JP4590382B2 - Anti-corrosion waterproofing material for steel expansion joints - Google Patents
Anti-corrosion waterproofing material for steel expansion joints Download PDFInfo
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- JP4590382B2 JP4590382B2 JP2006238518A JP2006238518A JP4590382B2 JP 4590382 B2 JP4590382 B2 JP 4590382B2 JP 2006238518 A JP2006238518 A JP 2006238518A JP 2006238518 A JP2006238518 A JP 2006238518A JP 4590382 B2 JP4590382 B2 JP 4590382B2
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- 229910000831 Steel Inorganic materials 0.000 title claims description 49
- 239000010959 steel Substances 0.000 title claims description 49
- 239000000463 material Substances 0.000 title claims description 47
- 238000005260 corrosion Methods 0.000 title claims description 28
- 238000004078 waterproofing Methods 0.000 title claims description 14
- 230000007797 corrosion Effects 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 20
- 230000008602 contraction Effects 0.000 claims description 9
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000011241 protective layer Substances 0.000 description 9
- 239000006260 foam Substances 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
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Description
本発明は、橋梁や建築物等において使用される鋼製伸縮継手の遊間からの雨水等の落下を防止し、鋼製伸縮継手内部のウエブプレート端面及びフェイスプレート下面の腐食を防止するための鋼製伸縮継手用防食性止水材に関するものである。 The present invention is a steel for preventing rainwater and the like from dropping from the gap between steel expansion joints used in bridges and buildings, etc., and preventing corrosion of the web plate end face and the face plate lower surface inside the steel expansion joint. The present invention relates to a corrosion-resistant waterproofing material for expansion joints.
橋梁等では、温度変化に起因する膨張や収縮が生じるため、一定間隔毎に鋼製伸縮継手が設けられているものが数多くある。鋼製伸縮継手は、一対の対向するウエブプレート及び一対の対向するフェイスプレートを有している。各ウエブプレートは、間隔を保って相対する橋桁上に鉛直に支承される。フェイスプレートは、互いに隙間を保って、ウエブプレートの上端に水平に固定される。そして、この鋼製伸縮継手の遊間から雨水が漏水して落下して橋桁端部や橋桁支承部を腐食するのを防止する必要がある。 Many bridges and the like are provided with steel expansion joints at regular intervals because expansion and contraction due to temperature changes occur. The steel expansion joint has a pair of opposed web plates and a pair of opposed face plates. Each web plate is supported vertically on the opposite bridge girder at a distance. The face plates are horizontally fixed to the upper end of the web plate with a gap between each other. Then, it is necessary to prevent the rainwater from leaking and falling from the gap between the steel expansion joints to corrode the end portion of the bridge girder and the bridge girder support portion.
このために、特許文献１（特許第２６８９０７９号公報）では、対向するウエブプレートの遊間（目地）を塞ぐ鋼製伸縮継手用止水材を取り付けて防水している。 For this reason, in Patent Document 1 (Japanese Patent No. 2689079), a waterproofing material for a steel expansion joint that closes a gap (joint) between opposing web plates is attached and waterproofed.
図２に、この鋼製伸縮継手用止水材を説明する斜視図を示し、鋼製伸縮継手に配置した状態を示す。この鋼製伸縮継手用止水材１１は、一対のウエブプレート２ａ，２ｂと一対のフェイスプレート３ａ，３ｂとを有する鋼製伸縮継手４のウエブプレート２ａ，２ｂの遊間に設けられている。
In FIG. 2, the perspective view explaining the water stop material for this steel expansion joint is shown, and the state arrange | positioned to the steel expansion joint is shown. The steel
鋼製伸縮継手用止水材１１は、上側の保護層５、中程の止水層６及び下側の支持層７を順に積み重ねて接着一体化してなり、前記支持層７は、一対の縦長の独立気泡フォーム部と、前記独立気泡フォーム部相互間に固着一体化された連続気泡フォーム製の伸縮部とから構成されており、両外側面を直接又は他部材を介して一対のウエブプレート２ａ,２ｂの端面に接着して設置される。従って、この鋼製伸縮継手用止水材１では、主として支持層７の伸縮部等の体積変化により、対向するウエブプレート２ａ,２ｂ間の変位を吸収し、また、止水層６及び独立気泡フォーム部により止水性を得て、鋼製伸縮継手の遊間からの雨水等の落下を防止するものである。
The
また、特許文献２（特開２００２−１５５５８１号公報）及び特許文献３（特開２００６−２９０６９号公報）には、前記特許文献１に係る発明をさらに改良する試みがなされている。特許文献２では、支持層の伸縮部が縦方向に殆ど撓まない工夫がなされ、特許文献３では、保護層が水を含浸して凍結した状態においても、体積変化を容易にして保護層に亀裂や破壊を生ずることなく遊間の伸縮を許容する工夫がなされている。
Further, Patent Document 2 (Japanese Patent Laid-Open No. 2002-155581) and Patent Document 3 (Japanese Patent Laid-Open No. 2006-29069) attempt to further improve the invention according to
しかしながら、特許文献１〜３の鋼製伸縮継手用止水材では、鋼製伸縮継手の遊間から雨水が流入した場合、保護層に水が含浸したり、支持層とウエブプレート端面との接着面の付近が水分を含んだ状態になったり、あるいは凍結防止材を散布する道路においては、塩分を含んだ水が接触するため、ウエブプレート端面及びフェイスプレート下面では湿りやすく腐食が発生する問題があった。そして、腐食が進行して鋼材の板厚が減少すると、交通荷重等により破損して鋼製伸縮継手全体を交換せざるを得なくなり、橋梁等の維持管理のコストが増大するというおそれがあった。
However, in the water-stopping material for steel expansion joints of
従って、本発明の目的は、前記課題を解決するためになされたもので、鋼製伸縮継手の遊間から雨水が流入した場合に止水性を発揮し、しかも鋼製伸縮継手内部のウエブプレート端面及びフェイスプレート下面の腐食を防止できる鋼製伸縮継手用防水性止水材を提供することにある。 Accordingly, an object of the present invention is to solve the above-described problems, and when rainwater flows in from the gap between the steel expansion joints, it exhibits water-stopping properties. An object of the present invention is to provide a waterproof water-proof material for steel expansion joints that can prevent corrosion of the lower surface of the face plate.
本発明者らは、検討の結果、止水材本体に加えて一対の断面形状がＬ字形の防食性薄金属板を配し、前記一対の防食性薄金属板をそれぞれ前記止水材本体の各側面から上面の一部に離間して配置することによって、前記目的が達成し得ることを知見して本発明に至った。 As a result of the study, the inventors have arranged a pair of L-shaped anticorrosion thin metal plates in addition to the waterstop main body, and each of the pair of anticorrosion thin metal plates is the The inventors have found that the above object can be achieved by arranging the respective side surfaces apart from a part of the upper surface, and have reached the present invention.
すなわち、本発明は、一対の対向するウエブプレートと一対の対向するフェイスプレートとを有する鋼製伸縮継手の対向する該ウエブプレートの遊間の両端面に固着して設けられる鋼製伸縮継手用防食性止水材であって、
止水材本体と一対の断面形状がＬ字形の防食性薄金属板とからなり、
前記止水材本体は、遊間全体の伸縮に応じて伸縮可能な支持層と、該支持層の上面に固着一体化された止水層と、該止水層の上面に固着一体化された保護層とを有し、
前記一対の防食性薄金属板は、それぞれ前記止水材本体の各側面から上面の一部に離間して配置され、かつ前記止水材本体の各側面で固着されていることを特徴とする鋼製伸縮継手用防食性止水材を提供するものである。
That is, the present invention relates to a steel expansion joint anticorrosive for a steel expansion joint, which is provided by being fixed to both end surfaces of the opposing web plate of a steel expansion joint having a pair of opposing web plates and a pair of opposing face plates. A waterstop material,
It consists of a waterproof material body and a pair of cross-sectional shape L-shaped anticorrosive thin metal plates,
The water-stop material body includes a support layer that can be expanded and contracted according to the expansion and contraction of the entire gap, a water-stop layer that is fixed and integrated on the upper surface of the support layer, and a protection that is fixed and integrated on the upper surface of the water-stop layer. And having a layer
The pair of anticorrosive thin metal plates are respectively arranged to be spaced apart from each side surface of the water-stopping material main body to a part of the upper surface, and fixed on each side surface of the water-stopping material main body. The present invention provides a corrosion-resistant waterproofing material for steel expansion joints.
本発明に係る前記鋼製伸縮継手用防食性止水材において、前記防食性薄金属板は、前記止水材本体の側面の全部又は一部に固着されている。 In the corrosion-resistant waterproofing material for steel expansion joints according to the present invention, the corrosion-resistant thin metal plate is fixed to all or a part of the side surface of the waterproofing material main body.
本発明に係る前記鋼製伸縮継手用防食性止水材において、前記防食性薄金属板は、亜鉛、アルミニウム、マグネシウム又はそれらの合金からなることが望ましい。 In the corrosion-resistant waterstop for steel expansion joints according to the present invention, the corrosion-resistant thin metal plate is preferably made of zinc, aluminum, magnesium, or an alloy thereof.
本発明に係る鋼製伸縮継手用防食性止水材は、ウエブプレートの遊間の伸縮に対して、止水材本体のみが伸縮による変形で追随することができると共に、防食性を有する薄金属板がウエブプレート端面に固着して、フェイスプレート下面に当接することにより、前記薄金属板による電気防食作用を引き出すことができ、防食が達成できる。 The anti-corrosion water-proof material for steel expansion joints according to the present invention is a thin metal plate having anti-corrosion properties while only the water-stop material body can follow the expansion and contraction of the web plate due to expansion and contraction. By adhering to the end surface of the web plate and coming into contact with the lower surface of the face plate, the anticorrosive action by the thin metal plate can be extracted, and corrosion prevention can be achieved.
このため、本発明に係る鋼製伸縮継手用防食性止水材は、止水性を発揮できると共に、鋼製伸縮継手内部のウエブプレート端面及びフェイスプレート下面の腐食を防止できる。 For this reason, the corrosion-resistant water-proof material for steel expansion joints according to the present invention can exhibit water-stopping properties and can prevent corrosion of the web plate end face and the face plate lower surface inside the steel expansion joint.
以下、本発明を実施するための最良の形態について詳述する。
図１は、本発明に係る鋼製伸縮継手用防食性止水材の一実施形態を示す斜視図であり、鋼製伸縮継手に配置した状態を示す。
Hereinafter, the best mode for carrying out the present invention will be described in detail.
FIG. 1 is a perspective view showing an embodiment of a corrosion-resistant water-proof material for steel expansion joints according to the present invention, and shows a state in which the steel expansion joint is arranged.
図１において、鋼製伸縮継手用防食性止水材１は、鋼製伸縮継手４の対向するウエブプレート２ａ，２ｂの遊間の両端面に固着して設けられている。鋼製伸縮継手４は、一対の対向するウエブプレート２ａ，２ｂと一対の対向するフェイスプレート３ａ，３ｂとを有する。
In FIG. 1, a corrosion-
本発明に係る鋼製伸縮継手用防食性止水材１は、止水材本体と一対の断面形状がＬ字形の防食性薄金属板８ａ，８ｂとからなる
The corrosion-
止水材本体は、遊間全体の伸縮に応じて伸縮可能な支持層７と、該支持層の上面に固着一体化された止水層６と、該止水層の上面に固着一体化された保護層５とを有する。
The water-stop material main body is fixed and integrated to the upper surface of the water-stopping layer, the
これら保護層５、止水層６及び支持層７の材質、形状等の構成は任意であるが、例えば前記した特許文献１に記載された材質等が用いられる。
Although the material, shape, and the like of the
すなわち、保護層５は、連続気泡フォームからなり、止水層６は低弾性のゴムのシート状体からなる。また、支持層７は、伸縮可能な連続気泡フォームとその両側面に位置する一対の独立気泡フォーム層とからなる。また、保護層５は、一部又は全部を独立気泡と連続気泡が混在する独立／連続混在気泡フォーム層としてもよい。
That is, the
一対の防食性薄金属板８ａ，８ｂは、それぞれ前記止水材本体の各側面から上面の一部に離間して配置され、かつ前記止水材本体の各側面で固着されている。図１では、防食性薄金属板８ａ，８ｂは、前記止水材本体の側面の一部に固着されているが、側面の全部に固着されていてもよい。防食性薄金属板８ａ，８ｂは、犠牲陽極作用を有する亜鉛、アルミニウム、マグネシウム又はそれらの合金からなることが望ましい。 The pair of anticorrosive thin metal plates 8a and 8b are respectively arranged to be spaced apart from each side surface of the water-stopping material body to a part of the upper surface, and are fixed to each side surface of the water-stopping material body. In FIG. 1, the anticorrosion thin metal plates 8 a and 8 b are fixed to a part of the side surface of the water blocking material main body, but may be fixed to the entire side surface. The anticorrosive thin metal plates 8a and 8b are preferably made of zinc, aluminum, magnesium or an alloy thereof having a sacrificial anodic action.
図１では、防食性薄金属板８ａ，８ｂは、ウエブプレート２ａ，２ｂ端面に固着され、またフェイスプレート３ａ，３ｂの下面の全部に当接しているが、フェイスプレート３ａ，３ｂの下面の一部に当接してもよい。 In FIG. 1, the anticorrosion thin metal plates 8a and 8b are fixed to the end surfaces of the web plates 2a and 2b and are in contact with all the lower surfaces of the face plates 3a and 3b. You may contact | abut to a part.
本発明では、一対の防食性薄金属板８ａ，８ｂが、それぞれ前記止水材本体の各側面から上面の一部に離間して配置されているので、ウエブプレート端面及びフェイスプレート下面の腐食を防止できる。また、防食性薄金属板８ａ，８ｂは、止水材本体の各側面で固着されているので、ウエブプレート２ａ，２ｂの遊間の伸縮に対して、止水材本体のみが伸縮する。 In the present invention, the pair of anticorrosive thin metal plates 8a and 8b are disposed apart from each side surface of the water-stopping material main body to a part of the upper surface, so that corrosion of the web plate end surface and the face plate lower surface is prevented. Can be prevented. Further, since the anticorrosion thin metal plates 8a and 8b are fixed on the respective side surfaces of the water-stopping material main body, only the water-stopping material main body expands and contracts with respect to expansion and contraction between the web plates 2a and 2b.
本発明に係る鋼製伸縮継手用防食性止水材は、止水性を発揮し、しかも鋼製伸縮継手内部のウエブプレート端面及びフェイスプレート下面の腐食を防止できる。従って、本発明は、橋梁や建築物等に用いられる鋼製伸縮継手の止水材として好適に使用される。 The corrosion-resistant water-proof material for steel expansion joints according to the present invention exhibits water-stopping properties and can prevent corrosion of the web plate end face and the face plate lower surface inside the steel expansion joint. Therefore, this invention is used suitably as a water stop material of the steel expansion joint used for a bridge, a building, etc.
１，１１：鋼製伸縮継手用止水材
２ａ，２ｂ：ウエブプレート
３ａ，３ｂ：フェイスプレート
４：鋼製伸縮継手
５：保護層
６：止水層
７：支持層
８ａ，８ｂ：防食性薄金属板
DESCRIPTION OF
Claims (3)
止水材本体と一対の断面形状がＬ字形の防食性薄金属板とからなり、
前記止水材本体は、遊間全体の伸縮に応じて伸縮可能な支持層と、該支持層の上面に固着一体化された止水層と、該止水層の上面に固着一体化された保護層とを有し、
前記一対の防食性薄金属板は、それぞれ前記止水材本体の各側面から上面の一部に離間して配置され、かつ前記止水材本体の各側面で固着されていることを特徴とする鋼製伸縮継手用防食性止水材。 A steel anti-corrosion waterproofing material for a steel expansion joint provided by being fixed to both end faces of a free space of the opposing web plate of a steel expansion joint having a pair of opposing web plates and a pair of opposing face plates. ,
It consists of a waterproof material body and a pair of cross-sectional shape L-shaped anticorrosive thin metal plates,
The water-stop material body includes a support layer that can be expanded and contracted according to the expansion and contraction of the entire gap, a water-stop layer that is fixed and integrated on the upper surface of the support layer, and a protection that is fixed and integrated on the upper surface of the water-stop layer. And having a layer
The pair of anticorrosive thin metal plates are respectively arranged to be spaced apart from each side surface of the water-stopping material main body to a part of the upper surface, and fixed on each side surface of the water-stopping material main body. Anti-corrosion waterproofing material for steel expansion joints.
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| JP7055551B2 (en) * | 2017-12-04 | 2022-04-18 | 重信 貝沼 | Corrosion prevention structure and corrosion prevention method for telescopic equipment |
| CN111441235B (en) * | 2020-04-02 | 2021-07-06 | 广西北投公路建设投资集团有限公司 | Combined web structure of double-layer corrugated steel web internally filled with concrete |
| KR102357383B1 (en) * | 2021-05-17 | 2022-02-08 | 주식회사 아르코건설 | Expansion joint device for bridge and its construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0417407U (en) * | 1990-05-31 | 1992-02-13 | ||
| JP2003166204A (en) * | 2001-11-30 | 2003-06-13 | Motonosuke Arai | Joint structure of highway bridge |
| JP2003206506A (en) * | 2002-01-15 | 2003-07-25 | Motonosuke Arai | Structure of road bridge joint part |
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| JP2689079B2 (en) * | 1994-06-06 | 1997-12-10 | 旭化工株式会社 | Water-stopping material for playground |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0417407U (en) * | 1990-05-31 | 1992-02-13 | ||
| JP2003166204A (en) * | 2001-11-30 | 2003-06-13 | Motonosuke Arai | Joint structure of highway bridge |
| JP2003206506A (en) * | 2002-01-15 | 2003-07-25 | Motonosuke Arai | Structure of road bridge joint part |
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