JP2019127781A - External scaffolding for seismic isolation structure - Google Patents

External scaffolding for seismic isolation structure Download PDF

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JP2019127781A
JP2019127781A JP2018010947A JP2018010947A JP2019127781A JP 2019127781 A JP2019127781 A JP 2019127781A JP 2018010947 A JP2018010947 A JP 2018010947A JP 2018010947 A JP2018010947 A JP 2018010947A JP 2019127781 A JP2019127781 A JP 2019127781A
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carriage
support plate
bolt
seismic isolation
head
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JP7013006B2 (en
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▲禊▼ 中村
Misogi Nakamura
▲禊▼ 中村
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CHUNICHI SOUGYO CORP
Chunichi Sougyo Corp
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CHUNICHI SOUGYO CORP
Chunichi Sougyo Corp
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Abstract

To use one headed bolt to connect a support plate to a carriage and protect the carriage wherein a support plate is fixed to a lower end of an external scaffolding, and the carriage is separable below the support plate.SOLUTION: In an external scaffolding erected outside a seismic isolation structure, a support plate 20 is fixed to a lower end of a building frame constituting the external scaffolding, and a carriage 23 is detachably disposed on the lower surface side of the support plate 20. A bolt insertion hole 21 is provided in the support plate 20, and an attaching hole 27 having a female screw is provided through the carriage 23 in the vertical direction. A headed bolt 41 can be attached by being replaced from the upper side and the lower side of the carriage 23 through the holes 21 and 27.SELECTED DRAWING: Figure 10

Description

本発明は、免震構造物の構築、改装時に、免震構造物の外部に立設される外部足場に関する。   The present invention relates to an external scaffold that is erected outside of a seismic isolation structure at the time of construction and remodeling of the seismic isolation structure.

従来、免震構造物の外部足場として、その建枠の下端にねじ軸を介して、ボールベアリングを設け、該ねじ軸にプレートを螺着して昇降可能に設け、外部足場の組み立て時には、プレートを回転して接地し、該プレートで荷重を支持してボールベアリングの移動を阻止し、また、外部足場の組立て後は、プレートを回転して上動し、ボールベアリングを接地させてその移動を許容するようにしたものが知られている。   Conventionally, as an external scaffold for a base-isolated structure, a ball bearing is provided at the lower end of the building frame via a screw shaft, and a plate is screwed to the screw shaft so that it can be moved up and down. To prevent the ball bearing from moving by supporting the load on the plate, and after assembling the external scaffold, rotate the plate to move up and ground the ball bearing to prevent the movement. It is known to allow.

前記従来のものにおいては、外部足場を解体して各部品を蔵置、搬送する場合、その取扱いにより、他物が前記ボールベアリング等に当り、これが損傷するおそれがある。   In the conventional apparatus, when the external scaffold is disassembled and each part is stored and transported, there is a risk that other objects will hit the ball bearing or the like due to the handling, and the parts may be damaged.

そこで本発明は、前記の課題を解決する外部足場を提供することを目的とするものである。   Then, this invention aims at providing the external scaffold which solves the said subject.

前記の課題を解決するために、請求項１記載の発明は、免震構造物の外部に立設される外部足場であって、該外部足場を構成する建枠の下端に支持板を固設し、該支持板の下面側に、上側に載置板を有する台車を配置し、前記支持板にボルト挿通孔を貫通して設け、前記台車には、前記支持板のボルト挿通孔に対応する位置に、上下方向に貫通する取付孔を、少なくともその一部に雌ねじを有して設け、頭部付ボルトを、前記支持板の上側より、該支持板のボルト挿通孔に挿通して、前記台車の取付孔の雌ねじに螺着することにより、前記支持板と前記台車とを分離可能に連結し、前記頭付きボルトを取り外して、これを台車の下方より前記取付孔に螺着して付け替えることにより、頭部付ボルトを、その頭部を台車の下端部より下方へ突出させて台車に保持するようにしたことを特徴とするものである。   In order to solve the above-mentioned problems, the invention according to claim 1 is an external scaffold erected on the outside of the seismic isolation structure, and a supporting plate is fixedly provided at the lower end of a frame that constitutes the external scaffold. And a carriage having a placement plate on the upper side is disposed on the lower surface side of the support plate, the support plate is provided through the bolt insertion holes, and the carriage corresponds to the bolt insertion holes of the support plate. At the position, an attachment hole penetrating in the vertical direction is provided with a female screw at least in part, and a headed bolt is inserted into the bolt insertion hole of the support plate from the upper side of the support plate, The support plate and the carriage are separably connected by screwing into the female screw of the mounting hole of the carriage, the headed bolt is removed, and this is screwed into the attachment hole from below the carriage to be replaced. The bolt with a head protrudes downward from the lower end of the carriage. It is characterized in that it has to hold the carriage by.

請求項２記載の発明は、請求項１記載の発明において、前記頭部付ボルトを、前記支持板の上側より前記台車の取付孔に螺着して正逆回転することにより、その頭部付ボルトの先端部が前記台車の下端部より突出又は退入するようにしたことを特徴とするものである。   According to a second aspect of the present invention, in the first aspect of the present invention, the head-attached bolt is screwed into the mounting hole of the carriage from the upper side of the support plate and rotated forward and reverse. The front end of the bolt protrudes or retracts from the lower end of the carriage.

請求項３記載の発明は、請求項１又は２記載の発明において、前記台車の載置板上に、前記支持板の上方への移動を規制する規制部材を設けたことを特徴とするものである。   The invention described in claim 3 is characterized in that, in the invention described in claim 1 or 2, a restricting member for restricting the upward movement of the support plate is provided on the mounting plate of the carriage. is there.

請求項４記載の発明は、請求項１又は２又は３記載の発明において、前記台車は、ボールベアリングで移動するようにしたことを特徴とするものである。   The invention according to claim 4 is characterized in that, in the invention according to claim 1, 2 or 3, the carriage is moved by a ball bearing.

請求項１記載の発明によれば、頭部付ボルトを、台車の上側、すなわち、支持板の上側より、支持板のボルト挿通孔に挿通して台車に形成した取付孔に螺着することにより、支持板と台車を分離可能に連結でき、更に、前記頭部付ボルトを外して、これを台車の下側に付け替えることにより、この頭部付ボルトにより台車を保護することができる。したがって、支持板と台車の取付けと、台車の保護を頭付ボルトを共用して行える。   According to the first aspect of the present invention, the headed bolt is inserted into the mounting hole formed in the carriage by inserting the bolt with the head through the bolt insertion hole from the upper side of the carriage, that is, the upper side of the support board. The support plate and the carriage can be connected to each other in a separable manner, and the carriage with the head can be protected by removing the bolt with the head and replacing it with the lower side of the carriage. Therefore, the mounting of the support plate and the carriage and the protection of the carriage can be performed by sharing the head bolt.

更に、請求項２記載の発明によれば、頭部付ボルトの正逆回転により、台車を移動可能状態と、移動阻止状態にすることができる。   Furthermore, according to the second aspect of the present invention, the carriage can be placed in the movable state and in the movement blocked state by forward and reverse rotation of the headed bolt.

本発明の免震構造物用の外部足場の設置状態を示す図。The figure which shows the installation state of the external scaffold for seismic isolation structures of this invention. 本発明の外部足場における建枠と支持板を示す斜視図。The perspective view which shows the frame and support plate in the external scaffold of this invention. 図２の支持板と台車とを組付けた斜視図。The perspective view which assembled the support plate of FIG. 2, and the trolley | bogie. 図３の台車の平面図。The top view of the trolley | bogie of FIG. 図４の側面図。The side view of FIG. 図４の下面図。The bottom view of FIG. 図４の台車に支持板を組付けた平面図。The top view which attached the support plate to the trolley | bogie of FIG. 図７においてボールベアリングを有する部分で切断した側断面図。FIG. 8 is a side cross-sectional view cut at a portion having a ball bearing in FIG. 7. 図７において支持板の無ねじ孔部で切断した側断面図。FIG. 8 is a side cross-sectional view of the support plate cut at a non-threaded hole in FIG. 7; 図９の状態において、支持板を頭部付ボルトで台車に締付けた状態の側断面図。FIG. 10 is a side cross-sectional view of a state where the support plate is fastened to the carriage with a head-attached bolt in the state of FIG. 9. 図１０の状態から頭部付ボルトを緩めて台車を移動可能状態にした側断面図。FIG. 11 is a side sectional view in which the carriage is moved from the state shown in FIG. 頭部付ボルトを付け替えて、ボールベアリングを保護した側断面図。The side sectional view which changed the bolt with a head and protected the ball bearing.

本発明の免震構造物用の外部足場の実施例を図に基づいて説明する。
［実施例１］
図１において、１は免震装置を有する建物等の免震構造物で、その地下空間部２内には、下部躯体である基礎３と、上部躯体である地中梁４間に位置して免震ゴム等からなる免震装置５が介在され、地中梁４上に１階スラブ６が設けられている。 An example of an external scaffold for a seismic isolation structure according to the present invention will be described with reference to the drawings.
Example 1
In FIG. 1, reference numeral 1 denotes a seismic isolation structure such as a building having a seismic isolation device, and the underground space 2 is located between a foundation 3 as a lower frame and an underground beam 4 as an upper frame. A seismic isolation device 5 made of seismic isolation rubber or the like is interposed, and a first floor slab 6 is provided on the underground beam 4.

免震構造物１は上記のように構成されているため、地震時において、水平方向への揺れが発生した場合には免震装置５を境として、下部躯体と１階スラブ６を含む上部躯体とが相対的に、反対方向に揺れ動き、免震機能を発揮する。   Since the seismic isolation structure 1 is configured as described above, when a horizontal swing occurs during an earthquake, the upper chassis including the lower chassis and the first-floor slab 6 is separated from the seismic isolation system 5. And oscillates in the opposite direction and exhibits seismic isolation function.

次に、外部足場７について説明する。   Next, the external scaffold 7 will be described.

外部足場７は、図１に示すように、一対の建枠８，９を、建物１に対して前後に配置するとともに、これら相互を連結枠で連結して、枠組み足場として形成され、連結部材１０で建物等の構造物に沿って立設される。   As shown in FIG. 1, the external scaffold 7 is formed as a framework scaffold by arranging a pair of frame frames 8 and 9 in the front and back with respect to the building 1 and connecting these with one another by a connecting frame. At 10, it will be erected along a structure such as a building.

前記各建枠８，９は、図１，図２に示すように、金属製のパイプよりなる脚柱１１と、雄ねじからなるねじ軸１２とで構成されている。   As shown in FIGS. 1 and 2, each of the construction frames 8 and 9 is composed of a pedestal 11 made of a metal pipe and a screw shaft 12 made of a male screw.

各建枠８，９は同一構造であるため、以下、一方の建枠８について説明する。   Since each building frame 8, 9 has the same structure, one building frame 8 will be described below.

前記ねじ軸１２の外周には、図２に示すように、該ねじ軸１２に螺着する雌ねじを有する支承部材１３が回転可能に設けられており、該支承部材１３よりも上方へ突出するねじ軸１２を、前記脚柱１１の下部内に挿入し、前記脚柱１１の下端部を前記支承部材１３の上面に摺動可能に載置するようになっている。前記支承部材１３には操作ハンドル１４が固設されている。   As shown in FIG. 2, a support member 13 having a female screw that is screwed onto the screw shaft 12 is rotatably provided on the outer periphery of the screw shaft 12, and the screw projects upward from the support member 13. The shaft 12 is inserted into the lower portion of the pedestal 11, and the lower end of the pedestal 11 is slidably mounted on the upper surface of the support member 13. An operation handle 14 is fixed to the support member 13.

したがって、操作ハンドル１４により支承部材１３を正逆回転して昇降することにより、脚柱１１が昇降するジャッキ機構を構成している。   Therefore, by moving the support member 13 forward and reverse by the operation handle 14 and moving it up and down, a jack mechanism that raises and lowers the pillar 11 is configured.

前記ねじ軸１２の下端には、ねじ軸１２、すなわち、建枠８を支承する支持板２０が、ねじ軸１２の軸芯と直交して固設されている。該支持板２０は、図２、図７に示すように平面形状が略正方形に形成され、その四隅部に位置して４個の無ねじ状のボルト挿通孔２１が表裏方向に貫通して形成されている。   At the lower end of the screw shaft 12, a screw shaft 12, that is, a support plate 20 for supporting the frame 8 is fixed at right angles to the axis of the screw shaft 12. As shown in FIGS. 2 and 7, the support plate 20 is formed in a substantially square planar shape, and is formed by four screw-less bolt insertion holes 21 penetrating in the front and back directions at the four corners thereof. Has been.

前記支持板２０の下面側には台車２３が、支持板２０に対して分離可能に取付けられるようになっている。   A carriage 23 is detachably attached to the support plate 20 on the lower surface side of the support plate 20.

該台車２３は、図８に示すように、前記支持板２０を載置する平板状の載置板２４と、該載置板２４の周縁から下方へ垂設された周壁２５と、ボールベアリング４０と底板５０を有し、内部に収納室２６を有する。   As shown in FIG. 8, the carriage 23 includes a flat plate-shaped mounting plate 24 on which the support plate 20 is mounted, a peripheral wall 25 vertically suspended from the periphery of the mounting plate 24, and a ball bearing 40. And a bottom plate 50, and has a storage chamber 26 inside.

前記台車２３には、図４，図９に示すように、載置板２４上に前記支持板２０を所定位置、すなわち、前記ねじ軸１２の軸芯Ｏ１と、載置板２０の中心Ｏ２とを略同芯状に配置した状態において、前記支持板２０のボルト挿通孔２１に同軸状で対応する位置に、４個の取付孔２７が上下方向に貫通形成されている。前記取付孔２７は、図の実施例では、図９に示すように、前記載置板２４に形成した無ねじ孔２４ａと、底板５０に形成した無ねじ孔５０ａと、収納室２６とで形成されている。   As shown in FIGS. 4 and 9, the carriage 23 has the support plate 20 placed on the mounting plate 24 at predetermined positions, that is, the axis O1 of the screw shaft 12 and the center O2 of the mounting plate 20. In the state where are arranged substantially concentrically, four mounting holes 27 are formed in the vertical direction at positions corresponding to the bolt insertion holes 21 of the support plate 20 coaxially. In the embodiment shown in the figure, the mounting hole 27 is formed by a screwless hole 24a formed in the mounting plate 24, a screwless hole 50a formed in the bottom plate 50, and the storage chamber 26, as shown in FIG. Has been.

また、前記底板５０側の無ねじ穴５０ａの上面側には雌ねじ５２ａを有するナット５２が同芯状に固設されている。したがって、取付孔２７は、その少なくとも一部に雌ねじ５２ａを有する。   Further, a nut 52 having a female screw 52a is coaxially fixed on the upper surface side of the screwless hole 50a on the bottom plate 50 side. Therefore, the mounting hole 27 has a female screw 52a at least at a part thereof.

なお、このナット５２は、前記のように底板５０に溶接して固設したが、載置板２４の下面側に溶接して固設し、取付孔２７の少なくとも一部に雌ねじ５２ａが設けられていればよい。   The nut 52 is welded and fixed to the bottom plate 50 as described above. However, the nut 52 is welded and fixed to the lower surface side of the mounting plate 24, and a female screw 52a is provided in at least a part of the mounting hole 27. It only has to be.

前記、載置板２４上には、図４に示すように、その軸芯Ｏ２を通る線Ｘ１−Ｘ１方向の両側部に位置して、線Ｘ１−Ｘ１方向と直交する方向に長い、第１規則部材２９，２９が相互に平行して対向配置されている。該第１規制部材２９，２９は、直立壁で形成され、かつ、図４，図７に示すように、該第１規制部材２９，２９相互の対面距離Ｌ１は、前記支持板２０における線Ｘ１−Ｘ１方向の両端面間距離Ｌ２と略同等に形成され、第１規制部材２９，２９間に支持板２０を摺動可能に嵌合できるようになっている。   On the mounting plate 24, as shown in FIG. 4, it is located on both sides in the direction of the line X1-X1 passing through the axis O2, and is long in the direction orthogonal to the direction of the line X1-X1. The regular members 29, 29 are disposed to face each other in parallel. The first restricting members 29, 29 are formed of upright walls, and as shown in FIGS. 4 and 7, the facing distance L1 between the first restricting members 29, 29 is a line X1 on the support plate 20. The distance L2 between the end faces in the -X1 direction is substantially equal, and the support plate 20 can be slidably fitted between the first restricting members 29, 29. As shown in FIG.

前記載置板２４上における、前記線Ｘ１−Ｘ１方向と直交する線Ｙ１−Ｙ１方向の両側部には、図４，５に示すように、第２規制部材３０，３０が相互に平行して対向配置されている。   As shown in FIGS. 4 and 5, second restricting members 30, 30 are parallel to each other on both sides of the mounting plate 24 in the direction of the line Y 1 -Y 1 perpendicular to the direction of the line X 1 -X 1. It is arranged oppositely.

該第２規制部材３０，３０は前記第１規制部材２９，２９の長手方向と直交する方向に長く形成され、その横断面形状、すなわち、Ｙ１−Ｙ１方向の断面形状は、図５に示すように、立上り片３１と、その上端から軸芯Ｏ２側へ折曲して突出する係止片３２からなる逆Ｌ字状に形成され、軸芯Ｏ２側と長手方向の両端部が開口する係止溝３３が形成されている。   The second restricting members 30, 30 are formed long in the direction orthogonal to the longitudinal direction of the first restricting members 29, 29, and the cross-sectional shape thereof, that is, the cross-sectional shape in the Y1-Y1 direction is as shown in FIG. Are formed in an inverted L shape consisting of a rising piece 31 and a locking piece 32 which is bent and protrudes from the upper end to the axis O2 side, and the both ends of the axis O2 side and the longitudinal direction are open. The groove 33 is formed.

前記係止溝３３の高さＤ１は、前記支持板２１の厚みＤ２より若干長く形成されている。更に、前記係止溝３３，３３における奥面３３ａ，３３ａ間距離Ｌ４は、前記支持板２１の線Ｙ１−Ｙ１方向の両端面距離Ｌ２より長く形成され、また、両係止片３２，３２の先端間距離Ｌ５は、支持板２１の両端面距離Ｌ２より短く形成されている。   The height D1 of the locking groove 33 is formed slightly longer than the thickness D2 of the support plate 21. Further, the distance L4 between the back surfaces 33a and 33a in the locking grooves 33 and 33 is formed to be longer than the distance L2 between the both end surfaces of the support plate 21 in the line Y1-Y1 direction, and between the locking pieces 32 and 32. The distance L5 between the tips is formed shorter than the distance L2 between the both end faces of the support plate 21.

上記構造により、支持板２４を、図４のＹ１−Ｙ１線方向において上下方向に傾けて一方の端部を一方の係止溝３３の奥面３３ａまで挿入し、その後他方の端部を落として他方の係止溝３３ａ内に挿入移動することにより、支持板２０と載置板２４とを相対的に全方向への移動を規制して組付けることができ、かつ、支持板２０の上方への移動を規制するようになっている。   With the above structure, the support plate 24 is tilted in the vertical direction in the Y1-Y1 line direction of FIG. 4 and one end is inserted to the inner surface 33a of one locking groove 33, and then the other end is dropped. By inserting and moving into the other locking groove 33a, the support plate 20 and the mounting plate 24 can be assembled with their movements relatively restricted in all directions, and above the support plate 20. To regulate the movement of

前記収納室２６内には、図６，図８に示すように、前記線Ｘ１−Ｘ１及び線Ｙ１−Ｙ１方向の夫々の両側部に位置して夫々ボールベアリング４０が設けられており、各ボールベアリング４０のボールの一部が、図８に示すように、前記周壁２５の下端２５ａよりも下方へ突出し、このボールベアリング４０により、台車２３が平面上の全方向に移動できるようになっている。   In the storage chamber 26, as shown in FIGS. 6 and 8, ball bearings 40 are provided on both sides in the direction of the lines X1-X1 and Y1-Y1, respectively. As shown in FIG. 8, a part of the ball of the bearing 40 protrudes below the lower end 25a of the peripheral wall 25, and the ball bearing 40 enables the carriage 23 to move in all directions in a plane. .

前記支持板２０のボルト挿通孔２１と前記載置板２４の取付孔２７には、図１０〜図１２に示す頭部付ボルト４１が共通して備えられるようになっている。   A bolt 41 with a head shown in FIGS. 10 to 12 is commonly provided in the bolt insertion hole 21 of the support plate 20 and the mounting hole 27 of the mounting plate 24 described above.

該頭部付ボルト４１としては、例えば図１０，図１２に示すような、雄ねじ部４１ａと、該雄ねじ部４１ａより大径の頭部４１ｂを有する頭部付ボルトを用いるもので、図の実施例では大径頭部と環状部を有するアイボルトを使用した。   As the head-attached bolt 41, for example, a head-attached bolt having a male screw portion 41a and a head portion 41b having a larger diameter than the male screw portion 41a as shown in FIGS. 10 and 12 is used. In the example, an eyebolt having a large-diameter head and an annular part was used.

前記頭部付ボルト４１の雄ねじ部４１ａの長さは、図１０に示すように、頭部付ボルト４１の雄ねじ部４１ａをボルト挿通孔２１に挿通するとともに前記取付孔２７のナット５２のねじ孔５２ａに螺合して締付けた場合に、その頭部付ボルト４１の先端部４１ｃが、底板５０の無ねじ孔５０ａを通じて前記ボールベアリング４０の下端部４０ａより下方へ突出し、また、図１１に示すように該頭部付ボルト４１を緩めて上方へ移動させた場合には、その先端部４１ｃがボールベアリング４０の下端部４０ａより上方へ退入するようになっている。   As shown in FIG. 10, the length of the male screw portion 41 a of the head-attached bolt 41 is such that the male screw portion 41 a of the head-attached bolt 41 is inserted into the bolt insertion hole 21 and the screw hole of the nut 52 of the mounting hole 27. When screwed into 52a and tightened, the tip 41c of the bolt 41 with the head protrudes downward from the lower end 40a of the ball bearing 40 through the screwless hole 50a of the bottom plate 50, and also shown in FIG. As described above, when the head-attached bolt 41 is loosened and moved upward, the tip end portion 41 c is retracted upward from the lower end portion 40 a of the ball bearing 40.

更に、該頭部付ボルト４１は、これを取付孔２７より、上方へ外すとともに、上下を反転して、図１２に示すように台車２３の下方側より前記ナット５２に螺着することにより、頭部付ボルト４１の頭部４１ｂがボールベアリング４０の下端部４０ａより下方位置に突出するようになっている。   Further, the head-attached bolt 41 is removed upward from the mounting hole 27 and turned upside down, and screwed onto the nut 52 from the lower side of the carriage 23 as shown in FIG. The head 41 b of the bolt 41 with the head protrudes from the lower end 40 a of the ball bearing 40 to a lower position.

前記、底板５０には前記ボールベアリング４０の下部を突出させるための貫通孔５１が形成されている。   The bottom plate 50 is formed with a through hole 51 for causing the lower portion of the ball bearing 40 to protrude.

以上の構成において、外部足場１０の組立て時には、各建枠８，９の支持板２０を、図７〜図９に示すように、台車２３の第１規制部材２９，２９と第２規制部材３０，３０の間に嵌合し、建枠であるねじ軸１２と台車２３とを組付ける。   In the above configuration, when the external scaffold 10 is assembled, the support plates 20 of the building frames 8 and 9 are attached to the first restriction members 29 and 29 and the second restriction member 30 of the carriage 23 as shown in FIGS. , 30 and the screw shaft 12 which is a building frame and the carriage 23 are assembled.

次に、頭部付ボルト４１を、図１０に示すように、支持板２０の上側よりボルト挿通孔２１に挿通するとともに、この無ねじ孔２１と対応する台車２３側の取付孔２７に螺着する。この際、頭部付ボルト４１を図１０に示すように、その先端４１ｃがボールベアリング４０の下端部４０ａより下方へ突出するように締付ける。   Next, as shown in FIG. 10, the head-attached bolt 41 is inserted into the bolt insertion hole 21 from the upper side of the support plate 20 and is screwed into the mounting hole 27 on the side of the carriage 23 corresponding to the screwless hole 21. To do. At this time, as shown in FIG. 10, the head bolt 41 is tightened so that its tip 41 c protrudes downward from the lower end 40 a of the ball bearing 40.

これにより、図１０に示すように、支持板２０は、頭部付ボルト４１の頭部４１ｂと載置板２４で挟持されて連結され、かつ、頭部付ボルト４１の先端４１ｃがボールベアリング４０の下端部４０ａより下方へ突出した状態に保持することができる。   As a result, as shown in FIG. 10, the support plate 20 is sandwiched and connected by the head 41 b of the head-mounted bolt 41 and the mounting plate 24, and the tip 41 c of the head-mounted bolt 41 is connected to the ball bearing 40. It can hold | maintain in the state protruded below from the lower end part 40a.

そして、上記の建枠８，９からなる外部足場７を、図１に示すように免震構造の建物１に連結部材１０で支持し立設する。これにより、頭部付ボルト４１の先端４１ｃが接地し、台車２３の水平移動が阻止される。   And the external scaffold 7 which consists of said construction frames 8 and 9 is supported by the connection member 10 in the building 1 of a seismic isolation structure, as shown in FIG. Thereby, the tip 41c of the bolt 41 with the head is grounded, and the horizontal movement of the carriage 23 is prevented.

なお、前記台車２３は、図示しない鉄板等の敷板上に載置する。   The carriage 23 is placed on a floor plate such as an iron plate (not shown).

次に、外部足場の立設後、頭部付ボルト４１を緩めて図１１に示すように上昇させ、その下端４１ｃをボールベアリング４０の下端部４０ａより上部へ退避させ、ボールベアリング４０を接地させる。   Next, after the external scaffolding is erected, the bolt 41 with the head is loosened and raised as shown in FIG. 11, and the lower end 41 c is retreated above the lower end 40 a of the ball bearing 40 to ground the ball bearing 40. .

これにより地震時において、免震構造の建物の水平移動に追従して台車２３が水平移動し、外部足場を水平移動させることができ、外部足場の変形または破損を防止できる。   Thereby, in the event of an earthquake, the carriage 23 can move horizontally following the horizontal movement of the building having the base-isolated structure, and the external scaffold can be moved horizontally, and deformation or breakage of the external scaffold can be prevented.

なお、図１１に示すように、頭部付ボルト４１を緩めた状態において、頭部４１ｂと支持板２０との間に大きな隙間Ｄ３生じた場合には第２規制部材３０により、支持板２０の上方への移動が規制される。   As shown in FIG. 11, when a large gap D3 occurs between the head 41b and the support plate 20 in a state where the head-attached bolt 41 is loosened, the second restricting member 30 causes the support plate 20 to Upward movement is restricted.

次に、外部足場の不使用時について説明する。   Next, the non-use time of the external scaffold will be described.

外部足場の不使用時において、これを蔵置、運搬する場合には、図１０又は図１１の状態から頭部付ボルト４１を外し、その後、支持板２０を、前記組付け時とは逆の操作で台車２３より外す。これにより、支持板を備えたねじ軸１２と、台車２３とを分離でき、蔵置、運搬が容易になる。   When storing and transporting the external scaffold when not in use, the head-attached bolt 41 is removed from the state shown in FIG. 10 or FIG. 11, and then the support plate 20 is operated in the reverse of the assembly. Remove from the truck 23 at. Thereby, the screw shaft 12 provided with the support plate and the carriage 23 can be separated, and storage and transportation become easy.

更に、前記取外した頭部付ボルト４１を、図１２に示すように、上下逆向きに反転して、台車２３の下側から底板５０の取付孔２７を構成する無ねじ孔５０ａを通じて挿入するとともに、ナット５２に螺着する。これにより図１２に示すように頭部付ボルト４１の頭部４１ｂがボールベアリング４０の下端部４０ａより下方へ突出する。   Further, as shown in FIG. 12, the removed bolt 41 with the head is inverted upside down and inserted from the lower side of the carriage 23 through the screwless hole 50a constituting the mounting hole 27 of the bottom plate 50. , Screw on the nut 52. Thereby, as shown in FIG. 12, the head portion 41 b of the head-attached bolt 41 projects downward from the lower end portion 40 a of the ball bearing 40.

このように頭部付ボルト４１の頭部４１ｂがボールベアリング４０の下端部４０ａより突出することにより、運搬時等の取扱い時において作業者が、台車２３を、そのボールベアリング４０側から落下させたり、他物に当った場合に、他物が頭部付ボルト４１の頭部に当ることにより、ボールベアリング４０を衝撃より保護することができる。   Thus, the head 41b of the bolt 41 with the head protrudes from the lower end portion 40a of the ball bearing 40, so that an operator can drop the carriage 23 from the ball bearing 40 side during handling such as transportation. When the ball hits another object, the ball bearing 40 can be protected from impact by the other object hitting the head of the head bolt 41.

したがって、１本の頭部付ボルト４１に、支持板２０と台車２３との取付け機能と、台車の移動可能状態と移動阻止状態の保持機能と、ボールベアリング４０の保護機能をもたせることができる。   Therefore, one head-mounted bolt 41 can be provided with a function of attaching the support plate 20 and the carriage 23, a function of holding the carriage in a movable state and a movement blocking state, and a function of protecting the ball bearing 40.

更に、蔵置、運搬時において、頭部付ボルト４１を台車２３に保持させておくことができ、その頭部付ボルト４１の紛失を防止することができる。
［その他の実施例］
前記実施例１では、頭部付ボルトとしてアイボルトを用いたが、アイボルトの他に通常の六角頭部のボルト等を用いても良い。 Furthermore, the head-mounted bolt 41 can be held on the carriage 23 during storage and transportation, and the loss of the head-mounted bolt 41 can be prevented.
[Other Examples]
In the first embodiment, an eye bolt is used as the head-attached bolt, but a normal hexagon head bolt or the like may be used in addition to the eye bolt.

１ 免震構造物
７ 外部足場
８，９ 建枠
２０ 支持板
２１ ボルト挿通孔
２３ 台車
２４ 載置板
２７ 取付孔
４０ ボールベアリング
４０ａ 下端部
４１ 頭部付ボルト
４１ｂ 頭部
４１ｃ 先端部
５２ ナット
５２ａ 雌ねじ DESCRIPTION OF SYMBOLS 1 Seismic isolation structure 7 External scaffolding 8, 9 Frame 20 Support plate 21 Bolt insertion hole 23 Bogie 24 Mounting plate 27 Mounting hole 40 Ball bearing 40a Lower end 41 Headed bolt 41b Head 41c Tip 52 Nut 52a Female screw

Claims (4)

免震構造物の外部に立設される外部足場であって、該外部足場を構成する建枠の下端に支持板を固設し、該支持板の下面側に、上側に載置板を有する台車を配置し、前記支持板にボルト挿通孔を貫通して設け、前記台車には、前記支持板のボルト挿通孔に対応する位置に、上下方向に貫通する取付孔を、少なくともその一部に雌ねじを有して設け、頭部付ボルトを、前記支持板の上側より、該支持板のボルト挿通孔に挿通して、前記台車の取付孔の雌ねじに螺着することにより、前記支持板と前記台車とを分離可能に連結し、前記頭付きボルトを取り外して、これを台車の下方より前記取付孔に螺着して付け替えることにより、頭部付ボルトを、その頭部を台車の下端部より下方へ突出させて台車に保持するようにしたことを特徴とする免震構造物用の外部足場。   An external scaffold standing upright on the outside of a seismic isolation structure, wherein a support plate is fixed to the lower end of a frame forming the external scaffold, and a mounting plate is provided on the upper side on the lower surface side of the support plate A bogie is disposed, and a bolt insertion hole is provided through the support plate, and at least a part of an attachment hole vertically penetrating at a position corresponding to the bolt insertion hole of the support plate is provided in the bogie The support plate is provided with a female screw, and a headed bolt is inserted from the upper side of the support plate into the bolt insertion hole of the support plate and screwed to the female screw of the mounting hole of the carriage. The headed bolt is attached to the lower end portion of the carriage by disconnectably connecting the carriage, removing the headed bolt, and screwing it from the lower side of the carriage into the mounting hole. Seismic isolation characterized by protruding downward and being held on the carriage External scaffolding for the creation. 前記頭部付ボルトを、前記支持板の上側より前記台車の取付孔に螺着して正逆回転することにより、その頭部付ボルトの先端部が前記台車の下端部より突出又は退入するようにしたことを特徴とする請求項１記載の免震構造用の外部足場。   By screwing the bolt with the head into the mounting hole of the carriage from above the support plate and rotating in the forward and reverse directions, the tip of the bolt with the head protrudes or retracts from the lower end of the carriage. The external scaffold for a seismic isolation structure according to claim 1, which is configured as described above. 前記台車の載置板上に、前記支持板の上方への移動を規制する規制部材を設けたことを特徴とする請求項１又は２記載の免震構造物用の外部足場。   The outer scaffolding for the seismic isolation structure according to claim 1 or 2, further comprising a regulating member for regulating the upward movement of the support plate on the mounting plate of the carriage. 前記台車は、ボールベアリングで移動するようにしたことを特徴とする請求項１又は２又は３記載の免震構造物用の外部足場。   The said trolley | bogie was made to move with a ball bearing, The external scaffold for seismic isolation structures of Claim 1 or 2 or 3 characterized by the above-mentioned.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0628087U (en) * 1992-09-08 1994-04-15 株式会社フジタ Rolling tower leg structure
JPH0748873Y2 (en) * 1990-10-03 1995-11-08 政太郎 佐藤 Scaffolding jack
JPH08165796A (en) * 1994-12-12 1996-06-25 Shinwa Kk Sole plate for scaffold
JP3045667B2 (en) * 1996-07-02 2000-05-29 戸田建設株式会社 Flooring for scaffolding
JP2002371705A (en) * 2001-06-18 2002-12-26 Katsumura Construction Co Ltd Collapsible temporary scaffold device
JP2003045667A (en) * 2001-06-25 2003-02-14 Samsung Sdi Co Ltd Hole transport layer for organic electroluminescent device, organic electroluminescent device using it, and method of manufacture
JP2010185211A (en) * 2009-02-12 2010-08-26 Toda Constr Co Ltd Framed scaffolding

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0748873Y2 (en) * 1990-10-03 1995-11-08 政太郎 佐藤 Scaffolding jack
JPH0628087U (en) * 1992-09-08 1994-04-15 株式会社フジタ Rolling tower leg structure
JPH08165796A (en) * 1994-12-12 1996-06-25 Shinwa Kk Sole plate for scaffold
JP3045667B2 (en) * 1996-07-02 2000-05-29 戸田建設株式会社 Flooring for scaffolding
JP2002371705A (en) * 2001-06-18 2002-12-26 Katsumura Construction Co Ltd Collapsible temporary scaffold device
JP2003045667A (en) * 2001-06-25 2003-02-14 Samsung Sdi Co Ltd Hole transport layer for organic electroluminescent device, organic electroluminescent device using it, and method of manufacture
JP2010185211A (en) * 2009-02-12 2010-08-26 Toda Constr Co Ltd Framed scaffolding

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