JPS603595B2 - How to dismantle concrete structures - Google Patents
How to dismantle concrete structuresInfo
- Publication number
- JPS603595B2 JPS603595B2 JP13232480A JP13232480A JPS603595B2 JP S603595 B2 JPS603595 B2 JP S603595B2 JP 13232480 A JP13232480 A JP 13232480A JP 13232480 A JP13232480 A JP 13232480A JP S603595 B2 JPS603595 B2 JP S603595B2
- Authority
- JP
- Japan
- Prior art keywords
- sheath
- steel material
- dismantling
- concrete structure
- steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Description
【発明の詳細な説明】
原子力発電所の耐震壁等にみられるように、コンクリー
ト部材の肉厚が大で且つ鉄筋量が多い構造物の解体は極
めて困難である。DETAILED DESCRIPTION OF THE INVENTION It is extremely difficult to dismantle structures that have thick concrete members and a large amount of reinforcing bars, such as the earthquake-resistant walls of nuclear power plants.
本発明はこのような大型の厚肉コンクリート構造体の解
体を容易ならしめるために提案されたものであって、コ
ンクリート構造体に埋設されたシースに挿入されたＰＣ
鋼材の緊張力を解除して同ＰＣ鋼材を前記シースより引
抜き、次いで同シース内に爆薬を装填して起爆すること
を特徴とするコンクリート構造体の解体方法に係るもの
である。The present invention was proposed in order to facilitate the dismantling of such large thick concrete structures, and the present invention was proposed in order to facilitate the dismantling of such large thick concrete structures.
This method relates to a method for dismantling a concrete structure, which comprises releasing the tension in the steel material, pulling out the prestressed steel material from the sheath, and then loading an explosive into the sheath and detonating it.
本発明においては鉄筋の代りにＰＣ鋼材を使用し、同Ｐ
Ｃ鋼材を構造体に埋設されたシースに挿入緊張し、かく
してコンクリート中にプレストレスを導入することによ
って鉄筋量を減少せしめ、コンクリート構造体の解体を
容易ならしめるものである。In the present invention, PC steel is used instead of reinforcing steel, and
The C steel material is inserted into a sheath buried in the structure and tensioned, thus introducing prestress into the concrete, thereby reducing the amount of reinforcing bars and facilitating the dismantling of the concrete structure.
而して本発明においては前記コンクリート構造体の解体
時、前記ＰＣ鋼材の緊張力を解除して同ＰＣ鋼材をシー
スより引抜き、かくしてＰＣ鋼材引抜後、コンクリート
構造体内に残留したシースを利用してその内腔部に爆薬
を装填して起爆することによって前記構造体を容易に爆
破解体しうるものである。Accordingly, in the present invention, when the concrete structure is dismantled, the tension of the PC steel is released and the PC steel is pulled out from the sheath, and the sheath remaining in the concrete structure is utilized after the PC steel is pulled out. By loading explosives into the inner cavity and detonating them, the structure can be easily exploded and dismantled.
このように本発明によればＰＣ鋼材除去後のシース内腔
部を爆薬装填孔として利用することによって、新らたに
爆薬装填用の孔を穿孔する必要がなくなり、また場所に
よってＰＣ鋼材の緊張力を残しておいて、解体を効果的
に、能率的に行なうこともでき、本発明によれば解体に
要する工期を大幅に短縮し、解体費を節減しうるもので
ある。以下本発明を図示の実施例について説明する。As described above, according to the present invention, by using the inner cavity of the sheath after removing the PC steel material as an explosive loading hole, there is no need to newly drill a hole for loading the explosive, and the tension of the PC steel material can be adjusted depending on the location. It is also possible to carry out dismantling effectively and efficiently while retaining sufficient power, and according to the present invention, the construction period required for dismantling can be significantly shortened and dismantling costs can be reduced. The present invention will be described below with reference to the illustrated embodiments.
１はコンクリート構造体で、所要位置毎にポリエチレン
等より構成されたシース２が埋設され、同各シース２に
はＰＣ鋼より線等より構成されたＰＣ鋼材３が挿入緊張
されてコンクリート構造体１に定着され、コンクリート
部にプレストレスが導入されている。Reference numeral 1 denotes a concrete structure, in which sheaths 2 made of polyethylene etc. are buried at required positions, and PC steel materials 3 made of wires etc. made of prestressed steel are inserted and tensioned into each sheath 2 to form the concrete structure 1. and prestress is introduced into the concrete part.
前記ＰＣ鋼材３は防錆及び解体のための緊張力解除及び
引抜が可能なように、その外周にグリース４等の滑剤が
被着されている。而して前記構造物１を解体する場合、
先ずＰＣ鋼材３の緊張力を解除してシース２より引抜き
、次いでＰＣ鋼材３の引抜かれた後、前記構造物１に残
留したシース２の内腔部に、モルタル等のバック材５を
装填したのち爆薬６を装填し、更にシース２の内腔部の
開口端部をモルタル等のシール材７でシールしたのち、
前記爆薬６を起爆し、前記構造物１を爆破解体するもの
である。以上本発明を実施例について説明したが、本発
明は勿論このような実施例にだけ局限されるものではな
く、本発明の精神を逸脱しない範囲内で種々の設計の改
変を施しうるものである。A lubricant such as grease 4 is coated on the outer periphery of the PC steel material 3 so as to prevent rust and to release tension for disassembly and to enable pulling out. When dismantling the structure 1,
First, the tension of the PC steel material 3 was released and it was pulled out from the sheath 2, and then, after the PC steel material 3 was pulled out, a backing material 5 such as mortar was loaded into the inner cavity of the sheath 2 that remained in the structure 1. Afterwards, an explosive 6 is loaded and the open end of the inner cavity of the sheath 2 is sealed with a sealing material 7 such as mortar.
The explosive 6 is detonated and the structure 1 is exploded and dismantled. Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various ways without departing from the spirit of the present invention. .
第１図及び第２図は本発明に係るコンクリート構造体の
解体方法の一実施例の工程説明図、第３図はＰＣ鋼材を
シースに挿入した状態を示す斜面図である。
１・・・・・・コンクリート構造体、２…・・・シース
、３・・・・・・ＰＣ鋼材、６・・・・・・爆薬。
第１図第２図
第３図FIGS. 1 and 2 are process explanatory diagrams of an embodiment of the method for dismantling a concrete structure according to the present invention, and FIG. 3 is a perspective view showing a state in which a PC steel material is inserted into a sheath. 1... Concrete structure, 2... Sheath, 3... PC steel, 6... Explosives. Figure 1 Figure 2 Figure 3
Claims (1)
たＰＣ鋼材の緊張力を解除して同ＰＣ鋼材を前記シース
より引抜き、次いで同シース内に爆薬を装填して起爆す
ることを特徴とするコンクリート構造体の解体方法。 ２ コンクリート構造体に埋設されたシースに挿入され
且つグリースを被着されたＰＣ鋼材の緊張力を解除して
同ＰＣ鋼材を前記シースより引抜き、次いで同シース内
に爆薬を装填して起爆することを特徴とするコンクリー
ト構造体の解体方法。[Claims] 1. Release the tension of a PC steel material inserted into a sheath buried in a concrete structure, pull out the PC steel material from the sheath, and then load an explosive into the sheath and detonate it. A method for dismantling a concrete structure characterized by: 2. Release the tension of a prestressing steel material inserted into a sheath buried in a concrete structure and coated with grease, pull out the prestressing steel material from the sheath, and then load an explosive into the sheath and detonate it. A method for dismantling a concrete structure characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13232480A JPS603595B2 (en) | 1980-09-25 | 1980-09-25 | How to dismantle concrete structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13232480A JPS603595B2 (en) | 1980-09-25 | 1980-09-25 | How to dismantle concrete structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5758771A JPS5758771A (en) | 1982-04-08 |
| JPS603595B2 true JPS603595B2 (en) | 1985-01-29 |
Family
ID=15078648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13232480A Expired JPS603595B2 (en) | 1980-09-25 | 1980-09-25 | How to dismantle concrete structures |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS603595B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60138170A (en) * | 1983-09-30 | 1985-07-22 | 前田建設工業株式会社 | Disassembling of prestressed concrete structure |
-
1980
- 1980-09-25 JP JP13232480A patent/JPS603595B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5758771A (en) | 1982-04-08 |
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