JP3390202B2 - Boiler support structure - Google Patents
Boiler support structureInfo
- Publication number
- JP3390202B2 JP3390202B2 JP08213993A JP8213993A JP3390202B2 JP 3390202 B2 JP3390202 B2 JP 3390202B2 JP 08213993 A JP08213993 A JP 08213993A JP 8213993 A JP8213993 A JP 8213993A JP 3390202 B2 JP3390202 B2 JP 3390202B2
- Authority
- JP
- Japan
- Prior art keywords
- boiler
- elasto
- steel frame
- link
- plastic element
- 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 - Lifetime
Links
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- Vibration Dampers (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はボイラの支持構造体に係
り、特に地震時の応答荷重低減を考慮したボイラの支持
構造体に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supporting structure for a boiler, and more particularly to a supporting structure for a boiler in consideration of reduction of response load during an earthquake.
【０００２】[0002]
【従来の技術】図１に示すように、ボイラ装置は、運転
中のボイラ本体２の自由な熱膨脹を可能とするために、
支持鉄骨１より吊りボルト３で吊り下げられているの
で、そのままでは、地震発生時にはボイラ本体は吊り鐘
のように振り子運動をする。その際、ボイラ本体と支持
鉄骨との相対変位を限度内に制限する目的で、振れ止め
装置（サイスミックタイ）４が設けられている。相対変
位の限度は、ボイラ本体に接続される配管（特に高圧蒸
気配管）やダクト等を保護するために設定される。2. Description of the Related Art As shown in FIG. 1, a boiler apparatus is provided to enable free thermal expansion of a boiler body 2 during operation.
Since it is suspended from the supporting steel frame 1 by the suspension bolts 3, the boiler main body makes a pendulum motion like a bell when an earthquake occurs. At that time, a steady rest (seismic tie) 4 is provided for the purpose of limiting the relative displacement between the boiler body and the supporting steel frame within a limit. The limit of relative displacement is set to protect the pipes (especially high-pressure steam pipes) and ducts connected to the boiler body.
【０００３】従来のボイラ振れ止め装置の代表的な構造
を図６に、その平面内の配置を図７に示す。振れ止め装
置は、ボイラ本体を構成する水壁５の補強部材であるバ
ックステー６に取付けられた２個のストッパ１１で支持
鉄骨１を挟み込むように構成される。図中の矢印で示
す”振動方向”にボイラ本体を構成する水壁５およびバ
ックステー６が振れた場合、ストッパ１１が支持鉄骨１
に接触し、振幅が制限される。[0003] The typical structure of a conventional boiler steady rest 6, shows the arrangement of the plane in FIG. The steady rest device is configured such that the support steel frame 1 is sandwiched by two stoppers 11 attached to a back stay 6 that is a reinforcing member of the water wall 5 that constitutes the boiler body. When the water wall 5 and the back stay 6 constituting the boiler main body are shaken in the "vibration direction" indicated by the arrow in the figure, the stopper 11 supports the support steel frame 1
Touches and is limited in amplitude.
【０００４】ストッパ１１と支持鉄骨１は、接触以外に
お互いを拘束するものはなく、そのために図中に示す座
標系のｙおよびＺ方向のボイラ本体の熱膨脹は自由とな
る。ボイラ全体の熱膨脹を考慮して、平面的には図７に
示すように振れ止め装置が配置される。地震発生時に大
きな塑性変形を生じながら拘束を行うと、地震応答荷重
が低減することはよく知られており、この考え方に基づ
く配管系の振れ止め装置にエネルギーアブソーバがあ
る。しかしながら、上記従来技術ではストッパ１１は剛
性が大きく変形し難い構造となっているので、その付け
根部にひずみが集中することにより、大きな塑性変形が
許容できず、地震エネルギーの吸収量が小さくて、地震
応答荷重の低減は小さかった。このような従来技術に比
較し大きな塑性変形を可能にするものとして、図８およ
び図９に示す本発明者の出願にかかる未公知のボイラ振
れ止め装置（特願平４−１３３７３２号）がある。上記
発明では、両端がバックステー６とバインダ８で固定さ
れた等応力梁様式の変形を生ずる複数の弾塑性エレメン
ト７を用いて拘束するため、大きな塑性変形を許容で
き、前記従来技術の欠点は解消されている。ただし、上
記発明のボイラ振れ止め装置についてその後種々実験し
た結果、弾塑性エレメント７に変形が生じる際に、バッ
クステー６とバインダ８が常に平行を保つような機構が
設けられていないために、その性能を充分に発揮できな
い場合があるということが判明した。The stopper 11 and the supporting steel frame 1 do not restrain each other except for contact, and therefore the thermal expansion of the boiler main body in the y and Z directions of the coordinate system shown in the drawing is free. Considering the thermal expansion of the entire boiler, a steady rest is arranged in a plane as shown in FIG. It is well known that seismic response load is reduced by restraining a large plastic deformation when an earthquake occurs, and there is an energy absorber in the steady rest of the piping system based on this idea. However, in the above-mentioned conventional technique, since the stopper 11 has a structure that has a large rigidity and is difficult to be deformed, a large plastic deformation cannot be allowed due to the concentration of strain at the base portion thereof, and the amount of seismic energy absorption is small, The reduction of seismic response load was small. There is an unknown boiler steady rest device (Japanese Patent Application No. 4-133732) applied to the present inventor, which is shown in FIGS. 8 and 9, as a device that enables a large plastic deformation as compared with the prior art. . In the above invention, since a plurality of elasto-plastic elements 7 that are fixed at both ends by the back stay 6 and the binder 8 and are deformed in the manner of an equal stress beam are used for restraining, a large plastic deformation can be allowed, and the drawbacks of the conventional techniques are It has been resolved. However, as a result of various experiments afterwards with respect to the boiler steady rest of the above-mentioned invention, when the elastic-plastic element 7 is deformed, a mechanism for keeping the backstay 6 and the binder 8 always parallel to each other is not provided. It turned out that there are cases where the performance cannot be fully exhibited.
【０００５】[0005]
【発明が解決しようとする課題】上記発明者の発明にか
かるボイラ振れ止め装置では、弾塑性エレメント７が変
形しても、なおかつバックステー６とバインダ８が平行
を保つように考慮されておらず、図１０（ａ）に示すよ
うな変形様式を生ずる。図１０（ａ）に示す変形様式
は、荷重導入部であるバインダ８と固着端、つまり反力
を生ずるバックステー６との間に距離があり、振れ止め
装置全体に転倒モーメントが作用することによる。図１
０（ａ）において、転倒モーメントの影響の小さい中央
部の弾塑性エレメント７ａは、等応力梁として想定され
た変形様式となるが、転倒モーメントの影響の大きい外
側の弾塑性エレメントについては、圧縮力が作用する７
ｂは座屈して曲がりの進行が想定を超えて生じ、引張り
力が作用する７ｃでは端部のみが急激に曲がり、中間部
は直線に近い状態となる。In the boiler steady rest according to the invention of the present inventor, even if the elasto-plastic element 7 is deformed, the back stay 6 and the binder 8 are not considered so as to remain parallel to each other. produces a deformation manner as shown in Figure 10 (a). Modified manner shown in FIG. 10 (a), the binder 8 and the fixing end a load introduction portion, there is a distance between the backstay 6 that is causing a reaction force, steady rest overturning moment entire device by acting . Figure 1
At 0 (a) , the elasto-plastic element 7a in the central portion where the influence of the overturning moment is small has the deformation mode assumed as a constant stress beam, but the compressive force is applied to the outer elastoplastic element where the influence of the overturning moment is large. Acts on 7
In b, the buckling occurs and the bending progresses more than expected, and in 7c where the tensile force acts, only the ends bend sharply, and the middle part becomes a state close to a straight line.
【０００６】図１０（ａ）のような変形様式をとる理由
は次のように考えられる。まず、図１０（ａ）の変形様
式を単純化して表現すると図１０（ｂ）のようになる。
物体に作用する外力と、それに対する反力の間に偏心が
あると、物体を回転させようとする偶力が生じるので、
物体をバランスさせるためには、外力による偶力を打ち
消す偶力が必要となる。図１０（ｂ）の場合はバネ１の
伸び抵抗力とバネ２の圧縮抵抗力とにより、下式の釣り
合いでバランスがとれる。The reason for adopting the deformation mode as shown in FIG. 10 (a) is considered as follows. First, when the deformation mode of FIG. 10 (a) is simplified and expressed, it becomes as shown in FIG. 10 (b) .
If there is an eccentricity between the external force acting on the object and the reaction force against it, a couple force that rotates the object occurs, so
In order to balance an object, a couple that cancels a couple due to an external force is necessary. In the case of FIG. 10B, the expansion resistance force of the spring 1 and the compression resistance force of the spring 2 provide balance by the following equation.
【０００７】[0007]
【数１】ＦH ×ｅ＝ＦV ×ｌ
ＦH ×ｅ：時計回り
ＦV ×ｌ：反時計回り
上図のような現象を経験的にいえば、バイクで急ブレー
キを掛けた場合にフロントフォークのスプリングは縮
み、リアサスペンションのスプリングは延びることと同
じである。この場合、重心に生ずる慣性力が上図外力に
対応し、路面とタイヤの間に生ずる摩擦力が上図反力に
対応する。[Equation 1] F H × e = F V × l F H × e: Clockwise F V × l: Counterclockwise Experientially speaking, the phenomenon as shown in the above figure can be seen when the bicycle is suddenly braked. The spring on the front fork is the same as retracting, and the spring on the rear suspension is the same as extending. In this case, the inertial force generated at the center of gravity corresponds to the external force in the upper figure, and the frictional force generated between the road surface and the tire corresponds to the reaction force in the upper figure.
【０００８】プレート型のサイスミックタイの場合、バ
イクのフロントフォークのスプリングの縮みに相当する
側のプレートエレメントの変形は、塑性域で座屈を伴っ
て生ずることになる。実物大の試作品の試験結果として
得られた弾塑性エレメントのひずみ挙動を図１１ａおよ
び図１１ｂに示す。図１１ａは図１０（ａ）の７ａに示
す弾塑性エレメントのひずみを、図１１ｂは図１０
（ａ）の７ｂに示す弾塑性エレメントのひずみを示す。
等応力梁として想定された変形様式を示す図１１ａで
は、変位とひずみの関係は一定の勾配を持つ直線に沿っ
て変化し、変位を繰返しても直線から大きく外れること
はない。これに対し、想定を超えた変形を生ずる図１１
ｂでは、変位とひずみの関係は前記関係直線を外れ、し
かも、繰返すたびに片側（圧縮側）へシフトしていく挙
動を示す。その結果、中央部の弾塑性エレメントは実用
上必要とする繰返し変形に対して充分耐え得るのに対
し、外側の弾塑性エレメントは繰返し変形により、予想
より早い時点で破断する。In the case of the plate-type seismic tie, the deformation of the plate element on the side corresponding to the contraction of the spring of the front fork of the motorcycle is accompanied by buckling in the plastic region. The strain behavior of the elasto-plastic element obtained as a result of the test of the full-scale prototype is shown in FIGS. 11a and 11b. 11a shows the strain of the elasto-plastic element shown in 7a of FIG. 10 (a) , and FIG.
The strain of the elasto-plastic element shown to 7b of (a) is shown.
In FIG. 11a showing the deformation mode assumed as an iso-stress beam, the relationship between displacement and strain changes along a straight line having a constant gradient, and even if the displacement is repeated, it does not largely deviate from the straight line. On the other hand, FIG.
In b, the relationship between displacement and strain deviates from the above relational straight line, and moreover, it shows a behavior of shifting to one side (compression side) each time it is repeated. As a result, the elasto-plastic element in the central portion can sufficiently withstand the cyclic deformation required for practical use, while the elasto-plastic element on the outer side is fractured earlier than expected due to the cyclic deformation.
【０００９】本発明の目的は、上記先行技術の問題点を
解消し、繰返し変形に対する耐久性を有し、地震応答荷
重低減効果を安定して発揮するボイラ振れ止め装置を提
供することにある。An object of the present invention is to solve the above-mentioned problems of the prior art, to provide a boiler steady rest having durability against repeated deformation and stably exhibiting an earthquake response load reducing effect.
【００１０】[0010]
【課題を解決するための手段】上記目的を達成するため
本願の第１の発明は、ボイラ本体を支持する支持鉄骨
と、支持鉄骨に懸架されボイラ本体を熱による伸縮を許
容するごとく吊り下げ支持する吊り下げ部材と、ボイラ
本体と支持鉄骨との間に設けられ地震発生時の両者の相
対変位を限度内に制限する振れ止め装置とを備えたボイ
ラの支持構造体において、前記振れ止め装置を、ボイラ
本体側と支持鉄骨側にそれぞれ設けられた固着部材と、
該固着部材相互にそれぞれ両端が固着された複数の弾塑
性エレメントと、前記固着部材相互にそれぞれ両端が回
転自由度を有するピンで接続された２本以上のリンク部
材とで構成したことを特徴とするボイラの支持構造体に
関する。In order to achieve the above object, the first invention of the present application is to support a supporting steel frame for supporting a boiler main body, and suspend and support the boiler main body suspended from the supporting steel frame so as to allow expansion and contraction by heat. In the supporting structure of the boiler, which includes a hanging member, and a steady rest that is provided between the boiler main body and the supporting steel frame and limits the relative displacement of the both within a limit when an earthquake occurs, the steady rest ,boiler
Fixing members respectively provided on the main body side and the supporting steel frame side,
Plural elasto-plastics whose both ends are fixed to each other.
Flexible element and the fixing member are rotated at both ends.
Two or more link parts connected by pins that have a degree of freedom of rotation
The present invention relates to a support structure for a boiler, characterized in that
【００１１】本願の第２の発明は、上記第１の発明にお
いて、前記リンク部材のピン支持点間の長さを前記弾塑
性エレメントの長さより短く設定したことを特徴とする
ボイラの支持構造体に関する。A second invention of the present application is the same as the first invention.
The length between the pin support points of the link member
The present invention relates to a boiler support structure characterized by being set shorter than the length of the elastic element .
【００１２】[0012]
【００１３】[0013]
【作用】本願発明においては、ボイラの振れ止め装置と
してのサイスミックタイに用いる弾塑性エレメントの両
端を固着部材で固着し、両固着部材間に平行作動リンク
機構を設けることにより、外側弾塑性エレメント（７
ｂ）が過剰な変形を生じないように、弾塑性エレメント
の端部の描く軌跡を、リンクの支点ピンの描く軌跡と相
似に制約することにより、外側の弾塑性エレメントのひ
ずみの増長が抑制され、繰返し変形による早期の破断は
解消される。According to the present invention, both ends of the elasto-plastic element used for the seismic tie as the steady rest of the boiler are fixed by the fixing members, and the parallel actuating link mechanism is provided between the fixing members, so that the outer elastic-plastic element is formed. (7
By limiting the trajectory drawn by the end of the elasto-plastic element to be similar to the trajectory drawn by the fulcrum pin of the link so that b) does not cause excessive deformation, the increase in strain of the outer elasto-plastic element is suppressed. , Early fracture due to repeated deformation is eliminated.
【００１４】この場合、特に、等応力梁の変形様式に沿
って挙動する中央部の弾塑性エレメント（７ａ）の端部
の描く軌跡と、リンクの支点ピンの描く軌跡がほぼ同一
とななるように、リンクの長さを弾塑性エレメントの長
さよりも短く設定することにより、外側の弾塑性エレメ
ントのひずみ挙動は、充分な耐久性を有する中央部の弾
塑性エレメントと同程度の耐久性を有することになり、
振れ止め装置全体としても耐久性の優れたものとなる。In this case, in particular, the locus drawn by the end of the elasto-plastic element (7a) in the central part, which behaves along the deformation mode of the iso-stress beam, and the locus drawn by the fulcrum pin of the link are substantially the same. In addition, by setting the length of the link shorter than the length of the elasto-plastic element, the strain behavior of the outer elasto-plastic element has the same level of durability as the elasto-plastic element of the central part with sufficient durability. And then
The steady rest also has excellent durability.
【００１５】[0015]
【実施例】本発明の適用対象であるボイラ装置全体の支
持方法の概念を図１に、本発明の実施例を図２に示す。
図２の実施例は、弾塑性エレメント７とリンク９で構成
されるサイスミックタイをユニットとして組立て、搬
入、取付けを行えるように、バインダ８をボイラ本体側
と支持鉄骨側の両方に設けている。また、図２の実施例
では、サイスミックタイの取付け部を必要に応じて補強
が容易に行える支持鉄骨側にバインダ８を固着し、ボイ
ラ本体側のバインダ８に荷重導入を行っている。しかし
ながら、一方の端を固着し、他方の端を変位させて等応
力梁の変形様式を弾塑性エレメントに生じさせ、その拘
束力でボイラ本体と支持鉄骨との相対変位を制限する基
本原理は、前記の本発明者の提案にかかる未公知のボイ
ラ振れ止め装置と同一である。FIG. 1 shows the concept of a method of supporting the entire boiler apparatus to which the present invention is applied, and FIG. 2 shows an embodiment of the present invention.
In the embodiment shown in FIG. 2, a binder 8 is provided on both the boiler body side and the supporting steel frame side so that a seismic tie composed of an elasto-plastic element 7 and a link 9 can be assembled, carried in and attached as a unit. . Further, in the embodiment of FIG. 2, the binder 8 is fixed to the supporting steel frame side where the attachment portion of the seismic tie can be easily reinforced as needed, and the load is introduced into the binder 8 on the boiler body side. However, the basic principle of fixing one end and displacing the other end to generate the deformation mode of the equal stress beam in the elasto-plastic element and restricting the relative displacement between the boiler body and the supporting steel frame by its restraining force is: This is the same as the unsettled boiler steady rest device according to the above-mentioned proposal by the present inventor.
【００１６】本発明の特徴であるリンク９は最低２本を
一対として用い、バインダ８に回転自由度を有するピン
１０で接続される。本発明の特徴であるリンク部の部分
拡大部を図３ａおよび図３ｂに示す。図３ａは変形前の
状態を、図３ｂは変形後の状態を示す。図３ａの状態か
ら図３ｂの状態へ変形する際に移動側ピン１０ｂの描く
軌跡は、固定側ピン１０ａを中心とし、リンク９のピン
支点間長さＬを半径とする円弧となる。移動側ピン１０
ｂと移動側バインダ８ｂの間には相対的な変位はないの
で、固定側バインダ８ａと移動側バインダ８ｂの面間距
離の変化量δは下式にて示される。The link 9 which is a feature of the present invention uses at least two as a pair, and is connected to the binder 8 by a pin 10 having a rotational degree of freedom. A partially enlarged portion of the link portion, which is a feature of the present invention, is shown in FIGS. 3a and 3b. FIG. 3a shows a state before deformation, and FIG. 3b shows a state after deformation. When the state of FIG. 3a is transformed into the state of FIG. 3b, the locus drawn by the moving side pin 10b is an arc centered on the fixed side pin 10a and having a radius L between the pin fulcrums of the link 9. Moving side pin 10
Since there is no relative displacement between b and the moving side binder 8b, the change amount δ of the surface distance between the fixed side binder 8a and the moving side binder 8b is expressed by the following equation.
【００１７】[0017]
【数２】
ｕ＝ｌ×（１−ｃｏｓθ）
弾塑性エレメント７の一端は移動側バインダ８ｂに拘束
されているので、弾塑性エレメント７の変形も上式の制
約を受け、過剰な変形は防止される。リンク９のピン支
点間長さＬを、弾塑性エレメント７の長さａより短く設
定する必要性を示すのが図４ａ、図４ｂおよび図４ｃで
ある。図４ａは等応力梁の一端が回転拘束を受けたまま
δだけ変位を受けた場合の変形様式を示す。変形曲線に
沿った長さは当然変形前の長さと同じａとなるように、
移動側端部の変位ｕ0 が生じる。図４ｂはリンク９の支
点間長さＬを、弾塑性エレメント７の長さａと等しくし
た場合を示す。リンク９は移動後も直線であり、移動側
ピン１０ｂの変位ｕ1 は、図４ａのｕ0 よりも小さくな
る。言い換えれば、Ｌ＝ａとするリンク９を用いた場合
は、弾塑性エレメント７は等応力梁の変形様式でなく、
ほぼ直線的に引き伸ばされることになる。一方、図４ｃ
はリンク９の支点間長さＬを弾塑性エレメント７の長さ
ａより短く設定した場合を示す。リンク９は、図４ｃに
破線で示す弾塑性エレメント７の変形曲線を多直線近似
する形に変位するので、端部変位ｕ2は、図４ａに示す
変位ｕ0 に近いものとなる。実用的な弾塑性エレメント
７の長さの上、下限に対し、前記のｕ0 、ｕ1 およびｕ
2 の関係を図５ａおよび図５ｂに示す。図５ａ、図５ｂ
のいずれにおいても、リンク９の長さＬは、弾塑性エレ
メント７の長さａの８０％を用いた場合、前記ｕ0 とｕ
2 はほぼ一致しており、リンク９は弾塑性エレメント７
を等応力梁の変形様式に導くことが可能となる。## EQU00002 ## u = l.times. (1-cos .theta.) Since one end of the elasto-plastic element 7 is constrained by the moving side binder 8b, the deformation of the elasto-plastic element 7 is also restricted by the above equation and excessive deformation is prevented. To be done. FIGS. 4a, 4b and 4c show the necessity of setting the length L between the pin fulcrums of the link 9 to be shorter than the length a of the elasto-plastic element 7. FIG. 4a shows a deformation pattern in the case where one end of the iso-stress beam is displaced by δ while being rotationally restrained. The length along the deformation curve is naturally the same as the length before deformation,
Displacement u 0 of the moving side end occurs. FIG. 4b shows a case where the length L between the fulcrums of the link 9 is made equal to the length a of the elasto-plastic element 7. The link 9 remains straight after the movement, and the displacement u 1 of the moving pin 10b is smaller than u 0 in FIG. 4a. In other words, when the link 9 with L = a is used, the elasto-plastic element 7 is not the deformation mode of the equal stress beam,
It will be stretched almost linearly. On the other hand, FIG.
Shows the case where the length L between the fulcrums of the link 9 is set shorter than the length a of the elasto-plastic element 7. Since the link 9 is displaced in such a manner that the deformation curve of the elasto-plastic element 7 shown by the broken line in FIG. 4c is approximated to a straight line, the end displacement u 2 is close to the displacement u 0 shown in FIG. 4a. For the upper and lower limits of the length of the practical elasto-plastic element 7, the above u 0 , u 1 and u
The relationship of 2 is shown in FIGS. 5a and 5b. 5a and 5b
In any of the above, the length L of the link 9 is u 0 and u when 80% of the length a of the elasto-plastic element 7 is used.
2 is almost the same, link 9 is elasto-plastic element 7
Can be introduced into the deformation mode of the iso-stress beam.
【００１８】図２において、バインダ８とリンク９に充
分な剛性を持たせることにより、２つのバインダ８は常
に平行な直線を保つことになり、全ての弾塑性エレメン
ト７に同様な等応力梁の変形様式を与えることが可能に
なる。つまり、試験で良好な耐久性が得られているとこ
ろの、図１１に示す変位とひずみの関係が、全ての弾塑
性エレメント７に適用されることになり、振れ止め装置
全体の耐久性も良好なものとなる。In FIG. 2, by giving the binder 8 and the link 9 sufficient rigidity, the two binders 8 always maintain parallel straight lines, and all the elasto-plastic elements 7 have the same equal stress beam. It becomes possible to give a transformation style. That is, the relationship between the displacement and strain shown in FIG. 11 where good durability is obtained in the test is applied to all the elasto-plastic elements 7, and the durability of the steady rest is also good. It will be
【００１９】[0019]
【発明の効果】本発明によれば、塑性変形を生じながら
拘束力を発生する複数の弾塑性エレメントの全てを、等
応力梁の変形様式に保持するためのリンクを設けたこと
により、繰返し変形に対する弾塑性エレメントの耐久性
を向上することが可能となり、地震応答荷重低減に好適
で、かつ、信頼性の高いボイラ支持構造体を得ることが
できる。According to the present invention, by providing a link for holding all of a plurality of elasto-plastic elements that generate a restraining force while causing plastic deformation in the deformation mode of an iso-stress beam, repeated deformation is achieved. It is possible to improve the durability of the elasto-plastic element against, and it is possible to obtain a boiler support structure that is suitable for reducing the seismic response load and has high reliability.
【図１】本発明が適用されるボイラ支持構造体の概要
図。FIG. 1 is a schematic diagram of a boiler support structure to which the present invention is applied.
【図２】本発明の実施例の説明図。FIG. 2 is an explanatory diagram of an embodiment of the present invention.
【図３】本発明の実施例におけるリンク部の部分拡大
図。FIG. 3 is a partially enlarged view of a link portion according to the embodiment of the present invention.
【図４】リンクのピン支点間長さを弾塑性エレメントの
長さより短く設定した場合の説明図。FIG. 4 is an explanatory view when the length between link pin fulcrums is set shorter than the length of the elasto-plastic element.
【図５】リンクのピン支点間長さを弾塑性エレメントの
長さの８０％程度としたときの状態を示す説明図。FIG. 5 is an explanatory diagram showing a state in which the length between the pin fulcrums of the link is set to about 80% of the length of the elastoplastic element.
【図６】従来技術によるボイラ振れ止め装置（サイスミ
ックタイ）の斜視図。FIG. 6 is a perspective view of a boiler steady rest (seismic tie) according to the prior art.
【図７】ボイラ振れ止め装置（サイスミックタイ）の水
平面内配置図。FIG. 7 is a horizontal plane layout view of a boiler steady rest (seismic tie).
【図８】本発明者の出願にかかる未公知のボイラ振れ止
め装置（サイスミックタイ）の斜視図。FIG. 8 is a perspective view of an unknown boiler steady rest device (seismic tie) according to the present application.
【図９】本発明者の提案にかかる未公知のボイラ振れ止
め装置（サイスミックタイ）の他の実施例を示す平面
図。FIG. 9 is a plan view showing another embodiment of an unknown boiler steadying device (seismic tie) proposed by the present inventor.
【図１０】前記図８および図９の先行技術に基づく試作
品の変形状態を示す説明図。FIG. 10 is an explanatory diagram showing a deformed state of the prototype based on the prior art shown in FIGS. 8 and 9;
【図１１】前記図８および図９の先行技術に基づく試作
品の試験で得られた弾塑性エレメントの変位とひずみの
関係図。FIG. 11 is a diagram showing the relationship between displacement and strain of the elasto-plastic element obtained in the test of the prototype based on the prior art shown in FIGS. 8 and 9;
１…支持鉄骨、２…ボイラ本体、３…吊りボルト、４…
サイスミックタイ、５…水壁、６…バックステー、７…
弾塑性エレメント、８…バインダ、９…リンク、１０…
ピン、１１…ストッパ。1 ... Support steel frame, 2 ... Boiler body, 3 ... Hanging bolt, 4 ...
Seismic tie, 5 ... Water wall, 6 ... Back stay, 7 ...
Elasto-plastic element, 8 ... Binder, 9 ... Link, 10 ...
Pin, 11 ... Stopper.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平１−123901（ＪＰ，Ａ) 実開 平３−56006（ＪＰ，Ｕ) 実開 平２−14509（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F22B 37/24 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-1-123901 (JP, A) Actual Kaihei 3-56006 (JP, U) Actual Kaihei 2-14509 (JP, U) (58) Field (Int.Cl. 7 , DB name) F22B 37/24
Claims (2)
鉄骨に懸架されボイラ本体を熱による伸縮を許容するご
とく吊り下げ支持する吊り下げ部材と、ボイラ本体と支
持鉄骨との間に設けられ地震発生時の両者の相対変位を
限度内に制限する振れ止め装置とを備えたボイラの支持
構造体において、前記振れ止め装置を、ボイラ本体側と
支持鉄骨側にそれぞれ設けられた固着部材と、該固着部
材相互にそれぞれ両端が固着された複数の弾塑性エレメ
ントと、前記固着部材相互にそれぞれ両端が回転自由度
を有するピンで接続された２本以上のリンク部材とで構
成したことを特徴とするボイラの支持構造体。 Claim: What is claimed is: 1. A supporting steel frame for supporting a boiler main body, a suspension member suspended from the supporting steel frame for suspending and supporting the boiler main body so as to allow expansion and contraction by heat, and an earthquake provided between the boiler main body and the supporting steel frame. In a boiler support structure provided with a steady rest for limiting the relative displacement of the two at the time of occurrence, the steady rest is connected to the boiler body side.
Fixing members respectively provided on the supporting steel frame side and the fixing portions
Multiple elasto-plastic elements with both ends secured to each other
And both ends of the fixing member are rotatable.
A support structure for a boiler, comprising: two or more link members connected by a pin having
前記弾塑性エレメントの長さより短く設定したことを特
徴とする請求項１に記載のボイラの支持構造体。 2. The boiler support structure according to claim 1, wherein a length between pin support points of the link member is set shorter than a length of the elasto-plastic element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08213993A JP3390202B2 (en) | 1993-04-08 | 1993-04-08 | Boiler support structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08213993A JP3390202B2 (en) | 1993-04-08 | 1993-04-08 | Boiler support structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06300212A JPH06300212A (en) | 1994-10-28 |
| JP3390202B2 true JP3390202B2 (en) | 2003-03-24 |
Family
ID=13766096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08213993A Expired - Lifetime JP3390202B2 (en) | 1993-04-08 | 1993-04-08 | Boiler support structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3390202B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112323981B (en) * | 2020-10-28 | 2021-10-08 | 中国矿业大学(北京) | Direction-changeable guide rail type supporting structure capable of resisting three-dimensional movement deformation |
-
1993
- 1993-04-08 JP JP08213993A patent/JP3390202B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06300212A (en) | 1994-10-28 |
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