JP6893818B2 - How to renovate the building - Google Patents

How to renovate the building Download PDF

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JP6893818B2
JP6893818B2 JP2017075208A JP2017075208A JP6893818B2 JP 6893818 B2 JP6893818 B2 JP 6893818B2 JP 2017075208 A JP2017075208 A JP 2017075208A JP 2017075208 A JP2017075208 A JP 2017075208A JP 6893818 B2 JP6893818 B2 JP 6893818B2
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existing
building
new
rampway
floor structure
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JP2018178410A (en
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一高 小島
一高 小島
裕和 野澤
裕和 野澤
西崎　隆氏
隆氏 西崎
井上　崇
崇 井上
邦裕 藤田
邦裕 藤田
佳久 本田
佳久 本田
真司 板谷
真司 板谷
智憲 吉田
智憲 吉田
哲也 三浦
哲也 三浦
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Takenaka Corp
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Description

本発明は、既存建物の外周部に新設床構造部を増設する建物の改修方法に関する。 The present invention relates to a method for repairing a building in which a new floor structure portion is added to the outer peripheral portion of an existing building.

新規に建物を新設する際に、その新設建物の外周部に新設床構造部の一例であるランプウェイ構造部を構築するような場合、新設建物とランプウェイ構造部が平面視において互いに重複しないように配置されることがある（例えば、特許文献１及び２参照）。
そして、例えば、既存建物の上層階に車が出入りするためのスペースを新設するような改修を行って、その既存建物の各階へ車が出入りするためのランプウェイ構造部を既存建物の外周部に増設するような場合には、上記新規建物と同様に、既存建物と新設ランプウェイ構造部が平面視において互いに重複しないように配置されるのが一般的である。 When constructing a new building, if a rampway structure, which is an example of the new floor structure, is constructed on the outer periphery of the new building, the new building and the rampway structure should not overlap each other in a plan view. (See, for example, Patent Documents 1 and 2).
Then, for example, a renovation is carried out such that a space for cars to enter and exit is newly installed on the upper floors of the existing building, and a rampway structure for cars to enter and exit to each floor of the existing building is provided on the outer periphery of the existing building. In the case of expansion, it is common that the existing building and the new rampway structure are arranged so as not to overlap each other in a plan view, as in the case of the new building.

特許第５８８６９９６号公報Japanese Patent No. 5886996 特開平１１−３０３４４２号公報Japanese Unexamined Patent Publication No. 11-303442

しかし、既存建物の外周部に新設床構造部の一例であるランプウェイ構造部を増設するような場合、例えば、敷地面積の関係や既存建物の立地条件などによって、既存建物の外周部にその既存建物と平面視で重複しないようにランプウェイ構造部を増設だけのスペースを確保することができない場合もある。 However, when adding a rampway structure, which is an example of a new floor structure, to the outer periphery of an existing building, for example, depending on the site area and the location conditions of the existing building, the existing one may be added to the outer periphery of the existing building. In some cases, it may not be possible to secure enough space to expand the rampway structure so that it does not overlap with the building in plan view.

本発明の目的は、たとえ既存建物の外周部に新設床構造部を増設するに十分なスペースが確保できない場合であっても、新設床構造部の増設を比較的安価なコストで可能にする建物の改修方法を提供することにある。 An object of the present invention is a building that enables the expansion of a new floor structure at a relatively low cost even when sufficient space cannot be secured for the expansion of the new floor structure on the outer periphery of the existing building. Is to provide a repair method for.

本発明の第１特徴構成は、既存建物の外周部に新設床構造部を増設する建物の改修方法であって、前記新設床構造部の一部が、平面視において前記既存建物の内部に入り込む状態に配置され、その既存建物への入り込み床構造部の支持構造として前記既存建物の躯体を使用し、前記既存建物が、複数階建ての建物であり、前記新設床構造部が、前記既存建物の下層階から上層階に亘るランプウェイを有するランプウェイ構造部である点にある。 The first characteristic configuration of the present invention is a method of repairing a building in which a new floor structure portion is added to the outer peripheral portion of the existing building, and a part of the new floor structure portion enters the inside of the existing building in a plan view. The existing building is arranged in a state, and the skeleton of the existing building is used as a support structure for the floor structure portion that enters the existing building. The existing building is a multi-story building, and the new floor structure portion is the existing building. The point is that it is a rampway structure having a rampway extending from the lower floor to the upper floor.

本構成によれば、既存建物の外周部に増設する新設床構造部の一部が、平面視において既存建物の内部に入り込む状態に配置されるので、既存建物の内部に入り込む分だけ新設床構造部の増設に要するスペースを減少させることができる。
そして、その既存建物への入り込み床構造部の支持構造として既存建物の躯体を使用するので、入り込み床構造部の支持構造の一部を既存建物の躯体で代用することができ、新設床構造部の増設費用を比較的低いコストに抑えることが可能となる。
その結果、たとえ既存建物の外周部に新設床構造部を増設するに十分なスペースが確保できない場合であっても、新設床構造部を比較的安価なコストで増設することが可能となる。 According to this configuration, a part of the new floor structure to be added to the outer periphery of the existing building is arranged so as to enter the inside of the existing building in a plan view. The space required for the expansion of the unit can be reduced.
Then, since the skeleton of the existing building is used as the support structure of the entrance floor structure portion to the existing building, a part of the support structure of the entry floor structure portion can be replaced with the skeleton of the existing building. It is possible to keep the expansion cost of the above to a relatively low cost.
As a result, even if sufficient space cannot be secured for adding the new floor structure to the outer periphery of the existing building, the new floor structure can be added at a relatively low cost.

更に、本構成によれば、既存建物が、複数階建ての建物であり、かつ、新設床構造部が、既存建物の下層階から上層階に亘るランプウェイを有するランプウェイ構造部であるから、既存建物の下層階と上層階の間を車で自由に行き来することができる。
したがって、既存建物の上層階に車が出入りするためのスペースを新設するような特殊
な改修も可能となる。 Further, according to this configuration, the existing building is a multi-story building, and the new floor structure part is a rampway structure part having a rampway extending from the lower floor to the upper floor of the existing building. You can drive freely between the lower and upper floors of the existing building.
Therefore, it is possible to make a special renovation such as creating a new space for cars to enter and exit the upper floors of the existing building.

本発明の第２特徴構成は、前記ランプウェイが、前記既存建物の下層階から上層階に亘って上下方向に螺旋状に延びる螺旋ランプウェイであると共に、前記螺旋ランプウェイが、前記入り込み床構造部としての直線状の内部傾斜車路、前記既存建物の外部に位置する直線状の外部傾斜車路、及び、両傾斜車路を繋ぐ曲線状の接続車路を備える点にある。 The second characteristic configuration of the present invention is that the rampway is a spiral rampway that extends spirally in the vertical direction from the lower floors to the upper floors of the existing building, and the spiral rampway has the entrance floor structure. The point is that it is provided with a straight internal inclined lane as a part, a straight external inclined lane located outside the existing building, and a curved connecting lane connecting both inclined lanes.

本構成によれば、既存建物の下層階から上層階に亘るランプウェイが、既存建物の内部に入り込む直線状の内部傾斜車路、既存建物の外部に位置する直線状の外部傾斜車路、及び、両傾斜車路を繋ぐ曲線状の接続車路を備えて上下方向に螺旋状に延びる螺旋ランプウェイであるから、たとえ既存建物が多層階建ての建物であってその上層階に車が出入りするためのスペースを新設する改修も可能となり、螺旋ランプウェイを通って上層階へ自由に行き来することができる。
そして、その螺旋ランプウェイのうちの直線状の内部傾斜車路が、既存建物への入り込み床構造部となるので、例えば、曲線状の接続車路を入り込み床構造部とする場合に比べて、既存建物に対して無駄な空間の発生を極力抑えた状態で要領よく入り込ませることができ、しかも、既存建物の躯体を合理的に利用して内部傾斜車路の支持構造の一部に代用することが可能となる。 According to this configuration, the rampway extending from the lower floors to the upper floors of the existing building enters the inside of the existing building, a straight internal inclined lane, a linear external inclined lane located outside the existing building, and Since it is a spiral rampway that has a curved connecting lane that connects both sloping lanes and extends spirally in the vertical direction, even if the existing building is a multi-story building, cars can enter and exit on the upper floors. It will also be possible to renovate a new space for this purpose, and you will be able to freely move to and from the upper floors through the spiral rampway.
Then, since the straight internal inclined lane of the spiral rampway becomes the entrance floor structure portion to the existing building, for example, as compared with the case where the curved connecting lane is the entry floor structure portion. It is possible to enter the existing building in a state where the generation of wasted space is suppressed as much as possible, and moreover, the skeleton of the existing building is rationally used to substitute for a part of the support structure of the internal inclined lane. It becomes possible.

本発明の第３特徴構成は、前記入り込み床構造部への前記ランプウェイの出入口が、前記既存建物の既存柱を撤去して既存の柱スパンよりも広いスパンの空間で構築され、その撤去した既存柱により支持されていた躯体を隣接する既存柱により吊り下げ支持する点にある。 In the third characteristic configuration of the present invention, the entrance / exit of the rampway to the entrance floor structure portion is constructed by removing the existing pillars of the existing building in a space having a span wider than the existing pillar span, and the existing pillars are removed. The point is that the skeleton supported by the existing columns is suspended and supported by the adjacent existing columns.

本構成によれば、入り込み床構造部へのランプウェイの出入口が、既存建物の既存柱を撤去して既存の柱スパンよりも広いスパンの空間で構築されるので、たとえ柱スパンの狭い既存建物であっても、車の出入に必要な広いスパンの空間を有する出入口を確保することが可能となる。そして、撤去した既存柱により支持されていた躯体は、隣接する既存柱により吊り下げ支持されるので、既存柱の撤去によって既存建物の躯体の支持に支障をきたすこともない。 According to this configuration, the entrance and exit of the ramp way to the entrance floor structure is constructed in a space with a wider span than the existing column span by removing the existing columns of the existing building, so even if the existing building has a narrow column span. Even so, it is possible to secure an entrance / exit having a wide span space required for entering / exiting a vehicle. Then, since the skeleton supported by the removed existing pillars is suspended and supported by the adjacent existing pillars, the removal of the existing pillars does not hinder the support of the skeleton of the existing building.

本発明の第４特徴構成は、前記ランプウェイが、前記入り込み床構造部としての直線状の内部傾斜車路を備え、前記内部傾斜車路を、その直線方向に延びる既存梁に沿って設置した新設傾斜梁と当該新設傾斜梁に交差させて設置した新設梁により構築される新設梁組上に構築する点にある。 In the fourth characteristic configuration of the present invention, the rampway is provided with a linear internal inclined lane as the entrance floor structure portion, and the internal inclined lane is installed along an existing beam extending in the linear direction thereof. The point is that it will be constructed on a new beam assembly constructed by a new inclined beam and a new beam installed intersecting the new inclined beam.

本構成によれば、ランプウェイが、入り込み床構造部としての直線状の内部傾斜車路を備えているので、上述したように、その直線状の内部傾斜車路を既存建物に対して無駄な空間の発生を極力抑えた状態で要領よく入り込ませることができる。
そして、その内部傾斜車路の直線方向に延びる既存梁に沿って設置した新設傾斜梁と当該新設傾斜梁に交差させて設置した新設梁により新設梁組を構築し、その新設梁組上に内部傾斜車路を構築するので、既存建物の既存梁を合理的に利用して内部傾斜車路を確実に支持することが可能となる。 According to this configuration, since the rampway is provided with a straight internal inclined lane as an entry floor structure portion, as described above, the straight internal inclined lane is useless with respect to the existing building. It is possible to enter in a manner that suppresses the generation of space as much as possible.
Then, a new beam assembly is constructed by the new inclined beam installed along the existing beam extending in the linear direction of the internal inclined lane and the new beam installed intersecting the new inclined beam, and the inside is built on the new inclined beam assembly. Since the sloping lane is constructed, it is possible to rationally utilize the existing beams of the existing building to reliably support the internal sloping lane.

建物の改修方法を示す概略斜視図Schematic perspective view showing how to renovate a building 建物の改修方法の要部を示す図３におけるＩＩ−ＩＩ矢視での断面図Sectional view taken along the line II-II in FIG. 3 showing the main part of the building renovation method. 建物の改修方法の要部を示す横断平面図Cross-sectional plan showing the main parts of the building renovation method 図３におけるａ−ａ矢視とｂ−ｂ矢視での左側の断面図Cross-sectional view on the left side of the aa and bb arrows in FIG.

本発明による建物の改修方法の実施形態を図面に基づいて説明する。
本発明の建物の改修方法は、例えば、図１（ａ）（ｂ）に示すように、多層階建ての既存建物１を物流倉庫に改修するなど、既存建物１の上層階に車が出入りするためのスペースを新設するような改修を行って、その既存建物１の外周部に新設床構造部としてのランプウェイ構造部２を増設する場合などに適用される。
新設床構造部の一例であるランプウェイ構造部２は、例えば、鉄骨構造体からなり、既存建物１の任意の下層階（例えば、地上１階部分）から任意の上層階に亘って上下方向に螺旋状に延びる鉄筋コンクリート造の螺旋ランプウェイ３を有し、その螺旋ランプウェイ３を備えたランプウェイ構造部２の一部が、図１（ｂ）に仮想線で示すように、平面視において既存建物１の内部に入り込む状態に配置される。尚、例えば、螺旋ランプウェイ３を鉄骨鉄筋コンクリート造等にしてもよく、新設床構造部の一例であるランプウェイ構造部２は各種の構造を適宜に採用することができる。 An embodiment of a building repair method according to the present invention will be described with reference to the drawings.
In the building renovation method of the present invention, for example, as shown in FIGS. 1A and 1B, a multi-story existing building 1 is renovated into a distribution warehouse, and vehicles enter and exit the upper floors of the existing building 1. This is applied to the case where a rampway structure portion 2 as a new floor structure portion is added to the outer peripheral portion of the existing building 1 by making a renovation such as newly constructing a space for the space.
The rampway structure 2, which is an example of the new floor structure, is composed of, for example, a steel structure, and extends vertically from an arbitrary lower floor (for example, the first floor above the ground) of the existing building 1 to an arbitrary upper floor. A part of the rampway structure 2 having a spiral rampway 3 made of reinforced concrete extending in a spiral shape and having the spiral rampway 3 is existing in a plan view as shown by a virtual line in FIG. 1 (b). It is arranged so as to enter the inside of the building 1. For example, the spiral rampway 3 may be made of steel-framed reinforced concrete or the like, and various structures can be appropriately adopted for the rampway structure 2 which is an example of the new floor structure.

螺旋ランプウェイ３は、図３に示すように、平面視において互いに平行な直線状の傾斜車路４、５を備え、そのうちの一方の傾斜車路４が、既存建物１の内部に入り込む入り込み床構造部に設定される。
すなわち、螺旋ランプウェイ３は、平面視において、既存建物１への入り込み床構造部として既存建物１の内部に位置する上下複数段に配置の直線状の内部傾斜車路４と、この内部傾斜車路４と平行で既存建物１の外部に位置する上下複数段に配置の外部傾斜車路５と、上下複数段に配置の両傾斜車路４、５を各段毎にそれぞれ繋ぐ一対の曲線状（例えば、半円形状）の接続車路６を備え、例えば、地上の１階部分から所望の上層階へ、逆に、所望の上層階から地上へと車で自由に行き来できるように２車線に設定される。 As shown in FIG. 3, the spiral rampway 3 includes linear inclined lanes 4 and 5 parallel to each other in a plan view, and one of the inclined lanes 4 enters the inside of the existing building 1. It is set in the structure part.
That is, in a plan view, the spiral rampway 3 has a linear internal inclined lane 4 arranged in a plurality of upper and lower stages located inside the existing building 1 as a floor structure portion entering the existing building 1, and the internal inclined vehicle. A pair of curved lines connecting the external inclined lanes 5 arranged in multiple upper and lower stages parallel to the road 4 and located outside the existing building 1 and the both inclined lanes 4 and 5 arranged in multiple upper and lower stages for each stage. It is provided with a connecting lane 6 (for example, a semicircular shape), and has two lanes so that the driver can freely move from the first floor above the ground to the desired upper floor and, conversely, from the desired upper floor to the ground. Is set to.

ランプウェイ構造部２の一部である内部傾斜車路４を既存建物１の内部に入り込ませて構築するに際し、図２中に仮想線で示すように、例えば、既存建物１の既存柱７、既存梁８、及び、既存ブレース９の一部は必要に応じて撤去し、更に、内部傾斜車路４の構築に邪魔となる壁材や各種の躯体部分も撤去して、図２及び図３に示すように、代わりに鉄骨製の新設柱１０や長尺の新設梁１１を必要に応じて新たに新設することになる。
特に入り込み床構造部としての内部傾斜車路４への螺旋ランプウェイ３の第１出入口１２と第２出入口１３、すなわち、図３を参照して、１階部分から螺旋ランプウェイ３を反時計回り走行上昇した際に入口となる第１出入口１２と出口となる第２出入口１３（上層階から時計回りに走行下降した際には、入口と出口が逆になる）では既存柱７を撤去して、第１出入口１２は、既存の柱スパンＳ３よりも広いスパンＳ１の空間で、また、第２出入口１３も、既存の柱スパンＳ３よりも広いスパンＳ２の空間で構築される。 When constructing the internal inclined lane 4 which is a part of the rampway structure 2 by entering the inside of the existing building 1, for example, as shown by a virtual line in FIG. 2, for example, the existing pillar 7 of the existing building 1. The existing beam 8 and a part of the existing brace 9 are removed as necessary, and the wall material and various skeleton parts that hinder the construction of the internal inclined lane 4 are also removed, and FIGS. 2 and 3 As shown in the above, instead, a new steel-framed column 10 and a long new beam 11 will be newly installed as needed.
In particular, the first entrance / exit 12 and the second entrance / exit 13 of the spiral rampway 3 to the internal inclined lane 4 as the entrance floor structure portion, that is, referring to FIG. 3, the spiral rampway 3 is counterclockwise from the first floor portion. The existing pillar 7 is removed at the first entrance 12 which becomes the entrance when traveling up and the second entrance 13 which becomes the exit (when traveling downward from the upper floor, the entrance and exit are reversed). The first entrance / exit 12 is constructed in a space having a span S1 wider than the existing pillar span S3, and the second entrance / exit 13 is also constructed in a space having a span S2 wider than the existing pillar span S3.

第１出入口１２においては、既存柱７に加えて既存梁８や既存ブレース９も撤去し、図２及び図３に示すように、代わりに鉄骨製の新設柱１０を立設し、その新設柱１０と既存柱７とに亘って鉄骨製の新設梁１１を連結する。そして、撤去した既存柱７により支持されていた躯体、例えば、残存する既存梁８の一部８ａについては、図２に示すように、鉄骨製の新設ブレース材１４を介して隣接する既存柱７により吊り下げ支持させると共に、新設柱１０に連結する。その他、図示はしないが、撤去した既存柱７や既存梁８により支持されていた各種の躯体も、隣接する既存柱７により吊り下げ支持させたり、新設柱１０に連結して支持させる。尚、新設ブレース１４による吊り下げ支持については、適宜省略しても構わない。
第２出入口１３においても、既存柱７、既存梁８、及び、既存ブレース９などを撤去し、代わりに新設梁１１を既存柱７間に亘って連結し、第１出入口１２の場合と同様に、撤去した既存柱７や既存梁８により支持されていた躯体は、適宜、隣接する既存柱７や新設柱１０により支持させる。 At the first entrance / exit 12, in addition to the existing pillar 7, the existing beam 8 and the existing brace 9 are also removed, and as shown in FIGS. 2 and 3, a new steel-framed pillar 10 is erected instead, and the new pillar is installed. A new steel-framed beam 11 is connected over the 10 and the existing column 7. Then, with respect to the skeleton supported by the removed existing columns 7, for example, a part 8a of the remaining existing beams 8, as shown in FIG. 2, the existing columns 7 adjacent to each other via the newly installed steel brace material 14 It is suspended and supported by the above and connected to the new pillar 10. In addition, although not shown, various skeletons supported by the removed existing columns 7 and existing beams 8 are also suspended and supported by the adjacent existing columns 7 or connected to the new columns 10 to be supported. The suspension support by the newly installed brace 14 may be omitted as appropriate.
At the second doorway 13, the existing pillar 7, the existing beam 8, the existing brace 9, and the like are removed, and instead, the new beam 11 is connected between the existing pillars 7 as in the case of the first doorway 12. The skeleton supported by the removed existing columns 7 and existing beams 8 is appropriately supported by the adjacent existing columns 7 and new columns 10.

入り込み床構造部である直線状の内部傾斜車路４において、第１出入口１２とその近傍部分については、既存建物１内への車の出入を安全かつ容易にするためにほぼ水平な平坦面で構成され、その他の部分が、図３中に矢印Ａで示す部分から矢印方向に向けて順次上昇する傾斜面に構成される。
この傾斜面となる内部傾斜車路４は、図３及び図４（ａ）（ｂ）に示すように、内部傾斜車路４の直線方向に延びる既存梁８の内側に沿って設置した複数の新設傾斜梁１５の上に構築される。
なお、図４（ａ）（ｂ）においては、内部傾斜路４の左側の断面しか示していないが、右側の断面は左側の断面と略対称形である。 In the straight internal inclined lane 4 which is the entrance floor structure portion, the first entrance / exit 12 and the portion in the vicinity thereof are provided with a substantially horizontal flat surface in order to make it safe and easy for vehicles to enter and exit the existing building 1. The other portion is configured as an inclined surface that sequentially rises in the direction of the arrow from the portion indicated by the arrow A in FIG.
As shown in FIGS. 3 and 4 (a) and 4 (b), the internal inclined lane 4 serving as the inclined surface is a plurality of installed along the inside of the existing beam 8 extending in the linear direction of the internal inclined lane 4. It is constructed on the newly installed inclined beam 15.
In addition, in FIGS. 4A and 4B, only the cross section on the left side of the internal ramp 4 is shown, but the cross section on the right side is substantially symmetrical with the cross section on the left side.

より具体的に説明すると、図３及び図４（ａ）（ｂ）を参照して、複数の新設傾斜梁１５が、既存梁８の内側に沿って設置され、その新設傾斜梁１５に交差させて新設傾斜梁１５に亘って複数の新設梁１６が設置され、これら新設傾斜梁１５と新設梁１６により新設梁組１７が構築される。その新設梁組１７が、鉄骨や鉄筋などにより既存建物１の躯体である既存柱７や既存梁８などに連結されて支持される。そして、図４（ａ）（ｂ）に示すように、新設梁組１７上にコンクリートが打設されて内部傾斜路４が構築される。
このように、既存建物１の躯体としての既存柱７や既存梁８などを使用して、入り込み床構造部としての内部傾斜車路４の支持構造を構築し、その支持構造によって内部傾斜車路４を強固に支持するのである。 More specifically, with reference to FIGS. 3 and 4 (a) and 4 (b), a plurality of newly installed inclined beams 15 are installed along the inside of the existing beam 8 and intersect with the newly installed inclined beams 15. A plurality of new beams 16 are installed over the new inclined beams 15, and the new beam assembly 17 is constructed by the new inclined beams 15 and the new beams 16. The new beam assembly 17 is supported by being connected to existing columns 7 and existing beams 8 which are the skeletons of the existing building 1 by steel frames and reinforcing bars. Then, as shown in FIGS. 4A and 4B, concrete is cast on the new beam assembly 17 to construct the internal ramp 4.
In this way, the existing columns 7 and the existing beams 8 as the skeleton of the existing building 1 are used to construct the support structure of the internal inclined lane 4 as the entrance floor structure portion, and the internal inclined lane is constructed by the support structure. It strongly supports 4.

〔別実施形態〕
（１）先の実施形態では、既存建物１の一例として多層階建ての建物を示したが、２階建ての既存建物であっても平屋の既存建物であっても適用可能である。
また、既存建物１が２階建て以上の建物の場合、新設床構造部２としては、螺旋状のランプウェイを有するランプウェイ構造部に限らず、例えば、曲線状や直線状、又は、その他の各種形状のランプウェイを有するランプウェイ構造部に適用することもできる。更に、ランプウェイ構造部に代えて、種々の床構造を備えた各種の新設の床構造部に適用して実施することもでき、既存建物１に増設する新設床構造部２に関しては特に制限はなく、したがって、新設床構造部２のうちの入り込み床構造部４に関しても特に制限はない。 [Another Embodiment]
(1) In the above embodiment, a multi-story building is shown as an example of the existing building 1, but it can be applied to either a two-story existing building or a one-story existing building.
Further, when the existing building 1 is a building having two or more floors, the new floor structure portion 2 is not limited to the rampway structure portion having a spiral rampway, for example, curved, straight, or other. It can also be applied to a rampway structure having rampways of various shapes. Further, instead of the rampway structure part, it can be applied to various new floor structure parts having various floor structures, and there are no particular restrictions on the new floor structure part 2 to be added to the existing building 1. Therefore, there is no particular limitation on the entrance floor structure portion 4 of the new floor structure portion 2.

（２）先の実施形態では、新設床構造部２としてランプウェイ構造部を示し、そのランプウェイ３の入り込み床構造部４への出入口１２、１３に関して、既存建物１の既存柱７を撤去して、既存の柱スパンＳ３よりも広いスパンＳ１、Ｓ２の空間で構築した例を示したが、既存の柱スパンＳ３が出入口１２、１３として十分な広さを有する場合には、特に既存柱７を撤去する必要はない。
また、入り込み床構造部４としての内部傾斜車路を既存梁８に沿って延びる新設傾斜梁１５と新設梁１６で構築した新設梁組１７上に構築した例を示したが、例えば、新設傾斜梁１５は必ずしも既存梁８に沿って延出させる必要はなく、新設梁組１７の具体的な構成は、既存建物１や入り込み床構造部４の具体的な構成に即して種々変更して実施することになる。 (2) In the above embodiment, the rampway structure portion is shown as the new floor structure portion 2, and the existing pillar 7 of the existing building 1 is removed with respect to the entrances 12 and 13 to the entrance floor structure portion 4 of the rampway 3. An example of constructing in a space of spans S1 and S2 wider than the existing pillar span S3 has been shown. However, when the existing pillar span S3 has a sufficient area as the entrances 12 and 13, the existing pillar 7 is particularly large. There is no need to remove.
Further, an example is shown in which the internal inclined lane as the entrance floor structure portion 4 is constructed on the newly installed beam assembly 17 constructed by the newly installed inclined beam 15 and the new beam 16 extending along the existing beam 8, but for example, the newly installed inclined beam is shown. The beam 15 does not necessarily have to extend along the existing beam 8, and the specific configuration of the new beam assembly 17 is variously changed according to the specific configuration of the existing building 1 and the entrance floor structure portion 4. It will be carried out.

１ 既存建物
２ 新設床構造部としてのランプウェイ構造部
３ 螺旋ランプウェイ
４ 入り込み床構造部としての内部傾斜車路
５ 外部傾斜車路
６ 接続車路
７ 既存建物の躯体としての既存柱
８ 既存建物の躯体としての既存梁
８ａ 撤去した既存柱により支持されていた躯体としての既存梁の一部
１２、１３ 出入口
１５ 新設傾斜梁
１６ 新設梁
１７ 新設梁組
Ｓ１、Ｓ２ 出入口のスパン
Ｓ３ 既存の柱スパン 1 Existing building 2 Rampway structure as a new floor structure 3 Spiral rampway 4 Internal inclined lane as an entrance floor structure 5 External inclined lane 6 Connecting lane 7 Existing pillar as a frame of an existing building 8 Existing building Existing beam as skeleton 8a Part of existing beam as skeleton supported by removed existing columns 12, 13 Doorway 15 New inclined beam 16 New beam 17 New beam assembly S1, S2 Doorway span S3 Existing column span

Claims (4)

既存建物の外周部に新設床構造部を増設する建物の改修方法であって、
前記新設床構造部の一部が、平面視において前記既存建物の内部に入り込む状態に配置され、その既存建物への入り込み床構造部の支持構造として前記既存建物の躯体を使用し、
前記既存建物が、複数階建ての建物であり、前記新設床構造部が、前記既存建物の下層階から上層階に亘るランプウェイを有するランプウェイ構造部である建物の改修方法。 It is a method of renovating a building that adds a new floor structure to the outer periphery of an existing building.
A part of the new floor structure is arranged so as to enter the inside of the existing building in a plan view, and the frame of the existing building is used as a support structure for the floor structure that enters the existing building .
A method for renovating a building in which the existing building is a multi-story building and the new floor structure portion is a rampway structure portion having a rampway extending from a lower floor to an upper floor of the existing building. 前記ランプウェイが、前記既存建物の下層階から上層階に亘って上下方向に螺旋状に延びる螺旋ランプウェイであると共に、前記螺旋ランプウェイが、前記入り込み床構造部としての直線状の内部傾斜車路、前記既存建物の外部に位置する直線状の外部傾斜車路、及び、両傾斜車路を繋ぐ曲線状の接続車路を備える請求項１に記載の建物の改修方法。 The rampway is a spiral rampway that spirally extends in the vertical direction from the lower floors to the upper floors of the existing building, and the spiral rampway is a linear internal inclined vehicle as the entrance floor structure portion. road, the existing building linear external tilt wheel path located outside of, and, repair method of a building according to claim 1 comprising a curved connecting car path connecting the both inclined wheel path. 前記入り込み床構造部への前記ランプウェイの出入口が、前記既存建物の既存柱を撤去して既存の柱スパンよりも広いスパンの空間で構築され、その撤去した既存柱により支持されていた躯体を隣接する既存柱により吊り下げ支持する請求項１又は２に記載の建物の改修方法。 The entrance and exit of the ramp way to the entrance floor structure portion is constructed in a space having a span wider than the existing column span by removing the existing columns of the existing building, and the skeleton supported by the removed existing columns. The method for repairing a building according to claim 1 or 2 , wherein the building is suspended and supported by an adjacent existing pillar. 前記ランプウェイが、前記入り込み床構造部としての直線状の内部傾斜車路を備え、前記内部傾斜車路を、その直線方向に延びる既存梁に沿って設置した新設傾斜梁と当該新設傾斜梁に交差させて設置した新設梁により構築される新設梁組上に構築する請求項１〜３のいずれか１項に記載の建物の改修方法。 The rampway is provided with a linear internal inclined lane as the entrance floor structure portion, and the internal inclined lane is provided on a new inclined beam and the newly installed inclined beam installed along an existing beam extending in the linear direction thereof. The method for repairing a building according to any one of claims 1 to 3 , which is constructed on a new beam set constructed by cross-installed new beams.
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