JP3659918B2 - Floor slab structural material - Google Patents

Floor slab structural material Download PDF

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Publication number
JP3659918B2
JP3659918B2 JP2001401310A JP2001401310A JP3659918B2 JP 3659918 B2 JP3659918 B2 JP 3659918B2 JP 2001401310 A JP2001401310 A JP 2001401310A JP 2001401310 A JP2001401310 A JP 2001401310A JP 3659918 B2 JP3659918 B2 JP 3659918B2
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Japan
Prior art keywords
self
support member
bent
supporting truss
iron plate
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JP2001401310A
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JP2003193608A (en
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太郎 河西
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太郎 河西
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Description

【０００１】
【発明が属する技術分野】
この発明は、コンクリート床版の構築に使用する型枠と自立型トラスよりなる構造材に関し、特に、自立型トラスの端部固定部材の構造に関する。
【０００２】
【従来の技術】
従来のコンクリート床版の構築においては、図５の正面図（ａ）および側面図（ｂ）に示すように、１本の上弦筋11と２本の下弦筋12を三角状に配置し、波状に屈曲させたラチス筋13の上側折曲部15を上弦筋11に溶接し、ラチス筋13の下部を下弦筋12に溶接して自立型トラス１を形成したのち、このラチス筋13の下側折曲部16をデッキプレート、キーストンプレート、リブプレートなどの平行な複数の溝型を形成した鉄板２に溶接して構造材を作り、この構造材を横梁の間に架け渡して、鉄板２を捨て型枠としてコンクリートを打設する施工法が実施されている。
【０００３】
この施工法によると、自立型トラス１によって打設されたコンクリートの仮設的な荷重を支持することができるので、型枠となる鉄板２を下側から保持する保持部材が不要であり、したがって、コンクリート打設後の型枠解体作業が不要になる。そして、コンクリートの硬化後には、自立型トラス１が鉄筋コンクリートの主筋の役目を果たすものである。
【０００４】
【発明が解決しようとする課題】
施工に際して構造材を横梁に架け渡すと、図６に示すように、鉄板２の端部を横梁３の上に載置することになるので、横梁３によって自立型トラス１を直接支持させるために、上弦筋11および下弦筋12の端部を突出させ、２本の下弦筋12の突出部に水平方向に第１の鉄筋21を溶接し、上弦筋11の端部と第１の鉄筋21の中央部との間に垂直方向に第２の鉄筋22を溶接して端部固定部材20を形成する。この第２の鉄筋21の下端部は、横梁３に載置される鉄板２の上面に突き合わせるか、図６の側面図（ｃ）に示すように、横梁３の形状に合わせて、クランク状に曲げられている。
【０００５】
このような構造材を使用して、コンクリートを打設すると、構造材の自重および打設されたコンクリートの仮設的な重量を端部固定部材20を介して自立型トラス１により横梁３で支持することができる。
【０００６】
しかし、自立型トラス１の端部に端部固定部材20を形成する際に、下弦筋12の突出部に水平方向に第１の鉄筋21を溶接し、上弦筋11の端部と第１の鉄筋21の中央部との間に垂直方向に第２の鉄筋22を溶接しているが、この２本の鉄筋を溶接する工程は手作業によって行われており、機械化することが困難であった。
【０００７】
また、従来のトラス製造装置においては、連続的に曲げ加工されるラチス筋13の曲げピッチが一定であるから、製造した自立型トラス１を横梁３のスパンに合わせて所望の長さに切断したとき、ラチス筋13の切断位置が、繰り返されるピッチ中のどの位置に当たるか不定であり、切断位置がラチス筋13の上側屈曲部15に当たるとは限らない。
【０００８】
そのために、自立型トラス１をラチス筋13の上側屈曲部15に当たる位置で切断すると、切断した自立型トラス１の長さは、ラチス筋13の１ピッチの整数倍に限られて、横梁３のスパンとは必ずしも一致しない。また、横梁３のスパンに合わせて自立型トラス13を切断すると、切断位置がラチス筋13の上側屈曲部15に当たる位置に必ずしも一致しない。
【０００９】
そこで、この発明は、このような構造材における自立型トラスの端部固定部材が有する課題を解決し、端部固定部材を人手によることなく機械によって形成し得るように構成し、かつ、繰り返されるラチス筋のピッチ中のどの位置においても端部固定部材を形成することを目的として考えられたものである。
【００１０】
【課題を解決するための手段】
この発明の床版の構造材は、１本の上弦筋11と２本の下弦筋12を三角状に配置し、波状に屈曲させた２本のラチス筋13の上側屈曲部15に上弦筋11を溶接し、各ラチス筋13の下部内側に下弦筋12をそれぞれ溶接した自立型トラス１と、鉄筋をＶ字形に曲げ、このＶ字形の鉄筋31を含む面と垂直方向に両端部を曲げて下端部33を形成した支持部材30と、平行な複数の溝型を形成した鉄板２とを具備し、自立型トラス１の端部に支持部材30を嵌め込んで、この支持部材30のＶ字形の頂部32を上弦筋11の下面に突き合わせ、この支持部材30の外側面を下弦筋12の内側面に溶接して端部固定部材を形成し、この端部固定部材を形成した自立型トラス１を鉄板２に載置してラチス筋13の下側屈曲部16を鉄板２溶接して固定したものである。
【００１１】
また、この発明の床版の構造材は、１本の上弦筋11と２本の下弦筋12を三角状に配置し、波状に屈曲させた２本のラチス筋13の上側屈曲部15に上弦筋11を溶接し、各ラチス筋13の下部内側に下弦筋12をそれぞれ溶接した自立型トラス１と、鉄筋をコ字形に曲げ、このコ字形の鉄筋34を含む面と垂直方向に両端部を曲げて下端部33を形成した支持部材30ａと、平行な複数の溝型を形成した鉄板２とを具備し、自立型トラス１の端部にコ字形の支持部材30ａを嵌め込んで、この支持部材30ａのコ字形の頂部35を下弦筋12の下面に突き合わせて溶接して端部固定部材を形成し、この端部固定部材を形成した自立型トラス１を鉄板２に載置してラチス筋13の下側屈曲部16を鉄板２溶接して固定してもよいのである。
【００１２】
【発明の実施の形態】
図５の正面図（ａ）および側面図（ｂ）に示すように、１本の上弦筋11と２本の下弦筋12を三角状に配置し、波形に屈曲させた２本のラチス筋13の各上側屈曲部で上弦筋11を挟むように溶接し、各ラチス筋13の下部内側に下弦筋12をそれぞれ溶接して自立型トラス１を構成する。
【００１３】
図５の正面図（ａ）から明らかなように、２本のラチス筋13の下部内側に下弦筋12を溶接すると、自立型トラス１と鉄板２で囲まれる空間Ｂには、自立型トラス１の全長にわたって何も存在しない。
【００１４】
そこで、支持部材として、自立型トラス１と鉄板２で囲まれる空間Ｂの中に収まる形状として、自立型トラス１の全長にわたって任意の位置に取り付けることができるように構成したものである。
【００１５】
（第１の実施形態）
図２の正面図（ａ）および側面図（ｂ）に示すように、鉄筋をＶ字形に曲げ、さらに、このＶ字形の鉄筋31を含む面に垂直な方向へ両端部を曲げて下端部33とした支持部材30を形成する。また、支持部材30の下端部33は、図１の側面図（ｃ）に示すように、横梁の形状に合わせてクランク状に曲げてもよいのである。また、図２の側面図（ｄ）に示すように、Ｖ字形の鉄筋31の両端部を互いに反対方向に曲げて下端部33、33ａとした支持部材30を形成してもよいのである。
【００１６】
図１の正面図（ａ）および側面図（ｂ）に示すように、自立型トラス１の端部に支持部材30を嵌め込み、支持部材30のＶ字形の頂部32を上弦筋11の下面に突き合わせ、支持部材30の鉄筋31の外側面を下弦筋12の内側面に溶接して自立型トラス１の端部に固定する。なお、支持部材30のＶ字形の頂部32には下向きの荷重がかかるから、Ｖ字形の頂部32を上弦筋11に必ずしも溶接しなくてもよいのである。
【００１７】
支持部材30を端部に固定した自立型トラス１をデッキプレート、キーストンプレート、リブプレートなどの平行な複数の溝型を形成した鉄板２の上に載置すると、支持部材30の下端部33が鉄板２の上に接することになり、２本のラチス筋13の各下側屈曲部を鉄板２に溶接して床版の構造材を完成する。
【００１８】
そして、この構造材を横梁の間に架け渡し、鉄板２を捨て型枠としてコンクリートを打設して床スラブを構築するのである。
【００１９】
構造材が長く、コンクリートの打設時に中間部を支持しなければならない場合には、自立型トラス１の中間部にも支持部材30を固定すればよいのである。
【００２０】
（第２の実施形態）
支持部材として、図４の正面図（ａ）および側面図（ｂ）に示すように、鉄筋をコ字形に曲げ、さらに、このコ字形の鉄筋34を含む面に垂直な方向へ両端部を曲げて下端部33とした支持部材30ａを形成する。また、支持部材30ａの下端部33は、図４の側面図（ｃ）に示すように、横梁の形状に合わせてクランク状に曲げてもよいのである。さらに、図４の側面図（ｄ）に示すように、コ字形の鉄筋34の両端部を互いに反対方向に曲げて下端部33、33ａとした支持部材30ａを形成してもよいのである。
【００２１】
図３の正面図（ａ）および側面図（ｂ）に示すように、自立型トラス１の端部の下弦筋12の下にコ字形の支持部材30ａを嵌め込み、この支持部材30ａの頂部35を下弦筋12の下面に突き合わせて溶接し、自立型トラス１の端部に固定する。
【００２２】
支持部材30ａを端部に固定した自立型トラス１を平行な複数の溝型を形成した鉄板２の上に載置すると、支持部材30ａの下端部33が鉄板２の上に接することになり、２本のラチス筋13の各下側屈曲部16を鉄板２に溶接して床版の構造材を完成する。
【００２３】
（その他の実施形態）
以上で説明した実施形態においては、Ｖ字形の支持部材30およびコ字形の支持部材30ａとして鉄筋を曲げ加工したものを使用しているが、Ｖ字形の支持部材30の代わりに三角形の鉄板を使用し、コ字形の支持部材30ａの代わりに四角形または台形の鉄板を使用してもよいのである。
【００２４】
【発明の効果】
以上で説明した実施の形態に基づく説明から明らかなように、この発明の床版の構造材によると、自立型トラス１の端部固定部材は、１つのＶ字形の支持部材30またはコ字形の支持部材30ａによって構成されているので、この支持部材30、30ａを自立型トラス１の端部に供給する工程および支持部材30、30ａを下弦筋12に溶接する工程が簡素化されて機械化が容易である。
【００２５】
また、支持部材30、30ａを自立型トラス１と鉄板２で囲まれる空間Ｂに収まる形状にすることにより、自立型トラス１の全長にわたって任意の位置に取り付けることができるので、繰り返されるラチス筋のピッチ中のどの位置においても端部固定部材を形成することが可能である。
【図面の簡単な説明】
【図１】この発明の床版の構造材の第１の実施形態を示す正面図（ａ）および側面図（ｂ）、
【図２】図１に示す床版の構造材において使用する支持部材の正面図（ａ）および側面図（ｂ）（ｃ）（ｄ）、
【図３】この発明の床版の構造材の第２の実施形態を示す正面図（ａ）および側面図（ｂ）、
【図４】図３に示す床版の構造材において使用する支持部材の正面図（ａ）および側面図（ｂ）（ｃ）（ｄ）、
【図５】この発明を適用する床版の構造材の一例を示す正面図（ａ）および側面図（ｂ）、
【図６】従来の床版の構造材の端部を示す正面図（ａ）および側面図（ｂ）（ｃ）である。
【符号の説明】
Ｂ 空間
１ 自立型トラス
２ 溝型を形成した鉄板
３ 横梁
11 上弦筋
12 下弦筋
13 ラチス筋
15 上側屈曲部
16 下側屈曲部
30、30ａ 支持部材
31 Ｖ字形の鉄筋
32 頂部
33 下端部
34 コ字形の鉄筋[0001]
[Technical field to which the invention belongs]
The present invention relates to a structural material including a formwork used for construction of a concrete slab and a self-supporting truss, and more particularly to a structure of an end fixing member of the self-supporting truss.
[0002]
[Prior art]
In the construction of a conventional concrete slab, as shown in a front view (a) and a side view (b) of FIG. 5, one upper chord 11 and two lower chords 12 are arranged in a triangular shape, and are wavy. After welding the upper bent portion 15 of the lattice 13 bent to the upper chord 11 and welding the lower part of the lattice 13 to the lower chord 12 to form the self-supporting truss 1, the lower side of the lattice 13 The bent portion 16 is welded to an iron plate 2 formed with a plurality of parallel grooves such as a deck plate, a keystone plate, and a rib plate, and a structural material is made. There is a construction method in which concrete is cast as a discarded formwork.
[0003]
According to this construction method, since a temporary load of concrete placed by the self-supporting truss 1 can be supported, a holding member for holding the iron plate 2 as a formwork from the lower side is unnecessary. No need to dismantle formwork after placing concrete. And after hardening of concrete, the self-supporting truss 1 plays the role of the main reinforcement of reinforced concrete.
[0004]
[Problems to be solved by the invention]
When the structural material is crossed over the cross beam at the time of construction, as shown in FIG. 6, the end of the iron plate 2 is placed on the cross beam 3, so that the self-supporting truss 1 is directly supported by the cross beam 3. The ends of the upper chord 11 and the lower chord 12 are protruded, the first reinforcing bars 21 are welded horizontally to the protruding portions of the two lower chords 12, and the ends of the upper chord 11 and the first reinforcing bar 21 are The end reinforcing member 20 is formed by welding the second reinforcing bar 22 in the vertical direction between the central portion and the central portion. The lower end portion of the second reinforcing bar 21 is abutted against the upper surface of the iron plate 2 placed on the cross beam 3 or, as shown in the side view (c) of FIG. Is bent.
[0005]
When concrete is placed using such a structural material, the weight of the structural material and the temporary weight of the placed concrete are supported by the transverse beam 3 by the self-supporting truss 1 via the end fixing member 20. be able to.
[0006]
However, when the end fixing member 20 is formed at the end of the self-supporting truss 1, the first rebar 21 is welded horizontally to the projecting portion of the lower chord 12, and the end of the upper chord 11 and the first The second rebar 22 is welded in the vertical direction between the central part of the rebars 21, but the process of welding these two rebars is done manually and difficult to mechanize. .
[0007]
Further, in the conventional truss manufacturing apparatus, since the bending pitch of the lattice 13 that is continuously bent is constant, the manufactured self-supporting truss 1 is cut to a desired length according to the span of the cross beam 3. Sometimes, the cutting position of the lattice 13 is indeterminate in the repeated pitch, and the cutting position does not necessarily hit the upper bent portion 15 of the lattice 13.
[0008]
For this purpose, when the self-supporting truss 1 is cut at a position where it hits the upper bent portion 15 of the lattice muscle 13, the length of the cut self-supporting truss 1 is limited to an integral multiple of one pitch of the lattice 13. It does not necessarily match the span. Further, when the self-supporting truss 13 is cut in accordance with the span of the horizontal beam 3, the cutting position does not necessarily coincide with the position hitting the upper bent portion 15 of the lattice 13.
[0009]
Therefore, the present invention solves the problems of the end fixing member of the self-supporting truss in such a structural material, and is configured so that the end fixing member can be formed by a machine without manual operation, and is repeated. This is considered for the purpose of forming the end fixing member at any position in the pitch of the lattice.
[0010]
[Means for Solving the Problems]
The structural material of the floor slab of the present invention has one upper chord 11 and two lower chords 12 arranged in a triangular shape, and the upper chord 11 is formed on the upper bent portion 15 of the two lattice 13 bent in a wave shape. , Welded the truss 1 with the lower chord 12 welded inside the lower part of each lattice 13 and bent the rebar into a V shape and bent both ends perpendicular to the plane containing this V-shaped rebar 31 A support member 30 having a lower end 33 and an iron plate 2 having a plurality of parallel grooves are provided, and the support member 30 is fitted into the end of the self-supporting truss 1 to form a V-shape of the support member 30. A self-supporting truss 1 in which an end fixing member is formed by abutting the top portion 32 of the base member 32 with the lower surface of the upper chord 11 and welding the outer surface of the support member 30 to the inner surface of the lower chord 12. Is placed on the iron plate 2 and the lower bent portion 16 of the lattice 13 is welded and fixed.
[0011]
In addition, the structural material of the floor slab of the present invention is arranged such that one upper chord muscle 11 and two lower chord muscles 12 are arranged in a triangular shape, and the upper chord is formed on the upper bent portion 15 of the two lattice muscles 13 bent in a wave shape. Welded bar 11 and self-supporting truss 1 which welded lower chord 12 to the lower inner side of each lattice bar 13 and bend the reinforcing bar into a U-shape, and end both ends perpendicular to the plane containing this U-shaped bar 34 The support member 30a is bent to form the lower end 33, and the iron plate 2 is formed with a plurality of parallel grooves, and a U-shaped support member 30a is fitted into the end of the self-supporting truss 1 to support this. The U-shaped top portion 35 of the member 30a is butted against the lower surface of the lower chord 12 and welded to form an end fixing member, and the self-supporting truss 1 having the end fixing member is placed on the iron plate 2 to form the lattice muscle. Alternatively, the lower bent portion 16 of 13 may be fixed by welding the iron plate 2.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
As shown in a front view (a) and a side view (b) of FIG. 5, two lattice muscles 13 are arranged such that one upper chord muscle 11 and two lower chord muscles 12 are arranged in a triangular shape and bent into a waveform. The self-supporting truss 1 is constructed by welding so that the upper chords 11 are sandwiched between the upper bent portions of each of the lower chords 12 and the lower chords 12 are welded to the lower inner sides of the lattice 13.
[0013]
As is apparent from the front view (a) of FIG. 5, when the lower chord 12 is welded to the lower inner side of the two lattices 13, the space B surrounded by the self-supporting truss 1 and the iron plate 2 has a self-supporting truss 1. There is nothing over the entire length of.
[0014]
Therefore, the support member is configured to fit within the space B surrounded by the self-supporting truss 1 and the iron plate 2 so that the support member can be attached to any position over the entire length of the self-supporting truss 1.
[0015]
(First embodiment)
As shown in a front view (a) and a side view (b) of FIG. 2, the reinforcing bar is bent into a V shape, and both ends are bent in a direction perpendicular to the surface including the V-shaped reinforcing bar 31, and the lower end portion 33 is bent. The support member 30 is formed. Further, as shown in the side view (c) of FIG. 1, the lower end portion 33 of the support member 30 may be bent into a crank shape in accordance with the shape of the cross beam. Further, as shown in the side view (d) of FIG. 2, the support member 30 may be formed by bending both ends of the V-shaped reinforcing bar 31 in opposite directions to form the lower ends 33, 33a.
[0016]
As shown in the front view (a) and side view (b) of FIG. 1, the support member 30 is fitted into the end portion of the self-supporting truss 1, and the V-shaped top portion 32 of the support member 30 is butted against the lower surface of the upper chord muscle 11. The outer surface of the reinforcing bar 31 of the support member 30 is welded to the inner surface of the lower chord 12 and fixed to the end of the self-supporting truss 1. Since a downward load is applied to the V-shaped top portion 32 of the support member 30, the V-shaped top portion 32 does not necessarily have to be welded to the upper chord 11.
[0017]
When the self-supporting truss 1 with the support member 30 fixed to the end is placed on the iron plate 2 formed with a plurality of parallel grooves such as a deck plate, a keystone plate, and a rib plate, the lower end 33 of the support member 30 is The bottom slab structural material is completed by welding the lower bent portions of the two lattice bars 13 to the iron plate 2 in contact with the iron plate 2.
[0018]
Then, the structural material is bridged between the horizontal beams, and the floor slab is constructed by placing concrete with the iron plate 2 being discarded as a formwork.
[0019]
If the structural material is long and the intermediate portion must be supported when placing concrete, the support member 30 may be fixed to the intermediate portion of the self-supporting truss 1.
[0020]
(Second Embodiment)
As a support member, as shown in the front view (a) and side view (b) of FIG. 4, the reinforcing bar is bent into a U-shape, and both ends are bent in a direction perpendicular to the plane including the U-shaped reinforcing bar 34. Thus, the support member 30a having the lower end portion 33 is formed. Further, as shown in the side view (c) of FIG. 4, the lower end portion 33 of the support member 30a may be bent into a crank shape in accordance with the shape of the cross beam. Further, as shown in the side view (d) of FIG. 4, both ends of the U-shaped reinforcing bar 34 may be bent in opposite directions to form a support member 30a having lower ends 33, 33a.
[0021]
As shown in a front view (a) and a side view (b) of FIG. 3, a U-shaped support member 30a is fitted under the lower chord 12 at the end of the self-supporting truss 1, and the top 35 of the support member 30a is fitted. The bottom chord 12 is butted against the lower surface and welded, and fixed to the end of the self-supporting truss 1.
[0022]
When the self-supporting truss 1 with the support member 30a fixed to the end portion is placed on the iron plate 2 having a plurality of parallel groove dies, the lower end portion 33 of the support member 30a comes into contact with the iron plate 2. The lower bent portions 16 of the two lattice bars 13 are welded to the iron plate 2 to complete the floor slab structural material.
[0023]
(Other embodiments)
In the embodiment described above, the V-shaped support member 30 and the U-shaped support member 30a are formed by bending reinforcing bars, but a triangular iron plate is used instead of the V-shaped support member 30. However, a square or trapezoidal iron plate may be used instead of the U-shaped support member 30a.
[0024]
【The invention's effect】
As is clear from the description based on the embodiment described above, according to the floor slab structural material of the present invention, the end fixing member of the self-supporting truss 1 is one V-shaped support member 30 or a U-shaped support member. Since it is constituted by the support member 30a, the process of supplying the support members 30, 30a to the end of the self-supporting truss 1 and the process of welding the support members 30, 30a to the lower chord 12 are simplified and mechanized easily. It is.
[0025]
Further, by making the support members 30 and 30a into a shape that fits in the space B surrounded by the self-supporting truss 1 and the iron plate 2, the support members 30 and 30a can be attached to any position over the entire length of the self-supporting truss 1, so The end fixing member can be formed at any position in the pitch.
[Brief description of the drawings]
FIG. 1 is a front view (a) and a side view (b) showing a first embodiment of a structural material of a floor slab according to the present invention;
2 is a front view (a) and side views (b), (c), and (d) of a support member used in the structural material of the floor slab shown in FIG.
FIG. 3 is a front view (a) and a side view (b) showing a second embodiment of a structural material of a floor slab according to the present invention;
4 is a front view (a) and side views (b), (c), and (d) of a support member used in the structural material of the floor slab shown in FIG. 3;
FIG. 5 is a front view (a) and a side view (b) showing an example of a floor slab structural material to which the present invention is applied;
FIG. 6 is a front view (a) and side views (b) and (c) showing an end portion of a structural material of a conventional floor slab.
[Explanation of symbols]
B Space 1 Self-supporting truss 2 Groove-shaped iron plate 3 Horizontal beam
11 First quarter muscle
12 Lower chord
13 Lattice muscle
15 Upper bend
16 Lower bend
30, 30a Support member
31 V-shaped rebar
32 Top
33 Bottom edge
34 U-shaped rebar

Claims (2)

１本の上弦筋と２本の下弦筋を三角状に配置し、波状に屈曲させた２本のラチス筋の上側屈曲部に上弦筋を溶接し、各ラチス筋の下部内側に下弦筋をそれぞれ溶接した自立型トラスと、鉄筋をＶ字形に曲げ、このＶ字形の鉄筋を含む面と垂直方向に両端部を曲げて下端部を形成した支持部材と、平行な複数の溝型を形成した鉄板とを具備し、
上記自立型トラスの端部に上記支持部材を嵌め込んで、該支持部材のＶ字形の頂部を上弦筋の下面に突き合わせ、該支持部材の外側面を下弦筋の内側面に溶接して端部固定部材を形成し、この自立型トラスを上記鉄板に載置して上記ラチス筋の下側屈曲部を上記鉄板に溶接して固定したことを特徴とする床版の構造材。1 upper and 2 lower chords are arranged in a triangular shape, and the upper chords are welded to the upper bends of the 2 bent lattices, and the lower chords are placed on the lower inner side of each lattice. A welded self-supporting truss, a supporting member in which a reinforcing bar is bent into a V-shape and both ends are bent in a direction perpendicular to the surface including the V-shaped reinforcing bar, and a bottom plate is formed, and an iron plate in which a plurality of parallel grooves are formed And
The support member is fitted into the end of the self-supporting truss, the V-shaped top of the support member is butted against the lower surface of the upper chord, and the outer surface of the support member is welded to the inner surface of the lower chord. A structural member for a floor slab, wherein a fixing member is formed, the self-supporting truss is placed on the iron plate, and a lower bent portion of the lattice is welded and fixed to the iron plate. １本の上弦筋と２本の下弦筋を三角状に配置し、波状に屈曲させた２本のラチス筋の上側屈曲部に上弦筋を溶接し、各ラチス筋の下部内側に下弦筋をそれぞれ溶接した自立型トラスと、鉄筋をコ字形に曲げ、このコ字形の鉄筋を含む面と垂直方向に両端部を曲げて下端部を形成した支持部材と、平行な複数の溝型を形成した鉄板とを具備し、
上記自立型トラスの端部に上記支持部材を嵌め込んで、該支持部材のコ字形の頂部を下弦筋の下面に突き合わせて溶接して端部固定部材を形成し、この自立型トラスを上記鉄板に載置して上記ラチス筋の下側屈曲部を上記鉄板に溶接して固定したことを特徴とする床版の構造材。1 upper and 2 lower chords are arranged in a triangular shape, and the upper chords are welded to the upper bends of the 2 bent lattices, and the lower chords are placed on the lower inner side of each lattice. A welded self-supporting truss, a reinforcing member bent in a U-shape, a support member that forms a lower end by bending both ends in a direction perpendicular to the plane containing the U-shaped reinforcing bar, and an iron plate that forms a plurality of parallel grooves And
The support member is fitted into the end portion of the self-supporting truss, and the U-shaped top portion of the support member is butted against the lower surface of the lower chord to form an end fixing member. The self-supporting truss is attached to the iron plate. A floor slab structural material characterized in that the lower bent portion of the lattice is fixed by welding to the iron plate.
JP2001401310A 2001-12-28 2001-12-28 Floor slab structural material Expired - Fee Related JP3659918B2 (en)

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JP6017083B1 (en) * 2016-07-06 2016-10-26 株式会社富士昭技研 Floor slab unit, floor slab construction method, and floor construction method
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