JP2020190149A - Collapse prevention structure - Google Patents

Collapse prevention structure Download PDF

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JP2020190149A
JP2020190149A JP2019096692A JP2019096692A JP2020190149A JP 2020190149 A JP2020190149 A JP 2020190149A JP 2019096692 A JP2019096692 A JP 2019096692A JP 2019096692 A JP2019096692 A JP 2019096692A JP 2020190149 A JP2020190149 A JP 2020190149A
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pedestal
box
prevention structure
collapse
columnar body
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JP7280603B2 (en
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雄一 真崎
Yuichi Mazaki
雄一 真崎
細川　洋治
Yoji Hosokawa
洋治 細川
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RMA KK
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Abstract

To provide a collapse prevention structure of a building which suppresses sharp stage collapse and secures a survival space in stage collapse.SOLUTION: A collapse prevention structure has a pedestal, a plurality of box-like bodies that are arranged side by side and layered on the upper part of the pedestal, and a supporting plate arranged between the box-like body on the lowermost stage and the pedestal, in which the box-like body has a hollow cube whose front surface and back surface are opened, the pedestal is configured so that a plurality of pedestal pipes composed of steel pipes are aligned and erected, and contact surfaces of the adjacent box-like bodies are integrally connected to each other.SELECTED DRAWING: Figure 1

Description

本発明は、建物の倒壊防止構造に関するものである。 The present invention relates to a collapse prevention structure of a building.

従来、建物の倒壊を防止する構造としては、建物の基礎部と梁の間に箱状体を積層する構造が知られている。
この構造は、建物の柱が破損した時に積層した箱状体により柱の軸力を引き受けるものであり、積層した箱状体が各層毎に順番に変形することにより、急激な階崩壊を防止する。 Conventionally, as a structure for preventing the collapse of a building, a structure in which a box-shaped body is laminated between a foundation portion of the building and a beam is known.
This structure takes on the axial force of the columns by the stacked box-shaped bodies when the columns of the building are damaged, and the stacked box-shaped bodies are deformed in order for each layer to prevent sudden floor collapse. ..

特開２０１３−１２２１５９号公報Japanese Unexamined Patent Publication No. 2013-122159

近年、地震による被害が多発しているが、建物の階が崩壊したときに垂れ壁や腰壁により生存空間が確保され、建物内部にいた人が助かった例があった。
従来の建物の倒壊防止構造は、急激な階崩壊を防止することで全倒壊を防ぐものであるが、例えば建物の上層の急激な崩壊等により荷重が過大となり、全ての箱状体が変形してしまう場合には、最終的に生存空間が確保されないおそれがある。 In recent years, there have been many damages caused by earthquakes, but when the floors of the building collapsed, the hanging walls and waist walls secured a living space, and there were cases where people inside the building were saved.
The conventional collapse prevention structure of a building prevents total collapse by preventing sudden collapse of the floor, but for example, the load becomes excessive due to sudden collapse of the upper layer of the building, and all the box-shaped bodies are deformed. If this happens, there is a risk that the living space will not be secured in the end.

本発明は、急激な階崩壊を抑制するとともに、階崩壊時に生存空間を確保する、建物の倒壊防止構造（倒壊防止構造体）を提供することを目的とする。 An object of the present invention is to provide a collapse prevention structure (collapse prevention structure) of a building that suppresses a sudden floor collapse and secures a living space at the time of the floor collapse.

上記目的を達成するためになされた本願発明の倒壊防止構造は、台座と、前記台座の上部に並列および積層する複数の箱状体と、最下段の前記箱状体と前記台座との間に配置する支持板と、を有し、前記箱状体は、前面と背面を開口した中空の立方体であり、前記台座は、鋼管からなる台座管を複数本並べて起立して構成し、隣接する前記箱状体どうしは接する面を一体に連結することを特徴とする。
また、前記台座管の内部には、前記台座管よりもヤング係数の低い材料を充填して硬化した柱状体を有し、前記支持板の下面には、前記台座管に挿入可能な支持足と突設し、前記柱状体の上面は、前記台座管の上端よりも所定の高さだけ下げた位置にあり、前記支持足の長さは、前記柱状体の上面から前記台座管の上端までの高さよりも長いことを特徴とする。 The collapse prevention structure of the present invention made to achieve the above object is a pedestal, a plurality of box-shaped bodies parallel and laminated on the upper portion of the pedestal, and between the box-shaped body and the pedestal at the bottom. The box-shaped body has a support plate to be arranged, and the box-shaped body is a hollow cube having front and back openings, and the pedestal is formed by arranging a plurality of pedestal pipes made of steel pipes side by side and standing adjacent to each other. The box-shaped bodies are characterized in that the surfaces in contact with each other are integrally connected.
Further, the inside of the pedestal tube has a columnar body filled with a material having a Younger coefficient lower than that of the pedestal tube and hardened, and the lower surface of the support plate has support legs that can be inserted into the pedestal tube. The upper surface of the columnar body is projected and is located at a position lowered by a predetermined height from the upper end of the pedestal tube, and the length of the support foot is from the upper surface of the columnar body to the upper end of the pedestal tube. It is characterized by being longer than the height.

本発明は、上記した課題を解決するための手段により、次のような効果の少なくとも一つを得ることができる。
（１）積層した箱状体が各層ごとに順番に変形するため、急激な階崩壊を抑制する。
（２）台座管を介した圧縮力の作用した柱状体は、台座管により周方向を拘束されるため、コンファインド効果が発揮され、柱状体の耐力や靭性が向上する。
（３）支持足を介して柱状体に荷重が作用すると、柱状体が圧縮変形するため、支持板に作用した衝撃力を吸収し、台座管に過大な衝撃力が作用するのを抑制する。
（４）台座は鋼管からなるため、建物の重量や階崩壊による荷重を受けても変形せず、階崩壊時に生存空間が確保される。 According to the present invention, at least one of the following effects can be obtained by means for solving the above-mentioned problems.
(1) Since the stacked box-shaped bodies are deformed in order for each layer, sudden floor collapse is suppressed.
(2) Since the columnar body on which the compressive force acts via the pedestal tube is constrained in the circumferential direction by the pedestal tube, the confined effect is exhibited and the proof stress and toughness of the columnar body are improved.
(3) When a load acts on the columnar body through the support foot, the columnar body is compressed and deformed, so that the impact force acting on the support plate is absorbed and an excessive impact force is suppressed from acting on the pedestal tube.
(4) Since the pedestal is made of steel pipe, it does not deform even when it receives the weight of the building or the load due to the collapse of the floor, and a living space is secured when the floor collapses.

本発明の倒壊防止構造の斜視図Perspective view of the collapse prevention structure of the present invention 箱状体の斜視図Perspective view of the box 支持板の斜視図（１）Perspective view of the support plate (1) 支持板の斜視図（２）Perspective view of the support plate (2) 本発明の倒壊防止構造の配置状態の説明図Explanatory drawing of arrangement state of collapse prevention structure of this invention 箱状体の変形の説明図（１）Explanatory drawing of deformation of box-shaped body (1) 箱状体の変形の説明図（２）Explanatory drawing of deformation of box-shaped body (2) 柱状体の変形の説明図Explanatory drawing of deformation of columnar body 台座により生存空間が確保された状態の説明図Explanatory drawing of the state where the living space is secured by the pedestal その他の実施例にかかる台座の説明図Explanatory drawing of the pedestal according to other examples

以下、図面を参照しながら本発明の倒壊防止構造を詳細に説明する。 Hereinafter, the collapse prevention structure of the present invention will be described in detail with reference to the drawings.

［実施例１］
（１）倒壊防止構造
本発明の倒壊防止構造は、複数の箱状体１を台座２の上部に並列および積層して構成するものである（図１）。
中空の台座２の内部には柱状体３を配置する。
また、最下段の箱状体１の下部には支持板４を配置し、支持板４の下面には支持足５を突設する。 [Example 1]
(1) Collapse Prevention Structure The collapse prevention structure of the present invention is configured by arranging and laminating a plurality of box-shaped bodies 1 on the upper part of a pedestal 2 (FIG. 1).
A columnar body 3 is arranged inside the hollow pedestal 2.
Further, a support plate 4 is arranged below the box-shaped body 1 at the lowermost stage, and support legs 5 are projected from the lower surface of the support plate 4.

（２）箱状体
箱状体１は、前面と背面を開口した中空の立方体であり、鋼板により構成する（図２）。
箱状体１は、各面のそれぞれ対応する位置にボルト挿通孔１１を設ける。
箱状体１は、並列および積層し、接する面のボルト挿通孔１１にボルト及びナットにより構成する連結材１２のボルトを挿通し、ナットを螺合して連結する。 (2) Box-shaped body The box-shaped body 1 is a hollow cube having front and back openings, and is made of a steel plate (FIG. 2).
The box-shaped body 1 is provided with bolt insertion holes 11 at corresponding positions on each surface.
The box-shaped body 1 is connected in parallel and laminated, and a bolt of a connecting member 12 composed of a bolt and a nut is inserted into a bolt insertion hole 11 on a contact surface, and the nut is screwed to connect.

（３）台座
台座２は、鋼管からなる台座管２１を複数本並べて起立したものである。
台座管２１の内部には、柱状体３を充填する。
柱状体３は、発泡コンクリート等の、台座管２１よりもヤング係数の低い材料を台座管２１の内部に充填して硬化したものである。 (3) Pedestal The pedestal 2 is formed by arranging a plurality of pedestal pipes 21 made of steel pipes and standing upright.
The inside of the pedestal pipe 21 is filled with the columnar body 3.
The columnar body 3 is formed by filling the inside of the pedestal pipe 21 with a material having a Younger coefficient lower than that of the pedestal pipe 21, such as foamed concrete, and hardening the columnar body 3.

（４）支持板
支持板４は、箱状体１と台座２との間に配置する板状体である。
支持板４は、上面に連結ボルト４１を突設する（図３）。
連結ボルト４１は、箱状体１のボルト挿通孔１１に対応した位置に突設し、ボルト挿通孔１１に挿通してナット４２を締め付けて、支持板４の上面に箱状体１を固定する。
支持板４の下部に突設する支持足５は、台座管２１に挿入可能な断面形状とし、台座管２１の上端から内部に挿入する。
台座管２１の内部に充填する柱状体３は、台座管２１の上端まで充填せず、所定の高さだけ下げた位置を上面とする。そして、柱状体３の上面により支持足５の下端を支持する。
支持足５の長さは、柱状体３の上面から台座管２１の上端までの高さよりも長くする。
このように構成することにより、柱状体３により支持足５を支持している状態のとき、支持板４と台座管２１とは接しない。
支持板４は、１枚の板状体を並列する複数の台座管２１の上端に亘って配置してもよいし（図３）、１本の台座管２１及び支持足５毎に１枚の板状体を配置してもよい（図４）。このとき、１枚の支持板４は、台座管２１の内径よりも大きくする。 (4) Support plate The support plate 4 is a plate-shaped body arranged between the box-shaped body 1 and the pedestal 2.
A connecting bolt 41 is projected from the upper surface of the support plate 4 (FIG. 3).
The connecting bolt 41 is projected at a position corresponding to the bolt insertion hole 11 of the box-shaped body 1, inserted into the bolt insertion hole 11 and tightened with the nut 42, and the box-shaped body 1 is fixed to the upper surface of the support plate 4. ..
The support foot 5 projecting from the lower portion of the support plate 4 has a cross-sectional shape that can be inserted into the pedestal pipe 21, and is inserted into the inside from the upper end of the pedestal pipe 21.
The columnar body 3 to be filled inside the pedestal pipe 21 is not filled to the upper end of the pedestal pipe 21, and the upper surface is a position lowered by a predetermined height. Then, the upper surface of the columnar body 3 supports the lower end of the support foot 5.
The length of the support foot 5 is longer than the height from the upper surface of the columnar body 3 to the upper end of the pedestal tube 21.
With this configuration, the support plate 4 and the pedestal pipe 21 do not come into contact with each other when the support foot 5 is supported by the columnar body 3.
The support plate 4 may be arranged over the upper ends of a plurality of pedestal tubes 21 in which one plate-shaped body is arranged in parallel (FIG. 3), or one for each pedestal tube 21 and support legs 5. A plate-shaped body may be arranged (Fig. 4). At this time, one support plate 4 is made larger than the inner diameter of the pedestal pipe 21.

（５）倒壊防止構造の配置
本発明の倒壊防止構造は、柱６の近傍であって梁７と基礎部８との間に配置する（図５）。
台座２の下端は基礎部８に固定するが、箱状体１の上端と梁７は連結しない。このように構成することにより、梁７と基礎部８が相対的にずれた場合でも、倒壊防止構造にせん断力が作用せず、せん断力による変形が生じない。 (5) Arrangement of Collapse Prevention Structure The collapse prevention structure of the present invention is arranged in the vicinity of the pillar 6 and between the beam 7 and the foundation portion 8 (FIG. 5).
The lower end of the pedestal 2 is fixed to the base portion 8, but the upper end of the box-shaped body 1 and the beam 7 are not connected. With this configuration, even if the beam 7 and the foundation portion 8 are relatively displaced, no shearing force acts on the collapse prevention structure, and deformation due to the shearing force does not occur.

（６）倒壊防止構造の作用
（６．１）箱状体の作用
柱６崩壊時、本発明の倒壊防止構造は柱６の代わりに軸力を支持する。倒壊防止構造はせん断力による変形が生じないため、軸力支持の効果が常に発揮される。
そして、受ける軸力が大きくなると、積層した箱状体１が層ごとに変形し、衝撃を吸収する（図６、図７）。
積層した箱状体１は、階崩壊に至る段階で各層ごとに順番に変形するため、急激な階崩壊を抑制する。 (6) Action of collapse prevention structure (6.1) Action of box-shaped body When the pillar 6 collapses, the collapse prevention structure of the present invention supports the axial force instead of the pillar 6. Since the collapse prevention structure does not deform due to shearing force, the effect of supporting axial force is always exhibited.
Then, when the axial force received increases, the stacked box-shaped bodies 1 are deformed layer by layer to absorb the impact (FIGS. 6 and 7).
Since the stacked box-shaped bodies 1 are deformed in order for each layer at the stage leading to the floor collapse, sudden floor collapse is suppressed.

（６．２）柱状体の作用
本発明の倒壊防止構造は、柱状体３の上面により支持足５の下端を支持するため、箱状体１から支持板４にかかる荷重は、支持足５を介して柱状体３に作用する（図８（ａ））。
支持足５は台座管２１の内部に収まっており、支持板４と台座管２１は接していないため、支持板４に作用した衝撃力は台座管２１には直接伝達されず、支持足５から柱状体３を介して、台座管２１に側圧により伝達されるので、台座管２１は座屈を生じない。
柱状体３は、台座管２１の中に充填されているので、衝撃力による圧縮力が作用し続けても裸の発泡コンクリートのように崩壊することなく、歪みを保ちながら形状を維持する。また、圧縮力の作用した柱状体３は台座管２１により周方向を拘束されるため、コンファインド効果が発揮され、柱状体３の耐力や靭性が向上する。 (6.2) Action of columnar body Since the collapse prevention structure of the present invention supports the lower end of the support foot 5 by the upper surface of the columnar body 3, the load applied from the box-shaped body 1 to the support plate 4 is the support foot 5. It acts on the columnar body 3 through the column 3 (FIG. 8 (a)).
Since the support foot 5 is housed inside the pedestal pipe 21 and the support plate 4 and the pedestal pipe 21 are not in contact with each other, the impact force acting on the support plate 4 is not directly transmitted to the pedestal pipe 21 and is not directly transmitted from the support foot 5. Since the lateral pressure is transmitted to the pedestal pipe 21 via the columnar body 3, the pedestal pipe 21 does not buckle.
Since the columnar body 3 is filled in the pedestal pipe 21, the columnar body 3 does not collapse like bare foam concrete even if the compressive force due to the impact force continues to act, and maintains the shape while maintaining the strain. Further, since the columnar body 3 on which the compressive force acts is constrained in the circumferential direction by the pedestal tube 21, the confined effect is exhibited, and the proof stress and toughness of the columnar body 3 are improved.

また、柱状体３はヤング係数が低いため、荷重が大きくなると圧縮変形する（図８（ｂ））。
柱状体３は台座管２１の上端から所定の高さだけ下げた位置が上面となる。また、支持足５の長さは柱状体３の上面から台座管２１の上端までの高さよりも長いため、支持板４の下面と台座管２１の上端との間は所定の距離離れている。このため、支持足５を介して柱状体３に荷重が作用すると、この距離だけ、柱状体３が圧縮変形する。
柱状体３が圧縮変形するため、支持板４に作用した衝撃力を吸収し、台座管２１に過大な衝撃力が作用するのを抑制する。
そして、柱状体３が圧縮変形して支持板４の下部が台座管２１の上端に当接すると、支持板４に作用する荷重は、台座管２１により支持される。 Further, since the columnar body 3 has a low Young's modulus, it is compressively deformed when the load is large (FIG. 8 (b)).
The upper surface of the columnar body 3 is a position lowered by a predetermined height from the upper end of the pedestal pipe 21. Further, since the length of the support foot 5 is longer than the height from the upper surface of the columnar body 3 to the upper end of the pedestal pipe 21, the lower surface of the support plate 4 and the upper end of the pedestal pipe 21 are separated by a predetermined distance. Therefore, when a load acts on the columnar body 3 via the support foot 5, the columnar body 3 is compressed and deformed by this distance.
Since the columnar body 3 is compressed and deformed, the impact force acting on the support plate 4 is absorbed, and an excessive impact force is suppressed from acting on the pedestal tube 21.
Then, when the columnar body 3 is compressed and deformed and the lower portion of the support plate 4 comes into contact with the upper end of the pedestal pipe 21, the load acting on the support plate 4 is supported by the pedestal pipe 21.

（６．３）台座の作用
階崩壊時、箱状体１により急激な階崩壊が抑制されるため、台座２には過大な荷重は作用しない。
そして、台座２は鋼管からなるため、建物の重量や階崩壊による荷重を受けても変形せず、階崩壊時に生存空間Ｓが確保される（図９）。 (6.3) Action of the pedestal When the floor collapses, the box-shaped body 1 suppresses the sudden collapse of the floor, so that an excessive load does not act on the pedestal 2.
Since the pedestal 2 is made of a steel pipe, it does not deform even when it receives the weight of the building or the load due to the floor collapse, and the living space S is secured when the floor collapses (FIG. 9).

［その他の実施例］
（１）台座の構造
実施例１における台座２は、台座管２１を隣接して配置し、内部に柱状体３を充填したが、建物が低層な場合などで想定される荷重が小さい場合には、台座管２１を所定の間隔を空けて配置してもよいし（図１０（ａ））、内部に柱状体３を充填せず、台座管２１により直接支持板４を支持してもよい（図１０（ｂ））。このとき、支持板４は、支持足５を突設しない構成としてもよい。 [Other Examples]
(1) Structure of pedestal In the pedestal 2 in the first embodiment, the pedestal pipe 21 is arranged adjacent to each other and the columnar body 3 is filled inside, but when the load assumed is small due to a low-rise building or the like. , The pedestal pipes 21 may be arranged at predetermined intervals (FIG. 10A), or the support plate 4 may be directly supported by the pedestal pipes 21 without filling the columnar body 3 inside (FIG. 10A). FIG. 10 (b). At this time, the support plate 4 may be configured so that the support legs 5 do not project.

１ 箱状体
１１ ボルト挿通孔
１２ 連結材
２ 台座
２１ 台座管
３ 柱状体
４ 支持板
４１ 連結ボルト
４２ ナット
５ 支持足
６ 柱
７ 梁
８ 基礎部 1 Box-shaped body 11 Bolt insertion hole 12 Connecting material 2 Pedestal 21 Pedestal pipe 3 Column body 4 Support plate 41 Connecting bolt 42 Nut 5 Support foot 6 Pillar 7 Beam 8 Foundation

Claims (2)

台座と、
前記台座の上部に並列および積層する複数の箱状体と、
最下段の前記箱状体と前記台座との間に配置する支持板と、を有し、
前記箱状体は、前面と背面を開口した中空の立方体であり、
前記台座は、鋼管からなる台座管を複数本並べて起立して構成し、
隣接する前記箱状体どうしは接する面を一体に連結することを特徴とする、
倒壊防止構造。 With the pedestal
A plurality of box-shaped bodies parallel and laminated on the upper part of the pedestal,
It has a support plate arranged between the box-shaped body at the bottom and the pedestal.
The box-shaped body is a hollow cube with front and back openings.
The pedestal is constructed by arranging a plurality of pedestal pipes made of steel pipes side by side and standing upright.
Adjacent box-shaped bodies are characterized in that the surfaces in contact with each other are integrally connected.
Collapse prevention structure. 請求項１に記載の倒壊防止構造において、
前記台座管の内部には、前記台座管よりもヤング係数の低い材料を充填して硬化した柱状体を有し、
前記支持板の下面には、前記台座管に挿入可能な支持足と突設し、
前記柱状体の上面は、前記台座管の上端よりも所定の高さだけ下げた位置にあり、
前記支持足の長さは、前記柱状体の上面から前記台座管の上端までの高さよりも長いことを特徴とする、
倒壊防止構造。 In the collapse prevention structure according to claim 1,
The inside of the pedestal tube has a columnar body filled with a material having a Younger coefficient lower than that of the pedestal tube and hardened.
On the lower surface of the support plate, a support foot that can be inserted into the pedestal pipe is provided so as to project.
The upper surface of the columnar body is located at a position lowered by a predetermined height from the upper end of the pedestal tube.
The length of the support foot is longer than the height from the upper surface of the columnar body to the upper end of the pedestal tube.
Collapse prevention structure.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10176434A (en) * 1996-12-18 1998-06-30 Shimizu Corp Vibration control building frame structure
JP2002295032A (en) * 2001-03-27 2002-10-09 Shimizu Corp Multiple dwelling house building
JP2009052395A (en) * 2008-07-23 2009-03-12 Fujika:Kk Construction method for preventing house collapse
JP2016037845A (en) * 2014-08-07 2016-03-22 株式会社グレイプ Reinforcement structure and building

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10176434A (en) * 1996-12-18 1998-06-30 Shimizu Corp Vibration control building frame structure
JP2002295032A (en) * 2001-03-27 2002-10-09 Shimizu Corp Multiple dwelling house building
JP2009052395A (en) * 2008-07-23 2009-03-12 Fujika:Kk Construction method for preventing house collapse
JP2016037845A (en) * 2014-08-07 2016-03-22 株式会社グレイプ Reinforcement structure and building

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