JP2008007958A - Earthquake-resistant repair method - Google Patents

Earthquake-resistant repair method Download PDF

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JP2008007958A
JP2008007958A JP2006176697A JP2006176697A JP2008007958A JP 2008007958 A JP2008007958 A JP 2008007958A JP 2006176697 A JP2006176697 A JP 2006176697A JP 2006176697 A JP2006176697 A JP 2006176697A JP 2008007958 A JP2008007958 A JP 2008007958A
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building
retaining wall
seismic
earthquake
basement
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JP2006176697A
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JP4903503B2 (en
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Takashi Nishizaki
隆氏 西崎
Takeshi Matsumoto
竹史 松本
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Takenaka Komuten Co Ltd
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Takenaka Komuten Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To hardly incur the risk of a deterioration in the usability of a building after repair, and to enable the building to be repaired at a low repair cost. <P>SOLUTION: This earthquake-resistant repair method is employed for the building A in which a dry area 4 opened on an above-ground side is provided between an basement section 1 and a retaining wall 3 surrounding the outer peripheral side of the basement section 1. In an upper section of the dry area, the retaining wall and the building are connected together by means of a seismic-force transfer member 8. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、地下階部分と、その地下階部分の外周側を囲む擁壁との間に、地上側に開放するドライエリアを設けてある建物の耐震改修方法に関する。   The present invention relates to a method for seismic retrofit of a building in which a dry area opened to the ground side is provided between a basement part and a retaining wall surrounding the outer peripheral side of the basement part.

既存建物の耐震強度を高めるための従来の耐震改修方法では、既存建物に柱や耐震壁を増設するなどの建物構造の改修が行われており、地下階部分と、その地下階部分の外周側を囲む擁壁との間にドライエリアを設けてある既存建物でも、同様の改修方法で耐震強度を高めることが行われている（周知慣用技術であり、先行技術文献情報を開示できない）。   In conventional seismic retrofitting methods to increase the seismic strength of existing buildings, the building structure has been refurbished, such as adding columns and seismic walls to the existing building, and the basement part and the outer periphery of the basement part Even in an existing building where a dry area is provided between the retaining wall and the surrounding wall, the seismic strength is improved by a similar repair method (it is a well-known technique and information on prior art cannot be disclosed).

このため、増設した柱や耐震壁の配置によっては改修後の建物の使い勝手が低下するおそれがあるとともに、建物構造の大がかりな改修工事が必要で、改修コストも高くなる欠点がある。
本発明は上記実情に鑑みてなされたものであって、改修後の建物の使い勝手が低下するおそれが少なく、しかも、安い改修コストで改修できるようにすることを目的とする。 For this reason, there is a possibility that the usability of the building after renovation may be lowered depending on the arrangement of the added pillars and the earthquake-resistant wall, and a large-scale renovation work of the building structure is required, resulting in a high renovation cost.
The present invention has been made in view of the above circumstances, and it is an object of the present invention to reduce the usability of a building after refurbishment and to allow renovation at a low renovation cost.

本発明の第１特徴構成は、地下階部分と、その地下階部分の外周側を囲む擁壁との間に、地上側に開放するドライエリアを設けてある建物の耐震改修方法であって、前記ドライエリアの上部において、前記擁壁と前記建物とを地震力伝達部材で連結する点にある。   The first characteristic configuration of the present invention is an earthquake-proof repair method for a building in which a dry area that is open to the ground side is provided between a basement part and a retaining wall that surrounds the outer peripheral side of the basement part, In the upper part of the dry area, the retaining wall and the building are connected by a seismic force transmission member.

〔作用及び効果〕
つまり、地下階部分と、その地下階部分の外周側を囲む擁壁との間にドライエリアを設けてある点に着目して、ドライエリアの上部において、擁壁と建物とを地震力伝達部材で連結するので、建物におけるドライエリアの上部高さ位置を地震力伝達部材を介して擁壁側に支持することができ、地震に伴う建物の水平方向変位を抑制できるとともに、建物高さを実質的に低くして地震による揺れ周期を短くすることができ、建物基部の剛性も高めることができる。
従って、既存建物に柱や耐震壁を増設するなどの建物構造の大がかりな改修工事を特に伴うことなく、耐震性が向上するように改修することができるので、改修後の建物の使い勝手が低下するおそれが少なく、しかも、安い改修コストで改修できる。 [Action and effect]
In other words, paying attention to the fact that a dry area is provided between the basement part and the retaining wall surrounding the outer periphery of the basement part, the retaining wall and the building are connected to the seismic force transmission member in the upper part of the dry area. As a result, the upper height position of the dry area of the building can be supported on the retaining wall side via the seismic force transmission member, and the horizontal displacement of the building due to the earthquake can be suppressed and the building height can be substantially reduced. Can be lowered to shorten the period of shaking caused by the earthquake, and the rigidity of the building base can be increased.
Therefore, it is possible to renovate the building so that the earthquake resistance is improved without particularly requiring major renovation of the building structure such as adding pillars and earthquake-resistant walls to the existing building, so the usability of the building after renovation is reduced. There is little fear, and it can be repaired at a low cost.

本発明の第２特徴構成は、前記地下階部分と、その上の地上階部分とを区画する床スラブの高さ位置と略同じ高さ位置において、前記擁壁と前記建物とを前記地震力伝達部材で連結する点にある。   According to a second characteristic configuration of the present invention, the retaining wall and the building are connected to the seismic force at a height position substantially the same as a height position of a floor slab that divides the underground floor portion and the ground floor portion above it. It is in the point which connects with a transmission member.

〔作用及び効果〕
地下階部分と、その上の地上階部分とを区画する床スラブの高さ位置と略同じ高さ位置において、擁壁と建物とを地震力伝達部材で連結するので、地震力伝達部材による支持反力を水平方向の剛性が高い床スラブに作用させて、建物の破損を効果的に抑制できる。 [Action and effect]
Since the retaining wall and the building are connected by the seismic force transmission member at the same height as the height of the floor slab that divides the basement part and the ground floor part above it, it is supported by the seismic force transmission member. The reaction force can be applied to the floor slab with high horizontal rigidity to effectively prevent the building from being damaged.

本発明の第３特徴構成は、前記擁壁を、鉄筋コンクリートの増し打ち、又は、バックアンカーで補強する点にある。   The 3rd characteristic structure of this invention exists in the point which reinforces the said retaining wall with the reinforcement of reinforced concrete or a back anchor.

〔作用及び効果〕
擁壁を、鉄筋コンクリートの増し打ち、又は、バックアンカーで補強するので、地震に伴う水平方向変位が一層小さくなるように建物を支持することができ、耐震性が一層向上するように改修できる。 [Action and effect]
Since the retaining wall is reinforced with reinforced concrete or reinforced with a back anchor, the building can be supported so that the horizontal displacement caused by the earthquake is further reduced, and the building can be renovated to further improve the earthquake resistance.

以下に本発明の実施の形態を図面に基づいて説明する。
〔第１実施形態〕
図１，図２は、地下１層の地下階部分１とその上の地上５層の地上階部分２とを備えた鉄筋コンクリート造りの耐震改修前の建物Ａを示している。 Embodiments of the present invention will be described below with reference to the drawings.
[First Embodiment]
1 and 2 show a building A before a seismic retrofitting made of reinforced concrete, which has a basement 1 of a basement layer and a basement part 2 of a five-level floor above it.

前記建物Ａの一側面側に沿って、地下階部分１の外周側を間隔を隔てて囲む鉄筋コンクリート製擁壁３を、地面Ｇと略同じ高さ位置に亘って構築して、地下階部分１と擁壁３との間に地上側に開放するドライエリア４を設けてあり、擁壁３は、屋外コンクリートスラブ５を介して、地下階部分１の鉄筋コンクリート製地下階床スラブ６と一体に構築してある。   A reinforced concrete retaining wall 3 that surrounds the outer peripheral side of the basement floor 1 with a space along the one side of the building A is constructed over substantially the same height as the ground G, and the basement floor 1 A dry area 4 that opens to the ground side is provided between the reinforced concrete basement slab 6 and the reinforced concrete basement floor slab 6 of the basement part 1 through the outdoor concrete slab 5. It is.

前記建物Ａの本発明による耐震改修方法を説明すると、図３，図４に示すように、ドライエリア４の上部、つまり、地下階部分１と地上階部分２とを区画する鉄筋コンクリート製一階床スラブ７の高さ位置と略同じ高さ位置において、擁壁３と建物Ａとを地震力伝達部材８で連結するとともに、擁壁３を、鉄筋コンクリートの増し打ち、又は、バックアンカーで補強して、耐震強度を高めてある。   The seismic retrofit method for the building A according to the present invention will be described. As shown in FIGS. 3 and 4, the upper part of the dry area 4, that is, the first floor made of reinforced concrete dividing the basement part 1 and the ground part 2. At the same height as the slab 7, the retaining wall 3 and the building A are connected by the seismic force transmission member 8 and the retaining wall 3 is reinforced with reinforced concrete or reinforced with a back anchor. The seismic strength has been increased.

前記地震力伝達部材８は、一階床スラブ７を支持している柱部材９や梁部材１０の位置に合わせて、略水平方向に沿わせて配置した複数の鉄骨ブレースで構成してあり、一階床スラブ７の高さ位置と略同じ高さ位置において建物Ａ側に固定したアンカー部材（図外）と、擁壁３の地面近くの上部に固定したアンカー部材（図外）とで、建物Ａと擁壁３とに連結してある。   The seismic force transmission member 8 is constituted by a plurality of steel braces arranged along a substantially horizontal direction in accordance with the positions of the column member 9 and the beam member 10 supporting the first floor slab 7. An anchor member (not shown) fixed to the building A side at a height position substantially the same as the height position of the first floor slab 7, and an anchor member (not shown) fixed to the upper part of the retaining wall 3 near the ground, It is connected to building A and retaining wall 3.

〔第２実施形態〕
図５は、本発明による耐震改修方法の別実施形態を示し、地震力伝達部材８を、建物Ａにおける一階床スラブ７の高さ位置と略同じ高さ位置と、擁壁３の地面近くの上部とに亘って、ドライエリア４の略全面を覆う状態で、略水平に一体に構築したコンクリートスラブで構成してある。
その他の構成は第１実施形態と同様である。 [Second Embodiment]
FIG. 5 shows another embodiment of the seismic retrofit method according to the present invention, in which the seismic force transmission member 8 is placed at a height position substantially the same as the height position of the first floor slab 7 in the building A and near the ground of the retaining wall 3. And a concrete slab constructed integrally in a substantially horizontal manner so as to cover substantially the entire surface of the dry area 4.
Other configurations are the same as those of the first embodiment.

〔その他の実施形態〕
１．本発明による耐震改修方法は、地下階部分と地上階部分とを区画する床スラブよりも低い高さ位置又は高い高さ位置において、擁壁と建物とを地震力伝達部材で連結しても良い。
２．本発明による耐震改修方法は、建物と擁壁とを連結する地震力伝達部材を、地下階部分と地上階部分とを区画する床スラブよりも低い高さ位置又は高い高さ位置において、地下階部分又は地上階部分を構成している複数の柱部材に亘って一体に構築したコンクリートスラブで構成しても良い。
３．本発明による耐震改修方法は、地震力伝達部材を構成するコンクリートスラブを、水平方向に沿って断続的に設けても良い。
４．本発明による耐震改修方法は、全周に亘ってドライエリアを設けてある建物に使用しても良い。 [Other Embodiments]
1. In the seismic retrofit method according to the present invention, the retaining wall and the building may be connected by a seismic force transmission member at a lower height position or a higher height position than the floor slab that divides the underground floor portion and the ground floor portion. .
2. The seismic retrofit method according to the present invention provides a seismic force transmission member that connects a building and a retaining wall at a lower or higher height than a floor slab that divides the underground floor portion and the ground floor portion. You may comprise with the concrete slab constructed | assembled integrally over the some pillar member which comprises the part or the ground floor part.
3. In the seismic retrofit method according to the present invention, the concrete slab constituting the seismic force transmission member may be provided intermittently along the horizontal direction.
4). The seismic retrofit method according to the present invention may be used for a building provided with a dry area over the entire circumference.

耐震改修前の建物の縦断面図Longitudinal section of the building before earthquake-proof repair 耐震改修前の建物の要部斜視図Perspective view of the main part of the building before the earthquake-proof repair 耐震改修後の建物の縦断面図Longitudinal section of the building after earthquake-proof repair 耐震改修後の建物の要部斜視図Perspective view of the main part of the building after seismic retrofitting 第２実施形態を示す耐震改修後の建物の要部斜視図The principal part perspective view of the building after earthquake-proof repair which shows 2nd Embodiment

符号の説明Explanation of symbols

１ 地下階部分
３ 擁壁
４ ドライエリア
７ 床スラブ
８ 地震力伝達部材
Ａ 建物 1 Basement part 3 Retaining wall 4 Dry area 7 Floor slab 8 Seismic force transmission member A Building

Claims (3)

地下階部分と、その地下階部分の外周側を囲む擁壁との間に、地上側に開放するドライエリアを設けてある建物の耐震改修方法であって、
前記ドライエリアの上部において、前記擁壁と前記建物とを地震力伝達部材で連結する耐震改修方法。 An earthquake-proof repair method for a building having a dry area open to the ground side between the basement part and the retaining wall surrounding the outer periphery of the basement part,
A seismic retrofit method for connecting the retaining wall and the building with a seismic force transmission member at an upper portion of the dry area. 前記地下階部分と、その上の地上階部分とを区画する床スラブの高さ位置と略同じ高さ位置において、前記擁壁と前記建物とを前記地震力伝達部材で連結する請求項１記載の耐震改修方法。   The said retaining wall and the said building are connected with the said seismic force transmission member in the height position substantially the same as the height position of the floor slab which divides the said underground floor part and the ground floor part on it. Seismic retrofit method. 前記擁壁を、鉄筋コンクリートの増し打ち、又は、バックアンカーで補強する請求項１又は２記載の耐震改修方法。   The seismic retrofit method according to claim 1 or 2, wherein the retaining wall is reinforced with reinforced concrete or reinforced with a back anchor.
JP2006176697A 2006-06-27 2006-06-27 Seismic retrofit method Expired - Fee Related JP4903503B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102758454A (en) * 2012-07-24 2012-10-31 华东建筑设计研究院有限公司 Structure capable of transmitting horizontal force between neighboring independent basements

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09165760A (en) * 1995-12-15 1997-06-24 Hideki Kanda Earth pressure-resistant structure of underground construction with opening
JPH09177098A (en) * 1995-12-27 1997-07-08 Ryuji Takase Steel-made basement
JPH1046607A (en) * 1996-07-31 1998-02-17 Sekisui Chem Co Ltd Basement structure
JPH11152928A (en) * 1997-11-20 1999-06-08 Shimizu Corp Base isolation building and method of base isolating construction of existing building
JP2002047657A (en) * 2000-08-03 2002-02-15 Toyo Constr Co Ltd Slope retention type building and its construction method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09165760A (en) * 1995-12-15 1997-06-24 Hideki Kanda Earth pressure-resistant structure of underground construction with opening
JPH09177098A (en) * 1995-12-27 1997-07-08 Ryuji Takase Steel-made basement
JPH1046607A (en) * 1996-07-31 1998-02-17 Sekisui Chem Co Ltd Basement structure
JPH11152928A (en) * 1997-11-20 1999-06-08 Shimizu Corp Base isolation building and method of base isolating construction of existing building
JP2002047657A (en) * 2000-08-03 2002-02-15 Toyo Constr Co Ltd Slope retention type building and its construction method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102758454A (en) * 2012-07-24 2012-10-31 华东建筑设计研究院有限公司 Structure capable of transmitting horizontal force between neighboring independent basements

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