JP2016211234A - Vertical net pre-installation method - Google Patents

Vertical net pre-installation method Download PDF

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JP2016211234A
JP2016211234A JP2015096149A JP2015096149A JP2016211234A JP 2016211234 A JP2016211234 A JP 2016211234A JP 2015096149 A JP2015096149 A JP 2015096149A JP 2015096149 A JP2015096149 A JP 2015096149A JP 2016211234 A JP2016211234 A JP 2016211234A
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vertical net
vertical
steel
steel column
installation
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佐藤 貴洋
Takahiro Sato
貴洋 佐藤
河村 亮
Akira Kawamura
亮 河村
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大成建設株式会社
Taisei Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a vertical net pre-installation method for installing a vertical net before installing a steel frame beam.SOLUTION: A vertical net pre-installation method comprises a process of installing a vertical net installation tool having a fixing part of projecting from the outer periphery of a steel frame column, in an apex part of the steel frame column, a process of building up the steel frame column so that the fixing part becomes the outside, a process of installing respective both ends of a rod member for fixing the vertical net in the fixing part of the adjacent steel frame column, a process of installing a steel frame beam on the inside of the vertical net and a process of removing the rod member and the vertical net installation tool from the steel frame column after replacing the vertical net with a wire from the rod member by installing the wire on the steel frame column.SELECTED DRAWING: Figure 3

Description

本発明は、垂直ネット先行設置工法に関する。   The present invention relates to a vertical net advance installation method.
建設現場において、ボルト、工具等の敷地外への落下防止のために建築物の外側構面に垂直ネットが設置されることがある。垂直ネットは鉄骨柱間に張った被覆ワイヤーに取り付けられるが、鉄骨梁が取り付けられていないと隣接する鉄骨柱間に被覆ワイヤーを架け渡すことが困難であり、また、鉄骨梁架設作業の障害になるおそれがあるため、垂直ネットは鉄骨梁を架設した後に設置されることが多い。鉄骨建方作業において、外周部の鉄骨梁を取り付ける際には垂直ネットが設置されていないため、ボルトや工具が落下すると、建設敷地内のみならず、外部に落下することがあり、工事関係者だけでなく、歩行者や通行車両等の第三者にとっても危険であった。   In a construction site, a vertical net may be installed on the outer surface of a building in order to prevent bolts, tools, etc. from falling outside the site. The vertical net is attached to the covered wire stretched between the steel columns. However, if the steel beam is not attached, it is difficult to bridge the covered wire between the adjacent steel columns, and it also obstructs the work of installing the steel beam. Therefore, the vertical net is often installed after the steel beam is installed. In steel construction work, when installing steel beams on the outer periphery, vertical nets are not installed, so if bolts or tools fall, they may fall not only inside the construction site but also outside, and construction personnel Not only was it dangerous for third parties such as pedestrians and traffic vehicles.
特許文献1には、建て込まれた躯体外周部の鉄骨柱間に梁を横架する際における、躯体外部への飛来落下物に対する養生を行う養生ユニットであって、少なくとも建て込まれた2本の鉄骨柱間を覆うだけの広さを有する養生ネットと、その養生ネットを広げた状態で保持する枠体と、枠体の上部から鉄骨柱側に向けて張り出す少なくとも2本のブラケットと、各ブラケットの先端部に設けられて、上記鉄骨柱の上部の柱側掛止部に上側から掛止可能な養生側掛止部と、を備えたことを特徴とする鉄骨梁建方時の養生ユニットが提案されている。
特許文献1に記載の養生ユニットは、鉄骨梁の架設前に鉄骨柱に取り付けられるものであるが、少なくとも2本の鉄骨柱間を覆う幅と少なくとも1階分の高さを有する養生ユニットを地上で組み立てる必要があり、大きな作業スペースが必要である。
Patent Document 1 discloses a curing unit for curing a fallen object to the outside of a frame when a beam is horizontally placed between steel columns on the outer periphery of the built frame, and at least two built-in units. A curing net having a size sufficient to cover between the steel columns, a frame body that holds the curing net in an expanded state, and at least two brackets that project from the top of the frame toward the steel column side, A curing unit at the time of building a steel beam, comprising a curing side latching portion provided at a tip end portion of each bracket and capable of being latched on the column side latching portion on the upper side of the steel column from above. Proposed.
The curing unit described in Patent Document 1 is attached to the steel column before the construction of the steel beam. However, the curing unit having a width covering at least two steel columns and a height of at least one floor is grounded. It needs to be assembled with a large work space.
特開2002−21336号公報JP 2002-21336 A
本発明は、鉄骨梁を取り付ける前に垂直ネットを設置する垂直ネット先行設置工法を提供する。   The present invention provides a vertical net advance installation method in which a vertical net is installed before a steel beam is attached.
1.鉄骨柱の頂部に、該鉄骨柱の外周から突出する固定部を有する垂直ネット設置治具を取り付ける工程、
前記鉄骨柱を、前記固定部が外側となるように建て込む工程、
垂直ネットが固定された棒部材の両端それぞれを、隣接する前記鉄骨柱の前記固定部に取り付ける工程、
前記垂直ネットの内部で、鉄骨梁を架設する工程、
前記鉄骨柱にワイヤーを取り付け、前記垂直ネットを前記棒部材から前記ワイヤーに付け替えた後に、前記棒部材と前記垂直ネット設置治具とを前記鉄骨柱から取り外す工程、
を有することを特徴とする、垂直ネット先行設置工法。
1. Attaching a vertical net installation jig having a fixing portion protruding from the outer periphery of the steel column to the top of the steel column;
Building the steel column so that the fixed portion is on the outside;
Attaching both ends of the bar member to which the vertical net is fixed to the fixing portion of the adjacent steel column;
Laying a steel beam inside the vertical net;
A step of attaching a wire to the steel column and removing the bar member and the vertical net installation jig from the steel column after changing the vertical net from the rod member to the wire.
A vertical net advance installation method characterized by comprising:
本発明の垂直ネット先行設置工法により、鉄骨柱に鉄骨梁を架設する前に、垂直ネットを設置することができる。垂直ネットを設置した後に鉄骨梁を架設するため、鉄骨梁架設時にボルトや工具が落下しても、建設敷地外の歩行者や通行車両の上に落下することはない。鉄骨柱の頂部への垂直ネット設置治具の取り付け、棒部材への垂直ネットの固定は、地上で行うことができ、高所での作業が少ないため、施工性、安全性に優れている。棒部材への垂直ネットの取り付けは、狭いスペースで行うことができる。   The vertical net can be installed before the steel beam is installed on the steel column by the vertical net advance installation method of the present invention. Since the steel beam is installed after the vertical net is installed, even if bolts or tools fall during the installation of the steel beam, it will not fall on pedestrians or traffic vehicles outside the construction site. The installation of the vertical net installation jig to the top of the steel column and the fixing of the vertical net to the bar member can be performed on the ground, and work at high places is less, so it is excellent in workability and safety. The vertical net can be attached to the bar member in a narrow space.
垂直ネット設置治具を示す図。The figure which shows a perpendicular | vertical net installation jig | tool. 本発明の垂直ネット先行設置工法の工程を説明する図。The figure explaining the process of the perpendicular | vertical net precedence installation construction method of this invention. 鉄骨柱頂部に取り付けられた垂直ネット設置治具を示す図。The figure which shows the perpendicular | vertical net installation jig | tool attached to the steel-frame pillar top part. 本発明の垂直ネット先行設置工法の工程を説明する図。The figure explaining the process of the perpendicular | vertical net precedence installation construction method of this invention. 本発明の垂直ネット先行設置工法の工程を説明する図。The figure explaining the process of the perpendicular | vertical net precedence installation construction method of this invention. 本発明の垂直ネット先行設置工法の工程を説明する図。The figure explaining the process of the perpendicular | vertical net precedence installation construction method of this invention. 本発明の垂直ネット先行設置工法の工程を説明する図。The figure explaining the process of the perpendicular | vertical net precedence installation construction method of this invention.
本発明は、建方した鉄骨柱に鉄骨梁を架設する前に垂直ネットを設置する垂直ネット設置後方に関する。具体的には、
鉄骨柱の頂部に、該鉄骨柱の外周から突出する固定部を有する垂直ネット設置治具を取り付ける工程、
前記鉄骨柱を、前記固定部が外側となるように建て込む工程、
垂直ネットが固定された棒部材の両端それぞれを、隣接する前記鉄骨柱の前記固定部に取り付ける工程、
前記垂直ネットの内部で、鉄骨梁を架設する工程、
前記鉄骨柱にワイヤーを取り付け、前記垂直ネットを前記棒部材から前記ワイヤーに付け替えた後に、前記棒部材と前記垂直ネット設置治具とを前記鉄骨柱から取り外す工程、
を有する垂直ネット先行設置工法に関する。
The present invention relates to a vertical net installation rear in which a vertical net is installed before a steel beam is installed on a built steel column. In particular,
Attaching a vertical net installation jig having a fixing portion protruding from the outer periphery of the steel column to the top of the steel column;
Building the steel column so that the fixed portion is on the outside;
Attaching both ends of the bar member to which the vertical net is fixed to the fixing portion of the adjacent steel column;
Laying a steel beam inside the vertical net;
A step of attaching a wire to the steel column and removing the bar member and the vertical net installation jig from the steel column after changing the vertical net from the rod member to the wire.
It relates to a vertical net advance installation method.
図1に垂直ネット設置治具1を示す。垂直ネット設置治具1は、水平材11と、水平材11の一端に取り付けられた第一の垂直材12と、第一の垂直材から鉄骨柱の径と略等しい距離となる位置に取り付けられた第二の垂直材13と、水平材11の他端に設けられた固定部14とを有する。   FIG. 1 shows a vertical net installation jig 1. The vertical net installation jig 1 is attached to a horizontal member 11, a first vertical member 12 attached to one end of the horizontal member 11, and a position that is substantially equal to the diameter of the steel column from the first vertical member. A second vertical member 13 and a fixing portion 14 provided at the other end of the horizontal member 11.
水平材11と第一の垂直材12とは、溶接により接合されている。水平材と第二の垂直材13とは、水平材11に設けられた長穴を通るボルトで接合されており、鉄骨柱の径に応じて第二の垂直材13の位置を調整することができる。水平材11と第二の垂直材13とを接合するボルトは、落下防止のためにワイヤーで接続されている。   The horizontal member 11 and the first vertical member 12 are joined by welding. The horizontal member and the second vertical member 13 are joined by a bolt that passes through a long hole provided in the horizontal member 11, and the position of the second vertical member 13 can be adjusted according to the diameter of the steel column. it can. The bolt that joins the horizontal member 11 and the second vertical member 13 is connected by a wire to prevent falling.
水平材11の一端には、垂直ネット設置治具1の落下防止のために、鉄骨柱のフックに係合されるワイヤー15が取り付けられている。第一の垂直材12、および第二の垂直材13にはボルト穴が設けられており、第一、および第二の垂直材12、13の先端には落下防止用のワイヤーを介して板材が係合され、この板材にワッシャーとボルト16とが溶接されている。固定部14は水平材11の他端にボルトとナットにより固定され、また、落下防止のためにこのボルトはネジ山溶接されている。   A wire 15 that is engaged with a hook of a steel column is attached to one end of the horizontal member 11 to prevent the vertical net installation jig 1 from falling. Bolt holes are provided in the first vertical member 12 and the second vertical member 13, and a plate material is provided at the tips of the first and second vertical members 12 and 13 via a wire for preventing fall. The washer and the bolt 16 are welded to the plate member. The fixing portion 14 is fixed to the other end of the horizontal member 11 with bolts and nuts, and the bolts are thread-welded to prevent dropping.
以下、本発明を工程順に説明する。
「鉄骨柱の頂部に、該鉄骨柱の外周から突出する固定部を有する垂直ネット設置治具を取り付ける工程」
地上の仮置部などで鉄骨柱2の頂部に、垂直ネット設置治具1を取り付ける(図2)。図3に、鉄骨柱2の頂部に取り付けられた垂直ネット設置治具1を示す。
垂直ネット設置治具1の二本の垂直材12、13が、鉄骨柱2の頂部を挟みつつ、鉄骨柱2の複数の上部エレクションピースのうち対向する2つの上部エレクションピース21と重なるように、鉄骨柱2の頂部に垂直ネット設置治具1を配置する。上部エレクションピース21にはボルト穴が設けられており、第一の垂直材12の先端にワイヤーを介して係合しているボルト16を、第一の垂直材12と上部エレクションピース21のボルト穴に通し、ナットで締め、溶接する。第二の垂直材13も同様にエレクションピース21とボルト16で固定することにより、鉄骨柱2の頂部に垂直ネット設置治具1が取り付けられる。鉄骨柱2の頂部を2本の垂直材12、13で挟みこむように固定しているため、万一ナットが緩んでも垂直ネット設置治具1の落下を防止できる。垂直ネット設置治具1の固定部14は、鉄骨梁架設作業の障害とならないように鉄骨柱の外周から突出する。また、鉄骨柱2には、建て込みした後に作業者が登れるように仮設タラップ(図示せず。)が取り付けられる。さらに、水平材11の一端に設けられたワイヤー15の先端を、垂直ネット設置治具1の落下防止のために鉄骨柱2のフック、またはエレクションピースに係合する。垂直ネット設置治具1は、鉄骨柱2が工場等から現場に運び込まれ、地上に横たわった状態で取り付けられるため、容易、かつ安全に取り付けることができる。なお、現実の鉄骨柱2は複数個のフックを有するが、簡略化のため図2〜図7では被覆ワイヤー用フック22のみを図示している。
Hereinafter, the present invention will be described in the order of steps.
“A step of attaching a vertical net installation jig having a fixing portion protruding from the outer periphery of the steel column to the top of the steel column”
The vertical net installation jig 1 is attached to the top of the steel column 2 with a temporary placement part on the ground (FIG. 2). FIG. 3 shows the vertical net installation jig 1 attached to the top of the steel column 2.
The two vertical members 12 and 13 of the vertical net installation jig 1 overlap the two upper erection pieces 21 facing each other among the plurality of upper erection pieces of the steel column 2 while sandwiching the top of the steel column 2. A vertical net installation jig 1 is placed on the top of the steel column 2. The upper erection piece 21 is provided with a bolt hole, and the bolt 16 engaged with the tip of the first vertical member 12 via a wire is used as the bolt hole between the first vertical member 12 and the upper erection piece 21. , Tighten with nuts and weld. Similarly, by fixing the second vertical member 13 with the erection piece 21 and the bolt 16, the vertical net installation jig 1 is attached to the top of the steel column 2. Since the top of the steel column 2 is fixed so as to be sandwiched between the two vertical members 12 and 13, even if the nut is loosened, the vertical net installation jig 1 can be prevented from falling. The fixing portion 14 of the vertical net installation jig 1 protrudes from the outer periphery of the steel column so as not to hinder the steel beam erection work. In addition, a temporary trap (not shown) is attached to the steel column 2 so that an operator can climb after being built. Furthermore, the tip of the wire 15 provided at one end of the horizontal member 11 is engaged with the hook of the steel column 2 or the erection piece in order to prevent the vertical net installation jig 1 from falling. The vertical net installation jig 1 can be easily and safely installed because the steel column 2 is carried from a factory or the like to the site and is laid on the ground. Although the actual steel column 2 has a plurality of hooks, only the covered wire hooks 22 are shown in FIGS. 2 to 7 for simplification.
「前記鉄骨柱を、前記固定部が外側となるように建て込む工程」
頂部に垂直ネット設置治具1を取り付けた鉄骨柱2を、クレーンにて建て込む(図4)。この際、鉄骨柱2の外周から突出している垂直ネット設置治具1の固定部14が、建築物の外側となるように建て込む。
“Process of building the steel column so that the fixed part is on the outside”
A steel column 2 with a vertical net installation jig 1 attached to the top is built with a crane (FIG. 4). At this time, the fixing part 14 of the vertical net installation jig 1 protruding from the outer periphery of the steel column 2 is built so as to be outside the building.
「垂直ネットが固定された棒部材の両端それぞれを、隣接する前記鉄骨柱の前記固定部に取り付ける工程」
垂直ネット4の一辺が結束紐で固定された棒部材3をクレーンで揚重し、垂直ネット4が垂れ下がった状態で棒部材3の両端を隣接する鉄骨柱2に取り付けられた垂直ネット設置治具1の固定部14に取り付ける(図5)。固定部14は、建築物の外側となるように設置されているため、隣接する固定部14に棒部材3の両端を取り付けるだけで、建築物の外周を垂直ネット4で覆うことができる。垂直ネット4は、風でばたつかないように鉄骨柱2や被覆ワイヤー等に適宜結束する。棒部材3と垂直ネット4の固定は地上で行うことができ、また、棒部材3と小さく折り畳まれた垂直ネット4を敷くことができるスペースがあれば棒部材3に垂直ネット4を固定できるため、狭い建設敷地でも作業を行うことができる。
“A process of attaching both ends of the bar member to which the vertical net is fixed to the fixing portion of the adjacent steel column”
A vertical net installation jig in which a bar member 3 whose one side is fixed with a binding string is lifted by a crane, and both ends of the bar member 3 are attached to adjacent steel columns 2 in a state where the vertical net 4 hangs down. 1 is attached to the fixed portion 14 (FIG. 5). Since the fixed part 14 is installed so as to be outside the building, the vertical net 4 can cover the outer periphery of the building simply by attaching both ends of the bar member 3 to the adjacent fixed part 14. The vertical net 4 is appropriately bound to the steel column 2 or the covered wire so as not to flutter in the wind. The bar member 3 and the vertical net 4 can be fixed on the ground, and the vertical net 4 can be fixed to the bar member 3 if there is a space in which the bar member 3 and the vertically folded vertical net 4 can be laid. You can work even in a small construction site.
「前記垂直ネットの内部で、鉄骨梁を架設する工程」
鉄骨柱2の間に取り付けられた垂直ネット4の内部で、鉄骨梁5を架設する(図6)。鉄骨梁5の架設は垂直ネット4の内部で行われるため、鉄骨梁5を架設する際にボルトや工具が落下しても、垂直ネット4の外部にいる歩行者や通行車両の上に落下することはない。
“Process of installing steel beam inside the vertical net”
A steel beam 5 is installed inside the vertical net 4 attached between the steel columns 2 (FIG. 6). Since the steel beam 5 is installed inside the vertical net 4, even if a bolt or a tool falls when the steel beam 5 is installed, it falls onto a pedestrian or a passing vehicle outside the vertical net 4. There is nothing.
「前記鉄骨柱にワイヤーを取り付け、前記垂直ネットを前記棒部材から前記ワイヤーに付け替えた後に、前記棒部材と前記垂直ネット設置治具とを前記鉄骨柱から取り外す工程」
鉄骨梁5を架設した鉄骨柱2の被覆ワイヤー用フック22に被覆ワイヤー6を取り付け、棒部材3と垂直ネット4とを固定していた結束紐を緩めて、垂直ネット4を棒部材3から被覆ワイヤー6に付け替えた後に、垂直ネット4が取り外された棒部材3と垂直ネット設置治具1とを鉄骨柱2から取り外し、クレーンで下ろす(図7)。従来用いられている被覆ワイヤー6に垂直ネット4を付け替え、棒部材3を取り除くことで、カーテンウォール工事等の鉄骨梁5架設後の施工を行う際に棒部材3が邪魔とならない。また、鉄骨柱2の頂部から垂直ネット設置治具1を取り外すことで、鉄骨柱2上に上節柱となる別の鉄骨柱を接合することができる。この別の鉄骨柱に本発明の垂直ネット先行設置工法を適用しながら、鉄骨柱を積み上げることにより、高層建築物を建設することができる。
“Attaching a wire to the steel column and removing the rod member and the vertical net installation jig from the steel column after changing the vertical net from the rod member to the wire”
The covered wire 6 is attached to the covered wire hook 22 of the steel column 2 on which the steel beam 5 is installed, the binding string that has fixed the bar member 3 and the vertical net 4 is loosened, and the vertical net 4 is covered from the bar member 3 After changing to the wire 6, the bar member 3 from which the vertical net 4 has been removed and the vertical net installation jig 1 are removed from the steel column 2 and lowered with a crane (FIG. 7). By replacing the vertical net 4 with the conventionally used covered wire 6 and removing the bar member 3, the bar member 3 does not get in the way when performing construction after the construction of the steel beam 5 such as curtain wall construction. Further, by removing the vertical net installation jig 1 from the top of the steel column 2, another steel column that becomes the upper node column can be joined on the steel column 2. A high-rise building can be constructed by stacking steel columns while applying the vertical net advance installation method of the present invention to the other steel columns.
1 垂直ネット設置治具
11 水平材
12 第一の垂直材
13 第二の垂直材
14 固定部
15 ワイヤー
16 ボルト

2 鉄骨柱
21 上部エレクションピース
22 被覆ワイヤー用フック

3 棒部材

4 垂直ネット

5 鉄骨梁

6 被覆ワイヤー
DESCRIPTION OF SYMBOLS 1 Vertical net installation jig | tool 11 Horizontal material 12 1st vertical material 13 2nd vertical material 14 Fixing part 15 Wire 16 Bolt

2 Steel column 21 Upper erection piece 22 Hook for covered wire

3 Bar material

4 Vertical net

5 Steel beams

6 Coated wire

Claims (1)

  1. 鉄骨柱の頂部に、該鉄骨柱の外周から突出する固定部を有する垂直ネット設置治具を取り付ける工程、
    前記鉄骨柱を、前記固定部が外側となるように建て込む工程、
    垂直ネットが固定された棒部材の両端それぞれを、隣接する前記鉄骨柱の前記固定部に取り付ける工程、
    前記垂直ネットの内部で、鉄骨梁を架設する工程、
    前記鉄骨柱にワイヤーを取り付け、前記垂直ネットを前記棒部材から前記ワイヤーに付け替えた後に、前記棒部材と前記垂直ネット設置治具とを前記鉄骨柱から取り外す工程、
    を有することを特徴とする、垂直ネット先行設置工法。
    Attaching a vertical net installation jig having a fixing portion protruding from the outer periphery of the steel column to the top of the steel column;
    Building the steel column so that the fixed portion is on the outside;
    Attaching both ends of the bar member to which the vertical net is fixed to the fixing portion of the adjacent steel column;
    Laying a steel beam inside the vertical net;
    A step of attaching a wire to the steel column and removing the bar member and the vertical net installation jig from the steel column after changing the vertical net from the rod member to the wire.
    A vertical net advance installation method characterized by comprising:
JP2015096149A 2015-05-11 2015-05-11 Vertical net pre-installation method Pending JP2016211234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2015096149A JP2016211234A (en) 2015-05-11 2015-05-11 Vertical net pre-installation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015096149A JP2016211234A (en) 2015-05-11 2015-05-11 Vertical net pre-installation method

Publications (1)

Publication Number Publication Date
JP2016211234A true JP2016211234A (en) 2016-12-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108060786A (en) * 2017-12-26 2018-05-22 河北亿安工程技术股份有限公司 Construction protecting screen
JP2018131759A (en) * 2017-02-14 2018-08-23 株式会社鈴木組 Method of installing curing net

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018131759A (en) * 2017-02-14 2018-08-23 株式会社鈴木組 Method of installing curing net
CN108060786A (en) * 2017-12-26 2018-05-22 河北亿安工程技术股份有限公司 Construction protecting screen

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