JP2015200087A - fall prevention wall - Google Patents

fall prevention wall Download PDF

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JP2015200087A
JP2015200087A JP2014078552A JP2014078552A JP2015200087A JP 2015200087 A JP2015200087 A JP 2015200087A JP 2014078552 A JP2014078552 A JP 2014078552A JP 2014078552 A JP2014078552 A JP 2014078552A JP 2015200087 A JP2015200087 A JP 2015200087A
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reverse beam
fall prevention
steel
reinforced concrete
prevention wall
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JP6383557B2 (en
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健嗣 田中
Kenji Tanaka
健嗣 田中
隆史 河野
Takashi Kono
隆史 河野
太志 大堀
Futoshi Ohori
太志 大堀
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Takenaka Komuten Co Ltd
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Takenaka Komuten Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To form a fall prevention wall high in strength, while restraining work manhours.SOLUTION: A fall prevention wall 50 comprises a steel frame inverse beam 60 joined to a steel frame column and supporting a reinforced concrete slab 40 and a reinforced concrete wall 70, the reinforced concrete wall 70 being constituted of an inverse beam part 80 provided on the side of a web 62 of the steel frame inverse beam 60 and standing from the reinforced concrete slab 40 and an increasingly striking part 90 provided above an upper side flange 44 of the steel frame inverse beam 60. When installing the reinforced concrete wall 70, the steel frame inverse beam 60 is used as a concrete form.

Description

本発明は、落下防止壁に関する。   The present invention relates to a fall prevention wall.

特許文献１には、屋上設備機器の据付構造に関する技術が開示されている。この先行技術では、建屋の屋上に逆梁を突出配置させ、逆梁上に架台を掛け渡すように設置し、架台上に各種の設備機器を設置するとともに、配管及び配線を架台より吊り下げるように設置している。   Patent Document 1 discloses a technique related to the installation structure of rooftop equipment. In this prior art, the reverse beam protrudes from the roof of the building and is installed so as to hang the gantry on the reverse beam. Various equipment is installed on the gantry, and the piping and wiring are suspended from the gantry. It is installed in.

特許文献２には、複数本の柱の間に梁を設けたラーメン構造の外側構面を有し、該梁を区画された住戸区画の天井側と床側とに配置した多層建物に関する技術が開示されている。この先行技術では、少なくとも一つの該外側構面の最上端の梁を連続に逆梁に配置してその逆梁の上方部分を屋上へ突出させ、その突出した部分をパラペット構成部材としている。   Patent Document 2 discloses a technique related to a multi-layer building having an outer surface of a ramen structure in which a beam is provided between a plurality of pillars, and the beam is arranged on the ceiling side and the floor side of the partitioned unit compartment. It is disclosed. In this prior art, the uppermost beam of at least one outer construction surface is continuously arranged on the reverse beam, the upper part of the reverse beam protrudes to the roof, and the protruding part is used as a parapet component.

特許文献３には、立体駐車場の落下防止壁に関する技術が開示されている。この先行技術では、大梁がプレキャストコンクリートパネルの下部で外側から覆われるようにして、プレキャストコンクリートパネルを大梁に固定して立設し落下防止壁としている。   Patent Document 3 discloses a technique related to a fall prevention wall of a multilevel parking lot. In this prior art, the precast concrete panel is fixed to the large beam so that the large beam is covered from the outside at the lower part of the precast concrete panel, and is used as a fall prevention wall.

ここで、上記特許文献３は、プレキャストコンクリートパネルを大梁に固定して立設し落下防止壁としているので、コンクリート型枠の組み付けが必要なく、作業工数が少ない。しかし、落下防止壁を高強度化することに対して改善の余地があった。   Here, in the above-mentioned Patent Document 3, since a precast concrete panel is fixed to a large beam and is used as a fall prevention wall, it is not necessary to assemble a concrete formwork, and the number of work steps is small. However, there is room for improvement in increasing the strength of the fall prevention wall.

特開平５−１１３０１０号公報Japanese Patent Laid-Open No. 5-1113010 特開平８−３３８０６８号公報JP-A-8-338068 特開２０００−２７４７８号公報JP 2000-27478 A

本発明は、上記事実を鑑み、作業工数を抑えつつ、落下防止壁を高強度化することが目的である。   In view of the above facts, an object of the present invention is to increase the strength of a fall prevention wall while reducing the number of work steps.

請求項１の発明は、下部にコンクリートスラブが支持される鉄骨製逆梁と、前記鉄骨製逆梁を型枠の一部として打設され、前記コンクリートスラブから立ち上る鉄筋コンクリート製逆梁と、を備える。   The invention of claim 1 includes a steel reverse beam supported by a concrete slab at the lower part, and a steel reinforced reverse beam standing from the concrete slab, the steel reverse beam being placed as a part of a formwork. .

請求項１に記載の発明では、落下防止壁は鉄骨製逆梁と鉄筋コンクリート製逆梁とで構成されているので、高強度の落下防止壁が構築される。また、鉄骨製逆梁を型枠の一部として利用して鉄筋コンクリート製逆梁を打設するので、型枠を設ける工程と型枠を撤去する工程との一部が削減される。したがって、作業工数が抑えられると共に、落下防止壁が高強度化される。   In the first aspect of the present invention, since the fall prevention wall is composed of the steel reverse beam and the reinforced concrete reverse beam, a high strength fall prevention wall is constructed. Further, since the steel reinforced reverse beam is used as a part of the formwork and the reinforced concrete reverse beam is placed, part of the process of providing the formwork and the process of removing the formwork is reduced. Therefore, the work man-hour is reduced and the fall prevention wall is strengthened.

請求項２の発明は、前記鉄骨製逆梁には、前記鉄筋コンクリート製逆梁に接合する接合部が設けられている。   According to a second aspect of the present invention, the steel reverse beam is provided with a joint for joining to the reinforced concrete reverse beam.

請求項２に記載の発明では、接合部によって鉄骨製逆梁と鉄筋コンクリート製逆梁との接合強度が向上し、この結果、落下防止壁の強度が向上する。   In the invention according to claim 2, the joint strength between the steel reverse beam and the reinforced concrete reverse beam is improved by the joint portion, and as a result, the strength of the fall prevention wall is improved.

本発明によれば、作業工数を抑えつつ、落下防止壁を高強度化することができる。   According to the present invention, it is possible to increase the strength of the fall prevention wall while suppressing the number of work steps.

図２の１−１線に沿った断面図である。It is sectional drawing along the 1-1 line | wire of FIG. 構造物を平面視で見た模式図である。It is the schematic diagram which looked at the structure in planar view.

＜実施形態＞
本発明の一実施形態の落下防止壁について説明する。 <Embodiment>
The fall prevention wall of one Embodiment of this invention is demonstrated.

図２に示すように、構造物１０における駐車場として使用されている屋上１２の外周部１４とエレベータシャフト１６の外周部１８とに、本実施形態の落下防止壁５０が設けられている。なお、以降、屋上１２の外周部１４に設けられた落下防止壁５０で説明するが、エレベータシャフト１６の外周部１８に設けられた落下防止壁５０も同様の構造である。   As shown in FIG. 2, the fall prevention wall 50 of the present embodiment is provided on the outer peripheral portion 14 of the rooftop 12 and the outer peripheral portion 18 of the elevator shaft 16 that are used as a parking lot in the structure 10. Hereinafter, the fall prevention wall 50 provided on the outer peripheral portion 14 of the roof 12 will be described, but the fall prevention wall 50 provided on the outer peripheral portion 18 of the elevator shaft 16 has the same structure.

図１に示すように、落下防止壁５０は、鉄骨柱３０（図２も参照）に接合され鉄筋コンクリートスラブ４０を支持する鉄骨製逆梁６０と、逆梁部８０と増打部９０とで構成された鉄筋コンクリート壁７０と、で構成されている。なお、落下防止壁５０は、鉄骨製逆梁６０と、鉄筋コンクリート壁７０を構成する逆梁部８０とで、自動車の衝突による衝撃力に耐えうる強度を有するように構造設計がなされている。   As shown in FIG. 1, the fall prevention wall 50 includes a steel reverse beam 60 that is joined to a steel column 30 (see also FIG. 2) and supports a reinforced concrete slab 40, a reverse beam portion 80, and an increased hitting portion 90. The reinforced concrete wall 70 is made up of. In addition, the fall prevention wall 50 is structurally designed to have a strength capable of withstanding an impact force caused by an automobile collision by the steel reverse beam 60 and the reverse beam portion 80 constituting the reinforced concrete wall 70.

鉄骨製逆梁６０は、Ｈ形鋼で構成され、ウエブ６２と上側のフランジ６４とには、スタッド６３、６５が設けられている。鉄筋コンクリート壁７０は、鉄骨製逆梁６０のウエブ６２の側方に設けられ鉄筋コンクリートスラブ４０から立ち上る逆梁部８０と、鉄骨製逆梁６０の上側のフランジ６４の上方に設けられた増打部９０と、で構成されている。   The steel reverse beam 60 is made of H-shaped steel, and studs 63 and 65 are provided on the web 62 and the upper flange 64. The reinforced concrete wall 70 is provided on the side of the web 62 of the steel reverse beam 60 and rises from the reinforced concrete slab 40, and the increased hitting portion 90 provided above the upper flange 64 of the steel reverse beam 60. And is composed of.

なお、鉄骨製逆梁６０のウエブ６２に設けられたスタッド６３が逆梁部８０に埋設され、これにより鉄骨製逆梁６０と逆梁部８０とが接合されている。また、同様に、鉄骨製逆梁６０の上側のフランジ６４に設けられたスタッド６５が増打部９０に埋設され、これにより鉄骨製逆梁６０と増打部９０とが接合されている。   A stud 63 provided on the web 62 of the steel reverse beam 60 is embedded in the reverse beam portion 80, whereby the steel reverse beam 60 and the reverse beam portion 80 are joined. Similarly, a stud 65 provided on the upper flange 64 of the steel reverse beam 60 is embedded in the increased hitting portion 90, whereby the steel reverse beam 60 and the increased hitting portion 90 are joined.

鉄筋コンクリート壁７０の逆梁部８０には、梁主筋８２とせん断補強筋８４とが配筋されている。梁主筋８２は、逆梁部８０の外周部分に間隔をあけて梁方向に沿って配筋されている。せん断補強筋８４は、外形が略矩形環状とされ、複数の梁主筋８２を囲むように配筋されると共に、梁方向に間隔をあけて設けられている。   A beam main bar 82 and a shear reinforcement bar 84 are arranged in the reverse beam portion 80 of the reinforced concrete wall 70. The beam main bars 82 are arranged along the beam direction at intervals in the outer peripheral portion of the reverse beam portion 80. The shear reinforcement bars 84 have a substantially rectangular ring shape, are arranged so as to surround the plurality of beam main bars 82, and are provided at intervals in the beam direction.

また、鉄筋コンクリートスラブ４０のスラブ主筋４２の端部４４は、逆梁部８０に延在すると共に側面視Ｌ字状に湾曲されている。つまり、鉄筋コンクリートスラブ４０のスラブ主筋４２は、鉄筋コンクリートスラブ４０と逆梁部８０とに跨って配筋されている。   Moreover, the edge part 44 of the slab main reinforcement 42 of the reinforced concrete slab 40 is extended in the reverse beam part 80, and is curved by the side view L-shape. That is, the slab main bar 42 of the reinforced concrete slab 40 is arranged across the reinforced concrete slab 40 and the reverse beam 80.

鉄筋コンクリート壁７０の増打部９０には、増打主筋９２と増打補強筋９４とが配筋されている。増打主筋９２は、増打部９０の外周部分に間隔をあけて梁方向に沿って配筋されている。   An increased hitting main bar 92 and an increased hitting reinforcing bar 94 are arranged in the increased hitting portion 90 of the reinforced concrete wall 70. The increased striking main bar 92 is arranged along the beam direction with a gap in the outer peripheral portion of the increased hitting portion 90.

増打補強筋９４は、一端部９６Ａ、９６Ａ同士が重ね継ぎ手で連結された第一補強筋９６と第二補強筋９８とで構成されている。   The additional reinforcing bar 94 is composed of a first reinforcing bar 96 and a second reinforcing bar 98 in which one end portions 96A and 96A are connected by a lap joint.

第一補強筋９６は、増打部９０の上部側に配筋された増打主筋９２の上側（外側）に配筋され、梁方向に間隔をあけて設けられている。また、第一補強筋９６の他端部９６Ｂは、逆梁部８０に延出され、更に、スラブ主筋４２の端部４４に重ね継ぎ手で連結されている。   The first reinforcing bars 96 are arranged on the upper side (outer side) of the increased striking main bars 92 arranged on the upper side of the increasing portion 90, and are provided at intervals in the beam direction. The other end portion 96B of the first reinforcing bar 96 extends to the reverse beam portion 80, and is further connected to the end portion 44 of the slab main bar 42 by a lap joint.

一方、第二補強筋９８は、増打部９０の下部側に配筋された増打主筋９２の下側（外側）に配筋され、梁方向に間隔をあけて設けられている。また、第二補強筋９８の他端部９８Ｂは、逆梁部８０に延出され、更に、スラブ主筋４２の端部４４に重ね継ぎ手で連結されている。   On the other hand, the second reinforcing bars 98 are arranged on the lower side (outer side) of the increased striking main bars 92 arranged on the lower side of the increasing portion 90, and are provided at intervals in the beam direction. The other end portion 98B of the second reinforcing bar 98 extends to the reverse beam portion 80, and is further connected to the end portion 44 of the slab main bar 42 by a lap joint.

落下防止壁５０を構成する鉄骨製逆梁６０と増打部９０の下面９０Ａ及び外側面９０Ｂとには、断熱材が吹き付けられ断熱膜５２が形成されている。また、落下防止壁５０を構成する増打部９０の上面９０Ｃ及び内側面９０Ｄには、防水性能を有する塗料が塗布され塗膜５４が形成されている。また、落下防止壁５０を構成する逆梁部８０の内側面８０Ａと鉄筋コンクリートスラブ４０の上面４０Ａとには、防水シート５６が貼られている。   A heat insulating material is sprayed on the steel reverse beam 60 constituting the fall prevention wall 50 and the lower surface 90 </ b> A and the outer surface 90 </ b> B of the additional hitting portion 90 to form a heat insulating film 52. Further, a paint film having a waterproof performance is applied to the upper surface 90 </ b> C and the inner side surface 90 </ b> D of the additional hitting portion 90 constituting the fall prevention wall 50 to form a coating film 54. Further, a waterproof sheet 56 is affixed to the inner side surface 80A of the reverse beam 80 and the upper surface 40A of the reinforced concrete slab 40 constituting the fall prevention wall 50.

落下防止壁５０及び鉄骨柱３０の外側には、構造物１０の外装を構成する外装壁１００が設けられている（図１も参照）。本実施形態では、外装壁１００における側壁部分は気泡コンクリートパネル（ＡＬＣパネル）１１０で構成され、上端部分はガルバニウム鋼板１１２で構成されている。   Outside the fall prevention wall 50 and the steel column 30, an exterior wall 100 that constitutes the exterior of the structure 10 is provided (see also FIG. 1). In this embodiment, the side wall part in the exterior wall 100 is comprised with the cellular concrete panel (ALC panel) 110, and the upper end part is comprised with the galvanium steel plate 112. FIG.

ここで、上述したように本実施形態の落下防止壁５０は、鉄骨製逆梁６０と鉄筋コンクリート壁７０とで構成されている。そして、鉄筋コンクリート壁７０は、鉄骨製逆梁６０をコンクリート型枠の一部として打設されている。言い換えると、鉄筋コンクリート壁７０を打設する際に、鉄骨製逆梁６０をコンクリート型枠として利用している。   Here, as described above, the fall prevention wall 50 of the present embodiment includes the steel reverse beam 60 and the reinforced concrete wall 70. The reinforced concrete wall 70 is provided with the steel reverse beam 60 as a part of the concrete formwork. In other words, when placing the reinforced concrete wall 70, the steel reverse beam 60 is used as a concrete formwork.

また、別の観点から説明すると、鉄骨製逆梁６０は、側面（本実施形態では、ウエブ６２の外側面６２Ａ、上側のフランジ６４の外側部分の下面６４Ａ、下側のフランジ６４の下面６４Ｂ及び外側部分の上面６４Ｄ）が露出するように設けられている。なお、ここで言う「露出」とは、鉄筋コンクリート壁７０（逆梁部８０）に埋設されていないで露出している状態をさす。よって、鉄骨製逆梁６０に断熱膜５２が形成されていたり、外側に外装壁１００が設けられたりしていても「露出」とする。   Further, from another point of view, the steel reverse beam 60 has side surfaces (in this embodiment, the outer surface 62A of the web 62, the lower surface 64A of the outer portion of the upper flange 64, the lower surface 64B of the lower flange 64, and The upper surface 64D) of the outer part is provided so as to be exposed. Here, “exposed” refers to a state in which the exposed portion is not embedded in the reinforced concrete wall 70 (reverse beam portion 80). Therefore, even if the heat insulating film 52 is formed on the steel reverse beam 60 or the exterior wall 100 is provided on the outside, it is regarded as “exposed”.

（作用及び効果）
つぎに、本実施形態の作用及び効果について説明する。 (Function and effect)
Next, functions and effects of the present embodiment will be described.

落下防止壁５０は、鉄骨製逆梁６０と鉄筋コンクリート壁７０の逆梁部８０とで自動車の衝突による衝撃力に耐えうる強度を有する。また、鉄骨製逆梁６０をコンクリート型枠の一部として利用して鉄筋コンクリート壁７０を打設するので、コンクリート型枠を設ける工程の一部とコンクリート型枠を撤去する工程との一部とが削減されるので、作業工数が抑えられる。つまり、落下防止壁５０は、作業工数を抑えつつ、高強度化されている。   The fall prevention wall 50 has a strength capable of withstanding an impact force caused by an automobile collision between the steel reverse beam 60 and the reverse beam portion 80 of the reinforced concrete wall 70. Further, since the steel reinforced reverse beam 60 is used as a part of the concrete formwork and the reinforced concrete wall 70 is placed, there is a part of the process of providing the concrete formwork and part of the process of removing the concrete formwork. Since it is reduced, work man-hours can be reduced. That is, the fall prevention wall 50 is increased in strength while reducing the number of work steps.

また、本実施形態では、増打部９０には、増打主筋９２と増打補強筋９４とが配筋され、増打補強筋９４を構成する第一補強筋９６及び第二補強筋９８は、逆梁部８０に延出されていると共に、スラブ主筋４２の端部４４に重ね継ぎ手で連結されている。よって、増打部９０は逆梁部８０と一体化されていると共に、逆梁部８０と同様に高い強度を有している。   Further, in the present embodiment, the additional hitting portion 90 is provided with an increased hitting main bar 92 and an increased hitting reinforcing bar 94, and the first reinforcing bar 96 and the second reinforcing bar 98 constituting the increased hitting reinforcing bar 94 are In addition, it extends to the reverse beam portion 80 and is connected to the end portion 44 of the slab main bar 42 by a lap joint. Therefore, the increased hitting portion 90 is integrated with the reverse beam portion 80 and has high strength like the reverse beam portion 80.

更に、鉄筋コンクリート壁７０を構成する逆梁部８０及び増打部９０と鉄骨製逆梁６０とを接合するスタッド６３，６５が鉄骨製逆梁６０に設けられている。よって、鉄骨製逆梁６０と逆梁部８０と増打部９０とが一体化されると共に接合強度が向上する。   Further, the reverse beam portion 80 and the additional hitting portion 90 constituting the reinforced concrete wall 70 and studs 63 and 65 for joining the steel reverse beam 60 are provided on the steel reverse beam 60. Therefore, the steel reverse beam 60, the reverse beam portion 80, and the increased hitting portion 90 are integrated and the joint strength is improved.

したがって、本実施形態では、増打部９０及び逆梁部８０で構成された鉄筋コンクリート壁７０と、鉄骨製逆梁６０とで構成された落下防止壁５０全体が、高い強度を有する構造となっている。   Therefore, in the present embodiment, the entire fall prevention wall 50 constituted by the reinforced concrete wall 70 constituted by the increased hitting portion 90 and the reverse beam portion 80 and the steel reverse beam 60 has a structure having high strength. Yes.

＜その他＞
尚、本発明は上記実施形態に限定されない。 <Others>
The present invention is not limited to the above embodiment.

例えば、上記施形態の落下防止壁５０は、一体化された増打部９０と逆梁部８０とで構成された鉄筋コンクリート壁７０と、鉄骨製逆梁６０とで構成されたが、これに限定されない。   For example, the fall prevention wall 50 of the above embodiment is composed of the reinforced concrete wall 70 composed of the integrated striking portion 90 and the reverse beam portion 80 and the steel reverse beam 60, but is not limited thereto. Not.

例えば、逆梁部８０と鉄骨製逆梁６０とで落下防止壁５０が構成されていてもよい（増打部９０が設けられていない構造であってもよい）。また、増打部９０と逆梁部８０とが一体化されてない構成、例えば、第一補強筋９６及び第二補強筋９８が逆梁部８０に延出されてない構成や増打部９０に接合するスタッド６５が鉄骨製逆梁６０に設けられていない構成であってもよい。   For example, the fall prevention wall 50 may be comprised by the reverse beam part 80 and the steel reverse beam 60 (The structure where the additional hit | damage part 90 is not provided may be sufficient). Further, a configuration in which the increased hitting portion 90 and the reverse beam portion 80 are not integrated, for example, a configuration in which the first reinforcing bar 96 and the second reinforcing bar 98 are not extended to the reverse beam portion 80 or the increased hitting portion 90. A structure in which the stud 65 to be joined to the steel reverse beam 60 is not provided.

また、上記実施形態では、鉄骨製逆梁６０と、増打部９０及び逆梁部８０とは、スタッド６３，６５で接合されていたが、これに限定されない。例えば、アングルやコッターなどの他の接合部材を鉄骨製逆梁６０に設けて接合してもよい。或いは、鉄骨製逆梁６０に接合部材が設けられていない構造であってもよい。   Moreover, in the said embodiment, although the steel-made reverse beam 60, the increased hit | damage part 90, and the reverse beam part 80 were joined by the studs 63 and 65, it is not limited to this. For example, another joining member such as an angle or a cotter may be provided on the steel reverse beam 60 for joining. Or the structure in which the joining member is not provided in the steel reverse beam 60 may be sufficient.

また、上記実施形態では、鉄骨製逆梁６０は、Ｈ形鋼で構成されていたが、これに限定されない。Ｈ形鋼以外の鉄骨、例えば、Ｉ形鋼、Ｔ形鋼、Ｚ形鋼、Ｃ形鋼などで構成されていてもよい。   Moreover, in the said embodiment, although the steel-made reverse beam 60 was comprised with the H-section steel, it is not limited to this. You may be comprised with steel frames other than H-section steel, for example, I-section steel, T-section steel, Z-section steel, C-section steel, etc.

また、上記実施形態では、駐車場として使用している屋上１２の落下防止壁５０に本発明を適用したが、これに限定されない。駐車場として使用している屋上以外の階の落下防止壁に本発明を適用してもよい。更に、自動車の落下防止以外の目的の落下防止壁にも本発明を適用することができる。   Moreover, in the said embodiment, although this invention was applied to the fall prevention wall 50 of the rooftop 12 currently used as a parking lot, it is not limited to this. You may apply this invention to the fall prevention wall of floors other than the rooftop used as a parking lot. Furthermore, the present invention can also be applied to a fall prevention wall for purposes other than the fall prevention of automobiles.

また、上記実施形態では、落下防止壁５０は、鉄骨製逆梁６０と、鉄筋コンクリート壁７０を構成する逆梁部８０とで、想定される衝撃力（上記例では自動車の衝突による衝撃力）に耐えうる強度を有するように構造設計がなされていたが、これに限定されない。例えば、鉄骨製逆梁６０だけで想定される衝撃力（上記例では自動車の衝突による衝撃力）に耐えうる強度を有するように構造設計がなされていてもよい。   Moreover, in the said embodiment, the fall prevention wall 50 is made into the impact force (impact force by the collision of a motor vehicle in the said example) assumed with the reverse beam part 60 which comprises the steel frame reverse beam 60, and the reinforced concrete wall 70. Although the structural design has been made so as to withstand the strength, the present invention is not limited to this. For example, the structural design may be made so as to have a strength that can withstand an impact force assumed only by the steel reverse beam 60 (in the above example, an impact force caused by a car collision).

更に、本発明の要旨を逸脱しない範囲において種々なる態様で実施し得ることは言うまでもない。   Furthermore, it cannot be overemphasized that it can implement with a various aspect in the range which does not deviate from the summary of this invention.

４０ 鉄筋コンクリートスラブ（コンクリートスラブの一例）
５０ 落下防止壁
６０ 鉄骨製逆梁
６３ スタッド（接合部の一例）
８０ 逆梁部（鉄筋コンクリート製逆梁の一例） 40 Reinforced concrete slab (an example of concrete slab)
50 Fall prevention wall 60 Steel reverse beam 63 Stud (example of joint)
80 Reverse beam part (an example of a reinforced concrete reverse beam)

Claims (2)

下部にコンクリートスラブが支持される鉄骨製逆梁と、
前記鉄骨製逆梁を型枠の一部として打設され、前記コンクリートスラブから立ち上る鉄筋コンクリート製逆梁と、
を備える落下防止壁。 Steel reverse beam supported by concrete slab at the bottom,
The steel reverse beam is cast as a part of a formwork, the reinforced concrete reverse beam rising from the concrete slab, and
Fall prevention wall with. 前記鉄骨製逆梁には、前記鉄筋コンクリート製逆梁に接合する接合部が設けられている請求項１に記載の落下防止壁。
The fall prevention wall according to claim 1, wherein the steel reverse beam is provided with a joint portion for joining to the reinforced concrete reverse beam.
JP2014078552A 2014-04-07 2014-04-07 Fall prevention wall Expired - Fee Related JP6383557B2 (en)

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JP2019138120A (en) * 2018-02-15 2019-08-22 株式会社竹中工務店 Reinforcement structure of inverse beam

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