JP2014020119A - Outer-equipped reinforcement structure of existing building, and method for reinforcing existing building - Google Patents

Outer-equipped reinforcement structure of existing building, and method for reinforcing existing building Download PDF

Info

Publication number
JP2014020119A
JP2014020119A JP2012160117A JP2012160117A JP2014020119A JP 2014020119 A JP2014020119 A JP 2014020119A JP 2012160117 A JP2012160117 A JP 2012160117A JP 2012160117 A JP2012160117 A JP 2012160117A JP 2014020119 A JP2014020119 A JP 2014020119A
Authority
JP
Japan
Prior art keywords
reinforcing
reinforcement
horizontal
existing building
column
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
JP2012160117A
Other languages
Japanese (ja)
Other versions
JP5863590B2 (en
Inventor
Tashiro Fujimura
太史郎 藤村
Sachiyuki Toyoda
祥之 豊田
Futoshi Inoue
太 井之上
Original Assignee
Taisei Corp
大成建設株式会社
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 Taisei Corp, 大成建設株式会社 filed Critical Taisei Corp
Priority to JP2012160117A priority Critical patent/JP5863590B2/en
Publication of JP2014020119A publication Critical patent/JP2014020119A/en
Application granted granted Critical
Publication of JP5863590B2 publication Critical patent/JP5863590B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

PROBLEM TO BE SOLVED: To provide an outer-equipped reinforcement structure of an existing building, capable of being simply constructed at low cost, and a method for reinforcing the existing building.SOLUTION: An outer-equipped reinforcement structure of an existing building 30 comprises: horizontal members 31 attached to a periphery of the existing building 30; and a reinforcement frame 10 installed on the outside the periphery of the existing building 30. The reinforcement frame 10 is constituted of: reinforcement columns 11 disposed while penetrating through penetrating parts 32 formed in the horizontal members 31; and reinforcement beams 12 extended from side faces of the reinforcement columns 11 in the direction orthogonal to the reinforcement columns 11. A contact joint member 20 is arranged in the penetrating part 32 so as to abut with the side face of the reinforcement column 11. The outer-equipped reinforcement structure is constructed to be a junction structure which supports the existing building only in the horizontal direction against earthquake horizontal force applied in the material axial direction of the reinforcement beams 12 without making the horizontal members bent and resistant.

Description

本発明は、既存建物の外付け補強構造および既存建物の補強方法に関する。   The present invention relates to an external reinforcing structure for an existing building and a method for reinforcing an existing building.
従来、既存建物を外側から耐震補強する場合、鉄骨ブレース架構を既存建物の外周躯体面に直付け補強構法、及びスラブや梁を増設して鉄骨ブレース架構と一体化させる補強構法が多用されてきた。   Conventionally, when an existing building is seismically reinforced from the outside, a steel brace frame is directly attached to the outer peripheral frame of the existing building, and a reinforcing frame method in which slabs and beams are added and integrated with the steel brace frame has been widely used. .
後者に示す補強構法での、鉄骨ブレース架構と増設スラブ、及び増設梁との接合部は、後施工アンカーやPC鋼材を介して、剛接合となるように設計されてきた。(非特許文献1参照)。   In the reinforcement structure shown in the latter, the joint part between the steel brace frame, the additional slab, and the additional beam has been designed to be rigidly connected via a post-installed anchor or PC steel material. (Refer nonpatent literature 1).
前記従来の耐震補強構造では、バルコニー等と増設する鉄骨ブレース架構を剛接合とするために、既存建物と鉄骨ブレース架構間に生じるせん断力や曲げモーメントに十分に抵抗し、応力伝達が出来るように、接合部分では断面サイズを増大させ、鉄筋量を増加させる必要があった。
従って、強固な接合部を構築するために、複雑な断面形状や高配筋量となり、工期が長くなり、補強工事費が高額となる、など問題があった。
In the conventional seismic retrofit structure, since the steel brace frame to be added to the balcony or the like is rigidly connected, it can sufficiently resist the shearing force and bending moment generated between the existing building and the steel brace frame and transmit stress. In addition, it is necessary to increase the cross-sectional size and the amount of reinforcing bars in the joint portion.
Therefore, in order to construct a strong joint, there are problems such as a complicated cross-sectional shape and a high bar arrangement amount, a long construction period, and a high reinforcement construction cost.
本発明は、前記の問題点を解決するものであり、簡易かつ安価に構築することが可能な既存建物の外付け補強構造およびその補強方法を提供することを目的とする。   The present invention solves the above-described problems, and an object thereof is to provide an external reinforcing structure for an existing building that can be easily and inexpensively constructed and a reinforcing method thereof.
前記課題を解決するために、本発明の既存建物の外付け補強構造は、既存建物の外周部に取り付く水平部材と、前記既存建物の外周部の外側に設置される補強架構とを備える既存建物の外付け補強構造であって、前記補強架構が、前記水平部材に形成された貫通部を貫通して配設された補強柱と、前記補強柱と直交する方向に前記補強柱の側面から延設された補強梁とを備えており、前記貫通部には前記補強柱の側面に当接するように接触接合部材を配置し、補強柱が材軸方向に対して伸縮および回転方向の少なくともいずれかに移動することで、前記補強梁の材軸方向に加わる地震水平力に対して、水平部材に曲げ抵抗を生じさせることのない、水平方向のみ支持する接合構造としたことを特徴としている。
なお、前記接触接合部材の前記補強柱との当接面は、曲面状であることが望ましい。
In order to solve the above problems, an external reinforcing structure for an existing building according to the present invention includes an existing building including a horizontal member attached to the outer peripheral portion of the existing building and a reinforcing frame installed outside the outer peripheral portion of the existing building. The reinforcing frame includes a reinforcing column disposed through a penetrating portion formed in the horizontal member, and extends from a side surface of the reinforcing column in a direction perpendicular to the reinforcing column. A contact joining member is disposed in the penetrating portion so as to contact a side surface of the reinforcing column, and the reinforcing column is at least one of expansion / contraction and rotation direction with respect to the material axis direction. It is characterized by having a joining structure that supports only the horizontal direction without causing bending resistance to the horizontal member with respect to the seismic horizontal force applied in the axial direction of the reinforcing beam.
The contact surface of the contact joining member with the reinforcing column is preferably a curved surface.
かかる既存建物の外付け補強構造によれば、補強柱に接触接合部材を当接させているため、接合部が水平方向のみを支持する接合構造となる。そのため、補強架構が負担する地震水平力により水平部材に曲げモーメントが生じることがなく、水平部材の鋼材量(鉄筋量)を増加させる必要がない。
また、既存建物に大変形が作用した場合でも、水平部材に発生する曲げひびわれを低減することができる。なお、水平部材には、例えば、既存のバルコニー(床スラブ)、梁、庇の他、新設のバルコニー、梁、庇等が含まれる。
According to such an external reinforcing structure of an existing building, the contact joining member is brought into contact with the reinforcing column, so that the joining portion supports only the horizontal direction. Therefore, a bending moment is not generated in the horizontal member due to the seismic horizontal force borne by the reinforcing frame, and it is not necessary to increase the amount of steel material (rebar amount) of the horizontal member.
Moreover, even when a large deformation acts on the existing building, it is possible to reduce bending cracks that occur in the horizontal member. Note that the horizontal members include, for example, existing balconies (floor slabs), beams, fences, as well as new balconies, beams, fences, and the like.
また、本発明の既存建物の補強方法は、既存建物の外周部に取り付く水平部材に貫通部を形成する貫通部形成工程と、前記貫通部に補強柱を配置する補強柱設置工程と、隣り合う前記補強柱に補強梁を横架させる横架工程と、前記貫通部の内周面に接触接合部材を固定する接合部材取付工程とを備える既存建物の補強方法であって、前記接触接合部材と前記補強柱とを当接させることを特徴としている。   Moreover, the reinforcement method of the existing building of this invention adjoins the penetration part formation process which forms a penetration part in the horizontal member which attaches to the outer peripheral part of the existing building, and the reinforcement pillar installation process which arranges a reinforcement pillar in the said penetration part A method for reinforcing an existing building, comprising: a horizontal step of horizontally mounting a reinforcing beam on the reinforcing column; and a bonding member mounting step of fixing a contact bonding member to an inner peripheral surface of the through portion, and the contact bonding member The reinforcing column is brought into contact with the reinforcing column.
かかる既存建物の補強方法によれば、外付耐震補強工法において、補強架構と水平部材との接合部に曲げモーメントを生じさせない外付け補強構造を構築することができる。
なお、水平部材は既存部材であってもよいし、増設部材であってもよい。
According to such a reinforcement method for an existing building, it is possible to construct an external reinforcement structure that does not cause a bending moment at the joint between the reinforcement frame and the horizontal member in the external seismic reinforcement method.
The horizontal member may be an existing member or an additional member.
本発明の既存建物の外付け補強構造および既存建物の補強方法によれば、簡易かつ安価に既存建物を外側から耐震補強を行うことが出来る。   According to the external reinforcement structure of an existing building and the reinforcement method of an existing building of the present invention, the existing building can be subjected to seismic reinforcement from the outside simply and inexpensively.
本発明の実施形態に係る既存建物の外付け補強構造を示す斜視図である。It is a perspective view which shows the external reinforcement structure of the existing building which concerns on embodiment of this invention. 図1に示す既存建物の外付け補強構造の一部を示す正面図である。It is a front view which shows a part of external reinforcement structure of the existing building shown in FIG. 図1に示す既存建物の外付け補強構造の一部を示す断面図である。It is sectional drawing which shows a part of external reinforcement structure of the existing building shown in FIG. (a)は同補強構造の水平部材と接触接合部材との接合構造を示す拡大断面図、(b)は同平断面図である。(A) is an expanded sectional view which shows the joining structure of the horizontal member and contact joining member of the reinforcement structure, (b) is the flat sectional view. (a)および(b)は水平部材と接触接合部材との接合構造の他の形態を示す図である。(A) And (b) is a figure which shows the other form of the joining structure of a horizontal member and a contact joining member. (a)および(b)は本発明の実施形態に係る既存建物の補強方法の各施工段階を表した断面図である。(A) And (b) is sectional drawing showing each construction step of the reinforcement method of the existing building which concerns on embodiment of this invention. (a)および(b)は図6に続く既存建物の補強方法の各施工段階を表した断面図である。(A) And (b) is sectional drawing showing each construction step of the reinforcement method of the existing building following FIG.
本実施形態の既存建物の外付け補強構造1は、図1に示すように、既存建物30の外周部に取り付く水平部材31と、既存建物30の外部に設置する補強架構10とを備えている。   As shown in FIG. 1, the external reinforcing structure 1 for an existing building according to the present embodiment includes a horizontal member 31 that is attached to the outer periphery of the existing building 30 and a reinforcing frame 10 that is installed outside the existing building 30. .
補強架構10は、水平部材31を貫通して配設された補強柱11と、補強柱11と直交する方向に補強柱11の側面から延設された補強梁12とを備えて構成されている。   The reinforcing frame 10 includes a reinforcing column 11 disposed through the horizontal member 31 and a reinforcing beam 12 extending from a side surface of the reinforcing column 11 in a direction orthogonal to the reinforcing column 11. .
補強架構10には、階毎(上下の水平部材31,31の間)に上下2段の補強梁12が形成されていて、左右の補強柱11,11と上下の補強梁12,12で形成されている。   The reinforcing frame 10 is formed with two upper and lower reinforcing beams 12 for each floor (between the upper and lower horizontal members 31, 31), and is formed by the left and right reinforcing columns 11, 11 and the upper and lower reinforcing beams 12, 12. Has been.
補強架構10は、既存建物30の各階のバルコニーにおいて、外壁面または窓枠に隣接して形成されている。
補強架構10(補強柱11および補強梁12)を構成する材料は限定されるものではないが、本実施形態ではH形鋼で形成されている。
The reinforcing frame 10 is formed adjacent to the outer wall surface or the window frame on the balcony of each floor of the existing building 30.
Although the material which comprises the reinforcement frame 10 (the reinforcement pillar 11 and the reinforcement beam 12) is not limited, In this embodiment, it is formed with the H-section steel.
本実施形態の補強架構10は、上下左右に隣接する補強柱と補強梁で形成させる十字型のフレーム部材13a,13b(補強フレーム13)同士を連結することにより形成されている。   The reinforcing frame 10 of the present embodiment is formed by connecting cross-shaped frame members 13a and 13b (reinforcing frames 13) formed by reinforcing columns and reinforcing beams adjacent vertically and horizontally.
補強フレーム13は、図2に示すように、柱部材11aと梁部材12aとが一体に組み合わされることにより形成されている。なお、梁部材12aの柱部材11aへの固定方法は限定されるものではない。   As shown in FIG. 2, the reinforcing frame 13 is formed by integrally combining a column member 11a and a beam member 12a. The method for fixing the beam member 12a to the column member 11a is not limited.
補強フレーム13は、柱部材11aの左右の側面の上部と下部から、柱部材11aと直交する方向に梁部材12aが延設されることにより形成されており、正面視でキ字状を呈している。本実施形態では、補強フレーム13として、十字状のフレーム部材13a,13bを上下に組み合わせることにより構成されたものを使用する。なお、補強フレーム13の構成は限定されるものではなく、例えば、予め正面視でキ字状になるように柱部材11aと梁部材12aとが一体に形成されていてもよいし、柱部材11aと梁部材12aを現地において接合してもよい。   The reinforcing frame 13 is formed by extending the beam member 12a from the upper and lower portions of the left and right side surfaces of the column member 11a in a direction orthogonal to the column member 11a, and has a K-shape when viewed from the front. Yes. In the present embodiment, the reinforcement frame 13 is configured by combining cross-shaped frame members 13a and 13b vertically. Note that the configuration of the reinforcing frame 13 is not limited. For example, the column member 11a and the beam member 12a may be integrally formed in advance so as to have a square shape when viewed from the front, or the column member 11a. And the beam member 12a may be joined locally.
補強柱11は、上下に配設された柱部材11a同士を連結することにより形成されており、図2または図3に示すように、既存建物30の室外に張り出す水平部材31を貫通している。   The reinforcing column 11 is formed by connecting the column members 11a arranged up and down, and as shown in FIG. 2 or FIG. 3, penetrates the horizontal member 31 projecting outside the existing building 30. Yes.
柱部材11a(補強フレーム13)は、水平部材31に形成された貫通孔(貫通部)32を貫通しているとともに、各階(上下の水平部材31,31の間)の中間部において、上下に配設された他の柱部材11a(補強フレーム13)と連結されている。なお、柱部材11a同士の連結位置は限定されるものではない。   The column member 11a (reinforcing frame 13) passes through a through hole (penetrating portion) 32 formed in the horizontal member 31, and is vertically moved in an intermediate portion of each floor (between the upper and lower horizontal members 31, 31). The other pillar member 11a (reinforcing frame 13) is connected. In addition, the connection position of the column members 11a is not limited.
上下の柱部材11a同士の固定は、柱部材11aの端面同士を突き合わせた状態でスプライスプレート14を介してウェブ同士を接合することにより行う。   The upper and lower column members 11a are fixed to each other by joining the webs via the splice plate 14 with the end surfaces of the column members 11a being in contact with each other.
つまり、上下の柱部材11aの境界を跨ぐように配設された前後一対のスプライスプレート14,14により、柱部材11aのウェブを前後から挟むとともに、スプライスプレート14およびウェブを貫通したボルトにより締着することにより固定されている。   That is, the web of the pillar member 11a is sandwiched from the front and rear by a pair of front and rear splice plates 14 and 14 arranged so as to straddle the boundary between the upper and lower pillar members 11a, and tightened by bolts penetrating the splice plate 14 and the web. It is fixed by doing.
補強柱11には、貫通孔32の高さ方向中間部に対応して補強プレート11bが配設されている。
補強プレート11bは、補強柱11のフランジとウェブに囲まれた空間を仕切るように水平に配設されている。なお、補強プレート11bは、必要に応じて配設すればよく、省略してもよい。
A reinforcing plate 11 b is disposed on the reinforcing column 11 so as to correspond to the intermediate portion in the height direction of the through hole 32.
The reinforcing plate 11b is horizontally disposed so as to partition the space surrounded by the flange of the reinforcing column 11 and the web. The reinforcing plate 11b may be disposed as necessary and may be omitted.
補強柱11は、貫通孔32の内部において、接触接合部材20および添え板25を介して水平部材31と接合されている。   The reinforcing pillar 11 is joined to the horizontal member 31 through the contact joining member 20 and the accessory plate 25 inside the through hole 32.
接触接合部材20は、貫通孔32内に配設されており、補強柱11に当接している。接触接合部材20と貫通孔32との隙間には固化材40が充填されている。   The contact bonding member 20 is disposed in the through hole 32 and is in contact with the reinforcing column 11. A gap between the contact bonding member 20 and the through hole 32 is filled with a solidifying material 40.
図4の(a)および(b)に示すように、接触接合部材20は、補強柱11の左右両側に配置されており、接触部21と、保持部22とを備えている。   As shown in (a) and (b) of FIG. 4, the contact bonding member 20 is disposed on both the left and right sides of the reinforcing pillar 11, and includes a contact portion 21 and a holding portion 22.
接触部21は、補強柱11と当接する板材である。
本実施形態の接触部21は、水平部材31の部材厚よりも大きな高さを有しており、上端部が水平部材31の上面よりも上方に突出している。なお、接触部21の形状寸法は限定されない。
The contact portion 21 is a plate material that comes into contact with the reinforcing pillar 11.
The contact portion 21 of the present embodiment has a height greater than the member thickness of the horizontal member 31, and the upper end portion protrudes upward from the upper surface of the horizontal member 31. In addition, the shape dimension of the contact part 21 is not limited.
接触部21の補強柱11との当接面は、水平方向は直線を呈し、垂直方向は曲面状を呈している。そのため、接触接合部材20は、補強柱11の側面(フランジ)と線で接触している。   The contact surface of the contact portion 21 with the reinforcing column 11 has a straight line in the horizontal direction and a curved surface in the vertical direction. Therefore, the contact bonding member 20 is in contact with the side surface (flange) of the reinforcing column 11 with a line.
保持部22は、接触部21の背面(補強柱11と反対側の面)に一体に固定された部材であって、本実施形態では断面L形の形材により構成されている。なお、保持部22を構成する材料は限定されるものではない。   The holding portion 22 is a member that is integrally fixed to the back surface of the contact portion 21 (the surface on the side opposite to the reinforcing column 11), and in the present embodiment, is configured by a cross-sectional L-shaped member. In addition, the material which comprises the holding | maintenance part 22 is not limited.
保持部22の一片は、接触部21の背面に重ね合わせた状態で固定されており、他片は、接触部21の背面から補強柱11の反対側に向って張り出している。   One piece of the holding portion 22 is fixed in a state of being overlapped on the back surface of the contact portion 21, and the other piece projects from the back surface of the contact portion 21 toward the opposite side of the reinforcing column 11.
保持部22の他片には、水平部材31に配筋された鉄筋31aが溶接されている。本実施形態では、水平部材31に鉄筋31aが上下に2段配筋されており、このうちの上側の鉄筋31aが保持部22に溶接されている。   A reinforcing bar 31 a arranged in the horizontal member 31 is welded to the other piece of the holding portion 22. In the present embodiment, the horizontal member 31 has a reinforcing bar 31 a vertically arranged in two stages, and the upper reinforcing bar 31 a among them is welded to the holding portion 22.
なお、鉄筋31aと接触接合部材20との接合方法は限定されるものではない。例えば、図5の(a)に示すように保持部22にプレート22aを一体に固定し、このプレート22aに鉄筋31aを固定してもよい。   In addition, the joining method of the reinforcing bar 31a and the contact joining member 20 is not limited. For example, as shown in FIG. 5A, the plate 22a may be integrally fixed to the holding portion 22, and the reinforcing bar 31a may be fixed to the plate 22a.
また、鉄筋31aは、保持部22に直接溶接してもよいし、図5の(b)に示すように、固定用の他の部材(鉄筋22bや板材22c等)を介して固定してもよい。こうすることで、鉄筋31aと接触接合部材20との位置がずれている場合であっても、鉄筋31aと接触接合部材20とを固定することができる。   Further, the reinforcing bar 31a may be welded directly to the holding portion 22, or may be fixed via another fixing member (reinforcing bar 22b, plate member 22c, etc.) as shown in FIG. Good. By carrying out like this, even if it is a case where the position of the reinforcing bar 31a and the contact bonding member 20 has shifted | deviated, the reinforcing bar 31a and the contact bonding member 20 can be fixed.
添え板25は、補強柱11の前面と後面(接触部21と直交する面)に配設された板材であって、補強柱11との当接面が平面を呈している。
添え板25の背面には、接触接合部材20と同様に、保持部22とが配設されている。
The accessory plate 25 is a plate material disposed on the front surface and the rear surface (surface orthogonal to the contact portion 21) of the reinforcing column 11, and the contact surface with the reinforcing column 11 has a flat surface.
Similar to the contact bonding member 20, a holding portion 22 is disposed on the back surface of the attachment plate 25.
接触接合部材20および添え板25の背面には、拘束筋24が配筋されている。
本実施形態では、図4の(b)に示すように、コ字状に形成された2本の拘束筋24により、補強柱11を囲っている。
Restraint bars 24 are arranged on the back surfaces of the contact bonding member 20 and the attachment plate 25.
In the present embodiment, as shown in FIG. 4B, the reinforcing pillar 11 is surrounded by two restraining bars 24 formed in a U shape.
接触接合部材20は、接触部21の背面から水平部材31(貫通孔32の縁部分)に至る定着プレート26を備えていてもよい。定着プレート26は、接触部21の背面に一体に固定された板材であって、アンカーボルトを介して水平部材31に固定される。
図4では、定着プレート26が補強柱11のウェブの延長線上に配設されているが、定着プレート26の形状や配置は限定されるものではなく、例えば、貫通孔32の上面を覆うように配設されていてもよい。
The contact bonding member 20 may include a fixing plate 26 that extends from the back surface of the contact portion 21 to the horizontal member 31 (the edge portion of the through hole 32). The fixing plate 26 is a plate member integrally fixed to the back surface of the contact portion 21 and is fixed to the horizontal member 31 via an anchor bolt.
In FIG. 4, the fixing plate 26 is arranged on the extension line of the web of the reinforcing pillar 11, but the shape and arrangement of the fixing plate 26 are not limited, and for example, cover the upper surface of the through hole 32. It may be arranged.
補強梁12は、左右に配設された梁部材12a同士を連結することにより形成されており、図2に示すように、各階(上下の水平部材31の間)の補強柱11の上部および下部のそれぞれから左右に延設されている。   The reinforcing beam 12 is formed by connecting the beam members 12a arranged on the left and right sides, and as shown in FIG. 2, the upper and lower portions of the reinforcing column 11 on each floor (between the upper and lower horizontal members 31). It extends from each of the left and right.
梁部材12aは、水平部材31を貫通した柱部材11aの側面から補強柱11と直交する方向に延設されている。   The beam member 12 a extends from the side surface of the column member 11 a penetrating the horizontal member 31 in a direction orthogonal to the reinforcing column 11.
左右に隣り合う梁部材12a同士の連結は、梁部材12aの端面同士を突き合わせた状態でスプライスプレート14を介して梁部材12aのウェブ同士のみを接合することにより行う。
つまり、左右の梁部材12aの境界を跨ぐように配設された前後一対のスプライスプレート14によりウェブを前後から挟むとともに、スプライスプレート14およびウェブを貫通したボルトにより締着すると、梁部材12a同士が連結される。
The beam members 12a adjacent to each other on the left and right are connected by joining only the webs of the beam members 12a via the splice plate 14 with the end faces of the beam members 12a being in contact with each other.
That is, when the web is sandwiched from the front and rear by a pair of front and rear splice plates 14 arranged so as to straddle the boundary between the left and right beam members 12a, and the web members 12a are fastened by bolts penetrating the splice plate 14 and the web. Connected.
本実施形態では、図1に示すように、左右に隣接する梁部材12a同士の接合位置を、補強梁12に作用する曲げモーメントが小さくなる位置(左右の補強柱11,11の中間となる位置)としている。なお、梁部材12a同士の接合箇所は限定されない。   In the present embodiment, as shown in FIG. 1, the joining positions of the beam members 12 a adjacent to the left and right are positions where the bending moment acting on the reinforcing beam 12 is small (positions between the left and right reinforcing columns 11, 11. ). In addition, the joining location of the beam members 12a is not limited.
図2に示すように、上下の補強梁12,12同士の間隔は、水平部材31と補強梁12との間隔よりも大きくなっているので、室内からの視界が補強梁12により遮られることがない。   As shown in FIG. 2, the distance between the upper and lower reinforcing beams 12, 12 is larger than the distance between the horizontal member 31 and the reinforcing beam 12, so that the view from the room is blocked by the reinforcing beam 12. Absent.
水平部材31は、図3に示すように、既存建物30の躯体構造の一部を構成するものであって、柱33および梁34に一体に接続されている。
本実施形態の水平部材31は、既存建物30の室外に形成されたバルコニーの床部分を構成している。
As shown in FIG. 3, the horizontal member 31 constitutes a part of the frame structure of the existing building 30 and is integrally connected to the pillar 33 and the beam 34.
The horizontal member 31 of the present embodiment constitutes a floor portion of a balcony formed outside the existing building 30.
水平部材31には、補強柱11を配置するための貫通孔32が形成されている。
貫通孔32は、補強柱11の断面形状よりも大きな形状を有している。本実施形態では貫通孔32を矩形状に形成しているが、貫通孔32の形状は、例えば円形でもよく、限定されるものではない。
The horizontal member 31 is formed with a through hole 32 for arranging the reinforcing pillar 11.
The through hole 32 has a shape larger than the cross-sectional shape of the reinforcing column 11. In the present embodiment, the through hole 32 is formed in a rectangular shape, but the shape of the through hole 32 may be, for example, a circle and is not limited.
貫通孔32と補強柱11との隙間は、接触接合部材20と固化材40により充填されている。固化材40を構成する材料は限定されるものではないが、本実施形態では、無収縮モルタルを使用する。   A gap between the through hole 32 and the reinforcing column 11 is filled with the contact bonding member 20 and the solidifying material 40. Although the material which comprises the solidification material 40 is not limited, In this embodiment, a non-shrink mortar is used.
次に、本実施形態の既存建物の補強方法について説明する。
既存建物の補強方法は、貫通部形成工程と、補強柱設置工程と、横架工程と、接合部材取付工程とを備えている。
Next, the reinforcement method of the existing building of this embodiment is demonstrated.
The reinforcement method of the existing building is equipped with the penetration part formation process, the reinforcement pillar installation process, the horizontal mounting process, and the joining member attachment process.
貫通部形成工程は、図6の(a)に示すように、水平部材31に貫通孔(貫通部)32を形成する工程である。水平部材31の鉄筋31aは、貫通孔32内に露出させておく。   The through portion forming step is a step of forming a through hole (through portion) 32 in the horizontal member 31 as shown in FIG. The reinforcing bar 31 a of the horizontal member 31 is exposed in the through hole 32.
補強柱設置工程は、貫通孔32に柱部材11a(補強柱11)を貫通させる工程である。
柱部材11aは、その下側に先行配置された既設の柱部材11aに接合する。
本実施形態では、一つの柱部材11aに二つの梁部材12a,12aを接合してなる十字状のフレーム部材13a,13bを工場等で事前に形成しておき、これを現場に搬入する。
The reinforcing column installation step is a step of penetrating the column member 11 a (the reinforcing column 11) through the through hole 32.
The column member 11a is joined to the existing column member 11a disposed in advance in the lower side thereof.
In the present embodiment, cross-shaped frame members 13a and 13b formed by joining two beam members 12a and 12a to one column member 11a are formed in advance in a factory or the like, and are carried to the site.
補強柱設置工程では、図6の(b)に示すように、まず、柱部材11aを貫通孔32に貫通させつつ、下側のフレーム部材13aを既設の補強フレーム13に接合する。次に、図7の(a)に示すように、下側のフレーム部材13aの上に上側のフレーム部材13bを連結し、キ字状の補強フレーム13を形成する。   In the reinforcing column installation step, as shown in FIG. 6B, first, the lower frame member 13 a is joined to the existing reinforcing frame 13 while the column member 11 a is passed through the through hole 32. Next, as shown in FIG. 7A, the upper frame member 13b is connected to the lower frame member 13a to form a K-shaped reinforcing frame 13.
下側のフレーム部材13aと上側のフレーム部材13bとの連結は、溶接により行う。なお、フレーム部材13a,13b同士の連結方法は限定されるものではない。   The lower frame member 13a and the upper frame member 13b are connected by welding. In addition, the connection method of frame member 13a, 13b is not limited.
横架工程は、隣り合う補強柱11の間に補強梁12を横架する工程である。
横架工程では、左右に隣り合う補強フレーム13の梁部材12a同士を連結する。
The horizontal mounting process is a process in which the reinforcing beam 12 is horizontally mounted between the adjacent reinforcing columns 11.
In the horizontal step, the beam members 12a of the reinforcing frames 13 adjacent to the left and right are connected.
接合部材取付工程は、図7の(a)に示すように、貫通孔32の内周面に接触接合部材を固定して、補強柱11(柱部材11a)と水平部材31とを接合する工程である。   In the joining member attaching step, as shown in FIG. 7A, the contact joining member is fixed to the inner peripheral surface of the through hole 32 and the reinforcing pillar 11 (the pillar member 11 a) and the horizontal member 31 are joined. It is.
まず、貫通孔32内において、水平部材31の鉄筋31aに接触接合部材20(保持部22)および添え板25を溶接する。このとき、接触接合部材20は、補強柱11の側面に当接させる。   First, in the through hole 32, the contact bonding member 20 (holding portion 22) and the attachment plate 25 are welded to the reinforcing bar 31 a of the horizontal member 31. At this time, the contact bonding member 20 is brought into contact with the side surface of the reinforcing column 11.
次に、拘束筋24や補強筋など、必要な配筋を行うとともに、図7の(b)に示すように、接触接合部材20と貫通孔32との間の隙間に固化材40を充填する。
固化材40が固化すると、補強柱11と水平部材31とが接合される。
Next, the necessary reinforcing bars such as the restraining bars 24 and the reinforcing bars are arranged, and the solidifying material 40 is filled in the gap between the contact bonding member 20 and the through hole 32 as shown in FIG. .
When the solidifying material 40 is solidified, the reinforcing pillar 11 and the horizontal member 31 are joined.
本実施形態の外付け補強構造1によれば、次のような効果が奏させる。
地震時の水平力を、水平部材31を介して伝達するため、既存建物30の構造体との位置関係に制限されることなく、補強架構10を配置することができる。
According to the external reinforcing structure 1 of the present embodiment, the following effects are exhibited.
Since the horizontal force at the time of an earthquake is transmitted via the horizontal member 31, the reinforcement frame 10 can be arrange | positioned, without being restrict | limited to the positional relationship with the structure of the existing building 30. FIG.
補強柱11に当接面が曲面状の接触接合部材20を当接させているため、接合部が水平方向のみ支持する接合構造となる。そのため、補強架構10が負担する地震水平力により水平部材31に曲げモーメントが生じることがなく、水平部材31の鋼材量(鉄筋量)を増加させる必要がない。   Since the contact joining member 20 having a curved contact surface is brought into contact with the reinforcing column 11, a joining structure in which the joining portion supports only the horizontal direction is obtained. Therefore, a bending moment is not generated in the horizontal member 31 due to the seismic horizontal force borne by the reinforcing frame 10, and it is not necessary to increase the amount of steel material (the amount of reinforcing bars) of the horizontal member 31.
また、既存建物30に大変形が作用した場合でも、水平部材31に発生する曲げひびわれを低減することができる。   Further, even when a large deformation is applied to the existing building 30, bending cracks generated in the horizontal member 31 can be reduced.
水平部材31に配筋された鉄筋31aと補強柱11とが、接合部材20を介して接合されているため、補強柱11と水平部材31との応力伝達性能が高い。
また、補強架構10と既存建物30との間で、地震時のせん断力を互いに伝達するように構成されているため、所望の補強効果を確保することができる。
Since the reinforcing bars 31 a arranged in the horizontal member 31 and the reinforcing column 11 are joined via the joining member 20, the stress transmission performance between the reinforcing column 11 and the horizontal member 31 is high.
Moreover, since it is comprised so that the shearing force at the time of an earthquake may mutually be transmitted between the reinforcement frame 10 and the existing building 30, a desired reinforcement effect is securable.
また、外付け補強構造1は、水平部材31を有するあらゆる建物に採用することが可能である。
さらに、既存建物30を使用しながら施工を行うことが可能であるので、施工について時期的・時間的な制約を受けづらく、全体として短期施工が可能となり、費用の低減化を図ることもできる。
Further, the external reinforcing structure 1 can be employed in any building having the horizontal member 31.
Furthermore, since it is possible to perform construction while using the existing building 30, it is difficult for the construction to be restricted in terms of time and time, so that short-term construction is possible as a whole, and costs can be reduced.
以上、本発明に係る実施形態について説明したが、本発明は前記の実施形態に限られず、本発明の趣旨を逸脱しない範囲で適宜変更が可能である。
例えば、前記実施形態では、接触接合部材の補強柱との当接面が曲面状である場合について説明したが、接触接合部材の当接面は必ずしも曲面状である必要はない。
As mentioned above, although embodiment which concerns on this invention was described, this invention is not restricted to the said embodiment, In the range which does not deviate from the meaning of this invention, it can change suitably.
For example, in the above-described embodiment, the case where the contact surface of the contact bonding member with the reinforcing column is a curved surface has been described. However, the contact surface of the contact bonding member is not necessarily a curved surface.
前記実施形態では、既存の水平部材に貫通孔を形成し、この貫通孔を利用して補強架構を設置する場合について説明したが、補強架構を設置するための水平部材を備えていない場合には、既存建物の外面に貫通部が形成された水平部材を一体に形成してもよい。   In the above-described embodiment, the case where a through hole is formed in an existing horizontal member and the reinforcing frame is installed using the through hole has been described. However, when the horizontal member for installing the reinforcing frame is not provided, In addition, a horizontal member having a penetrating portion formed on the outer surface of an existing building may be integrally formed.
前記実施形態では、補強架構として、補強柱と補強梁により構成されたものを使用したが、補強架構はブレースを備えていてもよい。
また、前記実施形態では、補強梁を階毎に2段配置する場合について説明したが、補強梁は、必ずしも2段である必要はなく、1段や3段以上配置してもよい。
In the above embodiment, the reinforcement frame is composed of reinforcement columns and beams, but the reinforcement frame may be provided with braces.
Moreover, although the said embodiment demonstrated the case where 2 steps | paragraphs of reinforcement beams are arrange | positioned for every floor, the reinforcement beam does not necessarily need to be 2 steps | paragraphs, You may arrange | position 1 step | paragraph or 3 steps | paragraphs or more.
また、前記実施形態では、貫通部として、水平部材に貫通孔を形成する場合について説明したが、貫通部は必ずしも貫通孔である必要はない。例えば、水平部材の先端部に補強架構を配置する場合には、水平部材の端部に貫通部としての溝(切り欠き)を形成すればよい。   Moreover, although the said embodiment demonstrated the case where a through-hole was formed in a horizontal member as a penetration part, a penetration part does not necessarily need to be a through-hole. For example, when a reinforcing frame is disposed at the tip of the horizontal member, a groove (notch) as a penetrating portion may be formed at the end of the horizontal member.
また、前記実施形態では、補強架構を鉄骨構造により構成する場合について説明したが、補強架構の構成は鉄骨構造に限定されるものではなく、例えば、一部または全部を鉄筋コンクリート構造により構成してもよい。   Moreover, although the said embodiment demonstrated the case where a reinforcement frame was comprised with a steel frame structure, the structure of a reinforcement frame is not limited to a steel frame structure, For example, even if one part or all is comprised with a reinforced concrete structure. Good.
前記実施形態では、横架工程を実施した後に接合工程を実施する場合について説明したが、接合工程は横架工程の前に実施してもよい。つまり、補強梁を横架する前に、補強柱と水平部材とを接合してもよい。また、上下のフレーム部材の接合は、下側のフレーム部材を水平部材と接合してから(接触接合部材を配設してから)行ってもよい。   In the embodiment, the case where the joining step is performed after the horizontal step is performed has been described. However, the joining step may be performed before the horizontal step. That is, the reinforcing column and the horizontal member may be joined before the reinforcing beam is horizontally mounted. The upper and lower frame members may be joined after the lower frame member is joined to the horizontal member (after the contact joining member is disposed).
前記実施形態では、上下に配設された十字状のフレーム部材を接合することにより補強フレームを形成する場合について説明したが、補強架構の形成方法は限定されるものではない。例えば、柱部材を貫通部に貫通させた後、この柱部材に梁部材を接合することで補強フレームを形成してもよい。また、予めキ字状に形成された補強フレームを配設してもよい。   In the above-described embodiment, the case where the reinforcing frame is formed by joining the cross-shaped frame members arranged above and below is described, but the method of forming the reinforcing frame is not limited. For example, the reinforcing frame may be formed by passing a column member through the penetrating portion and then joining a beam member to the column member. Further, a reinforcing frame previously formed in a letter shape may be provided.
1 外付け補強構造
10 補強架構
11 補強柱
12 補強梁
20 接触接合部材
30 既存建物
31 水平部材
31a 鉄筋
32 貫通孔(貫通部)
40 固化材
DESCRIPTION OF SYMBOLS 1 External reinforcement structure 10 Reinforcement frame 11 Reinforcement pillar 12 Reinforcement beam 20 Contact joining member 30 Existing building 31 Horizontal member 31a Reinforcement 32 Through-hole (penetration part)
40 Solidification material

Claims (3)

  1. 既存建物の外周部に取り付く水平部材と、前記既存建物の外周部の外側に設置される補強架構と、を備える既存建物の外付け補強構造であって、
    前記補強架構が、前記水平部材に形成された貫通部を貫通して配設された補強柱と、前記補強柱と直交する方向に前記補強柱の側面から延設された補強梁とを備えており、
    前記貫通部には、前記補強柱の側面に当接するように接触接合部材を配置し、地震時に補強柱が水平部材に対して材軸方向に移動または回転可能に接合されることを特徴とする既存建物の外付け補強構造。
    An external reinforcement structure for an existing building comprising a horizontal member attached to the outer periphery of the existing building, and a reinforcing frame installed outside the outer periphery of the existing building,
    The reinforcing frame includes a reinforcing column disposed through a penetrating portion formed in the horizontal member, and a reinforcing beam extending from a side surface of the reinforcing column in a direction orthogonal to the reinforcing column. And
    A contact joining member is disposed in the penetrating portion so as to abut against a side surface of the reinforcing column, and the reinforcing column is joined to a horizontal member so as to be movable or rotatable in a material axis direction during an earthquake. External reinforcement structure for existing buildings.
  2. 前記接触接合部材の前記補強柱との当接面が、曲面状であることを特徴とする、請求項1に記載の既存建物の外付け補強構造。   2. The external reinforcement structure for an existing building according to claim 1, wherein a contact surface of the contact joining member with the reinforcing column is a curved surface.
  3. 既存建物の外周部に取り付く水平部材に貫通部を形成する貫通部形成工程と、
    前記貫通部に補強柱を配置する補強柱設置工程と、
    隣り合う前記補強柱に補強梁を横架させる横架工程と、
    前記貫通部の内周面に接触接合部材を固定する接合部材取付工程と、を備える既存建物の補強方法であって、
    前記接触接合部材と前記補強柱とを当接させることを特徴とする、既存建物の補強方法。
    A penetrating part forming step for forming a penetrating part in a horizontal member attached to the outer periphery of an existing building;
    A reinforcing column installation step of arranging a reinforcing column in the penetrating portion;
    A horizontal step of horizontally extending a reinforcing beam to the adjacent reinforcing columns;
    A joining member attaching step of fixing a contact joining member to the inner peripheral surface of the penetrating part,
    A method for reinforcing an existing building, wherein the contact joining member and the reinforcing column are brought into contact with each other.
JP2012160117A 2012-07-19 2012-07-19 External reinforcement structure of existing building and reinforcement method of existing building Active JP5863590B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012160117A JP5863590B2 (en) 2012-07-19 2012-07-19 External reinforcement structure of existing building and reinforcement method of existing building

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012160117A JP5863590B2 (en) 2012-07-19 2012-07-19 External reinforcement structure of existing building and reinforcement method of existing building

Publications (2)

Publication Number Publication Date
JP2014020119A true JP2014020119A (en) 2014-02-03
JP5863590B2 JP5863590B2 (en) 2016-02-16

Family

ID=50195338

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012160117A Active JP5863590B2 (en) 2012-07-19 2012-07-19 External reinforcement structure of existing building and reinforcement method of existing building

Country Status (1)

Country Link
JP (1) JP5863590B2 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09256645A (en) * 1996-03-22 1997-09-30 Yahagi Kensetsu Kogyo Kk Existing column reinforcing construction for multilayered building
JP2000345719A (en) * 1999-06-07 2000-12-12 Yahagi Construction Co Ltd Reinforcing method of through opening in existing bearing wall
JP2002213085A (en) * 2001-01-23 2002-07-31 Oriental Construction Co Ltd Reinforcing structure for existing building
JP2006312859A (en) * 2005-04-06 2006-11-16 Toyohashi Univ Of Technology Aseismatic reinforcing structure and aseismatic reinforcing method for existing building
JP2009002079A (en) * 2007-06-22 2009-01-08 Takenaka Komuten Co Ltd Aseismatic reinforcing construction method for existing building
JP2010196270A (en) * 2009-02-23 2010-09-09 Taisei Corp Structure for reinforcing existing building
JP2012007426A (en) * 2010-06-28 2012-01-12 Partners In Sustaining Architectural Technology And Skills Arrangement method of column main reinforcement in earthquake strengthening construction method of existing rc column and earthquake strengthening structure of existing rc column

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09256645A (en) * 1996-03-22 1997-09-30 Yahagi Kensetsu Kogyo Kk Existing column reinforcing construction for multilayered building
JP2000345719A (en) * 1999-06-07 2000-12-12 Yahagi Construction Co Ltd Reinforcing method of through opening in existing bearing wall
JP2002213085A (en) * 2001-01-23 2002-07-31 Oriental Construction Co Ltd Reinforcing structure for existing building
JP2006312859A (en) * 2005-04-06 2006-11-16 Toyohashi Univ Of Technology Aseismatic reinforcing structure and aseismatic reinforcing method for existing building
JP2009002079A (en) * 2007-06-22 2009-01-08 Takenaka Komuten Co Ltd Aseismatic reinforcing construction method for existing building
JP2010196270A (en) * 2009-02-23 2010-09-09 Taisei Corp Structure for reinforcing existing building
JP2012007426A (en) * 2010-06-28 2012-01-12 Partners In Sustaining Architectural Technology And Skills Arrangement method of column main reinforcement in earthquake strengthening construction method of existing rc column and earthquake strengthening structure of existing rc column

Also Published As

Publication number Publication date
JP5863590B2 (en) 2016-02-16

Similar Documents

Publication Publication Date Title
US9534376B2 (en) Laser configured hook column anchors and anchoring systems utilizing the same
JP4414834B2 (en) Construction method of earthquake-resistant wall
JP2005523393A (en) Construction method of high-rise building structure with steel frame and reinforced concrete structure
JP4823790B2 (en) Column unit and method of building building using column unit
JP2004176460A (en) Earthquake-resistant reinforcing structure
JP4649360B2 (en) Seismic joint structure and construction method thereof
JP2015086692A (en) Structural steelwork pile-column-underground beam joining part integration method
KR101228012B1 (en) Precast concrete column connecting structure
KR20060024850A (en) Steel-concrete sandwitch type hybrid beam and high strength hybrid structure system using the same
KR100995459B1 (en) Reinforcement steel beam with shear reinforcement material
JP2010138658A (en) Seismic strengthening structure of existing building
JP2009249851A (en) Seismic strengthening method for existing building
KR101295740B1 (en) Joint of Steel Column
KR101377327B1 (en) Method for reinforcing seismic capability of existing moment frames buildings of reinforced concrete by section enlargement
KR101565543B1 (en) A Joint Structures Between Steel Frame and Iron Concrete and A Joint Method
KR100626543B1 (en) Hybrid structure system of precast concrete beam and steel beam, precast concrete beam with bracket for connection with steel beam
JP2006016814A (en) Pole/beam connection structure of steel structure
KR101619067B1 (en) Fabricated Column Structure with Jointing Structure of the Beam
JP2005200928A (en) Reinforcing structure of columnar construction
KR101150237B1 (en) Seismic retrofit apparatus and method for masonry structures using steel wall-column
KR100626544B1 (en) Hybrid Beam of Steel Plate and Concrete, and High Streng Hybrid Structure System Using The Same
JP6045855B2 (en) Anti-vibration ceiling structure
KR101995497B1 (en) the rigid connection structure between the upper precast concrete column and the lower precast concrete column and the rigid connection structure of the precast concrete girder using the same
JP2011069195A (en) Column-to-beam joint structure for building, building and joining method
JP5316490B2 (en) Steel sheet pile underground wall structure

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20150210

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20151112

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: 20151124

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20151222

R150 Certificate of patent or registration of utility model

Ref document number: 5863590

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150