MULTI-LEG STEEL STACK DEMOLITION METHOD

• Main Authors: KANEKO YUGO, OMORI SHIGEYOSHI
• Format: Patent
• Language: English; Japanese
• Published: 06.10.2016
• 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

PROBLEM TO BE SOLVED: To provide a demolition method of a multi-leg steel stack, which can easily, safely, and economically demolish the stack without using a climbing crane.SOLUTION: An upper inclined part 5 is cut off by repeatedly carrying out a process to cut off a lower part of a central cylindrical body 2 and a lower part of the upper inclined part 5 and subsequently hang the central cylindrical body 2 along with an outer cylindrical body 3 down by a first jack 12. A parallel part 7 is cut off by repeatedly carrying out a process to hang the central cylindrical body 2 down by the first jack 12 after cutting off the lower parts of the central cylindrical body 2 and the parallel part 7. Subsequently the first jack 12 is replaced with a second jack 15 and the lower part of the central cylindrical body 2 is cut off. Subsequently the central cylindrical body 2 is hanged down by the second jack 15, and when an apex 4 passes through an upper part of a lower inclined part 6, the second jack 15 is replaced with the first jack 12 to cut off the lower part of the central cylindrical body. Subsequently, the central cylindrical body 2 along with the apex 4 are hanged down by the first jack 12 to remove the apex 4 and then remove the lower inclined part.SELECTED DRAWING: Figure 1 【課題】クライミングクレーンを用いずに容易に安全にかつ経済的に解体することが可能な、多脚型鋼製煙突の解体方法を提供する。【解決手段】中央筒身２の下部および上部傾斜部５の下部を切断した後第１ジャッキ１２によって中央筒身２を外側筒身３と共に吊り下ろし、これらの工程を繰り返し行って上部傾斜部５を切断する。次いで、中央筒身２下部および平行部７下部を切断した後第１ジャッキ１２によって中央筒身２を吊り下ろし、これらの工程を繰り返し行って平行部７を切断する。次いで、第１ジャッキ１２を第２ジャッキ１５に盛り替え中央筒身２の下部を切断する。次いで、第２ジャッキ１５によって中央筒身２を吊り下ろし頂部４が下段傾斜部６の上部を通過したら第２ジャッキ１５を第１ジャッキ１２に盛り替え中央筒身の下部を切断する。次いで、第１ジャッキ１２によって中央筒身２を頂部４と共に吊り下ろし頂部４を撤去して下部傾斜部を撤去する。【選択図】図１