JP2000008649A - Vibration suppression structure of tower construction - Google Patents
Vibration suppression structure of tower constructionInfo
- Publication number
- JP2000008649A JP2000008649A JP10181286A JP18128698A JP2000008649A JP 2000008649 A JP2000008649 A JP 2000008649A JP 10181286 A JP10181286 A JP 10181286A JP 18128698 A JP18128698 A JP 18128698A JP 2000008649 A JP2000008649 A JP 2000008649A
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- JP
- Japan
- Prior art keywords
- cylindrical body
- cylindrical
- vibration
- wall
- 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.)
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- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、風などによる塔状
構造物の振動を低減する振動抑制構造に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration suppressing structure for reducing vibration of a tower-like structure due to wind or the like.
【０００２】[0002]
【従来の技術】煙突、送電線鉄塔、飛行場の管制塔、縦
長のビルなどの塔状構造物は、風による振動すなわちカ
ルマン渦に起因する振動が発生し易い構造物である。2. Description of the Related Art Tower-like structures such as chimneys, transmission line towers, airfield control towers, and vertically long buildings are structures in which vibrations caused by wind, that is, vibrations caused by Karman vortices are easily generated.
【０００３】この種の塔状構造物の内、例えば、複数本
の筒身を有する煙突においては、同形状でかつ円筒状の
筒身を複数本それぞれ所定間隔をおいて地面上に並行に
設置しており、各筒身を連結部材で連結し一体化してい
る。[0003] In this type of tower-like structure, for example, in a chimney having a plurality of tubular bodies, a plurality of cylindrical tubular bodies having the same shape are installed in parallel on the ground at predetermined intervals. The respective cylinder bodies are connected by a connecting member to be integrated.
【０００４】[0004]
【発明が解決しようとする課題】上記した従来の構成に
よると、水平方向の風が各筒身に当たると、各筒身の風
下側にカルマン渦現象が起こる。上記各筒身には、この
カルマン渦に起因して風と直角方向の変動外力すなわち
振動が発生するとともに、各筒身に発生するカルマン渦
の相互干渉作用も加わることで、上記振動がさらに大き
くなるという問題がある。According to the above-mentioned conventional structure, when a horizontal wind hits each cylinder, a Karman vortex phenomenon occurs on the leeward side of each cylinder. The above-mentioned cylinder bodies generate a fluctuating external force or vibration in a direction perpendicular to the wind due to the Karman vortex, and the cross-interaction of the Karman vortices generated in the respective cylinder bodies further increases the vibration. Problem.
【０００５】本発明は、複数本の筒身本体を並行に設置
して成る塔状構造物において、振動を効果的に抑制する
ことができる塔状構造物の振動抑制構造を提供すること
を目的とするものである。SUMMARY OF THE INVENTION An object of the present invention is to provide a tower-like structure having a plurality of cylindrical bodies installed in parallel, and a vibration-suppressing structure for the tower-like structure capable of effectively suppressing vibration. It is assumed that.
【０００６】[0006]
【課題を解決するための手段】上記した課題を解決する
ために、本発明の塔状構造物の振動抑制構造は、複数本
の筒身本体を並行に設置して成る塔状構造物であって、
任意の筒身本体の内壁の厚さを、上下方向の所定間隔置
きに順次変化させるとともに、残りの筒身本体の内、所
定の筒身本体の内壁の厚さを、上記任意の筒身本体の内
壁の厚さとは逆方向に変化させたものである。Means for Solving the Problems In order to solve the above-mentioned problems, a vibration suppressing structure for a tower-like structure according to the present invention is a tower-like structure comprising a plurality of cylindrical bodies installed in parallel. hand,
The thickness of the inner wall of the arbitrary cylindrical body is sequentially changed at predetermined intervals in the vertical direction, and the thickness of the inner wall of the predetermined cylindrical body among the remaining cylindrical bodies is changed to the thickness of the arbitrary cylindrical body. The thickness of the inner wall is changed in the opposite direction.
【０００７】また、筒身本体の外壁を多角形の筒状に構
成するとともに、多角形の各頂部を上下方向で結ぶ各稜
線を、それぞれ螺旋状に傾斜させたものである。上記各
構成によると、筒身本体の内壁の厚さの違いから筒身本
体の剛性の高低差を生起し、この筒身本体の剛性の高低
差に起因して、各筒身本体の固有振動数を異なるように
変化させる。したがって風による振動すなわち各筒身本
体に発生するカルマン渦による起振力に位相差を持たせ
ることができ、これにより、筒身本体同士で振動抑制効
果を生み、以ってカルマン渦に起因する振動を効果的に
減衰させることができる。Further, the outer wall of the tubular body is formed in a polygonal tubular shape, and each ridge line connecting the tops of the polygon in the vertical direction is spirally inclined. According to each of the above configurations, the difference in the thickness of the inner wall of the tubular body causes a difference in the rigidity of the tubular body, and the natural vibration of each tubular body is caused by the difference in the rigidity of the tubular body. Vary the numbers differently. Therefore, it is possible to impart a phase difference to the vibration caused by the wind, that is, the vibrating force generated by the Karman vortex generated in each of the barrel bodies, thereby producing a vibration suppression effect between the barrel bodies, thereby resulting from the Karman vortex. Vibration can be effectively attenuated.
【０００８】[0008]
【発明の実施の形態】以下に、本発明の実施の形態にお
ける振動抑制構造を塔状構造物である煙突に適用した状
態として図面に基づいて説明する。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a state in which a vibration suppressing structure according to an embodiment of the present invention is applied to a chimney which is a tower-like structure.
【０００９】塔状構造物の振動抑制構造は、上方に立設
する複数本の筒身本体を地面上に並行に設置して成る塔
状構造物において、任意の筒身本体の内壁の厚さを、上
下方向の所定間隔置きに順次変化させるとともに、残り
の筒身本体の内、所定の筒身本体の内壁の厚さを、上記
任意の筒身本体の内壁の厚さとは逆方向に変化させ、ま
た、筒身本体の外壁を多角形の筒状に構成するととも
に、多角形の各頂部を上下方向で結ぶ各稜線を、それぞ
れ螺旋状に傾斜させたことで、各筒身本体の剛性の高低
差に起因して各筒身本体の固有振動数を変化させ、風に
よる振動すなわち各筒身本体に発生するカルマン渦によ
る起振力に位相差を持たせることができ、また、カルマ
ン渦の発生点が高さ位置に応じて周方向でずらされ、各
筒身本体に発生するカルマン渦による起振力に、位相の
ずれを持たせることができる。したがって起振力の位相
差による各筒身本体の振動抑制効果と、位相のずれによ
る各筒身本体の振動抑制効果とにより、カルマン渦に起
因する振動を効果的に減衰させることができる。[0009] The vibration suppressing structure for a tower-like structure is provided in a tower-like structure having a plurality of cylindrical bodies erected upward and arranged in parallel on the ground, and the thickness of the inner wall of the arbitrary cylindrical body is varied. Is sequentially changed at predetermined intervals in the vertical direction, and of the remaining cylindrical bodies, the thickness of the inner wall of the predetermined cylindrical body is changed in a direction opposite to the thickness of the inner wall of the arbitrary cylindrical body. In addition, the outer wall of the cylindrical body is formed in a polygonal cylindrical shape, and the ridges connecting the tops of the polygon in the vertical direction are each spirally inclined, so that the rigidity of each cylindrical body is increased. By changing the natural frequency of each cylinder body due to the height difference of the cylinder body, it is possible to give a phase difference to the vibration caused by the wind, that is, the vibrating force generated by the Karman vortex generated in each cylinder body, and the Karman vortex Point is shifted in the circumferential direction according to the height position, and occurs on each cylinder body The excitation force by mans vortex, can have a phase shift. Therefore, the vibration caused by the Karman vortex can be effectively attenuated by the vibration suppressing effect of each cylindrical body due to the phase difference of the vibrating force and the vibration suppressing effect of each cylindrical body due to the phase shift.
【００１０】すなわち図１〜図５に示すように、本発明
の第１の実施の形態における塔状構造物である煙突１
は、上方に立設する２本の筒身本体２，３を、地面上の
基礎台２ａ，３ａの上部に並行に設置して成り、双方の
筒身本体２，３は、それらの上部側に設けた連結部材４
により一体に構成されている。That is, as shown in FIGS. 1 to 5, a chimney 1 which is a tower-like structure according to a first embodiment of the present invention.
Consists of two cylindrical bodies 2, 3 standing upright, which are installed in parallel on top of bases 2a, 3a on the ground, and both cylindrical bodies 2, 3 are arranged on their upper sides. Connecting member 4 provided in
Are integrally formed.
【００１１】上記一方の筒身本体２は、円筒状の骨組構
造体５，６，７，８，９を下方から順次上方に連結して
成り、各骨組構造体５〜８は、その外径寸法および高さ
寸法を同一に形成してある。各骨組構造体５〜９の外周
に外壁部材１０を設けており、各骨組構造体５〜９およ
び外壁部材１０の内周面には、上下方向に沿って円筒状
の煙道を構成するためのライニング部材１１〜１５をそ
れぞれ設けている。The one cylindrical body 2 is formed by sequentially connecting cylindrical frame structures 5, 6, 7, 8, 9 upward from below, and each frame structure 5 to 8 has an outer diameter. The dimensions and height dimensions are identical. An outer wall member 10 is provided on the outer periphery of each of the skeleton structures 5 to 9, and an inner peripheral surface of each of the skeleton structures 5 to 9 and the outer wall member 10 forms a cylindrical flue along the vertical direction. Are provided, respectively.
【００１２】上記ライニング部材１１〜１４の層厚さｔ
11〜ｔ14は、各ライニング部材毎に一定の厚さにされて
いるとともに、下方のライニング部材１１から上方のラ
イニング部材１４に向けて、その層厚さ（ｔ11〜ｔ14）
が順次薄くなるようにされている。すなわち一方の筒身
本体２の内壁が、実質的に下方から上方へ向けて順次薄
肉構造となり、これにより一方の筒身本体２の剛性を高
くしている。The layer thickness t of the lining members 11 to 14
11 ~t 14, together they are the constant thickness for each lining member from below of the lining member 11 upward of the lining member 14, the layer thickness (t 11 ~t 14)
Are sequentially thinned. In other words, the inner wall of one tubular body 2 has a substantially thinner structure from substantially downward to upward, thereby increasing the rigidity of one tubular body 2.
【００１３】上記他方の筒身本体３は、一方の筒身本体
２と同一高さに設けられ、この筒身本体２と同様に、円
筒状の各骨組構造体１６，１７，１８，１９，２０を下
方から順次上方に連結して成る。各骨組構造体１６〜１
９は、上記各骨組構造体５〜８の外径寸法および高さ寸
法とそれぞれ同一に形成してあり、各骨組構造体１６〜
２０の外周に外壁部材２１を設けている。すなわち他方
の筒身本体３と、一方の筒身本体２とは、外観上におい
て、同一高さでかつ同一形状に構成されている。各骨組
構造体１６〜２０および外壁部材２１の内周面には、上
下方向に沿って円筒状の煙道を構成するためのライニン
グ部材２２〜２６をそれぞれ設けている。The other tubular body 3 is provided at the same height as the one tubular body 2, and like the tubular body 2, each of the cylindrical frame structures 16, 17, 18, 19, and 20 are sequentially connected from the bottom to the top. Each frame structure 16-1
9 is formed to be the same as the outer diameter dimension and the height dimension of each of the above-mentioned frame structures 5 to 8, respectively.
An outer wall member 21 is provided on the outer periphery of 20. That is, the other cylindrical body 3 and the one cylindrical body 2 are configured to have the same height and the same shape in appearance. Lining members 22 to 26 are provided on the inner peripheral surface of each of the frame structures 16 to 20 and the outer wall member 21 to form a cylindrical flue along the vertical direction.
【００１４】上記ライニング部材２２〜２５の層厚さｔ
22〜ｔ25は、各ライニング部材毎に一定の厚さにされて
いるとともに、下方のライニング部材２２から上方のラ
イニング部材２５に向けて、その層厚さ（ｔ22〜ｔ25）
が順次厚くなるようにされている。すなわち他方の筒身
本体３の内壁が、実質的に下方から上方に向けて順次厚
肉構造となり、これにより他方の筒身本体３の剛性を低
くしている。The layer thickness t of the lining members 22 to 25
22 ~t 25, together they are the constant thickness for each lining member from below of the lining member 22 upward of the lining member 25, the layer thickness (t 22 ~t 25)
Are sequentially thickened. That is, the inner wall of the other cylindrical body 3 has a substantially thicker structure from substantially downward to upward, thereby reducing the rigidity of the other cylindrical body 3.
【００１５】上記構成によると、水平方向の風が煙突１
に当たると、一方の筒身本体２と他方の筒身本体３の風
下側にカルマン渦が発生する。しかし、各筒身本体２，
３の剛性の高低差に起因して各筒身本体２，３の固有振
動数を互いに異なるように変化させ、風による振動すな
わち一方の筒身本体２と他方の筒身本体３に発生するカ
ルマン渦による起振力に位相差を持たせることができ、
これにより、一方の筒身本体２と他方の筒身本体３とで
振動抑制効果を生み、以ってカルマン渦に起因する振動
を効果的に減衰させることができる。According to the above configuration, the wind in the horizontal direction is
, Karman vortices are generated on the leeward side of one tubular body 2 and the other tubular body 3. However, each cylinder body 2,
The natural frequency of each of the tubular bodies 2 and 3 is changed to be different from each other due to the height difference of the rigidity of the tubular body 3, and vibration caused by wind, that is, Kalman generated in one tubular body 2 and the other tubular body 3 A phase difference can be given to the vibrating force generated by the vortex,
Thereby, a vibration suppression effect is produced by the one barrel body 2 and the other barrel body 3, whereby the vibration caused by the Karman vortex can be effectively attenuated.
【００１６】次に、本発明の第２の実施の形態における
振動抑制構造を塔状構造物である煙突に適用した状態と
して図面に基づいて説明する。先に図１〜図５において
説明したものと同様の作用を行う部材については同一番
号を付して説明を省略する。Next, a state in which the vibration suppressing structure according to the second embodiment of the present invention is applied to a chimney which is a tower-like structure will be described with reference to the drawings. Members performing the same operations as those described above with reference to FIGS. 1 to 5 are denoted by the same reference numerals, and description thereof is omitted.
【００１７】すなわち図６〜図９に示すように、第２の
実施の形態における塔状構造物である煙突３０は、上方
に立設する２本の筒身本体３１，３２を基礎台２ａ，３
ａの上部に並行に設置して成り、双方の筒身本体３１，
３２は、連結部材４により一体に構成されている。That is, as shown in FIGS. 6 to 9, a chimney 30, which is a tower-like structure according to the second embodiment, includes two tubular main bodies 31, 32 standing upright on a base 2a, 3
a, which are installed in parallel on the upper part of
32 is integrally formed by the connecting member 4.
【００１８】上記一方の筒身本体３１は、下方から順次
上方に連結した八角形の筒状骨組構造体３３〜４０と、
各筒状骨組構造体３３〜４０の外周に沿って複数設けた
外壁部材４１とを有しており、各外壁部材４１をそれぞ
れ螺旋状に傾斜させている。従って、外壁部材４１は、
水平断面視で八角形に形成され、各外壁部材４１の継な
ぎ目である各稜線４１ａは、それぞれ螺旋状に傾斜させ
られることになる。The one tubular main body 31 includes octagonal tubular frame structures 33 to 40 sequentially connected upward from below.
A plurality of outer wall members 41 are provided along the outer periphery of each of the tubular frame structures 33 to 40, and each of the outer wall members 41 is spirally inclined. Therefore, the outer wall member 41 is
Each ridgeline 41a, which is formed in an octagonal shape in a horizontal sectional view and is a joint between the outer wall members 41, is spirally inclined.
【００１９】上記各筒状骨組構造体３３〜４０は、その
外径寸法および高さ寸法を同一に形成しており、各筒状
骨組構造体３３〜４０および外壁部材４１の内周面に
は、上下方向に沿って円筒状の煙道を構成するためのラ
イニング部材４２〜４９をそれぞれ設けている。The cylindrical frame structures 33 to 40 have the same outer diameter and the same height, and the inner peripheral surfaces of the cylindrical frame structures 33 to 40 and the outer wall member 41 And lining members 42 to 49 for forming a cylindrical flue along the vertical direction.
【００２０】上記ライニング部材４２〜４９の層厚さｔ
42〜ｔ49は、各ライニング部材毎に一定の厚さにされて
いるとともに、下方のライニング部材４２から上方のラ
イニング部材４９に向けて、その層厚さ（ｔ42〜ｔ49）
が順次薄くなるようにされている。すなわち一方の筒身
本体３１の内壁が、実質的に下方から上方に向けて順次
薄肉構造となり、これにより一方の筒身本体３１の剛性
を高くしている。The thickness t of the lining members 42 to 49
42 ~t 49, together they are the constant thickness for each lining member from below of the lining member 42 upward of the lining member 49, the layer thickness (t 42 ~t 49)
Are sequentially thinned. That is, the inner wall of one tubular main body 31 has a substantially thinner structure from substantially downward to upward, thereby increasing the rigidity of one tubular main body 31.
【００２１】上記他方の筒身本体３２は、一方の筒身本
体３１と同一高さに設けられ、この筒身本体３１と同様
に、八角形の筒状骨組構造体５０〜５７を下方から順次
上方に連結して成る。各筒状骨組構造体５０〜５７は、
上記筒状骨組構造体３３〜４０の外径寸法および高さ寸
法とそれぞれ同一に形成してあり、各筒状骨組構造体５
０〜５７の外周に沿って外壁部材４１を螺旋状に複数設
けている。すなわち他方の筒身本体３２と一方の筒身本
体３１とは、外観上において、同一高さでかつ同一形状
に構成されている。各筒状骨組構造体５０〜５７および
外壁部材４１の内周面には、上下方向に沿って円筒状の
煙道を構成するためのライニング部材５８〜６５をそれ
ぞれ設けている。The other tubular body 32 is provided at the same height as the one tubular body 31. Similarly to the tubular body 31, the octagonal tubular frame structures 50 to 57 are sequentially arranged from below. It is connected upward. Each of the tubular frame structures 50 to 57 includes:
Each of the tubular frame structures 33 to 40 is formed to have the same outer diameter and height as the cylindrical frame structures 33 to 40.
A plurality of outer wall members 41 are provided spirally along the outer circumference of 0 to 57. That is, the other tubular body 32 and the one tubular body 31 are configured to have the same height and the same shape in appearance. Lining members 58 to 65 are provided on the inner peripheral surface of each of the tubular frame structures 50 to 57 and the outer wall member 41 to form a cylindrical flue along the vertical direction.
【００２２】上記ライニング部材５８〜６５の層厚さｔ
58〜ｔ65は、各ライニング部材毎に一定の厚さにされて
いるとともに、下方のライニング部材５８から上方のラ
イニング部材６５に向けて、その層厚さ（ｔ58〜ｔ65）
が順次厚くなるようにされている。すなわち他方の筒身
本体３２の内壁が、実質的に下方から上方に向けて順次
厚肉構造となり、これにより他方の筒身本体３２の剛性
を低くしている。The layer thickness t of the lining members 58 to 65
58 ~t 65, together they are the constant thickness for each lining member from below of the lining member 58 upward of the lining member 65, the layer thickness (t 58 ~t 65)
Are sequentially thickened. That is, the inner wall of the other cylindrical body 32 has a substantially thicker structure from substantially downward to upward, thereby reducing the rigidity of the other cylindrical body 32.
【００２３】上記構成によると、水平方向の風が煙突３
０に当たると、一方の筒身本体３１と他方の筒身本体３
２の風下側にカルマン渦が発生する。しかし、各筒身本
体３１，３２の剛性の高低差に起因して各筒身本体３
１，３２の固有振動数を異なるように変化させること
で、風による振動すなわち一方の筒身本体３１と他方の
筒身本体３２とに発生するカルマン渦による起振力に位
相差を持たせることができる。また、各筒身本体３１，
３２の稜線４１ａが螺旋状に傾斜しているので、カルマ
ン渦の発生点が高さ位置に応じて周方向でずらされ、各
筒身本体３１，３２に発生するカルマン渦による起振力
に、位相のずれを持たせることができる。したがって起
振力の位相差による一方の筒身本体３１と他方の筒身本
体３２との振動抑制効果と、位相のずれによる各筒身本
体３１，３２の振動抑制効果とにより、カルマン渦に起
因する煙突３０の振動をより効果的に減衰させている。According to the above configuration, the wind in the horizontal direction is
0, one of the tubular body 31 and the other tubular body 3
Karman vortex is generated on the leeward side of No. 2. However, due to the difference in the rigidity between the tubular bodies 31 and 32, each tubular body 3
By changing the natural frequencies of the first and second tubes 32 differently, a phase difference is caused between the vibration caused by the wind, that is, the vibrating force generated by the Karman vortex generated in one tubular body 31 and the other tubular body 32. Can be. In addition, each tubular body 31,
Since the ridgeline 41a of 32 is spirally inclined, the point of occurrence of Karman vortex is shifted in the circumferential direction according to the height position, and the vibrating force due to Karman vortex generated in each of the tubular bodies 31, 32 is reduced. A phase shift can be provided. Therefore, due to the effect of suppressing vibration of one cylindrical body 31 and the other cylindrical body 32 due to the phase difference of the vibrating force and the effect of suppressing the vibration of each cylindrical body 31 and 32 due to the phase shift, it is caused by Karman vortex. The vibration of the chimney 30 is effectively attenuated.
【００２４】上記各実施の形態においては、一方の筒身
本体と他方の筒身本体をそれぞれ立設したが、上記各筒
身本体に加えてさらに別の筒身本体を１本または複数本
立設してもよく、また、上記した３本目以上の筒身本体
についても、ライニング部材の層厚さが変化させられ
る。なお、３本目以上の筒身本体は、ライニング部材の
層厚さを上下方向に亘って変化させない場合もあり得
る。In each of the above embodiments, one cylindrical body and the other cylindrical body are erected, but one or more other cylindrical bodies are erected in addition to the cylindrical bodies. Alternatively, the layer thickness of the lining member may be changed for the third or more tubular main bodies described above. In the third or more cylindrical body, the layer thickness of the lining member may not be changed in the vertical direction.
【００２５】上記各実施の形態においては、各筒身本体
に設けたライニング部材の厚みをそれぞれ変化させた
が、各筒身本体に内壁面をそれぞれ設け、この内壁面の
厚さを変化させる形態であってもよい。In each of the above embodiments, the thickness of the lining member provided on each tubular body is changed, but the inner wall surface is provided on each tubular body, and the thickness of the inner wall is changed. It may be.
【００２６】上記各実施の形態においては、各ライニン
グ部材の層厚さを、各ライニング部材毎に一定の厚さに
しているが、全骨組構造体または全筒状骨組構造体およ
び外壁部材の内周面の上下方向に沿って、テーパ状の層
厚さを有するライニング部材を設け、かつ、一方の筒身
本体と他方の筒身本体とでそれぞれテーパの勾配の向き
を逆向きに変化させる形態であってもよい。In the above embodiments, the layer thickness of each lining member is set to a constant thickness for each lining member. However, in the entire frame structure or the entire cylindrical frame structure and the outer wall member, A form in which a lining member having a tapered layer thickness is provided along the vertical direction of the peripheral surface, and the direction of the gradient of the taper is changed in the opposite direction between one cylindrical body and the other cylindrical body. It may be.
【００２７】上記第２の実施の形態においては、多角形
の筒状骨組構造体および外壁部材として、八角形の筒状
骨組構造体および外壁部材を適用したが、この多角形の
角数は、外壁部材の螺旋形状を損なわない限り、任意の
数を適用できる。In the second embodiment, the octagonal tubular frame structure and the outer wall member are applied as the polygonal tubular frame structure and the outer wall member. Any number can be applied as long as the spiral shape of the outer wall member is not impaired.
【００２８】[0028]
【発明の効果】以上述べたように、本発明によれば、各
筒身本体の剛性の高低差に起因して各筒身本体の固有振
動数を異なるように変化させることで、風による振動す
なわち一方の筒身本体と他方の筒身本体とに発生するカ
ルマン渦による起振力に位相差を持たせることができ、
この起振力の位相差により、一方の筒身本体と他方の筒
身本体との間で振動抑制効果を生み、以ってカルマン渦
に起因する塔状構造物の振動を効果的に減衰させること
ができる。As described above, according to the present invention, by changing the natural frequency of each tubular body differently due to the difference in the rigidity of each tubular body, the vibration caused by wind is improved. That is, it is possible to give a phase difference to the vibrating force generated by the Karman vortex generated in one cylindrical body and the other cylindrical body,
Due to the phase difference of the vibrating force, a vibration suppressing effect is produced between one cylindrical body and the other cylindrical body, and thus the vibration of the tower-like structure caused by the Karman vortex is effectively attenuated. be able to.
【００２９】また、各筒身本体の稜線が螺旋状に傾斜し
ているので、カルマン渦の発生点が高さ位置に応じて周
方向でずらされ、各筒身本体に発生するカルマン渦によ
る起振力に、位相のずれを持たせることができ、この位
相のずれによる各筒身本体の振動抑制効果により、カル
マン渦に起因する塔状構造物の振動をより効果的に減衰
させることができる。Since the ridgeline of each tubular body is spirally inclined, the point of occurrence of the Karman vortex is shifted in the circumferential direction according to the height position, and the Karman vortex generated in each tubular body is shifted. Vibration force can be provided with a phase shift, and the vibration of each tower body caused by this phase shift can be more effectively attenuated due to the Karman vortex. .
【図１】本発明の第１の実施の形態における振動抑制構
造を塔状構造物に適用した状態を示す一部切欠正面図で
ある。FIG. 1 is a partially cutaway front view showing a state where a vibration suppressing structure according to a first embodiment of the present invention is applied to a tower-like structure.
【図２】図１におけるＡ−Ａ断面図である。FIG. 2 is a sectional view taken along line AA in FIG.
【図３】図１におけるＢ−Ｂ断面図である。FIG. 3 is a sectional view taken along line BB in FIG.
【図４】図１におけるＣ−Ｃ断面図である。FIG. 4 is a sectional view taken along line CC in FIG.
【図５】図１におけるＤ−Ｄ断面図である。FIG. 5 is a sectional view taken along line DD in FIG.
【図６】発明の第２の実施の形態における振動抑制構造
を塔状構造物に適用した状態を示す一部切欠正面図であ
る。FIG. 6 is a partially cutaway front view showing a state in which a vibration suppressing structure according to a second embodiment of the invention is applied to a tower-like structure.
【図７】図６におけるＥ−Ｅ断面図である。FIG. 7 is a sectional view taken along the line EE in FIG. 6;
【図８】図６におけるＦ−Ｆ断面図である。FIG. 8 is a sectional view taken along line FF in FIG. 6;
【図９】図６におけるＧ−Ｇ断面図である。FIG. 9 is a sectional view taken along the line GG in FIG. 6;
１ 煙突 ２ 筒身本体 ３ 筒身本体 １１〜１５ ライニング部材 ｔ 層厚さ ２２〜２６ ライニング部材 ３０ 煙突 ３１ 筒身本体 ３２ 筒身本体 ４１ａ 稜線 ４２〜４９ ライニング部材 ５８〜６５ ライニング部材 REFERENCE SIGNS LIST 1 chimney 2 tubular body 3 tubular body 11 to 15 lining member t layer thickness 22 to 26 lining member 30 chimney 31 barrel body 32 tubular body body 41 a ridge 42 to 49 lining member 58 to 65 lining member
───────────────────────────────────────────────────── フロントページの続き (72)発明者 白井 秀治 大阪府大阪市住之江区南港北１丁目７番89 号 日立造船株式会社内 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Hideharu Shirai 1-7-89 Minami Kohoku, Suminoe-ku, Osaka-shi, Osaka Inside Hitachi Zosen Corporation
Claims (2)
塔状構造物であって、 任意の筒身本体の内壁の厚さを、上下方向の所定間隔置
きに順次変化させるとともに、残りの筒身本体の内、所
定の筒身本体の内壁の厚さを、上記任意の筒身本体の内
壁の厚さとは逆方向に変化させたことを特徴とする塔状
構造物の振動抑制構造。1. A tower-like structure comprising a plurality of cylindrical bodies arranged in parallel, wherein the thickness of the inner wall of an arbitrary cylindrical body is sequentially changed at predetermined intervals in a vertical direction, Vibration suppression of a tower-like structure, characterized in that the thickness of the inner wall of a predetermined cylindrical body is changed in a direction opposite to the thickness of the inner wall of the arbitrary cylindrical body among the remaining cylindrical bodies. Construction.
るとともに、多角形の各頂部を上下方向で結ぶ各稜線
を、それぞれ螺旋状に傾斜させたことを特徴とする請求
項１記載の塔状構造物の振動抑制構造。2. An outer wall of a cylindrical body having a polygonal cylindrical shape, and ridges connecting tops of the polygon in a vertical direction are spirally inclined. The vibration suppressing structure of the tower-like structure described in the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10181286A JP2000008649A (en) | 1998-06-29 | 1998-06-29 | Vibration suppression structure of tower construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10181286A JP2000008649A (en) | 1998-06-29 | 1998-06-29 | Vibration suppression structure of tower construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000008649A true JP2000008649A (en) | 2000-01-11 |
Family
ID=16098044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10181286A Pending JP2000008649A (en) | 1998-06-29 | 1998-06-29 | Vibration suppression structure of tower construction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000008649A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012158941A (en) * | 2011-02-02 | 2012-08-23 | Kansai Electric Power Co Inc:The | Collective chimney |
| CN110761954A (en) * | 2019-11-19 | 2020-02-07 | 中国电建集团西北勘测设计研究院有限公司 | Prefabricated concrete fan tower cylinder with spiral line connecting seam and connecting method |
| CN115653377A (en) * | 2022-12-21 | 2023-01-31 | 中国电建集团山东电力建设第一工程有限公司 | Vibration suppression device and method for power transmission tower steel pipe based on magnetostriction |
-
1998
- 1998-06-29 JP JP10181286A patent/JP2000008649A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012158941A (en) * | 2011-02-02 | 2012-08-23 | Kansai Electric Power Co Inc:The | Collective chimney |
| CN110761954A (en) * | 2019-11-19 | 2020-02-07 | 中国电建集团西北勘测设计研究院有限公司 | Prefabricated concrete fan tower cylinder with spiral line connecting seam and connecting method |
| CN110761954B (en) * | 2019-11-19 | 2024-01-19 | 中国电建集团西北勘测设计研究院有限公司 | Precast concrete fan tower barrel with spiral line connecting seam and connecting method |
| CN115653377A (en) * | 2022-12-21 | 2023-01-31 | 中国电建集团山东电力建设第一工程有限公司 | Vibration suppression device and method for power transmission tower steel pipe based on magnetostriction |
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