JP4702700B2 - Overtopping prevention device - Google Patents

Overtopping prevention device Download PDF

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JP4702700B2
JP4702700B2 JP2005304958A JP2005304958A JP4702700B2 JP 4702700 B2 JP4702700 B2 JP 4702700B2 JP 2005304958 A JP2005304958 A JP 2005304958A JP 2005304958 A JP2005304958 A JP 2005304958A JP 4702700 B2 JP4702700 B2 JP 4702700B2
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JP2007113254A (en
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細川　　豊
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RAITEKU CO., LTD.
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Description

本発明は、海岸に沿う交通路に設けて越波を緩和防止する越波防止装置に関する。   The present invention relates to an overtopping prevention device that is provided on a traffic route along a coast and prevents overtopping.

道路や鉄道の線路などの交通路で、海岸に沿って設けられた道路では、台風の通過に伴い、高波が護岸を越波し、走行車両などに悪影響を与える場合がある。そのような越波は、海面が持ち上がり砂利などを巻き込んで道路内に越流したり、水位が護岸の高さまで上昇し、波が道路内に打ち込まれたりする状況になる。   On roads provided along the coast, such as roads and railway tracks, high waves may pass over the revetment as typhoons pass, which may adversely affect traveling vehicles. Such overtopping is a situation where the sea surface rises and gravel grabs and overflows into the road, or the water level rises to the level of the revetment and waves are driven into the road.

このような越波を防止するため、海に設ける消波ブロックや、岸に沿って延び、かつ、沖側壁面の上部に沖側から到来する波をはね返すように沖側にせり出す防波形状を持つ防波構造物（例えば特許文献１）などが提案されている。   In order to prevent such overtopping, there is a wave-breaking block installed in the sea, and a wave-proof shape that extends along the shore and protrudes offshore so that waves coming from the offshore side rebound to the upper part of the offshore wall surface. A wave-proof structure (for example, Patent Document 1) has been proposed.

上記のように消波ブロックや防波構造物を設けるには、材料費及び工事費が嵩む問題がある。   In order to provide a wave-dissipating block and a wave-proof structure as described above, there is a problem that material costs and construction costs increase.

ところで、山際に設けられた道路への雪崩、土砂崩落による被害を未然に防止すべくスノーシェッドもしくはロックシェッドなどが保護構造物（例えば特許文献２及び特許文献３）が設けられ、海岸に沿う道路に設けられたものでは、柱の間から道路に波が入り込み、越波の影響を受ける箇所がある。
特開２００３−８２６３６号公報 特開平２−８０７０３号公報 実開昭６０−１５４４１２号公報 By the way, in order to prevent damage caused by avalanches and landslides on the roads at the mountains, snow shed or rock sheds are provided with protective structures (for example, Patent Document 2 and Patent Document 3), and roads along the coast are provided. In the installed one, there are places where waves enter the road from between the pillars and are affected by overtopping.
JP 2003-82636 A Japanese Patent Laid-Open No. 2-80703 Japanese Utility Model Publication No. 60-154212

上記のように柱を備えた保護構造物では、越波対策として柱間に板材を配置することが考えられるが、単に板材を取り付けただけでは、波力により破損し易く、耐久性に劣る問題がある。   In the protection structure with columns as described above, it is conceivable to arrange the plate material between the columns as a measure against overtopping. However, simply attaching the plate material is likely to break due to wave force, and the durability is inferior. is there.

そこで、本発明は、波力を効果的に減少することができる越波防止装置を提供することを目的とする。   Then, an object of this invention is to provide the overtopping prevention apparatus which can reduce wave force effectively.

請求項１の発明は、海岸に沿う交通路に設けられる越波防止装置において、前記交通路の海岸側に設けられ合成樹脂製の網からなる防護面と、前記網を設置する設置手段とを備え、前記設置手段が交通路に沿って並んだ柱であり、これら柱間に前記網を張設して前記防護面を設け、隣り合う前記網の左右端部同士を接続し、前記網の左右端部の少なくとも一方を、前記柱の海側の前面とこの前面に固定する板状の押え材とにより挟み付けて固定し、隣り合う柱間に斜めロープ材を交差方向に配置したものである。 According to a first aspect of the present invention, in the overtopping prevention device provided on the traffic road along the coast, a protective surface made of a synthetic resin net provided on the coast side of the traffic road, and an installation means for installing the net are provided. The installation means are columns arranged along a traffic route, the nets are stretched between the columns to provide the protective surface, the left and right ends of the adjacent nets are connected to each other, At least one of the end portions is sandwiched and fixed between the sea side front surface of the pillar and a plate-like presser material fixed to the front surface, and an oblique rope material is arranged in an intersecting direction between adjacent pillars. is there.

また、請求項２の発明は、網目の大きさの異なる前記網を重ね合わせたものである。   According to a second aspect of the present invention, the nets having different mesh sizes are overlapped.

また、請求項３の発明は、前記網が無結節網である。   According to a third aspect of the present invention, the network is a knotless network.

また、請求項４の発明は、前記柱は、前記交通路の少なくとも一部を覆う屋根を支持するものである。   According to a fourth aspect of the present invention, the pillar supports a roof covering at least a part of the traffic path.

請求項１の構成によれば、設置手段に網を設置して防護面を形成し、この合成樹脂製の網からなる防護面が面的に波を受けて波力を減少させることができる。また、網を合成樹脂製とすることにより、鋼製に比べて、海水に対して、耐久性に優れたものとなる。さらに、合成樹脂製の網は柔軟性を有するから、搬入時には巻くなどすることにより、コンパクトにでき、同時に現場での作業性も良好となる。また、板状の押え材と柱で挟み付けることによって柱間に網を張設することにより、防護面を簡便に設けることができ、防護面で受けた波力を一つ一つの網によって緩和減少することができる。さらに、隣り合う柱間に斜めロープ材を交差方向に配置することにより、網の一部に波力が加わっても、網全体で変形し、波力を効果的に吸収することができる。 According to the configuration of the first aspect, a protective surface is formed by installing a net on the installation means, and the protective surface made of the synthetic resin net can receive waves on the surface and reduce the wave force. Moreover, by using a synthetic resin for the net, it is superior in durability to seawater compared to steel. Furthermore, since the net made of synthetic resin has flexibility, it can be made compact by winding it at the time of carrying in, and at the same time, the workability on site is also improved. In addition, a protective surface can be easily provided by stretching a net between columns by sandwiching it between a plate-shaped presser material and a column, and wave forces received on the protective surface are alleviated by each net Can be reduced. Further, by arranging the diagonal rope members between the adjacent columns in the crossing direction, even if wave force is applied to a part of the net, the entire net is deformed and the wave force can be effectively absorbed.

また、請求項２の構成によれば、小さい網目の網により、波に巻き込まれた砂利などを捕捉し、大きな網目の太い網により、波力を効率よく吸収することができる。   Moreover, according to the structure of Claim 2, gravel caught in the wave etc. can be caught with the mesh of a small mesh, and a wave force can be absorbed efficiently with a thick mesh of a large mesh.

また、請求項３の構成によれば、網を構成する線材は、交差部において結ばれずに真っ直ぐに形成されているため、網に力が加わると、その力が網全体に分散することにより、高い波力吸収効果が得られる。また、結節網では、線材を交差部で結ぶ際に交差部の先妻に引張力が集中するからその部分が弱く成り易いが、このような問題が無結節網では無く、高い波力吸収機能が得られる。   Further, according to the configuration of claim 3, since the wire constituting the net is formed straight without being tied at the intersection, when force is applied to the net, the force is dispersed throughout the net, High wave power absorption effect is obtained. Also, in the knot network, when the wire is tied at the crossing part, the tensile force concentrates on the tip of the crossing part, so that part tends to be weak, but this problem is not a knotless network, and high wave force absorption function can get.

また、請求項４の構成によれば、交通路の少なくとも一部を覆う屋根を備えた保護構造物の柱を利用して網からなる防護面を設置することができる。   Moreover, according to the structure of Claim 4, the protection surface which consists of a net | network can be installed using the pillar of the protection structure provided with the roof which covers at least one part of a traffic path.

本発明における好適な実施の形態について、添付図面を参照しながら詳細に説明する。なお、以下に説明する実施の形態は、特許請求の範囲に記載された本発明の内容を限定するものではない。また、以下に説明される構成の全てが、本発明の必須要件であるとは限らない。各実施例では、従来とは異なる越波防止装置を採用することにより、従来にない越波防止装置が得られ、その越波防止装置を夫々記述する。   Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention. In each embodiment, an unprecedented overtopping prevention device is obtained by employing a different overtopping prevention device, and the overtopping prevention device is described respectively.

以下、本発明の越波防止装置の実施例１について図１〜図８を参照して説明する。図３に示すように、コンクリート製のロックシェッドは、複数の主桁１を交通路である道路Ｍの長さ方向に向う横締用ＰＣ鋼材２により一体に緊結して山Ｙに沿う屋根３を形成し、その主桁１は、交通路幅方向に向うＰＣ鋼材４によりプレテンション方式で緊張力が付与されており、前記屋根３の交通路幅方向の両側を、海Ｕ側の海側支持体たる柱５および山側支持体である壁体６上に載置し、その屋根３の幅方向両側をそれぞれ柱５と壁体６に結合してなり、柱５は道路Ｍの長さ方向に沿って所定間隔で基礎に立設されている。   Hereinafter, a first embodiment of the overtopping prevention device of the present invention will be described with reference to FIGS. As shown in FIG. 3, the concrete rock shed has a roof 3 along a mountain Y, in which a plurality of main girders 1 are united together by a PC steel material 2 for lateral fastening facing the length direction of a road M as a traffic path. The main girder 1 is pretensioned by a PC steel material 4 facing in the traffic road width direction, and tension is applied to both sides of the roof 3 in the traffic road width direction on the sea side on the sea U side. It is placed on a pillar 5 as a support body and a wall body 6 as a mountain side support body, and both sides in the width direction of the roof 3 are connected to the pillar 5 and the wall body 6 respectively. Is erected on the foundation at predetermined intervals.

そして、前記柱５を設置手段として、それら柱５，５…間に網11により防護面７が設けられる。また、図中、８はコンクリート等からなる護岸であり、前記柱５が立設されている。   And the protective surface 7 is provided by the net | network 11 between these pillars 5,5 ... using the said pillar 5 as an installation means. In the figure, 8 is a revetment made of concrete or the like, and the pillar 5 is erected.

まず、図５〜図８により本発明に用いる網11の構成について説明すると、前記網11は合成樹脂からなる貫通型無結筋網であり、例えば合成樹脂製の繊維糸12，12Ａを複数撚り合わせて線材13，13Ａを形成し、これら線材13，13Ａは交差方向をなし、交差部14により無結筋により相互に固定されている。尚、無結節網にはラッセル式もあるが、好ましくは貫通型を用いる。図５は構造を説明する説明図であり、同図に示すように、線材13，13Ａの交差部14において、一方の線材13の繊維糸12，12の間に隙間により形成する輪部 15に、他方の線材13Ａの繊維糸12Ａ，12Ａを前後逆方向から挿通し、さらに、交差部14においても繊維糸12，12Ａを撚って輪部15，15Ａを閉めることにより、両線材13，13Ａを交差部14で固定する。尚、15Ａは交差部14で前記繊維糸12Ａ，12Ａの間に隙間により形成する輪部である。そして、図５は説明のために輪部15，15Ａを開いて図示したが、実際の網11では、前記輪部15，15Ａは閉じられた構造となる。   First, the structure of the net 11 used in the present invention will be described with reference to FIGS. 5 to 8. The net 11 is a penetration type unconnected reinforcing net made of a synthetic resin. For example, a plurality of fiber yarns 12 and 12A made of synthetic resin are twisted. Together, the wire rods 13 and 13A are formed. These wire rods 13 and 13A form a crossing direction, and are fixed to each other at the crossing portion 14 by unconnected bars. There is a Russell type for the knotless net, but a penetration type is preferably used. FIG. 5 is an explanatory view for explaining the structure. As shown in FIG. 5, at the intersecting portion 14 of the wire rods 13 and 13A, the ring portion 15 formed by a gap between the fiber yarns 12 and 12 of the one wire rod 13 is formed. By inserting the fiber yarns 12A and 12A of the other wire rod 13A from the front and back directions, and twisting the fiber yarns 12 and 12A at the crossing portion 14 and closing the ring portions 15 and 15A, both the wire rods 13 and 13A are inserted. Is fixed at the intersection 14. Reference numeral 15A denotes an annular portion formed by a gap between the fiber yarns 12A and 12A at the intersecting portion 14. 5 is shown with the ring portions 15 and 15A opened for explanation, but in the actual net 11, the ring portions 15 and 15A have a closed structure.

また、網11は略長方形状をなし、網11の縁にはロープ材16が設けられている。また、図６及び図７に示すように、前記ロープ材16において線材13，13Ａの端部側を折り返し、線材13，13Ａの重複部分18で線材13，13Ａ相互を固定し、表裏の線材13，13Ａの間にロープ材16を配置する。   The net 11 has a substantially rectangular shape, and a rope member 16 is provided on the edge of the net 11. Further, as shown in FIGS. 6 and 7, the end portions of the wires 13 and 13A in the rope material 16 are folded back, and the wires 13 and 13A are fixed to each other by overlapping portions 18 of the wires 13 and 13A. , 13A is disposed between the rope members 16.

また、網11に用いる合成樹脂としては、高密度のポリエチレンなどが好適であり、その高密度のポリエチレンを用いた場合、網11の比重は０．９４〜０．９６である。また、必要に応じて、網11にカーボンブラックや紫外線吸収剤を使用して耐候性を向上することができる。   The synthetic resin used for the mesh 11 is preferably high-density polyethylene, and when the high-density polyethylene is used, the specific gravity of the mesh 11 is 0.94 to 0.96. If necessary, the weather resistance can be improved by using carbon black or an ultraviolet absorber for the net 11.

さらに、図８に示すように、網11，11は網目の一辺の長さＭ，ｍが異なり（Ｍ＞ｍ）、且つ線材13，13Ａの太さの異なるものを組み合わせて使用する。大きな網目の網 11は、小さな網目の網11に比べて太い線材13，13Ａが用いられる。例えば、一辺の長さＭは100ｍｍ(ミリメートル)、一辺の長さｍは 4.0〜4.5ｍｍである。そして、網目の大きな網11の前に、網目の小さな網11を重ね合わせ、即ち、山側の網目の小さな綱11が位置するようにして複数の網11，11を重ね合わせて柱５，５間に張設する。また、この例では、１枚の網目の小さい網11と、２枚の網目の大きな網11，11とを重ね合わせ、それら小さな網11と大きな網11，11の前記ロープ材16，16，16同士を連結用ロープ材（図示せず）などにより編んで一体化した多重網18を用い、この多重網18は、前記柱５，５の間隔に対応した左右幅寸法と、防護面７の高さに対応した高さ寸法を有する。尚、多重網18において、小さい網11を海Ｕ側に配置する。   Furthermore, as shown in FIG. 8, the nets 11 and 11 are used in combination with different lengths M and m of one side of the mesh (M> m) and different thicknesses of the wires 13 and 13A. The large mesh net 11 uses thicker wires 13 and 13A than the small mesh net 11. For example, the length M of one side is 100 mm (millimeters), and the length m of one side is 4.0 to 4.5 mm. Then, a small net 11 is overlapped before a large net 11, that is, a plurality of nets 11, 11 are overlapped so that a small rope 11 on the mountain side is positioned between the columns 5 and 5. To stretch. In this example, one small mesh 11 and two large meshes 11 and 11 are superposed, and the rope members 16, 16, 16 of the small mesh 11 and the large nets 11, 11 are overlapped. A multiplex net 18 knitted and integrated with a connecting rope member (not shown) or the like is used. The multiplex net 18 has a horizontal width dimension corresponding to the interval between the columns 5 and 5 and a height of the protective surface 7. It has a height dimension corresponding to the height. In the multiplex network 18, a small network 11 is arranged on the sea U side.

次に、前記柱５，５…への網11の取付構造の詳細について説明する。   Next, the details of the structure for attaching the net 11 to the pillars 5, 5... Will be described.

図１及び図２に示すように、柱５，５…間の上下に横ロープ材21を張設し、この横ロープ材21の両端には輪体21Ａが一体に設けられており、この横ロープ材21として、有機繊維ロープなどが用いられる。前記両端の柱５，５の上下に、両端固定部たるアイボルト22，22を固着し、このアイボルト22にターンバックル23により前記輪体21Ａを連結し、そのターンバックル22を調整して横ロープ材21に所定の張力を与えている。尚、アイボルト22は螺子部を備えた先端がコンクリート製の柱５に埋設固定され、基端にターンバックル23を連結するリング部（図示せず）を有する。   As shown in FIG. 1 and FIG. 2, horizontal rope members 21 are stretched between the columns 5, 5,... An organic fiber rope or the like is used as the rope material 21. The eyebolts 22 and 22 which are both ends fixing portions are fixed to the upper and lower sides of the pillars 5 and 5 at both ends, and the ring body 21A is connected to the eyebolt 22 by a turnbuckle 23, and the turnbuckle 22 is adjusted to adjust the horizontal rope material. A predetermined tension is applied to 21. Note that the eye bolt 22 has a ring portion (not shown) for connecting the turnbuckle 23 to the base end of the eye bolt 22 having a screw portion embedded in the concrete pillar 5.

多重網18の上下のロープ材16，16，16を、繊維ロープなどからなるリング体24により複数箇所連結する。また、柱５の海側の前面略中央において、隣り合う多重網18の左右端部同士が接続され、この場合、左右のロープ材16，16，16同士を、繊維ロープからなる接続用繊維ロープ25により接続する。この場合、図４に示すように、一方の３枚の網11，11，11の３枚の網11，11，11のロープ材16，16，16と他方のロープ材16，16，16を接続用繊維ロープ25により螺旋状に編み込むことにより接続できる。   The rope members 16, 16, 16 on the upper and lower sides of the multiplex net 18 are connected at a plurality of points by a ring body 24 made of a fiber rope or the like. In addition, the left and right ends of the adjacent multiple net 18 are connected to each other at the center of the front surface of the pillar 5 on the sea side. In this case, the right and left rope members 16, 16, 16 are connected to each other by a fiber rope for connection. Connect with 25. In this case, as shown in FIG. 4, the ropes 16, 16, 16 of the three nets 11, 11, 11 of the three nets 11, 11, 11 and the other rope members 16, 16, 16 are connected. The connection can be made by weaving spirally with the connecting fiber rope 25.

また、前記柱５の前面における隣り合う多重網18の接続箇所において、これら接続箇所を固定する接続箇所固定手段26を備える。この接続箇所固定手段26 は、フラットバーなどからなる板状の押え材27と、この押え材27を柱５の前面に固定する複数のボルト28とを備え、網11からなる前記多重網18の左右方向端部を前記柱５の前面と押え材27の面とにより挟み付けて固定する。尚、前記押え材27は、網11の高さに対応する高さ寸法を有する。そして、前記固定により網11の左右端部の左右方向（道路長さ方向）の移動と、上下方向の移動を規制する。尚、この例では、接続部固定手段26を設けた柱５の隣の柱５には接続部固定手段26を設けずに、１本飛ばし毎に柱５に接続部固定手段26を設けており、多重網18の左右端部の一方は接続部固定手段26により柱５に固定されている。したがって、接続箇所固定手段26により、多重網18の長手方向である左右端部の少なくとも一方がその長さ方向略全長さで固定されているため、波力に対して、１枚の多重網18で効果を十分に発揮することができる。   In addition, a connection location fixing means 26 for fixing the connection locations at the connection locations of the adjacent multiple networks 18 on the front surface of the pillar 5 is provided. The connection location fixing means 26 includes a plate-like pressing member 27 made of a flat bar and the like, and a plurality of bolts 28 for fixing the pressing member 27 to the front surface of the column 5. The left and right end portions are sandwiched and fixed between the front surface of the column 5 and the surface of the pressing member 27. The pressing member 27 has a height corresponding to the height of the net 11. The fixing restricts the movement of the left and right ends of the net 11 in the left-right direction (the road length direction) and the movement in the up-down direction. In this example, the column 5 adjacent to the column 5 provided with the connecting portion fixing means 26 is not provided with the connecting portion fixing means 26, but the connecting portion fixing means 26 is provided on the column 5 every time one is skipped. One of the left and right end portions of the multiplex network 18 is fixed to the column 5 by the connecting portion fixing means 26. Therefore, since at least one of the left and right end portions, which are the longitudinal direction of the multiplex network 18, is fixed by the connection place fixing means 26 with substantially the entire length in the length direction, the single multiplex network 18 with respect to wave force Can fully demonstrate the effect.

また、隣り合う柱５，５の間に斜めロープ材29，29を交差方向に配置し、それら斜めロープ材29，29の上下の端部を、前記横ロープ材21，21又は柱５に連結し、さらに、必要に応じて、斜めロープ材29，29を網11からなる多重網18に複数箇所で連結する。このように、１枚の多重網18にクロスロープとなる斜めロープ材29，29を設けることにより、多重網18の一部に波力が加わっても、多重網18全体で変形し、その力を効果的に吸収することができる。   In addition, diagonal rope members 29 and 29 are arranged in the crossing direction between adjacent columns 5 and 5, and upper and lower ends of the inclined rope members 29 and 29 are connected to the horizontal rope members 21 and 21 or the column 5. Further, if necessary, the diagonal rope members 29 and 29 are connected to the multiple network 18 composed of the network 11 at a plurality of locations. In this way, by providing the slanted rope members 29 and 29 serving as cross ropes in one multiplex network 18, even if wave force is applied to a part of the multiplex network 18, the entire multiplex network 18 is deformed, and the force Can be effectively absorbed.

このように本実施例では、請求項１に対応して、海岸に沿う交通路たる道路Ｍに設けられる越波防止装置において、道路Ｍの海岸側に設けられ合成樹脂製の網 11からなる防護面７と、網11を設置する設置手段とを備え、設置手段が交通路に沿って並んだ柱５であり、これら柱５，５間に網11を張設して防護面７を設け、隣り合う網11の左右端部同士を接続し、網11の左右端部の少なくとも一方を、柱５の海側の前面とこの前面に固定する板状の押え材27とにより挟み付けて固定している。この合成樹脂製の網11からなる防護面７が面的に波を受けて波力を減少させることができる。また、網11を合成樹脂製とすることにより、鋼製に比べて、海水に対して、耐久性に優れる。さらに、合成樹脂製の網11は柔軟性を有するから、搬入時には巻くなどすることにより、コンパクトにでき、同時に現場での作業性も良好となる。また、板状の押え材27と柱５で挟み付けることによって柱５，５間に網11を張設することにより、防護面７を簡便に設けることができ、防護面７で受けた波力を一つ一つの網11によって緩和減少することができる。特に既設の構造物の柱５を利用できる利便性がある。さらに、隣り合う柱５，５間に斜めロープ材29，29を交差方向に配置することにより、網11の一部に波力が加わっても、網11全体で変形し、波力を効果的に吸収することができる。 Thus, in the present embodiment, corresponding to claim 1, in the overtopping prevention device provided on the road M which is a traffic route along the coast, the protective surface comprising the synthetic resin net 11 provided on the coast side of the road M. 7 and an installation means for installing the net 11, and the installation means is a column 5 arranged along the traffic route. A net 11 is stretched between these columns 5 and 5 to provide a protective surface 7. The right and left ends of the mesh 11 are connected to each other, and at least one of the left and right ends of the mesh 11 is fixed by being sandwiched between the sea side front surface of the pillar 5 and a plate-like presser material 27 fixed to the front surface. Yes. The protective surface 7 made of the synthetic resin net 11 can receive a wave and reduce the wave force. Further, by making the mesh 11 made of synthetic resin, it is superior in durability against seawater compared to steel. Further, since the synthetic resin net 11 has flexibility, it can be made compact by winding it at the time of carrying in, and at the same time, the workability at the site is also improved. Further, the net 11 is stretched between the columns 5 and 5 by being sandwiched between the plate-shaped presser material 27 and the column 5, so that the protective surface 7 can be easily provided, and the wave force received by the protective surface 7. Can be alleviated and reduced by each network 11. In particular, there is a convenience that the pillar 5 of the existing structure can be used. Further, by arranging the diagonal rope members 29 and 29 between the adjacent columns 5 and 5 in the crossing direction, even if wave force is applied to a part of the net 11, it is deformed in the entire net 11 and the wave force is effectively applied. Can be absorbed into.

また、このように本実施例では、請求項２に対応して、網目の大きさの異なる網11，11を重ね合わせたから、小さい網目の網11により、波に巻き込まれた砂利などを捕捉し、大きな網目の太い網11により、波力を効率よく吸収することができる。   In this way, in the present embodiment, in correspondence with claim 2, the nets 11 and 11 having different mesh sizes are overlapped, so that gravel caught in the waves is captured by the small mesh net 11. The wave power can be efficiently absorbed by the thick net 11 having a large mesh.

また、このように本実施例では、請求項３に対応して、網11が無結節網であるから、網11を構成する線材13，13Ａは、交差部14において結ばれずに真っ直ぐに形成されているため、網11に力が加わると、その力が網11全体に分散するため、高い波力吸収効果が得られる。また、結節網では、線材を交差部で結ぶ際に交差部の線材に引張力が集中するからその部分が弱く成り易いが、このような問題が無結節網では無く、高い波力吸収機能を得ることができる。   Further, in this embodiment, in correspondence with the third aspect, since the net 11 is a knotless net, the wires 13 and 13A constituting the net 11 are formed straight without being connected at the intersection 14. Therefore, when a force is applied to the net 11, the force is dispersed throughout the net 11, so that a high wave force absorption effect can be obtained. Also, in the knot network, when the wire is tied at the intersection, the tensile force concentrates on the wire at the intersection, so that part tends to be weak, but such a problem is not a nodule network and has a high wave force absorption function. Obtainable.

また、このように本実施例では、請求項４に対応して、柱５は、交通路たる道路Ｍの少なくとも一部を覆う屋根３を支持するものであるから、道路Ｍの少なくとも一部を覆う屋根３を備えた保護構造物の柱５を利用して網11からなる防護面７を設置することができる。   In this way, in this embodiment, in correspondence with claim 4, the pillar 5 supports the roof 3 that covers at least a part of the road M as a traffic path. A protective surface 7 made of a net 11 can be installed using a pillar 5 of a protective structure with a covering roof 3.

また、実施例上の効果として、柱５，５間毎に１つの多重網18を設け、さらに、柱５の前面における隣り合う多重網18の接続箇所において、これら接続箇所を接続箇所固定手段26により、柱５に固定したから、複数の網11からなり縦長な多重網18の少なくとも左右一側を接続箇所固定手段26により固定することにより規制し、波力に対し、１つ１つの多重網18によりその力を緩和減少させることができる。   Further, as an effect of the embodiment, one multiplex network 18 is provided between the pillars 5 and 5, and the connection locations are connected to the connection location fixing means 26 at the connection locations of the adjacent multiplex networks 18 on the front surface of the columns 5. Therefore, at least one of the left and right sides of the vertically long multiplex network 18 composed of a plurality of networks 11 is fixed by the connection location fixing means 26, and each multiplex network is controlled against the wave force. The power can be reduced and reduced by 18.

図９は本発明の実施例２を示し、上記実施例１と同一部分に同一符号を付し、その詳細な説明を省略して詳述すると、この例では、輪体24は、可撓性を有し、例えばエンドレスロープなどからなり、その輪体24の線材同士を重ねるように伸ばし、一方の端部24Ａをロープ材16，16，16に巻装し、巻装した端部24Ａの輪内に他方側の端部24Ｂを挿通し、この端部24Ｂに前記横ロープ材21を通してなる。   FIG. 9 shows a second embodiment of the present invention. The same reference numerals are given to the same portions as those in the first embodiment, and detailed description thereof will be omitted. In this example, the ring body 24 is flexible. For example, it is composed of an endless rope, etc., and the wires 24 of the ring body 24 are extended so as to overlap each other, and one end 24A is wound around the rope members 16, 16, 16 and the loop of the wound end 24A The other end 24B is inserted into the inside, and the lateral rope member 21 is passed through the end 24B.

以上、本発明の実施例について詳述したが、本発明は、前記実施例に限定されるものではなく、本発明の要旨の範囲内で種々の変形実施が可能である。例えば、請求項４においては、屋根を設けずに柱だけを設け、この柱間に防護面を設けてもよい。また、網11は複数枚重ねて多重網とすることが好ましいが、１枚でもよく、２枚或いは４枚以上を重ねて使用してもよい。   As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, in claim 4, it is possible to provide only columns without providing a roof, and provide a protective surface between the columns. In addition, it is preferable that a plurality of nets 11 are overlapped to form a multiple network, but one may be used, or two or four or more may be used in an overlapping manner.

本発明の実施例１を示す柱及び防護面の正面図である。It is a front view of the pillar which shows Example 1 of this invention, and a protection surface. 同上、柱及び防護面の平面図である。It is a top view of a pillar and a protection surface same as the above. 同上、保護構造物の断面図である。It is sectional drawing of a protection structure same as the above. 同上、隣り合う網の接続部分を示す正面図である。It is a front view which shows the connection part of an adjacent network same as the above. 同上、網の構造を説明する正面説明図である。It is a front explanatory drawing explaining the structure of a net | network same as the above. 同上、網の端部の平面展開図であり、網とロープ材とを示す。FIG. 2 is a plan development view of an end portion of a net, showing a net and a rope material. 同上、一部を断面にした網の側面図であり、図７（Ａ）は網の端部側にロープ材を重ねて配置した状態、図７（Ｂ）は網の端部を折り返して重複部分を形成した状態を示す。FIG. 7A is a side view of a net partly in section, FIG. 7A shows a state in which rope materials are overlapped on the end side of the net, and FIG. 7B overlaps by folding the end of the net. The state which formed the part is shown. 同上、一部を断面にした網の要部の側面図であり、図８（Ａ）は網目の大きな網、図８（Ｂ）は網目の小さな網を示す。FIG. 8A is a side view of the main part of the net with a part in cross section. FIG. 8A shows a net with a large mesh, and FIG. 8B shows a net with a small mesh. 本発明の実施例２を示し、図９（Ａ）は防護面の要部の正面図、図９（Ｂ）は防護面の要部の断面図である。9 shows a second embodiment of the present invention, FIG. 9A is a front view of the main part of the protective surface, and FIG. 9B is a cross-sectional view of the main part of the protective surface.

３ 屋根
５ 柱（設置手段）
７ 防護面
11 網
16 ロープ材
18 多重網
27 押え材
Ｙ 山
Ｕ 海
Ｍ 道路 3 roof 5 pillar (installation means)
7 Protective surface
11 Net
16 Rope material
18 Multiple networks
27 Presser foot Y Mountain U Sea M Road

Claims (4)

海岸に沿う交通路に設けられる越波防止装置において、前記交通路の海岸側に設けられ合成樹脂製の網からなる防護面と、前記網を設置する設置手段とを備え、前記設置手段が交通路に沿って並んだ柱であり、これら柱間に前記網を張設して前記防護面を設け、隣り合う前記網の左右端部同士を接続し、前記網の左右端部の少なくとも一方を、前記柱の海側の前面とこの前面に固定する板状の押え材とにより挟み付けて固定し、隣り合う柱間に斜めロープ材を交差方向に配置したことを特徴とする越波防止装置。 An overtopping prevention device provided on a traffic road along the coast, comprising a protective surface made of a synthetic resin net provided on the coast side of the traffic road, and an installation means for installing the net, the installation means being a traffic road The nets are arranged along the columns, the nets are stretched between the columns to provide the protective surface, the left and right ends of the adjacent nets are connected to each other, and at least one of the left and right ends of the nets is A wave overtopping prevention device characterized by sandwiching and fixing between the front side of the column on the sea side and a plate-like presser fixed to the front side, and an oblique rope member arranged in an intersecting direction between adjacent columns . 網目の大きさの異なる前記網を重ね合わせたことを特徴とする請求項１記載の越波防止装置。 2. The overtopping prevention apparatus according to claim 1, wherein the nets having different mesh sizes are overlapped. 前記網が無結節網であることを特徴とする請求項１又は２記載の越波防止装置。 3. The overtopping prevention device according to claim 1, wherein the network is a knotless network. 前記柱は、前記交通路の少なくとも一部を覆う屋根を支持するものであることを特徴とする請求項１〜３のいずれか１項に記載の越波防止装置。 The overtopping prevention device according to any one of claims 1 to 3, wherein the pillar supports a roof that covers at least a part of the traffic path.
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JPS5589750U (en) * 1978-12-17 1980-06-20
JPS5687517U (en) * 1979-12-03 1981-07-13
JPS6014117U (en) * 1983-07-06 1985-01-30 タキロン株式会社 breakwater wall
JPH10280333A (en) * 1996-12-20 1998-10-20 Fatzer Ag Protection net against snowfall and rockslide
JP2003261910A (en) * 2002-03-11 2003-09-19 Kaihatsu Concrete Kk Protective body using net and protective structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5589750U (en) * 1978-12-17 1980-06-20
JPS5687517U (en) * 1979-12-03 1981-07-13
JPS6014117U (en) * 1983-07-06 1985-01-30 タキロン株式会社 breakwater wall
JPH10280333A (en) * 1996-12-20 1998-10-20 Fatzer Ag Protection net against snowfall and rockslide
JP2003261910A (en) * 2002-03-11 2003-09-19 Kaihatsu Concrete Kk Protective body using net and protective structure

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