JP2012017597A - Building reconstruction method and building structure - Google Patents
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- 239000011150 reinforced concrete Substances 0.000 claims abstract description 12
- 230000003014 reinforcing Effects 0.000 claims description 45
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000004567 concrete Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000001808 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
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本発明は、既設の鉄筋コンクリート構造の建物の地上部分を解体して土台部を残し、当該土台部上に鉄骨構造の新設建物を建築する建物の建て替え方法および建物構造に関する。 The present invention relates to a rebuilding method and a building structure of a building in which a ground part of an existing reinforced concrete structure is dismantled to leave a base part, and a new steel structure is built on the base part.
従来、既存の住居用マンション等の鉄筋コンクリート構造の建物を建て替える場合、基礎や杭を含む建物全体を解体した後、新たな建物を建築することが行われている。これは新たな建物が用途変更（事務所・店舗等）をともなう場合に、建物重量・地震力の関係で基礎や杭まで影響するためである。
また、既設の建物の基礎や杭を残した状態で建物を解体し、残した基礎の上に新たな建物を建築することが考えられている。即ち、既設の建物の基礎や杭を、新たな建物の基礎や杭として流用しようとするものである。このような、基礎を流用する建築方法として、例えば特許文献１に記載されたものがある。
Conventionally, when a reinforced concrete structure building such as an existing residential apartment is rebuilt, a new building is constructed after dismantling the entire building including foundations and piles. This is because when a new building is used for a change in usage (offices, stores, etc.), the foundation and piles are affected by the relationship between the building weight and seismic force.
In addition, it is considered to dismantle the building while leaving the foundation and piles of the existing building, and build a new building on the remaining foundation. That is, the foundation or pile of an existing building is to be used as the foundation or pile of a new building. As such a construction method using the foundation, there is one described in Patent Document 1, for example.
住居用マンション等の鉄筋コンクリート構造の建物を建て替える際、用途変更等により既設建物の重量以上の新たな建物（店舗用等）を建築する必要がある場合、基礎や杭を含む既設の建物全体を解体した後、新たに基礎工事をやり直す必要があり、建物の建て替えを容易に行うことができないといった問題がある。また、既設の建物の基礎や杭を流用しようとする場合、既設の建物の基礎に対して新たに建築しようとする建物の柱を連結する方法が問題となる。例えば、特許文献１には、基礎の上にトラス架構を組み立てる構成が記載されている。ただし、基礎とトラス架構との連結構造については言及されていない。 When rebuilding a building with a reinforced concrete structure such as a residential condominium, if it is necessary to build a new building (for stores, etc.) that exceeds the weight of the existing building due to changes in usage, etc., the entire existing building including foundations and piles is dismantled After that, there is a problem that the foundation work needs to be redone again, and the building cannot be easily rebuilt. Moreover, when trying to divert the foundation and pile of an existing building, the method of connecting the pillar of the building to be newly constructed to the foundation of the existing building becomes a problem. For example, Patent Document 1 describes a configuration in which a truss frame is assembled on a foundation. However, the connection structure between the foundation and the truss frame is not mentioned.
さらに、例えば、既設の建物の基礎に対して、あと施工アンカー工法によってアンカーボルトを設置し、設置したアンカーボルトを用いて新たな建物の柱と基礎とを連結することが考えられる。しかしながら、建物の新築や増築等において、あと施工アンカー工法で設置されたアンカーボルトを用いて基礎と柱とを連結する方法は、現在の建築基準法において認められておらず、この方法を用いることはできない。 Further, for example, it is conceivable that an anchor bolt is installed by a post-construction anchor method on the foundation of an existing building, and the pillar and foundation of a new building are connected using the installed anchor bolt. However, the method of connecting foundations and pillars using anchor bolts installed in the post-construction anchor method in new construction or expansion of buildings is not permitted by the current Building Standards Act, and this method should be used. I can't.
そこで本発明はこのような問題点に鑑み、建物の建て替えを容易に行うことができる建物の建て替え方法および建物構造を提供することを目的とする。 Then, in view of such a problem, an object of the present invention is to provide a building rebuilding method and a building structure capable of easily rebuilding a building.
本発明は、鉄筋コンクリート構造の既設建物の一部を土台部とし、土台部上に新設建物を建築する建物の建て替え方法であって、土台部から上方向に延びる既設建物の既設柱を、土台部から所定高さ突出するように柱残留部位を残して除去する柱除去工程と、柱残留部位におけるコンクリートを除去し、柱残留部位内の鉄筋を露出させる鉄筋露出工程と、露出させた鉄筋に対して、新設建物の新設柱を連結するための連結部を形成する連結部形成工程と、そして土台部上に新設柱を立設させて、連結部によって新設柱と土台部とを連結する新設柱連結工程とを有することを特徴とする。 The present invention is a method for rebuilding a building in which a part of an existing building having a reinforced concrete structure is used as a base part, and a new building is constructed on the base part, and an existing column of an existing building extending upward from the base part is used as a base part. The column removal process that leaves the column remaining part protruding so as to protrude a predetermined height from the column, the concrete in the column remaining part is removed, the reinforcing bar exposure process that exposes the reinforcing bar in the column remaining part, and the exposed reinforcing bar The connecting part forming process for forming the connecting part for connecting the new pillars of the new building, and the new pillars which are erected on the base part and connect the new pillar and the base part by the connecting part. And a connecting step.
また、本発明は、鉄筋コンクリート構造の既設建物の一部を土台部とし、土台部上に新設建物が建築された建築構造であって、土台部から上方に延びる既設建物の既設柱のコンクリートを除去することによって露出された鉄筋の上端に形成された連結部を備え、連結部によって、土台部上に立設された新設建物の新設柱と、土台部とを連結することを特徴とする。 Further, the present invention is an architectural structure in which a part of an existing building having a reinforced concrete structure is used as a base part, and a new building is built on the base part, and the concrete of existing pillars of the existing building extending upward from the base part is removed. It has the connection part formed in the upper end of the reinforcing bar exposed by doing, and connects the new pillar and the foundation part of the new building erected on the foundation part by the connection part.
本発明によれば、鉄筋コンクリート構造の既設建物から鉄骨構造の新設建物に建て替えることにより、建物の用途変更等を行った場合であっても、建物の重量が軽くなるので既設建物の基礎の強度で新設建物を支えることができ、既設建物の基礎を流用して新設建物を建築することができる。このとき、既設建物の既設柱内の鉄筋を用いて、新設建物の新設柱と土台部とを連結することができる。即ち、既設柱内の鉄筋を、新設柱と土台部とを連結するためのアンカーボルトとして使用することができる。また、既設柱の鉄筋をアンカーボルトとして用いることで、このアンカーボルトは、埋め込みアンカーボルトと同等の効果（柱と土台部との連結力、強度等）を得ることが可能となる。このように、既設柱の鉄筋を、新設柱と土台部とを連結するためのアンカーボルトとして用いることにより、建物の建て替えを容易に行うことができる。 According to the present invention, even if the use of the building is changed by rebuilding from an existing building with a reinforced concrete structure to a new building with a steel structure, the weight of the building is reduced, so the strength of the foundation of the existing building A new building can be supported, and the foundation of an existing building can be used to build a new building. At this time, it is possible to connect the new column and the base portion of the new building using the reinforcing bars in the existing column of the existing building. That is, the reinforcing bar in the existing pillar can be used as an anchor bolt for connecting the new pillar and the base portion. Further, by using the reinforcing bars of the existing columns as anchor bolts, this anchor bolt can obtain the same effects as the embedded anchor bolts (coupling force between column and foundation portion, strength, etc.). In this way, the building can be easily rebuilt by using the reinforcing bars of the existing columns as anchor bolts for connecting the newly installed columns and the base portion.
また、連結部形成工程において、鉄筋に連結部としての雄ネジを形成することが好ましい。これにより、既設柱の鉄筋に容易に連結部（雄ネジ）を形成することができる。
あるいは連結部は雄ネジが形成されたネジ切り鉄筋であり、連結部形成工程において、ネジ切り鉄筋を鉄筋の上端に連結することが好ましい。このように、既設柱の鉄筋にネジ切り鉄筋を連結することにより、既設柱の鉄筋に容易に連結部（ネジ切り鉄筋）を形成することができる。
Moreover, it is preferable to form the external thread as a connection part in a reinforcing bar in a connection part formation process. Thereby, a connection part (male screw) can be easily formed in the reinforcing bar of an existing pillar.
Or a connection part is a threaded rebar in which the external thread was formed, and it is preferable to connect a threaded rebar to the upper end of a reinforcing bar in a connection part formation process. In this manner, by connecting the threaded reinforcing bar to the reinforcing bar of the existing column, a connecting portion (threaded reinforcing bar) can be easily formed on the reinforcing bar of the existing column.
本発明による建物の建て替えは、基礎土台部の工事が不要となるので、工事に伴う騒音・振動の発生を防ぐことができ、当然にその分の工期の短縮およびコストの削減を図れ、また、廃棄物を少なくできる。 The rebuilding of the building according to the present invention eliminates the need for foundation foundation work, so it can prevent the occurrence of noise and vibration associated with the work, naturally shortening the work period and reducing the cost, Waste can be reduced.
次に、本発明に係る建物の建て替え方法及び建築構造の実施形態について説明する。なお、本実施形態において、同一構成要素には同一番号を付して説明を省略する。 Next, an embodiment of a building rebuilding method and a building structure according to the present invention will be described. In the present embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.
図１、図２は、既設建物から新設建物に建て替える工程を示す図である。特に、図１（ａ）は、既設建物の基礎周りを示す図であり、図１（ｂ）および図２（ａ）は、建物の建て替え途中における建物の基礎周りを示す図である。図２（ｂ）は、新設建物の柱を基礎に連結した様子を示す図である。なお、図１、図２において、基礎２０や柱１０は断面を図示しているが、基礎２０や柱１０内の鉄筋１１を図示するために断面を示すハッチング表示を省略している。また、図１、図２において、Ｇ．Ｌは、地中と地上との境界を示し、図中、Ｇ．Ｌより下側が地中となっている。 1 and 2 are diagrams showing a process of rebuilding an existing building to a new building. In particular, FIG. 1 (a) is a diagram showing the surroundings of the foundation of an existing building, and FIGS. 1 (b) and 2 (a) are diagrams showing the surroundings of the foundation of the building during the rebuilding of the building. FIG.2 (b) is a figure which shows a mode that it connected based on the pillar of a new building. In FIGS. 1 and 2, the foundation 20 and the pillar 10 are shown in cross section, but hatching indications showing the cross section are omitted to illustrate the reinforcing bars 11 in the foundation 20 and the pillar 10. In FIGS. L indicates the boundary between the ground and the ground. Below L is underground.
図１（ａ）に示すように、既設建物１は、地中内に埋設された基礎２０と、基礎２０から上方に延びる柱１０とを含んで構成されている。基礎２０は、地中に打ち込まれた杭２２の上に設置されている。基礎２０は、水平方向に延びる地中梁２１を備えている。柱１０および基礎２０は、鉄筋コンクリート構造であり、内部にメッシュ状に配設された鉄筋１１を備えている。 As shown to Fig.1 (a), the existing building 1 is comprised including the foundation 20 embed | buried in the underground, and the pillar 10 extended upwards from the foundation 20. As shown in FIG. The foundation 20 is installed on a pile 22 driven into the ground. The foundation 20 includes an underground beam 21 extending in the horizontal direction. The pillar 10 and the foundation 20 have a reinforced concrete structure, and are provided with reinforcing bars 11 arranged in a mesh shape.
図１（ａ）に示される既設建物１を建て替える場合、まず、柱除去工程として、図１（ｂ）に示すように、基礎２０から上方向に延びる既設建物１の柱１０を、基礎２０から所定高さ突出する柱残留部位１０Ａだけを残して除去する。この柱残留部位１０Ａは、例えば、基礎２０から３００ｍｍ程度突出する高さとする。 When rebuilding the existing building 1 shown in FIG. 1A, first, as a column removing process, as shown in FIG. 1B, the column 10 of the existing building 1 extending upward from the foundation 20 is removed from the foundation 20. Only the column remaining portion 10A protruding at a predetermined height is left and removed. The column residual portion 10A has a height protruding from the base 20 by about 300 mm, for example.
次に、鉄筋露出工程として、図２（ａ）に示すように、柱残留部位１０Ａにおけるコンクリートを除去し、柱残留部位１０Ａ内の鉄筋を露出させる。なお、以降において、露出させた鉄筋を、鉄筋１１Ａとする。 Next, as a reinforcing bar exposure step, as shown in FIG. 2A, the concrete in the column remaining portion 10A is removed, and the reinforcing bars in the column remaining portion 10A are exposed. In the following, the exposed reinforcing bar is referred to as a reinforcing bar 11A.
次に、連結部形成工程として、図２（ａ）に示すように、露出させた鉄筋１１Ａに対して、詳しくは後述する新設建物２の柱５０（図２（ｂ）参照）を連結するための連結部１１Ｂを形成する。具体的には、連結部１１Ｂとして、鉄筋１１Ａの上端にネジ切りによって雄ネジを形成する。 Next, as a connecting portion forming step, as shown in FIG. 2A, in order to connect the pillar 50 (see FIG. 2B) of the new building 2 described later in detail to the exposed reinforcing bar 11A. The connecting portion 11B is formed. Specifically, as the connecting portion 11B, a male screw is formed by threading at the upper end of the reinforcing bar 11A.
次に、新設柱連結工程として、図２（ｂ）に示すように、基礎２０上に新設建物２の柱５０を立設させて、連結部１１Ｂを用いて柱５０と基礎２０とを連結する。 Next, as shown in FIG. 2B, as a new column connecting step, the column 50 of the new building 2 is erected on the foundation 20, and the column 50 and the foundation 20 are connected using the connecting portion 11B. .
ここで、新設建物２の柱５０について説明する。図３は、図２（ｂ）における柱５０のＡ−Ａ部断面を示す図である。図３に示すように柱５０は、鉄骨柱５２と、鉄骨柱５２の下端に取り付けられたベースプレート５１とより構成されている。ベースプレート５１には、鉄筋１１Ａと対応する位置に取り付け孔５３が設けられている。 Here, the pillar 50 of the new building 2 will be described. FIG. 3 is a view showing a cross section taken along the line AA of the column 50 in FIG. As shown in FIG. 3, the column 50 includes a steel column 52 and a base plate 51 attached to the lower end of the steel column 52. The base plate 51 is provided with attachment holes 53 at positions corresponding to the reinforcing bars 11A.
従って、新設柱連結工程では、基礎２０上に新設建物２の柱５０を立設させるときに、ベースプレート５１の取り付け孔５３に鉄筋１１Ａが通される。なお、図２（ｂ）に示すように、ベースプレート５１と基礎２０との間には、無収縮モルタル層７０が形成されている。なお、無収縮モルタル層７０に代えて、コンクリート等を増し打ちしてもよい。 Therefore, in the new column connecting step, when the column 50 of the new building 2 is erected on the foundation 20, the reinforcing bar 11 </ b> A is passed through the mounting hole 53 of the base plate 51. As shown in FIG. 2B, a non-shrink mortar layer 70 is formed between the base plate 51 and the base 20. In place of the non-shrink mortar layer 70, concrete or the like may be struck.
柱５０を基礎２０上に立設させた後、取り付け孔５３に通された鉄筋１１Ａの連結部１１Ｂにナット６０を嵌め込み、ナット６０を締め込むことにより柱５０と基礎２０とを連結する。そして、この柱５０を用いて、基礎２０の上に新設建物２を建築する。 After the pillar 50 is erected on the foundation 20, the nut 60 is fitted into the connecting portion 11 </ b> B of the reinforcing bar 11 </ b> A passed through the attachment hole 53, and the nut 60 is tightened to connect the pillar 50 and the foundation 20. Then, the new building 2 is constructed on the foundation 20 using the pillar 50.
本実施形態は以上のように構成され、鉄筋コンクリート構造の既設建物１から鉄骨構造の新設建物２に建て替えることにより、建物の用途変更等を行った場合であっても、新設建物２の重量が軽くなるので既設建物１の基礎２０の強度で新設建物２を支えることができ、既設建物１の基礎２０を流用して新設建物２を建築することができる。このとき、既設建物１の柱１０内の鉄筋１１Ａを用いて、新設建物２の柱５０と基礎２０とを連結することができる。即ち、既設建物１の柱１０内の鉄筋１１Ａを、新設建物２の柱５０と基礎２０とを連結するためのアンカーボルトとして使用することができる。また、既設建物１の柱１０の鉄筋１１Ａをアンカーボルトとして用いることで、このアンカーボルトは、埋め込みアンカーボルトと同等の効果（柱５０と基礎２０との連結力、強度等）を得ることが可能となる。 The present embodiment is configured as described above, and the weight of the new building 2 is reduced even when the use of the building is changed by reconstructing the existing building 1 having the reinforced concrete structure into the new building 2 having the steel structure. Therefore, the new building 2 can be supported by the strength of the foundation 20 of the existing building 1, and the new building 2 can be constructed by diverting the foundation 20 of the existing building 1. At this time, the pillar 50 and the foundation 20 of the new building 2 can be connected using the reinforcing bar 11A in the pillar 10 of the existing building 1. That is, the reinforcing bar 11A in the pillar 10 of the existing building 1 can be used as an anchor bolt for connecting the pillar 50 and the foundation 20 of the new building 2. Further, by using the reinforcing bar 11A of the pillar 10 of the existing building 1 as an anchor bolt, this anchor bolt can obtain the same effects as the embedded anchor bolt (coupling force, strength, etc. between the pillar 50 and the foundation 20). It becomes.
このように、既設建物２の基礎２０を流用し、既設建物１の柱１０内の鉄筋１１Ａを、新設建物２の柱５０と基礎２０とを連結するためのアンカーボルトとして用いることにより、鉄筋コンクリート構造の既設建物１から鉄骨構造の新設建物２への建て替えを容易に行うことができる。これにより、建て替えの工期の短縮、コスト低減を図ることができる。また、基礎２０の部分を利用して新設建物２を建築するため、基礎２０を含めて既設建物１の全てを取り壊して建て替える場合と比較して、廃棄物の量を大幅に減らすことができる。 In this way, by utilizing the foundation 20 of the existing building 2 and using the reinforcing bar 11A in the column 10 of the existing building 1 as an anchor bolt for connecting the column 50 and the foundation 20 of the new building 2, a reinforced concrete structure is provided. The rebuilding from the existing building 1 to the new building 2 having a steel structure can be easily performed. Thereby, shortening of the construction period of rebuilding and cost reduction can be aimed at. Moreover, since the new building 2 is built using the portion of the foundation 20, the amount of waste can be greatly reduced as compared with the case where the existing building 1 including the foundation 20 is demolished and rebuilt.
また、鉄筋１１Ａの上端にネジ切りによって雄ネジを形成するものとしたので、新設建物２の柱５０と基礎２０とを連結するための連結部１１Ｂを鉄筋１１Ａに容易に形成することができる。 Moreover, since the external thread is formed at the upper end of the reinforcing bar 11A by threading, the connecting portion 11B for connecting the column 50 and the foundation 20 of the new building 2 can be easily formed in the reinforcing bar 11A.
なお、本願発明は上記実施形態に限定されるものではない。例えば、連結部形成工程において、鉄筋１１Ａの上端に連結部１１Ｂとしての雄ネジを形成するものとしたが、これ以外にも、例えば、雄ネジが形成されたネジ切り鉄筋を鉄筋１１Ａの上端に連結することによって連結部１１Ｂを形成することもできる。この鉄筋１１Ａとネジ切り鉄筋との連結には、例えば、ガス圧接継手、突合せ溶接、エンクローズ溶接、鋼管圧着継手、モルタル充填式継手、ねじ節鉄筋継手とモルタル充填式継手との併用、鋼管圧着継手と接続ボルトによるトルク固定方式との併用等、適宜の方法を用いることができる。 In addition, this invention is not limited to the said embodiment. For example, in the connecting portion forming step, a male screw as the connecting portion 11B is formed on the upper end of the reinforcing bar 11A. However, for example, a threaded reinforcing bar having a male screw formed on the upper end of the reinforcing bar 11A. The connection part 11B can also be formed by connecting. For connecting the reinforcing bar 11A and the threaded reinforcing bar, for example, gas pressure welding joint, butt welding, enclose welding, steel pipe crimping joint, mortar filling joint, combined use of a screw joint and mortar filling joint, steel pipe crimping An appropriate method such as a combined use of a torque fixing method using a joint and a connecting bolt can be used.
また、上記実施形態では、土台部としての基礎２０上に柱５０を立設させて新設建物２を建築するものとしたが、例えば、既設建物１の２階以上の部分を除去することによって既設建物１の１階部分を土台部とし、２階部分の柱の鉄筋をアンカーボルトとすることにより、既設建物１の１階部分の上に新設建物２を建築することもできる。 Further, in the above embodiment, the new building 2 is constructed by erecting the pillar 50 on the foundation 20 as the base portion. For example, the existing building 1 is removed by removing the second floor or more portions. The new building 2 can be constructed on the first floor portion of the existing building 1 by using the first floor portion of the building 1 as a base portion and the reinforcing bars of the pillars of the second floor portion as anchor bolts.
１・・・既設建物
２・・・新設建物
１０・・・柱（既設柱）
１１，１１Ａ・・・鉄筋
１１Ｂ・・・連結部
２０・・・基礎（土台部）
２１・・・地中梁（土台部）
５０・・・柱（新設柱）
５１・・・ベースプレート（新設柱）
1 ... Existing building 2 ... New building 10 ... Pillar (existing column)
11, 11A ... rebar 11B ... connection part 20 ... foundation (base part)
21 ... Underground beam (base)
50 ... Pillar (new pillar)
51 ... Base plate (new pillar)
Claims (4)
前記土台部から上方向に延びる前記既設建物の既設柱を、前記土台部から所定高さ突出する柱残留部位を残して除去する柱除去工程と、
前記柱残留部位におけるコンクリートを除去し、前記柱残留部位内の鉄筋を露出させる鉄筋露出工程と、
露出させた前記鉄筋に対して、前記新設建物の新設柱を連結するための連結部を形成する連結部形成工程と、
前記土台部上に前記新設柱を立設させて、前記連結部によって前記新設柱と前記土台部とを連結する新設柱連結工程と、
を有することを特徴とする建物の建て替え方法。 A method for rebuilding a building in which a part of an existing building having a reinforced concrete structure is used as a base, and a new building having a steel structure is built on the base,
A column removing step of removing an existing column of the existing building extending upward from the base portion, leaving a column residual portion protruding from the base portion by a predetermined height;
Reinforcing bar exposure step of removing the concrete in the column residual site, exposing the reinforcing bar in the column residual site,
A connecting part forming step for forming a connecting part for connecting a new pillar of the new building to the exposed reinforcing bar,
A new pillar connecting step of standing the new pillar on the base part and connecting the new pillar and the base part by the connecting part;
A method for rebuilding a building, characterized by comprising:
前記連結部形成工程において、前記ネジ切り鉄筋を前記鉄筋の上端に連結することを特徴とする請求項１に記載の建物の建て替え方法。 The connecting portion is a threaded reinforcing bar in which a male screw is formed,
The building rebuilding method according to claim 1, wherein in the connecting portion forming step, the threaded reinforcing bar is connected to an upper end of the reinforcing bar.
前記土台部から上方に延びる前記既設建物の既設柱のコンクリートを除去することによって露出された鉄筋の上端に形成された連結部を備え、
前記連結部によって、前記土台部上に立設された前記新設建物の新設柱と、前記土台部とを連結することを特徴とする建築構造。
A part of an existing building with a reinforced concrete structure is a base part, and a new structure with a steel structure is built on the base part,
A connecting portion formed on the upper end of the rebar exposed by removing the concrete of the existing pillar of the existing building extending upward from the base portion;
An architectural structure characterized in that, by the connecting portion, a new pillar of the new building erected on the base portion and the base portion are connected.
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|---|---|---|---|---|
| JPS5523212A (en) * | 1978-08-04 | 1980-02-19 | Maeda Construction | Method of coupling concrete structure |
| JPH1025808A (en) * | 1996-07-10 | 1998-01-27 | Hitachi Metals Ltd | Steel column base anchoring structure |
| JP2001303677A (en) * | 2001-03-16 | 2001-10-31 | Kajima Corp | Installing method for post-installation anchor |
| JP2003027591A (en) * | 2001-07-12 | 2003-01-29 | Shimizu Corp | Connection structure between column and bottom plate |
| JP2003336405A (en) * | 2002-05-20 | 2003-11-28 | Sanki Eng Co Ltd | Structure bearing foundation and construction method of the same |
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2010
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5523212A (en) * | 1978-08-04 | 1980-02-19 | Maeda Construction | Method of coupling concrete structure |
| JPH1025808A (en) * | 1996-07-10 | 1998-01-27 | Hitachi Metals Ltd | Steel column base anchoring structure |
| JP2001303677A (en) * | 2001-03-16 | 2001-10-31 | Kajima Corp | Installing method for post-installation anchor |
| JP2003027591A (en) * | 2001-07-12 | 2003-01-29 | Shimizu Corp | Connection structure between column and bottom plate |
| JP2003336405A (en) * | 2002-05-20 | 2003-11-28 | Sanki Eng Co Ltd | Structure bearing foundation and construction method of the same |
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