JP2002213086A - Method of dismantling steel tower - Google Patents
Method of dismantling steel towerInfo
- Publication number
- JP2002213086A JP2002213086A JP2001008000A JP2001008000A JP2002213086A JP 2002213086 A JP2002213086 A JP 2002213086A JP 2001008000 A JP2001008000 A JP 2001008000A JP 2001008000 A JP2001008000 A JP 2001008000A JP 2002213086 A JP2002213086 A JP 2002213086A
- Authority
- JP
- Japan
- Prior art keywords
- stage
- tower body
- lower stage
- middle stage
- cylindrical tower
- 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.)
- Granted
Links
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は鋼製鉄塔、特に電波
塔であってスダレ空中線用の取付金物が設けられている
鋼製鉄塔の解体方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for dismantling a steel tower, and more particularly to a method for disassembling a steel tower provided with a metal fitting for a Sudare antenna.
【０００２】[0002]
【発明が解決しようとする課題】従来、スダレ空中線を
備えて電波塔として使用されていた鋼製鉄塔を解体する
に際して、この鋼製鉄塔が山の頂上などに立てられてい
て大型クレーンなどの揚重装置を解体現場に入れること
ができないことから、通常、溶接装置を用いながら鋼製
鉄塔を上部から小さな部材に切断してウィンチなどの揚
重手段で地上に荷降ろしする手順をとっている。このた
め、鋼製鉄塔の解体に伴い前記揚重手段の盛り替え作業
を行なわなければならず、手間が煩雑になるとともに作
業時の危険性も高いという不都合がある。また、山間部
で大量のガス切断を行なうために、火災発生の危険性も
高くなっていて火災防止に要するコストが高いという不
都合があった。そこで本発明は上記事情に鑑み、解体す
る鋼製鉄塔の部材を最大限に利用して従来必要とされて
きた仮設設備を最小限にするとともに、ガス切断を行な
う解体の作業空間を雨、雪などから保護できるように
し、そして、揚重装置の盛り替え作業を少なくし、さら
には雨水を溜めてこれを防火用水として利用できるよう
にすることを課題とし、鋼製鉄塔の解体を安全にて、か
つ効率的に行なうとともに、火災防止に対して適切な対
策を低コストにて行なえるようにすることを目的とする
ものである。When dismantling a steel tower that has been used as a radio tower with a Sudare antenna, the steel tower is set up on the top of a mountain and lifted by a large crane or the like. Since the heavy equipment cannot be put into the demolition site, usually, a procedure is used in which a steel tower is cut into small members from the top using a welding device and then unloaded onto the ground by a lifting means such as a winch. For this reason, the work of changing the lifting means must be performed in accordance with the dismantling of the steel steel tower, which is inconvenient in that the work is complicated and the danger during the work is high. In addition, since a large amount of gas is cut in the mountainous area, there is a disadvantage that the risk of fire is increased and the cost required for fire prevention is high. In view of the above, the present invention minimizes the temporary facilities conventionally required by maximizing the use of steel tower members to be dismantled, and reduces the work space for disassembly for gas cutting by rain and snow. The purpose is to reduce the work of changing the lifting equipment, and to collect rainwater so that it can be used as fire water, and safely dismantle the steel tower. It is an object of the present invention to perform an efficient and efficient fire prevention measure at a low cost.
【０００３】[0003]
【課題を解決するための手段】本発明は上記課題を考慮
してなされたもので、鋼製の筒状塔体の周囲に設けられ
ている上段ステージが該筒状塔体の上端に位置している
とともに、前記筒状塔体の周囲に設けられている中段ス
テージと下段ステージとが前記上段ステージから下方に
それぞれ間隔をおいて順に位置し、前記筒状塔体の上下
方向に亘ってスダレ空中線取付金物が設けられている鋼
製鉄塔を解体するにあたり、前記筒状塔体に雨水を送り
込む屋根シートとウィンチからなる揚重手段を上段ステ
ージに設け、前記中段ステージと下段ステージとに筒状
塔体に開けた孔に抜き差し可能に係止するカンヌキ式支
持手段を設けて、該中段ステージと下段ステージとを、
前記カンヌキ式支持手段を介して筒状塔体に係止させた
状態で筒状塔体から切り離し、前記中段ステージに設け
た牽引手段で前記下段ステージを吊支して下段ステージ
における前記カンヌキ式支持手段の筒状塔体に対する係
止を解き、下段ステージ上方のスダレ空中線取付金物を
取り除きながら前記牽引手段により下段ステージを中段
ステージ側に引き上げ、中段ステージとこの中段ステー
ジに接近して前記カンヌキ式支持手段を介して筒状塔体
に係止した下段ステージとを、昇降用シリンダーからな
る伸縮手段により連結し、中段ステージ上方のスダレ中
空線取付金物を取り除きながら、前記カンヌキ式支持手
段の筒状塔体に対する係脱と前記伸縮手段の伸縮とによ
り中段ステージと下段ステージとを交互に上昇させ、上
段ステージと該上段ステージに近接した中段ステージと
をスダレ空中線取付金物に取り付けた補強部材を介して
連結して、中段ステージで前記上段ステージを支持し、
前記上段ステージと中段ステージとの間の作業空間をス
テージ外周に亘るシートで囲み、カンヌキ式支持手段の
筒状塔体に対する係脱と伸縮手段の伸縮とにより中段ス
テージと下段ステージとを交互に降下させながら、前記
作業空間での筒状塔体の解体と前記揚重手段による解体
部材の搬出とを行なうことを特徴とする鋼製鉄塔の解体
方法を提供して、上記課題を解消するものである。SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and an upper stage provided around a steel tubular tower is located at an upper end of the tubular tower. And a middle stage and a lower stage provided around the cylindrical tower are sequentially positioned below the upper stage at intervals from each other, and are arranged vertically in the vertical direction of the cylindrical tower. In dismantling the steel tower provided with the antenna mounting hardware, a lifting means comprising a roof sheet and a winch for sending rainwater into the cylindrical tower body is provided on the upper stage, and the lifting means including the middle stage and the lower stage are cylindrically shaped. Providing a kanuki-type support means that is removably locked to the hole opened in the tower body, the middle stage and the lower stage,
The tanuki-type support in the lower stage is cut off from the cylindrical tower in a state where it is locked to the cylindrical tower via the kanuki-type support means, and the lower stage is suspended and supported by traction means provided on the middle stage. The lower stage is lifted to the middle stage side by the traction means while releasing the locking of the means to the cylindrical tower body and removing the Sudare antenna mounting hardware above the lower stage, and approaching the middle stage and this middle stage, the Kannuki type support The lower stage, which is locked to the cylindrical tower body through the means, is connected to the lower stage by an expansion / contraction means composed of an elevating cylinder, and while removing the Sudare hollow wire mounting hardware above the middle stage, the cylindrical tower of the Kannuki type support means is removed. The middle stage and the lower stage are alternately raised by the engagement and disengagement with the body and the expansion and contraction of the expansion and contraction means, and the upper stage and the upper stage Linked via a reinforcing member attached to a middle stage in close proximity to the stage blind antenna mounting hardware, to support the upper stage in the middle stage,
The work space between the upper stage and the middle stage is surrounded by a sheet extending around the outer periphery of the stage, and the middle stage and the lower stage are alternately lowered by the engagement and disengagement of the Kannuki type support means with respect to the cylindrical tower and the expansion and contraction of the expansion and contraction means. While dismantling the cylindrical tower body in the work space and carrying out the dismantling member by the lifting means, a method for dismantling a steel steel tower is provided to solve the above problem. is there.
【０００４】[0004]
【発明の実施の形態】つぎに本発明を図１から図９に示
す実施の形態に基づいて詳細に説明する。図中１は電波
塔として利用された鋼製鉄塔で、該鋼製鉄塔１は、鋼製
の筒状塔体２の高さ方向に亘って上方から順に上段ステ
ージ３と中段ステージ４と下段ステージ５とが位置して
いて、上段ステージ３は筒状塔体２の上端に位置し筒状
塔体２の周囲に設けられており、中段ステージ４は筒状
塔体２の高さ方向における中位置にあって筒状塔体２の
周囲に設けられ、さらに下段ステージ５は筒状塔体２の
高さ方向における下位置、即ち地上部に近い位置であっ
て筒状塔体２の周囲に設けられている。また、上段ステ
ージ３から中段ステージ４の間の筒状塔体２の周囲と、
中段ステージ４から下段ステージ５の間の筒状塔体２の
周囲には、上下方向に亘るスダレ空中線取付金物６が設
けられている。さらに、図において７は筒状塔体２の下
部から地上部に渡された支脚を示し、８は地中の基礎を
示している。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail with reference to the embodiments shown in FIGS. In the figure, reference numeral 1 denotes a steel tower used as a radio tower. The steel tower 1 includes an upper stage 3, a middle stage 4, and a lower stage in order from the top in the height direction of a steel tubular tower body 2. 5, the upper stage 3 is located at the upper end of the cylindrical tower body 2 and is provided around the cylindrical tower body 2, and the middle stage 4 is a middle stage in the height direction of the cylindrical tower body 2. And the lower stage 5 is provided at a position below the cylindrical tower 2 in the height direction, that is, at a position close to the ground portion and around the cylindrical tower 2. Is provided. In addition, around the cylindrical tower body 2 between the upper stage 3 and the middle stage 4,
Surrounding the cylindrical tower body 2 between the middle stage 4 and the lower stage 5 is provided a vertical Sudare antenna fitting 6. Further, in the figure, reference numeral 7 denotes a supporting leg extending from the lower portion of the cylindrical tower body 2 to the ground, and reference numeral 8 denotes an underground foundation.
【０００５】上記構造の鋼製鉄塔１の解体は、解体段取
り、昇降用カンヌキ式支持手段の設置、ステージ切り離
し、下段ステージ上昇、昇降手段の設置、中段・下段ス
テージ上昇、上段・中段ステージ連結、筒状塔体解体降
下、ステージ解体の各ステップを経る。[0005] The dismantling of the steel tower 1 having the above-mentioned structure includes dismantling setup, installation of lifting and lowering cannuki type support means, stage separation, lower stage ascending, installation of lifting and lowering means, middle and lower stage ascending, upper and middle stage connecting, Through the steps of dismantling the cylindrical tower and dismantling the stage.
【０００６】（解体段取り）（図１） まず、上段ステージ３にウィンチなどの小形の揚重手段
９を設置する。１０は前記揚重手段９における吊りワイ
ヤである。また、この鋼製鉄塔１を解体するガス切断の
防火対策の一つとして防火用水を貯め置く工夫が施され
ている。これは上段ステージ３に前記筒状塔体２の内部
に雨水を送り込む屋根シート１１を張るとともに、筒状
塔体２の内底部をシーリング１２して、前記筒状塔体２
の内部に入った雨水がこの筒状塔体２の内底部に溜まる
ようにしたものであり、溜めた雨水を火災時の消火など
に利用する。上記三つのステージ３、４、５それぞれに
あっては外周に手摺りを取り付ける外周養生１３を施す
とともに、中段ステージ４と下段ステージ５とには火花
養生のための図示しない作業床養生を施す。そして、各
養生を施した中段ステージ４と下段ステージ５とには前
記揚重手段９を用いて各種補強材を荷揚げする。(Dismantling Setup) (FIG. 1) First, a small lifting means 9 such as a winch is installed on the upper stage 3. Reference numeral 10 denotes a suspension wire in the lifting means 9. Further, as one of the fire prevention measures for gas cutting for dismantling the steel tower 1, a device for storing fire prevention water is provided. This is done by placing a roof sheet 11 for feeding rainwater into the inside of the cylindrical tower body 2 on the upper stage 3 and sealing 12 the inner bottom of the cylindrical tower body 2 to form the cylindrical tower body 2.
The rainwater entering the inside of the cylindrical tower 2 is collected at the inner bottom of the cylindrical tower 2, and the collected rainwater is used for extinguishing a fire or the like. In each of the three stages 3, 4, and 5, an outer peripheral curing 13 for attaching a handrail to the outer periphery is performed, and a work floor curing (not shown) for spark curing is performed on the middle stage 4 and the lower stage 5. Then, various reinforcing materials are unloaded to the middle stage 4 and the lower stage 5 which have been subjected to the curing by using the lifting means 9.
【０００７】（昇降用カンヌキ式支持手段の設置）（図
２） このステップは後述するように筒状塔体２から縁を切っ
て上方や下方に移動する上記中段ステージ４と下段ステ
ージ５とを筒状塔体２に対して係止できるようにする段
階である。まず、筒状塔体２から切り離したときの形状
を保持できるようにするために、中段ステージ４と下段
ステージ５とを上記補強部材を用いて補強する。筒状塔
体２に対しては上下方向に図示しない複数の孔１４を開
ける。そして、前記孔１４に抜き差し可能に係止するカ
ンヌキ式支持手段１５を中段ステージ４、下段ステージ
５に荷揚げして設置し、カンヌキ式支持手段１５を動作
させて筒状塔体２に係止する。これによって、中段ステ
ージ４、下段ステージ５はこの時点で直接筒状塔体２に
接続されているとともに、前記カンヌキ式支持手段１５
を介して筒状塔体２に係止する状態ともなる。なお、補
強部材はカンヌキ式支持手段１５の設置位置回りにも施
す。(Installation of lifting and lowering support means) (FIG. 2) In this step, as will be described later, the middle stage 4 and the lower stage 5, which move upward or downward by cutting the edge from the cylindrical tower 2, are described. This is a stage where locking can be performed on the cylindrical tower body 2. First, the middle stage 4 and the lower stage 5 are reinforced by using the above-mentioned reinforcing member so that the shape when the tube is separated from the tubular tower 2 can be maintained. A plurality of holes (not shown) are formed in the cylindrical tower body 2 in the vertical direction. Then, the cannuki-type support means 15 which is detachably engaged with the hole 14 is unloaded and installed on the middle stage 4 and the lower stage 5, and the cannuki-type support means 15 is operated to be engaged with the tubular tower 2. . As a result, the middle stage 4 and the lower stage 5 are directly connected to the tubular tower 2 at this time, and
And the state where it is locked to the cylindrical tower body 2 via the. Note that the reinforcing member is also provided around the installation position of the cannuski type support means 15.
【０００８】（ステージ切り離し）（図３） つぎに中段ステージ４と下段ステージ５の筒状塔体２に
対する結合部分をガス切断して筒状塔体２から切り離
し、中段ステージ４と下段ステージ５それぞれをカンヌ
キ式支持手段１５を介して筒状塔体２に係止する状態と
する。(Stage Separation) (FIG. 3) Next, the portion where the middle stage 4 and the lower stage 5 are connected to the cylindrical tower 2 is cut off from the tubular tower 2 by gas cutting, and the middle stage 4 and the lower stage 5 are respectively separated. Is locked to the cylindrical tower body 2 via the cannu-type support means 15.
【０００９】（下段ステージ上昇）（図４） このステップでは、中段ステージ４に設けた牽引具と該
牽引具から降ろされた線材からなる複数の牽引手段１６
を用いて下段ステージ５を吊支し、この下段ステージ５
を中段ステージ４側に引き上げる作業を行なう。まず、
中段ステージ４に設置した前記牽引手段１６を下段ステ
ージ５に連結して吊支状態とする。そして、下段ステー
ジ５の上記カンヌキ式支持手段１５の筒状塔体２に対す
る係止を解き、下段ステージ５上方のスダレ空中線取付
金物６を取り除きながら牽引手段１６により下段ステー
ジ５を中段ステージ４側に引き上げる。さらに、下段ス
テージ５の引き上げの時点で筒状塔体２側にカンヌキ式
支持手段１５に対応する孔を順次開ける。(Lower Stage Up) (FIG. 4) In this step, a plurality of traction means 16 including a traction tool provided on the middle stage 4 and a wire rod lowered from the traction tool are used.
Is used to suspend the lower stage 5, and the lower stage 5
To the middle stage 4 side. First,
The traction means 16 installed on the middle stage 4 is connected to the lower stage 5 to be in a suspended state. Then, the lower stage 5 is disengaged from the cylindrical tower 2 with the Kannuki type support means 15 and the lower stage 5 is moved toward the middle stage 4 by the traction means 16 while removing the Sudare antenna mounting hardware 6 above the lower stage 5. Pull up. Further, when the lower stage 5 is pulled up, holes corresponding to the cannu-type support means 15 are sequentially opened in the cylindrical tower body 2 side.
【００１０】（昇降手段の設置）（図５） 上記下段ステージ５を中段ステージ４の下方に所定距離
で近接させカンヌキ式支持手段１５により筒状塔体２に
係止した状態で位置決めする。この後、上記揚重手段９
で伸縮する昇降用シリンダーからなる伸縮手段１７を荷
揚げし、この伸縮手段１７で中段ステージ４と下段ステ
ージ５とを連結する。(Installation of Elevating Means) (FIG. 5) The lower stage 5 is positioned below the middle stage 4 at a predetermined distance, and is positioned while being locked to the cylindrical tower body 2 by the Kannuki type support means 15. Thereafter, the lifting means 9
Unloads the expansion / contraction means 17 composed of an elevating cylinder which expands / contracts, and connects the middle stage 4 and the lower stage 5 with the expansion / contraction means 17.
【００１１】（中段・下段ステージの上昇）（図６） このステップでは上段ステージ３の下方から所定距離と
なる位置まで中段ステージ４と下段ステージ５とが一体
となって尺取り虫状に上昇する動作が行なわれる。中段
ステージ４と下段ステージ５との上昇は、中段ステージ
４上方のスダレ空中線取付金物６を取り除きながら、カ
ンヌキ式支持手段１５の筒状塔体２に対する係脱と上記
伸縮手段１７の伸縮とを組み合わせて行なうものであ
り、中段ステージ４と下段ステージ５とを交互に上昇さ
せるものである。例えば、下段ステージ５を筒状塔体２
に対して係止させた状態とするとともに中段ステージ４
のカンヌキ式支持手段１５の筒状塔体２に対する係止を
解除し、伸縮手段１７の伸張により中段ステージ４を上
昇させる。そして、その中段ステージ４をカンヌキ式支
持手段１５を介して筒状塔体２に係止させた状態として
から下段ステージ５の筒状塔体２に対する係止を解除
し、伸縮手段１７を縮小して下段ステージ５を上昇さ
せ、上昇した下段ステージ５を筒状塔体２に係止させ
る。この動作を繰り返すことで中段ステージ４と下段ス
テージ５を上昇させる。なお、中段ステージ４の上昇に
伴って上述したようにスダレ空中線取付金物６を取り除
くとともに、この中段ステージ４におけるカンヌキ式支
持手段１５が係止する孔を筒状塔体２に順次開けるよう
にする。(Elevation of Middle Stage / Lower Stage) (FIG. 6) In this step, the operation in which the middle stage 4 and the lower stage 5 are integrally lifted up to a position at a predetermined distance from below the upper stage 3 in a worm-like manner. Done. The lifting of the middle stage 4 and the lower stage 5 combines the disengagement of the Kannuki type support means 15 with respect to the cylindrical tower body 2 and the expansion and contraction of the expansion means 17 while removing the Sudare antenna fitting 6 above the middle stage 4. That is, the middle stage 4 and the lower stage 5 are raised alternately. For example, the lower stage 5 is connected to the cylindrical tower 2
And the middle stage 4
Is released from the cylindrical tower 2, and the middle stage 4 is raised by extension of the expansion / contraction means 17. Then, after the middle stage 4 is locked to the cylindrical tower 2 via the cannuki type support means 15, the locking of the lower stage 5 to the cylindrical tower 2 is released, and the expansion / contraction means 17 is reduced. Then, the lower stage 5 is raised, and the raised lower stage 5 is locked to the tubular tower 2. By repeating this operation, the middle stage 4 and the lower stage 5 are raised. As described above, with the rise of the middle stage 4, the Sudare antenna mounting hardware 6 is removed as described above, and the holes of the middle stage 4 to which the cannu-type support means 15 are locked are sequentially opened in the cylindrical tower body 2. .
【００１２】（上段・中段ステージ連結）（図７） 上段ステージ３の下方から所定距離に中段ステージ４が
近接した時点でこの中段ステージ４をカンヌキ式支持手
段１５を介して筒状塔体２に係止させ位置決めした状態
とする。そして、上段ステージ３と前記中段ステージ４
との間にあるスダレ空中線取付金物６に対して補強部材
１８を取り付けた状態にしてこのスダレ空中線取付金物
６により上段ステージ３と中段ステージ４とを連結し、
中段ステージ４にて上段ステージ３を支持できるように
する。また、前記上段ステージ３と中段ステージ４との
間の作業空間１９をステージ外周に亘るシート２０で囲
んで養生を行なう。(Connection of Upper Stage / Middle Stage) (FIG. 7) When the middle stage 4 approaches a predetermined distance from below the upper stage 3, the middle stage 4 is connected to the cylindrical tower 2 via the Kannuki type support means 15. It is locked and positioned. Then, the upper stage 3 and the middle stage 4
The upper stage 3 and the middle stage 4 are connected by the Sudare antenna fitting 6 with the reinforcing member 18 attached to the Sudare antenna fitting 6 located between
The upper stage 3 can be supported by the middle stage 4. In addition, the work space 19 between the upper stage 3 and the middle stage 4 is surrounded by a sheet 20 extending around the outer periphery of the stage to perform curing.
【００１３】（筒状塔体解体降下）（図８） 上記作業空間１９は筒状塔体２の解体をガス切断にて行
なう場所である。そして、この作業空間１９にある筒状
塔体２を解体し、その解体部材２１を上記揚重手段９に
て地上部に搬出する。作業空間１９の筒状塔体２を解体
すれば、つぎに中段ステージ４と下段ステージ５とを一
体にして尺取り虫状に降下させて前記作業空間１９に筒
状塔体２を位置させる。中段ステージ４と下段ステージ
５は カンヌキ式支持手段１５の筒状塔体２に対する係
脱と伸縮手段１７の伸縮とを組み合わせて行なわれ、中
段ステージ４と下段ステージ５とを交互に降下させるよ
うにしており、上述した上昇時の逆の順序で行なう。こ
のようにして順次中段ステージ４と下段ステージ５の降
下を行ない、その都度筒状塔体２の解体を作業空間１９
で行なう。これによって、筒状塔体２が順次上方から解
体されることになる。(Cylindrical tower disassembly descending) (FIG. 8) The work space 19 is a place where disassembly of the cylindrical tower 2 is performed by gas cutting. Then, the tubular tower 2 in the work space 19 is dismantled, and the dismantled member 21 is carried out to the above-ground part by the lifting means 9. When the cylindrical tower 2 in the work space 19 is disassembled, the middle stage 4 and the lower stage 5 are then integrated and lowered into a worm-like shape to position the cylindrical tower 2 in the work space 19. The middle stage 4 and the lower stage 5 are performed by combining the engagement and disengagement of the cannuki-type support means 15 with respect to the cylindrical tower body 2 and the expansion and contraction of the expansion / contraction means 17 so that the middle stage 4 and the lower stage 5 are alternately lowered. , And are performed in the reverse order of the above-described ascending. In this way, the middle stage 4 and the lower stage 5 are sequentially lowered, and each time the tubular tower 2 is dismantled in the work space 19.
Perform in. Thereby, the cylindrical tower body 2 is sequentially dismantled from above.
【００１４】（ステージ解体）（図９） 上段ステージ３、中段ステージ４、下段ステージ５が上
記手順により地上部まで降りてきたのちには、地上部に
配置のレッカーなどの揚重装置２２を用いながら各ステ
ージを解体し、これによって鋼製鉄塔１の解体が完了す
る。(Stage Disassembly) (FIG. 9) After the upper stage 3, the middle stage 4, and the lower stage 5 have descended to the ground by the above procedure, a lifting device 22 such as a wrecker disposed on the ground is used. Each stage is dismantled while the dismantling of the steel tower 1 is completed.
【００１５】[0015]
【発明の効果】以上説明した本発明により、大型の揚重
機機を用いなくとも鋼製鉄塔の解体が行なえるようにな
るため、山間部に立設された鋼製鉄塔を解体する場合で
もその鋼製鉄骨の回りの自然環境に対する影響を最小限
に抑えることができるようになる。また、解体に際して
大量のガス切断を行なうことになるが、シートにより覆
われて養生された作業空間で行なうために安全な作業と
なる。さらに、筒状塔体の内底部に水を溜めできる構成
としたことから、筒状塔体の内底部に水を溜めておき、
この筒状塔体を解体するガス切断に際して火花が筒状塔
体の内方に飛ばすことで、内底部の貯まり水で火花が完
全に消されるようになり、安全な防火対策を低コストで
構成できるようになる。そして、鋼製鉄塔自体が備えて
いるステージを解体に伴って移動する作業場所としてい
るため、解体に係る特殊な仮設設備を最小限に抑えて解
体費用を削減できるなど、実用性に優れた効果を奏する
ものである。According to the present invention described above, the steel tower can be dismantled without using a large lifting machine, so that even when dismantling a steel tower standing uphill, The impact on the natural environment around the steel structure can be minimized. Further, a large amount of gas cutting is performed at the time of disassembly, but it is a safe operation since it is performed in a work space covered with sheets and cured. Furthermore, since it was configured to be able to store water at the inner bottom of the cylindrical tower, water was stored at the inner bottom of the cylindrical tower,
Sparks fly inside the tubular tower during gas cutting when dismantling the tubular tower, so that the sparks are completely extinguished by the water stored in the inner bottom, making safe fire prevention measures at low cost. become able to. In addition, the stage provided by the steel tower itself is used as a work place to move along with the demolition, so special temporary facilities related to demolition can be minimized and the cost of demolition can be reduced. Is played.
【図１】本発明に係る鋼製鉄塔の解体方法の一例におけ
る解体段取りのステップを示す説明図である。FIG. 1 is an explanatory diagram showing steps of dismantling setup in one example of a dismantling method of a steel steel tower according to the present invention.
【図２】一例における昇降用カンヌキ式支持手段の設置
のステップを示す説明図である。FIG. 2 is an explanatory view showing a step of installing an ascending and descending supporting device in one example.
【図３】ステージ切り離しのステップを示す説明図であ
る。FIG. 3 is an explanatory view showing a stage separation step.
【図４】下段ステージ上昇のステップを示す説明図であ
る。FIG. 4 is an explanatory diagram showing a step of raising a lower stage.
【図５】昇降手段の設置のステップを示す説明図であ
る。FIG. 5 is an explanatory diagram showing steps of setting up and down means.
【図６】中段・下段ステージ上昇のステップを示す説明
図である。FIG. 6 is an explanatory diagram showing steps of raising the middle and lower stages.
【図７】上段・中段ステージ連結のステップを示す説明
図である。FIG. 7 is an explanatory view showing steps of connecting the upper stage and the middle stage.
【図８】筒状塔体解体降下のステップを示す説明図であ
る。FIG. 8 is an explanatory view showing a step of dismantling and lowering the cylindrical tower body.
【図９】ステージ解体のステップを示す説明図である。FIG. 9 is an explanatory diagram showing steps of stage disassembly.
１…鋼製鉄塔 ２…筒状塔体 ３…上段ステージ ４…中段ステージ ５…下段ステージ ６…スダレ空中線取付金物 ９…揚重手段 １１…屋根シート １３…手摺り付け外周養生 １５…カンヌキ式支持手段 １６…牽引手段 １７…伸縮手段 １８…補強部材 １９…作業空間 ２０…シート ２１…解体部材 DESCRIPTION OF SYMBOLS 1 ... Steel steel tower 2 ... Cylindrical tower body 3 ... Upper stage 4 ... Middle stage 5 ... Lower stage 6 ... Sudare antenna mounting hardware 9 ... Lifting means 11 ... Roof sheet 13 ... Handrailing outer peripheral curing 15 ... Kannuki type support Means 16 ... Traction means 17 ... Expansion / contraction means 18 ... Reinforcing member 19 ... Work space 20 ... Seat 21 ... Dismantling member
Claims (1)
段ステージが該筒状塔体の上端に位置しているととも
に、前記筒状塔体の周囲に設けられている中段ステージ
と下段ステージとが前記上段ステージから下方にそれぞ
れ間隔をおいて順に位置し、前記筒状塔体の上下方向に
亘ってスダレ空中線取付金物が設けられている鋼製鉄塔
を解体するにあたり、 前記筒状塔体に雨水を送り込む屋根シートとウィンチか
らなる揚重手段を上段ステージに設け、 前記中段ステージと下段ステージとに筒状塔体に開けた
孔に抜き差し可能に係止するカンヌキ式支持手段を設け
て、該中段ステージと下段ステージとを、前記カンヌキ
式支持手段を介して筒状塔体に係止させた状態で筒状塔
体から切り離し、 前記中段ステージに設けた牽引手段で前記下段ステージ
を吊支して下段ステージにおける前記カンヌキ式支持手
段の筒状塔体に対する係止を解き、下段ステージ上方の
スダレ空中線取付金物を取り除きながら前記牽引手段に
より下段ステージを中段ステージ側に引き上げ、 中段ステージとこの中段ステージに接近して前記カンヌ
キ式支持手段を介して筒状塔体に係止した下段ステージ
とを、昇降用シリンダーからなる伸縮手段により連結
し、 中段ステージ上方のスダレ中空線取付金物を取り除きな
がら、前記カンヌキ式支持手段の筒状塔体に対する係脱
と前記伸縮手段の伸縮とにより中段ステージと下段ステ
ージとを交互に上昇させ、 上段ステージと該上段ステージに近接した中段ステージ
とをスダレ空中線取付金物に取り付けた補強部材を介し
て連結して、中段ステージで前記上段ステージを支持
し、 前記上段ステージと中段ステージとの間の作業空間をス
テージ外周に亘るシートで囲み、 カンヌキ式支持手段の筒状塔体に対する係脱と伸縮手段
の伸縮とにより中段ステージと下段ステージとを交互に
降下させながら、前記作業空間での筒状塔体の解体と前
記揚重手段による解体部材の搬出とを行なうことを特徴
とする鋼製鉄塔の解体方法。An upper stage provided around a steel cylindrical tower body is located at an upper end of the cylindrical tower body, and a middle stage provided around the cylindrical tower body. In disassembling the steel tower in which the lower stage and the lower stage are sequentially positioned at intervals below the upper stage and are provided with a Sudare antenna mounting hardware over the vertical direction of the cylindrical tower body, A lifting means comprising a roof sheet and a winch for sending rainwater into the tubular tower body is provided on the upper stage, and the middle stage and the lower stage are provided with cannuki-type supporting means which are detachably engaged with holes formed in the tubular tower body. The middle stage and the lower stage are separated from the cylindrical tower body while being locked to the cylindrical tower body via the Kannuki-type support means, and the lower stage is provided by the traction means provided on the middle stage. The lower stage is lifted to the middle stage side by the traction means while removing the lock on the cylindrical tower of the cannuki type support means in the lower stage by suspending the lower stage and removing the Sudare antenna mounting hardware above the lower stage, The middle stage and the lower stage approaching the middle stage and being locked to the tubular tower via the Kannuki-type support means are connected by a telescopic means comprising a lifting cylinder, and a hollow wire above the middle stage is attached. While removing the hardware, the middle stage and the lower stage are alternately raised by the engagement and disengagement of the Kannuki type support means with respect to the cylindrical tower body and the expansion and contraction of the expansion and contraction means, and the upper stage and the middle stage close to the upper stage. Are connected via a reinforcing member attached to the Sudare antenna mounting hardware, and the upper stage The work space between the upper stage and the middle stage is surrounded by a sheet extending around the outer periphery of the stage, and the middle stage and the lower stage are formed by engaging and disengaging the cannuki-type support means with respect to the cylindrical tower body and expanding and contracting the extendable means. Dismantling the cylindrical tower body in the work space and carrying out the dismantling member by the lifting means while alternately lowering the steel tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001008000A JP3707005B2 (en) | 2001-01-16 | 2001-01-16 | Steel tower demolition method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001008000A JP3707005B2 (en) | 2001-01-16 | 2001-01-16 | Steel tower demolition method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002213086A true JP2002213086A (en) | 2002-07-31 |
| JP3707005B2 JP3707005B2 (en) | 2005-10-19 |
Family
ID=18875664
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001008000A Expired - Fee Related JP3707005B2 (en) | 2001-01-16 | 2001-01-16 | Steel tower demolition method |
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| Country | Link |
|---|---|
| JP (1) | JP3707005B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7445540B2 (en) | 2020-06-23 | 2024-03-07 | 山九株式会社 | Device to prevent spark scattering during gas cutting and method for dismantling towers and tanks |
-
2001
- 2001-01-16 JP JP2001008000A patent/JP3707005B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7445540B2 (en) | 2020-06-23 | 2024-03-07 | 山九株式会社 | Device to prevent spark scattering during gas cutting and method for dismantling towers and tanks |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3707005B2 (en) | 2005-10-19 |
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