０Ｃなどを介して連結している。本実施の形態では、柱梁接合部２８に近接する第２補強梁２４Ｄの箇所も２階の既存梁１４に連結されている。
また、柱梁接合部２８から突出する第２補強柱２２Ｄの上端２２０８は、モルタルＭを介して３階の既存柱１２の上部をなす柱梁接合部１８に、該柱梁接合部１８へ近づく方向へ移動不能にかつ該柱梁接合部１８から離れる方向へ移動可能にモルタルＭにより接合されている。 The second reinforcing column 22D is erected from a column beam joint 28 that forms the upper part of the first reinforcing column 22C.
As shown in FIG. 7, the height of the second reinforcing pillar 22D is set to be larger than that of the existing pillar 12 on the second floor. In the present embodiment, the height of the second reinforcing pillar 22D is formed by a dimension obtained by adding the height of the existing pillar 12 on the third floor to the height of the existing pillar 12 on the second floor.
The column beam joints 28 at the upper and lower intermediate portions of the second reinforcing columns 22D facing the column beam joints 18 forming the upper part of the existing pillars 12 on the second floor are the column beam joints forming the upper parts of the existing columns 12 on the second floor. 18 is connected via a stud diver 90A, a post-construction anchor 90B, a mortar (or concrete) 90C, and the like. In the present embodiment, the location of the second reinforcing beam 24D adjacent to the column beam joint 28 is also connected to the existing beam 14 on the second floor.
Further, the upper end 2208 of the second reinforcing column 22D protruding from the beam-column joint portion 28 approaches the beam-column joint portion 18 via the mortar M to the beam-column joint portion 18 forming the upper part of the existing column 12 on the third floor. It is joined by the mortar M so that it cannot move in the direction and can move in the direction away from the beam-to-column joint 18.

本実施の形態によれば次の効果が奏される。
まず、１階の両端に位置する２本の第１補強柱２２Ｃについて説明する。
例えば、地震による被災で、図６に示す既存建物１０の１階の既存柱１２が、図１１に示すように崩壊し断破壊を起こして軸方向に変位し、偏心軸力を受けて第１補強柱２２Ｃが外側に曲げ変形しようとすると、第１補強柱２２Ｃの上端２２０６がモルタルＭを介して２階の既存柱１２の上端にあたり、第１補強柱２２Ｃの外側への曲げ変形が抑制される。したがって、１階における柱梁接合部１８、２８間の目開きを抑制でき、耐震補強フレーム３０による補強効果を維持する上で有利となる。
また、第１補強柱２２Ｃの外側への曲げ変形が抑制されるので、第１補強柱２２Ｃの上部と１階の既存柱１２の上部とを連結するための部材５０Ａ、５０Ｂへの負担を軽減できる。したがって、第１補強柱２２Ｃの上部と１階の既存柱１２の上部とを連結するために用いる、本実施の形態では、第１補強柱２２Ｃに近接する第１補強梁２４Ｃ箇所と既存梁１４とを連結するためにも用いる打設作業が困難な後施工アンカー５０Ｂの数量を減少でき、コストダウンを図る上でも有利となる。 According to the present embodiment, the following effects are achieved.
First, the two first reinforcing columns 22C located at both ends of the first floor will be described.
For example, due to earthquake damage, the existing pillar 12 on the first floor of the existing building 10 shown in FIG. 6 collapses and breaks and breaks in the axial direction as shown in FIG. When the reinforcing column 22C is bent outward, the upper end 2206 of the first reinforcing column 22C hits the upper end of the existing column 12 on the second floor via the mortar M, and the bending deformation to the outside of the first reinforcing column 22C is suppressed. The Therefore, the opening between the column beam joints 18 and 28 on the first floor can be suppressed, which is advantageous in maintaining the reinforcing effect by the seismic reinforcement frame 30.
In addition, since bending deformation to the outside of the first reinforcing column 22C is suppressed, the burden on the members 50A and 50B for connecting the upper portion of the first reinforcing column 22C and the upper portion of the existing column 12 on the first floor is reduced. it can. Therefore, in the present embodiment, which is used to connect the upper part of the first reinforcing column 22C and the upper part of the existing column 12 on the first floor, the first reinforcing beam 24C and the existing beam 14 adjacent to the first reinforcing column 22C are used. The number of post-installed anchors 50B, which are difficult to place, can also be reduced, which is advantageous for cost reduction.

次に、第２補強柱２２Ｄについて説明する。
例えば、地震による被災で、図７に示す既存建物１０の２階の既存柱１２が、図１２に示すようにせん断破壊を起こして軸方向に変位し、第２補強柱２２Ｄが外側に曲げ変形しようとすると、第２補強柱２２Ｄの上端２２０８がモルタルＭを介して３階の既存柱１２の上端にあたり、第２補強柱２２Ｄの外側への曲げ変形が抑制される。したがって、２階における柱梁接合部１８、２８間の目開き、第２補強柱２２Ｄと第１補強柱２２Ｃとの接合部における目開きを抑制でき、耐震補強フレーム３０による補強効果を維持する上で有利となる。
また、前記と同様に、第２補強柱２２Ｄの上部と２階の既存柱１２の上部とを連結するために用いる、本実施の形態では、第２補強柱２２Ｄに近接する第２補強梁２４Ｄ箇所と既存梁１４とを連結するためにも用いる打設作業が困難な後施工アンカー５０Ｂの数量を減少でき、コストダウンを図る上でも有利となる。 Next, the second reinforcing pillar 22D will be described.
For example, due to an earthquake, the existing pillar 12 on the second floor of the existing building 10 shown in FIG. 7 is sheared and displaced in the axial direction as shown in FIG. 12, and the second reinforcing pillar 22D is bent outwardly. If it tries, the upper end 2208 of 2nd reinforcement pillar 22D will hit the upper end of the existing pillar 12 of the 3rd floor through the mortar M, and the bending deformation to the outer side of 2nd reinforcement pillar 22D will be suppressed. Accordingly, the opening between the beam-column joints 18 and 28 on the second floor and the opening at the joint between the second reinforcement column 22D and the first reinforcement column 22C can be suppressed, and the reinforcing effect of the seismic reinforcement frame 30 can be maintained. Is advantageous.
Similarly to the above, in the present embodiment, the second reinforcing beam 24D adjacent to the second reinforcing column 22D is used to connect the upper portion of the second reinforcing column 22D and the upper portion of the existing column 12 on the second floor. The number of post-construction anchors 50B, which are difficult to place, also used to connect the spot and the existing beam 14, can be reduced, which is advantageous in reducing costs.

１０……既存建物１０、１２……既存柱、１４……既存梁、２０、３０……耐震補強フレーム、２２Ａ、２２Ｃ……第１補強柱、２２Ｂ、２２Ｄ……第２補強柱、２４Ａ、２４Ｃ……第１補強梁、２４Ｂ、２４Ｄ……第２補強梁。 10: Existing building 10, 12: Existing column, 14: Existing beam, 20, 30 ... Seismic reinforcement frame, 22A, 22C ... First reinforcement column, 22B, 22D ... Second reinforcement column, 24A, 24C: first reinforcing beam, 24B, 24D: second reinforcing beam.

Claims (7)

鉄筋コンクリート造もしくは鉄骨鉄筋コンクリート造ラーメン構造の既存建物の１階の既存柱に対向しその上部が既存柱に連結された第１補強柱を含む１階フレーム部分を構築し、
１階フレーム部分を構築したならば、第１補強柱の上部に立設され既存建物の２階の既存柱に対向しその上部が既存柱に連結された第２補強柱を含む２階フレーム部分を構築し、
このように下層階から上層階へと１階分のフレーム部分を順次既存建物に連結しつつ既存建物の構面に隣接させて耐震補強フレームを構築していくに際して、
Ｎを整数として補強柱をＮ階まで設ける場合に、Ｎ階に設ける第Ｎ補強柱の高さを、Ｎ階の既存柱の高さよりも大きい寸法に設定し、
Ｎ階の既存柱の上部に対向する第Ｎ補強柱の箇所を、Ｎ階の既存柱の上部に連結するとともに、第Ｎ補強柱の上端をＮ階の既存柱よりも上方に位置する既存柱の箇所に、該箇所へ近づく方向へ移動不能にかつ該箇所から離れる方向へ移動可能に接合する、
ことを特徴とする耐震補強工法。 Construct the first-floor frame part including the first reinforcing column that is opposite the existing column on the first floor of the existing building of reinforced concrete structure or steel-framed reinforced concrete ramen structure, and the upper part is connected to the existing column,
If the first-floor frame part is constructed, the second-floor frame part that includes the second reinforcing column that stands on the upper part of the first reinforcing column and faces the existing column on the second floor of the existing building, and the upper part of which is connected to the existing column. Build
In this way, when building a seismic reinforcement frame adjacent to the construction surface of the existing building while sequentially connecting the frame part of the first floor from the lower floor to the upper floor,
When N is an integer and the reinforcement pillars are provided up to the Nth floor, the height of the Nth reinforcement pillar provided on the Nth floor is set to a dimension larger than the height of the existing pillars on the Nth floor,
An existing column in which the location of the Nth reinforcing column facing the upper part of the existing column on the Nth floor is connected to the upper part of the existing column on the Nth floor, and the upper end of the Nth reinforcing column is located above the existing column on the Nth floor To the point of the above, so as not to move in the direction approaching the point, and to be movable in the direction away from the point,
Seismic reinforcement construction method characterized by that. 鉄筋コンクリート造もしくは鉄骨鉄筋コンクリート造ラーメン構造の既存建物の１階の既存柱に対向する第１補強柱を複数立設すると共に、それら隣り合う第１補強柱の上部間を、既存建物の１階の既存梁に対向する第１補強梁で連結し、第１補強柱と既存柱の上部とを連結することで、既存建物に連結された１階フレーム部分を構築し、
１階フレーム部分を構築したならば、既存建物の２階の既存柱に対向する第２補強柱を第１補強柱の上部に立設すると共に、それら隣り合う第２補強柱の上部間を、２階の既存梁に対向する第２補強梁で連結し、第２補強柱と２階の既存柱の上部とを連結することで、既存建物に連結された２階フレーム部分を構築し、
このように下層階から上層階へと１階分のフレーム部分を順次既存建物に連結しつつ既存建物の構面に隣接させて耐震補強フレームを構築していくに際して、
Ｎを整数として補強柱をＮ階まで設ける場合に、Ｎ階に設ける第Ｎ補強柱の高さを、Ｎ階の既存柱の高さよりも大きい寸法に設定し、
Ｎ階の既存柱の上部に対向する第Ｎ補強柱の箇所を、Ｎ階の既存柱の上部に連結するとともに、第Ｎ補強柱の上端をＮ階の既存柱よりも上方に位置する既存柱の箇所に、該箇所へ近づく方向へ移動不能にかつ該箇所から離れる方向へ移動可能に接合する、
ことを特徴とする耐震補強工法。 Establish multiple 1st reinforcement columns facing existing columns on the 1st floor of an existing building of reinforced concrete or steel-framed reinforced concrete ramen structure, and the existing 1st floor of the existing building between the upper parts of the adjacent 1st reinforcement columns. By connecting with the first reinforcing beam facing the beam and connecting the first reinforcing column and the upper part of the existing column, the first floor frame part connected to the existing building is constructed,
If the first-floor frame part is constructed, the second reinforcing column facing the existing column on the second floor of the existing building is erected on the upper part of the first reinforcing column, and between the upper parts of the adjacent second reinforcing columns, By connecting with the second reinforcing beam facing the existing beam on the second floor, and connecting the second reinforcing column and the upper part of the existing column on the second floor, the second floor frame part connected to the existing building is constructed,
In this way, when building a seismic reinforcement frame adjacent to the construction surface of the existing building while sequentially connecting the frame part of the first floor from the lower floor to the upper floor,
When N is an integer and the reinforcement pillars are provided up to the Nth floor, the height of the Nth reinforcement pillar provided on the Nth floor is set to a dimension larger than the height of the existing pillars on the Nth floor,
An existing column in which the location of the Nth reinforcing column facing the upper part of the existing column on the Nth floor is connected to the upper part of the existing column on the Nth floor, and the upper end of the Nth reinforcing column is located above the existing column on the Nth floor To the point of the above, so as not to move in the direction approaching the point, and to be movable in the direction away from the point,
Seismic reinforcement construction method characterized by that. 第Ｎ補強柱の上端の、Ｎ階の既存柱よりも上方に位置する既存柱の箇所への接合は、モルタルを介してなされる、
ことを特徴とする請求項１または２記載の耐震補強工法。 Joining the upper end of the Nth reinforcing pillar to the existing pillar located above the existing pillar on the Nth floor is made through mortar.
The seismic reinforcement method according to claim 1 or 2. 第Ｎ補強柱の高さは、Ｎ階の既存柱の高さに、（Ｎ＋１）階の既存柱の高さを加えた寸法であり、
第Ｎ補強柱の上端が接合されるＮ階の既存柱よりも上方に位置する既存柱の箇所は、（Ｎ＋１）階の既存柱の上端である、
ことを特徴とする請求項１乃至３に何れか１項記載の耐震補強工法。 The height of the Nth reinforcing pillar is the dimension of the height of the existing pillar on the Nth floor plus the height of the existing pillar on the (N + 1) th floor,
The location of the existing column located above the existing column on the Nth floor to which the upper end of the Nth reinforcing column is joined is the upper end of the existing column on the (N + 1) th floor,
The seismic reinforcement method according to any one of claims 1 to 3, characterized in that. 既存柱を支える既存基礎に接合する補強基礎がさらに設けられ、
第１補強柱は、前記補強基礎および既存基礎から立設され、第１補強柱の下部は複数のアンカーを介してそれら基礎に連結されている、
ことを特徴とする請求項１乃至４に何れか１項記載の耐震補強工法。 Reinforcement foundations that are joined to existing foundations that support existing pillars are further provided,
The first reinforcement pillar is erected from the reinforcement foundation and the existing foundation, and the lower part of the first reinforcement pillar is connected to the foundation via a plurality of anchors.
The seismic reinforcement method according to any one of claims 1 to 4, wherein the seismic reinforcement method is provided. 鉄筋コンクリート造もしくは鉄骨鉄筋コンクリート造ラーメン構造の既存建物の１階の既存柱に対向しその上部が既存柱に連結された第１補強柱を含んで構築された１階フレーム部分と、
第１補強柱の上部に立設され既存建物の２階の既存柱に対向しその上部が既存柱に連結された第２補強柱を含んで構築された２階フレーム部分と、
このように下層階から上層階へと１階分のフレーム部分を順次既存建物に連結しつつ既存建物の構面に隣接させて構築された耐震補強フレームであって、
Ｎを整数として補強柱をＮ階まで設ける場合に、Ｎ階に設ける第Ｎ補強柱の高さは、Ｎ階の既存柱の高さよりも大きい寸法に設定され、
Ｎ階の既存柱の上部に対向する第Ｎ補強柱の箇所が、Ｎ階の既存柱の上部に連結されるとともに、第Ｎ補強柱の上端がＮ階の既存柱よりも上方に位置する既存柱の箇所に、該箇所へ近づく方向へ移動不能にかつ該箇所から離れる方向へ移動可能に接合されている、
ことを特徴とする耐震補強フレーム。 A first-floor frame portion constructed to include a first reinforcing column that is opposed to an existing column on the first floor of an existing building of a reinforced concrete structure or a steel reinforced concrete ramen structure, and whose upper part is connected to the existing column;
A second-floor frame part constructed to include a second reinforcing column that is erected on the upper part of the first reinforcing column and that faces the existing column on the second floor of the existing building and whose upper part is connected to the existing column;
In this way, the seismic reinforcement frame constructed by connecting the frame part of the first floor from the lower floor to the upper floor to the existing building while being connected to the existing building,
When N is an integer and reinforcing columns are provided up to the Nth floor, the height of the Nth reinforcing column provided on the Nth floor is set to a size larger than the height of the existing columns on the Nth floor,
The location of the Nth reinforcing column facing the upper part of the existing column on the Nth floor is connected to the upper part of the existing column on the Nth floor, and the upper end of the Nth reinforcing column is located above the existing column on the Nth floor It is joined to the location of the pillar so that it cannot move in the direction approaching the location and is movable in the direction away from the location,
Seismic reinforcement frame characterized by that. 鉄筋コンクリート造もしくは鉄骨鉄筋コンクリート造ラーメン構造の既存建物の１階の既存柱に対向する第１補強柱を複数立設すると共に、それら隣り合う第１補強柱の上部間を、既存建物の１階の既存梁に対向する第１補強梁で連結し、第１補強柱と既存柱の上部とを連結することで構築された１階フレーム部分と、
既存建物の２階の既存柱に対向する第２補強柱を前記第１補強柱の上部に立設すると共に、それら隣り合う第２補強柱の上部間を、２階の既存梁に対向する第２補強梁で連結し、第２補強柱と２階の既存柱の上部とを連結することで構築された２階フレーム部分と、
このように下層階から上層階へと１階分のフレーム部分を順次既存建物に連結しつつ既存建物の構面に隣接させて構築された耐震補強フレームであって、
Ｎを整数として補強柱をＮ階まで設ける場合に、Ｎ階に設ける第Ｎ補強柱の高さは、Ｎ階の既存柱の高さよりも大きい寸法に設定され、
Ｎ階の既存柱の上部に対向する第Ｎ補強柱の箇所が、Ｎ階の既存柱の上部に連結されるとともに、第Ｎ補強柱の上端がＮ階の既存柱よりも上方に位置する既存柱の箇所に、該箇所へ近づく方向へ移動不能にかつ該箇所から離れる方向へ移動可能に接合されている、
ことを特徴とする耐震補強フレーム。 Establish multiple 1st reinforcement columns facing existing columns on the 1st floor of an existing building of reinforced concrete or steel-framed reinforced concrete ramen structure, and the existing 1st floor of the existing building between the upper parts of the adjacent 1st reinforcement columns. First floor frame part constructed by connecting the first reinforcing column and the upper part of the existing column, connected by the first reinforcing beam facing the beam,
A second reinforcing column facing the existing column on the second floor of the existing building is erected on the upper part of the first reinforcing column, and the second beam between the adjacent second reinforcing columns is opposed to the existing beam on the second floor. 2nd floor frame part constructed by connecting with 2 reinforcing beams and connecting the 2nd reinforcing pillar and the upper part of the existing pillar on the 2nd floor,
In this way, the seismic reinforcement frame constructed by connecting the frame part of the first floor from the lower floor to the upper floor to the existing building while being connected to the existing building,
When N is an integer and reinforcing columns are provided up to the Nth floor, the height of the Nth reinforcing column provided on the Nth floor is set to a size larger than the height of the existing columns on the Nth floor,
The location of the Nth reinforcing column facing the upper part of the existing column on the Nth floor is connected to the upper part of the existing column on the Nth floor, and the upper end of the Nth reinforcing column is located above the existing column on the Nth floor It is joined to the location of the pillar so that it cannot move in the direction approaching the location and is movable in the direction away from the location,
Seismic reinforcement frame characterized by that.
JP2010082064A 2010-03-31 2010-03-31 Seismic strengthening method and seismic strengthening frame for existing buildings Active JP5711897B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2010082064A JP5711897B2 (en) 2010-03-31 2010-03-31 Seismic strengthening method and seismic strengthening frame for existing buildings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010082064A JP5711897B2 (en) 2010-03-31 2010-03-31 Seismic strengthening method and seismic strengthening frame for existing buildings

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2015016277A Division JP5873194B2 (en) 2015-01-30 2015-01-30 Seismic strengthening method and seismic strengthening frame for existing buildings

Publications (2)

Publication Number Publication Date
JP2011214280A true JP2011214280A (en) 2011-10-27
JP5711897B2 JP5711897B2 (en) 2015-05-07

Family

ID=44944296

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010082064A Active JP5711897B2 (en) 2010-03-31 2010-03-31 Seismic strengthening method and seismic strengthening frame for existing buildings

Country Status (1)

Country Link
JP (1) JP5711897B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012233374A (en) * 2011-05-09 2012-11-29 Meiko Consultants Co Ltd Seismic reinforcement structure
JP2016044391A (en) * 2014-08-19 2016-04-04 宇部興産株式会社 Manufacturing method for reinforcement structure
JP2016044396A (en) * 2014-08-19 2016-04-04 宇部興産株式会社 Reinforcement structure and design method thereof
JP2018044307A (en) * 2016-09-12 2018-03-22 センクシア株式会社 Method of reinforcing existing column

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005350859A (en) * 2004-06-08 2005-12-22 Nippon Steel Corp Seismic strengthening structure of existing building
JP2007138472A (en) * 2005-11-16 2007-06-07 Fujita Corp Earthquake resistant reinforcing method of existing building of reinforced concrete construction frame structure
JP2010047926A (en) * 2008-08-20 2010-03-04 Kurosawa Construction Co Ltd Reinforcement structure of existing building

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005350859A (en) * 2004-06-08 2005-12-22 Nippon Steel Corp Seismic strengthening structure of existing building
JP2007138472A (en) * 2005-11-16 2007-06-07 Fujita Corp Earthquake resistant reinforcing method of existing building of reinforced concrete construction frame structure
JP2010047926A (en) * 2008-08-20 2010-03-04 Kurosawa Construction Co Ltd Reinforcement structure of existing building

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012233374A (en) * 2011-05-09 2012-11-29 Meiko Consultants Co Ltd Seismic reinforcement structure
JP2016044391A (en) * 2014-08-19 2016-04-04 宇部興産株式会社 Manufacturing method for reinforcement structure
JP2016044396A (en) * 2014-08-19 2016-04-04 宇部興産株式会社 Reinforcement structure and design method thereof
JP2018044307A (en) * 2016-09-12 2018-03-22 センクシア株式会社 Method of reinforcing existing column

Also Published As

Publication number Publication date
JP5711897B2 (en) 2015-05-07

Similar Documents

Publication Publication Date Title
JP4247496B2 (en) Seismic reinforcement structure
JP5711897B2 (en) Seismic strengthening method and seismic strengthening frame for existing buildings
JPH09264049A (en) Aseismic structure of building
JP2007162354A (en) Reinforcing method for existing building, and building reinforced by the method
JP5873194B2 (en) Seismic strengthening method and seismic strengthening frame for existing buildings
JP6122740B2 (en) Seismic reinforcement structure
JP5827804B2 (en) Structure
JP5827805B2 (en) Structure
JP3104679U (en) Braceless reinforced concrete construction
JP6261964B2 (en) Seismic reinforcement structure
JP4406270B2 (en) Seismic reinforcement extension method of existing building and earthquake resistance reinforcement extension building
JP5946165B2 (en) Seismic reinforcement structure
JP2006241892A (en) Aseismatic structure of house and its construction method
CN105275113A (en) Rhombus steel grid shear wall structure
JP2013227775A (en) Seismic strengthening structure and method for existing building
JP5541520B2 (en) Underground construction
JP6951851B2 (en) High-rise earthquake-resistant building
JP6631895B1 (en) Building seismic facilities using wires, etc.
JP7281165B2 (en) Column-beam frame and frame
JP2012144864A (en) Structure
JP2012233374A5 (en)
JP5752478B2 (en) housing complex
JPH1136651A (en) Aseismic building structure
JP6422802B2 (en) Building frame structure
JP3356419B2 (en) Seismic building structure

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20130307

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20140210

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20140311

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20140508

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20141202

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20150130

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20150303

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20150309

R150 Certificate of patent or registration of utility model

Ref document number: 5711897

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250