JP4500209B2 - Synthetic floor slab bridge - Google Patents
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- JP4500209B2 JP4500209B2 JP2005142054A JP2005142054A JP4500209B2 JP 4500209 B2 JP4500209 B2 JP 4500209B2 JP 2005142054 A JP2005142054 A JP 2005142054A JP 2005142054 A JP2005142054 A JP 2005142054A JP 4500209 B2 JP4500209 B2 JP 4500209B2
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Description
本発明は、合成床版橋に関するものである。 The present invention relates to a composite floor slab bridge.
従来の合成床版橋としては、例えば特許文献１に記載されているものがある。 As a conventional synthetic floor slab bridge, there exists a thing described in patent document 1, for example.
特許文献１の合成床版橋は、第７図に示すように上部フランジを有するＴ形鋼を所要間隔に並列配置し、この各Ｔ形鋼のウエブの下端面間にわたって底鋼板を溶接し、Ｔ形鋼１のウエブ１ｂの高さ1/2から1/3程度の高さを有するよう台形波状に折曲げ形成した下配力鉄筋４の各上方水平部４ａを、各Ｔ形鋼１の上部フランジ１ａの上面に直交載置し、かつ隣接して配設された前記各下配力鉄筋４の終端下方水平部４ｂと始端下方水平部４ｂとを重ね継手接合し、前記底鋼板２の上面から下配力鉄筋４の各下方水平部４ｂの若干下方位置までに発泡樹脂板６を充填し、この発泡樹脂板６の上面から前記上配力鉄筋３の若干上方位置までコンクリート５を打設して、合成床版橋を構成する記載がされている。 In the composite floor slab bridge of Patent Document 1, T-shaped steels having upper flanges are arranged in parallel at a required interval as shown in FIG. 7, and the bottom steel plate is welded between the lower end surfaces of the webs of the respective T-shaped steels. Each upper horizontal portion 4a of the lower distribution reinforcing bar 4 bent in a trapezoidal wave shape so as to have a height of about 1/2 to 1/3 of the height of the web 1b of the T-section steel 1 is The bottom lower horizontal part 4b and the start lower horizontal part 4b of each lower distribution reinforcing bar 4 placed orthogonally on the upper surface of the upper flange 1a and joined adjacently are joined by lap joint, The foamed resin plate 6 is filled from the upper surface to a position slightly below each lower horizontal portion 4 b of the lower strength reinforcing bar 4, and the concrete 5 is driven from the upper surface of the foamed resin plate 6 to a position slightly above the upper strength reinforcing bar 3. It is described that it constitutes a composite floor slab bridge.
ところで、Ｔ形鋼１のウエブ１ｂの高さは、橋の位置よって変化するものであり、例えば橋の頂上部と端部とではその高さが７５ｃｍ異なるので、充填する発泡樹脂板を現場において所定の寸法に切断する必要があり、その作業に手間と時間が掛かっていた。まして、Ｔ形鋼間と底鋼板とで形成された空間部７にほとんど隙間なく発泡樹脂板が充填されているものであり、つまりは発泡樹脂板の量が多いので、Ｔ形鋼１のウエブ１ｂの高さに合わせて該発泡樹脂板を切断する作業は大変な手間と時間が掛かるものであった。 By the way, the height of the web 1b of the T-section steel 1 changes depending on the position of the bridge. For example, the height of the top and the end of the bridge differs by 75 cm. It was necessary to cut to a predetermined size, and the work required time and effort. Furthermore, the space 7 formed between the T-shaped steel and the bottom steel plate is filled with the foamed resin plate with almost no gap. In other words, since the amount of the foamed resin plate is large, the web of the T-shaped steel 1 is used. The operation of cutting the foamed resin plate in accordance with the height of 1b takes a lot of labor and time.
本発明は、現場において発泡樹脂板の一部のみを切断することでＴ形鋼１のウエブ１ｂの高さが変化しても、従来より遙かに手間と時間が掛かることなく対応できる。その上、従来よりも発泡樹脂板の量を減らすことが出来たので、軽量化と経済的に優れた合成床版橋である。 Even if the height of the web 1b of the T-section steel 1 is changed by cutting only a part of the foamed resin plate at the site, the present invention can cope with much less time and effort than before. In addition, since the amount of the foamed resin plate can be reduced as compared with the prior art, it is a synthetic floor slab bridge that is lighter and economically superior.
すなわち、本発明の合成床版橋は、上部フランジを有するＴ形鋼を所要間隔に並列配置し、この各Ｔ形鋼のウエブの下端面間にわたって底鋼板を溶接し、かつＴ形鋼のウエブの高さの1/2から1/3程度の高さを有するよう折曲げ形成した下配力鉄筋の各上方水平部を、各Ｔ形鋼の上部フランジ上面に直交載置し、各Ｔ形鋼の上部フランジ上面よりも若干上方位置に、各Ｔ形鋼と直交して上配力鉄筋を配設し、前記底鋼板の上面から下配力鉄筋の各下方水平部の若干下方位置までに、発泡樹脂板を充填し、前記下配力鉄筋の各下方水平部の若干下方位置から前記上配力鉄筋の若干上方位置までコンクリートを打設して成る合成床版橋であって、発泡樹脂板の充填構造は、コンクリート打設時にコンクリートが発泡樹脂板よりも下方へ流出しないようにするとともに、該コンクリートを支持する支持部材と、該支持部材とコンクリートとを支持するとともに、切断可能な脚部材とを有するものであり、該支持部材は、脚部材の上に位置し、少なくともコンクリートと接触する面が連続するとともにＴ形鋼と密着し、該脚部材は、少なくとも一対で用いられ、かつそれら脚部材は底鋼板上でＴ形鋼と密着し、それら脚部材間に空間部７を有するものである。 That is, in the composite floor slab bridge of the present invention, T-shaped steels having upper flanges are arranged in parallel at a required interval, the bottom steel plate is welded between the lower end surfaces of the respective T-shaped steel webs, and the T-shaped steel webs are Each upper horizontal part of the lower strength reinforcing bar bent to have a height of about 1/2 to 1/3 of the height of the steel is placed orthogonally on the upper surface of the upper flange of each T-shaped steel, and each T-shaped An upper distribution reinforcing bar is arranged at a position slightly above the upper surface of the upper flange of the steel and orthogonal to each T-shaped steel, and from the upper surface of the bottom steel plate to a position slightly below each horizontal portion of the lower distribution reinforcing bar. A synthetic floor slab bridge filled with a foamed resin plate and formed by placing concrete from a position slightly below each lower horizontal portion of the lower strength bar to a position slightly above the upper strength bar, The board filling structure prevents the concrete from flowing out below the foamed resin board when placing concrete. And a supporting member that supports the concrete, and supports the supporting member and the concrete, and has a leg member that can be cut, and the supporting member is located on the leg member and is at least concrete. The surface in contact with the T-shaped steel is continuous, and the leg members are used in at least a pair, and the leg members are in close contact with the T-shaped steel on the bottom steel plate, and the space 7 is interposed between the leg members. It is what has.
本発明の合成床版橋によれば、Ｔ形鋼のウエブの高さが変化しても、従来より遙かに手間と時間が掛かることなく対応できる。その上、従来よりも発泡樹脂板の量を減らすことが出来たので、軽量化と経済的に優れたものである。 According to the composite floor slab bridge of the present invention, even if the height of the T-shaped steel web is changed, it can be dealt with without much time and trouble. Moreover, since the amount of the foamed resin plate can be reduced as compared with the conventional one, it is excellent in weight reduction and economically.
以下、本発明の実施形態について、図面に基づき詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
第１図は本発明の第１実施例における合成床版橋の横断面図、第２図は第１図のＡ−Ａ断面図、第３図は第７図のＢ−Ｂ断面図、第４図は本発明の第２実施例における合成床版橋の横断面、第５図は本発明の第３実施例における合成床版橋の横断面、第６図は本発明の第４実施例における合成床版橋の横断面である。 FIG. 1 is a cross-sectional view of the composite floor slab bridge in the first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, FIG. 3 is a cross-sectional view taken along line BB of FIG. 4 is a cross-sectional view of a composite floor slab bridge in the second embodiment of the present invention, FIG. 5 is a cross-sectional view of the composite floor slab bridge in the third embodiment of the present invention, and FIG. 6 is a fourth embodiment of the present invention. It is a cross section of the composite floor slab bridge in.
第１図乃至第３図に示すものは、本発明の第１実施例であって、上部フランジ1aを有するＴ形鋼１を所要間隔に並列配置し、この各Ｔ形鋼１のウエブ１ｂの下端面間にわたって底鋼板２を溶接し、各Ｔ形鋼１の上部フランジ1aの上面よりも若干上方位置に、各Ｔ形鋼１と直交して上配力鉄筋３を配設する。前記Ｔ形鋼１のウエブ１ｂの高さの1/2から1/3程度の高さを有するよう台形波状に折曲げ形成した下配力鉄筋４の各上方水平部4aを、各突起付Ｔ形鋼１の上部フランジ1aの上面に直交載置し、かつ隣接して配設された前記各下配力鉄筋４の終端下方水平部4bと始端下方水平部４ｂとを重ね継手接合し、前記底鋼板２の上面から下配力鉄筋４の各下方水平部4bの若干下方位置までに、密度が１６ｋｇ／ｍ３以下（好ましくは１２ｋｇ／ｍ３以下）の非常に軽い発泡樹脂板６を充填し、この発泡樹脂板６の上面から前記上配力鉄筋３の若干上方位置までコンクリート５を打設して合成床版橋を構成する。 1 to 3 show a first embodiment of the present invention, in which T-sections 1 having an upper flange 1a are arranged in parallel at a required interval, and the webs 1b of the respective T-sections 1 are arranged. The bottom steel plate 2 is welded between the lower end surfaces, and the upper reinforcing steel bars 3 are arranged at a position slightly above the upper surface of the upper flange 1a of each T-section steel 1 and orthogonal to each T-section steel 1. Each upper horizontal portion 4a of the lower distribution reinforcing bar 4 bent in a trapezoidal wave shape so as to have a height of about 1/2 to 1/3 of the height of the web 1b of the T-shaped steel 1 is provided with a T with a protrusion. The terminal lower horizontal portion 4b and the starting lower horizontal portion 4b of each lower distribution reinforcing bar 4 placed orthogonally on the upper surface of the upper flange 1a of the structural steel 1 are joined by lap joint joining, A very light foam resin plate 6 having a density of 16 kg / m 3 or less (preferably 12 kg / m 3 or less) is filled from the upper surface of the bottom steel plate 2 to a position slightly below each lower horizontal portion 4b of the lower reinforcing steel bar 4 Then, the concrete 5 is cast from the upper surface of the foamed resin plate 6 to a position slightly above the upper distribution reinforcing bar 3 to constitute a composite floor slab bridge.
第１図に示すように発泡樹脂板６は、脚部材の６ａ及び６ｅと、支持部材の６ｂ及び６ｃ及び６ｄとから構成されており、その発泡樹脂板６の充填構造は、該支持部材が脚部材の上に位置し、かつ少なくともコンクリートと接触する面が連続するとともにＴ形鋼と密着し、該脚部材は、少なくとも一対用いられ、かつそれら脚部材は底鋼板上でＴ形鋼と密着し、それら脚部材間に空間部７を有するものである。 As shown in FIG. 1, the foamed resin plate 6 is composed of leg members 6a and 6e and support members 6b, 6c and 6d. The filling structure of the foamed resin plate 6 includes The surface located on the leg member and at least the surface in contact with the concrete is continuous and in close contact with the T-shaped steel. At least one pair of the leg members is used, and the leg members are in close contact with the T-shaped steel on the bottom steel plate. The space 7 is provided between the leg members.
本発明の脚部材６ａ及び脚部材６ｅとは、支持部材の６ｂ，６ｃ，６ｄと、その上に打設するコンクリートとを支持するとともに、必要に応じて切断可能な部材である。該脚部材は、少なくとも一対用い、かつそれら脚部材は底鋼板上でＴ形鋼と密着して充填されるものであり、それら脚部材間には空間部７が形成されている。具体的には、図１に示すように脚部材６ａと脚部材６ｂとを一対として用い、それら脚部材を底鋼板２上でＴ形鋼に密着するように充填されるものであり、脚部材６ａと脚部材６ｂとの間には空間部７が形成されている。尚、同形状の脚部材を用いることで、支持部材やその上のコンクリートを支持し易くなる。 The leg member 6a and the leg member 6e of the present invention are members that support the supporting members 6b, 6c, and 6d and the concrete placed thereon and can be cut as necessary. At least one pair of the leg members is used, and the leg members are filled in close contact with the T-shaped steel on the bottom steel plate, and a space portion 7 is formed between the leg members. Specifically, as shown in FIG. 1, the leg member 6 a and the leg member 6 b are used as a pair, and the leg members are filled so as to be in close contact with the T-shaped steel on the bottom steel plate 2. A space 7 is formed between 6a and the leg member 6b. In addition, it becomes easy to support a supporting member and the concrete on it by using the leg member of the same shape.
また、例えばＴ形鋼１のウエブ１ｂの高さが短くなった場合には、脚部材の下部を該ウエブ１ｂの高さに合わせて切断するだけで対応できるので、従来のようにＴ形鋼間と底鋼板とで形成された空間に隙間なく充填されていた発泡樹脂板の下部全体を切断するような手間と時間が掛からない。 Further, for example, when the height of the web 1b of the T-section steel 1 is shortened, it can be dealt with by simply cutting the lower part of the leg member in accordance with the height of the web 1b. It does not take time and effort to cut the entire lower part of the foamed resin plate that is filled in the space formed by the space and the bottom steel plate without any gap.
また、図示しないが底鋼板は、長さ方向或いは幅方向において複数連結するものであり、その際に別部材の連結板を底鋼板同士が所定位置よりずれないよう底鋼板上に固定する。その連結板は、Ｔ形鋼間の略中央の位置であって底鋼板上に形成されるので、従来のようにＴ形鋼間と底鋼板とで形成された空間に隙間なく発泡樹脂板を充填する場合、その連結板が底鋼板上に突出しているので、その突出部を計算して該発泡樹脂板を切断する必要があったが、実施例１のように脚部材６ａと脚部材６ｅとの間（Ｔ形鋼間の略中央部の位置であって底鋼板上）に空間部７を有する構造であるので、そのような手間を省くことが可能である。また、該空間部７を有することにより、従来よりも発泡樹脂板の使用量を削減できたので、軽量化と経済性に優れた合成床版橋を提供することができる。 Although not shown, a plurality of bottom steel plates are connected in the length direction or width direction, and at that time, connecting plates of different members are fixed on the bottom steel plates so that the bottom steel plates do not deviate from a predetermined position. Since the connecting plate is formed at the substantially central position between the T-shaped steels and on the bottom steel plate, the foamed resin plate is not formed in the space formed between the T-shaped steels and the bottom steel plate as in the prior art. In the case of filling, since the connecting plate protrudes on the bottom steel plate, it is necessary to calculate the protruding portion and cut the foamed resin plate, but the leg member 6a and the leg member 6e as in the first embodiment. (The position of the substantially central portion between the T-shaped steels and on the bottom steel plate) has the space portion 7, so that such labor can be saved. Further, since the space portion 7 is used, the amount of the foamed resin plate used can be reduced as compared with the conventional art, so that a synthetic floor slab bridge excellent in weight reduction and economy can be provided.
同様に、図示しないがＴ形鋼も長さ方向において複数連結するものであり、その際に別部材の連結板をＴ形鋼同士が所定位置よりずれないようＴ形鋼上に固定する。この際には、必要に応じて発泡樹脂板を切断して対応できる。 Similarly, although not shown, a plurality of T-shaped steels are connected in the length direction, and at that time, connecting plates as separate members are fixed on the T-shaped steel so that the T-shaped steels do not deviate from a predetermined position. In this case, the foamed resin plate can be cut as necessary.
本発明の支持部材の６ｂ，６ｃ，６ｄは、コンクリート５を支持する部材であるとともに、コンクリート５の打設時にコンクリートが下方へ流出しない構造が採用されている。具体的には、Ｔ形鋼と６ｂ（及び６ｄ）とが隙間なく密着されるので、Ｔ形鋼と支持部材６ｂ（及び６ｄ）との間からコンクリートが流出するのを防止できる。さらに、６ｂ（及び６ｄ）と６ｃとの表面（コンクリートと接触する面）が連続しているので、６ｂ（及び６ｄ）と６ｃとの間からコンクリートが流出するのを防止できる。その結果、前記空間部７等に余分なコンクリートが流出するのを防止できるので、合成床版橋の軽量化を維持できる。 The support members 6b, 6c, and 6d of the present invention are members that support the concrete 5, and a structure in which the concrete does not flow downward when the concrete 5 is placed is employed. Specifically, since the T-shaped steel and 6b (and 6d) are in close contact with each other without any gap, it is possible to prevent the concrete from flowing out between the T-shaped steel and the support member 6b (and 6d). Furthermore, since the surfaces of 6b (and 6d) and 6c (surfaces in contact with concrete) are continuous, it is possible to prevent the concrete from flowing out between 6b (and 6d) and 6c. As a result, it is possible to prevent excess concrete from flowing into the space portion 7 and the like, so that the weight reduction of the composite slab bridge can be maintained.
また、本発明の支持部材は、施工性の観点から複数の部材からなるものが好ましいが、コンクリートを支持できることと、コンクリートが支持部材よりも下方へ流出するのを防止できるものであれば、一つの部材からなるものであってもよい。 Further, the support member of the present invention is preferably composed of a plurality of members from the viewpoint of workability. However, if the support member can support concrete and can prevent the concrete from flowing out below the support member, the support member may be one. It may consist of two members.
第４図に示すものは、本発明の第２実施例であって、発泡樹脂板の充填構造以外は実施例１と同様の合成床版橋を構成するものである。 FIG. 4 shows a second embodiment of the present invention, which constitutes the same composite floor slab bridge as that of the first embodiment except for the foamed resin board filling structure.
第４図に示すように発泡樹脂板６は、脚部材の６ｆ及び６ｊと、支持部材の６ｇ及び６ｈ及び６ｉとから構成されており、その発泡樹脂板６の充填構造は、該支持部材が脚部材の上に位置し、かつ少なくともコンクリートと接触する面が連続するとともにＴ形鋼と密着し、該脚部材は、少なくとも一対用いられ、かつそれら脚部材は底鋼板上でＴ形鋼と密着し、それら脚部材間に空間部７を有するものである。 As shown in FIG. 4, the foamed resin plate 6 is composed of leg members 6f and 6j, and support members 6g, 6h and 6i. The filling structure of the foamed resin plate 6 includes The surface located on the leg member and at least the surface in contact with the concrete is continuous and in close contact with the T-shaped steel. At least one pair of the leg members is used, and the leg members are in close contact with the T-shaped steel on the bottom steel plate. The space 7 is provided between the leg members.
本発明の脚部材６ｆび脚部材６ｊとは、支持部材の６ｇ及び６ｈ及び６ｉと、その上に打設するコンクリートとを支持するとともに、必要に応じて切断可能な部材である。該脚部材は、脚部材を少なくとも一対用いるものであり、かつそれら脚部材は底鋼板上でＴ形鋼と密着して充填されるものであり、それら脚部材間に空間部７が形成されている。具体的には、図４に示すように脚部材６ｆと脚部材６ｊとを一対とし、それら脚部材を底鋼板２上でＴ形鋼に密着するように充填され、脚部材６ａと脚部材６ｂとの間には空間部７が形成されている。尚、同形状の脚部材を用いることで、支持部材やその上のコンクリートを支持し易くなる。 The leg member 6f and the leg member 6j of the present invention are members that support the supporting members 6g, 6h, and 6i and the concrete placed thereon and can be cut as necessary. The leg members use at least a pair of leg members, and the leg members are filled in close contact with the T-shaped steel on the bottom steel plate, and a space 7 is formed between the leg members. Yes. Specifically, as shown in FIG. 4, a leg member 6f and a leg member 6j are paired, and the leg members are filled in close contact with the T-shaped steel on the bottom steel plate 2, and the leg member 6a and the leg member 6b are filled. A space 7 is formed between the two. In addition, it becomes easy to support a supporting member and the concrete on it by using the leg member of the same shape.
また、例えばＴ形鋼１のウエブ１ｂの高さが短くなった場合には、脚部材の下部を該ウエブ１ｂの高さに合わせて切断するだけで対応できるので、従来のようにＴ形鋼間と底鋼板とで形成された空間に隙間なく充填されていた発泡樹脂板の下部全体を切断するような手間と時間が掛からない。 Further, for example, when the height of the web 1b of the T-section steel 1 is shortened, it can be dealt with by simply cutting the lower part of the leg member in accordance with the height of the web 1b. It does not take time and effort to cut the entire lower part of the foamed resin plate that is filled in the space formed by the space and the bottom steel plate without any gap.
また、図示しないが例えば底鋼板は、長さ方向或いは幅方向において複数連結されるものであり、その際に別部材の連結板を底鋼板が所定位置よりずれないように底鋼板上に固定する。その連結板は、Ｔ形鋼間との略中央の位置であって底鋼板上に形成されるので、従来のようにＴ形鋼間と底鋼板とで形成された空間に隙間なく発泡樹脂板を充填する場合、その連結板が底鋼板上に突出しているので、その突出部を計算して該発泡樹脂板を切断する必要があったが、実施例２のように脚部材６ｆと脚部材６ｊとの間（Ｔ形鋼間の略中央部の位置であって底鋼板上）に空間部７を有する構造であるので、そのような手間を省くことが可能である。また、該空間部７を有することにより、従来よりも発泡樹脂板の使用量を削減できたので、軽量化と経済性に優れた合成床版橋を提供することができる。 Although not shown, for example, a plurality of bottom steel plates are connected in the length direction or width direction, and at that time, a connecting plate of another member is fixed on the bottom steel plate so that the bottom steel plate does not deviate from a predetermined position. . Since the connecting plate is formed at the substantially central position between the T-shaped steels and on the bottom steel plate, the foamed resin plate has no gap in the space formed between the T-shaped steel and the bottom steel plate as in the prior art. Since the connecting plate protrudes on the bottom steel plate, it is necessary to calculate the protruding portion and cut the foamed resin plate. However, as in Example 2, the leg member 6f and the leg member Since this is a structure having the space portion 7 between 6j (the position of the substantially central portion between the T-shaped steels and on the bottom steel plate), it is possible to save such trouble. Further, since the space portion 7 is used, the amount of the foamed resin plate used can be reduced as compared with the conventional art, so that a synthetic floor slab bridge excellent in weight reduction and economy can be provided.
本発明の支持部材の６ｇ，６ｈ，６ｉは、コンクリート５を支持する部材であるとともに、コンクリート５の打設時にコンクリートが下方へ流出しない構造が採用されている。具体的にはＴ形鋼と６ｇ（及び６ｉ）とが隙間なく充填されているので、Ｔ形鋼と支持部材６ｇ（及び６ｉ）との間からコンクリートが流出するのを防ぐことができる。さらに、６ｇ（及び６ｉ）と６ｈとの表面（コンクリートと接触する面）が連続しているので、６ｇ（及び６ｉ）と６ｃとの間からコンクリートが流出するの防ぐことができる。その結果、合成床版橋の軽量化を維持することができる。 The support members 6g, 6h, 6i of the present invention are members that support the concrete 5, and a structure in which the concrete does not flow downward when the concrete 5 is placed is employed. Specifically, since T-shaped steel and 6g (and 6i) are filled without a gap, it is possible to prevent the concrete from flowing out between the T-shaped steel and the supporting member 6g (and 6i). Furthermore, since the surfaces of 6g (and 6i) and 6h (surfaces in contact with concrete) are continuous, it is possible to prevent the concrete from flowing out between 6g (and 6i) and 6c. As a result, the weight reduction of the composite floor slab bridge can be maintained.
第５図に示すものは、本発明の第３実施例であって、発泡樹脂板の充填構造以外は実施例１と同様の合成床版橋を構成するものである。 FIG. 5 shows a third embodiment of the present invention, which constitutes the same composite floor slab bridge as that of the first embodiment except for the foamed resin board filling structure.
第５図に示すように発泡樹脂板６は、脚部材の６ｋ，６ｌ，６ｐ，６ｑと、支持部材の６ｍ，６ｎ，６ｏとから構成されており、発泡樹脂板６の充填構造は、該支持部材が脚部材の上に位置し、かつ少なくともコンクリートと接触する面が連続するとともにＴ形鋼と密着するものであり、該脚部材は、脚部材を少なくとも一対用い、かつそれら脚部材は底鋼板上でＴ形鋼と密着するものであり、それら脚部材間に空間部７を有するものである。 As shown in FIG. 5, the foamed resin plate 6 is composed of leg members 6k, 6l, 6p, 6q and support members 6m, 6n, 6o. The support member is positioned on the leg member, and at least the surface in contact with the concrete is continuous and in close contact with the T-shaped steel. The leg member uses at least a pair of leg members, and the leg members are bottoms. It is in close contact with the T-shaped steel on the steel plate, and has a space 7 between the leg members.
本発明の脚部材６k(及び６ｌ)と脚部材６p（及び６ｑ）とは、支持部材の６ｍ，６ｎ，６ｏと、その上に打設するコンクリートとを支持するとともに、必要に応じて切断可能な部材である。該脚部材は、少なくとも一対用いるものであり、かつそれら脚部材は底鋼板上でＴ形鋼と密着するように充填されるものであり、該脚部材間に空間部７が形成されている。具体的には、図５に示すように脚部材６k(及び６ｌ)と脚部材６p（及び６ｑ）とを一対として用い、それら脚部材を底鋼板２上でＴ形鋼に密着するように充填され、脚部材６k(及び６ｌ)と脚部材６p（及び６ｑ）との間には空間部７が形成されている。尚、同形状の脚部材を用いることで、支持部材やその上のコンクリートを支持し易くなる。 The leg member 6k (and 6l) and the leg member 6p (and 6q) of the present invention support the supporting members 6m, 6n and 6o and the concrete placed thereon, and can be cut as necessary. It is an important member. At least a pair of the leg members are used, and the leg members are filled so as to be in close contact with the T-shaped steel on the bottom steel plate, and a space portion 7 is formed between the leg members. Specifically, as shown in FIG. 5, the leg members 6k (and 6l) and the leg members 6p (and 6q) are used as a pair, and the leg members are filled so as to be in close contact with the T-shaped steel on the bottom steel plate 2. A space 7 is formed between the leg member 6k (and 6l) and the leg member 6p (and 6q). In addition, it becomes easy to support a supporting member and the concrete on it by using the leg member of the same shape.
また、例えばＴ形鋼１のウエブ１ｂの高さが短くなった場合には、その脚部材の下部を該ウエブ１ｂの高さに合わせて切断するだけで対応できるので、Ｔ形鋼間と底鋼板とで形成された空間に隙間なく充填されていた発泡樹脂板の下部全体を切断するような手間と時間が掛からない。 For example, when the height of the web 1b of the T-section steel 1 is shortened, it can be dealt with by simply cutting the lower part of the leg member in accordance with the height of the web 1b. It does not take time and effort to cut the entire lower part of the foamed resin plate that has been filled in the space formed by the steel plate without any gap.
また、図示しないが例えば底鋼板は、長さ方向或いは幅方向において複数連結されるものであり、その際に別部材の連結板を底鋼板が所定位置よりずれないように底鋼板上に固定する。その連結板は、Ｔ形鋼間との略中央の位置であって底鋼板上に形成されるので、従来のようにＴ形鋼間と底鋼板とで形成された空間に隙間なく発泡樹脂板を充填する場合、その連結板が底鋼板上に突出しているので、その突出部を計算して該発泡樹脂板を切断する必要があったが、実施例３のように脚部材６ｋ（及び６ｌ）と脚部材６ｐ（及び６ｑ）との間に空間部７を有する構造であれば、そのような手間を省くことが可能である。また、該空間部７を有することにより、従来よりも発泡樹脂板の量を削減できたので、軽量化と経済性に優れた合成床版橋を提供することができる。 Although not shown, for example, a plurality of bottom steel plates are connected in the length direction or width direction, and at that time, a connecting plate of another member is fixed on the bottom steel plate so that the bottom steel plate does not deviate from a predetermined position. . Since the connecting plate is formed at the substantially central position between the T-shaped steels and on the bottom steel plate, the foamed resin plate has no gap in the space formed between the T-shaped steel and the bottom steel plate as in the prior art. Since the connecting plate protrudes on the bottom steel plate, it is necessary to calculate the protruding portion and cut the foamed resin plate. However, as in Example 3, the leg members 6k (and 6l ) And the leg member 6p (and 6q), it is possible to save such trouble. Moreover, since the amount of the foamed resin plate can be reduced as compared with the conventional space portion 7, a synthetic floor slab bridge excellent in weight reduction and economy can be provided.
本発明の支持部材の６ｍ，６ｎ，６ｏは、コンクリート５を支持する部材であるとともに、コンクリート５の打設時にコンクリートが下方へ流出しない構造が採用されている。具体的にはＴ形鋼と６ｍ（及び６ｏ）とが隙間なく充填されているので、支持部材６ｍ（及び６ｏ）とＴ形鋼との間からコンクリートが流出するのを防ぐことができる。また、６ｍ（及び６ｏ）と６ｎとの表面（コンクリートと接触する面）が連続しているので、６ｍ（及び６ｏ）と６ｎとの間からコンクリートが流出するの防ぐことができる。その結果、合成床版橋の軽量化を維持することができる。 The support members 6m, 6n, and 6o of the present invention are members that support the concrete 5, and a structure in which the concrete does not flow downward when the concrete 5 is placed is employed. Specifically, since T-shaped steel and 6m (and 6o) are filled without a gap, it is possible to prevent the concrete from flowing out between the supporting member 6m (and 6o) and the T-shaped steel. Moreover, since the surface (surface which contacts concrete) of 6m (and 6o) and 6n is continuing, it can prevent that concrete flows out from between 6m (and 6o) and 6n. As a result, the weight reduction of the composite floor slab bridge can be maintained.
第６図に示すものは、本発明の第４実施例であって、発泡樹脂板の充填構造以外は実施例１と同様の合成床版橋を構成するものである。 FIG. 6 shows a fourth embodiment of the present invention, which constitutes the same composite floor slab bridge as that of the first embodiment except for the foamed resin board filling structure.
第６図に示すように発泡樹脂板６は、脚部材の６ｒ，６ｖと、支持部材の６ｓ，６ｔ，６ｕとから構成されており、発泡樹脂板６の充填構造は、該支持部材が脚部材の上に位置し、かつ少なくともコンクリートと接触する面が連続するとともにＴ形鋼と密着するものであり、該脚部材は、脚部材を少なくとも一対用い、かつそれら脚部材は底鋼板上でＴ形鋼と密着するものであり、それら脚部材間に空間部７を有するものである。 As shown in FIG. 6, the foamed resin plate 6 is composed of leg members 6r and 6v and support members 6s, 6t and 6u. It is located on the member, and at least a surface in contact with the concrete is continuous and in close contact with the T-shaped steel. The leg member uses at least one pair of leg members, and these leg members are formed on the bottom steel plate with T It is in close contact with the shape steel and has a space 7 between the leg members.
本発明の脚部材６ｒと脚部材６ｖとは、支持部材の６ｓ，６ｔ，６ｕと、その上に打設するコンクリートとを支持するとともに、必要に応じて切断可能な部材である。該脚部材は、少なくとも一対用いるものであり、かつそれら脚部材は底鋼板上でＴ形鋼と密着するように充填されるものであり、該脚部材間に空間部７が形成されている。具体的には、図６に示すように脚部材６ｒと脚部材６ｖとを一対として用い、それら脚部材を底鋼板２上でＴ形鋼に密着するように充填され、脚部材６ｒと脚部材６ｖとの間には空間部７が形成されている。尚、同形状の脚部材を用いることで、支持部材やその上のコンクリートを支持し易くなる。 The leg member 6r and the leg member 6v of the present invention are members that support the supporting members 6s, 6t, and 6u and the concrete to be placed thereon and can be cut as necessary. At least a pair of the leg members are used, and the leg members are filled so as to be in close contact with the T-shaped steel on the bottom steel plate, and a space portion 7 is formed between the leg members. Specifically, as shown in FIG. 6, the leg member 6r and the leg member 6v are used as a pair, and the leg members 6r and the leg member are filled so as to be in close contact with the T-shaped steel on the bottom steel plate 2. A space 7 is formed between 6v. In addition, it becomes easy to support a supporting member and the concrete on it by using the leg member of the same shape.
また、例えばＴ形鋼１のウエブ１ｂの高さが短くなった場合には、その脚部材の下部を該ウエブ１ｂの高さに合わせて切断するだけで対応できるので、Ｔ形鋼間と底鋼板とで形成された空間に隙間なく充填されていた発泡樹脂板の下部全体を切断するような手間と時間が掛からない。 For example, when the height of the web 1b of the T-section steel 1 is shortened, it can be dealt with by simply cutting the lower part of the leg member in accordance with the height of the web 1b. It does not take time and effort to cut the entire lower part of the foamed resin plate that has been filled in the space formed by the steel plate without any gap.
また、図示しないが例えば底鋼板は、長さ方向或いは幅方向において複数連結されるものであり、その際に別部材の連結板を底鋼板が所定位置よりずれないように底鋼板上に固定する。その連結板は、Ｔ形鋼間との略中央の位置であって底鋼板上に形成されるので、従来のようにＴ形鋼間と底鋼板とで形成された空間に隙間なく発泡樹脂板を充填する場合、その連結板が底鋼板上に突出しているので、その突出部を計算して該発泡樹脂板を切断する必要があったが、実施例４のように脚部材６ｒと脚部材６ｖとの間に空間部７を有する構造であれば、そのような手間を省くことが可能である。また、該空間部７を有することにより、従来よりも発泡樹脂板の量を削減できたので、軽量化と経済性に優れた合成床版橋を提供することができる。 Although not shown, for example, a plurality of bottom steel plates are connected in the length direction or width direction, and at that time, a connecting plate of another member is fixed on the bottom steel plate so that the bottom steel plate does not deviate from a predetermined position. . Since the connecting plate is formed at the substantially central position between the T-shaped steels and on the bottom steel plate, the foamed resin plate has no gap in the space formed between the T-shaped steel and the bottom steel plate as in the prior art. Since the connecting plate protrudes on the bottom steel plate, it is necessary to calculate the protruding portion and cut the foamed resin plate. However, as in Example 4, the leg member 6r and the leg member If it is a structure which has the space part 7 between 6v, it is possible to save such trouble. Moreover, since the amount of the foamed resin plate can be reduced as compared with the conventional space portion 7, a synthetic floor slab bridge excellent in weight reduction and economy can be provided.
本発明の支持部材の６ｓ，６ｔ，６ｕは、コンクリート５を支持する部材であるとともに、コンクリート５の打設時にコンクリートが下方へ流出しない構造が採用されている。具体的にはＴ形鋼と６ｓ（及び６ｕ）とが隙間なく充填されているので、支持部材６ｓ（及び６ｕ）とＴ形鋼との間からコンクリートが流出するのを防ぐことができる。また、６ｓ（及び６ｕ）と６ｔとの表面（コンクリートと接触する面）が連続しているので、６ｓ（及び６ｕ）と６ｔとの間からコンクリートが流出するの防ぐことができる。その結果、合成床版橋の軽量化を維持することができる。 The support members 6s, 6t, and 6u of the present invention are members that support the concrete 5, and a structure in which the concrete does not flow downward when the concrete 5 is placed is employed. Specifically, since the T-section steel and 6s (and 6u) are filled without a gap, it is possible to prevent the concrete from flowing out between the support member 6s (and 6u) and the T-section steel. Moreover, since the surface (surface which contacts concrete) of 6s (and 6u) and 6t is continuing, it can prevent that concrete flows out from between 6s (and 6u) and 6t. As a result, the weight reduction of the composite floor slab bridge can be maintained.
なお、前記下配力鉄筋４として、所要長さの連続台形波状に折曲げ形成したものを用いてもよいが、折曲げ形成加工上、少なくとも二山の台形波状に折曲げ形成したものを用いた方が好ましい。 In addition, as the said lower distribution reinforcement bar 4, you may use what was bent and formed in the continuous trapezoidal wave shape of required length, but for the bending formation process, what was bent and formed in the trapezoidal wave shape of at least two peaks is used. Is better.
また下配力鉄筋４相互の重ね継手接合手段としては、特に下方水平部4b相互の重ね継手接合の場合、鉄筋副木と共に、ワイヤーにて結束してもよい。 Further, as the lap joint joining means between the lower reinforcing steel bars 4, particularly in the case of the lap joint joining between the lower horizontal portions 4 b, they may be bundled together with the reinforcing bar splint by a wire.
さらに、前記上配力鉄筋３、下配力鉄筋４を、それぞれ異形鉄筋としてもよい。 Further, the upper distribution reinforcing bar 3 and the lower distribution reinforcing bar 4 may be deformed reinforcing bars, respectively.
また、前記コンクリート５を、膨張コンクリートとしてもよい。 The concrete 5 may be expanded concrete.
１ Ｔ形鋼
１ａ 上部フランジ
１ｂ ウエブ
２ 底鋼板
３ 上配力鉄筋
４ 下配力鉄筋
４ａ 上方水平部
４ｂ 下方水平部
５ コンクリート
６ 発泡樹脂板
６ａ，６ｅ，６ｆ，６ｊ，６ｋ，６ｌ，６ｐ，６ｑ，６ｒ，６ｖ 脚部材
６ｂ，６ｃ，６ｄ，６ｇ，６ｈ，６ｉ，６ｍ，６ｎ，６ｏ，６ｓ，６ｔ，６ｕ 支持部材
７ 空間部
DESCRIPTION OF SYMBOLS 1 T-section steel 1a Top flange 1b Web 2 Bottom steel plate 3 Upper distribution reinforcement 4 Lower distribution reinforcement 4a Upper horizontal part 4b Lower horizontal part 5 Concrete 6 Foamed resin board 6a, 6e, 6f, 6j, 6k, 6l, 6p, 6q, 6r, 6v Leg member 6b, 6c, 6d, 6g, 6h, 6i, 6m, 6n, 6o, 6s, 6t, 6u Support member 7 Space
Claims (1)
発泡樹脂板の充填構造は、コンクリート打設時にコンクリートが発泡樹脂板よりも下方へ流出しないようにするとともに、該コンクリートを支持する支持部材と、該支持部材とコンクリートとを支持するとともに、切断可能な脚部材とを有するものであり、該支持部材は、脚部材の上に位置し、少なくともコンクリートと接触する面が連続するとともにＴ形鋼と密着し、該脚部材は、少なくとも一対で用いられ、かつそれら脚部材は底鋼板上でＴ形鋼と密着し、それら脚部材間に空間部を有することを特徴とする合成床版橋。
T-shaped steels with top flanges are arranged in parallel at the required intervals, the bottom steel plate is welded between the lower end surfaces of each T-shaped steel web, and 1/2 to 1/3 of the height of the T-shaped steel web Each upper horizontal part of the lower strength reinforcing bar bent so as to have a certain height is placed orthogonally on the upper flange upper surface of each T-shaped steel, and slightly above the upper flange upper surface of each T-shaped steel. The upper reinforcing steel bars are arranged orthogonally to each T-shaped steel, and the foamed resin plate is filled from the upper surface of the bottom steel plate to a position slightly below each lower horizontal portion of the lower steel reinforcing steel bars. It is a composite floor slab bridge formed by placing concrete from a slightly lower position of each lower horizontal part of a reinforcing bar to a slightly higher position of the upper distribution reinforcing bar,
The filling structure of the foamed resin plate prevents the concrete from flowing out below the foamed resin plate when pouring the concrete, supports the concrete, supports the concrete and the concrete, and cuts the concrete. The support member is located on the leg member, has at least a continuous surface in contact with the concrete and is in close contact with the T-shaped steel, and the leg members are used in at least a pair. The composite floor slab bridge is characterized in that the leg members are in close contact with the T-shaped steel on the bottom steel plate and have a space between the leg members.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005142054A JP4500209B2 (en) | 2005-05-16 | 2005-05-16 | Synthetic floor slab bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005142054A JP4500209B2 (en) | 2005-05-16 | 2005-05-16 | Synthetic floor slab bridge |
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| Publication Number | Publication Date |
|---|---|
| JP2006316557A JP2006316557A (en) | 2006-11-24 |
| JP4500209B2 true JP4500209B2 (en) | 2010-07-14 |
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| JP2005142054A Active JP4500209B2 (en) | 2005-05-16 | 2005-05-16 | Synthetic floor slab bridge |
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| JP5090306B2 (en) * | 2008-09-26 | 2012-12-05 | 宮地エンジニアリング株式会社 | Synthetic floor slab bridge and its construction method |
| JP5637752B2 (en) * | 2010-07-01 | 2014-12-10 | アキレス株式会社 | Embedded formwork for composite floor slab bridges |
| JP2012062642A (en) * | 2010-09-14 | 2012-03-29 | Achilles Corp | Embedded form structure for composite floor slab bridge |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63176506A (en) * | 1987-01-12 | 1988-07-20 | 川崎重工業株式会社 | Execution of synthetic floor panel bridge composed of steel and concrete |
| JPH0254810U (en) * | 1988-10-06 | 1990-04-20 | ||
| JPH03125808U (en) * | 1990-03-12 | 1991-12-19 | ||
| JPH0437612U (en) * | 1990-07-24 | 1992-03-30 | ||
| JPH0470315U (en) * | 1990-10-30 | 1992-06-22 | ||
| JPH0470314U (en) * | 1990-10-30 | 1992-06-22 | ||
| JPH0681319A (en) * | 1992-07-15 | 1994-03-22 | Miyaji Tekkosho:Kk | Synthetic floor board bridge and construction method thereof |
| JP2003119724A (en) * | 2001-10-12 | 2003-04-23 | Kawada Construction Co Ltd | Method for constructing floor slab of pre-beam composite girder |
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- 2005-05-16 JP JP2005142054A patent/JP4500209B2/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63176506A (en) * | 1987-01-12 | 1988-07-20 | 川崎重工業株式会社 | Execution of synthetic floor panel bridge composed of steel and concrete |
| JPH0254810U (en) * | 1988-10-06 | 1990-04-20 | ||
| JPH03125808U (en) * | 1990-03-12 | 1991-12-19 | ||
| JPH0437612U (en) * | 1990-07-24 | 1992-03-30 | ||
| JPH0470315U (en) * | 1990-10-30 | 1992-06-22 | ||
| JPH0470314U (en) * | 1990-10-30 | 1992-06-22 | ||
| JPH0681319A (en) * | 1992-07-15 | 1994-03-22 | Miyaji Tekkosho:Kk | Synthetic floor board bridge and construction method thereof |
| JP2003119724A (en) * | 2001-10-12 | 2003-04-23 | Kawada Construction Co Ltd | Method for constructing floor slab of pre-beam composite girder |
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| JP2006316557A (en) | 2006-11-24 |
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