JP2010150755A - Foundation reinforcing structure - Google Patents

Foundation reinforcing structure Download PDF

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JP2010150755A
JP2010150755A JP2008327461A JP2008327461A JP2010150755A JP 2010150755 A JP2010150755 A JP 2010150755A JP 2008327461 A JP2008327461 A JP 2008327461A JP 2008327461 A JP2008327461 A JP 2008327461A JP 2010150755 A JP2010150755 A JP 2010150755A
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foundation
reinforcing
bonded
fiber sheet
fiber
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JP5356010B2 (en
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Junichi Tezuka
純一 手塚
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J KENCHIKU SYST KK
Kenchiku Syst Kk J
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J KENCHIKU SYST KK
Kenchiku Syst Kk J
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a foundation reinforcing structure capable of efficiently preventing the generation of a structural crack in a foundation. <P>SOLUTION: The foundation reinforcing structure is constituted by sticking a horizontal fiber sheet 3a whose longitudinal direction is the horizontal direction with respect to a side face 2b of a continuous footing 2 and sticking a vertical fiber sheet 3b whose longitudinal direction is the vertical direction with respect to corners of the continuous footing 2 and the side face 2b or the like of the continuous footing 2 immediately below a column 5 at an interval therebetween by overlapping it on the horizontal fiber sheet 3a. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、構造物の基礎補強構造に関し、無筋コンクリート基礎、もしくは、鉄筋の配筋不足や、ひび割れ等劣化した鉄筋コンクリート基礎、またはべた基礎の立上り部分などからなる基礎の補強構造に関する。   The present invention relates to a foundation reinforcing structure for a structure, and more particularly, to a reinforcing structure for a foundation composed of an unreinforced concrete foundation, a reinforced concrete foundation that has deteriorated, such as a lack of reinforcing bars, cracks, or a solid foundation.

最近の住宅の基礎は、鉄筋コンクリート構造の布基礎やべた基礎が施工されることが多く、地盤沈下や地震に対して所定の強度を有する構造になっていることがほとんどである。これは、昭和56年6月に建築基準法が改正され、「新耐震基準」として壁量規定の見直しや、構造用合板や石膏ボード等の面材を張った壁などが追加され、床面積あたりの必要壁長さや、軸組の種類・倍率が改定された。改正後に建てられた住宅などは、阪神・淡路大震災で倒壊などの被害が少なかったとされている。また、平成12年には建築基準法の大改正と品確法の施行により、地盤の地耐力による基礎構造(布基礎、ベタ基礎、杭基礎)が規定され、耐力壁の配置にバランス計算、もしくは偏心率計算が必要となり、筋交いの端部と耐力壁の脇の柱頭・柱脚の仕様やホールダウン金物などに関する基準化がなされている。
しかし、特に昭和56年6月以前の住宅においては、無筋コンクリート構造の布基礎や鉄筋の少ない基礎が施工されたケースが多い。これらのコンクリート構造の布基礎では、引張力を負担する鉄筋が無い、又は少ないため強度が不足し、面内曲げモーメントによる構造的ひび割れが生じるなどの問題があり、何らかの補強対策を施すことが必要とされている。
補強方法としては、既設の無筋コンクリート構造の基礎に鉄筋コンクリートの増し打ちを行う方法が行われている。
また、高引張り強度を有する繊維素材をシート状にした繊維シートを基礎の側面に接着し、基礎に作用する引張力を繊維シートに負担させて基礎に生じる構造的ひび割れを防止する方法が提案されている。特許文献1に示す既存建築物の基礎の補強方法では、無筋コンクリート構造の基礎の両面に基礎のフーチング上の立ち上がり部から基礎天端まで所望の水平長さ範囲で繊維シートを接着している。
また、地震などの水平力が構造物に加わると、耐力壁端部の柱に生じる引抜き力により、その柱下の土台を基礎に固定するアンカーボルト埋設部分で、柱の引抜きによるアンカーボルトの引張力や水平力によるせん断力で構造的ひび割れが生じやすい。また、基礎に形成された例えば床下換気口などの開口部の周りや、基礎の出隅、入隅部分などでは部分的なせん断破壊が生じやすい。
特許文献2に示す建築物の基礎の補強方法では、床下換気口などの開口部周りや、柱下の引き抜き力が作用する部分に斜めクロス状に編んだ繊維シートを接着している。
特開2006−132081号公報 特開2006−57433号公報
The foundations of recent houses are often constructed with reinforced concrete cloth foundations or solid foundations, and most of them have a predetermined strength against ground subsidence and earthquakes. This is because the Building Standards Act was amended in June 1981, and the “new earthquake resistance standard” was revised, and the walls covered with face materials such as structural plywood and plasterboard were added. The required wall length and the type and magnification of the shaft have been revised. The houses built after the revision are said to have suffered less damage due to the Great Hanshin-Awaji Earthquake. Also, in 2000, the foundation structure (cloth foundation, solid foundation, pile foundation) by the ground strength of the ground was defined by the major revision of the Building Standards Act and the enforcement of the Quality Assurance Law, and the balance calculation was calculated for the placement of the bearing walls, or Eccentricity calculation is required, and standardization is made regarding the specifications of the end of the bracing and the side of the bearing wall, the stigma and pedestal, and hole-down hardware.
However, especially in houses before June 1981, there are many cases where a fabric foundation with an unreinforced concrete structure or a foundation with few reinforcing bars has been constructed. These concrete structure fabric foundations have problems such as lack of strength due to the lack of or few reinforcing bars that bear tensile force, and structural cracks due to in-plane bending moments. It is necessary to take some reinforcement measures. It is said that.
As a reinforcing method, there is a method in which reinforced concrete is struck on the foundation of an existing unreinforced concrete structure.
In addition, a method has been proposed in which a fiber sheet in the form of a fiber material having a high tensile strength is bonded to the side surface of the foundation, and a tensile force acting on the foundation is applied to the fiber sheet to prevent structural cracks that occur in the foundation. ing. In the reinforcement method of the foundation of the existing building shown in patent document 1, the fiber sheet is adhere | attached in the desired horizontal length range from the standup | rising part on a foundation footing to a foundation top edge on both surfaces of the foundation of an unreinforced concrete structure. .
In addition, when a horizontal force such as an earthquake is applied to the structure, the anchor bolt is pulled by pulling out the column at the anchor bolt buried portion that fixes the foundation under the column by the pulling force generated at the column at the end of the bearing wall. Structural cracking is likely to occur due to shear force due to force or horizontal force. Also, partial shear failure is likely to occur around openings formed in the foundation, such as underfloor ventilation openings, and at the corners of the foundation and the corners of the foundation.
In the method for reinforcing a foundation of a building shown in Patent Document 2, a fiber sheet knitted in an oblique cross shape is bonded around an opening such as an underfloor ventilation opening or a portion where a pulling force under a pillar acts.
JP 2006-132081 A JP 2006-57433 A

しかしながら、従来の無筋コンクリートの基礎の耐震補強方法では以下のような問題があった。
鉄筋コンクリートの増し打ちによる補強は、鉄筋コンクリートの打ち増しを既設の基礎と同じかそれ以上の幅とする必要があり、工期的、費用的にも実用的ではなかった。また、鉄筋コンクリートの増し打ちによって建物の荷重が増えてしまい、基礎が配設されている地盤が軟弱地盤の場合には、地盤沈下の恐れが生じるという問題があった。
また、特許文献1に示す無筋コンクリート構造の布基礎の両側面に基礎の立ち上がり部から天端まで繊維シートを接着して全体に同一な補強を行う方法では地盤や構造物の基礎の状況によっては過度の補強構造となってしまう。また、特許文献2に示す方法は開口部の周りなど構造的ひび割れの生じやすい部分のみ補強を行う方法で、基礎を全体的に補強する方法ではなかった。
However, conventional seismic reinforcement methods for unreinforced concrete foundations have the following problems.
Reinforcement by reinforced concrete reinforcement was not practical in terms of construction period and cost because the reinforcement of reinforced concrete had to be the same as or larger than the existing foundation. In addition, the load of the building is increased due to the reinforcement of the reinforced concrete, and when the ground on which the foundation is disposed is a soft ground, there is a problem that the ground may sink.
Moreover, in the method of adhering the fiber sheet from the rising part of the foundation to the top edge to the both sides of the cloth foundation of the unreinforced concrete structure shown in Patent Document 1, the entire reinforcement is the same depending on the condition of the ground and the foundation of the structure. Becomes an excessive reinforcement structure. Moreover, the method shown in Patent Document 2 is a method of reinforcing only a portion where structural cracks are likely to occur, such as around an opening, and is not a method of reinforcing the foundation as a whole.

本発明は、上述する問題点に鑑みてなされたもので、建物の基礎部分の荷重を増やさずに、構造物の形状や重さ、基礎の状況及び地盤の地耐力に合わせて効率的に補強できて、基礎に生じるせん断や曲げ破壊による構造的ひび割れを防ぐことができ、すでに構造的ひび割れが生じている基礎にも補強することができる基礎補強構造を提供することを目的とする。   The present invention has been made in view of the above-described problems, and efficiently reinforces the structure according to the shape and weight of the structure, the condition of the foundation, and the ground strength of the ground without increasing the load of the foundation portion of the building. An object of the present invention is to provide a foundation reinforcing structure that can prevent structural cracks caused by shearing and bending fracture occurring in the foundation and can reinforce foundations that have already undergone structural cracking.

上記目的を達成するため、本発明に係る基礎補強構造は、構造物の基礎に生じるせん断や曲げ破壊を抑制し、基礎の耐震性を向上するための基礎補強構造であって、基礎の側面に部分的に補強部材が接着されることを特徴とする。
本発明では、要望される補強強度にあわせて構造物の基礎の側面に補強部材を部分的に接着しているので、過剰な補強構造となることがなく、建物及び地盤の状況に合わせて基礎を補強することができる。
In order to achieve the above object, the foundation reinforcing structure according to the present invention is a foundation reinforcing structure for suppressing shear and bending fracture occurring in the foundation of the structure and improving the earthquake resistance of the foundation, and is provided on the side of the foundation. The reinforcing member is partially bonded.
In the present invention, since the reinforcing member is partially bonded to the side surface of the foundation of the structure in accordance with the desired reinforcement strength, there is no excessive reinforcement structure, and the foundation is adapted to the situation of the building and the ground. Can be reinforced.

また、本発明に係る基礎補強構造では、補強部材はシート状の繊維補強材であって、基礎の両側面の地盤面から基礎立ち上がりの天端の範囲内に接着されている構成としてもよい。
本発明では、基礎の両側面に地盤面から基礎の天端の範囲内に、繊維補強材が接着されているので、主に基礎天端付近の構造的ひび割れの要因となるアンカーボルトのせん断力などによるひび割れや、基礎に大きな鉛直荷重がかかる重い建物(重い屋根・外壁、積雪荷重など)により、ある程度固い地盤で、図19に示すような地耐力の反力による面内曲げ応力による構造的ひび割れが地盤面上に生じやすい場合の基礎を補強することができる。これにより、ある程度固い地盤上の重い建物の二階建て及び下屋部の基礎や、重い建物の平屋建ての基礎に適用することができる。
Further, in the foundation reinforcing structure according to the present invention, the reinforcing member may be a sheet-like fiber reinforcing material, and may be bonded within the range of the top edge of the foundation rising from the ground surface on both sides of the foundation.
In the present invention, since the fiber reinforcing material is bonded to the both sides of the foundation within the range from the ground surface to the top of the foundation, the shearing force of the anchor bolt that mainly causes structural cracks near the top of the foundation. Due to in-plane bending stress due to the reaction force of ground strength as shown in Fig. 19 due to cracks due to etc. and heavy buildings (heavy roof / outer wall, snow load etc.) where a large vertical load is applied to the foundation, etc. It is possible to reinforce the foundation when cracks are likely to occur on the ground surface. Thereby, it can apply to the foundation of the two-story and the lower part of a heavy building on the hard ground to some extent, and the foundation of a one-story building of a heavy building.

また、本発明に係る基礎補強構造では、補強部材はシート状の繊維補強材であって、構造物の外周に配設された基礎の外側側面のフーチング上の立ち上がり部から基礎天端の範囲内に接着されている構成としてもよい。
本発明では、構造物の外周に配設された基礎の外側側面のフーチング上の立ち上がり部から基礎天端の範囲内に、繊維補強材が接着されているので、主に立ち上がり部の天端付近と地盤面下に構造的ひび割れが生じやすい、軟らかい土質の層を多く含んだ地盤上の基礎を補強することができる。これは、部位的な地耐力不足や建物荷重の不均衡などで不同沈下による強制的な曲げ応力が働き、基礎立ち上がり部の上側又は下側が部位的に引張側となる構造的ひび割れが生じやすい基礎を補強する。これにより、比較的軟らかい地盤上の軽い建物(軽い屋根・外壁、少ない積雪量など)の二階建て及び下屋部分の基礎や、重い建物の平屋建ての基礎に適用することができる。
Further, in the foundation reinforcing structure according to the present invention, the reinforcing member is a sheet-like fiber reinforcing material, and is within a range from the rising portion on the footing on the outer side surface of the foundation disposed on the outer periphery of the structure to the top of the foundation. It is good also as a structure adhere | attached on.
In the present invention, since the fiber reinforcing material is adhered within the range from the rising portion on the footing on the outer side surface of the foundation disposed on the outer periphery of the structure to the top of the foundation, mainly near the top of the rising portion. It is possible to reinforce the foundation on the ground, which contains many soft soil layers that are prone to structural cracks below the ground surface. This is because the foundation is prone to structural cracks where the upper or lower side of the foundation rises locally as the tensile side due to forced bending stress due to non-settlement due to insufficient local strength or imbalance in building load. Reinforce. Thereby, it can apply to the foundation of the two-story and the lower part of a light building (light roof, outer wall, a small amount of snow, etc.) on a relatively soft ground, or the foundation of a one-story building of a heavy building.

また、本発明に係る基礎補強構造では、補強部材はシート状の繊維補強材であって、基礎の片側側面の地盤面から基礎の天端の範囲内に接着されている構成としてもよい。
本発明では、基礎の片側側面の地盤面から基礎の天端の範囲内に、繊維補強材が接着されているので、アンカーボルトによる構造的ひび割れが生じやすい基礎立ち上がり部の天端付近の補強や、固い地盤で不同沈下のおそれの少ない地盤上の基礎を補強することができる。これにより、固く不同沈下のおそれの少ない地盤上の軽い建物の二階建て及び下屋部分の基礎や、軽い建物の平屋建ての基礎に適用することができる。
Moreover, in the foundation reinforcement structure which concerns on this invention, a reinforcement member is a sheet-like fiber reinforcement material, Comprising: It is good also as a structure adhere | attached in the range of the top end of a foundation from the ground surface of the one side surface of a foundation.
In the present invention, since the fiber reinforcing material is bonded within the range from the ground surface on one side surface of the foundation to the top edge of the foundation, reinforcement near the top edge of the foundation rising portion where structural cracking is likely to occur due to anchor bolts. It is possible to reinforce the foundation on the ground that is hard and has a low risk of uneven settlement. Thereby, it can apply to the foundation of the two-story and the bottom part of the light building on the ground which is hard to be hard and uneven settlement, and the foundation of the one-story building of the light building.

また、本発明に係る基礎補強構造では、補強部材はシート状の繊維補強材であって、構造物の外周に配設された基礎の内側側面の地盤面から基礎の天端の範囲内に接着されると共に、基礎の外側側面のフーチング上の立ち上がり部から基礎天端の範囲内に接着されている構成としてもよい。
本発明では、構造物の外周に配設された基礎の内側側面の地盤面から基礎の天端の範囲内と、基礎の外側側面のフーチング上の立ち上がり部から基礎天端の範囲内に繊維補強材が接着されているので、主に基礎の天端付近及び地盤面下に構造的ひび割れが生じやすく、比較的軟弱な地盤で不同沈下のおそれのある基礎を補強することができる。これは、地耐力不足で連続的な不同沈下や杭地業を行こなったことによる強制的な曲げ応力が働き、図20に示すような基礎立ち上がり部の上側及び下側が部位的に引張側となる構造的ひび割れが生じやすい基礎を補強する。これにより、比較的軟弱な地盤で不同沈下のおそれや柱状改良した地盤上の重い建物の二階建て及び下屋部分の基礎や、比較的軽い建物の三階建ての基礎に適用することができる。
Further, in the foundation reinforcing structure according to the present invention, the reinforcing member is a sheet-like fiber reinforcing material, and is bonded within the range from the ground surface on the inner side surface of the foundation disposed on the outer periphery of the structure to the top edge of the foundation. In addition, a configuration may be adopted in which bonding is performed within a range from the rising portion on the footing on the outer side surface of the foundation to the top of the foundation.
In the present invention, fiber reinforcement is provided within the range from the ground surface on the inner side surface of the foundation disposed on the outer periphery of the structure to the top edge of the foundation and from the rising portion on the footing on the outer side surface of the foundation to the range from the top edge of the foundation. Since the materials are bonded, structural cracks are likely to occur mainly near the top edge of the foundation and below the ground surface, and a foundation that may be subject to uneven settlement can be reinforced in a relatively soft ground. This is because of the forced bending stress due to the fact that the soil strength is insufficient and continuous uneven settlement and pile landing work, the upper and lower sides of the foundation rising part as shown in FIG. Reinforce foundations that are prone to structural cracking. Accordingly, the present invention can be applied to the foundations of two-story and lower-floor parts of heavy buildings on the ground with relatively soft ground, the possibility of uneven settlement, improved pillars, and three-story foundations of relatively light buildings.

また、本発明に係る基礎補強構造では、繊維補強材は長尺のシート状であって、繊維補強材の長手方向が水平方向となる横繊維補強材と、繊維補強材の長手方向が鉛直方向となる縦繊維補強材とからなる構成としてもよい。
本発明では、繊維補強材は基礎側面に水平方向及び鉛直方向に接着されるので、基礎に作用する面内曲げモーメントによって基礎の引張側に生じる構造的ひび割れや、柱の引き抜き力によって生じる土台アンカーボルトでの引張・せん断破壊、基礎出隅・入隅部などのせん断破壊、及び重い建物での鉛直荷重による部位的曲げ応力などによる構造的ひび割れを防ぐことができる。
Moreover, in the basic reinforcement structure according to the present invention, the fiber reinforcement is in the form of a long sheet, and the longitudinal direction of the fiber reinforcement is horizontal, and the longitudinal direction of the fiber reinforcement is vertical. It is good also as a structure which consists of the vertical fiber reinforcement material used.
In the present invention, since the fiber reinforcement is bonded to the side surface of the foundation in the horizontal direction and the vertical direction, a structural anchor generated on the tensile side of the foundation due to an in-plane bending moment acting on the foundation, or a base anchor generated by a pulling force of the column It is possible to prevent structural cracking due to tensile failure / shear failure with bolts, shear failure such as foundation corners / entry corners, and partial bending stress due to vertical load in heavy buildings.

また、本発明に係る基礎補強構造では、繊維補強材は長尺のシート状であって、繊維補強材の長手方向が水平方向となる横繊維補強材と、繊維補強材の長手方向が斜め方向となる斜め繊維補強材とからなる構成としてもよい。
本発明では、繊維補強材は基礎側面に水平方向及び斜め方向に接着されるので、基礎に作用する面内曲げモーメントによって基礎の引張側に生じる構造的ひび割れや、杭を用いた基礎のせん断変形によって生じる斜めの構造的ひび割れを防ぐことができる。
Further, in the basic reinforcement structure according to the present invention, the fiber reinforcement is in the form of a long sheet, and the longitudinal direction of the fiber reinforcement is horizontal, and the longitudinal direction of the fiber reinforcement is oblique. It is good also as a structure which consists of the diagonal fiber reinforcement which becomes.
In the present invention, since the fiber reinforcement is bonded horizontally and obliquely to the side of the foundation, structural cracks that occur on the tension side of the foundation due to in-plane bending moment acting on the foundation, and shear deformation of the foundation using the pile Diagonal structural cracks caused by can be prevented.

また、本発明に係る基礎補強構造では、補強部材はフラットバーのPC板としてもよい。
本発明では、補強部材はPC板なので、基礎に作用する引張力を負担すると共に、基礎に剛性を加えることができて、基礎の変形を防ぎ基礎に生じる構造的ひび割れを防ぐことができる。
In the foundation reinforcing structure according to the present invention, the reinforcing member may be a flat bar PC plate.
In the present invention, since the reinforcing member is a PC plate, it is possible to bear a tensile force acting on the foundation and to add rigidity to the foundation, thereby preventing the foundation from being deformed and preventing structural cracks generated in the foundation.

また、本発明に係る基礎の補強構造では、PC板と基礎の側面との間にはシート状の繊維補強材が接着されている構成としてもよい。
本発明では、プレキャストコンクリート板と基礎の接着面に繊維補強材を接着することにより、繊維補強材が基礎に作用する引張力を負担し、PC板によって基礎に剛性を加えることができるのでより強固に基礎を補強できて、基礎に生じるせん断及び曲げ破壊による構造的ひび割れを防ぐことができる。
Moreover, in the reinforcement structure of the foundation which concerns on this invention, it is good also as a structure by which the sheet-like fiber reinforcement is adhere | attached between the PC board and the side surface of the foundation.
In the present invention, the fiber reinforcement is bonded to the bonding surface between the precast concrete board and the foundation, so that the fiber reinforcement bears the tensile force acting on the foundation, and the PC board can add rigidity to the foundation. The foundation can be reinforced to prevent structural cracking due to shear and bending failure occurring in the foundation.

また、本発明に係る基礎の補強構造では、補強部材を基礎側面に接着する部分は、基礎に生じるせん断や曲げ破壊による構造的ひび割れが生じやすい、または生じている基礎や基礎が設置された地盤の状況により選択可能であることを特徴とする。
本発明では、補強部材を接着する部分を選択できることにより必要に応じた基礎補強を行うことができる。
Further, in the foundation reinforcing structure according to the present invention, the portion where the reinforcing member is bonded to the side surface of the foundation is prone to structural cracks due to shear or bending fracture occurring in the foundation, or the ground on which the foundation or foundation on which the foundation is installed is installed. It can be selected depending on the situation.
In the present invention, it is possible to perform basic reinforcement as necessary by selecting a portion to which the reinforcing member is bonded.

本発明によれば、構造物の基礎の側面に補強材を部分的に接着するので、要求される強度に合わせて基礎を補強できて、基礎に生じるせん断や曲げ破壊の防止及び耐震性の向上を実現することができる。
また、すでに構造的ひび割れが生じている基礎に対しても耐震性を向上させることができる。
According to the present invention, since the reinforcing material is partially bonded to the side surface of the foundation of the structure, the foundation can be reinforced in accordance with the required strength, and the shear and bending fracture occurring in the foundation can be prevented and the earthquake resistance can be improved. Can be realized.
In addition, earthquake resistance can be improved even for foundations on which structural cracks have already occurred.

以下、本発明の第一の実施の形態による基礎補強構造について、図1(a)、(b)、(c)に基づいて説明する。
図1(a)は本発明の第一の実施の形態による基礎補強構造の一例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。
Hereinafter, the basic reinforcement structure according to the first embodiment of the present invention will be described with reference to FIGS. 1 (a), (b), and (c).
FIG. 1A is a view showing an example of a basic reinforcing structure according to the first embodiment of the present invention, FIG. 1B is a sectional view of the basic reinforcing structure shown in FIG. 1A, and FIG. 1C is shown in FIG. It is a side view of a foundation reinforcement structure.

図1(a)、(b)、(c)に示すように、第一の実施の形態による基礎補強構造1aは、無筋コンクリート造や鉄筋の配筋不足での布基礎2の両側面2bに、繊維補強材の長尺の繊維シート3を、地盤G面から布基礎2の天端2aにわたって繊維シート3の長手方向が水平方向になるように接着されると共に、繊維シート3の長手方向が鉛直方向になるように所定の間隔をあけて接着される構成である。
布基礎2は、フーチング2cを備えた断面が略T字型形状をしており、上部には土台4及び柱5が配設され、土台の上方には図示しない壁材や床材などが配設されている。
As shown in FIGS. 1 (a), (b), and (c), the foundation reinforcing structure 1a according to the first embodiment is an unreinforced concrete structure or both sides 2b of the fabric foundation 2 due to insufficient reinforcement. The long fiber sheet 3 of the fiber reinforcing material is bonded so that the longitudinal direction of the fiber sheet 3 is horizontal from the ground G surface to the top end 2a of the fabric foundation 2, and the longitudinal direction of the fiber sheet 3 Is adhered with a predetermined interval so that the vertical direction is in the vertical direction.
The cloth base 2 has a substantially T-shaped cross section with a footing 2c, and a base 4 and a pillar 5 are disposed on the top, and a wall material and a floor material (not shown) are disposed above the base. It is installed.

繊維シート3は、例えば、アラミド繊維や炭素繊維などの引張強度の高い繊維を長尺のシート状に形成したもので、他にガラス繊維、ビニロン繊維、アクリル繊維、ナイロン繊維等の化学繊維や、これらの繊維を適宜組み合わせた繊維をシート状に形成したものでもよく、また、これらの繊維と金属製繊維とを複合させて形成したシートでもよい。繊維シート3はその幅が地盤G面から布基礎2の天端2aまでの長さの約1/3程の幅である。繊維シート3は貼る方向によって、長手方向が水平方向になるように布基礎2の側面2bに貼るものを横繊維シート3aとし、長手方向が鉛直方向になるように布基礎2の側面2bに貼るものを縦繊維シート3bとする。
横繊維シート3aは布基礎2の両側面2bの地盤G面から布基礎2の天端2aにわたって隙間をあけず3段に後述する接着方法によって接着される。縦繊維シート3bは、布基礎2のコーナー部分及び、柱5が立設された直下の布基礎2の側面2bなどに地盤G面から布基礎2の天端2aにわたって鉛直方向に接着される。このとき、縦繊維シート3bに先立って横繊維シート3aを布基礎2の側面に接着し、その上から縦繊維シート3bを重ねて接着すると施工性がよく、横繊維シート3a及び縦繊維シート3bが重なった部分の補強強度が増す。
The fiber sheet 3 is, for example, a fiber having a high tensile strength such as an aramid fiber or carbon fiber formed in a long sheet shape. Besides, a chemical fiber such as glass fiber, vinylon fiber, acrylic fiber, nylon fiber, A fiber in which these fibers are appropriately combined may be formed into a sheet shape, or a sheet formed by combining these fibers and metal fibers may be used. The width of the fiber sheet 3 is about 1/3 of the length from the ground G surface to the top end 2a of the fabric foundation 2. The fiber sheet 3 is attached to the side surface 2b of the fabric base 2 so that the longitudinal direction is horizontal, depending on the direction in which the fiber sheet 3 is applied, and is applied to the side surface 2b of the fabric base 2 so that the longitudinal direction is vertical. The thing is referred to as a vertical fiber sheet 3b.
The lateral fiber sheet 3a is bonded by a bonding method described later in three steps without a gap from the ground G surface of the both side surfaces 2b of the fabric foundation 2 to the top end 2a of the fabric foundation 2. The vertical fiber sheet 3b is bonded in the vertical direction from the ground G surface to the top end 2a of the fabric foundation 2 to the corner portion of the fabric foundation 2 and the side surface 2b of the fabric foundation 2 immediately below where the pillar 5 is erected. At this time, prior to the vertical fiber sheet 3b, the horizontal fiber sheet 3a is bonded to the side surface of the fabric base 2, and the vertical fiber sheet 3b is stacked and bonded on top of the horizontal fiber sheet 3b. Reinforcement strength of the overlapping part increases.

繊維シート3の接着方法は、まず布基礎2の側面2bを清掃し、側面2bの仕上げがモルタル仕上げの場合には、このモルタルを剥離し除去する。そして側面2bの繊維シート3の接着面に、例えばサンダーがけを行い表面のレイタンスや泥、油分などを除去して、接着面の平滑性を確保する。この時点で側面2bに構造的ひび割れが生じている場合は、ひび割れ部分に例えばエポキシ樹脂を注入してひび割れを接着補修しておく。
そして、接着面に下地処理用のプライマーを塗布し、プライマーが乾燥した後に下塗り用の接着剤を塗布し、繊維シート3を接着する。さらに、繊維シート3の上に上塗り用の接着剤を塗布し、例えばヘラなどでテンションを加えて繊維シート3に接着剤を浸透させる。必要に応じて上塗り用の接着剤の硬化前に珪砂を塗布して、モルタル仕上げの下地処理を行いモルタルの付着性を良くし、仕上げのモルタルを施工する。
As a method for bonding the fiber sheet 3, first, the side surface 2b of the fabric base 2 is cleaned, and when the finish of the side surface 2b is a mortar finish, the mortar is peeled off and removed. Then, for example, sanding is performed on the adhesive surface of the fiber sheet 3 on the side surface 2b to remove surface latency, mud, oil, and the like to ensure smoothness of the adhesive surface. If a structural crack has occurred on the side surface 2b at this point, an epoxy resin, for example, is injected into the cracked portion to repair the crack.
Then, a primer for base treatment is applied to the bonding surface, and after the primer is dried, an adhesive for undercoating is applied to bond the fiber sheet 3. Furthermore, an adhesive for overcoating is applied onto the fiber sheet 3, and tension is applied with, for example, a spatula to allow the adhesive to penetrate into the fiber sheet 3. If necessary, apply silica sand before curing the top coat adhesive, apply mortar finish to improve the adhesion of the mortar, and apply the finished mortar.

次に、上述した第一の実施の形態による基礎補強構造1aの作用効果について図面を用いて説明する。
繊維シート3は引張強度の高い繊維によって形成されているので、無筋コンクリート造などで引張耐力の少ない布基礎2に繊維シート3が接着されて一体化することで、布基礎2に作用する引張応力を負担し、布基礎2の側面2bに生じる面内曲げモーメントによる構造的ひび割れを防止する作用効果を奏する。さらに、縦繊維シート3bは柱5の立設された直下の布基礎2の側面2bに鉛直方面に接着されているので、布基礎2に作用する柱5の水平力での引き抜きによる引張力や鉛直荷重でのせん断力を負担することができて、布基礎2の側面2bに生じる構造的ひび割れを防ぐことができる。
また、繊維シート3が布基礎2の両側面2bの地盤G面から布基礎2の天端2aまで接着されているので、地盤G面下を掘削して布基礎2を補強することが困難な場合にも布基礎2の両側面2bを補強することができる。
Next, the effect of the foundation reinforcement structure 1a by 1st embodiment mentioned above is demonstrated using drawing.
Since the fiber sheet 3 is formed of fibers having high tensile strength, the fiber sheet 3 is bonded to and integrated with the cloth base 2 having a low tensile strength such as a non-reinforced concrete structure, thereby acting on the cloth base 2. It exerts an effect of bearing stress and preventing structural cracks due to in-plane bending moment generated on the side surface 2b of the fabric foundation 2. Furthermore, since the vertical fiber sheet 3b is bonded to the side surface 2b of the fabric base 2 directly below the column 5 in the vertical direction, the tensile force caused by pulling out with the horizontal force of the column 5 acting on the fabric foundation 2 A shearing force under a vertical load can be borne, and structural cracks that occur on the side surface 2b of the fabric foundation 2 can be prevented.
In addition, since the fiber sheet 3 is bonded from the ground G surface of the both side surfaces 2b of the fabric foundation 2 to the top end 2a of the fabric foundation 2, it is difficult to reinforce the fabric foundation 2 by excavating the ground G surface. Even in this case, both side surfaces 2b of the fabric foundation 2 can be reinforced.

上述した第一の実施の形態による基礎補強構造1aでは、布基礎2に作用する引張応力やせん断力を横繊維シート3a及び縦繊維シート3bが負担するので、面内曲げモーメントや柱の水平力での引き抜きによる引張力や鉛直荷重でのせん断力及び基礎の出隅・入隅部のせん断力などによって布基礎2に生じる構造的ひび割れを防ぐことができる。   In the foundation reinforcing structure 1a according to the first embodiment described above, since the transverse fiber sheet 3a and the longitudinal fiber sheet 3b bear the tensile stress and shearing force acting on the fabric foundation 2, the in-plane bending moment and the column horizontal force It is possible to prevent structural cracks generated in the fabric foundation 2 due to the tensile force due to pulling out at the shearing force, the shearing force due to the vertical load, the shearing force at the corner of the foundation and the corner of the foundation, and the like.

次に、第二の実施の形態について、添付図面に基づいて説明するが、上述の第一の実施の形態と同一又は同様な部材、部分には同一の符号を用いて説明を省略し、第一の実施の形態と異なる構成について説明する。
図2(a)は本発明の第二の実施の形態による基礎補強構造の一例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。
Next, the second embodiment will be described with reference to the accompanying drawings, but the same or similar members and parts as those in the first embodiment described above are denoted by the same reference numerals, and the description thereof is omitted. A configuration different from that of the embodiment will be described.
FIG. 2A is a view showing an example of a basic reinforcing structure according to the second embodiment of the present invention, FIG. 2B is a sectional view of the basic reinforcing structure shown in FIG. 2A, and FIG. 2C is shown in FIG. It is a side view of a foundation reinforcement structure.

図2(a)、(b)、(c)に示すように、第二の実施の形態による基礎補強構造1bでは、布基礎2の両側面2bの地盤G面から布基礎2の天端2aにわたって3段に接着された横繊維シート3aの上から、V字型を連ねたジグザグ状に他の繊維シート3が接着される構成である。ここで、V字型を連ねたジグザグ状に接着される繊維シート3を斜め繊維シート3cとし、斜め繊維シート3cの下端部は地盤G面下の布基礎2の側面2bに接着されてもよい。
横繊維シート3aは第一の実施の形態と同様に布基礎2の側面2bに接着され、斜め繊維シート3cは、横繊維シート3aの上から接着する。
As shown in FIGS. 2A, 2B, and 2C, in the foundation reinforcing structure 1b according to the second embodiment, the top edge 2a of the fabric foundation 2 from the ground G surface of the both side surfaces 2b of the fabric foundation 2 is obtained. The other fiber sheet 3 is bonded in a zigzag shape with a V-shape from above the horizontal fiber sheet 3a bonded in three steps. Here, the fiber sheet 3 that is bonded in a zigzag shape with a V-shape is used as the oblique fiber sheet 3c, and the lower end portion of the oblique fiber sheet 3c may be bonded to the side surface 2b of the cloth foundation 2 below the ground G surface. .
The horizontal fiber sheet 3a is bonded to the side surface 2b of the fabric base 2 as in the first embodiment, and the oblique fiber sheet 3c is bonded from above the horizontal fiber sheet 3a.

次に、上述した第二の実施の形態による基礎補強構造1bの作用効果について図面を用いて説明する。
第二の実施の形態による基礎補強構造1bでは、第一の実施の形態による基礎補強構造1bと同様に面内曲げモーメントにより布基礎2の側面2bに生じる構造的ひび割れを防ぐ作用効果がある。そして、斜め繊維シート3cはV字型を重ねたジグザグ状に接着されているので、布基礎2のせん断変形を効率的に防ぐことができ、布基礎2のせん断変形により布基礎2の側面2bに生じる斜めの構造的ひび割れも防ぐことができる。
Next, the effect of the foundation reinforcement structure 1b by 2nd embodiment mentioned above is demonstrated using drawing.
The foundation reinforcing structure 1b according to the second embodiment has an effect of preventing structural cracks generated on the side face 2b of the fabric foundation 2 due to the in-plane bending moment, similarly to the foundation reinforcing structure 1b according to the first embodiment. And since the diagonal fiber sheet 3c is adhere | attached in the zigzag shape which accumulated V shape, the shear deformation of the fabric foundation 2 can be prevented efficiently, and the side surface 2b of the fabric foundation 2 by the shear deformation of the fabric foundation 2 Diagonal structural cracks that occur can also be prevented.

次に、第三の実施の形態について、添付図面に基づいて説明するが、上述の各実施の形態と同一又は同様な部材、部分には同一の符号を用いて説明を省略し、各実施の形態と異なる構成について説明する。
図3(a)は本発明の第三の実施の形態による基礎補強構造の一例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。
Next, the third embodiment will be described with reference to the accompanying drawings. However, the same or similar members and parts as those of the above-described embodiments are denoted by the same reference numerals, and the description thereof is omitted. A configuration different from the form will be described.
FIG. 3A is a view showing an example of a basic reinforcing structure according to the third embodiment of the present invention, FIG. 3B is a sectional view of the basic reinforcing structure shown in FIG. 3A, and FIG. 3C is shown in FIG. It is a side view of a foundation reinforcement structure.

図3(a)、(b)、(c)に示すように、第三の実施の形態による基礎補強構造1cは、構造物の外周に配設された布基礎2の外側の側面2bに横繊維シート3a及び縦繊維シート3bを接着する構成である。
横繊維シート3aは布基礎2の側面2bに、地盤G面から布基礎2の天端2aにわたって3段に接着され、地盤G面下には横繊維シート3aの下端部を布基礎2のフーチング上の立ち上がり部2dに合わせて1段接着される。縦繊維シート3bは布基礎2のコーナー部分に布基礎2のフーチング上の立ち上がり部2dから布基礎2の天端2aにわたって接着される。
As shown in FIGS. 3 (a), 3 (b), and 3 (c), the foundation reinforcing structure 1c according to the third embodiment lies laterally on the outer side surface 2b of the fabric foundation 2 disposed on the outer periphery of the structure. It is the structure which adhere | attaches the fiber sheet 3a and the vertical fiber sheet 3b.
The lateral fiber sheet 3a is bonded to the side surface 2b of the fabric foundation 2 in three steps from the ground G surface to the top end 2a of the fabric foundation 2, and the lower end portion of the lateral fiber sheet 3a is footed to the fabric foundation 2 below the ground G surface. One step is bonded to the upper rising portion 2d. The vertical fiber sheet 3 b is bonded to the corner portion of the fabric foundation 2 from the rising portion 2 d on the footing of the fabric foundation 2 to the top end 2 a of the fabric foundation 2.

次に、上述した第三の実施の形態による基礎補強構造1cの作用効果について図面を用いて説明する。
第三の実施の形態による基礎補強構造1cでは、第一の実施の形態による基礎補強構造1bと同様に面内曲げモーメントにより布基礎2の側面2bに生じる構造的ひび割れを防ぐ作用効果がある。また、地盤G面下にも繊維シート3が接着されているので地盤G面下の布基礎2の側面2bを補強することができる。また、構造物外周の布基礎2の外側の側面2bを補強する場合に適している。
Next, the effect of the foundation reinforcement structure 1c by 3rd embodiment mentioned above is demonstrated using drawing.
The foundation reinforcing structure 1c according to the third embodiment has an effect of preventing structural cracks generated on the side face 2b of the fabric foundation 2 due to the in-plane bending moment, similarly to the foundation reinforcing structure 1b according to the first embodiment. Further, since the fiber sheet 3 is bonded to the ground G surface, the side surface 2b of the fabric foundation 2 below the ground G surface can be reinforced. Moreover, it is suitable when reinforcing the outer side surface 2b of the fabric foundation 2 on the outer periphery of the structure.

次に、第四の実施の形態について、添付図面に基づいて説明するが、上述の各実施の形態と同一又は同様な部材、部分には同一の符号を用いて説明を省略し、各実施の形態と異なる構成について説明する。
図4(a)は本発明の第四の実施の形態による基礎補強構造の一例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。
Next, the fourth embodiment will be described with reference to the accompanying drawings, but the same or similar members and parts as those of the above-described embodiments will be denoted by the same reference numerals, and the description thereof will be omitted. A configuration different from the form will be described.
FIG. 4A is a view showing an example of a basic reinforcing structure according to the fourth embodiment of the present invention, FIG. 4B is a sectional view of the basic reinforcing structure shown in FIG. 4A, and FIG. 4C is shown in FIG. It is a side view of a foundation reinforcement structure.

図4(a)、(b)、(c)に示すように、第四の実施の形態による基礎補強構造1dは、第一の実施の形態による基礎補強構造1aの横繊維シート3a及び縦繊維シート3bが、構造物の外周に配設された布基礎2の外側の側面2bのみに接着される構成である。   As shown in FIGS. 4A, 4B, and 4C, the foundation reinforcing structure 1d according to the fourth embodiment includes the transverse fiber sheet 3a and the longitudinal fibers of the foundation reinforcing structure 1a according to the first embodiment. The sheet 3b is configured to be bonded only to the outer side surface 2b of the fabric foundation 2 disposed on the outer periphery of the structure.

次に、上述した第四の実施の形態による基礎補強構造1dの作用効果について図面を用いて説明する。
第四の実施の形態による基礎補強構造1dでは、布基礎2に作用する面内曲げモーメントにより布基礎2の外側の側面2bに生じる構造的ひび割れを防ぐ作用効果がある。布基礎2の外側側面2bのみに繊維シート3が接着される構成なので、第一の実施の形態による基礎補強構造1aで補強する場合に比べて、布基礎2の外側の側面2bに面内曲げモーメントによる構造的ひび割れが生じやすく、布基礎2の構造や地盤の地耐力等の条件により要求される補強強度が少ない場合に適応できて、繊維シート3を接着する量が減るので、繊維シート3設置の労力やコストを減らすことができる。
Next, the function and effect of the foundation reinforcing structure 1d according to the above-described fourth embodiment will be described with reference to the drawings.
In the foundation reinforcing structure 1d according to the fourth embodiment, there is an effect of preventing structural cracks generated on the outer side surface 2b of the fabric foundation 2 due to the in-plane bending moment acting on the fabric foundation 2. Since the fiber sheet 3 is bonded only to the outer side surface 2b of the fabric foundation 2, in-plane bending is performed on the outer side surface 2b of the fabric foundation 2 as compared with the case where the reinforcement is performed by the foundation reinforcing structure 1a according to the first embodiment. Since structural cracking due to moment is likely to occur and the strength required by the structure of the fabric foundation 2 and the ground strength of the ground is low, the amount of adhesion of the fiber sheet 3 is reduced. Installation labor and cost can be reduced.

次に、第五の実施の形態について、添付図面に基づいて説明するが、上述の各実施の形態と同一又は同様な部材、部分には同一の符号を用いて説明を省略し、各実施の形態と異なる構成について説明する。
図5(a)は本発明の第五の実施の形態による基礎補強構造の一例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。
Next, a fifth embodiment will be described with reference to the accompanying drawings. However, the same or similar members and parts as those of the above-described embodiments are denoted by the same reference numerals, and description thereof is omitted. A configuration different from the form will be described.
FIG. 5A is a view showing an example of a basic reinforcing structure according to a fifth embodiment of the present invention, FIG. 5B is a sectional view of the basic reinforcing structure shown in FIG. 5A, and FIG. 5C is shown in FIG. It is a side view of a foundation reinforcement structure.

図5(a)、(b)、(c)に示すように、第五の実施の形態による基礎補強構造1eは、横繊維シート3a及び縦繊維シート3bが、構造物の外周に配設された布基礎2の外側の側面2bの布基礎2のフーチング上の立ち上がり部2dから基礎天端2aまでと、内側の側面2bの地盤G面から布基礎2の天端2aまでに接着される構成である。   As shown in FIGS. 5 (a), 5 (b), and 5 (c), the basic reinforcing structure 1e according to the fifth embodiment includes a transverse fiber sheet 3a and a longitudinal fiber sheet 3b arranged on the outer periphery of the structure. The structure which adhere | attaches from the standup | rising part 2d on the footing of the fabric foundation 2 of the outer side surface 2b of the fabric foundation 2 to the foundation top end 2a, and the ground G surface of the inner side surface 2b to the top end 2a of the fabric foundation 2 It is.

次に、上述した第五の実施の形態による基礎補強構造1eの作用効果について図面を用いて説明する。
第五の実施の形態による基礎補強構造1eでは、第一の実施の形態による基礎補強構造1aと同様に、布基礎2に作用する面内曲げモーメントにより布基礎2の側面2bに生じる構造的ひび割れを防ぐ作用効果がある。そして、布基礎2の外側の側面2bには地盤G面にも繊維シート3が接着されているので、上述した各実施の形態による基礎補強構造に比べて布基礎2を強固に補強できる。また、コーナー部の縦繊維シート36が基礎の出隅部、入隅部のせん断補強となる。
Next, the effect of the foundation reinforcement structure 1e by 5th embodiment mentioned above is demonstrated using drawing.
In the foundation reinforcing structure 1e according to the fifth embodiment, the structural crack generated on the side surface 2b of the fabric foundation 2 by the in-plane bending moment acting on the cloth foundation 2 is the same as the foundation reinforcing structure 1a according to the first embodiment. Has the effect of preventing. And since the fiber sheet 3 is adhere | attached also on the ground G surface to the side surface 2b of the outer side of the fabric foundation 2, the fabric foundation 2 can be reinforced strongly compared with the foundation reinforcement structure by each embodiment mentioned above. Further, the vertical fiber sheet 36 at the corner portion serves as a shear reinforcement for the protruding corner portion and the entering corner portion of the foundation.

次に、第六の実施の形態について、添付図面に基づいて説明するが、上述の各実施の形態と同一又は同様な部材、部分には同一の符号を用いて説明を省略し、各実施の形態と異なる構成について説明する。
図6(a)は本発明の第六の実施の形態による基礎補強構造の一例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。
Next, the sixth embodiment will be described with reference to the accompanying drawings. The same or similar members and parts as those of the above-described embodiments are denoted by the same reference numerals, and the description thereof is omitted. A configuration different from the form will be described.
FIG. 6A is a view showing an example of a basic reinforcing structure according to the sixth embodiment of the present invention, FIG. 6B is a sectional view of the basic reinforcing structure shown in FIG. 6A, and FIG. 6C is shown in FIG. It is a side view of a foundation reinforcement structure.

図6(a)、(b)、(c)に示すように、第六の実施の形態による基礎補強構造1fは、構造物の外周に設置された布基礎2の外側の側面2bに、プレキャストコンクリート造の補強板(以下PC板11とする。)を接着する構造である。
PC板11は予め工場などで製作されて、所定の配筋がされたフラットバー部材で水平方向を軸方向として布基礎2の外側の側面2bに設置される。PC板11の両端部には凹凸のジョイント部11aが設けられて、要求される水平長さに合わせて接続可能である。PC板11は布基礎2の側面2bに上下2段に分けて設置され、上方のPC板11はその上端を布基礎2の天端2aと合わせて設置され、下方のPC板11はその下端を地盤G面とあわせて設置される。
As shown in FIGS. 6A, 6B, and 6C, the foundation reinforcing structure 1f according to the sixth embodiment is precast on the outer side surface 2b of the fabric foundation 2 installed on the outer periphery of the structure. This is a structure in which a concrete reinforcing plate (hereinafter referred to as PC plate 11) is bonded.
The PC board 11 is manufactured in advance in a factory or the like, and is a flat bar member with a predetermined bar arrangement, and is installed on the outer side surface 2b of the fabric foundation 2 with the horizontal direction as the axial direction. Concave and convex joint portions 11a are provided at both ends of the PC board 11, and can be connected in accordance with the required horizontal length. The PC board 11 is installed on the side surface 2b of the fabric foundation 2 in two upper and lower stages, the upper PC board 11 is installed with its upper end aligned with the top end 2a of the cloth foundation 2, and the lower PC board 11 is installed at its lower end. Is installed together with the ground G surface.

PC板11の固定方法は、まず、上述した各実施の形態による基礎補強構造と同様に布基礎2の側面2bの表面の平滑性を確保し、クラックの生じている部分には補修を施す。そして、布基礎2の側面2bにPC板11を固定するためのあと施工アンカー12の挿入口を所定箇所形成する。布基礎2の側面2bのPC板11の設置位置に接着剤を塗布すると共に、あと施工アンカー12の挿入口に接着剤を挿入し、PC板11を接着位置に貼り付けて仮止めし、あと施工アンカー12を挿入して、側面2bに塗布された接着剤の硬化後にPC板11の上から図示しない座金、スプリングワッシャー、ナットによって緊結する。また、図示しないが、PC板設置位置に繊維シートと接着剤を用いてPC板11を貼り付けることも可能とする。必要に応じて布基礎2の側面2b及びPC板11の表面をモルタル仕上げ、または耐候性の高い塗装仕上げとする。   As for the fixing method of the PC board 11, first, the smoothness of the surface of the side surface 2b of the fabric foundation 2 is ensured similarly to the foundation reinforcing structure according to each of the above-described embodiments, and repair is performed on the cracked portion. And the insertion port of the post-construction anchor 12 for fixing the PC board 11 to the side surface 2b of the fabric foundation 2 is formed at a predetermined location. Adhesive is applied to the installation position of the PC board 11 on the side surface 2b of the fabric foundation 2, and the adhesive is inserted into the insertion port of the post-construction anchor 12, and the PC board 11 is attached to the adhesion position and temporarily fixed. After the construction anchor 12 is inserted and the adhesive applied to the side surface 2b is cured, the construction anchor 12 is fastened from above the PC plate 11 by a washer, a spring washer and a nut (not shown). Although not shown, the PC board 11 can be attached to the PC board installation position using a fiber sheet and an adhesive. If necessary, the side surface 2b of the fabric base 2 and the surface of the PC plate 11 are mortar-finished or painted with high weather resistance.

次に、上述した第六の実施の形態による基礎補強構造1fの作用効果について図面を用いて説明する。
第六の実施の形態による基礎補強構造1fでは、PC板11があと施工アンカー12によって布基礎2に緊結されているので、布基礎2に剛性を加えることができて、布基礎2の曲げやせん断による変形を防ぎ布基礎2の側面2bに生じる構造的ひび割れを防ぐ作用効果を奏する。
Next, functions and effects of the foundation reinforcing structure 1f according to the sixth embodiment will be described with reference to the drawings.
In the foundation reinforcing structure 1f according to the sixth embodiment, since the PC board 11 is fastened to the cloth foundation 2 by the post-construction anchor 12, the cloth foundation 2 can be rigid, There exists an effect which prevents the deformation | transformation by shear and prevents the structural crack produced in the side surface 2b of the fabric base 2. FIG.

次に、第七の実施の形態について、添付図面に基づいて説明するが、上述の各実施の形態と同一又は同様な部材、部分には同一の符号を用いて説明を省略し、各実施の形態と異なる構成について説明する。
図7(a)は本発明の第七の実施の形態による基礎補強構造の一例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図、(d)は(a)に示す基礎補強構造に備える鋼管コッターの詳細を示す図である。
Next, the seventh embodiment will be described with reference to the accompanying drawings. However, the same or similar members and parts as those of the above-described embodiments are denoted by the same reference numerals, and description thereof is omitted. A configuration different from the form will be described.
FIG. 7A is a view showing an example of a basic reinforcing structure according to the seventh embodiment of the present invention, FIG. 7B is a sectional view of the basic reinforcing structure shown in FIG. 7A, and FIG. 7C is shown in FIG. The side view of a foundation reinforcement structure, (d) is a figure which shows the detail of the steel pipe cotter with which the foundation reinforcement structure shown to (a) is equipped.

図7に示すように、第七の実施の形態による基礎補強構造1gでは、第六の実施の形態による基礎補強構造1fのPC板11が固定された布基礎2の側面2bに繊維シート3を接着し、PC板11はあと施工アンカー12に代わって複数の小径の孔が形成された鋼管コッター15によって固定される構成である。   As shown in FIG. 7, in the foundation reinforcing structure 1g according to the seventh embodiment, the fiber sheet 3 is attached to the side surface 2b of the fabric foundation 2 to which the PC board 11 of the foundation reinforcing structure 1f according to the sixth embodiment is fixed. The PC plate 11 is bonded and fixed by a steel pipe cotter 15 in which a plurality of small-diameter holes are formed instead of the post-construction anchor 12.

PC板11及び繊維シート3の設置方法は、まず、第六の実施の形態と同様に表面を平滑にした布基礎2の側面2bに、鋼管コッター15を設置するための溝孔16を所定箇所設ける。また、PC板11には鋼管コッター15が挿通する孔17を設ける。
そして、布基礎2の側面2bにPC板が設置される部分に繊維シート3を接着し、この繊維シート3の上に速硬化型エポキシ樹脂を塗布してPC板11を接着しする。そして、溝孔16及びPC板11の孔17に速硬化型エポキシ樹脂を注入して、鋼管コッター15を挿入する。さらに、鋼管コッター15内側に接着剤を注入し、鋼管コッター15の内径に適合するキャップ18を押し込んで接着剤に圧力を加え、鋼管コッター15に形成された小径の孔15aから鋼管コッター15と布基礎2及びPC板11との隙間に接着剤を充填する。
As for the installation method of the PC board 11 and the fiber sheet 3, first, the slot 16 for installing the steel pipe cotter 15 is provided at a predetermined location on the side surface 2b of the fabric base 2 having a smooth surface as in the sixth embodiment. Provide. The PC plate 11 is provided with a hole 17 through which the steel pipe cotter 15 is inserted.
And the fiber sheet 3 is adhere | attached on the part by which the PC board is installed in the side surface 2b of the fabric foundation 2, and a fast curing epoxy resin is apply | coated on this fiber sheet 3, and the PC board 11 is adhere | attached. Then, a fast-curing epoxy resin is injected into the groove 16 and the hole 17 of the PC plate 11 and the steel pipe cotter 15 is inserted. Further, an adhesive is injected into the steel pipe cotter 15, a cap 18 adapted to the inner diameter of the steel pipe cotter 15 is pushed in, pressure is applied to the adhesive, and the steel pipe cotter 15 and the cloth are inserted through the small-diameter holes 15 a formed in the steel pipe cotter 15. Fill the gap between the foundation 2 and the PC board 11 with an adhesive.

第七の実施の形態による基礎補強構造1gでは、PC板11が鋼管コッター15と速硬化型エポキシ樹脂とによって布基礎2に広い接着面積で一体に緊結されて布基礎2の剛性がさらに増すと共に、繊維シート3が布基礎2に作用する引張力を負担することができるので、第六の実施の形態による基礎補強構造1fに比べ、布基礎2の側面2bに生じる構造的ひび割れをより効率的に防ぐ作用効果を奏する。   In the foundation reinforcing structure 1g according to the seventh embodiment, the PC board 11 is integrally fastened to the cloth foundation 2 with a wide bonding area by the steel pipe cotter 15 and the quick-curing epoxy resin, and the rigidity of the cloth foundation 2 is further increased. Since the fiber sheet 3 can bear the tensile force acting on the fabric foundation 2, the structural cracks generated on the side surface 2b of the fabric foundation 2 are more efficient than the foundation reinforcing structure 1f according to the sixth embodiment. It has the effect of preventing.

次に、第一の実施の形態の変形例について、添付図面に基づいて説明するが、上述の第一の実施の形態と同一又は同様な部材、部分には同一の符号を用いて説明を省略し、第一の実施の形態と異なる構成について説明する。
図8に示すように、基礎補強構造1hでは、横繊維シート3aは地盤G面から布基礎2の天端2aにわたって3段接着され、縦繊維シート3bはコーナーのみに接着されている。また、図9に示すように、基礎補強構造1iでは、横繊維シート3aは布基礎2の天端2aに上端を合わせた1段と、地盤G面に下端を合わせた1段の2段とし、この2段の横繊維シート3a間には間隔があいていて、縦繊維シート3bはコーナー部分のみに接着されている。また、図10に示すように、基礎補強構造1jでは、横繊維シート3aは布基礎2の天端2aに上端をあわせた横繊維シート3aの1段とし縦繊維シート3bはコーナー部分のみに接着されている。
Next, modifications of the first embodiment will be described with reference to the accompanying drawings, but the same or similar members and parts as those of the first embodiment described above are denoted by the same reference numerals and description thereof is omitted. A configuration different from that of the first embodiment will be described.
As shown in FIG. 8, in the foundation reinforcing structure 1h, the horizontal fiber sheet 3a is bonded in three stages from the ground G surface to the top end 2a of the fabric foundation 2, and the vertical fiber sheet 3b is bonded only to the corner. In addition, as shown in FIG. 9, in the foundation reinforcing structure 1i, the transverse fiber sheet 3a is composed of two stages, one stage where the upper end is aligned with the top end 2a of the fabric foundation 2, and one stage where the lower end is aligned with the ground G surface. The two-stage horizontal fiber sheets 3a are spaced apart, and the vertical fiber sheets 3b are bonded only to the corner portions. Further, as shown in FIG. 10, in the foundation reinforcing structure 1j, the transverse fiber sheet 3a is one level of the transverse fiber sheet 3a whose upper end is aligned with the top end 2a of the cloth foundation 2, and the longitudinal fiber sheet 3b is bonded only to the corner portion. Has been.

次に、第二の実施の形態の変形例について、添付図面に基づいて説明するが、上述の第二の実施の形態と同一又は同様な部材、部分には同一の符号を用いて説明を省略し、第二の実施の形態と異なる構成について説明する。
図11に示す基礎補強構造1kでは、第二の実施の形態による基礎補強構造1bの横繊維シート3a及び斜め繊維シート3cを構造物の外周に配設される布基礎2の外側側面2bのみに接着するものである。
Next, modifications of the second embodiment will be described with reference to the accompanying drawings, but the same or similar members and parts as those of the above-described second embodiment will be denoted by the same reference numerals, and description thereof will be omitted. A configuration different from the second embodiment will be described.
In the foundation reinforcement structure 1k shown in FIG. 11, the lateral fiber sheet 3a and the oblique fiber sheet 3c of the foundation reinforcement structure 1b according to the second embodiment are only applied to the outer side surface 2b of the fabric foundation 2 disposed on the outer periphery of the structure. Adhere.

次に、第三の実施の形態の変形例について、添付図面に基づいて説明するが、上述の第三の実施の形態と同一又は同様な部材、部分には同一の符号を用いて説明を省略し、第三の実施の形態と異なる構成について説明する。
図12、13に示す基礎補強構造ll、1mでは、第三の実施の形態による基礎補強構造1cの地盤G面上に接着される横繊維シート3aの段数をそれぞれ変形させたもので、基礎補強構造1lでは横繊維シート3aは布基礎2の天端2aに上端を合わせた1段と、地盤G面に下端を合わせた1段の2段とし、基礎補強構造1mでは布基礎2の天端2aに上端をあわせた横繊維シート3aの1段としている。
Next, modifications of the third embodiment will be described with reference to the accompanying drawings. However, the same or similar members and parts as those of the third embodiment described above are denoted by the same reference numerals, and description thereof is omitted. A configuration different from the third embodiment will be described.
The basic reinforcing structures 11 and 1m shown in FIGS. 12 and 13 are obtained by changing the number of steps of the lateral fiber sheet 3a bonded to the ground G surface of the basic reinforcing structure 1c according to the third embodiment. In the structure 1l, the transverse fiber sheet 3a is composed of two stages, one stage with the upper end aligned with the top end 2a of the fabric foundation 2 and one stage with the lower end aligned with the ground G surface, and the top end of the fabric foundation 2 with the foundation reinforcing structure 1m. It is set as 1 step | paragraph of the horizontal fiber sheet 3a which match | combined the upper end with 2a.

次に、第四の実施の形態の変形例について、添付図面に基づいて説明するが、上述の第四の実施の形態と同一又は同様な部材、部分には同一の符号を用いて説明を省略し、第四の実施の形態と異なる構成について説明する。
図14に示す基礎補強構造1nでは、第四の実施の形態による基礎補強構造1dの縦繊維シート3bがコーナー部分のみに接着されたものである。図15、16に示す基礎補強構造1o、1pでは、第四の実施の形態による基礎補強構造1dの縦繊維シート3bがコーナー部分のみに接着されて、横繊維シート3aの段数を変えたもので、基礎補強構造1nでは横繊維シート3aは布基礎2の天端2aに上端を合わせた1段と、地盤G面に下端を合わせた1段の2段とし、基礎補強構造1oでは布基礎2の天端2aに上端をあわせた縦繊維シート3aの1段としている。
Next, a modified example of the fourth embodiment will be described with reference to the accompanying drawings. However, the same or similar members and parts as those of the above-described fourth embodiment are denoted by the same reference numerals and description thereof is omitted. A configuration different from the fourth embodiment will be described.
In the basic reinforcing structure 1n shown in FIG. 14, the vertical fiber sheet 3b of the basic reinforcing structure 1d according to the fourth embodiment is bonded only to the corner portion. In the basic reinforcing structures 1o and 1p shown in FIGS. 15 and 16, the vertical fiber sheet 3b of the basic reinforcing structure 1d according to the fourth embodiment is bonded only to the corner portion, and the number of steps of the horizontal fiber sheet 3a is changed. In the foundation reinforcing structure 1n, the transverse fiber sheet 3a is composed of two stages, one stage with the upper end aligned with the top end 2a of the cloth foundation 2 and one stage with the lower end aligned with the ground G surface. The vertical fiber sheet 3a having the upper end aligned with the top end 2a is a single step.

次に、第六、七の実施の形態の変形例について、添付図面に基づいて説明するが、上述の第六及び七の実施の形態と同一又は同様な部材、部分には同一の符号を用いて説明を省略し、第六、七の実施の形態と異なる構成について説明する。
図17、18に示す基礎補強構造1q、1rでは、第六、七の実施の形態による基礎補強構造1f、1gに備えるPC板11を1段にしたものである。
このように基礎や建物の状況及び地盤などの立地条件に合わせて補強方法を選択することができる。
Next, modifications of the sixth and seventh embodiments will be described with reference to the accompanying drawings. The same reference numerals are used for members and parts that are the same as or similar to those of the sixth and seventh embodiments described above. Description is omitted, and a configuration different from the sixth and seventh embodiments will be described.
17 and 18, the base reinforcement structures 1q and 1r shown in FIGS. 17 and 18 are one-stage PC plates 11 provided in the foundation reinforcement structures 1f and 1g according to the sixth and seventh embodiments.
In this way, the reinforcement method can be selected according to the location conditions such as the foundation and building conditions and the ground.

以上、本発明による基礎補強構造の実施の形態について説明したが、本発明は上記の実施の形態に限定されるものではなく、その趣旨を逸脱しない範囲で適宜変更可能である。
例えば、上述した実施の形態では、フーチングを備える布基礎2を補強しているが、フーチングを備えない布基礎を補強してもよく、また、布基礎2に代わってべた基礎を補強してもよい。また、第一の実施の形態では、横繊維シート3aと縦繊維シート3bとは重ねて接着しているが、重ねずにそれぞれの端部をつき合わせて接着してもよい。また、上述した実施の形態では、縦繊維シート3aは布基礎2のコーナー部分や、柱5の直下の布基礎2の側面2bに接着されているが、そのほかの布基礎2の側面2bに接着されてもよい。
また、第四の実施の形態及び第四の実施の形態による変形例では、繊維シート3は構造物の外周に配設された布基礎2の外側の側面2bのみに接着されているが、補強の必要に応じて布基礎2の内側の側面2bのみに接着されてもよい。
また、第六の実施の形態及び第六の実施の形態による変形例では、PC板11はあと施工アンカーで布基礎2に固定されているが、鋼管コッター15などで固定されてもよい。
また、第七の実施の形態及び第七の実施の形態による変形例では、PC板11は鋼管コッター15で布基礎2に固定されているが、あと施工アンカーなどで固定されてもよい。
また、第七の実施の形態では、PC板11と布基礎2の側面2bとの間に繊維シート3が接着されているが、PC板11の接着面よりも広い範囲に繊維シート3を接着してもよく、PC板11の接着面よりも狭い範囲に部分的に繊維シート3を接着してもよい。
要は、本発明において所期の機能が得られればよいのである。
As mentioned above, although embodiment of the basic reinforcement structure by this invention was described, this invention is not limited to said embodiment, It can change suitably in the range which does not deviate from the meaning.
For example, in the embodiment described above, the fabric foundation 2 including the footing is reinforced, but the fabric foundation not including the footing may be reinforced, or the solid foundation may be reinforced instead of the fabric foundation 2. Good. In the first embodiment, the horizontal fiber sheet 3a and the vertical fiber sheet 3b are overlapped and bonded to each other, but may be bonded to each other without overlapping. In the embodiment described above, the vertical fiber sheet 3a is bonded to the corner portion of the fabric foundation 2 or the side surface 2b of the fabric foundation 2 directly below the pillar 5, but is bonded to the side surface 2b of the other fabric foundation 2. May be.
Further, in the fourth embodiment and the modification according to the fourth embodiment, the fiber sheet 3 is bonded only to the outer side surface 2b of the fabric base 2 disposed on the outer periphery of the structure. If necessary, it may be bonded only to the inner side surface 2b of the fabric base 2.
Further, in the sixth embodiment and the modification according to the sixth embodiment, the PC plate 11 is fixed to the fabric foundation 2 by a post-construction anchor, but may be fixed by a steel pipe cotter 15 or the like.
Moreover, in the modification by 7th Embodiment and 7th Embodiment, although the PC board 11 is being fixed to the fabric foundation 2 with the steel pipe cotter 15, you may fix with post-construction anchor etc.
Further, in the seventh embodiment, the fiber sheet 3 is bonded between the PC board 11 and the side surface 2b of the fabric base 2, but the fiber sheet 3 is bonded to a wider area than the bonding surface of the PC board 11. Alternatively, the fiber sheet 3 may be partially bonded to a range narrower than the bonding surface of the PC board 11.
In short, it is only necessary to obtain the desired function in the present invention.

(a)は本発明の第一の実施の形態による基礎補強構造の一例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。(A) is a figure which shows an example of the basic reinforcement structure by 1st embodiment of this invention, (b) is sectional drawing of the basic reinforcement structure shown to (a), (c) is the basic reinforcement shown to (a) It is a side view of a structure. (a)は本発明の第二の実施の形態による基礎補強構造の一例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。(A) is a figure which shows an example of the basic reinforcement structure by 2nd embodiment of this invention, (b) is sectional drawing of the basic reinforcement structure shown to (a), (c) is the basic reinforcement shown to (a) It is a side view of a structure. (a)は本発明の第三の実施の形態による基礎補強構造の一例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。((A) is a figure which shows an example of the basic reinforcement structure by 3rd embodiment of this invention, (b) is sectional drawing of the basic reinforcement structure shown to (a), (c) is the basic reinforcement shown to (a) It is a side view of a structure. ( (a)は本発明の第四の実施の形態による基礎補強構造の一例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。(A) is a figure which shows an example of the basic reinforcement structure by 4th embodiment of this invention, (b) is sectional drawing of the basic reinforcement structure shown to (a), (c) is the basic reinforcement shown to (a) It is a side view of a structure. (a)は本発明の第五の実施の形態による基礎補強構造の一例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。(A) is a figure which shows an example of the basic reinforcement structure by 5th embodiment of this invention, (b) is sectional drawing of the basic reinforcement structure shown to (a), (c) is the basic reinforcement shown to (a) It is a side view of a structure. (a)は本発明の第六の実施の形態による基礎補強構造の一例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。(A) is a figure which shows an example of the basic reinforcement structure by 6th embodiment of this invention, (b) is sectional drawing of the basic reinforcement structure shown to (a), (c) is the basic reinforcement shown to (a) It is a side view of a structure. (a)は本発明の第七の実施の形態による基礎補強構造の一例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図、(d)は(a)に示す基礎補強構造に備えるコッターの詳細を示す図である。(A) is a figure which shows an example of the basic reinforcement structure by 7th embodiment of this invention, (b) is sectional drawing of the basic reinforcement structure shown to (a), (c) is the basic reinforcement shown to (a) The side view of a structure, (d) is a figure which shows the detail of the cotter with which the basic reinforcement structure shown to (a) is equipped. (a)は本発明の第一の実施の形態による基礎補強構造の変形例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。(A) is a figure which shows the modification of the foundation reinforcement structure by 1st embodiment of this invention, (b) is sectional drawing of the foundation reinforcement structure shown to (a), (c) is the foundation shown to (a). It is a side view of a reinforcement structure. (a)は本発明の第一の実施の形態による基礎補強構造の他の変形例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。(A) is a figure which shows the other modification of the basic reinforcement structure by 1st embodiment of this invention, (b) is sectional drawing of the basic reinforcement structure shown to (a), (c) is (a). It is a side view of the foundation reinforcement structure shown. (a)は本発明の第一の実施の形態による基礎補強構造の更に他の変形例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。(A) is a figure which shows the further another modification of the foundation reinforcement structure by 1st embodiment of this invention, (b) is sectional drawing of the foundation reinforcement structure shown to (a), (c) is (a). It is a side view of the foundation reinforcement structure shown in FIG. (a)は本発明の第二の実施の形態による基礎補強構造の変形例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。(A) is a figure which shows the modification of the foundation reinforcement structure by 2nd embodiment of this invention, (b) is sectional drawing of the foundation reinforcement structure shown to (a), (c) is the foundation shown to (a) It is a side view of a reinforcement structure. (a)は本発明の第三の実施の形態による基礎補強構造の変形例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。(A) is a figure which shows the modification of the basic reinforcement structure by 3rd embodiment of this invention, (b) is sectional drawing of the basic reinforcement structure shown to (a), (c) is the foundation shown to (a) It is a side view of a reinforcement structure. (a)は本発明の第三の実施の形態による基礎補強構造の他の変形例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。(A) is a figure which shows the other modification of the foundation reinforcement structure by 3rd embodiment of this invention, (b) is sectional drawing of the foundation reinforcement structure shown to (a), (c) is (a). It is a side view of the foundation reinforcement structure shown. (a)は本発明の第四の実施の形態による基礎補強構造の変形例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。(A) is a figure which shows the modification of the basic reinforcement structure by 4th embodiment of this invention, (b) is sectional drawing of the basic reinforcement structure shown to (a), (c) is the foundation shown to (a) It is a side view of a reinforcement structure. (a)は本発明の第四の実施の形態による基礎補強構造の他の変形例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。(A) is a figure which shows the other modification of the foundation reinforcement structure by 4th embodiment of this invention, (b) is sectional drawing of the foundation reinforcement structure shown to (a), (c) is (a). It is a side view of the foundation reinforcement structure shown. (a)は本発明の第四の実施の形態による基礎補強構造の更に他の変形例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。(A) is a figure which shows the further another modification of the foundation reinforcement structure by 4th embodiment of this invention, (b) is sectional drawing of the foundation reinforcement structure shown to (a), (c) is (a). It is a side view of the foundation reinforcement structure shown in FIG. (a)は本発明の第六の実施の形態による基礎補強構造の変形例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。(A) is a figure which shows the modification of the basic reinforcement structure by 6th embodiment of this invention, (b) is sectional drawing of the basic reinforcement structure shown to (a), (c) is the foundation shown to (a) It is a side view of a reinforcement structure. (a)は本発明の第七の実施の形態による基礎補強構造の変形例を示す図、(b)は(a)に示す基礎補強構造の断面図、(c)は(a)に示す基礎補強構造の側面図である。(A) is a figure which shows the modification of the foundation reinforcement structure by 7th embodiment of this invention, (b) is sectional drawing of the foundation reinforcement structure shown to (a), (c) is the foundation shown to (a) It is a side view of a reinforcement structure. 地耐力30KN/m 以上の場合の基礎応力図である。It is a basic stress figure in the case of ground strength 30KN / m < 2 > or more. 地耐力20KN/m 以下で支持杭耐力の場合の基礎応力図である。It is a foundation stress diagram in the case of a bearing capacity 20KN / m 2 or less in the support piles strength.

符号の説明Explanation of symbols

1a 基礎補強構造
2 布基礎(基礎)
2a 天端
2b 側面
2d 立ち上がり部
3 繊維シート(繊維補強材)
3a 横繊維シート
3b 縦繊維シート
3c 斜め繊維シート
11 PC板
1a Foundation reinforcement structure 2 Fabric foundation (foundation)
2a Top end 2b Side surface 2d Rising part 3 Fiber sheet (fiber reinforcing material)
3a Horizontal fiber sheet 3b Vertical fiber sheet 3c Diagonal fiber sheet 11 PC board

Claims (10)

構造物の基礎のせん断や曲げ破壊を抑制し、前記基礎の耐震性を向上するための基礎補強構造であって、
前記基礎の側面に部分的に補強部材が接着されることを特徴とする基礎補強構造。
A foundation reinforcement structure for suppressing the shear and bending fracture of the foundation of the structure and improving the earthquake resistance of the foundation,
A foundation reinforcing structure, wherein a reinforcing member is partially bonded to a side surface of the foundation.
前記補強部材はシート状の繊維補強材であって、前記基礎の両側面の地盤面から前記基礎の天端の範囲内に接着されていることを特徴とする請求項1に記載の基礎補強構造。   The foundation reinforcing structure according to claim 1, wherein the reinforcing member is a sheet-like fiber reinforcing material, and is bonded within a range from a ground surface on both sides of the foundation to a top end of the foundation. . 前記補強部材はシート状の繊維補強材であって、前記構造物の外周に配設された前記基礎の外側側面の立ち上がり部から天端の範囲内に接着されていることを特徴とする請求項1に記載の基礎補強構造。   The reinforcing member is a sheet-like fiber reinforcing material, and is bonded within a range from a rising portion to a top end of an outer side surface of the foundation disposed on an outer periphery of the structure. The basic reinforcement structure according to 1. 前記補強部材はシート状の繊維補強材であって、前記基礎の片側側面の地盤面から前記基礎の天端の範囲内に接着されていることを特徴とする請求項1に記載の基礎補強構造。   The foundation reinforcing structure according to claim 1, wherein the reinforcing member is a sheet-like fiber reinforcing material, and is bonded within a range from a ground surface on one side surface of the foundation to a top end of the foundation. . 前記補強部材はシート状の繊維補強材であって、前記構造物の外周に配設された前記基礎の内側側面の地盤面から前記基礎の天端の範囲内に接着されると共に、前記基礎の外側側面の立ち上がり部から天端の範囲内に接着されていることを特徴とする請求項1に記載の基礎補強構造。   The reinforcing member is a sheet-like fiber reinforcing material, and is bonded within the range of the top surface of the foundation from the ground surface of the inner side surface of the foundation disposed on the outer periphery of the structure. The foundation reinforcing structure according to claim 1, wherein the foundation reinforcing structure is bonded within a range from the rising portion of the outer side surface to the top end. 前記繊維補強材は長尺のシート状であって、前記繊維補強材の長手方向が水平方向となる横繊維補強材と、前記繊維補強材の長手方向が鉛直方向となる縦繊維補強材とからなることを特徴とする請求項2乃至5に記載の基礎の補強構造。   The fiber reinforcing material is in the form of a long sheet, and includes a horizontal fiber reinforcing material in which the longitudinal direction of the fiber reinforcing material is a horizontal direction, and a vertical fiber reinforcing material in which the longitudinal direction of the fiber reinforcing material is a vertical direction. The foundation reinforcing structure according to any one of claims 2 to 5, wherein: 前記繊維補強材は長尺のシート状であって、前記繊維補強材の長手方向が水平方向となる横繊維補強材と、前記繊維補強材の長手方向が斜め方向となる斜め繊維補強材とからなることを特徴とする請求項2乃至5に記載の基礎補強構造。   The fiber reinforcing material is in the form of a long sheet, and includes a horizontal fiber reinforcing material in which the longitudinal direction of the fiber reinforcing material is a horizontal direction, and an oblique fiber reinforcing material in which the longitudinal direction of the fiber reinforcing material is an oblique direction. The foundation reinforcing structure according to any one of claims 2 to 5, wherein 前記補強部材はフラットバーのPC板であることを特徴とする請求項1に記載の基礎補強構造。   The foundation reinforcing structure according to claim 1, wherein the reinforcing member is a PC plate of a flat bar. 前記PC板と前記基礎の側面との間にはシート状の繊維補強材が接着されていることを特徴とする請求項8に記載の基礎補強構造。   The foundation reinforcing structure according to claim 8, wherein a sheet-like fiber reinforcing material is bonded between the PC plate and the side surface of the foundation. 前記補強部材を前記基礎側面に接着する部分は前記基礎や前記基礎が設置された地盤の状況により選択可能であることを特徴とする請求項1に記載の基礎補強構造。   The foundation reinforcing structure according to claim 1, wherein a portion where the reinforcing member is bonded to the side surface of the foundation can be selected depending on a situation of the foundation or the ground on which the foundation is installed.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012036643A (en) * 2010-08-06 2012-02-23 Hiroshima Univ Reinforcement method of continuous footing
JP2015063836A (en) * 2013-09-25 2015-04-09 株式会社竹屋化学研究所 Sheet for rising of housing foundation, application method for the same, and method of manufacturing the same

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JP2004116216A (en) * 2002-09-27 2004-04-15 Oriental Construction Co Ltd Reinforcement structure of existing floor slab by metal fiber contained high strength concrete pc board
JP2005320687A (en) * 2004-05-06 2005-11-17 Koryo Kaihatsu Kk Reinforcing structure and reinforcing material of structural member having through hole
JP2006057433A (en) * 2004-08-23 2006-03-02 J Kenchiku Syst Kk Reinforcing structure by cross-shaped fiber sheet for coping with reinforcement of structural crack and crack
JP2008050788A (en) * 2006-08-23 2008-03-06 Yahagi Construction Co Ltd Seismic strengthening structure of existing building
JP2008121239A (en) * 2006-11-10 2008-05-29 Misawa Homes Co Ltd Reinforcement structure of foundation
JP2008121236A (en) * 2006-11-10 2008-05-29 Misawa Homes Co Ltd Reinforcement structure of foundation

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11131494A (en) * 1997-10-31 1999-05-18 Toyo Shoji Kk Reinforcing structure of footing and reinforcing method
JP2004116216A (en) * 2002-09-27 2004-04-15 Oriental Construction Co Ltd Reinforcement structure of existing floor slab by metal fiber contained high strength concrete pc board
JP2005320687A (en) * 2004-05-06 2005-11-17 Koryo Kaihatsu Kk Reinforcing structure and reinforcing material of structural member having through hole
JP2006057433A (en) * 2004-08-23 2006-03-02 J Kenchiku Syst Kk Reinforcing structure by cross-shaped fiber sheet for coping with reinforcement of structural crack and crack
JP2008050788A (en) * 2006-08-23 2008-03-06 Yahagi Construction Co Ltd Seismic strengthening structure of existing building
JP2008121239A (en) * 2006-11-10 2008-05-29 Misawa Homes Co Ltd Reinforcement structure of foundation
JP2008121236A (en) * 2006-11-10 2008-05-29 Misawa Homes Co Ltd Reinforcement structure of foundation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012036643A (en) * 2010-08-06 2012-02-23 Hiroshima Univ Reinforcement method of continuous footing
JP2015063836A (en) * 2013-09-25 2015-04-09 株式会社竹屋化学研究所 Sheet for rising of housing foundation, application method for the same, and method of manufacturing the same

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