JP6936603B2

JP6936603B2 - Vertical gutter structure

Info

Publication number: JP6936603B2
Application number: JP2017067570A
Authority: JP
Inventors: 宏司松本; 康真西井
Original assignee: Panasonic Corp; Daiwa House Industry Co Ltd; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Daiwa House Industry Co Ltd; Panasonic Holdings Corp
Priority date: 2017-03-30
Filing date: 2017-03-30
Publication date: 2021-09-15
Anticipated expiration: 2037-03-30
Also published as: JP2018168617A

Description

本発明は、縦樋構造に関する。 The present invention relates to a downspout structure.

特許文献１には、地盤の上に免震装置を介して免震構造物が設置され、地盤に取り付けられた下側の縦樋と、免震構造物に取り付けられた上側の縦樋とを、連結管群により連結した構造が記載されている。 In Patent Document 1, a seismic isolation structure is installed on the ground via a seismic isolation device, and a lower vertical trough attached to the ground and an upper vertical trough attached to the seismic isolation structure are provided. , The structure connected by the connecting pipe group is described.

この構造では、連結管群は、下側の縦樋に接着固定された下部連結管と、上側の縦樋に接着固定された上部連結管と、下部連結管及び上部連結管の間に装着された３つの中間連結管とから構成されている。連結管のそれぞれは、大寸筒状部と、大寸筒状部から下方に延長された小寸筒状部とで構成され、外周面に段差を有している。 In this structure, the connecting pipe group is mounted between the lower connecting pipe adhesively fixed to the lower downspout, the upper connecting pipe adhesively fixed to the upper downspout, and the lower connecting pipe and the upper connecting pipe. It is composed of three intermediate connecting pipes. Each of the connecting pipes is composed of a large-sized tubular portion and a small-sized tubular portion extending downward from the large-sized tubular portion, and has a step on the outer peripheral surface.

連結管のそれぞれは、上側の連結管の外周面の段差に、下側の連結管の上端面が当たった状態で、連結されている。 Each of the connecting pipes is connected in a state where the upper end surface of the lower connecting pipe is in contact with the step on the outer peripheral surface of the upper connecting pipe.

特開２００４−４４１１０号公報Japanese Unexamined Patent Publication No. 2004-44110

ところで、特許文献１に記載の構造では、上下の縦樋が熱により長手方向に伸長した際に、上下の縦樋や連結管群に負荷がかかって変形や破損が生じるおそれがある。 By the way, in the structure described in Patent Document 1, when the upper and lower downspouts are extended in the longitudinal direction by heat, the upper and lower downspouts and the connecting pipe group may be loaded and deformed or damaged.

また、特許文献１に記載の構造では、上下の縦樋が長手方向に熱収縮した際には、一番上の中間連結管に対する上部連結管の挿入長さが短くなり、風を受けたときにこの２つの連結管の連結状態が外れるおそれがある。 Further, in the structure described in Patent Document 1, when the upper and lower downspouts are thermally contracted in the longitudinal direction, the insertion length of the upper connecting pipe with respect to the uppermost intermediate connecting pipe is shortened, and when the wind is received. There is a risk that the connection state of these two connecting pipes will be disconnected.

上記事情に鑑みて、本発明の目的は、縦樋が熱伸縮した際に不具合が生じにくく、地震の際に縦樋の破損を抑制することのできる縦樋構造を提案すること、とする。 In view of the above circumstances, an object of the present invention is to propose a downspout structure that is less likely to cause problems when the downspout is thermally expanded and contracted and can suppress damage to the downspout in the event of an earthquake.

本発明に係る一態様の縦樋構造は、下記の構成を具備することを特徴とする。 One aspect of the downspout structure according to the present invention is characterized by having the following configuration.

一態様の縦樋構造は、上部構造体と下部構造体とこの間に位置する免震機構とを備え、前記上部構造体と前記下部構造体との水平方向の相対位置が前記免震機構を介して変化するように構成された免震建物に設けられる。 The vertical trough structure of one aspect includes an upper structure, a lower structure, and a seismic isolation mechanism located between them, and the relative position of the upper structure and the lower structure in the horizontal direction is via the seismic isolation mechanism. It is installed in a seismic isolated building that is configured to change.

一態様の縦樋構造は、前記上部構造体に取り付けられる上縦樋と、前記上縦樋の下方に位置する下縦樋と、前記上縦樋及び前記下縦樋を連通接続させる中間樋とを備える。 One aspect of the downspout structure includes an upper downspout attached to the upper structure, a lower downspout located below the upper downspout, and an intermediate downspout connecting the upper downspout and the lower downspout. To be equipped with.

前記中間樋は、前記中間樋の上部を構成する上筒部と、前記中間樋の下部を構成する下筒部と、を含む。 The intermediate gutter includes an upper cylinder portion forming an upper portion of the intermediate gutter and a lower cylinder portion forming a lower portion of the intermediate gutter.

前記上筒部は、前記上縦樋が上下方向にスライド可能に連通接続される上大筒部と、前記上大筒部から下方に延長され、前記上大筒部よりも外寸の小さい上小筒部とを有する。前記下筒部は、前記上小筒部に連通接続される下大筒部と、前記下大筒部から下方に延長され、前記下大筒部よりも外寸が小さく、前記下縦樋に連通接続される下小筒部とを有する。 The upper cylinder portion includes an upper cylinder portion in which the upper vertical gutter is slidably connected in the vertical direction, and an upper cylinder portion that extends downward from the upper cylinder portion and has an outer dimension smaller than that of the upper cylinder portion. And have. The lower cylinder portion communicates with the lower cylinder portion and the lower cylinder portion, and extends downward from the lower cylinder portion, has a smaller outer dimension than the lower cylinder portion, and communicates with the lower vertical gutter. It has a lower small cylinder part.

前記上小筒部の上下長さをＢ１、前記上小筒部の外寸をｄ１、前記下大筒部の上端部の内寸をＤ１、前記下大筒部の上端部の肉厚をｔ１、前記下小筒部の上下長さをＢ２、前記下小筒部の外寸をｄ２、前記下縦樋の上端部の内寸をＤ２、前記下縦樋の上端部の肉厚をｔ２としたときに、Ｂ１≦（１＋ｔ１／Ｄ１）（Ｄ１^２−ｄ１^２）^１／２、Ｂ２≦（１＋ｔ２／Ｄ２）（Ｄ２^２−ｄ２^２）^１／２の関係にある。 The vertical length of the upper small cylinder is B1, the outer dimension of the upper small cylinder is d1, the inner dimension of the upper end of the lower cylinder is D1, the wall thickness of the upper end of the lower cylinder is t1, and the above. When the vertical length of the lower barrel is B2, the outer dimension of the lower barrel is d2, the inner dimension of the upper end of the lower downspout is D2, and the wall thickness of the upper end of the lower downspout is t2. ^{a, B1 ≦ (1 + t1 /} D1) (D1 2 -d1 2) 1/2, in ^{B2 ≦ (1 + t2 / D2} ) (D2 2 -d2 2) 1/2 relationship.

本発明は、縦樋が熱伸縮した際に不具合が生じにくく、地震の際に縦樋の破損を抑制することのできる縦樋構造を提案することができるという効果を奏する。 The present invention has the effect of being able to propose a downspout structure that is less likely to cause problems when the downspout is thermally expanded and contracted and can suppress damage to the downspout in the event of an earthquake.

図１は、本発明に係る実施形態１の縦樋構造を概略的に示す正面図である。FIG. 1 is a front view schematically showing a downspout structure according to the first embodiment of the present invention. 図２Ａ，図２Ｂは、同上の縦樋構造の要部を示す正面断面図であり、図２Ａは、地震が起こる前の状態を示す図であり、図２Ｂは、地震が起こったときの状態を示す図である。2A and 2B are front sectional views showing a main part of the above-mentioned downspout structure, FIG. 2A is a view showing a state before an earthquake occurs, and FIG. 2B is a state when an earthquake occurs. It is a figure which shows. 図３は、同上の縦樋構造の中間樋が外れる瞬間の状態を示す概略的な図である。FIG. 3 is a schematic view showing a state at the moment when the intermediate gutter of the same vertical gutter structure is removed. 図４Ａは、同上の縦樋構造の下固定具を示す平面図であり、図４Ｂは、同上の下固定具を示す正面図である。FIG. 4A is a plan view showing the lower fixture of the above-mentioned downspout structure, and FIG. 4B is a front view showing the same-mentioned lower fixture. 図５Ａ、図５Ｂ、図５Ｃのそれぞれは、同上の下固定具の位置変更の様子を示す平面図である。5A, 5B, and 5C are plan views showing how the lower fixture is changed in position. 図６Ａ，図６Ｂは、同上の縦樋構造において、地震が起こったときに中間樋が外れる様子を順に示す正面図である。6A and 6B are front views showing in order how the intermediate gutter comes off when an earthquake occurs in the same vertical gutter structure. 図７は、同上の縦樋構造を示す正面図であり、地震後の修復状態を示す図である。FIG. 7 is a front view showing the above-mentioned downspout structure, and is a view showing a repaired state after an earthquake.

（実施形態１）
図１に示すように、実施形態１の縦樋構造１は、免震建物２に設けられる。 (Embodiment 1)
As shown in FIG. 1, the downspout structure 1 of the first embodiment is provided in the seismic isolated building 2.

まず、免震建物２について説明する。 First, the seismic isolated building 2 will be described.

免震建物２は、上部構造体２０と、下部構造体２１と、上部構造体２０及び下部構造体２１の間に位置する免震機構２２とを備える。免震建物２は、上部構造体２０と下部構造体２１との水平方向の相対位置が、免震機構２２を介して変化するように構成されている。下部構造体２１は、基礎を含み、上部構造体２０は、建物本体を含む。 The seismic isolation building 2 includes an upper structure 20, a lower structure 21, and a seismic isolation mechanism 22 located between the upper structure 20 and the lower structure 21. The seismic isolation building 2 is configured so that the horizontal relative positions of the upper structure 20 and the lower structure 21 change via the seismic isolation mechanism 22. The lower structure 21 includes a foundation, and the upper structure 20 includes a building body.

免震機構２２は、上部構造体２０を支え、上部構造体２０に伝わる地震の揺れを低減させるための免震材２３と、上部構造体２０の相対位置の変化を元に戻す力を付与する復元材（図示せず）とを備える。免震材２３は、例えば、ポリスチレンフォーム板と、その上に貼られたステンレス板と、その上に載せられたポリスチレンフォーム板とを含む。復元材は、下部構造体２１と上部構造体２０のそれぞれに固定されている。相対位置の残留変位は、最大で３０ｍｍ〜５０ｍｍとなる場合もある。 The seismic isolation mechanism 22 supports the superstructure 20 and imparts a seismic isolation material 23 for reducing the shaking of the earthquake transmitted to the superstructure 20 and a force for restoring the change in the relative position of the superstructure 20. It is equipped with a restoration material (not shown). The seismic isolation material 23 includes, for example, a polystyrene foam plate, a stainless steel plate attached on the polystyrene foam plate, and a polystyrene foam plate placed on the polystyrene foam plate. The restoration material is fixed to each of the lower structure 21 and the upper structure 20. The residual displacement of the relative position may be 30 mm to 50 mm at the maximum.

続いて、縦樋構造１について説明する。 Subsequently, the downspout structure 1 will be described.

縦樋構造１は、上部構造体２０に取り付けられる上縦樋３と、上縦樋３の下方に位置する下縦樋４と、上縦樋３及び下縦樋４を連通接続させる中間樋５とを備える。縦樋構造１はさらに、下縦樋４を下部構造体２１に固定する下固定具６と、上縦樋３を上部構造体２０に固定する上固定具７とを備える。縦樋構造１はさらに、下縦樋４の下端部に取り付けられ、下縦樋４と地中の排水構造８とを連通接続させるための排水カバー９をさらに備える。 The downspout structure 1 is an intermediate gutter 5 that connects the upper downspout 3 attached to the upper structure 20, the lower downspout 4 located below the upper downspout 3, and the upper downspout 3 and the lower downspout 4 in communication with each other. And. The downspout structure 1 further includes a lower fixture 6 for fixing the lower downspout 4 to the lower structure 21, and an upper fixture 7 for fixing the upper downspout 3 to the upper structure 20. The downspout structure 1 is further attached to the lower end of the lower downspout 4, and further includes a drainage cover 9 for communicating and connecting the lower downspout 4 and the underground drainage structure 8.

まず、上縦樋３について説明する。 First, the upper downspout 3 will be described.

上縦樋３は、直線状に延びた筒である。上縦樋３の断面形状の外形は、例えば正方形状であるが、円等のその他の形状であってもよい。上縦樋３は、例えば、硬質塩化ビニル樹脂製である。なお、上縦樋３は、ステンレスや銅などの金属製であってもよい。上縦樋３は、その上端部が、エルボ、横引き管、集水器等を介して、軒樋に連通接続される。 The upper downspout 3 is a cylinder extending in a straight line. The outer shape of the cross-sectional shape of the upper downspout 3 is, for example, a square shape, but other shapes such as a circle may be used. The upper downspout 3 is made of, for example, a hard vinyl chloride resin. The upper downspout 3 may be made of a metal such as stainless steel or copper. The upper end of the upper downspout 3 is communicated with the eaves gutter via an elbow, a horizontal pull pipe, a water collector, and the like.

上縦樋３は、上固定具７を介して上部構造体２０に固定される。上縦樋３の長さは、上縦樋３の下端が下部構造体２１よりも上方に位置するように設定されている。 The upper downspout 3 is fixed to the upper structure 20 via the upper fixing tool 7. The length of the upper downspout 3 is set so that the lower end of the upper downspout 3 is located above the lower structure 21.

続いて、下縦樋４について説明する。 Subsequently, the lower downspout 4 will be described.

図１、図２Ａ、図２Ｂに示すように、下縦樋４は、筒状の本体部４０と、本体部４０の上端部に取り付けられる筒状の接続部材４１とを含む。接続部材４１の上端部が、下縦樋４の上端部を構成している。 As shown in FIGS. 1, 2A, and 2B, the lower downspout 4 includes a cylindrical main body 40 and a cylindrical connecting member 41 attached to the upper end of the main body 40. The upper end of the connecting member 41 constitutes the upper end of the lower downspout 4.

本体部４０は、直線状に延びた筒である。本体部４０の断面形状の外形は、例えば正方形状であるが、円等のその他の形状であってもよい。本体部４０は、例えば、硬質塩化ビニル樹脂製である。なお、本体部４０は、ステンレスや銅などの金属製であってもよい。本体部４０の断面形状、外寸、内寸及び材質は、上縦樋３と同じであってもよい。本体部４０は、下固定具６を介して下部構造体２１に固定される。 The main body 40 is a cylinder extending in a straight line. The outer shape of the cross-sectional shape of the main body 40 is, for example, a square shape, but other shapes such as a circle may be used. The main body 40 is made of, for example, a rigid vinyl chloride resin. The main body 40 may be made of metal such as stainless steel or copper. The cross-sectional shape, outer dimensions, inner dimensions, and material of the main body 40 may be the same as those of the upper downspout 3. The main body 40 is fixed to the lower structure 21 via the lower fixture 6.

接続部材４１は、外寸が長手方向（上下方向）に亘って一定である。接続部材４１は、内寸が互いに異なる、上部分４１ａ、中間部分４１ｂ、及び下部分４１ｃを一体に含む。接続部材４１は、本体部４０に比べて肉厚（外寸と内寸の差の半分）が大きい。下部分４１ｃは、下方に向けて開口した矩形枠状の差込溝４１０と、差込溝４１０よりも内側に位置する内筒部４１１と、差込溝４１０よりも外側に位置する外筒部４１２とを含む。内筒部４１１と外筒部４１２のそれぞれは、中間部分４１ｂから下方に延長されている。 The outer dimensions of the connecting member 41 are constant over the longitudinal direction (vertical direction). The connecting member 41 integrally includes an upper portion 41a, an intermediate portion 41b, and a lower portion 41c having different inner dimensions. The connecting member 41 has a larger wall thickness (half the difference between the outer dimension and the inner dimension) than the main body 40. The lower portion 41c has a rectangular frame-shaped insertion groove 410 that opens downward, an inner cylinder portion 411 that is located inside the insertion groove 410, and an outer cylinder portion that is located outside the insertion groove 410. Includes 412 and. Each of the inner cylinder portion 411 and the outer cylinder portion 412 extends downward from the intermediate portion 41b.

内筒部４１１の外寸は、本体部４０の内寸よりも小さく、外筒部４１２の内寸は、本体部４０の外寸と同じか、それよりも若干大きい。差込溝４１０は、本体部４０の上端部を差し込むことの可能な寸法及び形状に設けられている。差込溝４１０には、接着剤が注入される。 The outer dimension of the inner cylinder portion 411 is smaller than the inner dimension of the main body portion 40, and the inner dimension of the outer cylinder portion 412 is the same as or slightly larger than the outer dimension of the main body portion 40. The insertion groove 410 is provided in a size and shape into which the upper end portion of the main body portion 40 can be inserted. An adhesive is injected into the insertion groove 410.

内筒部４１１の上下長さは、外筒部４１２の上下長さよりも短い。外筒部４１２は、内筒部４１１よりも下方に突出している。 The vertical length of the inner cylinder portion 411 is shorter than the vertical length of the outer cylinder portion 412. The outer cylinder portion 412 projects downward from the inner cylinder portion 411.

上部分４１ａの外寸、中間部分４１ｂの外寸、及び下部分４１ｃの外筒部４１２の外寸は、いずれも同じである。下部分４１ｃの内筒部４１１の内寸は、上部分４１ａの内寸よりも小さい。中間部分４１ｂの内寸は下側ほど小さい。中間部分４１ｂの上端の内寸は、上部分４１ａの内寸と同じであり、中間部分４１ｂの下端の内寸は、下部分４１ｃの内筒部４１１の内寸と同じである。 The outer dimensions of the upper portion 41a, the outer dimensions of the intermediate portion 41b, and the outer dimensions of the outer cylinder portion 412 of the lower portion 41c are all the same. The inner dimension of the inner cylinder portion 411 of the lower portion 41c is smaller than the inner dimension of the upper portion 41a. The inner dimension of the intermediate portion 41b is smaller toward the lower side. The inner dimension of the upper end of the intermediate portion 41b is the same as the inner dimension of the upper portion 41a, and the inner dimension of the lower end of the intermediate portion 41b is the same as the inner dimension of the inner cylinder portion 411 of the lower portion 41c.

本体部４０の上端部を接続部材４１の差込溝４１０に差し込むことで、本体部４０と接続部材４１とは、接着剤によって一体化されて、下縦樋４を形成する。本体部４０と接続部材４１との合計長さは、接続部材４１の上端が上部構造体２０よりも下方に位置するように設定されている。 By inserting the upper end portion of the main body portion 40 into the insertion groove 410 of the connecting member 41, the main body portion 40 and the connecting member 41 are integrated by an adhesive to form a lower downspout 4. The total length of the main body 40 and the connecting member 41 is set so that the upper end of the connecting member 41 is located below the upper structure 20.

続いて、中間樋５について説明する。 Next, the intermediate gutter 5 will be described.

図２Ａ、図２Ｂに示すように、中間樋５は、中間樋５の上部を構成する上筒部１０と、中間樋５の下部を構成する下筒部１１とを含む。ここで、中間樋５の上部とは、中間樋５のうち相対的に上方に位置する部分を意味し、中間樋５の下部とは、中間樋５のうち相対的に下方に位置する部分を意味し、中間樋５の上部と下部の境界は、中間樋５の上下方向の中間に限定されない。中間樋５は、例えば硬質塩化ビニル樹脂製である。なお、中間樋５は、上縦樋３及び下縦樋４の本体部４０に比べて、熱伸縮のしにくい材料で形成されてもよい。上筒部１０と下筒部１１のそれぞれは、本実施形態では、平断面正方形の角筒状である。なお、上筒部１０と下筒部１１のそれぞれは、丸筒状であってもよい。 As shown in FIGS. 2A and 2B, the intermediate gutter 5 includes an upper cylinder portion 10 constituting the upper portion of the intermediate gutter 5 and a lower cylinder portion 11 forming the lower portion of the intermediate gutter 5. Here, the upper part of the intermediate gutter 5 means a portion of the intermediate gutter 5 located relatively upward, and the lower part of the intermediate gutter 5 means a portion of the intermediate gutter 5 located relatively downward. This means that the boundary between the upper part and the lower part of the intermediate gutter 5 is not limited to the middle in the vertical direction of the intermediate gutter 5. The intermediate gutter 5 is made of, for example, a hard vinyl chloride resin. The intermediate gutter 5 may be made of a material that is less likely to expand and contract due to heat than the main body 40 of the upper gutter 3 and the lower gutter 4. In the present embodiment, each of the upper cylinder portion 10 and the lower cylinder portion 11 has a square tubular shape having a square cross section. Each of the upper cylinder portion 10 and the lower cylinder portion 11 may have a round tubular shape.

まず、上筒部１０について説明する。 First, the upper cylinder portion 10 will be described.

上筒部１０は、上縦樋３が上下方向にスライド可能な状態で連通接続される上大筒部１２と、上大筒部１２から下方に延長され、上大筒部１２よりも外寸の小さい上小筒部１３とを有する。 The upper cylinder portion 10 has an upper cylinder portion 12 in which the upper vertical gutter 3 is communicated and connected in a vertically slidable state, and an upper cylinder portion 12 that extends downward from the upper cylinder portion 12 and has an outer dimension smaller than that of the upper cylinder portion 12. It has a small cylinder portion 13.

本実施形態では、上大筒部１２は、外寸が長手方向（上下方向）に亘って一定である。上大筒部１２は、内寸が互いに異なる、上部分１２ａ、中間部分１２ｂ、及び下部分１２ｃを含む。 In the present embodiment, the outer dimensions of the upper large cylinder portion 12 are constant in the longitudinal direction (vertical direction). The upper cylinder portion 12 includes an upper portion 12a, an intermediate portion 12b, and a lower portion 12c having different inner dimensions.

下部分１２ｃは、下方に向けて開口した矩形枠状の差込溝１２０と、差込溝１２０よりも内側に位置する内筒部１２１と、差込溝１２０よりも外側に位置する外筒部１２２とを含む。内筒部１２１と外筒部１２２のそれぞれは、中間部分１２ｂから下方に延長されている。内筒部１２１の上下長さは、外筒部１２２の上下長さよりも短い。外筒部１２２は、内筒部１２１よりも下方に突出している。差込溝１２０には、接着剤が注入される。 The lower portion 12c has a rectangular frame-shaped insertion groove 120 that opens downward, an inner cylinder portion 121 that is located inside the insertion groove 120, and an outer cylinder portion that is located outside the insertion groove 120. Includes 122 and. Each of the inner cylinder portion 121 and the outer cylinder portion 122 extends downward from the intermediate portion 12b. The vertical length of the inner cylinder portion 121 is shorter than the vertical length of the outer cylinder portion 122. The outer cylinder portion 122 projects downward from the inner cylinder portion 121. An adhesive is injected into the insertion groove 120.

上部分１２ａの内寸は、上縦樋３の外寸よりも若干大きい。下部分１２ｃの内筒部１２１の内寸は、上部分１２ａの内寸よりも小さく、上縦樋３の外寸よりも小さい。中間部分１２ｂの内寸は下側ほど小さい。中間部分１２ｂの上端の内寸は、上部分１２ａの内寸と同じであり、中間部分１２ｂの下端の内寸は、下部分１２ｃの内筒部１２１の内寸と同じである。 The inner dimension of the upper portion 12a is slightly larger than the outer dimension of the upper downspout 3. The inner dimension of the inner cylinder portion 121 of the lower portion 12c is smaller than the inner dimension of the upper portion 12a and smaller than the outer dimension of the upper downspout 3. The inner dimension of the intermediate portion 12b is smaller toward the lower side. The inner dimension of the upper end of the intermediate portion 12b is the same as the inner dimension of the upper portion 12a, and the inner dimension of the lower end of the intermediate portion 12b is the same as the inner dimension of the inner cylinder portion 121 of the lower portion 12c.

本実施形態では、上大筒部１２の下端部を、中間部分１２ｂと下部分１２ｃとが構成し、上大筒部１２の下端部を除いた残りの部分を、上部分１２ａが構成する。上縦樋３は、上部分１２ａ内に隙間を介して挿入されることで、上筒部１０に対して、上下方向にスライド可能な状態で連通接続される。ここで、上縦樋３は、上筒部１０の中間部分１２ｂの内周面との間に、一定以上の距離が形成されるように、上筒部１０内に挿入される。 In the present embodiment, the lower end portion of the upper large cylinder portion 12 is formed by the intermediate portion 12b and the lower portion 12c, and the remaining portion excluding the lower end portion of the upper large cylinder portion 12 is formed by the upper portion 12a. The upper downspout 3 is inserted into the upper portion 12a through a gap, so that the upper downspout 3 is communicated with the upper cylinder portion 10 in a state where it can slide in the vertical direction. Here, the upper downspout 3 is inserted into the upper cylinder portion 10 so that a certain distance or more is formed between the upper downspout 3 and the inner peripheral surface of the intermediate portion 12b of the upper cylinder portion 10.

上小筒部１３は、本実施形態では、上大筒部１２に取り付けられた筒１３０の一部で構成される。筒１３０の上端部は、上大筒部１２の差込溝１２０に差し込まれて、接着により上大筒部１２と一体化されている。筒１３０のうち、上大筒部１２から下方に突出した部分が、上小筒部１３である。筒１３０は、長手方向に亘って外寸と内寸のそれぞれが一定であり、肉厚が上大筒部１２よりも小さい。筒１３０の断面形状、外寸、内寸及び材質は、上縦樋３と同じであってもよい。 In the present embodiment, the upper small cylinder portion 13 is composed of a part of the cylinder 130 attached to the upper large cylinder portion 12. The upper end of the cylinder 130 is inserted into the insertion groove 120 of the upper cylinder portion 12 and is integrated with the upper cylinder portion 12 by adhesion. The portion of the cylinder 130 that protrudes downward from the upper large cylinder portion 12 is the upper small cylinder portion 13. The outer dimension and the inner dimension of the cylinder 130 are constant over the longitudinal direction, and the wall thickness is smaller than that of the upper large cylinder portion 12. The cross-sectional shape, outer dimensions, inner dimensions, and material of the cylinder 130 may be the same as those of the upper downspout 3.

続いて、下筒部１１について説明する。 Subsequently, the lower cylinder portion 11 will be described.

下筒部１１は、上小筒部１３に連通接続される下大筒部１４と、下縦樋４の接続部材４１に連通接続される下小筒部１５とを有する。下小筒部１５は、下大筒部１４から下方に延長され、下大筒部１４よりも外寸が小さく構成される。 The lower cylinder portion 11 has a lower cylinder portion 14 that communicates with the upper cylinder portion 13 and a lower cylinder portion 15 that communicates with the connecting member 41 of the lower downspout 4. The lower small cylinder portion 15 extends downward from the lower large cylinder portion 14, and has a smaller outer dimension than the lower large cylinder portion 14.

本実施形態では、下大筒部１４は、外寸が長手方向（上下方向）に亘って一定である。下大筒部１４は、内寸が互いに異なる、上部分１４ａ、中間部分１４ｂ、及び下部分１４ｃを含む。 In the present embodiment, the outer dimensions of the lower large cylinder portion 14 are constant over the longitudinal direction (vertical direction). The lower cylinder portion 14 includes an upper portion 14a, an intermediate portion 14b, and a lower portion 14c having different inner dimensions from each other.

下部分１４ｃは、下方に向けて開口した矩形枠状の差込溝１４０と、差込溝１４０よりも内側に位置する内筒部１４１と、差込溝１４０よりも外側に位置する外筒部１４２とを含む。内筒部１４１と外筒部１４２のそれぞれは、中間部分１４ｂから下方に延長されている。内筒部１４１の上下長さは、外筒部１４２の上下長さよりも短い。外筒部１４２は、内筒部１４１よりも下方に突出している。差込溝１４０には、接着剤が注入される。 The lower portion 14c has a rectangular frame-shaped insertion groove 140 that opens downward, an inner cylinder portion 141 located inside the insertion groove 140, and an outer cylinder portion located outside the insertion groove 140. Includes 142 and. Each of the inner cylinder portion 141 and the outer cylinder portion 142 extends downward from the intermediate portion 14b. The vertical length of the inner cylinder portion 141 is shorter than the vertical length of the outer cylinder portion 142. The outer cylinder portion 142 projects downward from the inner cylinder portion 141. An adhesive is injected into the insertion groove 140.

上部分１４ａの内寸は、上小筒部１３の外寸よりも若干大きい。下部分１４ｃの内筒部１４１の内寸は、上部分１４ａの内寸よりも小さい。中間部分１４ｂの内寸は下側ほど小さい。中間部分１４ｂの上端の内寸は、上部分１４ａの内寸と同じであり、中間部分１４ｂの下端の内寸は、下部分１４ｃの内筒部１４１の内寸と同じである。 The inner dimension of the upper portion 14a is slightly larger than the outer dimension of the upper small cylinder portion 13. The inner dimension of the inner cylinder portion 141 of the lower portion 14c is smaller than the inner dimension of the upper portion 14a. The inner dimension of the intermediate portion 14b is smaller toward the lower side. The inner dimension of the upper end of the intermediate portion 14b is the same as the inner dimension of the upper portion 14a, and the inner dimension of the lower end of the intermediate portion 14b is the same as the inner dimension of the inner cylinder portion 141 of the lower portion 14c.

下小筒部１５は、本実施形態では、下大筒部１４に取り付けられた筒１５０の一部で構成される。筒１５０の上端部は、下大筒部１４の差込溝１４０に差し込まれて、接着により下大筒部１４と一体化されている。筒１５０のうち、下大筒部１４から下方に突出した部分が、下小筒部１５である。筒１５０は、長手方向に亘って外寸と内寸のそれぞれが一定であり、肉厚が下大筒部１４よりも小さい。筒１５０の断面形状、外寸、内寸及び材質は、上縦樋３と同じであってもよい。 In the present embodiment, the lower small cylinder portion 15 is composed of a part of the cylinder 150 attached to the lower large cylinder portion 14. The upper end portion of the cylinder 150 is inserted into the insertion groove 140 of the lower large cylinder portion 14, and is integrated with the lower large cylinder portion 14 by adhesion. Of the cylinders 150, the portion protruding downward from the lower large cylinder portion 14 is the lower small cylinder portion 15. The outer dimension and the inner dimension of the cylinder 150 are constant over the longitudinal direction, and the wall thickness is smaller than that of the lower large cylinder portion 14. The cross-sectional shape, outer dimensions, inner dimensions, and material of the cylinder 150 may be the same as those of the upper downspout 3.

続いて、上筒部１０と下筒部１１と下縦樋４との寸法関係について説明する。 Subsequently, the dimensional relationship between the upper cylinder portion 10, the lower cylinder portion 11, and the lower downspout 4 will be described.

以下では、上小筒部１３の上下長さをＢ１、上小筒部１３の外寸をｄ１、下大筒部１４の上端部の内寸をＤ１、下大筒部１４の上端部の肉厚をｔ１とする。また、下小筒部１５の上下長さをＢ２、下小筒部１５の外寸をｄ２、下縦樋４の上端部（つまり接続部材４１の上端部）の内寸をＤ２、下縦樋４の上端部（つまり接続部材４１の上端部）の肉厚をｔ２とする。 In the following, the vertical length of the upper cylinder portion 13 is B1, the outer dimension of the upper cylinder portion 13 is d1, the inner dimension of the upper end portion of the lower cylinder portion 14 is D1, and the wall thickness of the upper end portion of the lower cylinder portion 14 is defined. Let it be t1. Further, the vertical length of the lower small cylinder portion 15 is B2, the outer dimension of the lower small cylinder portion 15 is d2, the inner dimension of the upper end portion of the lower downspout 4 (that is, the upper end portion of the connecting member 41) is D2, and the lower downspout. The wall thickness of the upper end portion of 4 (that is, the upper end portion of the connecting member 41) is t2.

上筒部１０と下筒部１１と下縦樋４との寸法関係は、下記の式（１）と式（２）の関係にある。
Ｂ１≦（１＋ｔ１／Ｄ１）（Ｄ１^２−ｄ１^２）^１／２・・・（１）
Ｂ２≦（１＋ｔ２／Ｄ２）（Ｄ２^２−ｄ２^２）^１／２・・・（２）
上記の式（１）は、図３に示す上筒部１０から下筒部１１が外れる瞬間に形成される２つの相似の直角三角形Ｔ１，Ｔ２から算出することができる。また、上記の式（２）は、図３に示す下縦樋４から下筒部１１が外れる瞬間に形成される２つの相似の直角三角形Ｔ３，Ｔ４から算出することができる。 The dimensional relationship between the upper cylinder portion 10, the lower cylinder portion 11, and the lower downspout 4 is the relationship between the following equations (1) and (2).
B1 ≤ (1 + t1 / D1) (D1 ^2- d1 ² ) ^1/2 ... (1)
B2 ≤ (1 + t2 / D2) (D2 ^2- d2 ² ) ^1/2 ... (2)
The above equation (1) can be calculated from two similar right triangles T1 and T2 formed at the moment when the lower cylinder portion 11 is removed from the upper cylinder portion 10 shown in FIG. Further, the above equation (2) can be calculated from two similar right triangles T3 and T4 formed at the moment when the lower cylinder portion 11 is removed from the lower downspout 4 shown in FIG.

なお、本実施形態では、下筒部１１は、形状、寸法、及び材質が上筒部１０と同じであり、下筒部１１の下大筒部１４と、上筒部１０の上大筒部１２と、接続部材４１は、形状、寸法、及び材質が、互いに同じである。 In the present embodiment, the lower cylinder portion 11 has the same shape, dimensions, and material as the upper cylinder portion 10, and the lower cylinder portion 14 of the lower cylinder portion 11 and the upper cylinder portion 12 of the upper cylinder portion 10 , The connecting member 41 has the same shape, dimensions, and material.

続いて、下固定具６について説明する。 Subsequently, the lower fixture 6 will be described.

図１、図４Ａ、図４Ｂに示すように、下固定具６は、下部構造体２１に装着される第一装着部６０と、下縦樋４の本体部４０に装着される第二装着部６１と、第一装着部６０と第二装着部６１とを連結する連結部６２とを有する。下固定具６は、例えば金属製である。 As shown in FIGS. 1, 4A and 4B, the lower fixture 6 has a first mounting portion 60 mounted on the lower structure 21 and a second mounting portion mounted on the main body 40 of the lower downspout 4. It has a 61 and a connecting portion 62 that connects the first mounting portion 60 and the second mounting portion 61. The lower fixture 6 is made of metal, for example.

図５Ａ、図５Ｂ、図５Ｃに示すように、連結部６２は、第一装着部６０と第二装着部６１との相対位置を変更できるように構成されている。本実施形態では、連結部６２は、第一装着部６０に対する第二装着部６１の位置を、水平面上において互いに直交する第一方向と第二方向のそれぞれにおいて変更できるように構成されている。 As shown in FIGS. 5A, 5B, and 5C, the connecting portion 62 is configured so that the relative positions of the first mounting portion 60 and the second mounting portion 61 can be changed. In the present embodiment, the connecting portion 62 is configured so that the position of the second mounting portion 61 with respect to the first mounting portion 60 can be changed in each of the first direction and the second direction orthogonal to each other on the horizontal plane.

図４Ａ、図４Ｂに示すように、第一装着部６０は、本実施形態では、Ｌ字状である。第一装着部６０は、下部構造体２１にビス等で固定される固定片部６００と、固定片部６００の下端から略直角に延長された第一連結片部６０１とを含む。第一連結片部６０１は、一方向に長い平板状である。 As shown in FIGS. 4A and 4B, the first mounting portion 60 is L-shaped in the present embodiment. The first mounting portion 60 includes a fixed piece portion 600 fixed to the lower structure 21 with screws or the like, and a first connecting piece portion 601 extending substantially at a right angle from the lower end of the fixed piece portion 600. The first connecting piece portion 601 has a flat plate shape that is long in one direction.

第二装着部６１は、開閉自在な掴み部６１０と、掴み部６１０から第一装着部６０側に延長された第二連結片部６１１とを含む。第二連結片部６１１は、一方向に長い平板状である。 The second mounting portion 61 includes a grip portion 610 that can be opened and closed, and a second connecting piece portion 611 that extends from the grip portion 610 to the first mounting portion 60 side. The second connecting piece portion 611 has a flat plate shape that is long in one direction.

掴み部６１０は、平面視直線状の基部６１０ａと、基部６１０ａの長手方向の第一端部に対して回転自在に連結された平面視Ｕ字状の可動部６１０ｂとを含む。可動部６１０ｂは、基部６１０ａの長手方向の第二端部（第一端部とは反対側の端部）に対して着脱自在である。基部６１０ａから第二連結片部６１１が延長されている。 The grip portion 610 includes a base portion 610a having a linear view in a plane and a movable portion 610b having a U shape in a plan view rotatably connected to a first end portion in the longitudinal direction of the base portion 610a. The movable portion 610b is removable from the second end portion (the end portion on the side opposite to the first end portion) in the longitudinal direction of the base portion 610a. The second connecting piece portion 611 is extended from the base portion 610a.

掴み部６１０は、平面視矩形枠状をなす閉姿勢と、枠の一部が開いた開姿勢とに切替可能である。基部６１０ａの第一端部と第二端部のそれぞれに対して可動部６１０ｂが連結された状態が、閉姿勢である。基部６１０ａの第二端部に対して可動部６１０ｂが連結されていない状態が、開姿勢である。 The grip portion 610 can be switched between a closed posture having a rectangular frame shape in a plan view and an open posture in which a part of the frame is open. The closed posture is a state in which the movable portion 610b is connected to each of the first end portion and the second end portion of the base portion 610a. The open posture is a state in which the movable portion 610b is not connected to the second end portion of the base portion 610a.

掴み部６１０は、閉姿勢にあるときに、下縦樋４を掴んで支持することが可能である。下縦樋４は、掴み部６１０によって支持された状態で、水平方向の移動が規制される。なお、掴み部６１０は、下縦樋４の熱伸縮に伴う鉛直方向の位置ずれを許容するように構成されている。 The grip portion 610 can grip and support the lower downspout 4 when it is in the closed posture. The lower downspout 4 is supported by the grip portion 610, and its movement in the horizontal direction is restricted. The grip portion 610 is configured to allow a vertical displacement due to thermal expansion and contraction of the lower downspout 4.

連結部６２は、長孔６２０を有するガイド板６２１と、ガイド板６２１及び第一連結片部６０１を連結するための第一連結具６２２と、ガイド板６２１及び第二連結片部６１１を連結するための第二連結具６２３とを含む。第一連結具６２２と第二連結具６２３のそれぞれは、本実施形態では、ボルトである。ガイド板６２１は、一方向に長い平板状である。ガイド板６２１の長手方向と長孔６２０の長手方向とは、互いに平行である。 The connecting portion 62 connects the guide plate 621 having the elongated hole 620, the first connecting tool 622 for connecting the guide plate 621 and the first connecting piece portion 601 and the guide plate 621 and the second connecting piece portion 611. Includes a second connector for 623. Each of the first connector 622 and the second connector 623 is a bolt in this embodiment. The guide plate 621 has a flat plate shape that is long in one direction. The longitudinal direction of the guide plate 621 and the longitudinal direction of the elongated hole 620 are parallel to each other.

第一連結片部６０１は、第一連結具６２２が取り付けられるねじ孔を有し、第二連結片部６１１は、第二連結具６２３が取り付けられるねじ孔を有する。第一連結具６２２と第二連結具６２３をねじ締めすることによって、第一連結片部６０１と第二連結片部６１１のそれぞれは、ガイド板６２１の下面に当たる状態で、ガイド板６２１に対して固定される。 The first connecting piece portion 601 has a screw hole to which the first connecting tool 622 is attached, and the second connecting piece portion 611 has a screw hole to which the second connecting tool 623 is attached. By screwing the first connecting tool 622 and the second connecting tool 623, each of the first connecting piece portion 601 and the second connecting piece portion 611 is in contact with the lower surface of the guide plate 621 with respect to the guide plate 621. It is fixed.

図５Ａ、図５Ｂ、図５Ｃに示すように、長孔６２０内における連結具６２２，６２３の間の距離と、連結片部６０１，６１１に対するガイド板６２１の角度のうち、少なくとも一方を変えることで、第一装着部６０と第二装着部６１との相対位置の変更が可能である。 As shown in FIGS. 5A, 5B, and 5C, by changing at least one of the distance between the connecting tools 622 and 623 in the elongated hole 620 and the angle of the guide plate 621 with respect to the connecting pieces 601 and 611. , The relative position of the first mounting portion 60 and the second mounting portion 61 can be changed.

続いて、上固定具７について説明する。 Subsequently, the upper fixture 7 will be described.

図１に示すように、上固定具７は、上部構造体２０に装着される第一装着部７０と、上縦樋３に装着される第二装着部７１と、第一装着部７０及び第二装着部７１を連結する連結部７２とを有する。上固定具７は、例えば金属製である。連結部７２は、第一装着部７０と第二装着部７１とを位置変更不可に連結する。 As shown in FIG. 1, the upper fixture 7 includes a first mounting portion 70 mounted on the upper structure 20, a second mounting portion 71 mounted on the upper downspout 3, a first mounting portion 70, and a first mounting portion 70. (Ii) It has a connecting portion 72 that connects the mounting portions 71. The upper fixture 7 is made of metal, for example. The connecting portion 72 connects the first mounting portion 70 and the second mounting portion 71 so that the positions cannot be changed.

続いて、排水構造８について説明する。 Subsequently, the drainage structure 8 will be described.

排水構造８は、下水管８０と、溜めマス８１と、蓋８２とを有する。溜めマス８１は、円筒状で底のある容器部８１０と、容器部８１０の外周壁の一部から外側に突出した筒状の接続部８１１とを有する。接続部８１１に、下水管８０が連通接続される。 The drainage structure 8 has a sewer pipe 80, a reservoir mass 81, and a lid 82. The reservoir mass 81 has a cylindrical bottomed container portion 810 and a tubular connecting portion 811 protruding outward from a part of the outer peripheral wall of the container portion 810. The sewer pipe 80 is communicated with the connection portion 811.

蓋８２は、容器部８１０の上端の開口を閉じる円板部８２０と、円板部８２０の外周縁から下方に延長された周壁部８２１と、円板部８２０を上下方向に貫通した円筒状の接続筒部８２２とを有する。 The lid 82 has a cylindrical shape that penetrates the disk portion 820 that closes the opening at the upper end of the container portion 810, the peripheral wall portion 821 that extends downward from the outer peripheral edge of the disk portion 820, and the disk portion 820 in the vertical direction. It has a connecting cylinder portion 822.

接続筒部８２２の外寸（外径）は、容器部８１０の内寸（内径）よりも小さく、円板部８２０の外寸（外径）は、容器部８１０の外寸（外径）よりも大きい。蓋８２は、溜めマス８１に対して、水平方向の位置が変更可能である。 The outer dimension (outer diameter) of the connecting cylinder portion 822 is smaller than the inner dimension (inner diameter) of the container portion 810, and the outer dimension (outer diameter) of the disk portion 820 is smaller than the outer dimension (outer diameter) of the container portion 810. Is also big. The position of the lid 82 in the horizontal direction with respect to the reservoir mass 81 can be changed.

排水構造８は、例えば、接続筒部８２２が地面から上方に突出するように、地中に設けられる。なお、排水構造８は、蓋８２の周壁部８２１が地面よりも上方に位置するように、地中に設けられてもよい。 The drainage structure 8 is provided in the ground so that, for example, the connecting cylinder portion 822 projects upward from the ground. The drainage structure 8 may be provided in the ground so that the peripheral wall portion 821 of the lid 82 is located above the ground.

続いて、排水カバー９について説明する。 Subsequently, the drainage cover 9 will be described.

排水カバー９は、下縦樋４の本体部４０の下端部に連通接続される筒状の本体部９０と、本体部９０の下端から外側に延長された円環状のフランジ部９１とを有する。本体部９０は、本実施形態では、平断面正方形の角筒状である。フランジ部９１は、地面または蓋８２の円板部８２０の上面に載置される。本体部９０の上部には、下縦樋４の下端部が挿入可能であり、本体部９０の下部には、蓋８２の接続筒部８２２が挿入可能である。 The drainage cover 9 has a tubular main body 90 that is connected to the lower end of the main body 40 of the lower downspout 4, and an annular flange 91 that extends outward from the lower end of the main body 90. In the present embodiment, the main body 90 has a square cylinder with a square flat cross section. The flange portion 91 is placed on the ground or on the upper surface of the disc portion 820 of the lid 82. The lower end of the lower downspout 4 can be inserted into the upper part of the main body 90, and the connection cylinder part 822 of the lid 82 can be inserted into the lower part of the main body 90.

続いて、図１に示す免震建物２に設けられた縦樋構造１について説明する。 Subsequently, the downspout structure 1 provided in the seismic isolated building 2 shown in FIG. 1 will be described.

上縦樋３は、上固定具７を介して上部構造体２０に固定される。下縦樋４の本体部４０は、上部が下固定具６を介して下部構造体２１に固定され、下端部が排水カバー９の本体部９０に連通接続される。下縦樋４は、上縦樋３の真下に配される。上縦樋３は、エルボ、横引き管、集水マス等を介して軒樋に連通接続されている。下縦樋４は、排水カバー９を介して、接続筒部８２２、溜めマス８１、及び下水管８０に連通される。下縦樋４の本体部４０の上端部には、接続部材４１が接着により固定される。 The upper downspout 3 is fixed to the upper structure 20 via the upper fixing tool 7. The upper part of the main body 40 of the lower downspout 4 is fixed to the lower structure 21 via the lower fixture 6, and the lower end is communicated with the main body 90 of the drainage cover 9. The lower downspout 4 is arranged directly below the upper downspout 3. The upper downspout 3 is connected to the eaves gutter via an elbow, a horizontal pull pipe, a water collecting mass, and the like. The lower downspout 4 is communicated with the connecting cylinder portion 822, the reservoir mass 81, and the sewer pipe 80 via the drainage cover 9. A connecting member 41 is fixed to the upper end of the main body 40 of the lower downspout 4 by adhesion.

上縦樋３の下部は、中間樋５の上筒部１０の上大筒部１２内に上下方向にスライド可能に挿入接続され、下縦樋４の接続部材４１の上端部には、中間樋５の下筒部１１の下小筒部１５が連通接続される。上筒部１０の上小筒部１３は、下筒部１１の下大筒部１４内に挿入接続される。 The lower part of the upper downspout 3 is inserted and connected so as to be slidable in the upper cylinder portion 12 of the upper cylinder portion 10 of the upper downspout 5 in the upper and lower directions, and the intermediate gutter 5 is connected to the upper end portion of the connecting member 41 of the lower downspout 4. The lower small cylinder portion 15 of the lower cylinder portion 11 is connected in communication. The upper small cylinder portion 13 of the upper cylinder portion 10 is inserted and connected into the lower large cylinder portion 14 of the lower cylinder portion 11.

上縦樋３、中間樋５（上筒部１０と下筒部１１）、下縦樋４（接続部材４１と本体部４０）、排水カバー９、接続筒部８２２、及び容器部８１０は、鉛直方向に一直線上に並んで位置する。 The upper downspout 3, the middle downspout 5 (upper cylinder 10 and lower cylinder 11), the lower downspout 4 (connecting member 41 and main body 40), drain cover 9, connecting cylinder 822, and container 810 are vertical. It is located in a straight line in the direction.

以上説明した縦樋構造１では、地震が起こった場合に、以下のように動作する。 The downspout structure 1 described above operates as follows when an earthquake occurs.

まず、図６Ａに示すように、下部構造体２１に対する上部構造体２０の水平方向の相対位置が変化し、これに伴って、上部構造体２０に上固定具７を介して固定された上縦樋３の下縦樋４に対する水平方向の相対位置が変化する。 First, as shown in FIG. 6A, the horizontal relative position of the upper structure 20 with respect to the lower structure 21 changes, and along with this, the upper vertical fixed to the upper structure 20 via the upper fixing tool 7. The horizontal relative position of the gutter 3 with respect to the lower downspout 4 changes.

このとき、上筒部１０と下縦樋４との間に接続された下筒部１１が傾いて、上筒部１０の上小筒部１３から下筒部１１の下大筒部１４が外れ、下縦樋４の接続部材４１の上端部から下筒部１１の下小筒部１５が外れる。 At this time, the lower cylinder portion 11 connected between the upper cylinder portion 10 and the lower downspout 4 is tilted, and the lower cylinder portion 14 of the lower cylinder portion 11 is disengaged from the upper cylinder portion 13 of the upper cylinder portion 10. The lower small cylinder portion 15 of the lower cylinder portion 11 comes off from the upper end portion of the connecting member 41 of the lower downspout 4.

図６Ｂに示すように、上筒部１０と下縦樋４の接続部材４１との間から外れた下筒部１１は、地面に落下し、下筒部１１及び下縦樋４によって支持されなくなった上筒部１０は、上縦樋３から外れ落ちる。 As shown in FIG. 6B, the lower cylinder portion 11 detached from between the upper cylinder portion 10 and the connecting member 41 of the lower downspout 4 falls to the ground and is no longer supported by the lower cylinder portion 11 and the lower downspout 4. The upper cylinder portion 10 falls off from the upper downspout 3.

以上説明したように、本実施形態の縦樋構造１では、地震が起こったときに、上部構造体２０と下部構造体２１との相対位置の変化に対応して、上縦樋３及び下縦樋４を接続する中間樋５が、上筒部１０と下筒部１１の２つに分離して外れる。 As described above, in the downspout structure 1 of the present embodiment, when an earthquake occurs, the upper downspout 3 and the lower downspout correspond to the change in the relative positions of the upper structure 20 and the lower structure 21. The intermediate gutter 5 connecting the gutter 4 is separated into two parts, an upper cylinder portion 10 and a lower cylinder portion 11, and comes off.

これにより、本実施形態の縦樋構造１の設置構造では、構造体２０，２１の相対位置の変化によって生じる負荷が上縦樋３または下縦樋４にかかり続けることを防いで、上縦樋３または下縦樋４に変形や破損が生じることを抑制することができる。 As a result, in the installation structure of the downspout structure 1 of the present embodiment, the load generated by the change in the relative positions of the structures 20 and 21 is prevented from being continuously applied to the upper downspout 3 or the lower downspout 4, and the upper downspout is prevented. It is possible to prevent the 3 or the lower downspout 4 from being deformed or damaged.

また、本実施形態の縦樋構造１の設置構造では、中間樋５が分離した後に、上縦樋３が下部構造体２１に接触して破損することや、下縦樋４が上部構造体２０に接触して破損することも防ぐことができる。 Further, in the installation structure of the downspout structure 1 of the present embodiment, after the intermediate downspout 5 is separated, the upper downspout 3 comes into contact with the lower structure 21 and is damaged, and the lower downspout 4 is the upper structure 20. It is also possible to prevent damage due to contact with the gutter.

また、本実施形態の縦樋構造１では、上縦樋３または下縦樋４が熱により長手方向に伸長したときに、中間樋５の上筒部１０の上大筒部１２内の上縦樋３の挿入長さが増加可能である。そのため、本実施形態の縦樋構造１では、上縦樋３または下縦樋４が熱伸びすることによって、上縦樋３と中間樋５と下縦樋４のうち、上下に互いに重なった部分に大きな負荷がかかることを防ぐことができる。これにより、本実施形態の縦樋構造１では、上縦樋３または下縦樋４が熱伸びすることによって、上縦樋３や中間樋５や下縦樋４に変形や破損が生じることを防ぐことができる。 Further, in the downspout structure 1 of the present embodiment, when the upper downspout 3 or the lower downspout 4 is extended in the longitudinal direction by heat, the upper downspout in the upper downspout portion 12 of the upper cylinder portion 10 of the intermediate gutter 5 The insertion length of 3 can be increased. Therefore, in the downspout structure 1 of the present embodiment, the upper downspout 3 or the lower downspout 4 is thermally stretched, so that the upper downspout 3, the middle downspout 5, and the lower downspout 4 are vertically overlapped with each other. It is possible to prevent a large load from being applied to the gutter. As a result, in the downspout structure 1 of the present embodiment, the upper downspout 3 or the lower downspout 4 is thermally stretched, so that the upper downspout 3, the intermediate gutter 5, and the lower downspout 4 are deformed or damaged. Can be prevented.

また、本実施形態の縦樋構造１では、上縦樋３または下縦樋４が長手方向に熱収縮したときに、中間樋５の上筒部１０の上大筒部１２内の上縦樋３の挿入長さが減少可能である。このとき、本実施形態の縦樋構造１では、中間樋５の上筒部１０の下筒部１１への挿入長さと、下筒部１１の下縦樋４の接続部材４１への挿入長さとがいずれも短くならず、接続強度の低下を防ぐことができる。 Further, in the downspout structure 1 of the present embodiment, when the upper downspout 3 or the lower downspout 4 is heat-shrinked in the longitudinal direction, the upper downspout 3 in the upper downspout portion 12 of the upper cylinder portion 10 of the intermediate gutter 5 The insertion length of the gutter can be reduced. At this time, in the downspout structure 1 of the present embodiment, the insertion length of the upper cylinder portion 10 of the intermediate gutter 5 into the lower cylinder portion 11 and the insertion length of the lower cylinder portion 11 into the connecting member 41 of the lower downspout portion 4 However, neither of them is shortened, and it is possible to prevent a decrease in connection strength.

また、本実施形態の縦樋構造１では、下筒部１１に対する上筒部１０の挿入長さと、下縦樋４に対する下筒部１１の挿入長さとが、上筒部１０に対する上縦樋３の挿入長さに寄らず、一定である。そのため、本実施形態の縦樋構造１では、設置誤差が原因で、上縦樋３と下縦樋４との間から中間樋５が外れないといった不具合が発生しにくく、設置が容易である。 Further, in the downspout structure 1 of the present embodiment, the insertion length of the upper cylinder portion 10 with respect to the lower cylinder portion 11 and the insertion length of the lower cylinder portion 11 with respect to the lower downspout 4 are determined by the upper downspout 3 with respect to the upper cylinder portion 10. It is constant regardless of the insertion length of. Therefore, in the downspout structure 1 of the present embodiment, a problem that the intermediate downspout 5 does not come off between the upper downspout 3 and the lower downspout 4 due to an installation error is unlikely to occur, and the installation is easy.

また、本実施形態の縦樋構造１では、設置の際に、上筒部１０を上縦樋３の下部に差し込んだ状態で上方に持ち上げることで、上筒部１０と下縦樋４との間に、下筒部１１を設置するためのスペースを確保でき、中間樋５の設置が容易である。 Further, in the downspout structure 1 of the present embodiment, when the upper cylinder portion 10 is inserted into the lower part of the upper downspout 3 and lifted upward, the upper cylinder portion 10 and the lower downspout 4 can be connected. A space for installing the lower cylinder portion 11 can be secured between them, and the intermediate gutter 5 can be easily installed.

また、本実施形態の縦樋構造１では、下縦樋４を、本体部４０と本体部４０の上端部に取り付けられる接続部材４１とで構成したことで、接続部材４１の上端部と、下筒部１１の下小筒部１５とを上述した寸法関係に形成しやすい。そのため、本実施形態の縦樋構造１では、地震の際に下縦樋４から下筒部１１が外れないといった不具合が発生しにくい。 Further, in the downspout structure 1 of the present embodiment, the lower downspout 4 is composed of the main body 40 and the connecting member 41 attached to the upper end of the main body 40. It is easy to form the lower small cylinder portion 15 of the cylinder portion 11 in the above-mentioned dimensional relationship. Therefore, in the downspout structure 1 of the present embodiment, a problem that the lower cylinder portion 11 does not come off from the lower downspout 4 in the event of an earthquake is unlikely to occur.

また、本実施形態の縦樋構造１では、上筒部１０の上小筒部１３と下筒部１１の下小筒部１５のそれぞれが、大筒部１２，１４よりも肉厚が小さいため、切断が容易で挿入長さの調整がしやすい。 Further, in the downspout structure 1 of the present embodiment, the upper small cylinder portion 13 of the upper cylinder portion 10 and the lower small cylinder portion 15 of the lower cylinder portion 11 are each smaller in wall thickness than the large cylinder portions 12 and 14. Easy to cut and easy to adjust the insertion length.

また、本実施形態の縦樋構造１では、上大筒部１２と下大筒部１４と接続部材４１とが、形状、寸法及び材質がいずれも同じであるため、製造コストを抑えることができる。 Further, in the downspout structure 1 of the present embodiment, the upper large cylinder portion 12, the lower large cylinder portion 14, and the connecting member 41 all have the same shape, dimensions, and material, so that the manufacturing cost can be suppressed.

続いて、図７に示す、地震後の修復された縦樋構造１について説明する。 Subsequently, the repaired downspout structure 1 after the earthquake shown in FIG. 7 will be described.

この縦樋構造１では、上部構造体２０の下部構造体２１に対する残留変位に対応して、下固定具６の連結部６２が調整され、第一装着部６０に対する第二装着部６１の相対位置が変更されることで、下縦樋４が上縦樋３の真下に配置されている。 In the downspout structure 1, the connecting portion 62 of the lower fixture 6 is adjusted in response to the residual displacement of the upper structure 20 with respect to the lower structure 21, and the position of the second mounting portion 61 relative to the first mounting portion 60 is adjusted. Is changed so that the lower downspout 4 is arranged directly below the upper downspout 3.

下縦樋４の位置変更に対応して、溜めマス８１に対する蓋８２の配置が変更されている。これにより、蓋８２の接続筒部８２２と、排水カバー９と、下縦樋４とが鉛直方向に一直線上に配される。 The arrangement of the lid 82 with respect to the reservoir mass 81 has been changed in response to the change in the position of the lower downspout 4. As a result, the connecting cylinder portion 822 of the lid 82, the drainage cover 9, and the lower downspout 4 are arranged in a straight line in the vertical direction.

上縦樋３の下端部には、上筒部１０の上大筒部１２が上下方向にスライド可能に連通接続される。下縦樋４の接続部材４１の上端部には、下筒部１１の下小筒部１５が連通接続される。上筒部１０の上小筒部１３は、下筒部１１の下大筒部１４に連通接続される。 The upper large cylinder portion 12 of the upper cylinder portion 10 is connected to the lower end portion of the upper downspout 3 so as to be slidable in the vertical direction. The lower small cylinder portion 15 of the lower cylinder portion 11 is communicated and connected to the upper end portion of the connecting member 41 of the lower downspout 4. The upper small cylinder portion 13 of the upper cylinder portion 10 is communicated with the lower large cylinder portion 14 of the lower cylinder portion 11.

以上説明した修復された縦樋構造１では、上縦樋３、中間樋５（上筒部１０と下筒部１１）、下縦樋４（接続部材４１と本体部４０）、排水カバー９、蓋８２の接続筒部８２２、及び容器部８１０が、鉛直方向に一直線上に並ぶ。これにより、修復された縦樋構造１では、縦樋構造１の排水機能を、地震が起こる前と同程度確保することができる。また、修復された縦樋構造１では、地震前と略同じ外観を呈することができる。 In the repaired vertical gutter structure 1 described above, the upper vertical gutter 3, the intermediate gutter 5 (upper cylinder portion 10 and lower cylinder portion 11), the lower vertical gutter 4 (connecting member 41 and main body 40), the drainage cover 9, and so on. The connecting cylinder portion 822 and the container portion 810 of the lid 82 are arranged in a straight line in the vertical direction. As a result, in the restored downspout structure 1, the drainage function of the downspout structure 1 can be secured to the same extent as before the earthquake. In addition, the restored downspout structure 1 can exhibit substantially the same appearance as before the earthquake.

（変更例）
以上説明した実施形態１の縦樋構造１は、以下の変更例を採用可能である。 (Change example)
The following modified examples can be adopted for the downspout structure 1 of the first embodiment described above.

下縦樋４は、本体部４０のみで構成されてもよく、この場合、本体部４０としては、内寸がＤ２、肉厚がｔ２の１つの筒が用いられる。 The lower downspout 4 may be composed of only the main body portion 40. In this case, one cylinder having an inner dimension of D2 and a wall thickness of t2 is used as the main body portion 40.

縦樋構造１は、上固定具７を備えなくてもよい。この場合も、上縦樋３は、軒樋を介して上部構造体２０に取り付けられているため、地震の際に上部構造体２０の水平方向の移動に対応して、水平方向へ移動することができる。 The downspout structure 1 does not have to include the upper fixture 7. In this case as well, since the upper downspout 3 is attached to the superstructure 20 via the eaves gutter, it should move horizontally in response to the horizontal movement of the superstructure 20 in the event of an earthquake. Can be done.

縦樋構造１は、下固定具６を備えなくてもよい。この場合、下縦樋４は、排水カバー９によって起立姿勢で支持される。 The downspout structure 1 does not have to include the lower fixture 6. In this case, the lower downspout 4 is supported in an upright position by the drainage cover 9.

下固定具６の連結部６２は、第一装着部６０と第二装着部６１とを位置変更不可に連結するように構成されてもよい。 The connecting portion 62 of the lower fixture 6 may be configured to connect the first mounting portion 60 and the second mounting portion 61 so as not to change the position.

上固定具７は、下固定具６の連結部６２と同様の構造の連結部７２を有してもよい。 The upper fixture 7 may have a connecting portion 72 having the same structure as the connecting portion 62 of the lower fixture 6.

上筒部１０は、一体に成形された上大筒部１２と上小筒部１３とで構成されてもよい。また、下筒部１１は、一体に成形された下大筒部１４と下小筒部１５とで構成されてもよい。 The upper cylinder portion 10 may be composed of an integrally molded upper cylinder portion 12 and an upper small cylinder portion 13. Further, the lower cylinder portion 11 may be composed of an integrally molded lower cylinder portion 14 and a lower cylinder portion 15.

排水構造８の蓋８２は、接続筒部８２２を円板部８２０の中心からずれた偏心位置に有してもよく、この場合、蓋８２を回転させることで、接続筒部８２２の位置が変更可能である。 The lid 82 of the drainage structure 8 may have the connection cylinder portion 822 at an eccentric position deviated from the center of the disk portion 820. In this case, the position of the connection cylinder portion 822 is changed by rotating the lid 82. It is possible.

（効果）
以上説明した実施形態１の縦樋構造１は、下記の第一の特徴を備える。 (effect)
The downspout structure 1 of the first embodiment described above has the following first feature.

すなわち、実施形態１の縦樋構造１は、上部構造体２０と下部構造体２１とこの間に位置する免震機構２２とを備え、上部構造体２０と下部構造体２１との水平方向の相対位置が免震機構２２を介して変化するように構成された免震建物２に設けられる。 That is, the vertical trough structure 1 of the first embodiment includes the upper structure 20, the lower structure 21, and the seismic isolation mechanism 22 located between them, and the relative positions of the upper structure 20 and the lower structure 21 in the horizontal direction. Is provided in the seismic isolation building 2 configured to change via the seismic isolation mechanism 22.

実施形態１の縦樋構造１は、上部構造体２０に取り付けられる上縦樋３と、上縦樋３の下方に位置する下縦樋４と、上縦樋３及び下縦樋４を連通接続させる中間樋５とを備える。 The downspout structure 1 of the first embodiment connects the upper downspout 3 attached to the upper structure 20, the lower downspout 4 located below the upper downspout 3, and the upper downspout 3 and the lower downspout 4 in communication with each other. It is provided with an intermediate gutter 5 to be operated.

中間樋５は、中間樋５の上部を構成する上筒部１０と、中間樋５の下部を構成する下筒部１１とを含む。 The intermediate gutter 5 includes an upper cylinder portion 10 that constitutes the upper portion of the intermediate gutter 5 and a lower cylinder portion 11 that constitutes the lower portion of the intermediate gutter 5.

上筒部１０は、上縦樋３が上下方向にスライド可能に連通接続される上大筒部１２と、上大筒部１２から下方に延長され、上大筒部１２よりも外寸の小さい上小筒部１３とを有する。下筒部１１は、上小筒部１３に連通接続される下大筒部１４と、下縦樋４に連通接続される下小筒部１５とを有する。下小筒部１５は、下大筒部１４から下方に延長され、下大筒部１４よりも外寸が小さく構成される。 The upper cylinder portion 10 has an upper cylinder portion 12 in which the upper vertical gutter 3 is slidably connected in the vertical direction, and an upper cylinder portion 12 that extends downward from the upper cylinder portion 12 and has an outer dimension smaller than that of the upper cylinder portion 12. It has a part 13. The lower cylinder portion 11 has a lower cylinder portion 14 that communicates with the upper cylinder portion 13 and a lower cylinder portion 15 that communicates with the lower downspout 4. The lower small cylinder portion 15 extends downward from the lower large cylinder portion 14, and has a smaller outer dimension than the lower large cylinder portion 14.

上小筒部１３の上下長さをＢ１、上小筒部１３の外寸をｄ１、下大筒部１４の上端部の内寸をＤ１、下大筒部１４の上端部の肉厚をｔ１、下小筒部１５の上下長さをＢ２、下小筒部１５の外寸をｄ２、下縦樋４の上端部の内寸をＤ２、下縦樋４の上端部の肉厚をｔ２としたときに、Ｂ１≦（１＋ｔ１／Ｄ１）（Ｄ１^２−ｄ１^２）^１／２、Ｂ２≦（１＋ｔ２／Ｄ２）（Ｄ２^２−ｄ２^２）^１／２の関係にある。 The vertical length of the upper cylinder portion 13 is B1, the outer dimension of the upper cylinder portion 13 is d1, the inner dimension of the upper end portion of the lower cylinder portion 14 is D1, the wall thickness of the upper end portion of the lower cylinder portion 14 is t1, and the bottom. When the vertical length of the small cylinder portion 15 is B2, the outer dimension of the lower small cylinder portion 15 is d2, the inner dimension of the upper end portion of the lower downspout 4 is D2, and the wall thickness of the upper end portion of the lower downspout 4 is t2. ^{a, B1 ≦ (1 + t1 /} D1) (D1 2 -d1 2) 1/2, in ^{B2 ≦ (1 + t2 / D2} ) (D2 2 -d2 2) 1/2 relationship.

第一の特徴を備えることで、実施形態１の縦樋構造１では、地震が起こって構造体２０，２１の水平方向の相対位置が変化するときに、上筒部１０と下縦樋４との間から、下筒部１１が傾いて外れる。そのため、実施形態１の縦樋構造１では、地震時に上縦樋３及び下縦樋４に負荷がかかりにくくて、上縦樋３及び下縦樋４の変形や破損を抑制することができる。 By providing the first feature, in the downspout structure 1 of the first embodiment, when an earthquake occurs and the relative positions of the structures 20 and 21 in the horizontal direction change, the upper cylinder portion 10 and the lower downspout 4 The lower cylinder portion 11 tilts and comes off from between. Therefore, in the downspout structure 1 of the first embodiment, the load is less likely to be applied to the upper downspout 3 and the lower downspout 4 at the time of an earthquake, and the deformation and breakage of the upper downspout 3 and the lower downspout 4 can be suppressed.

また、実施形態１の縦樋構造１では、上縦樋３と下縦樋４とが熱により長手方向に伸長したときには、上筒部１０への上縦樋３の挿入長さが長くなることで、その伸長を上筒部１０によって吸収することができる。これにより、実施形態１の縦樋構造１では、上縦樋３と下縦樋４とが熱により長手方向に伸長したときに、上縦樋３や下縦樋４や中間樋５に負荷がかかって変形や破損することを防止できる。 Further, in the downspout structure 1 of the first embodiment, when the upper downspout 3 and the lower downspout 4 are extended in the longitudinal direction by heat, the insertion length of the upper downspout 3 into the upper cylinder portion 10 becomes long. Then, the extension can be absorbed by the upper cylinder portion 10. As a result, in the downspout structure 1 of the first embodiment, when the upper downspout 3 and the lower downspout 4 are extended in the longitudinal direction by heat, a load is applied to the upper downspout 3, the lower downspout 4, and the intermediate downspout 5. It can be prevented from being deformed or damaged.

また、実施形態１の縦樋構造１では、上縦樋３と下縦樋４とが長手方向に熱収縮したときには、上筒部１０への上縦樋３の挿入長さが短くなるだけで、上筒部１０の下筒部１１への挿入長さや下筒部１１の下縦樋４への挿入長さが短くならない。そのため、実施形態１の縦樋構造１では、上縦樋３と下縦樋４とが長手方向に熱収縮しても、風等を受けて上筒部１０と下縦樋４との間から下筒部１１が外れることを防ぐことができる。 Further, in the downspout structure 1 of the first embodiment, when the upper downspout 3 and the lower downspout 4 are thermally contracted in the longitudinal direction, the insertion length of the upper downspout 3 into the upper cylinder portion 10 is only shortened. , The insertion length of the upper cylinder portion 10 into the lower cylinder portion 11 and the insertion length of the lower cylinder portion 11 into the lower downspout 4 are not shortened. Therefore, in the downspout structure 1 of the first embodiment, even if the upper downspout 3 and the lower downspout 4 are thermally contracted in the longitudinal direction, the upper cylinder portion 10 and the lower downspout 4 are affected by wind or the like. It is possible to prevent the lower cylinder portion 11 from coming off.

さらに、実施形態１の縦樋構造１は、下記の第二の特徴を付加的に備える。 Further, the downspout structure 1 of the first embodiment additionally has the following second feature.

すなわち、実施形態１の縦樋構造１では、下縦樋４は、筒状の本体部４０と、本体部４０の上端部に取り付けられる筒状の接続部材４１とを含む。接続部材４１の上端部が、下縦樋４の上端部を構成している。 That is, in the downspout structure 1 of the first embodiment, the lower downspout 4 includes a cylindrical main body 40 and a tubular connecting member 41 attached to the upper end of the main body 40. The upper end of the connecting member 41 constitutes the upper end of the lower downspout 4.

第二の特徴を備えることで、実施形態１の縦樋構造１では、下筒部１１が接続される下縦樋４の上端部（つまり接続部材４１）を上述した寸法関係を有するように形成しやすく、地震が起こった際には、下筒部１１が下縦樋４の上端部から外れやすい。 By providing the second feature, in the downspout structure 1 of the first embodiment, the upper end portion (that is, the connecting member 41) of the lower downspout 4 to which the lower downspout portion 11 is connected is formed so as to have the above-mentioned dimensional relationship. In the event of an earthquake, the lower cylinder portion 11 is likely to come off from the upper end portion of the lower downspout 4.

さらに、実施形態１の縦樋構造１は、下記の第三の特徴を付加的に備える。 Further, the downspout structure 1 of the first embodiment additionally has the following third feature.

すなわち、実施形態１の縦樋構造１では、下縦樋４を下部構造体２１に固定する下固定具６と、上縦樋３を上部構造体２０に固定する上固定具７とをさらに備える。 That is, the downspout structure 1 of the first embodiment further includes a lower fixture 6 for fixing the lower downspout 4 to the lower structure 21, and an upper fixture 7 for fixing the upper downspout 3 to the upper structure 20. ..

第三の特徴を備えることで、実施形態１の縦樋構造１では、構造体２０，２１の相対位置の変化に対応して、上縦樋３に接続された上筒部１０と下縦樋４との相対位置が変化しやすく、この間に位置する下筒部１１が地震の際に傾きやすくて外れやすい。 By providing the third feature, in the downspout structure 1 of the first embodiment, the upper cylinder portion 10 and the lower downspout connected to the upper downspout 3 correspond to the change in the relative positions of the structures 20 and 21. The relative position with 4 is easy to change, and the lower cylinder portion 11 located between them is easy to tilt and come off in the event of an earthquake.

さらに、実施形態１の縦樋構造１は、下記の第四の特徴を付加的に備える。 Further, the downspout structure 1 of the first embodiment additionally has the following fourth feature.

すなわち、実施形態１の縦樋構造１では、下固定具６は、下部構造体２１に装着される第一装着部６０と、下縦樋４に装着される第二装着部６１と、第一装着部６０及び第二装着部６１を連結する連結部６２とを有する。連結部６２は、第一装着部６０と第二装着部６１との相対位置を変更できるように構成されている。 That is, in the downspout structure 1 of the first embodiment, the lower fixture 6 has a first mounting portion 60 mounted on the lower structure 21 and a second mounting portion 61 mounted on the lower downspout 4. It has a mounting portion 60 and a connecting portion 62 that connects the second mounting portion 61. The connecting portion 62 is configured so that the relative positions of the first mounting portion 60 and the second mounting portion 61 can be changed.

第四の特徴を備えることで、実施形態１の縦樋構造１では、地震後の構造体２０，２１の相対位置に残留変位がある場合に、第一装着部６０に対する第二装着部６１の位置（つまり下縦樋４の位置）を変更することができる。これにより、実施形態１の縦樋構造１では、地震後の構造体２０，２１の相対位置に残留変位がある場合でも、下縦樋４を上縦樋３の真下に配置することができ、中間樋５で上縦樋３と下縦樋４とを連結することができる。 By providing the fourth feature, in the downspout structure 1 of the first embodiment, when there is a residual displacement in the relative positions of the structures 20 and 21 after the earthquake, the second mounting portion 61 with respect to the first mounting portion 60 The position (that is, the position of the lower downspout 4) can be changed. As a result, in the downspout structure 1 of the first embodiment, the lower downspout 4 can be arranged directly under the upper downspout 3 even if there is a residual displacement in the relative positions of the structures 20 and 21 after the earthquake. The upper downspout 3 and the lower downspout 4 can be connected by the intermediate gutter 5.

以上、本発明を添付図面に示す実施形態に基づいて説明したが、本発明は上記の実施形態に限定されるものではなく、本発明の意図する範囲内であれば、適宜の設計変更が可能である。 Although the present invention has been described above based on the embodiments shown in the accompanying drawings, the present invention is not limited to the above-described embodiments, and appropriate design changes can be made within the scope of the present invention. Is.

１縦樋構造
２免震建物
２０上部構造体
２１下部構造体
２２免震機構
３上縦樋
４下縦樋
４０本体部
４１接続部材
５中間樋
６下固定具
６０第一装着部
６１第二装着部
６２連結部
７上固定具
１０上筒部
１１下筒部
１２上大筒部
１３上小筒部
１４下大筒部
１５下小筒部
Ｂ１上小筒部の上下長さ
ｄ１上小筒部の外寸
Ｄ１下大筒部の上端部の内寸
ｔ１下大筒部の上端部の肉厚
Ｂ２下小筒部の上下長さ
ｄ２下小筒部の外寸
Ｄ２下縦樋の上端部の内寸
ｔ２下縦樋の上端部の肉厚 1 Vertical gutter structure 2 Seismic isolation building 20 Upper structure 21 Lower structure 22 Seismic isolation mechanism 3 Upper vertical gutter 4 Lower vertical gutter 40 Main body 41 Connecting member 5 Intermediate gutter 6 Lower fixture 60 First mounting part 61 Second mounting Part 62 Connecting part 7 Upper fixture 10 Upper cylinder part 11 Lower cylinder part 12 Upper large cylinder part 13 Upper small cylinder part 14 Lower large cylinder part 15 Lower small cylinder part B1 Vertical length of upper small cylinder part d1 Outside the upper small cylinder part Dimension D1 Inner dimension of the upper end of the lower barrel t1 Thickness of the upper end of the lower barrel B2 Vertical length of the lower barrel d2 Outer dimension of the lower barrel D2 Inner dimension t2 of the upper end of the lower downspout Thickness of the upper end of the downspout

Claims

A seismic isolation mechanism located between the upper structure and the lower structure is provided, and the relative position of the upper structure and the lower structure in the horizontal direction is changed via the seismic isolation mechanism. It is a vertical trough structure installed in a seismic isolated building.
An upper downspout attached to the superstructure and
The lower downspout located below the upper downspout,
It is provided with an intermediate gutter that connects the upper gutter and the lower gutter in communication with each other.
The intermediate gutter
The upper cylinder portion that constitutes the upper part of the intermediate gutter and
Including the lower cylinder portion constituting the lower part of the intermediate gutter,
The upper cylinder portion has an upper cylinder portion that is communicated with the upper vertical gutter and an upper cylinder portion that extends downward from the upper cylinder portion and has an outer dimension smaller than that of the upper cylinder portion.
The lower cylinder portion communicates with the lower cylinder portion and the lower cylinder portion, and extends downward from the lower cylinder portion, has a smaller outer dimension than the lower cylinder portion, and communicates with the lower vertical gutter. It has a lower small cylinder part
The vertical length of the upper small cylinder is B1, the outer dimension of the upper small cylinder is d1, the inner dimension of the upper end of the lower cylinder is D1, the wall thickness of the upper end of the lower cylinder is t1, and the above. When the vertical length of the lower barrel is B2, the outer dimension of the lower barrel is d2, the inner dimension of the upper end of the lower downspout is D2, and the wall thickness of the upper end of the lower downspout is t2. NS,
B1 ≦ (1 + t1 / D1) (D12-d12) 1/2
B2 ≦ (1 + t2 / D2) (D22-d22) 1/2
Near the relationship is,
The upper large cylinder portion has a vertical gutter structure characterized in that it is connected to the upper vertical gutter so as to be slidable in the vertical direction.

The lower downspout is
Includes a cylindrical main body and a tubular connecting member attached to the upper end of the main body.
The downspout structure according to claim 1, wherein the upper end portion of the connecting member constitutes the upper end portion of the lower downspout.

The vertical according to claim 1 or 2, further comprising a lower fixing tool for fixing the lower downspout to the lower structure, and an upper fixing tool for fixing the upper downspout to the upper structure. Gutter structure.

The lower fixture is a connecting portion that connects a first mounting portion mounted on the lower structure, a second mounting portion mounted on the lower downspout, and the first mounting portion and the second mounting portion. And have
The downspout structure according to claim 3, wherein the connecting portion is configured so that the relative position between the first mounting portion and the second mounting portion can be changed.