JP4771741B2 - Fireproof covering structure of synthetic fireproof beam - Google Patents

Fireproof covering structure of synthetic fireproof beam Download PDF

Info

Publication number
JP4771741B2
JP4771741B2 JP2005154471A JP2005154471A JP4771741B2 JP 4771741 B2 JP4771741 B2 JP 4771741B2 JP 2005154471 A JP2005154471 A JP 2005154471A JP 2005154471 A JP2005154471 A JP 2005154471A JP 4771741 B2 JP4771741 B2 JP 4771741B2
Authority
JP
Japan
Prior art keywords
fireproof
steel beam
upper flange
fireproof covering
flange surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2005154471A
Other languages
Japanese (ja)
Other versions
JP2006328821A (en
Inventor
秀人 斎藤
真一 坂本
寧俊 立石
竜巳 堀江
寿文 大貫
雅彦 常谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nichias Corp
Shimizu Corp
Original Assignee
Nichias Corp
Shimizu Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nichias Corp, Shimizu Corp filed Critical Nichias Corp
Priority to JP2005154471A priority Critical patent/JP4771741B2/en
Publication of JP2006328821A publication Critical patent/JP2006328821A/en
Application granted granted Critical
Publication of JP4771741B2 publication Critical patent/JP4771741B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Building Environments (AREA)

Description

本発明は、建築物や構造物などの施工において設けられる合成耐火梁の耐火被覆構造に関するものである。   The present invention relates to a fireproof covering structure of a synthetic fireproof beam provided in construction of a building or a structure.

従来、Ｈ形断面の鉄骨梁の耐火被覆は、構造物が固定される部分を除き全周且つ全長に渡って耐火被覆材により被覆されていた。例えば、ロックウールの吹付けによる耐火被覆する工法や、ブランケット状の耐火被覆材を通して溶接ピンを鉄骨梁に溶接させて耐火被覆する工法や、鉄骨梁を固定する前に、モルタル，セラミックブランケットまたは耐火塗料により予め鉄骨梁に被覆させた後、施工現場に搬入させるプレコート工法が知られている。
また、Ｈ形断面の鉄骨梁の上フランジ面にデッキプレート状の床が設けられる場合には、鉄骨梁とデッキプレート状の床の位置がずれないように固定し、デッキプレート状の床と接触する部分を除きＨ形断面の鉄骨梁の全面を耐火被覆材により被覆していた（特許文献１を参照）。 Conventionally, the fire-resistant coating of the steel beam having an H-shaped cross section has been covered with the fire-resistant coating material over the entire circumference and the entire length except for the portion where the structure is fixed. For example, a method of fireproof coating by spraying rock wool, a method of fireproof coating by welding a welding pin to a steel beam through a blanket-like fireproof coating material, or before fixing the steel beam, mortar, ceramic blanket or fireproof There is known a pre-coating method in which a steel beam is previously coated with a paint and then carried into a construction site.
In addition, when a deck plate floor is provided on the upper flange surface of an H-shaped steel beam, fix it so that the position of the steel beam and the deck plate floor does not shift and contact the deck plate floor. The entire surface of the steel beam having an H-shaped cross section was covered with a fireproof coating material (see Patent Document 1).

特開２０００−１７７５３号公報JP 2000-17773 A

しかしながら、吹付けによる耐火被覆工法の場合、デッキプレート状の床の下側面に設けられた凹凸状の波形形状と上フランジ面との空隙部へ、吹付け施工用の工具を挿入させることは困難であった。また、ブランケット状の耐火被覆材を溶接ピンにより鉄骨梁に取付ける工法の場合、上フランジ面のエッジ部への溶接ピンは斜めに施工する場合もあり、更に、デッキプレート状の床の下側面に設けられた凹凸状の波形形状と上フランジ面との空隙部へ溶接ピン施工用の工具を空隙部に挿入させることは困難であった。このため該空隙部への耐火被覆施工は、吹付けによる耐火被覆工法及び溶接ピンによるブランケット状の耐火被覆材を施工する工法のいずれの場合にも、前記空隙部には耐火性材料からなるふさぎ材を詰めていた。すなわち、図１に示すように、鉄骨梁５０の上フランジ面５２とデッキプレート６０との空隙部にふさぎ材５９を詰めるのである。   However, in the case of a fireproof coating method by spraying, it is difficult to insert a tool for spraying into the gap between the corrugated shape on the lower surface of the deck plate floor and the upper flange surface. Met. In addition, in the case of a method of attaching a blanket-like fireproof covering material to a steel beam with a welding pin, the welding pin on the edge of the upper flange surface may be constructed diagonally, and further on the lower side of the deck plate-like floor It was difficult to insert a welding pin construction tool into the gap between the provided uneven corrugated shape and the upper flange surface. For this reason, in the case of any of the fireproof coating method by spraying and the blanket-like fireproof coating material by welding pins, the fireproof coating is applied to the gap portion. Packed with timber. That is, as shown in FIG. 1, the sealing material 59 is packed in the gap between the upper flange surface 52 of the steel beam 50 and the deck plate 60.

本発明は、このような問題点を解決するためになされたものであり、建築基準法に準じた耐火被覆構造であって、且つ現場での施工作業を改善すると共に、耐火被覆材を削減してコストダウンを図ることを目的としている。   The present invention has been made in order to solve such problems, and has a fireproof coating structure conforming to the Building Standard Law, and improves construction work on site and reduces the fireproof coating material. The purpose is to reduce costs.

上記の目的を達成するために、第一の発明は、両端が支持されるＨ形断面の鉄骨梁の上フランジ面に、下側面が凹凸の波形形状を交互に繰り返すデッキプレート状の床からなる構造物がその接触部分で連結具により剛接合されてなる合成耐火梁において、構造物の凹凸面に直交するように鉄骨梁が長手方向に延びていると共に、鉄骨梁の上フランジ面と構造物との空隙部にふさぎ材を設けずに、該構造物が取り付く鉄骨梁の上フランジ面を露出したまま全て耐火被覆材で被覆されていることを特徴とする合成耐火梁の耐火被覆構造である。
第二の発明は、第一の発明の合成耐火梁の耐火被覆構造において、構造物の凹凸面に直交するように長手方向に延びている鉄骨梁に代えて、構造物の凹凸面に平行するように鉄骨梁が長手方向に延びていると共に、鉄骨梁の上フランジ面を露出したまま全て耐火被覆材で被覆されていることを特徴とする合成耐火梁の耐火被覆構造である。
第三の発明は、前記上フランジ面と上フランジのエッジ面を残して全て耐火被覆材で被覆されると共に、前記耐火被覆材がブランケット状であって溶接ピンにより鉄骨梁に固定され、該溶接ピンが鉄骨梁の溶接面に略垂直に取付けられることを特徴とする第一の発明又は第二の発明の合成耐火梁の耐火被覆構造である。 In order to achieve the above object, the first invention comprises a deck plate-like floor in which an upper flange surface of an H-shaped cross-section steel beam supported at both ends and a corrugated shape having an uneven bottom surface are alternately repeated. In a composite refractory beam in which the structure is rigidly joined by a connector at its contact portion, the steel beam extends in the longitudinal direction so as to be orthogonal to the uneven surface of the structure, and the upper flange surface of the steel beam and the structure A fireproof covering structure for a composite fireproof beam characterized in that the upper flange surface of the steel beam to which the structure is attached is exposed and covered with a fireproof covering material without providing a blocking material in the gap with .
According to a second invention, in the fireproof covering structure of the composite fireproof beam according to the first invention, instead of the steel beam extending in the longitudinal direction so as to be orthogonal to the uneven surface of the structure, it is parallel to the uneven surface of the structure. As described above, the steel beam extends in the longitudinal direction and is covered with a fireproof coating material with the upper flange surface of the steel beam being exposed.
According to a third aspect of the present invention, the upper flange surface and the edge surface of the upper flange are all covered with a fire-resistant coating material, and the fire-resistant coating material is in a blanket shape and is fixed to a steel beam by a welding pin. It is the fireproof covering structure of the composite fireproof beam according to the first invention or the second invention, characterized in that the pin is attached substantially perpendicularly to the welding surface of the steel beam.

本発明によれば、以下のような効果を有する。
（１） 鉄骨梁の上フランジ面と構造物との空隙部に対して施工作業を不要としたり、また、上フランジ面のエッジ部に対して溶接ピンを斜めに施工する施工作業を不要とすることができるので、現場での施工作業の改善が図られる。
（２） 合成耐火梁を上フランジ面と上フランジのエッジ面を残して全て耐火被覆材で被覆することで、耐火性を維持しながらも耐火被覆材の削減によるコストダウンが図られる。 The present invention has the following effects.
(1) No construction work is required for the gap between the upper flange surface of the steel beam and the structure, and no construction work is required for constructing the welding pin diagonally to the edge of the upper flange surface. Therefore, construction work on site can be improved.
(2) By covering the composite fire-resistant beam with the fire-resistant coating material except for the upper flange surface and the edge surface of the upper flange, the cost can be reduced by reducing the fire-resistant coating material while maintaining the fire resistance.

本発明の実施形態を図面に基づいて説明する。
図２は、本発明の第一実施形態を示す説明図であり、Ｈ形断面の鉄骨梁の長手方向断面図である。
本発明の合成耐火梁１０は、両端が支持されるＨ形断面の鉄骨梁２０と、その鉄骨梁２０の上フランジ面２２に剛接合される床３０とからなっている。床３０は、下面側が凹凸の波形形状を交互に繰り返すデッキプレート３９を備える。第一実施形態では、このデッキプレート３９の凹凸面に直交するように鉄骨梁２０が長手方向に延びている。そして、そのデッキプレート３９の上部には、コンクリート３８が打設され、床３０を形成する。なお、デッキプレート３９の形状は図示のものに限定されず、凹凸を繰り返す波形形状のものであればよい。 Embodiments of the present invention will be described with reference to the drawings.
FIG. 2 is an explanatory view showing the first embodiment of the present invention, and is a longitudinal sectional view of a steel beam having an H-shaped cross section.
The composite refractory beam 10 of the present invention includes an H-shaped cross-section steel beam 20 supported at both ends, and a floor 30 rigidly joined to the upper flange surface 22 of the steel beam 20. The floor 30 is provided with a deck plate 39 that alternately repeats a corrugated shape with an uneven bottom surface. In the first embodiment, the steel beam 20 extends in the longitudinal direction so as to be orthogonal to the uneven surface of the deck plate 39. Then, concrete 38 is placed on the top of the deck plate 39 to form a floor 30. Note that the shape of the deck plate 39 is not limited to that shown in the drawing, and may be any waveform shape that repeats unevenness.

上方から見てデッキプレート３９の窪んでいる凹部３１が、鉄骨梁２０の上部フランジ面２２と当接している。そして、この当接部分にスタットボルト４５を設けて、床３０と鉄骨梁２０とを剛接合し、一体化した合成耐火梁１０を構成する。スタッドボルト４５の数については特に限定はないが、例えば、各凹部３１ごとに設けてもよいし、各凹部３１に１つおきに設けてもよい。図１では、各凹部３１ごとに設けた例を図示している。なお、スタッドボルト４５は、連結具としての一例であり、これに限定されるものではない。   The recessed portion 31 in which the deck plate 39 is recessed as viewed from above contacts the upper flange surface 22 of the steel beam 20. And the stat bolt 45 is provided in this contact part, the floor 30 and the steel beam 20 are rigidly joined, and the synthetic fireproof beam 10 integrated is comprised. The number of stud bolts 45 is not particularly limited. For example, the stud bolts 45 may be provided for each recess 31 or may be provided every other recess 31. In FIG. 1, the example provided for each recessed part 31 is shown in figure. In addition, the stud bolt 45 is an example as a connection tool, and is not limited to this.

また、上方から見てデッキプレート３９の突起している凸部３４と、鉄骨梁２０の上部フランジ面２２との間に形成される空隙部２８には、ふさぎ材を設けていない。火災発生時に空隙部２８内の温度が上昇しても、熱分布は符号２９の範囲にとどまり、鉄骨梁２０と床３０の剛接合されている部分にまで及ばない。このため、合成耐火梁１０の一体性を損なわずに、ふさぎ材がなくとも従来の梁構造よりも耐力性に優れたものとなる。また、従来の合成耐火梁に対しても同等レベルの耐力性を持つ。また、施工時にふさぎ材を空隙部２８に詰め込む作業工程がなくなり、作業性が著しく向上する。   In addition, no blocking material is provided in the gap portion 28 formed between the protruding portion 34 of the deck plate 39 as viewed from above and the upper flange surface 22 of the steel beam 20. Even if the temperature in the gap 28 rises when a fire occurs, the heat distribution stays within the range of 29, and does not reach the portion where the steel beam 20 and the floor 30 are rigidly joined. For this reason, the integrity of the composite refractory beam 10 is not impaired, and even if there is no cover material, the proof strength is superior to the conventional beam structure. It also has the same level of proof strength as conventional synthetic fire beams. Further, there is no work process for filling the gap material 28 into the gap 28 during construction, and workability is remarkably improved.

図３は、第一実施形態のその他の説明図であり、図２のＡ−Ａ線断面図にあって鉄骨梁２０を耐火被覆したものである。
鉄骨梁２０は、デッキプレート３９に当接する上部フランジ面２２と上部フランジ２１のエッジ部２３，２３とを残して耐火被覆材２５で耐火被覆されている。このように、鉄骨梁２０の表面を一部省略して（露出したまま）耐火被覆した場合でも、スタッドボルト４５によって鉄骨梁２０と床３０とが一体化された合成耐火梁１０を構成しているので、座屈せずに火災時の荷重を十分支えることができる。また、鉄骨梁２０の耐火被覆作業において、作業の困難な上部フランジ２１のエッジ部２３，２３の被覆作業がなくなるので、作業性を向上できる。なお、符号２６は耐火被覆材２５を鉄骨梁２０に貼り付けるための溶接ピンである。この溶接ピン２６は、鉄骨梁１０の溶接面に対して略垂直に取付けられるので作業性を向上できる。ここで、耐火被覆材２５はブランケット状のものの他に、湿式，半湿式などその種類・材質を問わずあらゆる耐火被覆材がこれに含まれる。次の第二実施形態においても同様である。 FIG. 3 is another explanatory view of the first embodiment, which is a cross-sectional view taken along the line AA of FIG.
The steel beam 20 is fire-coated with a fire-resistant covering material 25 except for the upper flange surface 22 that contacts the deck plate 39 and the edge portions 23 and 23 of the upper flange 21. Thus, even when the surface of the steel beam 20 is partially omitted (exposed) and fireproof coated, the composite fireproof beam 10 in which the steel beam 20 and the floor 30 are integrated by the stud bolt 45 is configured. Therefore, it can fully support the load during a fire without buckling. Moreover, in the fireproof covering work of the steel beam 20, since the covering work of the edge portions 23 and 23 of the upper flange 21 which is difficult to work is eliminated, workability can be improved. Reference numeral 26 denotes a welding pin for attaching the fireproof covering material 25 to the steel beam 20. Since this welding pin 26 is attached substantially perpendicular to the welding surface of the steel beam 10, workability can be improved. Here, the refractory coating material 25 includes all refractory coating materials, regardless of the type and material, such as wet and semi-wet, in addition to the blanket-like material. The same applies to the following second embodiment.

図４は、本発明の第二実施形態を示す説明図であり、Ｈ形断面の鉄骨梁の短手方向断面図である。
第二実施形態が第一実施形態と異なるのは、デッキプレート３９の凹凸面と平行するように鉄骨梁２０が長手方向に延びている点である。すなわち、デッキプレート３９の上から見た凹部３１が、鉄骨梁２０の上部フランジ面２２と当接している。そして、この当接部分にスタットボルト４５を設けて、鉄骨梁２０と床３０とを剛接合し、一体化した合成耐火梁１５を構成する。スタッドボルト４５の数については特に限定はないが、例えば、デッキプレート３９の凹部３１長手方向に２００ｍｍ〜４００ｍｍのピッチでスタッドボルト４５を設けるようにしてもよい。 FIG. 4 is an explanatory view showing a second embodiment of the present invention, and is a cross-sectional view in the short-side direction of a steel beam having an H-shaped cross section.
The second embodiment is different from the first embodiment in that the steel beam 20 extends in the longitudinal direction so as to be parallel to the uneven surface of the deck plate 39. That is, the concave portion 31 viewed from above the deck plate 39 is in contact with the upper flange surface 22 of the steel beam 20. And the stat bolt 45 is provided in this contact part, the steel beam 20 and the floor 30 are rigidly joined, and the synthetic | combination fireproof beam 15 integrated is comprised. The number of stud bolts 45 is not particularly limited. For example, the stud bolts 45 may be provided at a pitch of 200 mm to 400 mm in the longitudinal direction of the recess 31 of the deck plate 39.

鉄骨梁２０は、第一実施形態と同様に、デッキプレート３９に当接する上部フランジ面２２と上部フランジ２１のエッジ部２３，２３とを残して耐火被覆材２５で耐火被覆されている。このように、鉄骨梁２０の表面を一部省略して（露出したまま）耐火被覆した場合でも、スタッドボルト４５によって鉄骨梁２０と床３０とが一体化された合成耐火梁１５を構成しているので、座屈せずに火災時の荷重を十分支えることができる。また、鉄骨梁２０の耐火被覆作業において、作業の困難な上部フランジ２２のエッジ部２３，２３の被覆作業がなくなるので、作業性を向上できる。さらに、符号２６は耐火被覆材２５を鉄骨梁２０に貼り付けるための溶接ピンである。この溶接ピン２６は、鉄骨梁１０の溶接面に対して略垂直に取付けられるので作業性を向上できる。   As in the first embodiment, the steel beam 20 is fire-coated with the fire-resistant coating material 25 except for the upper flange surface 22 that contacts the deck plate 39 and the edge portions 23 and 23 of the upper flange 21. Thus, even when the surface of the steel beam 20 is partially omitted (while exposed) and covered with fireproof, the composite fireproof beam 15 in which the steel beam 20 and the floor 30 are integrated by the stud bolt 45 is configured. Therefore, it can fully support the load during a fire without buckling. Further, in the fireproof covering work of the steel beam 20, the work of covering the edge portions 23, 23 of the upper flange 22 which is difficult to work is eliminated, so that workability can be improved. Further, reference numeral 26 denotes a welding pin for attaching the fireproof covering material 25 to the steel beam 20. Since this welding pin 26 is attached substantially perpendicular to the welding surface of the steel beam 10, workability can be improved.

次に、本発明の性能を実施例と比較例に基づいて説明する。
［試験体仕様］
・共通事項
加熱温度：ISO834に準拠
鉄骨：Ｈ-400×400×8×13
支持点間隔：4200mm
被覆材：商品名マキベエ（製造元ニチアス株式会社）20mm、上フランジの小口 露出
・床板部分の違い
実施例（本発明）：デッキプレート＋コンクリートが、スタッドボルトにより、 鉄骨に接合されている
比較例（従来例）：ＡＬＣ100mmを載せただけ（落ちないように固定している が長さを500mm程度に分割し鉄骨が曲がるときの抵抗にな らないようにしている）
［合格基準値］
・たわみ量、たわみ速度が下記を越えないこと。
最大たわみ量(mm)：Ｌ/400ｄ2＝110mm
最大たわみ速度(mm/min)：Ｌ/9000ｄ2＝4.9mm/min
Ｌ：支点間距離(mm)
ｄ：梁高さ(mm)
［加熱温度と加熱時間］
・加熱温度：ISO834に規定されている加熱温度：Ｔ＝345log10(8t+1)+20
・加熱時間：１時間（建築基準法施行令第107条に規定されている梁耐火１時間) Next, the performance of the present invention will be described based on examples and comparative examples.
[Specimen specifications]
・ Common items Heating temperature: Conforms to ISO834 Steel frame: H-400 × 400 × 8 × 13
Support point interval: 4200mm
Covering material: Brand name Makibee (Manufacturer Nichias Co., Ltd.) 20mm, fore edge of upper flange Exposed ・ Difference in floor plate part Example (invention): Deck plate + concrete is joined to steel frame by stud bolt Comparative example ( Conventional example): ALC100mm is only placed (it is fixed so that it does not fall, but the length is divided into about 500mm to prevent resistance when the steel frame is bent).
[Acceptance standard value]
-The amount of deflection and the deflection speed should not exceed the following.
Maximum deflection (mm): L / 400d 2 = 110mm
Maximum deflection speed (mm / min): L / 9000d 2 = 4.9 mm / min
L: Distance between fulcrums (mm)
d: Beam height (mm)
[Heating temperature and heating time]
・ Heating temperature: Heating temperature specified in ISO834: T = 345log 10 (8t + 1) +20
・ Heating time: 1 hour (1 hour beam fire resistance specified in Article 107 of the Building Standards Law Enforcement Ordinance)

上記のような試験の結果は、以下の通りである（図５および図６を参照のこと）。
（１）比較例（従来例）の場合、58分でたわみ速度が規定値を超え、耐火１時間に不合格となった。
（２）実施例（本発明）の場合、92分でたわみ速度が規定値を超え、耐火１時間に合格した。 The results of the test as described above are as follows (see FIGS. 5 and 6).
(1) In the case of the comparative example (conventional example), the deflection speed exceeded the specified value in 58 minutes, and the fire resistance was rejected in 1 hour.
(2) In the case of the example (the present invention), the deflection rate exceeded the specified value in 92 minutes, and passed the fire resistance for 1 hour.

本発明は、建築物や構造物などの施工において設けられる合成耐火梁の耐火被覆構造に広く利用できるものである。   INDUSTRIAL APPLICABILITY The present invention can be widely used for a fireproof covering structure of a synthetic fireproof beam provided in construction of a building or a structure.

合成耐火梁の従来例を示す説明図。Explanatory drawing which shows the conventional example of a synthetic fireproof beam. 本発明の第一実施形態を示す説明図。Explanatory drawing which shows 1st embodiment of this invention. 本発明の第一実施形態を示すその他の説明図。The other explanatory view showing the first embodiment of the present invention. 本発明の第二実施形態を示す説明図。Explanatory drawing which shows 2nd embodiment of this invention. 実施例（合成梁）および比較例（従来例）のたわみ量を示すグラフ。The graph which shows the deflection amount of an Example (composite beam) and a comparative example (conventional example). 実施例（合成梁）および比較例（従来例）のたわみ速度を示すグラフ。The graph which shows the bending speed of an Example (composite beam) and a comparative example (conventional example).

符号の説明Explanation of symbols

１０ 合成耐火梁 １５ 合成耐火梁
２０ 鉄骨梁 ２１ 上部フランジ ２２ 上部フランジ面
２３ エッジ部 ２５ 耐火被覆材 ２６ 溶接ピン
２８ 空隙部 ２９ 熱分布
３０ 床 ３１ 凹部 ３４ 凸部
３８ コンクリート ３９ デッキプレート
４５ スタッドボルト
５０ 鉄骨梁 ５２ 上部フランジ面 ５９ ふさぎ材
６０ デッキプレート DESCRIPTION OF SYMBOLS 10 Composite fire beam 15 Composite fire beam 20 Steel beam 21 Upper flange 22 Upper flange surface 23 Edge part 25 Fireproof covering material 26 Welding pin 28 Air gap part 29 Heat distribution 30 Floor 31 Concave part 34 Protrusion part 38 Concrete 39 Deck plate 45 Stud bolt 50 Steel beam 52 Upper flange surface 59 Cover material 60 Deck plate

Claims (3)

両端が支持されるＨ形断面の鉄骨梁の上フランジ面に、下側面が凹凸の波形形状を交互に繰り返すデッキプレート状の床からなる構造物がその接触部分で連結具により剛接合されてなる合成耐火梁において、構造物の凹凸面に直交するように鉄骨梁が長手方向に延びていると共に、鉄骨梁の上フランジ面と構造物との空隙部にふさぎ材を設けずに、該構造物が取り付く鉄骨梁の上フランジ面を露出したまま全て耐火被覆材で被覆されていることを特徴とする合成耐火梁の耐火被覆構造。 A structure composed of a deck plate-like floor in which a corrugated shape with an uneven bottom surface is alternately joined to an upper flange surface of an H-shaped cross-section steel beam supported at both ends by a joint at its contact portion. In a composite refractory beam, the steel beam extends in the longitudinal direction so as to be orthogonal to the uneven surface of the structure, and the structure is formed without providing a blocking material in the gap between the upper flange surface of the steel beam and the structure. A fireproof covering structure for a composite fireproof beam, in which the upper flange surface of the steel beam to which is attached is completely covered with a fireproof covering material. 請求項１記載の合成耐火梁の耐火被覆構造において、構造物の凹凸面に直交するように長手方向に延びている鉄骨梁に代えて、構造物の凹凸面に平行するように鉄骨梁が長手方向に延びていると共に、鉄骨梁の上フランジ面を露出したまま全て耐火被覆材で被覆されていることを特徴とする合成耐火梁の耐火被覆構造。  2. The fireproof covering structure of a composite fireproof beam according to claim 1, wherein the steel beam is elongated in parallel with the uneven surface of the structure, instead of the steel beam extending in the longitudinal direction so as to be orthogonal to the uneven surface of the structure. A fireproof covering structure for a synthetic fireproof beam that extends in the direction and is entirely covered with a fireproof covering material with the upper flange surface of the steel beam exposed. 前記上フランジ面と上フランジのエッジ面を残して全て耐火被覆材で被覆されると共に、前記耐火被覆材がブランケット状であって溶接ピンにより鉄骨梁に固定され、該溶接ピンが鉄骨梁の溶接面に略垂直に取付けられることを特徴とした請求項１又は２記載の合成耐火梁の耐火被覆構造。   The upper flange surface and the edge surface of the upper flange are all covered with a fire-resistant coating material, and the fire-resistant coating material is blanket-like and fixed to the steel beam with a welding pin, and the welding pin is welded to the steel beam. The fireproof covering structure for a synthetic fireproof beam according to claim 1 or 2, wherein the fireproof covering structure is attached substantially perpendicularly to the surface.
JP2005154471A 2005-05-26 2005-05-26 Fireproof covering structure of synthetic fireproof beam Active JP4771741B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005154471A JP4771741B2 (en) 2005-05-26 2005-05-26 Fireproof covering structure of synthetic fireproof beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005154471A JP4771741B2 (en) 2005-05-26 2005-05-26 Fireproof covering structure of synthetic fireproof beam

Publications (2)

Publication Number Publication Date
JP2006328821A JP2006328821A (en) 2006-12-07
JP4771741B2 true JP4771741B2 (en) 2011-09-14

Family

ID=37550787

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005154471A Active JP4771741B2 (en) 2005-05-26 2005-05-26 Fireproof covering structure of synthetic fireproof beam

Country Status (1)

Country Link
JP (1) JP4771741B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5885911B2 (en) * 2010-06-29 2016-03-16 株式会社竹中工務店 Design method of steel beam with reinforced concrete slab

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05331943A (en) * 1992-05-30 1993-12-14 Maeda Corp Joining method of beam and girder in rc rigio frame
JP3348548B2 (en) * 1994-11-25 2002-11-20 日本鋼管株式会社 Refractory beam

Also Published As

Publication number Publication date
JP2006328821A (en) 2006-12-07

Similar Documents

Publication Publication Date Title
JP4078367B2 (en) Cable-stayed cable fixing structure
US20070000197A1 (en) Structural decking system
JP4771741B2 (en) Fireproof covering structure of synthetic fireproof beam
JP4335828B2 (en) Fireproof test body structure and fireproof test method
JP2010018971A (en) Fire resistant covering structure of steel column
WO2023022099A1 (en) Steel-and-wood hybrid beam material and beam material t-shaped steel piece
JP4264461B2 (en) Floor structure
KR20180001181A (en) Brick wall support apparatus and construction method of brick wall using the same
JP6978212B2 (en) Deck plate
JPH0622017Y2 (en) Architectural panel
JP2009275470A (en) Base plate for column base
WO2020189385A1 (en) Roof structure
JP6353591B1 (en) Synthetic floor slab
JP6838872B2 (en) Sandwich panel mounting structure
KR200285919Y1 (en) Natural Stone Panel
JP3703430B2 (en) Structural panel and wall structure
WO2018038057A1 (en) Steel member
JP2022118504A (en) Steel beam fire resistive covering structure
JP7494423B2 (en) Wooden column-beam joint structure
JP7519016B2 (en) Scaffolding mounting bracket
JP7391912B2 (en) Structural members for vehicles and method for welding reinforcing materials to structural members for vehicles
JP6063807B2 (en) Welding method
JP7228455B2 (en) Fireproof covering structure
JP6389555B2 (en) Thermal insulation panel
JPH0732675Y2 (en) Fireproof coating structure such as slabs and beams

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080512

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20101210

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110125

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110325

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20110531

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110621

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140701

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4771741

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140701

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140701

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140701

Year of fee payment: 3

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140701

Year of fee payment: 3

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250