JPH11241805A - Earthquake load reducing structure for boiler main body - Google Patents
Earthquake load reducing structure for boiler main bodyInfo
- Publication number
- JPH11241805A JPH11241805A JP4360498A JP4360498A JPH11241805A JP H11241805 A JPH11241805 A JP H11241805A JP 4360498 A JP4360498 A JP 4360498A JP 4360498 A JP4360498 A JP 4360498A JP H11241805 A JPH11241805 A JP H11241805A
- Authority
- JP
- Japan
- Prior art keywords
- seismic load
- steel frames
- attached
- back stay
- steel frame
- 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.)
- Pending
Links
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はボイラ本体の地震荷
重低減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 seismic load reducing structure for a boiler body.
【０００２】[0002]
【従来の技術】地震時にボイラ本体に作用する地震荷重
は、柱等の鉄骨に伝達し支持させるようにしてボイラ本
体に作用する地震荷重を低減させる必要があるが、斯か
る地震荷重低減構造の従来例は図５に示されている。2. Description of the Related Art An earthquake load acting on a boiler body during an earthquake must be transmitted to and supported by a steel frame such as a column to reduce the seismic load acting on the boiler body. The conventional example is shown in FIG.
【０００３】図５中、１はボイラ本体、２はボイラ本体
１の外周を包囲するようボイラ本体１外周に取付けられ
た水平バックステー、３，４は水平バックステー２に近
接して水平バックステー２の外周側に基礎から立設され
た柱等の鉄骨であり、水平バックステー２には、各鉄骨
３，４の両側面を挟むがごとく、ブラケット状の地震荷
重伝達部材５，６が取付けられている。而して各地震荷
重伝達部材５，６と鉄骨３，４側面との間のクリアラン
スＣは約５ｍｍ程度である。In FIG. 5, reference numeral 1 denotes a boiler main body, 2 denotes a horizontal backstay attached to the outer periphery of the boiler main body 1 so as to surround the outer circumference of the boiler main body 1, and 3 and 4 denote horizontal backstays close to the horizontal backstay 2. 2 is a steel frame such as a pillar erected from the foundation on the outer peripheral side, and bracket-like seismic load transmitting members 5 and 6 are attached to the horizontal back stay 2 so as to sandwich both side surfaces of the steel frames 3 and 4. Have been. Thus, the clearance C between each of the seismic load transmitting members 5, 6 and the side surfaces of the steel frames 3, 4 is about 5 mm.
【０００４】図５においてボイラ本体１にＸ方向の地震
荷重が作用した場合には、ボイラ本体１は図５の紙面の
左右方向へ振動するが、地震荷重伝達部材５が鉄骨３の
側面に当接するため、地震荷重は鉄骨３に伝達、支持さ
れ、従ってボイラ本体１に大きな地震荷重が作用するの
を防止することができる。In FIG. 5, when an X-direction seismic load acts on the boiler main body 1, the boiler main body 1 vibrates in the horizontal direction on the paper of FIG. 5, but the seismic load transmitting member 5 hits the side of the steel frame 3. Due to the contact, the seismic load is transmitted to and supported by the steel frame 3, so that a large seismic load can be prevented from acting on the boiler body 1.
【０００５】図５において、ボイラ本体１にＹ方向の地
震荷重が作用した場合には、ボイラ本体１は図５の紙面
の上下方向へ振動するが、地震荷重伝達部材６が鉄骨４
の側面に当接するため、地震荷重は鉄骨３に伝達、支持
され、従ってボイラ本体１に大きな地震が作用するのを
防止することができる。In FIG. 5, when a seismic load acts on the boiler main body 1 in the Y direction, the boiler main body 1 vibrates in the vertical direction on the plane of FIG.
, The seismic load is transmitted to and supported by the steel frame 3, thus preventing a large earthquake from acting on the boiler body 1.
【０００６】[0006]
【発明が解決しようとする課題】近年、ボイラの大容量
化に伴い、ボイラ本体１も大型化し、従って、ボイラ本
体１に作用する大きな地震荷重を鉄骨３に伝達、支持さ
せるためには、水平バックステー２及び地震荷重伝達部
材５，６並に鉄骨３，４の大型化を招来する虞れがあ
る。In recent years, as the capacity of the boiler has been increased, the size of the boiler body 1 has also been increased. Therefore, in order to transmit and support a large seismic load acting on the boiler body 1 to the steel frame 3, it is necessary to use a horizontal structure. There is a possibility that the backstay 2 and the seismic load transmitting members 5 and 6 as well as the steel frames 3 and 4 may be enlarged.
【０００７】本発明は上述の実情に鑑み、ボイラの大容
量化に伴いボイラ本体が大型化した場合にも、水平バッ
クステー及び地震荷重伝達部材並に地震荷重伝達部材か
ら伝達された地震荷重を支持する鉄骨を大型化する必要
のないボイラ本体の地震荷重低減構造を提供することを
目的としてなしたものである。In view of the above-mentioned circumstances, the present invention is designed to reduce the seismic load transmitted from the seismic load transmitting member as well as the horizontal backstay and the seismic load transmitting member even when the size of the boiler is increased due to the increase in the capacity of the boiler. It is an object of the present invention to provide a structure for reducing the seismic load of a boiler body which does not require a large steel frame to be supported.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、本発明のボイラ本体の地震荷重低減構造において
は、ボイラ本体の外周に取付けた水平バックステーに、
第１の鉄骨に地震荷重を伝達し支持させるための地震荷
重伝達部材を取付け、前記水平バックステーと第２の鉄
骨との間に流体圧ダンパを介在させている。In order to achieve the above object, in the structure for reducing the seismic load of a boiler body according to the present invention, a horizontal back stay attached to the outer periphery of the boiler body includes:
A seismic load transmitting member for transmitting and supporting the seismic load is attached to the first steel frame, and a fluid pressure damper is interposed between the horizontal backstay and the second steel frame.
【０００９】又、本発明のボイラ本体の地震荷重低減構
造においては、ボイラ本体の外周に取付けた水平バック
ステーに、第１の鉄骨に地震荷重を伝達し支持させるた
めの地震荷重伝達部材を取付け、前記水平バックステー
の上下面に取付けたブラケットと第２の鉄骨との間に流
体圧ダンパを介在させており、更にボイラ本体の外周に
取付けた水平バックステーに、第１の鉄骨に地震荷重を
伝達し支持させるための地震荷重伝達部材を取付け、前
記水平バックステーに取付けた縦バックステーと第２の
鉄骨との間に流体圧ダンパを介在させている。Further, in the seismic load reducing structure for a boiler body according to the present invention, a seismic load transmitting member for transmitting and supporting the seismic load on the first steel frame is mounted on a horizontal backstay mounted on the outer periphery of the boiler main body. A fluid pressure damper is interposed between the bracket attached to the upper and lower surfaces of the horizontal back stay and the second steel frame, and further, the horizontal back stay attached to the outer periphery of the boiler main body is subjected to an earthquake load on the first steel frame. A seismic load transmitting member for transmitting and supporting the force is attached, and a fluid pressure damper is interposed between the vertical back stay attached to the horizontal back stay and the second steel frame.
【００１０】従って、本発明では、地震によりボイラ本
体に作用した地震荷重の一部は流体圧ダンパに吸収され
るため、荷重伝達部材から第１の鉄骨に伝達され、支持
される地震荷重は大きくならず、従って水平バックステ
ー及び地震荷重伝達部材並に第１の鉄骨を大型化する必
要がない。Therefore, in the present invention, part of the seismic load acting on the boiler main body due to the earthquake is absorbed by the fluid pressure damper, so that the seismic load transmitted from the load transmitting member to the first steel frame and supported is large. Therefore, there is no need to increase the size of the first steel frame as much as the horizontal backstay and the seismic load transmitting member.
【００１１】[0011]
【発明の実施の形態】以下、本発明の実施の形態を添付
図面を参照しつつ説明する。Embodiments of the present invention will be described below with reference to the accompanying drawings.
【００１２】図１及び図２は本発明の実施の形態の一例
を示し、図１は平面図、図２は図１のＩＩ−ＩＩ方向拡
大矢視図である。1 and 2 show an embodiment of the present invention. FIG. 1 is a plan view, and FIG. 2 is an enlarged view in the direction of arrows II-II in FIG.
【００１３】図１、２中、図５に示すものと同一のもの
には同一の符号を付し、説明を省略する。In FIGS. 1 and 2, the same components as those shown in FIG. 5 are denoted by the same reference numerals, and description thereof will be omitted.
【００１４】図中、７，８は水平バックステー２の外側
に基礎から立設するよう配設された支柱等の鉄骨であ
り、鉄骨７は鉄骨４の両側に位置し、鉄骨８は鉄骨３の
両側に位置している。In the figure, reference numerals 7 and 8 denote steel frames such as pillars arranged so as to be erected from the foundation outside the horizontal back stay 2. The steel frames 7 are located on both sides of the steel frame 4, and the steel frames 8 are formed by the steel frames 3. Located on both sides of.
【００１５】９，１０は水平バックステー２と鉄骨７，
８の間に配設された油圧ダンパであり、油圧ダンパ９，
１０は先端を水平バックステー２に枢着され、後端を鉄
骨７，８に枢着されている。9 and 10 are a horizontal back stay 2 and a steel frame 7,
8 and hydraulic dampers 9,
Reference numeral 10 is pivotally connected at one end to the horizontal back stay 2 and at rear end to the steel frames 7 and 8.
【００１６】次に、本発明の作動について説明する。Next, the operation of the present invention will be described.
【００１７】図１においてボイラ本体１にＸ方向の地震
荷重が作用すると、地震荷重の一部は水平バックステー
２から油圧ダンパ９に伝達され、油圧ダンパ９により吸
収される。このため、水平バックステー２から地震荷重
伝達部材５を介して鉄骨３に伝達され、支持される地震
荷重は減少する。In FIG. 1, when an X-direction seismic load acts on the boiler main body 1, a part of the seismic load is transmitted from the horizontal backstay 2 to the hydraulic damper 9 and absorbed by the hydraulic damper 9. Therefore, the seismic load transmitted from the horizontal backstay 2 to the steel frame 3 via the seismic load transmitting member 5 and supported is reduced.
【００１８】又、図１においてボイラ本体１にＹ方向の
地震荷重が作用すると、地震荷重の一部は水平バックス
テー２から油圧ダンパ１０に伝達され、油圧ダンパ１０
に吸収される。このため、水平バックステー２から地震
荷重伝達部材６を介して鉄骨４に伝達され、支持される
地震荷重は減少する。In FIG. 1, when a seismic load acts on the boiler main body 1 in the Y direction, a part of the seismic load is transmitted from the horizontal backstay 2 to the hydraulic damper 10, and
Is absorbed by For this reason, the seismic load transmitted from the horizontal backstay 2 to the steel frame 4 via the seismic load transmitting member 6 is reduced.
【００１９】上述のように油圧ダンパ９，１０を用いる
ことにより、水平バックステー２から地震荷重伝達部材
５，６を介して鉄骨３，４に伝達され、支持される地震
荷重は減少するため、水平バックステー２、地震荷重伝
達部材５，６、鉄骨３，４が大型化することを防止でき
る。By using the hydraulic dampers 9 and 10 as described above, the seismic load transmitted from the horizontal back stay 2 to the steel frames 3 and 4 via the seismic load transmitting members 5 and 6 and supported is reduced. The horizontal back stay 2, the seismic load transmitting members 5, 6, and the steel frames 3, 4 can be prevented from increasing in size.
【００２０】図３は本発明の実施の形態の他の例を示す
側面図であり、図１のＩＩ−ＩＩ方向拡大矢視図に相当
する。FIG. 3 is a side view showing another example of the embodiment of the present invention, and corresponds to an enlarged view in the direction of arrows II-II in FIG.
【００２１】本実施の形態例は、ボイラ本体１と鉄骨
７，８との間の間隔が十分に取れない場合に適してい
る。The present embodiment is suitable when the space between the boiler main body 1 and the steel frames 7 and 8 cannot be sufficiently secured.
【００２２】図中、１１，１２は水平バックステー２の
上下面に取付けたブラケットであり、後端を鉄骨７，８
に枢着された上下２段の油圧ダンパ９，１０の先端はブ
ラケット１１，１２に枢着されている。In the figure, reference numerals 11 and 12 denote brackets attached to the upper and lower surfaces of the horizontal back stay 2, and the rear ends thereof are steel frames 7, 8.
The upper and lower two-stage hydraulic dampers 9, 10 pivotally attached to the upper end are pivotally attached to brackets 11, 12.
【００２３】本実施の形態例においては、油圧ダンパ
９，１０は上下にしかも、水平バックステー２の上下方
向中心位置を基準として上下に等間隔に配置されている
ため、水平バックステー２に作用するモーメントは、相
殺され、又上、下の各油圧ダンパ９，１０の小型化が可
能となる。In this embodiment, since the hydraulic dampers 9 and 10 are arranged vertically and at equal intervals above and below the vertical center of the horizontal backstay 2, they act on the horizontal backstay 2. The damping moments are canceled out, and the size of the upper and lower hydraulic dampers 9 and 10 can be reduced.
【００２４】図４は本発明の実施の形態の更に他の例を
示す側面図であり、図１のＩＩ−ＩＩ方向拡大矢視図に
相当する。FIG. 4 is a side view showing still another example of the embodiment of the present invention, and corresponds to an enlarged view taken in the direction of arrows II-II in FIG.
【００２５】本実施の形態例も、ボイラ本体１と鉄骨
７，８との間の間隔が十分に取れない場合に適してい
る。This embodiment is also suitable when the space between the boiler main body 1 and the steel frames 7, 8 cannot be sufficiently secured.
【００２６】本実施の形態においては、水平バックステ
ー２は上下２段に配置され、上下の水平バックステー
２，２間には、縦バックステー１３が設置されている。In the present embodiment, the horizontal backstays 2 are arranged in two stages, upper and lower, and a vertical backstay 13 is provided between the upper and lower horizontal backstays 2.
【００２７】而して、後端を鉄骨７，８に枢着された油
圧ダンパ９，１０の先端は縦バックステー１３に枢着さ
れている。The distal ends of the hydraulic dampers 9, 10 whose rear ends are pivotally connected to the steel frames 7, 8 are pivotally connected to the vertical back stay 13.
【００２８】図３、４に示す実施の形態におても、ボイ
ラ本体１に作用する地震荷重の一部は油圧ダンパ９，１
０に吸収されるため、水平バックステー２から地震荷重
伝達部材５，６を介して鉄骨３，４に伝達され、支持さ
れる地震荷重は減少し、水平バックステー２、地震荷重
伝達部材５，６、鉄骨３，４が大型化することを防止で
きる（地震荷重伝達部材５，６、鉄骨３，４は図１参
照）。In the embodiment shown in FIGS. 3 and 4, a part of the seismic load acting on the boiler body 1 is partially reduced by the hydraulic dampers 9 and 1.
Therefore, the seismic load transmitted from the horizontal back stay 2 to the steel frames 3 and 4 via the seismic load transmitting members 5 and 6 is reduced, and the horizontal back stay 2 and the seismic load transmitting member 5 are reduced. 6. It is possible to prevent the steel frames 3 and 4 from increasing in size (see FIG. 1 for the seismic load transmitting members 5 and 6 and the steel frames 3 and 4).
【００２９】なお本発明の実施の形態においては、ダン
パとして油圧ダンパを用いる場合について説明したが、
流体圧ダンパなら全て使用可能なこと、その他、本発明
の要旨を逸脱しない範囲内で種々変更を加え得ること、
等は勿論である。In the embodiment of the present invention, the case where the hydraulic damper is used as the damper has been described.
That all fluid pressure dampers can be used, and that various changes can be made without departing from the gist of the present invention;
Of course, it is.
【００３０】[0030]
【発明の効果】本発明のボイラ本体の地震荷重低減構造
によれば、地震によりボイラ本体に作用する地震荷重の
一部は流体圧ダンパに吸収されるため、荷重伝達部材か
ら第１の鉄骨に伝達され、支持される地震荷重は大きく
ならず、従って水平バックステー及び地震荷重伝達部材
並に第１の鉄骨を大型化する必要がない。According to the structure for reducing the seismic load of the boiler body of the present invention, a part of the seismic load acting on the boiler body due to the earthquake is absorbed by the fluid pressure damper. The transmitted and supported seismic load does not increase, so there is no need to enlarge the first steel frame as well as the horizontal backstay and the seismic load transmitting member.
【図１】本発明のボイラ本体の地震荷重低減構造の平面
図である。FIG. 1 is a plan view of a structure for reducing an earthquake load of a boiler body according to the present invention.
【図２】図１のＩＩ−ＩＩ方向拡大矢視図である。FIG. 2 is an enlarged view in the direction of arrows II-II in FIG.
【図３】本発明のボイラ本体の地震荷重低減構造の実施
の形態の他の例を示す側面図であり、図１のＩＩ−ＩＩ
方向拡大矢視図に相当する図である。FIG. 3 is a side view showing another example of the embodiment of the seismic load reducing structure of the boiler body of the present invention, and is a II-II of FIG.
It is a figure equivalent to a direction enlarged arrow view.
【図４】本発明のボイラ本体の地震荷重低減構造の実施
の形態の更に他の例を示す側面図であり、図１のＩＩ−
ＩＩ方向拡大矢視図に相当する図である。FIG. 4 is a side view showing still another example of the embodiment of the seismic load reducing structure of the boiler main body of the present invention, and is II-FIG.
It is a figure equivalent to a II direction enlarged arrow view.
【図５】従来のボイラ本体の地震荷重低減構造の例を示
す平面図である。FIG. 5 is a plan view showing an example of a conventional seismic load reduction structure for a boiler body.
１ ボイラ本体 ２ 水平バックステー ３，４ 鉄骨（第１の鉄骨） ５，６ 地震荷重伝達部材 ７，８ 鉄骨（第２の鉄骨） ９，１０ 油圧ダンパ（流体圧ダンパ） １１，１２ ブラケット １３ 縦バックステー DESCRIPTION OF SYMBOLS 1 Boiler main body 2 Horizontal back stay 3, 4 Steel frame (first steel frame) 5, 6 Earthquake load transmitting member 7, 8 Steel frame (second steel frame) 9, 10 Hydraulic damper (fluid pressure damper) 11, 12 Bracket 13 Vertical Back stay
フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｆ１６Ｆ 15/023 Ｆ１６Ｆ 15/023 Continued on the front page (51) Int.Cl. 6 Identification code FI F16F 15/023 F16F 15/023
Claims (3)
ステーに、第１の鉄骨に地震荷重を伝達し支持させるた
めの地震荷重伝達部材を取付け、前記水平バックステー
と第２の鉄骨との間に流体圧ダンパを介在させたことを
特徴とするボイラ本体の地震荷重低減構造。1. A seismic load transmitting member for transmitting and supporting a seismic load on a first steel frame is mounted on a horizontal back stay mounted on the outer periphery of a boiler main body, and between a horizontal back stay and a second steel frame. A seismic load reduction structure for the boiler body, characterized in that a fluid pressure damper is interposed in the boiler.
ステーに、第１の鉄骨に地震荷重を伝達し支持させるた
めの地震荷重伝達部材を取付け、前記水平バックステー
の上下面に取付けたブラケットと第２の鉄骨との間に流
体圧ダンパを介在させたことを特徴とするボイラ本体の
地震荷重低減構造。2. A bracket attached to upper and lower surfaces of the horizontal backstay, wherein a seismic load transmitting member for transmitting and supporting an earthquake load on the first steel frame is attached to a horizontal backstay attached to the outer periphery of the boiler body. A structure for reducing seismic load of a boiler body, characterized in that a fluid pressure damper is interposed between the second steel frame and the second steel frame.
ステーに、第１の鉄骨に地震荷重を伝達し支持させるた
めの地震荷重伝達部材を取付け、前記水平バックステー
に取付けた縦バックステーと第２の鉄骨との間に流体圧
ダンパを介在させたことを特徴とするボイラ本体の地震
荷重低減構造。3. A seismic load transmitting member for transmitting and supporting a seismic load on a first steel frame is attached to a horizontal back stay attached to the outer periphery of the boiler body, and a vertical back stay attached to the horizontal back stay is provided. 2. A seismic load reduction structure for a boiler body, wherein a fluid pressure damper is interposed between the steel structure and the steel frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4360498A JPH11241805A (en) | 1998-02-25 | 1998-02-25 | Earthquake load reducing structure for boiler main body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4360498A JPH11241805A (en) | 1998-02-25 | 1998-02-25 | Earthquake load reducing structure for boiler main body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11241805A true JPH11241805A (en) | 1999-09-07 |
Family
ID=12668442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4360498A Pending JPH11241805A (en) | 1998-02-25 | 1998-02-25 | Earthquake load reducing structure for boiler main body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11241805A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007068802A2 (en) * | 2005-12-15 | 2007-06-21 | Foster Wheeler Energia Oy | Method of and apparatus for supporting walls of a power boiler |
| CN102410524A (en) * | 2011-10-31 | 2012-04-11 | 中国电力工程顾问集团华东电力设计院 | Suspended type boiler device |
| CN108592000A (en) * | 2018-02-12 | 2018-09-28 | 中国恩菲工程技术有限公司 | For the damping assembly of boiler, boiler and its heating surface oscillation damping method |
-
1998
- 1998-02-25 JP JP4360498A patent/JPH11241805A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007068802A2 (en) * | 2005-12-15 | 2007-06-21 | Foster Wheeler Energia Oy | Method of and apparatus for supporting walls of a power boiler |
| WO2007068802A3 (en) * | 2005-12-15 | 2009-08-27 | Foster Wheeler Energia Oy | Method of and apparatus for supporting walls of a power boiler |
| AU2006325190B2 (en) * | 2005-12-15 | 2010-05-20 | Foster Wheeler Energia Oy | Method of and apparatus for supporting walls of a power boiler |
| US8393304B2 (en) | 2005-12-15 | 2013-03-12 | Foster Wheeler Energia Oy | Method of and apparatus for supporting walls of a power boiler |
| CN102410524A (en) * | 2011-10-31 | 2012-04-11 | 中国电力工程顾问集团华东电力设计院 | Suspended type boiler device |
| CN108592000A (en) * | 2018-02-12 | 2018-09-28 | 中国恩菲工程技术有限公司 | For the damping assembly of boiler, boiler and its heating surface oscillation damping method |
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