JP6342097B1 - Water-stopping steel material and construction method of water-stop wall using the same - Google Patents
Water-stopping steel material and construction method of water-stop wall using the same Download PDFInfo
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- JP6342097B1 JP6342097B1 JP2018042570A JP2018042570A JP6342097B1 JP 6342097 B1 JP6342097 B1 JP 6342097B1 JP 2018042570 A JP2018042570 A JP 2018042570A JP 2018042570 A JP2018042570 A JP 2018042570A JP 6342097 B1 JP6342097 B1 JP 6342097B1
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 324
- 239000010959 steel Substances 0.000 title claims abstract description 324
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- 238000010276 construction Methods 0.000 title claims abstract description 26
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 116
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 111
- 230000000903 blocking effect Effects 0.000 claims description 37
- 239000003566 sealing material Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 10
- 238000013459 approach Methods 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 4
- 238000004078 waterproofing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000014509 gene expression Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000007799 cork Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
【課題】間隔の広狭の補償機能を有し、より堅固な構成の止水壁の建設を可能にする止水鋼材を提供する。【解決手段】Ｈ形鋼の形状の止水鋼材（１）は、フランジ（４）及びウェブ（６）から成るＴ形鋼部分を有する上流側鋼材（２）と、フランジ（５）及びウェブ（７）から成るＴ形鋼部分を有し、ウェブが上流側鋼材のウェブの下流側に重ね合された下流側鋼材（３）と、を備えており、各ウェブは、重ね合わせの量を調節するための長丸穴であって、上流側鋼材及び下流側鋼材を予め定めた最離位置にした場合に、ウェブ同士が重ね合わされている範囲内にある調節用ねじ穴（１２）（１９）をそれぞれ有しており、調節用ねじ穴は、当該ねじ穴を完全に塞ぐシール板（１７）を介してねじ留めされている、ことを特徴とする。これにより、簡易な方法で幅を調節でき、止水することもできる。【選択図】図１There is provided a water-stopping steel material that has a compensation function of wide and narrow intervals and enables construction of a water-stop wall having a more rigid structure. A water-stopping steel material (1) in the shape of an H-shaped steel includes an upstream steel material (2) having a T-shaped steel portion composed of a flange (4) and a web (6), a flange (5) and a web ( 7) having a T-shaped steel portion, the web being overlapped on the downstream side of the web of the upstream steel material, and each web adjusting the amount of overlap Screw holes for adjustment (12) (19) in the range in which the webs are overlapped when the upstream steel material and the downstream steel material are at the predetermined farthest positions. The adjustment screw hole is screwed through a seal plate (17) that completely closes the screw hole. Thereby, the width can be adjusted by a simple method, and water can be stopped. [Selection] Figure 1
Description
本発明は、河川等にある橋脚又は堰、マンホールの中等の整備を行う際に周りからの水の侵入を防いだドライな作業空間を確保するための止水壁を建設する際に用いる止水鋼材、及びこれを用いた止水壁の建設方法に関する。 The present invention provides a water stop used when constructing a water stop wall for securing a dry work space that prevents water from entering when maintaining a bridge pier or a weir in a river, a manhole, etc. The present invention relates to a steel material and a construction method of a water blocking wall using the same.
従来、図１９に示されているように、基礎上に断面コ字状の溝形鋼からなる複数の支柱２０１を溝の部分が向き合うように設け、この溝をガイドとして、壁面パネル２０２を止水状態となるように差し込んでゆく止水壁２００の建設方法が知られている（特許文献１を参照）。 Conventionally, as shown in FIG. 19, a plurality of pillars 201 made of channel steel having a U-shaped cross section are provided on a foundation so that the groove portions face each other, and the wall panel 202 is fixed using the grooves as a guide. A construction method of a water blocking wall 200 that is inserted so as to be in a water state is known (see Patent Document 1).
上記の止水壁は、壁面パネル２０２が水圧で撓む恐れがあり、支柱２０１の間隔を広くとることが難しかった。支柱２０１の間隔を広くするには、壁面パネル２０２の長さだけでなく、厚みを増やして堅固にする必要があり、結果として、壁面パネル２０２が大きく重くなる。大きく重い堅固な部材を現場で長さ調節するのは難しく、建設中に生じる止水壁面同士の間隔、又は、止水壁と川岸に設けられている構造物の間隔の広狭を補償する機能が低下してしまう。 In the water blocking wall, the wall panel 202 may be bent by water pressure, and it is difficult to widen the interval between the columns 201. In order to widen the interval between the columns 201, it is necessary to increase not only the length of the wall surface panel 202 but also to increase its thickness, and as a result, the wall surface panel 202 becomes large and heavy. It is difficult to adjust the length of large, heavy, rigid members on site, and it has a function to compensate for the gap between the still water walls that occur during construction, or the gap between the structures of the water barrier walls and the riverbanks. It will decline.
本発明は、上記従来例の問題を解決するためになされたものであり、上記間隔の広狭の補償機能を有し、堅固な部材を用いた止水壁の建設を可能にする止水鋼材と、これを用いた止水壁の建設方法を提供することを目的とする。 The present invention was made in order to solve the above-described problems of the conventional example, and has a water-stopping steel material that has a compensation function of the above-mentioned distance and enables construction of a water-stop wall using a rigid member. An object of the present invention is to provide a method for constructing a water blocking wall using the same.
上記目的を達成するために本発明は、上流側の水を下流側に流さないようにするＨ形鋼の形状の止水鋼材であって、長板状のフランジと、当該フランジの短手方向中央部分から垂直に設けられている長板状のウェブとで構成されているＴ形鋼部分を有する上流側鋼材と、長板状のフランジと、当該フランジの短手方向中央部分から垂直に設けられている長板状のウェブとで構成されているＴ形鋼部分を有し、前記ウェブが前記上流側鋼材のウェブの下流側に重ね合された下流側鋼材と、を備えており、前記上流側鋼材及び下流側鋼材のウェブは、重ね合わせの量を調節するための長丸穴であって、前記上流側鋼材及び下流側鋼材を予め定めた最離位置にした場合に、前記ウェブ同士が重ね合わされている範囲内にある調節用ねじ穴をそれぞれ有しており、前記予め定めた最離位置は、前記上流側鋼材の調節用ねじ穴と前記下流側鋼材の調節用ねじ穴が重複し、当該調節用ねじ穴をねじが通る範囲で前記上流側鋼材と前記下流側鋼材が最も離間した位置であり、前記調節用ねじ穴は、当該ねじ穴を完全に塞ぐシール板を介してねじ留めされている、ことを特徴とする。 In order to achieve the above object, the present invention is a water-stopping steel material in the shape of an H-shaped steel that prevents upstream water from flowing downstream, and includes a long plate-like flange and a short direction of the flange. An upstream steel member having a T-shaped steel portion composed of a long plate-like web provided vertically from the central portion, a long plate-like flange, and a vertical portion provided from the central portion in the short direction of the flange. And a downstream steel material having a T-shaped steel portion composed of a long plate-shaped web that is overlapped on the downstream side of the web of the upstream steel material, and The webs of the upstream steel material and the downstream steel material are oblong holes for adjusting the amount of superposition, and when the upstream steel material and the downstream steel material are at the predetermined most distant positions, the webs Each adjustment screw hole within the range where the And and the outermost release position a predetermined, the upstream regulatory screw hole of the adjusting screw hole the downstream steel is duplicated steel, the upstream the adjusting screw holes in the range through which the screw The steel material and the downstream steel material are at the most spaced positions, and the adjustment screw hole is screwed through a seal plate that completely closes the screw hole.
また、前記調節用ねじ穴は、上流側鋼材及び下流側鋼材を最接近位置にした場合に、ウェブの重なり合っている部分の短手方向中央位置に、上流側鋼材及び下流側鋼材のウェブを貫通するように設けられている最接近用ねじ穴Ｈ１と、前記最接近用ねじ穴Ｈ１が、前記ウェブが重ね合されている範囲内にある上流側鋼材及び下流側鋼材の最離位置において、上流側鋼材及び下流側鋼材のウェブを貫通するように設けられている最離位置用ねじ穴Ｈ２と、を繋いだ長丸穴であることが好ましい。 Further, the adjustment screw hole penetrates the web of the upstream steel material and the downstream steel material at the center position in the short direction of the overlapping portion of the web when the upstream steel material and the downstream steel material are brought to the closest position. In the most distant position of the upstream steel material and the downstream steel material within the range where the web is overlapped, the closest screw hole H1 and the closest screw hole H1 provided so as to be upstream It is preferable that it is an elongate hole which connected the screw hole H2 for the furthest position provided so that the web of a side steel material and a downstream steel material might be penetrated.
また、前記上流側鋼材及び下流側鋼材のウェブの重なり合う側には、当該ウェブの長手方向に沿って、重なり合うウェブの隙間を通る水を止めるシール材が設けられていることが好ましい。 Moreover, it is preferable that the sealing material which stops the water which passes through the clearance gap between the overlapping webs along the longitudinal direction of the said web is provided in the overlapping side of the web of the said upstream steel material and downstream steel material.
また、前記上流側鋼材及び下流側鋼材の一方の端において、前記フランジの短手方向中央部分から一方の縁までの辺と前記ウェブの辺とで区画される領域に設けられている上板と、前記上流側鋼材及び下流側鋼材の他方の端において、前記フランジの短手方向中央部分から他方の縁までの辺と前記ウェブの辺とで区画される領域に、前記ウェブから、前記下流側鋼材及び上流側鋼材のウェブの厚み以上の間隙を開けて設けられている下板と、を備えており、前記上流側鋼材及び下流側鋼材のフランジの長手方向の長さが同じで、前記上板及び下板をそれぞれ同一面上に並べ、前記上流側鋼材及び下流側鋼材のウェブを重ね合わせたものであることが好ましい。 Further, at one end of the upstream side steel material and the downstream side steel material, an upper plate provided in a region defined by a side from the short side center portion of the flange to one edge and the side of the web; , At the other end of the upstream steel material and the downstream steel material, the downstream side from the web into a region defined by a side from the short side center portion of the flange to the other edge and the side of the web A lower plate provided with a gap larger than the thickness of the web of the steel material and the upstream steel material, and the longitudinal lengths of the flanges of the upstream steel material and the downstream steel material are the same, and the upper plate It is preferable that the plate and the lower plate are arranged on the same plane and the webs of the upstream steel material and the downstream steel material are overlapped.
また、前記上流側鋼材及び下流側鋼材の上板及び下板は、当該止水鋼材を前記フランジの長手方向に積み重ねてねじ留めする積載用ねじ穴を有していることが好ましい。 Moreover, it is preferable that the upper plate and the lower plate of the upstream steel material and the downstream steel material have a loading screw hole for stacking and screwing the water-stopping steel material in the longitudinal direction of the flange.
また、前記上流側鋼材と下流側鋼材とが同一形状及び寸法であることが好ましい。 The upstream steel material and the downstream steel material preferably have the same shape and dimensions.
また、止水壁の建設方法は、始端の構造物から終端の構造物に向かって止水壁を形成し、前記何れかの止水鋼材を、前記建設した止水壁の終端側の側部と前記終端の構造物との間に配置し、前記調節用ねじ穴のねじを緩め、前記ウェブの重なり合う量を調節可能にした状態で上流側鋼材又は下流側鋼材のフランジを前記止水壁の終端側の側部に接続し、下流側鋼材又は上流側鋼材のフランジを前記終端の構造物に接続し、その後、上流側鋼材及び下流側鋼材の調節用ねじ穴を完全に塞ぐシール板を介してねじ留めする、ことを特徴とする。 Further, the construction method of the water blocking wall is to form a water blocking wall from the structure at the start end toward the structure at the end, and connect any one of the water blocking steel materials to the end portion of the constructed water blocking wall. And the flange of the upstream steel material or the downstream steel material in the state of the water stop wall in a state in which the screw of the adjusting screw hole is loosened so that the overlapping amount of the web is adjustable. Connect to the end side, connect the flange of the downstream steel or upstream steel to the structure of the end, and then through a sealing plate that completely closes the adjustment screw hole of the upstream steel and downstream steel And screwing.
また、止水壁の建設方法は、前記何れかの止水鋼材を、両側から挟むように止水壁を建設し、前記調節用ねじ穴のねじを緩め、前記ウェブの重なり合う量を調節可能にした状態で上流側鋼材又は下流側鋼材のフランジを前記止水壁の一方の側部に接続し、下流側鋼材又は上流側鋼材のフランジを前記止水壁の他方の側部に接続し、その後、上流側鋼材及び下流側鋼材の調節用ねじ穴を完全に塞ぐシール板を介してねじ留めする、ことを特徴とする。 Moreover, the construction method of the water stop wall is such that the water stop wall is constructed so that any one of the water stop steel materials is sandwiched from both sides, the screw of the adjustment screw hole is loosened, and the overlapping amount of the web can be adjusted. In this state, the flange of the upstream steel material or the downstream steel material is connected to one side of the water blocking wall, and the flange of the downstream steel material or the upstream steel material is connected to the other side of the water blocking wall, and then , And screwing through a sealing plate that completely closes the screw holes for adjustment of the upstream steel material and the downstream steel material.
本発明の止水鋼材は、ウェブの重なり合う量の調節機能、即ち、フランジの間隔調節機能を有し、長丸穴のねじ穴部分を塞ぐだけで止水機能を発揮することができる。このため、例えば現場での長さ調節の難しい強固な部材を用いた止水壁の建設を可能にし、この建設時に生じる位置ずれを、極めて簡易な操作で補償し、止水壁を完成させることができる。 The water-stopping steel material of the present invention has a function of adjusting the amount of overlapping webs, that is, a function of adjusting the gap between the flanges, and can exhibit a water-stopping function simply by closing the screw hole portion of the oblong hole. For this reason, for example, it is possible to construct a water stop wall using a strong member that is difficult to adjust the length on site, and to compensate for the displacement that occurs during this construction with a very simple operation, to complete the water stop wall. Can do.
本発明の止水鋼材は、Ｈ形鋼の形状で、Ｔ形鋼部分を有する上流側鋼材と、Ｔ形鋼部分を有し、ウェブが上流側鋼材のウェブの下流側に重ね合された下流側鋼材と、を備えており、上流側鋼材及び下流側鋼材のウェブは、重ね合わせの量を調節するための長丸穴であって、上流側鋼材及び下流側鋼材を予め定めた最離位置にした場合に、ウェブ同士が重ね合わされている範囲内にある調節用ねじ穴をそれぞれ有しており、調節用ねじ穴は、当該ねじ穴を完全に塞ぐシール板を介してねじ留めされており、H形鋼のウェブの部分で止水することを特徴とする。フランジの間隔調節のためにウェブに有している長丸穴は、当該ウェブの重ね合された範囲からはみ出さないように設定されており、止水鋼材は長丸穴のみをシールすれば止水できる。これにより、例えば現場で長さ調節の難しい強固な部材を用いた止水壁の建設を可能にし、当該建設時に生じる部材の位置ずれを、極めて簡易な操作で補償し、止水壁を完成させることができる。また、上流側鋼材及び下流側鋼材を同一形状及び寸法にすれば、部品数を少なくでき、コスト低減を図ることができる。 The water-stopping steel material of the present invention is in the shape of an H-shaped steel, and has an upstream steel material having a T-shaped steel portion, a downstream surface having a T-shaped steel portion, and a web superimposed on the downstream side of the web of the upstream steel material. The upstream steel material and the downstream steel material web are oblong holes for adjusting the amount of superposition, and the upstream steel material and the downstream steel material are predetermined farthest positions. In this case, the adjustment screw holes are within the range where the webs are overlapped with each other, and the adjustment screw holes are screwed through a seal plate that completely closes the screw holes. It is characterized by water stopping at the web part of H-shaped steel. The oblong holes in the web for adjusting the gap between the flanges are set so that they do not protrude from the overlapped area of the web. I can water. This makes it possible to construct a water stop wall using a strong member whose length is difficult to adjust at the site, for example, and to compensate for the displacement of the member that occurs during the construction with an extremely simple operation, to complete the water stop wall. be able to. Further, if the upstream steel material and the downstream steel material have the same shape and dimensions, the number of parts can be reduced and the cost can be reduced.
本発明の一実施の形態に係る止水鋼材１及びそれを用いた止水壁１００の建設方法について説明する。 The construction method of the still water steel material 1 which concerns on one embodiment of this invention, and the water stop wall 100 using the same is demonstrated.
図１は、止水鋼材１の斜視図である。止水鋼材１は、H形鋼の形状を有しており、点線で示す、コンクリート又は鉄等の止水壁要素の間に取り付けられる。止水鋼材１のウェブの部分は、上流側の水を受け、下流側に流さないように止水する。詳しくは、止水鋼材１は、Ｔ形鋼部分を有している２つの鋼材を組み合わせて構成されている。この２つの鋼材は、長板状のフランジ４、５と、当該フランジ４、５の短手方向中央部分から垂直に設けられている長板状のウェブ６、７とで構成されているＴ形鋼部分を有しており、互いのウェブ６、７を重ね合わせることによりＨ形鋼の止水鋼材１を構成する。以下、説明の便宜上、ウェブが上流側に載置される部材を上流側鋼材２とし、下流側に配置される部材を下流側鋼材３とする。止水鋼材１は、上流側鋼材２及び下流側鋼材３のウェブ６、７の重なり合う量を調節し、上流側鋼材２及び下流側鋼材３のフランジ４、５の間隔を調節する機能を有している。 FIG. 1 is a perspective view of a water-stopping steel material 1. The water-stopping steel material 1 has the shape of an H-shaped steel, and is attached between water-stopping wall elements such as concrete or iron indicated by dotted lines. The web portion of the water-stopping steel material 1 receives water on the upstream side and stops the water so as not to flow downstream. Specifically, the water-stopping steel material 1 is configured by combining two steel materials having a T-shaped steel portion. These two steel materials are formed into T-shaped flanges 4 and 5, and long plate-shaped webs 6 and 7 provided perpendicularly from the center in the short direction of the flanges 4 and 5. It has a steel portion, and the water-stop steel material 1 of H-section steel is configured by overlapping the webs 6 and 7 with each other. Hereinafter, for convenience of explanation, a member on which the web is placed on the upstream side is referred to as an upstream steel material 2, and a member disposed on the downstream side is referred to as a downstream steel material 3. The still water steel material 1 has a function of adjusting the overlapping amount of the webs 6 and 7 of the upstream steel material 2 and the downstream steel material 3 and adjusting the distance between the flanges 4 and 5 of the upstream steel material 2 and the downstream steel material 3. ing.
図２は、上流側鋼材２及び下流側鋼材３を最離位置にした場合の斜視図を示す。上流側鋼材２及び下流側鋼材３の一方の端、本図において上側には、上流側鋼材２のフランジ４及び下流側鋼材３のフランジ５の短手方向中央部分Ｐ１、Ｐ３から一方の縁Ｐ２、Ｐ４までの辺とウェブ6、7の辺とで区画される領域に設けられている上板８、９が設けられている。ウェブ６、７は、接する面とフランジ４、５の接する位置が、当該フランジ４、５の短手方向中央位置となるように設計されている。フランジ４、５の短手方向中央部分Ｐ１、Ｐ３は、正確には、ウェブ６、７の接していない面とフランジ４、５が接する位置である。 FIG. 2 shows a perspective view when the upstream side steel material 2 and the downstream side steel material 3 are in the most distant positions. On one end of the upstream side steel material 2 and the downstream side steel material 3, on the upper side in the figure, one edge P <b> 2 from the short direction central portions P <b> 1 and P <b> 3 of the flange 4 of the upstream side steel material 2 and the flange 5 of the downstream side steel material 3. , P4 and upper plates 8 and 9 provided in a region defined by the sides of the webs 6 and 7 are provided. The webs 6 and 7 are designed so that the contact position between the contact surface and the flanges 4 and 5 is the center position in the short direction of the flanges 4 and 5. The center portions P1 and P3 in the short direction of the flanges 4 and 5 are precisely the positions where the flanges 4 and 5 are in contact with the non-contact surfaces of the webs 6 and 7.
図３は、図２に示した止水鋼材１の上下を反転した場合の斜視図を示す。上流側鋼材２及び下流側鋼材３の他方の端、本図において上側（図２では下側）には、フランジ４、５の短手方向中央部分Ｐ５、Ｐ７から他方の縁Ｐ６、Ｐ８までの辺とウェブ６、７の辺とで区画される領域に、ウェブ６、７から、それぞれウェブ７、６の厚み以上の間隙を開けて設けられている下板１０、１１が設けられている。フランジ４、５の短手方向中央部分Ｐ５、Ｐ７は、正確には、ウェブ６、７の接している面とフランジ４、５が接する位置である。 FIG. 3 shows a perspective view when the water-stopping steel material 1 shown in FIG. 2 is turned upside down. On the other end of the upstream side steel material 2 and the downstream side steel material 3, on the upper side (lower side in FIG. 2) in the drawing, from the center portions P5 and P7 in the short direction of the flanges 4 and 5 to the other edges P6 and P8. Lower plates 10 and 11 are provided in areas defined by the sides and the sides of the webs 6 and 7, with a gap larger than the thickness of the webs 7 and 6 provided from the webs 6 and 7, respectively. The center portions P5 and P7 in the short direction of the flanges 4 and 5 are precisely the positions where the surfaces of the webs 6 and 7 are in contact with the flanges 4 and 5.
なお、上板８、９、下板１０、１１の表現は、理解の容易のため、止水鋼材１の一方を上側と定めて、本明細書中において、統一して用いるが、図１に示されている止水鋼材１の上下を反転させた状態で使用する場合には、上板及び下板の表現は、逆になることは自明のことであり、この表現によって、本発明は限定されない。 For the sake of easy understanding, the expressions of the upper plates 8 and 9 and the lower plates 10 and 11 are defined as one side of the water-stopping steel material 1 as the upper side. When the water-stopping steel material 1 shown is used in an inverted state, it is obvious that the expressions of the upper plate and the lower plate are reversed, and the present invention is limited by this expression. Not.
図４は、上流側鋼材２の斜視図を示す。図５は、上流側鋼材２の６面図、即ち（ａ）は正面図、（ｂ）は右側面図、（ｃ）は左側面図、（ｄ）は背面図、（ｅ）は平面図、（ｆ）は底面図を示す。本実施例において、フランジ４は、短手方向の長さ３２０ｍｍ（mmはミリメートルを表す。以下同じ）、長手方向の長さ１０００ｍｍ、厚み１５ｍｍである。ウェブ６は、短手方向の長さ３００ｍｍ、棚手方向の長さ１０００ｍｍ、厚み１０ｍｍである。上流側鋼材２は、ウェブ６に、下流側鋼材３のウェブ７（図２、３を参照）との重ね合わせの量を調節するための１又は複数（本実施形態では５個）の長丸穴であって、上流側鋼材２及び下流側鋼材３を予め定めた最離位置にした場合に、ウェブ６、７同士が重ね合わされている範囲内にある、即ち、重ね合されている部分からはみ出して見えない調節用ねじ穴１２を有している。また、上流側鋼材２は、上板８、下板１０に別の同一構造の止水鋼材をフランジ４の長手方向に積み重ねてねじ留めする積載用ねじ穴１３、１４を有している。 FIG. 4 shows a perspective view of the upstream steel material 2. FIG. 5 is a six-side view of the upstream side steel material 2, that is, (a) is a front view, (b) is a right side view, (c) is a left side view, (d) is a rear view, and (e) is a plan view. , (F) shows a bottom view. In this embodiment, the flange 4 has a length in the short direction of 320 mm (mm represents millimeter; the same applies hereinafter), a length in the longitudinal direction of 1000 mm, and a thickness of 15 mm. The web 6 has a length in the short direction of 300 mm, a length in the shelf direction of 1000 mm, and a thickness of 10 mm. The upstream steel member 2 has one or more (five in this embodiment) long circles for adjusting the amount of overlap of the web 6 with the web 7 of the downstream steel member 3 (see FIGS. 2 and 3). It is a hole, and when the upstream steel material 2 and the downstream steel material 3 are at the predetermined farthest positions, the webs 6 and 7 are within the overlapping range, that is, from the overlapped portion. An adjustment screw hole 12 that protrudes and cannot be seen is provided. Further, the upstream side steel material 2 has loading screw holes 13 and 14 for stacking and screwing another water-stopping steel material having the same structure on the upper plate 8 and the lower plate 10 in the longitudinal direction of the flange 4.
上流側鋼材２のウェブ６には、下流側鋼材３のウェブ７と重なり合う側に、ウェブ６の長手方向に沿って、重なり合うウェブ６、７の隙間を通る水を止めるシール材Ｓが設けられている。具体的には、ウェブ６のウェブ７と重なり合う側には、ウェブ６の長手方向に沿って、断面コ字状の溝１５が設けられており、この溝１５には、シール材Ｓの一例として、止水用ゴム紐１６がはめ込まれている。なお、溝１５は、シール材Ｓを保持できる形状であればよく、Ｕ字状、Ｖ字状等であっても良い。または、シール材Ｓに差し込みピンを設けておき、溝１５の代わりに、当該ピンを差し込んで止める穴を備えていても良い。シール材Ｓは、溝１５に一部を嵌めることができ、溝１５から表出している部分が下流側鋼材３のウェブ７に挟まれることにより、防水性能を示す素材のものであれば良く、弾力性及び防水性のある樹脂の他、コルク等を使用しても良い。 The web 6 of the upstream steel material 2 is provided with a sealing material S that stops water passing through the gap between the overlapping webs 6 and 7 along the longitudinal direction of the web 6 on the side overlapping the web 7 of the downstream steel material 3. Yes. Specifically, a groove 15 having a U-shaped cross section is provided along the longitudinal direction of the web 6 on the side of the web 6 that overlaps the web 7, and the groove 15 is an example of the sealing material S. The water stop rubber string 16 is fitted. In addition, the groove | channel 15 should just be a shape which can hold | maintain the sealing material S, and a U shape, V shape, etc. may be sufficient as it. Alternatively, an insertion pin may be provided in the sealing material S, and a hole for inserting and stopping the pin may be provided instead of the groove 15. The sealing material S can be partly fitted in the groove 15, and the portion exposed from the groove 15 is sandwiched between the webs 7 of the downstream steel material 3, so long as it is made of a material that exhibits waterproof performance, In addition to a resin having elasticity and waterproofness, cork or the like may be used.
図６は、止水鋼材１の組み立て方を説明する図で、上流側鋼材２及び下流側鋼材３の上板８、９及び下板１０、１１を省略して示す。下流側鋼材３のウェブ７には、上流側鋼材２のウェブ６に設けてあるのと同じ長丸穴のねじ穴１９が設けられている。ねじ穴１２、１９は、ねじ穴１２を完全に塞ぐシール板１７を介してねじ１８及びこれに対応するボルト（図示せず）によってねじ留めされている。本図は、上流側から見た図であるが、上流側鋼材２のねじ穴１２側にシール板１７を使うことで、水圧によってシール材１７が長丸穴１２に押さえつけられ、シール能力を高めることができる。当然、下流側鋼材３のねじ穴１９側にシール板１７を用いても良い。 FIG. 6 is a view for explaining how to assemble the water-stopping steel material 1, omitting the upper plates 8 and 9 and the lower plates 10 and 11 of the upstream steel material 2 and the downstream steel material 3. The web 7 of the downstream steel material 3 is provided with the same elongated round screw hole 19 as provided in the web 6 of the upstream steel material 2. The screw holes 12 and 19 are screwed by screws 18 and corresponding bolts (not shown) through a seal plate 17 that completely closes the screw holes 12. This figure is a view from the upstream side. By using the seal plate 17 on the screw hole 12 side of the upstream steel material 2, the seal material 17 is pressed against the oblong hole 12 by water pressure, and the sealing ability is improved. be able to. Naturally, the seal plate 17 may be used on the screw hole 19 side of the downstream steel material 3.
図７（ａ）は、上流側鋼材２のねじ穴１２の長丸穴の寸法を、下流側鋼材３のねじ穴１９との関係で説明するための概念図である。図中、上側を上流側とし、下側を下流側とする。図７（ｂ）は、最離位置にあるときのねじ穴１２及びねじ穴１９の関係を示し、図７（ｃ）は、最接近位置にあるときのねじ穴１２及びねじ穴１９の関係を示す。ねじ穴１２、１９は、上流側鋼材２及び下流側鋼材３を図７（ｂ）に示す最離位置にした場合に、ウェブ６、７同士が重ね合わされている範囲内にあることを特徴とする。 FIG. 7A is a conceptual diagram for explaining the size of the elongated round hole of the screw hole 12 of the upstream steel material 2 in relation to the screw hole 19 of the downstream steel material 3. In the figure, the upper side is the upstream side, and the lower side is the downstream side. FIG. 7B shows the relationship between the screw hole 12 and the screw hole 19 at the most distant position, and FIG. 7C shows the relationship between the screw hole 12 and the screw hole 19 at the closest position. Show. The screw holes 12 and 19 are within the range where the webs 6 and 7 are overlapped when the upstream steel material 2 and the downstream steel material 3 are at the most distant positions shown in FIG. To do.
図７（ａ）に示すように、上流側鋼材２のウェブ６の短手方向長さをＷ１mmとする。ウェブ６、７が、図７（ｃ）に示すように、最接近位置にした場合に、ウェブの重なり合っている部分の短手方向中央位置、即ち、ウェブ６の基端から（Ｗ１×０．５）mmだけ遠い位置に、上流側鋼材２のウェブ６及び下流側鋼材３のウェブ７を貫通する半径ｒ１mmの最接近用ねじ穴Ｈ１が設けられる。さらに、図７（ｂ）に示すように、最接近用ねじ穴Ｈ１がウェブ６及び７の重ね合されている範囲内にあるという条件、即ち、ウェブ６、７の先端から余裕分ｃ１mmだけ基端側に最接近用ねじ穴Ｈ１が位置するように、上流側鋼材２のウェブ６及び下流側鋼材３のウェブ７を貫通する最離位置用ねじ穴Ｈ２が設けられる。このねじ穴Ｈ２は、図７（ａ）に示すように、上流側鋼材２のウェブ６の基端から、（Ｗ１×０．７５−（ｒ１＋ｃ１）×０．５）mmだけ遠い位置に設けられる。調節用ねじ穴１２は、ねじ穴Ｈ１とねじ穴Ｈ２とを繋いた長丸穴であり、その全幅は、（Ｗ１×０．５＋ｒ１−ｃ１）mmで表される。 As shown to Fig.7 (a), the transversal length of the web 6 of the upstream steel material 2 shall be W1mm. As shown in FIG. 7C, when the webs 6 and 7 are in the closest position, the center position in the short direction of the overlapping portion of the webs, that is, from the base end of the web 6 (W1 × 0. 5) A closest screw hole H1 having a radius of r1 mm penetrating the web 6 of the upstream steel material 2 and the web 7 of the downstream steel material 3 is provided at a position distant by mm. Further, as shown in FIG. 7 (b), the condition that the closest screw hole H1 is within the range where the webs 6 and 7 are overlapped, that is, the margin c1mm from the tips of the webs 6 and 7 is used. The screw hole H2 for the most separated position penetrating the web 6 of the upstream steel material 2 and the web 7 of the downstream steel material 3 is provided so that the closest screw hole H1 is located on the end side. As shown in FIG. 7A, the screw hole H2 is provided at a position far from the base end of the web 6 of the upstream steel material 2 by (W1 × 0.75− (r1 + c1) × 0.5) mm. . The adjustment screw hole 12 is an oblong hole that connects the screw hole H1 and the screw hole H2, and its full width is represented by (W1 × 0.5 + r1−c1) mm.
例えば、Ｗ１＝３００mm、ｒ１＝１０mm、ｃ１＝１０mmの場合、最離位置にあるときの長さＷ２＝４３０mmであった。即ち、本例の場合、１３０mmだけ幅を調節することができる（以下、調節可能幅という）。例えば、１００ｍｍの調節可能幅を確保する場合、ねじ穴の半径ｒ１と、余裕ｃ１との合計が５０ｍｍの範囲内であれば良い。 For example, when W1 = 300 mm, r1 = 10 mm, and c1 = 10 mm, the length W2 at the farthest position was 430 mm. That is, in the case of this example, the width can be adjusted by 130 mm (hereinafter referred to as an adjustable width). For example, when an adjustable width of 100 mm is secured, the sum of the screw hole radius r1 and the margin c1 may be within a range of 50 mm.
図８（ａ）はシール板１７の寸法を示すと同時に、上流側鋼材２及び下流側鋼材３が最接近位置にあるときのシール板１７の使用状態を示す。図８（ｂ）は、上流側鋼材２及び下流側鋼材３が最離位置にあるときのシール板１７の使用状態を示す。（ｃ）は、上流側鋼材２及び下流側鋼材３が最接近位置と最離位置の中間にあるときのシール板１７の使用状態を示す。シール板１７は、長丸穴の全幅（Ｗ１×０．５＋ｒ１−ｃ１）mmよりも長い。図８（ｂ）に示すように、最離位置にあるときの取り付けの際に、ウェブ６からはみ出ないようにするには、シール板１７の長さは（Ｗ１×０．５＋ｒ１＋ｃ１）mmよりも小さな値にする。 FIG. 8A shows the dimensions of the seal plate 17 and also shows the use state of the seal plate 17 when the upstream side steel material 2 and the downstream side steel material 3 are in the closest positions. FIG.8 (b) shows the use condition of the seal board 17 when the upstream steel material 2 and the downstream steel material 3 exist in the furthest position. (C) shows the use state of the seal plate 17 when the upstream steel material 2 and the downstream steel material 3 are in the middle between the closest approach position and the most distant position. The seal plate 17 is longer than the full width of the oblong hole (W1 × 0.5 + r1−c1) mm. As shown in FIG. 8 (b), the length of the seal plate 17 is less than (W1 × 0.5 + r1 + c1) mm in order to prevent the web 6 from sticking out at the time of attachment at the most distant position. Set to a small value.
図８は、上流側鋼材２のウェブ６と下流側鋼材３のウェブ７の短手方向の長さが同じ場合について説明するが、一方のウェブの短手方向の長さが長い場合であっても、重なっている部分の長さをＷ１として考えれば、基本的な考え方は、同じである。 FIG. 8 illustrates a case where the length of the web 6 of the upstream steel material 2 and the length of the web 7 of the downstream steel material 3 are the same, but the length of one web is long. However, if the length of the overlapping part is considered as W1, the basic idea is the same.
本発明の止水鋼材１を構成する上流側鋼材２及び下流側鋼材３は、積み重ねて使用する場合を想定しなければ、フランジ４、５の長手方向の長さが、「取り付けようとする止水壁の高さよりも高い」という条件を満たす限りにおいて、調節用ねじ穴１２、１９の全幅に関する前記の条件を満たせば良く、ウェブの短手方向長さ、長手方向の長さは、同一でなくても良い。しかし、上流側鋼材２及び下流側鋼材３を同一形状及び寸法とすれば、積み重ねて使用できるだけでなく、Ｈ形鋼を造るのに特殊構造の２つの鋼材を用意する必要は無く、１種類の鋼材を２つ用意するだけで止水鋼材１を構成できるので部品数を少なくできる。 Unless the case where the upstream side steel material 2 and the downstream side steel material 3 which comprise the water-stopping steel material 1 of this invention are piled up and used is assumed, the length of the longitudinal direction of the flanges 4 and 5 is "stop to be attached. As long as the condition “higher than the height of the water wall” is satisfied, it is only necessary to satisfy the above-described condition regarding the overall width of the adjusting screw holes 12 and 19, and the length in the short direction and the length in the longitudinal direction of the web are the same. It is not necessary. However, if the upstream side steel material 2 and the downstream side steel material 3 have the same shape and dimensions, they can be used in a stacked manner, and it is not necessary to prepare two steel materials having a special structure for making an H-shaped steel. Since the water-stopping steel material 1 can be configured only by preparing two steel materials, the number of parts can be reduced.
図９は、上流側鋼材２及び下流側鋼材３を同一形状及び寸法とする場合において、その上板及び下板をそれぞれ同一面上に並べ、上流側鋼材及び下流側鋼材のウェブを重ね合わせて構成した止水鋼材１を、積み重ねた斜視図を示す。この場合、積載用ねじ穴１３、１４は、調節用ねじ穴１２、１９と異なり、シール板でシールする必要がないので、調節用ねじ穴１２、１９と同一又は、それより大きな全幅を有している長丸穴であればよい。上下に積み重ねた止水鋼材は、積載用ねじ穴１３、１４を用いて、ねじ２０及びこれに対応するボルト（図示せず）によってねじ留めされる。 FIG. 9 shows that when the upstream steel material 2 and the downstream steel material 3 have the same shape and dimensions, the upper plate and the lower plate are arranged on the same surface, and the webs of the upstream steel material and the downstream steel material are overlapped. The perspective view which piled up the still water steel material 1 which constituted is shown. In this case, unlike the adjustment screw holes 12 and 19, the loading screw holes 13 and 14 do not need to be sealed with a seal plate, and thus have the same or larger overall width as the adjustment screw holes 12 and 19. Any oval hole may be used. The water-stopping steel material stacked up and down is screwed by screws 20 and bolts (not shown) corresponding thereto using the loading screw holes 13 and 14.
図１０は、止水壁１００の建設の概要を示す。止水壁１００は、川底の土１０１上にコンクリートの床面１０２を設け、川岸にコンクリートの構造物１０３，１０４を設け、既に治水工事の完了している河川に建設される。詳しくは、止水壁１００は、当該河川の下流側に、ドライな作業空間を確保するために建設される。建設作業は、先ず、河川の水が作業空間をバイパスする水路を準備し、流れを減少又はほぼ無くした状態にした後に、水中で行われる。本図の場合、コンクリート製の始端の構造物１０３から終端の構造物１０４に向かって止水壁１００を形成してゆく。止水鋼材１を、建設した止水壁１００の終端側の側部１０５と終端の構造物１０４との間に配置し、調節用ねじ穴１２のねじ１８を緩め、ウェブ６、７の重なり合う量を調節可能にした状態で、上流側鋼材２又は下流側鋼材３のフランジ４、５を止水壁１００の終端側の側部１０５に接続し、下流側鋼材３又は上流側鋼材２のフランジ５、４を終端の構造物１０４に接続し、その後、上流側鋼材２及び下流側鋼材３の調節用ねじ穴１２、１９を完全に塞ぐシール板１７を介してねじ１８よりねじ留めする。 FIG. 10 shows an outline of construction of the water blocking wall 100. The water blocking wall 100 is constructed on a river where a concrete floor surface 102 is provided on the soil 101 at the bottom of the river, and concrete structures 103 and 104 are provided on the riverbank, and the flood control work has already been completed. Specifically, the water blocking wall 100 is constructed on the downstream side of the river to ensure a dry work space. Construction work is first carried out in the water after preparing a channel for river water to bypass the work space and reducing or substantially eliminating flow. In the case of this figure, the water blocking wall 100 is formed from the concrete structure 103 at the beginning to the structure 104 at the end. The water-stopping steel material 1 is disposed between the terminal-side side 105 and the terminal-end structure 104 of the constructed water-stopping wall 100, the screw 18 of the adjusting screw hole 12 is loosened, and the webs 6 and 7 overlap each other. The flanges 4 and 5 of the upstream side steel material 2 or the downstream side steel material 3 are connected to the side part 105 on the terminal side of the water blocking wall 100 in a state in which the adjustment is made adjustable, and the flange 5 of the downstream side steel material 3 or the upstream side steel material 2 is connected. 4 is connected to the terminal structure 104, and then screwed with screws 18 through a seal plate 17 that completely closes the adjustment screw holes 12 and 19 of the upstream steel material 2 and the downstream steel material 3.
以下、止水壁１００の建設手順の説明を行う。図１１は、止水壁１００の建設手順を示す。止水壁１００は、鋼製山留を用いて建設する。鋼製山留は、断面Ｈ形鋼で、その両端に矩形（本実施例では３００ｍｍ×３００ｍｍ）の平板を有している鋼材で、フランジ、ウェブ及び前記平板には、積み重ねて用いるための連結用のねじ穴が設けられている。“工程１”として、図１１（ａ）に示すように、始端の構造物１０３の側壁に、鋼製山留１０６、１０７、１０８を縦に積み重ね支柱１０９を造り、ケミカルアンカーを用いて固定する。“工程２”として、鋼製山留１１０、１１１を、シール材Ｓを介して横に並べて載置し、床面１０２にケミカルアンカーを用いて固定する。“工程３”として、鋼製山留１１２、１１３、１１４を縦に積み重ねて支柱１１５を造り、床面１０２にケミカルアンカーで固定する。“工程４”として、鋼製山留１１０、１１１の上に、所望の高さになるまで鋼製山留をシール材Sを介在させながら積み重ね、ねじで固定する作業を繰り返す。支柱１０９と支柱１１５の間の止水壁の建設が完了すると、同様に、支柱１１５の横に、鋼製山留を２つ横に並べて載置して連結し、前記工程２〜４を繰り返し行う。鋼製山形同士の連結は、ねじ留めにより行う。 Hereinafter, the construction procedure of the water blocking wall 100 will be described. FIG. 11 shows the construction procedure of the water blocking wall 100. The water blocking wall 100 is constructed using a steel pile. The steel pile is a steel material having an H-shaped cross section and a rectangular (300 mm × 300 mm in this embodiment) flat plate at both ends. The flange, the web and the flat plate are connected to be stacked. Screw holes are provided. As “Step 1”, as shown in FIG. 11A, steel piles 106, 107, 108 are vertically stacked on the side wall of the structure 103 at the starting end, and a strut 109 is formed and fixed using a chemical anchor. . As “Step 2”, the steel piles 110 and 111 are placed side by side through the sealing material S and fixed to the floor surface 102 using chemical anchors. As “Process 3”, steel piles 112, 113, 114 are stacked vertically to form a support column 115 and fixed to the floor 102 with a chemical anchor. As “Step 4”, the steel piles 110 and 111 are stacked on the steel piles 110 and 111 with the sealant S interposed therebetween until the desired height is reached, and the work of fixing with screws is repeated. When the construction of the water blocking wall between the support column 109 and the support column 115 is completed, similarly, two steel piles are placed side by side next to the support column 115 and connected, and the above steps 2 to 4 are repeated. Do. The steel chevron is connected by screwing.
図１１（ｂ）に示すように、支柱１１６までの止水壁が完成した時点で、シール材Ｓを介在させて鋼製山留を固定してゆく前記工程２〜４が原因で、設計図と位置ずれが生じる場合がある。この位置ずれを補償するため、予め用意されている長さの違う鋼製山留を組み合わせて用いる。具体的には、“工程５”として、１０００mmの長さの鋼製山留１１７と、５００mmの長さの鋼製山留１１８と、１００mmの長さの鋼製山留１１９とを、シール材Ｓを介在させながら積み重ね、終端の構造物１０４に最接近している止水壁１２０を造る作業を行う。所望の高さの止水壁１２０を造った後、“工程６”として、鋼製山留１１７、１１８、１１９の組み合わせでもなおかつ残る位置ずれ、即ち、最も短い１００mmの鋼製山留１１９よりも短い間隔を、前記１３０mmの調節機能を有する止水鋼材１で補償する。 As shown in FIG. 11 (b), when the water blocking wall up to the column 116 is completed, the design drawing is caused by the steps 2 to 4 in which the steel pile is fixed with the sealing material S interposed. There may be misalignment. In order to compensate for this displacement, steel piles of different lengths prepared in advance are used in combination. Specifically, as “Process 5”, a steel pile 117 having a length of 1000 mm, a steel pile 118 having a length of 500 mm, and a steel pile 119 having a length of 100 mm are used as a sealing material. Stacking is performed while S is interposed, and the work of making the water blocking wall 120 closest to the terminal structure 104 is performed. After constructing the water blocking wall 120 of a desired height, as "Step 6", the remaining position shift even in the combination of the steel piles 117, 118, and 119, that is, the shortest 100 mm steel pile 119 The short interval is compensated by the water-stopping steel material 1 having the adjustment function of 130 mm.
図１２は、前記工程３、工程５で行う「鋼製山留を、シール材Ｓを介在させながら積み重ねる」作業を、シール材Ｓとして止水用ゴム紐１６を用いる場合の説明図である。図示するように、山留鋼材１２１、１２２の各面間に、止水用ゴム紐１６を介在させて積み重ね、鋼製山留のねじ穴を用いてねじ留めする。 FIG. 12 is an explanatory diagram in the case of using the water stop rubber string 16 as the seal material S in the operation of “stacking steel piles with the seal material S interposed” performed in the steps 3 and 5. As shown in the figure, the water retaining rubber strings 16 are interposed between the surfaces of the hill retaining steel members 121 and 122 and are stacked and screwed using the screw holes of the steel dome retaining ring.
図１３は、前記工程３、工程５で行う「鋼製山留を、シール材Ｓを介在させながら積み重ねる」作業を、シール材Ｓとして止水用ゴムシート２１を用いる場合の説明図である。図示するように、山留鋼材１２３、１２４の各面間に、止水用ゴムシート２１を介在させて積み重ね、鋼製山留のねじ穴を用いてねじ留めする。 FIG. 13 is an explanatory diagram when the water stop rubber sheet 21 is used as the sealing material S in the operation of “stacking steel piles while interposing the sealing material S” performed in the steps 3 and 5. As shown in the drawing, the water-stopping rubber sheets 21 are stacked between the surfaces of the hill retaining steel members 123 and 124, and are screwed using the screw holes of the steel hill retaining bolts.
図１４は、前記工程６において、止水壁１２０を構成している鋼製山留と、終端の構造物１０４との間に止水鋼材１を取り付けた状態を示す。止水鋼材１の取り付けは、先ず、“工程７”として、止水鋼材１を、建設した止水壁１２０（図１１（ｂ）を参照）の終端側の側部１０５と終端の構造物１０４との間に配置する。“工程８”として、調節用ねじ穴１２、１９を通っているねじ１８と、積載用ねじ穴１３、１４を通っているねじ２０を緩め、ウェブ６、７の重なり合う量を調節可能にする。“工程９”として、上流側鋼材２のフランジ４を止水壁１２０の終端側の側部１０５に接続する。“工程１０”として、下流側鋼材３のフランジ５を終端の構造物１０４に接続する。“工程１１”として、上流側鋼材２及び下流側鋼材３の調節用ねじ穴１２、１９を完全に塞ぐシール板１７を介してねじ１８よりねじ留めし、積載用ねじ穴１３、１４をねじ１８でねじ留めする。本図では、下流側鋼材３の調節用ねじ穴１９を完全に塞いでいるシール板１７が示されている。 FIG. 14 shows a state in which the water-stopping steel material 1 is attached between the steel pile that forms the water-stopping wall 120 and the terminal structure 104 in the step 6. First, as shown in “Step 7”, the water-stopping steel material 1 is attached to the terminal-side side portion 105 and the terminal-end structure 104 of the water-stopping wall 120 (see FIG. 11B) constructed. Place between. As “Step 8”, the screw 18 passing through the adjusting screw holes 12 and 19 and the screw 20 passing through the loading screw holes 13 and 14 are loosened, and the overlapping amount of the webs 6 and 7 can be adjusted. In “Step 9”, the flange 4 of the upstream steel material 2 is connected to the side portion 105 on the end side of the water blocking wall 120. In “Step 10”, the flange 5 of the downstream steel material 3 is connected to the terminal structure 104. In “Step 11”, the adjustment screw holes 12 and 19 of the upstream side steel material 2 and the downstream side steel material 3 are screwed with screws 18 via a seal plate 17 that completely closes, and the loading screw holes 13 and 14 are screwed into the screw 18. Screw on. In this figure, a seal plate 17 that completely closes the adjusting screw hole 19 of the downstream side steel material 3 is shown.
図１５に示すように、鋼製山留及び止水鋼材１を用いた止水壁１００の建設が完了（図１０の状態）すると、“工程１２”として、水抜きした後に上流側からの水圧によって止水壁１００が倒壊しないように、下流側から止水壁１００を構成している各支柱、即ち、支柱１１４、１１６等のそれぞれに支持材１２５、１２６を取り付け補強する。この工程１２の後、下流側にドライな作業空間を作るため、水抜きを行う。 As shown in FIG. 15, when the construction of the water stop wall 100 using the steel pile and the still water steel material 1 is completed (state of FIG. 10), the water pressure from the upstream side after draining as “Step 12”. In order to prevent the water blocking wall 100 from collapsing, support members 125 and 126 are attached and reinforced to the columns constituting the water blocking wall 100 from the downstream side, that is, the columns 114 and 116, respectively. After this step 12, water is drained to create a dry working space downstream.
図１６は、前記工程１２を完了した後に、下流側の水抜きを行っている途中の様子を示す、実際の工事現場の写真である。図１７は、各支柱を支えている支持材１２５、１２６の基部が見えるまで水抜きが行われた状態を示す、実際の工事現場の写真である。止水壁１００の下流側にはドライな作業空間が作られており、工夫が作業用の足場を組み建て、作業を開始している様子が示されている。このように、本発明の止水鋼材１を用いれば、実際の建設現場で生じた位置ずれを補償でき、かつ、長丸穴のねじ穴１２、１９をシール材１７で塞ぐようにねじ留めすることによって、極めて簡単に止水することが可能になる。 FIG. 16 is a photograph of an actual construction site showing a state in the middle of performing drainage on the downstream side after the step 12 is completed. FIG. 17 is a photograph of an actual construction site showing a state in which water is drained until the bases of the supporting members 125 and 126 supporting the support columns are seen. A dry work space is created on the downstream side of the water blocking wall 100, and it is shown that the work is built and a work scaffold is started. Thus, if the still water steel material 1 of this invention is used, it can compensate for the position shift which arose in the actual construction site, and is screwed so that the screw holes 12 and 19 of an oblong hole may be plugged up with the sealing material 17. This makes it possible to stop the water very easily.
以上説明したように、本発明の止水鋼材１は、上流側鋼材２及び下流側鋼材３のフランジ４、５の間隔を調節できるだけでなく、重ね合されているウェブ６、７の部分は長丸穴のねじ穴１２、１９を塞ぐだけで止水機能を発揮する。このため、例えば長さ調節の難しい強固な止水壁の建設中に生じた位置ずれを補償するため、現場で、鋼材又は鉄板を必要な長さやサイズに切断する作業が不要になり、かつ、鋼材や鉄板を、感電の恐れのある水中でのアーク溶接作業を不要にすることができる。これによって、安心、安全に、ドライな作業空間を確保することができる。 As described above, the still water steel material 1 of the present invention can not only adjust the distance between the flanges 4 and 5 of the upstream steel material 2 and the downstream steel material 3, but also the portions of the webs 6 and 7 that are overlapped are long. The water stop function is demonstrated by simply plugging the round screw holes 12 and 19. For this reason, for example, in order to compensate for the positional deviation that occurred during the construction of a strong water blocking wall whose length is difficult to adjust, it is not necessary to cut the steel material or iron plate to the required length or size at the site, and It is possible to eliminate the need for arc welding work in water, which may cause electric shock, for steel materials and iron plates. As a result, a dry work space can be secured safely and safely.
また、止水鋼材１は、２個の同一形状及び寸法の上流側鋼材２及び下流側鋼材３の内、一方、例えば下流側鋼材３をフランジの長手方向と平行な軸で１８０度回転させて、互いのウェブ６、７を重ね合わせることによって組み立てられる。しかし、変形例として、次のような構成のものがある。上流側鋼材２’及び下流側鋼材３’として、上側（図２で上側）に、上板８、９の代わりに、フランジ４、５の短手方向中央部分から一方の縁までの辺とウェブ６、７の辺とで区画される領域に、ウェブ６、７から、下流側鋼材２及び上流側鋼材３のウェブ７、６の厚み以上の間隙を開けて設けられている上板（下板１０、１１と同様の板）を設けてもよい。当該構成を採用すれば、２個の同一形状及び寸法の上流側鋼材２’及び下流側鋼材３’の内、一方、例えば下流側鋼材３をフランジの短手方向と平行な軸で１８０度回転（上下反転される）させて、互いのウェブを重ね合わせて組み立てることができる。 Further, the water-stopping steel material 1 is formed by rotating, for example, the downstream steel material 3 180 degrees around an axis parallel to the longitudinal direction of the flange, out of the two upstream steel materials 2 and downstream steel materials 3 having the same shape and size. , By assembling the webs 6 and 7 with each other. However, as a modification, there is one having the following configuration. As the upstream steel material 2 ′ and the downstream steel material 3 ′, on the upper side (upper side in FIG. 2), instead of the upper plates 8 and 9, sides and webs from the center portion in the short direction of the flanges 4 and 5 to one edge An upper plate (lower plate) provided in a region partitioned by the sides of 6, 7 from the webs 6 and 7 with a gap larger than the thickness of the webs 7 and 6 of the downstream steel material 2 and the upstream steel material 3. 10 and 11 may be provided. If the said structure is employ | adopted, one of the upstream side steel materials 2 'and downstream side steel materials 3' of the same shape and size, for example, the downstream side steel material 3 will be rotated 180 degree | times by the axis | shaft parallel to the transversal direction of a flange. (Inverted upside down) and can be assembled by overlapping the webs.
なお、本発明の止水鋼材１を用いた止水壁の建設方法は、上記の例に限定されない。例えば、図１８は、止水壁１５０の建設の概要を示す。図９で示したものと同じ構成物には同じ参照番号を付して重複した説明は省略する。本図の場合、止水鋼材１を挟むように、構造物１０３及び１０４の両側から止水壁１５０の建設を行う。調節用ねじ穴１２のねじ１８を緩め、ウェブ６、７の重なり合う量を調節可能にした状態で上流側鋼材２又は下流側鋼材３のフランジ４、５を止水壁１５０の一方の側部に接続し、下流側鋼材３又は上流側鋼材２のフランジ５、４を止水壁１５０の他方の側部に接続し、その後、上流側鋼材２及び下流側鋼材３の調節用ねじ穴１２を完全に塞ぐシール板１７を介してねじ１８によりねじ留めする。この方法を用いれば、川又は海の中に建設されている橋脚の周囲を囲むように止水壁を建設する場合にも、本発明の止水鋼材１が有効に使用できることが理解される。 In addition, the construction method of the water stop wall using the water stop steel material 1 of this invention is not limited to said example. For example, FIG. 18 shows an outline of construction of the water blocking wall 150. The same components as those shown in FIG. 9 are denoted by the same reference numerals, and redundant description is omitted. In the case of this figure, the water stop wall 150 is constructed from both sides of the structures 103 and 104 so as to sandwich the water stop steel material 1. The flanges 4 and 5 of the upstream steel member 2 or the downstream steel member 3 are attached to one side portion of the water blocking wall 150 in a state where the screw 18 of the adjusting screw hole 12 is loosened and the overlapping amount of the webs 6 and 7 is adjustable. Connect the flanges 5 and 4 of the downstream steel member 3 or the upstream steel member 2 to the other side of the water blocking wall 150, and then complete the adjustment screw holes 12 for the upstream steel member 2 and the downstream steel member 3. It is screwed with a screw 18 through a sealing plate 17 that is closed. If this method is used, it will be understood that the water-stopping steel material 1 of the present invention can be used effectively even when the water-stopping wall is constructed so as to surround the periphery of a pier constructed in a river or the sea.
本発明の止水鋼材は、川、海の中だけでなく、水の流れているマンホールの中で止水壁を作る際にも用いることができ、更には、求められる止水壁の幅によっては、止水鋼材を横に並べるだけで、止水壁を建設することも可能になる。 The water-stopping steel material of the present invention can be used not only in rivers and seas, but also in making water-stopping walls in manholes where water flows, and further, depending on the required width of the water-stopping wall. It is also possible to construct a water barrier by simply arranging water-stopping steel materials side by side.
１ 止水鋼材
２ 上流側鋼材
３ 下流側鋼材
４、５ フランジ
６、７ ウェブ
８、９ 上板
１０、１１ 下板
１２、１９ 調節用ねじ穴
１３、１４ 積載用ねじ穴
１５ 溝
１６ 止水用ゴム紐
１７ シール板
１８、２０ ねじ
１００、１５０止水壁
１０１ 土
１０２ コンクリート床
１０３、１０４構造物
DESCRIPTION OF SYMBOLS 1 Water-stop steel material 2 Upstream side steel material 3 Downstream-side steel material 4, 5 Flange 6, 7 Web 8, 9 Upper plate 10, 11 Lower plate 12, 19 Adjustment screw hole 13, 14 Loading screw hole 15, Groove 16 For water stop Rubber string 17 Seal plate 18, 20 Screw 100, 150 Water blocking wall 101 Soil 102 Concrete floor 103, 104 structure
Claims (8)
長板状のフランジと、当該フランジの短手方向中央部分から垂直に設けられている長板状のウェブとで構成されているＴ形鋼部分を有する上流側鋼材と、
長板状のフランジと、当該フランジの短手方向中央部分から垂直に設けられている長板状のウェブとで構成されているＴ形鋼部分を有し、前記ウェブが前記上流側鋼材のウェブの下流側に重ね合された下流側鋼材と、を備えており、
前記上流側鋼材及び下流側鋼材のウェブは、重ね合わせの量を調節するための長丸穴であって、前記上流側鋼材及び下流側鋼材を予め定めた最離位置にした場合に、前記ウェブ同士が重ね合わされている範囲内にある調節用ねじ穴をそれぞれ有しており、
前記予め定めた最離位置は、前記上流側鋼材の調節用ねじ穴と前記下流側鋼材の調節用ねじ穴が重複し、当該調節用ねじ穴をねじが通る範囲で前記上流側鋼材と前記下流側鋼材が最も離間した位置であり、
前記調節用ねじ穴は、当該ねじ穴を完全に塞ぐシール板を介してねじ留めされている、ことを特徴とする止水鋼材。 It is a still water steel material in the shape of an H-shaped steel that prevents upstream water from flowing downstream.
An upstream steel material having a T-shaped steel portion composed of a long plate-like flange and a long plate-like web provided perpendicularly from the short-side central portion of the flange;
It has a T-shaped steel portion composed of a long plate-like flange and a long plate-like web provided perpendicularly from the short direction center portion of the flange, and the web is a web of the upstream steel material A downstream steel material superimposed on the downstream side of
The web of the upstream steel material and the downstream steel material is an oblong hole for adjusting the amount of superposition, and when the upstream steel material and the downstream steel material are at the predetermined farthest positions, the web Each has an adjustment screw hole within the range where they are overlapped,
The predetermined farthest position is such that the adjustment screw hole of the upstream steel material and the adjustment screw hole of the downstream steel material overlap, and the upstream steel material and the downstream are within a range in which the screw passes through the adjustment screw hole. The side steel is the most separated position,
The waterproofing steel material, wherein the adjusting screw hole is screwed through a seal plate that completely closes the screw hole.
上流側鋼材及び下流側鋼材を最接近位置にした場合に、ウェブの重なり合っている部分の短手方向中央位置に、上流側鋼材及び下流側鋼材のウェブを貫通するように設けられている最接近用ねじ穴Ｈ１と、
前記最接近用ねじ穴Ｈ１が、前記ウェブが重ね合されている範囲内にある上流側鋼材及び下流側鋼材の最離位置において、上流側鋼材及び下流側鋼材のウェブを貫通するように設けられている最離位置用ねじ穴Ｈ２と、を繋いだ長丸穴であることを特徴とする請求項１に記載の止水鋼材。 The adjustment screw hole is
When the upstream steel material and the downstream steel material are in the closest position, the closest approach is provided so as to penetrate the web of the upstream steel material and the downstream steel material at the center position in the short direction of the overlapping portion of the web. Screw hole H1,
The closest approach screw hole H1 is provided so as to penetrate the web of the upstream steel material and the downstream steel material at the most separated position of the upstream steel material and the downstream steel material in the range where the web is overlapped. The water-stopping steel material according to claim 1, wherein the water-stopping steel material is an oblong hole that connects the most separated position screw hole H <b> 2.
前記上流側鋼材及び下流側鋼材の他方の端において、前記フランジの短手方向中央部分から他方の縁までの辺と前記ウェブの辺とで区画される領域に、前記ウェブから、前記下流側鋼材及び上流側鋼材のウェブの厚み以上の間隙を開けて設けられている下板と、を備えており、
前記上流側鋼材及び下流側鋼材のフランジの長手方向の長さが同じで、
前記上板及び下板をそれぞれ同一面上に並べ、前記上流側鋼材及び下流側鋼材のウェブを重ね合わせた、ことを特徴とする請求項１乃至請求項３の何れか一項に記載の止水鋼材。 At one end of the upstream side steel material and the downstream side steel material, an upper plate provided in a region partitioned by a side from the lateral center portion of the flange to one edge and the side of the web;
At the other end of the upstream steel material and the downstream steel material, the downstream steel material is separated from the web into a region defined by a side from the center in the short direction of the flange to the other edge and a side of the web. And a lower plate provided with a gap more than the thickness of the web of the upstream steel material,
The longitudinal length of the flange of the upstream steel material and the downstream steel material is the same,
The upper plate and the lower plate are arranged on the same plane, and the webs of the upstream steel material and the downstream steel material are overlapped, and the stop according to any one of claims 1 to 3. Water steel material.
前記請求項１乃至請求項６の何れか一項に記載の止水鋼材を、前記建設した止水壁の終端側の側部と前記終端の構造物との間に配置し、
前記調節用ねじ穴のねじを緩め、前記ウェブの重なり合う量を調節可能にした状態で上流側鋼材又は下流側鋼材のフランジを前記止水壁の終端側の側部に接続し、下流側鋼材又は上流側鋼材のフランジを前記終端の構造物に接続し、その後、上流側鋼材及び下流側鋼材の調節用ねじ穴を完全に塞ぐシール板を介してねじ留めする、ことを特徴とする止水壁の建設方法。 Form a water blocking wall from the structure at the start to the structure at the end,
The water-stopping steel material according to any one of claims 1 to 6 is disposed between a terminal side portion of the constructed water-stopping wall and the terminal structure.
With the screw of the adjustment screw hole loosened, the flange of the upstream steel material or the downstream steel material is connected to the side portion on the terminal side of the water blocking wall in a state where the overlapping amount of the web can be adjusted, and the downstream steel material or A water blocking wall, wherein a flange of an upstream steel material is connected to the terminal structure and then screwed through a sealing plate that completely closes an adjustment screw hole of the upstream steel material and the downstream steel material. Construction method.
前記調節用ねじ穴のねじを緩め、前記ウェブの重なり合う量を調節可能にした状態で上流側鋼材又は下流側鋼材のフランジを前記止水壁の一方の側部に接続し、下流側鋼材又は上流側鋼材のフランジを前記止水壁の他方の側部に接続し、その後、上流側鋼材及び下流側鋼材の調節用ねじ穴を完全に塞ぐシール板を介してねじ留めする、ことを特徴とする止水壁の建設方法。 A water stop wall is constructed so as to sandwich the water stop steel material according to any one of claims 1 to 6 from both sides,
The flange of the upstream steel material or the downstream steel material is connected to one side of the water blocking wall in a state in which the screw of the adjustment screw hole is loosened and the overlapping amount of the web is adjustable, and the downstream steel material or the upstream The flange of the side steel material is connected to the other side portion of the water blocking wall, and then screwed through a sealing plate that completely closes the adjustment screw holes of the upstream steel material and the downstream steel material. Construction method of water barrier.
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