DEMOLITION METHOD OF REINFORCED CONCRETE STRUCTURE

• Main Authors: ISHIMARU TATSURO, TANAKA TAKAHIRO, NARITA NOBUHIDE, MATSUOKA AKIHIKO, KOSAKA HIROYUKI, SUZUKI SHINYA, RIKIISHI SHIGEO, IDO YASUHIRO, SUZUKI SHINKO, MIGITA SHUHEI, SASAKI KIYOHISA, KUDO MASAATSU, YAMAZAKI TERUJI, BABA ASAYUKI, SHIMOZAKA KENJI
• Format: Patent
• Language: English; Japanese
• Published: 01.10.2020
• Subjects: BUILDING; BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIRUSE; FIXED CONSTRUCTIONS; FORMS; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTINGBUILDINGS; SCAFFOLDING; SHUTTERING

To provide a demolition method with improved efficiency in a demolition work by making it possible to embrittle a wide range of concrete at once to demolish.SOLUTION: A hole with a predetermined size is opened with a prescribed interval at a position where a reinforcement 4 of a reinforced concrete structure 1 is arranged, to expose the reinforcement 4. Output cables 8, 9 from a direct current power source 7 are connected to the exposed reinforcement 4 respectively via terminals 5, 6. A control portion 10 sets and outputs a current value and a voltage becoming a heating temperature to the direct current power source 7. By electric conduction, the reinforcement 4 is heated and expanded, to generate a crack in concrete, to lower concrete strength, and to lower adhesion between the reinforcement 4 and the concrete. The concrete can be broken by small force by crush.SELECTED DRAWING: Figure 2 【課題】広い範囲のコンクリートを一気に脆弱化して解体できるようにし、解体作業の効率を高めた解体方法を提供する。【解決手段】鉄筋コンクリート構造物１の鉄筋４が配設されている位置に所要間隔をもって所要大きさの穴を開けて鉄筋４を露出させ、露出させた鉄筋４にそれぞれ端子５、６を介して直流電源７からの出力ケーブル８、９を連結させ、直流電源７に対して制御部１０において加熱温度となる電流値と電圧と設定して出力させ、通電により鉄筋４が加熱して膨張することでコンクリートにひび割れを生じさせると共にコンクリート強度の低下と、鉄筋４とコンクリートとの付着力を低下させ、圧砕による小さな力でコンクリートを破砕できるようにした。【選択図】図２