JP2019143366A - Staircase - Google Patents
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- JP2019143366A JP2019143366A JP2018028513A JP2018028513A JP2019143366A JP 2019143366 A JP2019143366 A JP 2019143366A JP 2018028513 A JP2018028513 A JP 2018028513A JP 2018028513 A JP2018028513 A JP 2018028513A JP 2019143366 A JP2019143366 A JP 2019143366A
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Abstract
Description
本発明は、下階躯体と上階躯体との間に設けられる階段に関する。 The present invention relates to a staircase provided between a lower-floor housing and an upper-floor housing.
建物の振動を防止する為に、建物の架構に制振装置を設ける構造が知られている。 In order to prevent the vibration of the building, a structure in which a vibration control device is provided on the building frame is known.
このような構造では、複数箇所の架構内で制振装置の設置場所を確保しなければならず、建物の設計自由度が損なわれるというデメリットを有する。 Such a structure has a demerit that the installation location of the vibration damping device must be secured in a plurality of frames, and the degree of freedom in designing the building is impaired.
本発明は係る事実を考慮し、架構内へ設置する制振装置の数を削減することができる階段を提供する。 In consideration of such facts, the present invention provides a staircase that can reduce the number of vibration control devices installed in a frame.
第一の態様は、蹴込部と踏面部で構成され、一部又は全部が振動エネルギーを吸収するエネルギー吸収部材で形成された階段本体と、前記階段本体の上端部を上階躯体に固定する上部固定部と、前記階段本体の下端部を下階躯体に固定する下部固定部と、上端部が前記上階躯体に支持されるとともに下端部が前記下階躯体に支持され、上端部又は下端部の少なくとも一方が長さ方向へ移動が許容されたささら桁と、前記ささら桁に設けられ前記階段本体の前記踏面部を支持する支持部と、を有する。 The first aspect includes a staircase body formed of an energy absorbing member configured to include a kicking portion and a tread surface portion, part or all of which absorbs vibration energy, and an upper portion for fixing the upper end portion of the staircase body to the upper floor housing. A fixing portion, a lower fixing portion for fixing the lower end portion of the staircase body to the lower floor housing, an upper end portion supported by the upper floor housing and a lower end portion supported by the lower floor housing, an upper end portion or a lower end portion At least one of which has a saddle girder that is allowed to move in the length direction, and a support portion that is provided on the strut girder and supports the tread portion of the staircase body.
すなわち、地震時等に建物が揺れると、上階躯体と下階躯体が相対移動して、階段本体が変形、或いは長さ方向に伸縮する。このとき、階段本体の一部又は全部は、エネルギー吸収部材で形成されており、階段本体が変形、或いは長さ方向に伸縮することで、建物の振動を抑制することができる。
また、ささら桁は、長さ方向への移動が許容されているため、階段本体の変形を制限しない。
That is, when the building is shaken during an earthquake or the like, the upper-floor housing and the lower-floor housing are relatively moved, and the staircase body is deformed or stretched in the length direction. At this time, a part or all of the staircase body is formed of an energy absorbing member, and the vibration of the building can be suppressed by the deformation of the staircase body or expansion and contraction in the length direction.
Further, since the sagittal girder is allowed to move in the length direction, the deformation of the staircase body is not limited.
階段に建物の振動抑制機能を付与することで、他の箇所へ設置する制振装置の数を少なくすることができる。 By adding the building vibration suppression function to the stairs, the number of vibration control devices installed in other locations can be reduced.
第二の態様は、前記エネルギー吸収部材は、低降伏点鋼材である。 In a second aspect, the energy absorbing member is a low yield point steel material.
すなわち、低降伏点鋼材が、地震力で降伏して塑性することで、建物へ入力された振動エネルギーを吸収することができる。これにより、構成の簡素化を図ることができる。 That is, the low yield point steel material can absorb the vibration energy input to the building by yielding and plasticizing by the seismic force. Thereby, simplification of a structure can be achieved.
第三の態様は、前記ささら桁と前記階段本体の前記踏面部の端部との間に設けられ、前記ささら桁と前記踏面部との直接接触を抑制する弾性部材と、前記踏面部の前記支持部からの脱落を抑制する抑制手段と、を備えている。 A third aspect is provided between the sagging girder and an end portion of the tread surface portion of the staircase body, and an elastic member that suppresses direct contact between the sagging girder and the tread surface portion, and the tread surface portion. And suppression means for suppressing drop-off from the support portion.
すなわち、階段本体が変形、或いは長さ方向に伸縮した際、支持部から踏面部が脱落することを抑制できる。 That is, when the staircase body is deformed or expanded or contracted in the length direction, it is possible to prevent the tread surface portion from dropping from the support portion.
また、ささら桁と踏面部との間に弾性部材を設けることで、階段本体が振動したときの擦れ音を抑制することができるとともに、階段幅方向に揺れた際にささら桁と踏面部との直接的な衝突を抑制することができる。 In addition, by providing an elastic member between the spar girder and the tread part, it is possible to suppress rubbing noise when the stairs body vibrates, and between the spar girder and the tread part when swaying in the stairs width direction. Direct collision can be suppressed.
第四の態様は、前記抑制手段は、前記踏面部又は前記支持部に設けられ前記階段本体の長さ方向に長い長穴と、前記長穴へ挿入され前記踏面部及び前記支持部を締結する締結部材と、を備えている。 According to a fourth aspect, the restraining means is provided in the tread surface portion or the support portion and is elongated in the length direction of the staircase body, and is inserted into the elongated hole to fasten the tread surface portion and the support portion. A fastening member.
すなわち、踏面部と支持部が締結部材で締結された状態で、踏面部が長穴に沿って移動する。このため、支持部に対する踏面部の面内方向の移動を許容するとともに、踏面部の脱落を抑制することができる。 That is, the tread portion moves along the elongated hole in a state where the tread portion and the support portion are fastened by the fastening member. For this reason, while allowing the movement of the tread portion in the in-plane direction with respect to the support portion, it is possible to suppress the tread portion from falling off.
本態様によれば、架構内へ設置する制振装置の数を削減することができる。 According to this aspect, the number of vibration control devices installed in the frame can be reduced.
＜第一実施形態＞
以下、本発明の第一実施形態に係る階段を図面に従って説明する。
<First embodiment>
Hereinafter, steps according to a first embodiment of the present invention will be described with reference to the drawings.
図１は、階段１０を示す断面図であり、階段１０は建物の中に設けられている。この階段１０は、途中に折り返し部分が無い直線形状とされており、建物の下階と上階とを直線状に繋いでいる。 FIG. 1 is a cross-sectional view showing a staircase 10, and the staircase 10 is provided in a building. The staircase 10 has a linear shape with no folded part in the middle, and connects the lower floor and the upper floor of the building in a straight line.
階段１０は、階段本体１２と、階段本体１２の両側部に設けられたささら桁１４（一方のみ図示）とを備えており、各ささら桁１４の上部には、手すり１６が設けられている。 The staircase 10 includes a staircase body 12 and sparder girders 14 (only one is shown) provided on both sides of the stairs main body 12.
ここで、本実施形態では、階段本体１２を両側部から支持するささら桁１４を例に挙げて説明するが、これに限定されるものではない。例えば、階段本体１２の中央部や側部を下から支える板状のささら桁であっても良い。 Here, in the present embodiment, the description will be given by taking as an example the spar 14 that supports the staircase body 12 from both sides, but the present invention is not limited to this. For example, it may be a plate-shaped sheathing girder that supports the central part and the side part of the staircase body 12 from below.
（階段本体）
階段本体１２は、設置状態において、鉛直方向に起立した蹴込部１８と、水平方向へ延出する踏面部２０とが長さ方向に交互に繰り返し形成されており、蹴込部１８の上縁から踏面部２０が延出するとともに踏面部２０の縁部に蹴込部１８が起立する。
(Stair body)
In the installed state, the staircase body 12 is formed with a kicking portion 18 standing upright in the vertical direction and a treading surface portion 20 extending in the horizontal direction alternately in the length direction. While the surface part 20 extends, the kick part 18 stands on the edge part of the tread part 20.
ここで、本実施形態の階段本体１２は、蹴込部１８の上縁より踏面部２０が延出するとともに、踏面部２０の縁部より蹴込部１８が起立した構造を例に挙げて説明するが、この構造に限定されるものではない。例えば、上側の踏面部２０が下側の踏面部２０の上へ張り出した階段であってもよい。 Here, the staircase body 12 of the present embodiment will be described by taking as an example a structure in which the tread surface portion 20 extends from the upper edge of the kick portion 18 and the kick portion 18 stands up from the edge portion of the tread portion 20. The structure is not limited to this. For example, it may be a staircase in which the upper tread portion 20 projects over the lower tread portion 20.
この階段本体１２の下端部には、下部固定部２２が設けられており、下部固定部２２は、例えば締結部材２４によって下階躯体２６に固定されている。下階躯体２６としては、大梁２８や下階スラブ３０が挙げられ、本実施形態では、大梁２８上に設けられた下階スラブ３０に下部固定部２２が固定されている。 A lower fixing portion 22 is provided at the lower end portion of the staircase main body 12, and the lower fixing portion 22 is fixed to the lower floor casing 26 by, for example, a fastening member 24. Examples of the lower floor frame 26 include a large beam 28 and a lower floor slab 30. In this embodiment, the lower fixing portion 22 is fixed to the lower floor slab 30 provided on the large beam 28.
階段本体１２の上端部には、上部固定部３２が設けられており、上部固定部３２は、例えば締結部材３４によって上階躯体３６に固定されている。上階躯体３６としては、大梁３８や上階スラブ４０が挙げられ、本実施形態では、大梁３８上に設けられた上階スラブ４０に上部固定部３２が固定されている。 An upper fixing portion 32 is provided at the upper end portion of the staircase body 12, and the upper fixing portion 32 is fixed to the upper floor housing 36 by a fastening member 34, for example. Examples of the upper floor housing 36 include a large beam 38 and an upper floor slab 40. In this embodiment, the upper fixing portion 32 is fixed to the upper floor slab 40 provided on the large beam 38.
そして、階段本体１２の中間部には、踏面部２０より面積が広い踊り場４２が設けられており、階段本体１２は、踊り場４２を境とした下階側の下部階段部４４と、上階側の上部階段部４６とで構成される。 A landing 42 having a larger area than the tread portion 20 is provided in the middle of the staircase body 12. The staircase body 12 includes a lower staircase portion 44 on the lower floor with the landing 42 as a boundary, and an upper floor side. And the upper staircase portion 46.
この階段本体１２は、折曲された金属板で構成され、上下階の層間変形で変形される階段本体１２は、全体が長さ方向へ伸縮して地震力による振動エネルギーを吸収するエネルギー吸収部材で構成されている。これにより、階段本体１２の全域で地震力を吸収することができる。
また、階段本体１２は、屈曲部が連続しているので、スロープと比較すると、座屈することがなく、変形性能も大きい。
The staircase body 12 is formed of a bent metal plate, and the staircase body 12 deformed by interlayer deformation between the upper and lower floors is an energy absorbing member that expands and contracts in the length direction and absorbs vibration energy due to seismic force. It consists of Thereby, seismic force can be absorbed in the whole area of the staircase body 12.
Moreover, since the bending part is continuing, the staircase main body 12 does not buckle compared with a slope, and its deformation | transformation performance is also large.
そして、階段本体１２は、下部固定部２２、上部固定部３２、蹴込部１８、踏面部２０、及び踊り場４２の総てが低降伏点鋼で構成されており、エネルギー吸収量が高められている。低降伏点鋼とは、一般的な軟鋼に比べ強度が低く、延性が極めて高い鋼材をいう。 And as for the staircase main body 12, all of the lower fixing | fixed part 22, the upper fixing | fixed part 32, the kicking part 18, the tread part 20, and the landing 42 are comprised with the low yield point steel, and the energy absorption amount is raised. . Low yield point steel refers to a steel material that has lower strength and higher ductility than common mild steel.
ここで、本実施形態では、階段本体１２総てを金属板、具体的には低降伏点鋼で構成し、階段本体１２の全部をエネルギー吸収部材としたが、これに限定されるものではない。例えば、蹴込部１８のみを金属板や低降伏点鋼で構成したり、踏面部２０のみを金属板や低降伏点鋼で構成したりすることで、階段本体１２の一部をエネルギー吸収部材としてもよい。 Here, in this embodiment, the entire staircase body 12 is made of a metal plate, specifically, a low yield point steel, and the entire staircase body 12 is an energy absorbing member. However, the present invention is not limited to this. . For example, a part of the staircase main body 12 is used as an energy absorbing member by configuring only the kicking portion 18 with a metal plate or low yield point steel, or configuring only the tread surface portion 20 with a metal plate or low yield point steel. Also good.
（ささら桁）
ささら桁１４は、例えば金属板によって形成されており、階段本体１２に沿った形状に形成されている。すなわち、ささら桁１４は、階段本体１２の下部固定部２２に沿って延在する下端部５０と、下部階段部４４に沿って延在する下部傾斜部５２と、踊り場４２に沿って延在する中間部５６とを有する。また、ささら桁１４は、上部階段部４６に沿って延在する上部傾斜部５８と、上部固定部３２に沿って延在する上端部６０とを有する。
(Sasara digit)
The scabbard 14 is formed of, for example, a metal plate, and is formed in a shape along the staircase body 12. That is, the saddle girder 14 extends along the landing 42 and the lower end portion 50 extending along the lower fixing portion 22 of the staircase body 12, the lower inclined portion 52 extending along the lower staircase portion 44, and the landing 42. And an intermediate portion 56. Further, the counterspar 14 has an upper inclined portion 58 that extends along the upper stepped portion 46 and an upper end portion 60 that extends along the upper fixing portion 32.
ささら桁１４は、上端部６０が上階躯体３６に固定されている。一例として、ささら桁１４の上端部６０を大梁３８を溶接する方法が挙げられるが、これに限定されるものではない。 The upper end 60 of the sagger 14 is fixed to the upper floor housing 36. As an example, there is a method of welding the upper beam 60 to the upper end portion 60 of the spar 14, but the method is not limited to this.
一方、ささら桁１４の下端部５０は、固定されておらず、階段本体１２の長さ方向へ移動が許容された状態で下階躯体２６に支持されている。 On the other hand, the lower end 50 of the spar 14 is not fixed, and is supported by the lower floor casing 26 in a state in which movement in the length direction of the staircase body 12 is allowed.
ささら桁１４には、図２に示すように、階段本体１２の踏面部２０を支持する支持部７０が設けられている。各支持部７０は、間隔をおいて複数配置されており（一箇所のみ図示）、階段本体１２の踏面部２０を所定の間隔おきに支持する。 As shown in FIG. 2, the support beam 70 is provided with a support portion 70 that supports the tread surface portion 20 of the staircase body 12. A plurality of support portions 70 are arranged at intervals (only one place is illustrated), and supports the tread surface portion 20 of the staircase body 12 at predetermined intervals.
支持部７０は、ささら桁１４に溶着された固定片７０Ａ、及び踏面部２０を下方から支持する支持片７０Ｂを有したアングル材で構成されており、支持片７０Ｂには、図３にも示すように、締結部材７２が挿通される丸穴７４が形成されている。 The support portion 70 is formed of an angle member having a fixed piece 70A welded to the sheathing girder 14 and a support piece 70B that supports the tread portion 20 from below. The support piece 70B is also shown in FIG. Thus, a round hole 74 through which the fastening member 72 is inserted is formed.
この丸穴７４に対向する踏面部２０には、階段本体１２の長さ方向に延在する長穴７６が形成されており、この長穴７６には、丸穴７４を挿通したボルトからなる締結部材７２のネジ部７２Ａが貫通する。ネジ部７２Ａには、ワッシャ７８が装着されるとともにナット８０が螺着されており、この締結部材７２及びナット８０によって、踏面部２０及び支持部７０を締結する。これにより、階段本体１２の踏面部２０の支持部７０からの脱落を抑制する抑制手段８２が構成される。 A long hole 76 extending in the length direction of the staircase main body 12 is formed in the tread surface portion 20 facing the round hole 74, and the long hole 76 is a fastening made of a bolt inserted through the round hole 74. The threaded portion 72A of the member 72 penetrates. A washer 78 is attached to the screw portion 72 </ b> A and a nut 80 is screwed. The tread surface portion 20 and the support portion 70 are fastened by the fastening member 72 and the nut 80. Thereby, the suppression means 82 which suppresses the drop-off | omission from the support part 70 of the tread surface part 20 of the staircase main body 12 is comprised.
ここで、本実施形態では、支持部７０側を丸穴７４とし踏面部２０側を長穴７６とすることで、踏面部２０を長さ方向へスライド可能としたが、これに限定されるものではない。例えば、支持部７０に長穴を設けて踏面部２０を長さ方向へスライド可能としてもよい。また、支持部７０と踏面部２０とを貫通するピンによって支持部７０からの踏面部２０の脱落を抑制してもよい。 Here, in the present embodiment, the support surface 70 side is made the round hole 74 and the tread surface portion 20 side is made the long hole 76 so that the tread surface portion 20 can be slid in the length direction. However, the present invention is not limited to this. is not. For example, a long hole may be provided in the support portion 70 so that the tread surface portion 20 can be slid in the length direction. Moreover, you may suppress the fall of the tread part 20 from the support part 70 by the pin which penetrates the support part 70 and the tread part 20.
このささら桁１４と階段本体１２の踏面部２０の端部との間には、ささら桁１４と踏面部２０との直接接触を抑制する弾性部材９０が設けられている。この弾性部材９０は、支持部７０の支持片７０Ｂ上に設けられた矩形状のゴム材で構成されている。これにより、この弾性部材９０によって、振動時に生じ得るささら桁１４と階段本体１２との擦れ音を抑制するとともに、階段幅方向に揺れた際にささら桁１４と踏面部２０との直接的な衝突を抑制することができる。 An elastic member 90 that suppresses direct contact between the sheathing girder 14 and the tread surface portion 20 is provided between the sheathing girder 14 and the end portion of the tread surface portion 20 of the staircase body 12. The elastic member 90 is made of a rectangular rubber material provided on the support piece 70 </ b> B of the support portion 70. As a result, the elastic member 90 suppresses the rubbing noise between the spar 14 and the stair body 12 that may occur during vibration, and the spar 14 and the tread 20 directly collide when swaying in the stairs width direction. Can be suppressed.
踏面部２０には、図３に示したように、突出した締結部材７２を避けるための穴９２が形成された中間板９４が積層されており、この中間板９４上は、平板９６が積層されている。これにより、踏面部２０に突出した締結部材７２を隠すとともに、階段１０の踏面が平坦とされている。 As shown in FIG. 3, an intermediate plate 94 in which a hole 92 for avoiding the protruding fastening member 72 is formed is laminated on the tread portion 20, and a flat plate 96 is laminated on the intermediate plate 94. ing. As a result, the fastening member 72 protruding from the tread portion 20 is hidden, and the tread surface of the staircase 10 is flat.
（作用・効果）
以上の構成に係る本実施形態の作用を説明する。
(Action / Effect)
The effect | action of this embodiment which concerns on the above structure is demonstrated.
地震時等に建物が揺れると、上階躯体３６と下階躯体２６が相対移動し、階段本体１２が変形、或いは長さ方向に伸縮する。このとき、階段本体１２の一部又は全部、本実施形態にあっては階段本体１２の全部がエネルギー吸収部材で形成されており、階段本体１２が変形、或いは長さ方向に伸縮することで、建物の振動を抑制することができる。 When the building shakes during an earthquake or the like, the upper floor housing 36 and the lower floor housing 26 move relative to each other, and the staircase body 12 is deformed or stretched in the length direction. At this time, a part or all of the staircase body 12, in this embodiment, all of the staircase body 12 is formed of an energy absorbing member, and the staircase body 12 is deformed or stretched in the length direction, Vibration of the building can be suppressed.
このため、建物への制振装置の設置箇所を少なくすることができ、建物の設計自由度を向上することができる。 For this reason, the installation location of the damping device in a building can be decreased, and the design freedom of a building can be improved.
また、ささら桁１４を構成する桁部材間でエネルギーを吸収する場合と比較して、エネルギー吸収範囲を階段本体１２の長さ方向に広げることができる。これにより、エネルギー吸収量を増大することができる。 Further, the energy absorption range can be expanded in the length direction of the staircase main body 12 as compared with the case where energy is absorbed between the girder members constituting the sheath girder 14. Thereby, the amount of energy absorption can be increased.
そして、エネルギー吸収部材の範囲を変える等してエネルギー吸収範囲を可変することで、エネルギー吸収性を調整することも可能となる。 And it becomes possible to adjust energy absorptivity by changing the energy absorption range by changing the range of the energy absorption member.
また、エネルギー吸収部材が低降伏点鋼材である。 The energy absorbing member is a low yield point steel material.
このため、低降伏点鋼材が、地震力で降伏して塑性することで、建物へ入力された振動エネルギーを吸収することができる。これにより、階段本体に振動エネルギー吸収部材を構成する制振部材を別途設ける必要が無いので、構成の簡素化を図ることができる。 For this reason, the low-yield-point steel material can absorb the vibration energy input into the building by yielding and plasticizing with an earthquake force. Thereby, since it is not necessary to separately provide the vibration damping member which comprises a vibration energy absorption member in a staircase main body, simplification of a structure can be achieved.
さらに、ささら桁１４と階段本体１２の踏面部２０との間には弾性部材９０が設けられ、踏面部２０の支持部７０からの脱落を抑制する抑制手段８２を備えている。 Further, an elastic member 90 is provided between the sheathing girder 14 and the tread surface portion 20 of the staircase main body 12, and includes a suppression means 82 that suppresses the tread surface portion 20 from falling off from the support portion 70.
このため、階段本体１２が変形、或いは長さ方向に伸縮する際の支持部７０からの踏面部２０の脱落を抑制することができる。 For this reason, dropping of the tread part 20 from the support part 70 when the staircase main body 12 deforms or expands and contracts in the length direction can be suppressed.
また、ささら桁１４と踏面部２０との間に弾性部材９０を設けることで、階段本体１２が振動したときの擦れ音や衝突を抑制することができる。 In addition, by providing the elastic member 90 between the sheathing girder 14 and the tread surface portion 20, it is possible to suppress a rubbing sound and a collision when the staircase body 12 vibrates.
さらに、踏面部２０及び支持部７０を締結する締結部材７２が、踏面部２０又は支持部７０に設けられ長穴７６に沿って移動することで、支持部７０に対する踏面部２０の面内方向の移動を許容するとともに、踏面部２０の脱落を抑制することができる。 Furthermore, the fastening member 72 that fastens the tread portion 20 and the support portion 70 is provided in the tread portion 20 or the support portion 70 and moves along the long hole 76, thereby causing the tread portion 20 in the in-plane direction with respect to the support portion 70. While allowing the movement, it is possible to suppress the tread 20 from falling off.
＜第二実施形態＞
図４は、第二実施形態を示す図であり、第一実施形態と同一部分に付いては同符号を付して説明を割愛するとともに、異なる部分についてのみ説明する。
<Second embodiment>
FIG. 4 is a diagram showing the second embodiment, where the same parts as those of the first embodiment are denoted by the same reference numerals and the description thereof is omitted, and only different parts are described.
すなわち、本実施形態では、階段本体１２の踏面部２０と支持部７０との固定構造が異なり、踏面部２０には、下方へ向けて突出する締結部材の一例であるスタッドボルト１００が設けられている。このスタッドボルト１００は、支持部７０の支持片７０Ｂに設けられた穴１０２を挿通する。このスタッドボルト１００には、ワッシャ１０４が装着されるとともにナット１０６が螺着され、踏面部２０及び支持部７０を締結する。 That is, in this embodiment, the fixing structure of the tread portion 20 and the support portion 70 of the staircase body 12 is different, and the tread portion 20 is provided with a stud bolt 100 that is an example of a fastening member that protrudes downward. Yes. The stud bolt 100 is inserted through the hole 102 provided in the support piece 70 </ b> B of the support portion 70. The stud bolt 100 is fitted with a washer 104 and a nut 106 is screwed to fasten the tread surface 20 and the support 70.
支持部７０の穴１０２は、階段本体１２の長さ方向に延在する長穴で構成され、支持部７０に対する踏面部２０の面内方向の移動を許容するとともに、踏面部２０の脱落を抑制する。 The hole 102 of the support portion 70 is formed by an elongated hole extending in the length direction of the staircase body 12 and allows the tread surface portion 20 to move in the in-plane direction with respect to the support portion 70 and suppresses the tread portion 20 from falling off. To do.
このような構造であっても、第一実施形態と同様の作用効果を奏する。 Even if it is such a structure, there exists an effect similar to 1st embodiment.
また、本実施形態では、締結部材が踏面部２０上に突出しないので、階段１０の踏面の仕上げが容易となる。 Moreover, in this embodiment, since a fastening member does not protrude on the tread part 20, finishing of the tread of the staircase 10 becomes easy.
＜第三実施形態＞
図５は、第三実施形態を示す図であり、第一実施形態と同一又は同等部分に付いては同符号を付して説明を割愛するとともに、異なる部分についてのみ説明する。
<Third embodiment>
FIG. 5 is a diagram showing the third embodiment. The same or equivalent parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted, and only different parts are described.
すなわち、本実施形態では、階段本体１２の踏面部２０と支持部７０との固定構造が異なり、踏面部２０に設けられたボルト穴１１０の外周部には、座繰り穴１１２が形成されている。ボルト穴１１０に挿通された締結部材の一例であるボルト１１４の頭部１１４Ａは、座繰り穴１１２に収容され、踏面部２０の一般面２０Ａからの突出が抑制される。 That is, in the present embodiment, the fixing structure of the tread surface portion 20 and the support portion 70 of the staircase body 12 is different, and a counterbore hole 112 is formed in the outer peripheral portion of the bolt hole 110 provided in the tread surface portion 20. . A head portion 114A of a bolt 114, which is an example of a fastening member inserted through the bolt hole 110, is accommodated in the counterbore hole 112, and the protrusion of the tread portion 20 from the general surface 20A is suppressed.
ボルト１１４のネジ部１１４Ｂは、支持部７０の支持片７０Ｂに設けられた穴１１６を貫通する。ボルト１１４のネジ部１１４Ｂには、ワッシャ１１８が装着されるとともにナット１２０が螺着され、踏面部２０及び支持部７０を締結する。 The screw part 114B of the bolt 114 passes through the hole 116 provided in the support piece 70B of the support part 70. A washer 118 is attached to the screw part 114B of the bolt 114, and a nut 120 is screwed to fasten the tread part 20 and the support part 70 together.
支持部７０の穴１１６は、階段本体１２の長さ方向に延在する長穴で構成され、支持部７０に対する踏面部２０の面内方向の移動を許容するとともに、踏面部２０の脱落を抑制する。 The hole 116 of the support portion 70 is formed by an elongated hole extending in the length direction of the staircase body 12 and allows the tread portion 20 to move in the in-plane direction with respect to the support portion 70 and suppresses the tread portion 20 from falling off. To do.
このような構造であっても、第一実施形態と同様の作用効果を奏する。 Even if it is such a structure, there exists an effect similar to 1st embodiment.
また、本実施形態では、ボルト１１４が踏面部２０の一般面２０Ａより突出しないので、階段１０の踏面の仕上げが容易となる。 Moreover, in this embodiment, since the bolt 114 does not protrude from the general surface 20A of the tread portion 20, the tread of the staircase 10 can be easily finished.
なお、前述した各形態では、締結部材７２、ボルト１００、１１４のネジ部７２Ａ、１１４Ｂにナット８０、１０６、１２０を螺着して、踏面部２０及び支持部７０を締結したが、これに限定されるものではない。 In addition, in each form mentioned above, although the nuts 80, 106, and 120 were screwed to the screw part 72A, 114B of the fastening member 72 and the volt | bolts 100, 114, and the tread surface part 20 and the support part 70 were fastened, it is limited to this. Is not to be done.
＜変形例＞
例えば、図６に示すように、第一ナット１３０及び第二ナット１３２からなるダブルナット１３４を締結部材７２やボルト１００、１１４に螺着する。そして、第一ナット１３０と踏面部２０あるいは支持部７０との間に隙間１３６を確保した状態で、ダブルナット１３４をロックする。
<Modification>
For example, as shown in FIG. 6, a double nut 134 including a first nut 130 and a second nut 132 is screwed to the fastening member 72 and the bolts 100 and 114. Then, the double nut 134 is locked in a state in which a gap 136 is secured between the first nut 130 and the tread surface portion 20 or the support portion 70.
これにより、踏面部２０の拘束力を制限することができ、支持部７０に対する踏面部２０の面内方向の移動を容易とすることができる。 Thereby, the restraining force of the tread surface portion 20 can be restricted, and the movement of the tread surface portion 20 with respect to the support portion 70 in the in-plane direction can be facilitated.
＜第四実施形態＞
図７は、第四実施形態を示す図であり、第一実施形態と同一又は同等部分に付いては同符号を付して説明を割愛するとともに、異なる部分についてのみ説明する。
<Fourth embodiment>
FIG. 7 is a diagram showing the fourth embodiment. The same or equivalent parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted, and only different parts are described.
本実施形態では、階段本体１２の踏面部２０と支持部７０との固定構造が異なり、ささら桁１４からは、階段本体１２の踏面部２０を上方から押える押え部１４０が延出している。この押え部１４０は、ささら桁１４に溶接された固定片１４０Ａと、固定片１４０Ａより踏面部２０に沿って延出する延出片１４０Ｂとを有するアングル材で構成される。 In the present embodiment, the fixing structure of the tread surface portion 20 of the staircase body 12 and the support portion 70 is different, and a presser portion 140 that presses the tread surface portion 20 of the staircase body 12 from above extends from the spar 14. The holding portion 140 is formed of an angle member having a fixed piece 140A welded to the sheathing girder 14 and an extending piece 140B extending from the fixed piece 140A along the tread surface portion 20.
このような構造であっても、第一実施形態と同様の作用効果を奏する。 Even if it is such a structure, there exists an effect similar to 1st embodiment.
また、本実施形態では、ささら桁１４に設けられた支持部７０と押え部１４０とによって階段本体１２の踏面部２０を挟持固定することができるので、踏面部２０を挿通するボルト等が不要となる。 Further, in the present embodiment, since the tread surface portion 20 of the staircase body 12 can be clamped and fixed by the support portion 70 and the presser portion 140 provided on the sheathing girder 14, a bolt or the like for inserting the tread surface portion 20 is not necessary. Become.
このため、踏面部２０からボルトが突出することが無く、階段１０の踏面の仕上げが容易となる。 For this reason, a bolt does not protrude from the tread part 20, and finishing of the tread of the stairs 10 becomes easy.
１０ 階段
１２ 階段本体
１４ ささら桁
１８ 蹴込部
２０ 踏面部
２６ 下階躯体
２８ 大梁
３０ 下階スラブ
３２ 上部固定部
３６ 上階躯体
３８ 大梁
４０ 上階スラブ
５０ 下端部
６０ 上端部
７０ 支持部
７２ 締結部材
７６ 長穴
８２ 抑制手段
９０ 弾性部材
９２ 穴
１００ ボルト
１００ スタッドボルト
１０２ 穴
１１４ ボルト
１１６ 穴
DESCRIPTION OF SYMBOLS 10 Stairs 12 Stair body 14 Sasara girder 18 Kicking part 20 Tread part 26 Lower floor frame 28 Large beam 30 Lower floor slab 32 Upper fixed part 36 Upper floor frame 38 Large beam 40 Upper floor slab 50 Lower end part 60 Upper part 70 Support part 72 Fastening member 76 Long hole 82 Suppression means 90 Elastic member 92 Hole 100 Bolt 100 Stud bolt 102 Hole 114 Bolt 116 Hole
Claims (4)
前記階段本体の上端部を上階躯体に固定する上部固定部と、
前記階段本体の下端部を下階躯体に固定する下部固定部と、
上端部が前記上階躯体に支持されるとともに下端部が前記下階躯体に支持され、上端部又は下端部の少なくとも一方が長さ方向へ移動が許容されたささら桁と、
前記ささら桁に設けられ前記階段本体の前記踏面部を支持する支持部と、
を有する階段。 A staircase body composed of a kicking portion and a tread surface portion, part or all of which is formed of an energy absorbing member that absorbs vibration energy,
An upper fixing part for fixing the upper end of the staircase body to the upper floor housing;
A lower fixing portion for fixing a lower end portion of the staircase body to a lower floor case;
An upper end is supported by the upper floor casing and a lower end is supported by the lower floor casing, and at least one of the upper end or the lower end is allowed to move in the length direction;
A support portion that is provided on the spar and supports the tread portion of the staircase body;
With staircase.
前記踏面部の前記支持部からの脱落を抑制する抑制手段と、
を備えた請求項１又は請求項２に記載の階段。 An elastic member provided between the sagittal girder and an end of the tread surface portion of the staircase body, and suppressing direct contact between the sagging girder and the tread surface portion;
Suppression means for suppressing the tread surface portion from falling off from the support portion;
The staircase of Claim 1 or Claim 2 provided with these.
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| JP2018028513A JP7009729B2 (en) | 2018-02-21 | 2018-02-21 | Stairs |
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| JP2018028513A JP7009729B2 (en) | 2018-02-21 | 2018-02-21 | Stairs |
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| JPS60102336U (en) * | 1983-12-19 | 1985-07-12 | 積水ハウス株式会社 | stair treads |
| JPS61110726U (en) * | 1984-12-25 | 1986-07-14 | ||
| JPH06158808A (en) * | 1991-03-08 | 1994-06-07 | Takenaka Komuten Co Ltd | Staircase |
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| JP2008274545A (en) * | 2007-04-25 | 2008-11-13 | Takenaka Komuten Co Ltd | Steel frame stairs |
| JP2013002240A (en) * | 2011-06-21 | 2013-01-07 | Shimizu Corp | Staircase and building structure |
| US20160102461A1 (en) * | 2014-10-14 | 2016-04-14 | Emeh, Inc. | Stair expansion joint system with freedom of movement between landings |
| JP2016176251A (en) * | 2015-03-20 | 2016-10-06 | 旭化成ホームズ株式会社 | building |
| KR200483770Y1 (en) * | 2016-12-06 | 2017-06-23 | 이상준 | Fallen object protector for stairs |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5944829U (en) * | 1982-09-18 | 1984-03-24 | 株式会社長谷川工務店 | PC treadle |
| JPS60102336U (en) * | 1983-12-19 | 1985-07-12 | 積水ハウス株式会社 | stair treads |
| JPS61110726U (en) * | 1984-12-25 | 1986-07-14 | ||
| JPH06158808A (en) * | 1991-03-08 | 1994-06-07 | Takenaka Komuten Co Ltd | Staircase |
| JPH07197618A (en) * | 1993-11-25 | 1995-08-01 | Sekisui Chem Co Ltd | Staircase mounting structure in building unit |
| JPH11159095A (en) * | 1997-11-28 | 1999-06-15 | Eidai Co Ltd | Positioning method for stair tread |
| JP2008274545A (en) * | 2007-04-25 | 2008-11-13 | Takenaka Komuten Co Ltd | Steel frame stairs |
| JP2013002240A (en) * | 2011-06-21 | 2013-01-07 | Shimizu Corp | Staircase and building structure |
| US20160102461A1 (en) * | 2014-10-14 | 2016-04-14 | Emeh, Inc. | Stair expansion joint system with freedom of movement between landings |
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| KR200483770Y1 (en) * | 2016-12-06 | 2017-06-23 | 이상준 | Fallen object protector for stairs |
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