JP5022500B2 - Anti-scouring equipment for pier foundations - Google Patents
Anti-scouring equipment for pier foundations Download PDFInfo
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- JP5022500B2 JP5022500B2 JP2010550596A JP2010550596A JP5022500B2 JP 5022500 B2 JP5022500 B2 JP 5022500B2 JP 2010550596 A JP2010550596 A JP 2010550596A JP 2010550596 A JP2010550596 A JP 2010550596A JP 5022500 B2 JP5022500 B2 JP 5022500B2
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- 238000009991 scouring Methods 0.000 title claims description 32
- 230000002265 prevention Effects 0.000 claims description 32
- 239000012530 fluid Substances 0.000 claims description 27
- 230000000903 blocking effect Effects 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 17
- 230000009189 diving Effects 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims 1
- 230000003628 erosive effect Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000003449 preventive effect Effects 0.000 description 3
- 239000013049 sediment Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/0017—Means for protecting offshore constructions
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/60—Piles with protecting cases
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Foundations (AREA)
- Revetment (AREA)
Description
本発明は、橋脚基礎構造物の洗掘防止装置に関する。 The present invention relates to a scouring prevention device for a pier foundation structure.
通常、橋梁（ｂｒｉｄｇｅ：橋）とは、河川、湖などに設けられて、車両や人々が河川、湖などを渡すときに用いられる高架構造物である。橋梁は、大体上下部に分けられる。橋梁の上部は、車両や人の荷重を直接支持する部位であって、上板の底枠と鋳型で構成される。橋梁の下部は、上部から加えられる荷重を地盤に伝達する部位であって、橋台、橋脚、及び基礎部（杭基礎、ピア基礎など）で構成される。
この時、橋梁において、流れる流体により基礎部または橋脚部位に洗掘が発生する。洗掘とは、流体により川底や川の堤防が削られる現象であって、橋梁の下部である基礎部の周囲に積もる土砂の堆積量よりも土砂の除去量が大きい場合に起きる。図１から図３に示すように、橋脚の基礎構造物に摩擦する河川の流れは、大きく２種類に分けることができる。図１から図３は、橋脚の基礎構造物の侵食及び洗掘が発生する状態を示す典型的な一実施例である。
河川の流れは、先ず、基礎部２０に直接摩擦する直接流れａと、基礎部２０の外部に流れる間接流れｂに分けられる。直接流れａは、基礎部２０の外周面に最初に摩擦してその流れが２つに分けられた後、橋脚基礎構造物の外周面に沿って対称的に流れ、橋脚基礎構造物の後側の外周面で、その２つの流れが摩擦・混合して渦流ｃが発生する。この時、渦流ｃにより、地面の小さい石などが浮遊して基礎部２０を打撃する。このように発生する渦流ｃにより洗掘が起き、河川の地面には侵食が発生する。このような現象により基礎部２０の強度は弱くなり、これは橋梁を崩壊させる原因となる。
In general, a bridge is an elevated structure that is provided in a river, a lake, or the like and used when vehicles or people pass the river, the lake, or the like. The bridge is roughly divided into upper and lower parts. The upper part of the bridge is a part that directly supports the load of a vehicle or a person, and is composed of a bottom frame of an upper plate and a mold. The lower part of the bridge is a part that transmits the load applied from the upper part to the ground, and is composed of an abutment, a pier, and a foundation (pile foundation, peer foundation, etc.).
At this time, in the bridge, scouring occurs at the foundation or pier site due to the flowing fluid. Scouring is a phenomenon in which the bottom of a river or a river bank is cut by a fluid, and occurs when the amount of sediment removed is larger than the amount of sediment deposited around the foundation, which is the lower part of the bridge. As shown in FIGS. 1 to 3, the river flow that rubs against the foundation structure of the pier can be roughly divided into two types. FIG. 1 to FIG. 3 show an exemplary embodiment showing a state in which erosion and scouring of a pier foundation structure occurs.
The flow of the river is first divided into a direct flow a that directly rubs against the foundation 20 and an indirect flow b that flows outside the foundation 20. The direct flow a first rubs against the outer peripheral surface of the foundation portion 20 and is divided into two parts, and then flows symmetrically along the outer peripheral surface of the pier foundation structure. The two flows are rubbed and mixed on the outer peripheral surface of the vortex to generate a vortex c. At this time, a small stone on the ground floats by the eddy current c and strikes the foundation 20. The eddy current c generated in this way causes scouring, and erosion occurs on the ground of the river. Due to such a phenomenon, the strength of the foundation 20 is weakened, which causes the bridge to collapse.
上記課題を解決するために、本発明に係る一実施形態は、橋脚基礎構造物の地面に設けられて橋脚に直接摩擦する河川の直接流れと、橋脚に近づいて流れる間接流れとを１つに集水して、橋脚基礎構造物の下部に流速停止状態の河川の流れを形成することにより、橋脚の外周面と河川の流れとの摩擦を防止することを目的とする。
また、本発明に係る他の実施形態は、橋脚の地面に設置した洗掘防止装置により、河川の流れを流速停止状態に転換して橋脚基礎構造物の地盤の侵食を防止することを目的とする。
また、本発明に係るまた他の実施形態は、流速停止状態を維持する洗掘防止装置の内部で発生する過負荷を最小化することを目的とする。
さらに、本発明に係るまた他の実施形態は、洗掘防止装置の圧力の過負荷を防止するための流れ孔及び遮断板の上部面から漏れた河川の流れが橋脚基礎構造物の後方に向かって速かに流れるようにすることを目的とする。
In order to solve the above problems, an embodiment according to the present invention combines a direct flow of a river that is provided on the ground of a pier foundation structure and directly rubs against the pier and an indirect flow that flows close to the pier. The purpose is to prevent friction between the outer peripheral surface of the pier and the flow of the river by collecting the water and forming a flow of the river with the flow velocity stopped in the lower part of the pier foundation structure.
Another embodiment of the present invention aims to prevent the erosion of the ground of the pier foundation structure by converting the flow of the river to a flow velocity stopped state by the scouring prevention device installed on the ground of the pier. To do.
Another object of the present invention is to minimize an overload that occurs inside a scour prevention device that maintains a flow velocity stop state.
Furthermore, according to another embodiment of the present invention, the flow of the river leaking from the upper surface of the flow hole and the blocking plate for preventing pressure overload of the scouring prevention device is directed toward the rear of the pier foundation structure. The purpose is to make it flow quickly.
本発明の実施例に係る橋脚基礎構造物の洗掘防止装置は、橋梁の荷重を支持する橋脚基礎構造物の洗掘防止装置であって、上記橋脚基礎構造物を囲んでおり、複数の孔が形成されている密閉板と、一面が上記密閉板の一面に連結されており、上記橋脚基礎構造物から所定距離離れ、複数の第１流れ孔が形成されている第１流れ誘導板と、一面が上記密閉板の他面に連結されており、上記橋脚基礎構造物から所定距離離れ、複数の第２流れ孔が形成されている第２流れ誘導板と、上記第１流れ誘導板と上記第２流れ誘導板とを連結し、流体の流れを防ぐ遮断板と、を含み、上記第１流れ誘導板と上記第２流れ誘導板は上記橋脚基礎構造物を基準として互いに対称してもよい。
また、上記密閉板は、第１板部材及び第２板部材を含み、上記第１板部材と上記第２板部材は着脱可能であってもよい。
また、上記橋脚基礎構造物を囲み、一面は地面に載置し、他面は上記流れ誘導板及び上記遮断板に連結されている底板をさらに含むことができる。
また、上記底板は、第３板部材及び第４板部材を含み、上記第３板部材と上記第４板部材は着脱可能であってもよい。
また、一側が上記遮断板と接し、一側の厚さが他側の厚さよりも大きい潜水梁をさらに含むことができる。
また、上記潜水梁の他側から所定距離離れている複数の分岐突起をさらに含むことができる。
また、流体が突き当たる上記遮断板の一面は曲面であってもよい。
上記橋脚基礎構造物の外周面に接し、互いに対称するラウンド状の分類面により上記橋脚基礎構造物に流体の直接的な摩擦を防ぐ分類帯をさらに含むことができる。
また、上記流れ誘導板の表面にゴム層が形成されてもよい。
A scour prevention device for a pier foundation according to an embodiment of the present invention is a scour prevention device for a pier foundation that supports a load of a bridge, and surrounds the pier foundation and includes a plurality of holes. A first flow guide plate in which one surface is connected to one surface of the sealing plate, a predetermined distance away from the pier foundation structure, and a plurality of first flow holes are formed; One surface is connected to the other surface of the sealing plate, is separated by a predetermined distance from the pier foundation structure, a second flow guide plate in which a plurality of second flow holes are formed, the first flow guide plate, and the above A blocking plate that connects the second flow guide plate and prevents a fluid flow, and the first flow guide plate and the second flow guide plate may be symmetrical with respect to the pier foundation structure. .
The sealing plate may include a first plate member and a second plate member, and the first plate member and the second plate member may be detachable.
Further, the base may further include a bottom plate that surrounds the pier foundation structure, one surface is placed on the ground, and the other surface is connected to the flow guide plate and the blocking plate.
The bottom plate may include a third plate member and a fourth plate member, and the third plate member and the fourth plate member may be detachable.
In addition, it is possible to further include a diving beam in which one side is in contact with the blocking plate and the thickness on one side is larger than the thickness on the other side.
In addition, it may further include a plurality of branching protrusions that are separated from the other side of the diving beam by a predetermined distance.
In addition, the one surface of the blocking plate against which the fluid abuts may be a curved surface.
The pier foundation structure may further include a classification band that is in contact with the outer circumferential surface of the pier foundation structure and prevents direct friction of the fluid in the pier foundation structure by symmetrical round classification surfaces.
A rubber layer may be formed on the surface of the flow guide plate.
本発明に係る橋脚基礎構造物の洗掘防止装置は、橋脚基礎構造物の地面に設けられて橋脚に直接摩擦する河川の直接流れと、橋脚に近づいて流れる間接流れとを１つに集水して、橋脚基礎構造物の下部に流速停止状態の河川の流れを形成することにより、橋脚の外周面と河川の流れとの摩擦を防止し、それにより橋脚基礎構造物の侵食を防止できる効果がある。
また、本発明に係る橋脚基礎構造物の洗掘防止装置は、橋脚の地面に洗掘防止装置を設けることにより、橋脚基礎構造物の地盤の侵食を防止できる効果がある。
また、本発明に係る橋脚基礎構造物の流速停止状態による洗掘防止装置の内部圧力の過負荷を最小化することにより、洗掘防止装置の設置強度を向上できる効果がある。
さらに、本発明に係る橋脚基礎構造物の洗掘防止装置は、洗掘防止装置の水圧に対する過負荷を防止するための第１、第２流れ孔及び遮断板の上部面から漏れた河川の流れが橋脚基礎構造物の後方に向かって速かに流れるようにすることで、洗掘防止装置により河川の流れが逆行しない効果がある。
The scouring prevention device for a pier foundation according to the present invention collects a direct flow of a river that is provided on the ground of the pier foundation and directly rubs against the pier and an indirect flow that flows close to the pier into one. By forming a river flow with the flow rate stopped at the bottom of the pier foundation structure, friction between the outer peripheral surface of the pier and the river flow can be prevented, thereby preventing erosion of the pier foundation structure. There is.
Moreover, the scouring prevention device for a pier foundation structure according to the present invention has an effect of preventing erosion of the ground of the pier foundation structure by providing a scouring prevention device on the ground of the pier.
Further, by minimizing the overload of the internal pressure of the scour preventive device due to the flow rate stop state of the pier foundation according to the present invention, there is an effect that the installation strength of the scour preventive device can be improved.
Furthermore, the scour preventive device for the pier foundation according to the present invention is a river flow leaked from the upper surfaces of the first and second flow holes and the blocking plate for preventing overload of the scour preventer against water pressure. By making it flow quickly toward the rear of the pier foundation structure, there is an effect that the river flow does not reverse by the scouring prevention device.
以下、本発明に添付した図面を参照しながら本発明の好ましい一実施例を詳細に説明する。
先ず、図面において、同一の構成要素または部品には同一の参照符号を付して示すことにする。本発明を説明することに当たって、係る公知機能あるいは構成に対する具体的な説明が本発明の要旨を帰って不明にすると判断される場合、その詳細な説明を省略する。
図４は、本発明の一実施例に係る洗掘防止装置を橋脚基礎構造物に設置した状態を示す斜視図である。図５は、本発明の一実施例に係る洗掘防止装置を橋脚基礎構造物に設置した状態を示す正面図であり、図６は、本発明の一実施例に係る洗掘防止装置を橋脚基礎構造物に設置した状態を示す拡大正面図である。また、図9は、本発明の他の実施例に係る洗掘防止装置を橋脚基礎構造物に設置した状態を示す斜視図であり、図10は、本発明の他の実施例に係る洗掘防止装置を橋脚基礎構造物に設置した状態を示す正断面図である。
図４から図6 そして 図9と図10に示すように、一実施例の洗掘防止装置１００は、橋脚基礎構造物１０を囲んで橋脚基礎構造物１０を保護する役割をする。
一実施例の構成要素としては、密閉板１６０、第１流れ誘導板１１０、第２流れ誘導板１１０’、遮断板１2０が含まれる。また、底板１４０、潜水梁１３０、及び分岐突起１３２がさらに含まれる。
先ず、密閉板１６０は橋脚基礎構造物１０を囲む。この時、密閉板１６０は着脱可能な板部材１６０ａ，１６０ｂからなる。板部材１６０ａ，１６０ｂは、板部材１６０ａ，１６０ｂに各々形成された突出部と挿入部を用いて係合したり、溶接により結合したりするなど、様々な方法により結合することができる。
これは橋脚基礎構造物１０を囲む作業を簡単にするためのものである。また、密閉板１６０には密閉板１６０を貫通する複数の孔１６３.161が形成されている。
第１流れ誘導板１１０と第２流れ誘導板１１０’は、それぞれの一面が密閉板１６０の一面に連結されており、橋脚基礎構造物１０を基準として対称して所定距離離れている。この時、第１流れ誘導板１１０と第２流れ誘導板１１０’には各々第１流れ孔１１１と第２流れ孔１１１’が形成されている。
また、第１流れ誘導板１１０と第２流れ誘導板１１０’との表面にはゴム層１１２がコーティングされている。ゴム層１１２は、流体により流れてくる土砂や土石などから一実施例の洗掘防止装置１００を保護するためのものである。
遮断板１2０は、第１流れ誘導板１１０と第２流れ誘導板１１０’に連結されている。この時、遮断板１2０の一面は曲面である。
底板１４０は橋脚基礎構造物１０を囲んでおり、その一面は地面に載置し、他面は第１流れ誘導板１１０、第２流れ誘導板１１０’、及び遮断板１2０に連結されてある。底板１４０は着脱可能な板部材１４０ａ，１４０ｂからなる。これも橋脚基礎構造物１０を囲む作業を簡単にするためのものである。底板１４０は省略してもよい。
上述したように一実施例に係る洗掘防止装置１００は、橋脚基礎構造物１０の地面に底板１４０を配置した後、底板１４０の両側に、流体の流れ方向に第１流れ誘導板１１０と第２流れ誘導板１１０’を垂直に配置する。底板１４０の後方には遮断板１２０を垂直に立てて配置する。そして、第１流れ誘導板１１０、第２流れ誘導板１１０’、及び遮断板１２０の上部面に密閉板１６０を連結する。このように各構成要素が連結された一実施例の洗掘防止装置１００において、各構成要素を連結することにより内部空間１６２が形成される。また、底板１４０の前方部位は開放状態となり、底板１４０の前方部位を介して内部空間１６２に流体が流入される。
内部空間１６２に流体が流入されると、その流体は遮断板１２０により流速が停止した状態で内部空間１６２に留まる。この時、内部空間１６２に流入された流体の流速が停止することにより、河川の直接流れａ及び間接流れｂが内部空間１６２では発生しない。そのため、橋脚の基礎構造物１０の外周面の後方に繰り返し発生した流体の摩擦による洗掘を防止することができる。
また、内部空間１６２に流入し続ける流体により内部空間１６２の水圧が上がることを防止するために、第１流れ誘導板１１０、第２流れ誘導板１１０’に各々第１流れ孔１１１と第２流れ孔１１１’が、密閉板１６０には複数の孔１６３が形成される。第１流れ孔１１１、第２流れ孔１１１’、及び孔１６３を介して内部空間１６２内の流体が外部に流出され、これにより、内部空間１６２で水圧が上がることを防止する。
また、流体が突き当たる遮断板１２０の一面を曲面に形成することにより、内部空間１６２に流入される流体が曲面に沿って回転する。これにより、内部空間１６２内の流体に渦流ｃが発生して内部空間１６２内の水圧を低くすることができる。
また、一実施例では、遮断板１２０の後方に連接する傾斜面１３１を有する潜水梁１３０をさらに含む。傾斜面１３１は、遮断板１２０の一側に接する一側の厚さが他側の厚さよりも大きく形成される。
潜水梁１３０は、第１流れ孔１１１、第２流れ孔１１１’、及び孔１６３を介して少し流出される流体と、密閉板１６０の上部面に沿って流れる流体が潜水梁１３０の傾斜面１３１に沿って橋脚基礎構造物１０の後方に向かって速かに流れるようにする。これは洗掘防止装置１００により流体の流れ方向を逆にしたり流速を遅くしたりして、洗掘防止装置１００に集中する水圧の過負荷を防止するためである。
また、一実施例では、潜水梁１３０の他側から所定距離離れている複数の分岐突起１３２をさらに含む。複数の突起１３２は、複数の列を成すように並べて順次突出している。分岐突起１３２は、潜水梁１３０の傾斜面１３１に沿って流れる流体の流れを分散させる役割をする。分岐突起１３２が流体の流れを分散させることにより、潜水梁１３０の後方に位置する地面の侵食を防止する。
上述したように、河川の地面に設けられる橋脚基礎構造物１０に洗掘防止装置１００を設置することにより、橋脚基礎構造物１０の外周面の崩壊を防止し、その周辺の地面の侵食を防止することができる。これにより、河川が氾濫しても橋脚基礎構造物１０の強度及び耐力構造を維持できるという長所がある。
また、洗掘防止装置１００において、流体が供給される内部空間１６２の入口部分の高さを低くし、その反対方向に向かって傾斜するようにして高さを高く形成することにより、流速が停止したときの流体の圧力に過負荷が発生することを防止することができる。
図7は、本発明のまた他の実施例に係る洗掘防止装置及び分類帯を橋脚基礎構造物に設置した状態を示す斜視図であり、図8は、本発明のまた他の実施例に係る洗掘防止装置及び分類帯を橋脚基礎構造物に設置した状態を示す平断面図である。本発明のまた他の実施例の構成要素は、図４から図6 そして 図9と図10を参照して既に説明した一実施例における構成要素とほぼ同様であるため、これらに対する詳細な説明は省略する。
図7と図8に示すように、河川の上流側の流れを受ける橋脚基礎構造物１０の外周面には、河川の流れを分けるように、互いに対称するラウンド状の分類面１５１を有する分類帯１５０を立設することにより、河川の上流側の流れが直接的に橋脚基礎構造物に摩擦することを防止する。
以上、本発明を実施の形態を用いて説明したが、本発明の技術的範囲は上記実施の形態に記載の範囲には限定されない。上記実施の形態に、多様な変更または改良を加えることが可能であることが当業者に明らかである。その様な変更または改良を加えた形態も本発明の技術的範囲に含まれ得ることが、特許請求の範囲の記載から明らかである。
Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
First, in the drawings, the same components or parts are denoted by the same reference numerals. In describing the present invention, when it is determined that a specific description of such a known function or configuration is unclear due to the gist of the present invention, a detailed description thereof will be omitted.
FIG. 4 is a perspective view showing a state in which the scour preventing device according to one embodiment of the present invention is installed on the pier foundation structure. FIG. 5 is a front view showing a state in which the scour preventing apparatus according to one embodiment of the present invention is installed on the pier foundation structure, and FIG. 6 shows the scour preventing apparatus according to one embodiment of the present invention. It is an enlarged front view which shows the state installed in the foundation structure. FIG. 9 is a perspective view showing a state in which a scour preventing device according to another embodiment of the present invention is installed in a pier foundation structure, and FIG. 10 is a scour according to another embodiment of the present invention. It is front sectional drawing which shows the state which installed the prevention apparatus in the pier foundation structure.
As shown in FIGS. 4 to 6 and FIGS. 9 and 10, the scour preventing apparatus 100 according to an embodiment serves to protect the pier foundation structure 10 by surrounding the pier foundation structure 10.
The components of one embodiment include a sealing plate 160, a first flow guide plate 110, a second flow guide plate 110 ′, and a blocking plate 120. Further, a bottom plate 140, a diving beam 130, and a branching protrusion 132 are further included.
First, the sealing plate 160 surrounds the pier foundation structure 10. At this time, the sealing plate 160 includes detachable plate members 160a and 160b. The plate members 160a and 160b can be coupled by various methods such as engagement using protrusions and insertion portions formed on the plate members 160a and 160b, or coupling by welding.
This is for simplifying the work surrounding the pier foundation structure 10. The sealing plate 160 is formed with a plurality of holes 163.161 penetrating the sealing plate 160.
One surface of each of the first flow guide plate 110 and the second flow guide plate 110 ′ is connected to one surface of the sealing plate 160, and is symmetrically separated from the pier foundation structure 10 by a predetermined distance. At this time, a first flow hole 111 and a second flow hole 111 ′ are formed in the first flow guide plate 110 and the second flow guide plate 110 ′, respectively.
Further, a rubber layer 112 is coated on the surfaces of the first flow guide plate 110 and the second flow guide plate 110 ′. The rubber layer 112 is for protecting the scouring prevention apparatus 100 of one embodiment from earth and sand or earth and stone flowing by a fluid.
The blocking plate 120 is connected to the first flow guide plate 110 and the second flow guide plate 110 ′. At this time, one surface of the blocking plate 120 is a curved surface.
The bottom plate 140 surrounds the pier foundation structure 10, one surface of which is placed on the ground, and the other surface is connected to the first flow guide plate 110, the second flow guide plate 110 ′, and the blocking plate 120. The bottom plate 140 includes detachable plate members 140a and 140b. This is also for simplifying the work surrounding the pier foundation structure 10. The bottom plate 140 may be omitted.
As described above, the scour preventing apparatus 100 according to the embodiment includes the first flow guide plate 110 and the first flow guide plate 110 in the fluid flow direction on both sides of the bottom plate 140 after the bottom plate 140 is disposed on the ground of the pier foundation structure 10. Two flow guide plates 110 ′ are arranged vertically. Behind the bottom plate 140, the blocking plate 120 is vertically arranged. The sealing plate 160 is connected to the upper surfaces of the first flow guide plate 110, the second flow guide plate 110 ′, and the blocking plate 120. In the scouring prevention apparatus 100 according to the embodiment in which the respective components are connected in this manner, the internal space 162 is formed by connecting the respective components. In addition, the front portion of the bottom plate 140 is in an open state, and the fluid flows into the internal space 162 through the front portion of the bottom plate 140.
When fluid flows into the internal space 162, the fluid remains in the internal space 162 with the flow rate stopped by the blocking plate 120. At this time, since the flow velocity of the fluid flowing into the internal space 162 stops, the direct flow a and the indirect flow b of the river do not occur in the internal space 162. Therefore, it is possible to prevent scouring due to friction of the fluid repeatedly generated behind the outer peripheral surface of the foundation structure 10 of the pier.
In addition, in order to prevent the water pressure in the internal space 162 from increasing due to the fluid that continues to flow into the internal space 162, the first flow hole 111 and the second flow in the first flow guide plate 110 and the second flow guide plate 110 ′, respectively. A plurality of holes 163 are formed in the hole 111 ′ and the sealing plate 160. The fluid in the internal space 162 flows out to the outside through the first flow hole 111, the second flow hole 111 ′, and the hole 163, thereby preventing the water pressure from increasing in the internal space 162.
Further, by forming one surface of the blocking plate 120 against which the fluid abuts into a curved surface, the fluid flowing into the internal space 162 rotates along the curved surface. Thereby, the eddy current c is generated in the fluid in the internal space 162, and the water pressure in the internal space 162 can be lowered.
In addition, the embodiment further includes a diving beam 130 having an inclined surface 131 connected to the rear of the blocking plate 120. The inclined surface 131 is formed such that the thickness on one side contacting one side of the blocking plate 120 is larger than the thickness on the other side.
In the diving beam 130, the fluid that slightly flows out through the first flow hole 111, the second flow hole 111 ′, and the hole 163 and the fluid that flows along the upper surface of the sealing plate 160 are inclined surfaces 131 of the diving beam 130. It flows so that it may flow quickly toward the back of the pier foundation structure 10 along. This is to prevent the overload of water pressure concentrated on the scouring prevention device 100 by reversing the flow direction of the fluid or slowing the flow velocity by the scouring prevention device 100.
In addition, the embodiment further includes a plurality of branching protrusions 132 that are separated from the other side of the diving beam 130 by a predetermined distance. The plurality of protrusions 132 are sequentially projected so as to form a plurality of rows. The branching protrusion 132 serves to disperse the flow of fluid flowing along the inclined surface 131 of the diving beam 130. The branching protrusion 132 disperses the flow of the fluid, thereby preventing erosion of the ground located behind the diving beam 130.
As described above, by installing the scouring prevention device 100 on the pier foundation structure 10 provided on the ground of the river, the outer peripheral surface of the pier foundation structure 10 is prevented from collapsing and the surrounding ground is prevented from being eroded. can do. Thereby, even if a river overflows, there exists an advantage that the intensity | strength and proof structure of the pier foundation structure 10 can be maintained.
Further, in the scour prevention apparatus 100, the flow velocity is stopped by reducing the height of the inlet portion of the internal space 162 to which the fluid is supplied and increasing the height so as to incline in the opposite direction. It is possible to prevent an overload from occurring in the fluid pressure.
FIG. 7 is a perspective view showing a state in which the scour preventing device and the classification zone according to another embodiment of the present invention are installed on the pier foundation structure, and FIG. 8 is a diagram illustrating another embodiment of the present invention. It is a plane sectional view which shows the state which installed the scour prevention apparatus and classification zone which concern on the pier foundation structure. The components of another embodiment of the present invention are substantially the same as those of the embodiment already described with reference to FIGS. 4 to 6 and FIGS. 9 and 10. Omitted.
As shown in FIG. 7 and FIG. 8, a classification band having round classification surfaces 151 symmetrical to each other so as to divide the river flow on the outer peripheral surface of the pier foundation structure 10 receiving the upstream flow of the river. By standing 150, the flow on the upstream side of the river is prevented from directly rubbing against the pier foundation structure.
As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.
１０ 橋脚基礎構造物
２０ 基礎部
１００ 洗掘防止装置
１１０ 第１流れ誘導板
１１０’ 第２流れ誘導板
１１１ 第１流れ孔
１１１’ 第２流れ孔
１１２ ゴム層
１２０ 遮断板
１２１ 渦流形成突起
１３０ 潜水梁
１３１ 傾斜面
１３２ 分岐突起
１４０ 底板
１４０ａ 第１板部材
１４０ｂ 第２板部材
１５０ 分類帯
１５１ 分類面
１６０ 密閉板
１６０ａ 第３板部材
１６０ｂ 第４板部材
１６２ 内部空間
ａ 直接流れ
ｂ 間接流れ
ｃ 渦流
DESCRIPTION OF SYMBOLS 10 Pier foundation 20 Base part 100 Scour prevention apparatus 110 1st flow guide plate 110 '2nd flow guide plate 111 1st flow hole 111' 2nd flow hole 112 Rubber layer 120 Blocking plate 121 Eddy current formation protrusion 130 Submersible beam 131 Inclined surface 132 Branch protrusion 140 Bottom plate 140a First plate member 140b Second plate member 150 Classification band 151 Classification surface 160 Sealing plate 160a Third plate member 160b Fourth plate member 162 Internal space a Direct flow b Indirect flow c Eddy current
Claims (9)
前記橋脚基礎構造物を囲んでおり、複数の孔が形成されている密閉板と、
一面が前記密閉板の一面に連結されており、前記橋脚基礎構造物から所定距離離れ、複数の第１流れ孔が形成されている第１流れ誘導板と、
一面が前記密閉板の他面に連結されており、前記橋脚基礎構造物から所定距離離れ、複数の第２流れ孔が形成されている第２流れ誘導板と、
前記第１流れ誘導板と前記第２流れ誘導板とを連結し、流体の流れを防ぐ遮断板と、
を含み、
前記第１流れ誘導板と前記第２流れ誘導板は、前記橋脚基礎構造物を基準として互いに対称することを特徴とする橋脚基礎構造物の洗掘防止装置。A scouring prevention device for a pier foundation supporting a load of a bridge,
A sealing plate surrounding the pier foundation structure and having a plurality of holes formed therein;
A first flow guide plate having one surface connected to one surface of the sealing plate, a predetermined distance away from the pier foundation structure, and a plurality of first flow holes formed;
A second flow guide plate having one surface connected to the other surface of the sealing plate, separated from the pier foundation by a predetermined distance, and formed with a plurality of second flow holes;
A blocking plate that connects the first flow guide plate and the second flow guide plate to prevent fluid flow;
Including
The scour prevention apparatus for a pier foundation, wherein the first flow guide plate and the second flow guide plate are symmetrical to each other with respect to the pier foundation structure.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2008-0024013 | 2008-03-14 | ||
| KR1020080024013A KR100982023B1 (en) | 2008-03-14 | 2008-03-14 | Apparatus for preventing scour on bridge pier foundation |
| PCT/KR2009/001241 WO2009113817A2 (en) | 2008-03-14 | 2009-03-12 | Scour preventive apparatus for pier foundation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2011516756A JP2011516756A (en) | 2011-05-26 |
| JP5022500B2 true JP5022500B2 (en) | 2012-09-12 |
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ID=41065672
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010550596A Expired - Fee Related JP5022500B2 (en) | 2008-03-14 | 2009-03-12 | Anti-scouring equipment for pier foundations |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20110016644A1 (en) |
| EP (1) | EP2270283A4 (en) |
| JP (1) | JP5022500B2 (en) |
| KR (1) | KR100982023B1 (en) |
| CN (1) | CN101970760B (en) |
| WO (1) | WO2009113817A2 (en) |
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| CN103556658A (en) * | 2013-11-14 | 2014-02-05 | 中国海洋石油总公司 | Scour-prevention structure of underwater infrastructure |
| JP6400424B2 (en) * | 2014-10-10 | 2018-10-03 | 五洋建設株式会社 | Work box and water stop method for work box |
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| CN109914224B (en) * | 2019-04-18 | 2021-01-12 | 台州佳沃科技有限公司 | Assembled bridge substructure |
| CN110656588B (en) * | 2019-10-12 | 2021-03-26 | 孔令绅 | Portable supporting and protecting structure for elevated road and bridge and assembling method thereof |
| CN111424730B (en) * | 2020-03-18 | 2021-07-02 | 石家庄铁道大学 | Comb flow tooth device for resisting scouring of heavy-duty railway bridge pier column foundation |
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| CN114197299B (en) * | 2022-01-07 | 2024-01-26 | 中铁大桥勘测设计院集团有限公司 | Pier with subregion vortex that disappears and scour protection assembled guard ring |
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| KR102543637B1 (en) * | 2022-10-05 | 2023-06-14 | 한국해양과학기술원 | pier for marine bridge with function of scour protection |
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- 2009-03-12 CN CN2009801090445A patent/CN101970760B/en not_active Expired - Fee Related
- 2009-03-12 WO PCT/KR2009/001241 patent/WO2009113817A2/en active Application Filing
- 2009-03-12 EP EP09719723A patent/EP2270283A4/en not_active Withdrawn
- 2009-09-14 US US12/922,507 patent/US20110016644A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009113817A3 (en) | 2010-01-14 |
| CN101970760A (en) | 2011-02-09 |
| JP2011516756A (en) | 2011-05-26 |
| EP2270283A2 (en) | 2011-01-05 |
| EP2270283A4 (en) | 2013-03-20 |
| CN101970760B (en) | 2012-03-21 |
| US20110016644A1 (en) | 2011-01-27 |
| KR20090098554A (en) | 2009-09-17 |
| KR100982023B1 (en) | 2010-09-13 |
| WO2009113817A2 (en) | 2009-09-17 |
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