KR102157976B1 - underwater structure to be connected to pile foundation by using bracket - Google Patents

underwater structure to be connected to pile foundation by using bracket Download PDF

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KR102157976B1
KR102157976B1 KR1020200001097A KR20200001097A KR102157976B1 KR 102157976 B1 KR102157976 B1 KR 102157976B1 KR 1020200001097 A KR1020200001097 A KR 1020200001097A KR 20200001097 A KR20200001097 A KR 20200001097A KR 102157976 B1 KR102157976 B1 KR 102157976B1
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bracket
pile foundation
underwater structure
underwater
casing
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KR1020200001097A
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Korean (ko)
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채봉철
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채봉철
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/16—Arrangement or construction of joints in foundation structures
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/16—Sealings or joints
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/52—Submerged foundations, i.e. submerged in open water
    • 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
    • E02B2017/0039—Methods for placing the offshore structure
    • E02B2017/0043—Placing the offshore structure on a pre-installed foundation structure
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/20—Miscellaneous comprising details of connection between elements

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Foundations (AREA)

Abstract

The present invention provides a structure, which installs a bracket of a pile foundation, fixes the bracket and the pile foundation by a filler, mounts the underwater structure on the bracket, and couples the underwater structure to the pile foundation when the steel or concrete underwater structure used in a wind power plant, a bridge, a revetment, a breakwater and a submerged tunnel is installed on the pile foundation. The underwater structure is coupled under the water by using the bracket after the pile foundation is pre-constructed, thereby shortening a construction period and improving a bonding quality of the underwater structure.

Description

브라켓을 이용하여 말뚝기초와 결합하는 수중 구조물{underwater structure to be connected to pile foundation by using bracket}Underwater structure to be connected to pile foundation by using bracket}

본 발명은 풍력, 호안, 방파제, 교량, 케이슨, 터널을 시공하기 위해 강재 또는 철근 콘크리트로 만들어진 구조물을 수중에 있는 말뚝기초와에 결합하는 수중 구조물로써, 더욱 상세하게는 육상에서 구조물을 만들어 설치 위치로 운반하고 수중에 설치되어있는 말뚝기초에 설치된 브라켓 위에 안착을 하고, 말뚝기초와 구조물을 수중에서 결합하는 구조물에 관한 것이다.The present invention is an underwater structure that combines a structure made of steel or reinforced concrete with a pile foundation in the water to construct wind power, revetment, breakwater, bridges, caissons, and tunnels. It relates to a structure that is transported to and seated on a bracket installed on a pile foundation installed underwater, and combines the pile foundation and the structure underwater.

해상 풍력의 자켓 기초, 교량의 풋팅 기초, 방파제의 케이슨 기초 또는 해저에 설치되는 수중터널 등의 수중 구조물의 기능을 위해 말뚝기초와 결합을 한다. 수중에서 결합하기 때문에 여러 가지 가시설이 필요하고 공사기간이 길어 공사비가 높아지고 있다.It is combined with the pile foundation for the function of underwater structures such as the jacket foundation of offshore wind power, the footing foundation of the bridge, the caisson foundation of the breakwater, or the underwater tunnel installed on the sea floor. Because it is combined underwater, various temporary facilities are required and the construction period is long, resulting in high construction costs.

여기에 대한 종래의 기술로 "해상 풍력 발전기의 지지 구조물 및 그 설치 방법(10-2011-0112795)"와 "해상 풍력 발전 콘크리트 기초 구조물 및 그 제조 방법과 설치 방법(10-2013-0119811)" 그리고 "수중 교각 기초 시공을 위한 하우징 브라켓 및 이를 이용한 수중 교각 시공 방법"이 있다.As a conventional technology for this, "a supporting structure of an offshore wind power generator and its installation method (10-2011-0112795)" and "a concrete foundation structure for offshore wind power generation and its manufacturing method and installation method (10-2013-0119811)" and There is a "housing bracket for the foundation construction of an underwater pier and a method of constructing an underwater pier using the same".

그러나 전술한 두 개의 등록 특허 기술은 구조물을 먼저 설치한 상태에서 말뚝기초를 나중에 설치해야 하며, 마지막 등록 특허 기술은 교량에서 말뚝기초에 브라켓을 설치하는데 말뚝기초의 케이싱과 브라켓을 수상에서 용접을 한다. However, the two patented technologies mentioned above require the installation of the pile foundation after the structure is installed first, and the last registered patented technology installs the bracket on the pile foundation in the bridge, and the casing and the bracket of the pile foundation are welded from the water. .

해상 구조물을 설치하기 위해서는 해상 크레인의 작업 한계상 좋은 기상 조건을 기다려야 하는데, 특히 풍력 설치 장소는 기상이 나쁘기 때문에, 작업 일수가 매우 적어질 수밖에 없다. 그래서 구조물을 설치한 이후에 말뚝기초를 시공을 하면 (구조물 설치 + 말뚝기초 설치) 기간이 연속적으로 적용되기 때문에 전체 공기가 늘어나는 문제점이 발생한다.In order to install the offshore structure, it is necessary to wait for good weather conditions due to the working limit of the offshore crane. In particular, the wind power installation site has bad weather, so the number of working days is inevitably reduced. So, if the pile foundation is constructed after the structure is installed, the total amount of air is increased because the period (structure installation + pile foundation installation) is applied continuously.

KRKR 10-2011-011279510-2011-0112795 AA KRKR 10-2013-011981110-2013-0119811 AA KRKR 10-144056610-1440566 B1B1

종래의 수중 구조물을 먼저 시공하고 말뚝을 시공을 하는 방법에 있어, 수중 구조물이 완성될 때까지 해상에서 말뚝기초 시공을 하지 못하고, 구조물이 완성된 후에는 현장에 설치한 후 말뚝기초 공사를 할 수 있어 공기가 많이 소요된다. 이에 따른 해상 장비의 대기가 길어지면서 공사비가 올나가는 단점이 있다. In the conventional method of constructing an underwater structure first and then constructing a pile, it is not possible to construct the pile foundation at sea until the underwater structure is completed, and after the structure is completed, it is possible to install it on the site and then perform the pile foundation construction. It takes a lot of air. Accordingly, there is a disadvantage that construction costs increase as the atmosphere of the offshore equipment increases.

이러한 과제를 해결하기 위해, 본 발명은 케이싱을 포함하여 수중 지반에 시공되는 말뚝기초, 상기 케이싱의 외면을 상하가 개방된 공간을 형성하며 둘러싸며, 상기 케이싱을 따라 하강하여 수중 지반과 접촉을 하는 브라켓, 상기 브라켓 내면과 케이싱 외면과의 공간을 채우는 채움재와 일측은 수상에 노출되며 타측은 상기 브라켓에 안착하고 강재, 콘크리트, 그라우트, 몰탈 중 최소 어느 하나를 포함하는 결합재를 포함하는 브라켓을 이용하여 말뚝기초와 결합하는 수중 구조물을 통하여 달성이 되며,In order to solve these problems, the present invention is a pile foundation constructed on the underwater ground including a casing, surrounding the outer surface of the casing to form an open space, and descending along the casing to make contact with the underwater ground. Using a bracket, a filler that fills the space between the inner surface of the bracket and the outer surface of the casing, and one side is exposed to the water, and the other side is seated on the bracket and includes a binding material including at least one of steel, concrete, grout, and mortar. It is achieved through an underwater structure that combines with the pile foundation,

또한, 본 발명은 상기 브라켓의 내면과 케이싱의 외면 사이의 공간을 채우는 채움재의 마찰 저항력을 증대하는, 상기 브라켓의 내면 또는 상기 케이싱의 외면에 구비되는 요철을 더 포함하는 것이 바람직하며,In addition, it is preferable that the present invention further includes irregularities provided on the inner surface of the bracket or the outer surface of the casing, which increases the frictional resistance of the filler filling the space between the inner surface of the bracket and the outer surface of the casing,

또한, 일단은 상기 브라켓 또는 말뚝기초에 연결되고 타단은 상향으로 향하여 상기 수중 구조물이 하강할 때 수중 구조물과 접촉하여 위치를 유도하는 가이드를 더 포함하는 것이 바람직하며,In addition, it is preferable that one end is connected to the bracket or the pile foundation, and the other end is directed upward, further comprising a guide for inducing a position by contacting the underwater structure when the underwater structure descends,

또한, 수중 구조물의 하부에 구비되며, 상기 수중 구조물이 브라켓에 안착한 후 상기 결합재가 채워지기 전에 일단은 상기 수중 구조물에 결합하고 타단은 상기 말뚝기초 내부에 정착하는 전단 보강재를 포함하여 달성을 한다.In addition, it is provided in the lower part of the underwater structure, and after the underwater structure is seated on the bracket, before the binder is filled, one end is coupled to the underwater structure and the other end is achieved by including a shear reinforcement that is settled inside the pile foundation.

본 발명의 효과로는,As an effect of the present invention,

1. 수중 말뚝기초에 브라켓을 설치할 때 채움재를 이용하므로 용접 방법에 비해 공사를 신속하게 할 수 있다.1. When installing the bracket on the underwater pile foundation, the filling material is used, so the construction can be done more quickly than the welding method.

2. 기초 시공이 끝나면, 기상이 좋은 날을 기다려 한꺼번에 구조물를 말뚝기초 위에 시공할 수 있어, 기상 영향으로 대기하는 일수가 적어진다.2. After the foundation construction is finished, the number of days to wait due to the weather effect can be reduced because the structure can be installed on the pile foundation at once by waiting for the good weather.

3. 육상 제작으로, 품질이 좋아지고 공사비가 저렴해진다.3. By land production, quality is improved and construction cost is cheaper.

4. 말뚝기초를 케이슨과 침매터널에 적용할 수 있다.4. Pile foundation can be applied to caisson and immersion tunnel.

도 1은 말뚝기초와 브라켓의 시공 예시도
도 2는 다양한 수중 구조물 예시도.
도 3a 내지 도 3c는 수중에서 브라켓을 이용한 말뚝기초와 수중 구조물 결합 예시도.
도 4는 수중구조물과 말뚝기초의 접합 예시도.1 is an exemplary view of a pile foundation and a bracket construction
Figure 2 is an exemplary view of various underwater structures.
Figures 3a to 3c is an exemplary view of combining a pile foundation and an underwater structure using a bracket in the water.
Figure 4 is an exemplary view of the connection of the underwater structure and the pile foundation.

이하, 첨부된 도면을 이용하여 본 발명에 대해서 상세하게 설명을 하고자 한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 수중에 말뚝기초(10)를 시공을 하고, 말뚝기초의 케이싱(11)의 외면에 설치되는 브라켓(20)을 예시한다.1 illustrates a bracket 20 installed on the outer surface of a pile foundation 10 to be constructed underwater and the casing 11 of the pile foundation.

여기서 말뚝기초(10)는 현장타설 말뚝이 바람직하며, 작업 방법은 케이싱을 수중 지반에 시공하고 케이싱 속 파기를 한 후, 케이싱 하부의 암반을 천공을 하고 철근망을 삽입을 하고 콘크리트를 타설한다.Here, the pile foundation 10 is preferably a cast-in-place pile, and the working method is to construct the casing in the underwater ground and digging in the casing, then drill the rock under the casing, insert a reinforcing bar, and pour concrete.

케이싱(11) 외면과 공간(12)을 두고 설치되는 브라켓(20)은 철근 콘크리트 또는 강재를 중 어느 하나 이상을 포함하여 제작하는 것이 바람직하다.The bracket 20 installed with the outer surface of the casing 11 and the space 12 is preferably manufactured including any one or more of reinforced concrete or steel.

또한, 브라켓의 상면에는 지수재(도면 미도시)를 설치하여 후술 될 수중 구조물과 접합면을 차수하는 것이 바람직하다. In addition, it is preferable to install a water-stop material (not shown) on the upper surface of the bracket to order the underwater structure and the bonding surface to be described later.

그리고 브라켓(20)의 안쪽 면에 생긴 공간(12)은 채움재(21)를 채워서 케이싱(11)과 브라켓(20)이 일체화 하는 것이 바람직하다. 채움재(21)로는 시멘트 계열 재료로 그라우팅, 몰탈, 콘크리트를 불분리 혼화재와 섞어서 사용하는 것이 바람직하고, 그 밖에 물에서 사용할 수 있는 에폭시 계열과 우레탄 계열의 접착용 재료를 사용할 수 있다.And it is preferable that the space 12 created on the inner surface of the bracket 20 is filled with the filler 21 so that the casing 11 and the bracket 20 are integrated. As the filling material 21, it is preferable to mix grouting, mortar, and concrete as a cement-based material with a non-separable admixture, and other epoxy-based and urethane-based adhesive materials that can be used in water may be used.

채움재(21)의 마찰 저항력을 높이기 위해서 케이싱(11)의 외면 또는 브라켓(20)의 내면에 요철(22)을 형성하는 것이 바람직하다. 요철(22)은 강재나 철근을 접합하여 사용할 수 있고 케이싱(11) 또는 브라켓(20)의 형상에 굴곡을 주는 것도 가능하다.In order to increase the frictional resistance of the filling material 21, it is preferable to form the unevenness 22 on the outer surface of the casing 11 or the inner surface of the bracket 20. The irregularities 22 may be used by bonding steel or reinforcing bars, and it is also possible to give a bend to the shape of the casing 11 or the bracket 20.

도 1의 (a), (b), (c)는 브라켓(20)을 말뚝기초의 케이싱(11)을 따라서 수중 지반에 설치하고 브라켓(20)과 케이싱(11) 사이의 공간(12)에 채움재(21)를 채워 시공을 하는 것을 예시하고 있다.In Figure 1 (a), (b), (c), the bracket (20) is installed in the underwater ground along the casing (11) of the pile foundation, and in the space (12) between the bracket (20) and the casing (11). Filling the filling material 21 is illustrated to perform construction.

도 2의 (d) 내지 (h)는 다양한 목적의 수중 구조물(30)과 수중 구조물과 말뚝기초의 결합 위치(40)를 예시한다. 도 2의 (d)는 해상 자켓 구조물의 측면에 결합 위치(40)가 있고, (e)는 해상 자켓 구조물의 하부에 결합 위치(40)가 있되 결합 위치(40)가 말뚝기초의 케이싱(11) 내부로 삽입되는 형상이고, (f)는 (e)와 달리 말뚝기초를 감싸는 결합 위치(40)를 가지고 있다.2 (d) to (h) illustrate the underwater structure 30 for various purposes and the coupling position 40 of the underwater structure and the pile foundation. In (d) of Figure 2 is the coupling position 40 on the side of the marine jacket structure, (e) is the coupling position 40 in the lower part of the marine jacket structure, but the coupling position 40 is the casing 11 of the pile foundation ) It is a shape that is inserted into the inside, and (f) has a coupling position (40) surrounding the pile foundation unlike (e).

도 2의 (g)는 교량의 풋팅과 피어 부분을 예시하고 있으며, 상기 풋팅의 바람직한 결합 위치(40)를 예시하고 있다.2 (g) illustrates the footing and the pier portion of the bridge, and illustrates a preferred coupling position 40 of the footing.

도 2의 (h)는 호안이나 방파제 또는 해상 풍력 기초로 사용하는 케이슨 기초를 예시하고, 여기서 결합 위치(40)는 케이슨의 하부 슬라브에 구비되는 것이 바람직하다.Figure 2 (h) illustrates a caisson foundation used as a shoreline or breakwater or offshore wind power foundation, wherein the coupling position 40 is preferably provided on the lower slab of the caisson.

도 3a 내지 도 3c는 수중에 설치된 브라켓(20)에 안착한 수중 구조물(30)과 말뚝기초(10)를 결합재(14)를 이용하여 접합하는 예시도이다. 도 3a 내지 도 3c에서 각각의 (a)는 말뚝기초(10)와 수중 구조물(30)을 철물(13)로 연결한 예시도이고, (b)는 콘크리트, 몰탈, 그라우팅 중 어느 하나 결합재(14)를 이용하여 말뚝기초(10)와 수중 구조물(30)을 결합한 예시도이다.3A to 3C are exemplary views in which the underwater structure 30 seated on the bracket 20 installed in the water and the pile foundation 10 are joined using a binder 14. In Figures 3a to 3c, each (a) is an exemplary diagram connecting the pile foundation 10 and the underwater structure 30 with a hardware 13, and (b) is any one of concrete, mortar, and grouting binder 14 ) Is an exemplary view in which the pile foundation 10 and the underwater structure 30 are combined.

말뚝기초(10)와 수중 구조물(30)의 결합을 위한 추가 구성요소로는 도 3c에서 도시하는 전단 보강재(31)가 있다. 전단 보강재(31)는 말뚝기초(10)와 수중 구조물(30)의 결합력을 높이는 역할을 한다. 전단 보강재(31)의 일측은 수중 구조물(30)에 구비가 되고 타측은 말뚝기초(10)의 내부로 삽입되어 정착하는 것이 바람직하다.As an additional component for coupling the pile foundation 10 and the underwater structure 30, there is a shear reinforcement 31 shown in FIG. 3C. The shear reinforcement 31 serves to increase the bonding force between the pile foundation 10 and the underwater structure 30. It is preferable that one side of the shear reinforcement 31 is provided in the underwater structure 30 and the other side is inserted into the inside of the pile foundation 10 to settle.

도 4의 (i)는 수중 구조물(30)이 말뚝기초(10)를 따라 하강하는 예시이다. 여기서 수중 구조물(30)의 위치를 유도하기 위해 브라켓(20)에 강재 또는 콘크리트로 된 가이드(23)를 설치하는 것이 바람직하다. 가이드(23)는 브라켓(20)에 고정되어 하강하는 수중 구조물(30)과 접촉을 하고, 수중 구조물(30)을 설계 위치로 움직이도록 유도한다.4(i) is an example in which the underwater structure 30 descends along the pile foundation 10. Here, it is preferable to install a guide 23 made of steel or concrete on the bracket 20 in order to guide the position of the underwater structure 30. The guide 23 is fixed to the bracket 20 to make contact with the descending underwater structure 30 and induces the underwater structure 30 to move to the design position.

여기서, 가이드(23)의 일단은 브라켓(20) 또는 말뚝기초(10)에 설치되고 타단은 수중 또는 수상으로 노출되는 것이 바람직하다.Here, it is preferable that one end of the guide 23 is installed on the bracket 20 or the pile foundation 10 and the other end is exposed to water or water.

또한, 전단 보강재(31)는, 수중 구조물(30)에 설치한 채 하강한다. 그리고 수중 구조물은 브라켓(20) 위에 안착하고, 말뚝기초(10)의 철물(13)과 교차하며, 이 후 결합재(14)가 타설되어 말뚝기초와 결합한다.In addition, the shear reinforcing material 31 descends while being attached to the underwater structure 30. And the underwater structure is seated on the bracket 20, intersects with the hardware 13 of the pile foundation 10, after which the bonding material 14 is poured and combined with the pile foundation.

10: 말뚝기초
11: 케이싱 12: 공간 13: 철물
20: 브라켓
21: 채움재 22: 요철 23: 가이드
30: 수중 구조물 31: 전단 보강재
40: 결합 위치10: pile foundation
11: casing 12: space 13: hardware
20: bracket
21: filling material 22: irregularities 23: guide
30: underwater structure 31: shear reinforcement
40: bonding position

Claims (4)

케이싱(11)을 수중 지반에 시공하되, 상기 케이싱(11)의 항두가 수중에 노출되는 말뚝기초(10);
상기 케이싱(11)의 외면과는 공간(12)을 두고 둘러싸며 하면은 수중의 지반에 접촉하여 상기 공간(12)의 하부를 폐쇄하되 상기 공간(12)의 상부는 개방되며, 상면에 지수재를 구비하는 브라켓(20);
상기 브라켓(20)의 내면과 케이싱(11)의 외면의 마찰 저항력을 증대하기 위해, 상기 브라켓(20)의 내면 또는 상기 케이싱(11)의 외면에 구비되는 요철(22);
상기 브라켓(20) 내면과 케이싱(11) 외면과의 공간(12)을 채우는 채움재(21);
일측은 수상에 노출되며 타측은 상기 브라켓(20)에 안착하고 강재, 콘크리트, 그라우트, 몰탈 중 최소 어느 하나 이상을 포함하는 결합재(14)를 이용하여 말뚝기초(10)와 결합하는 수중 구조물(30);
일단은 상기 브라켓(20) 또는 말뚝기초(10)에 설치되고, 타단은 상향으로 향하여 상기 수중 구조물(30)이 하강할 때 수중에서 수중 구조물(30)과 접촉하여 위치를 유도하는 가이드(23);
상기 수중 구조물(30)의 하부에 구비되며, 수중 구조물(30)이 브라켓(20)에 안착한 후, 상기 수중 구조물(30)과 상기 말뚝 기초(10)의 철물을 겹칩하는 전단 보강재(31);를 포함하는 브라켓을 이용하여 말뚝기초와 결합하는 수중 구조물.The casing 11 is constructed on the underwater ground, but the pile foundation 10 in which the port of the casing 11 is exposed to the water;
The outer surface of the casing 11 is surrounded by a space 12, and the lower surface contacts the underwater ground to close the lower part of the space 12, but the upper part of the space 12 is open, Bracket 20 having a;
In order to increase the frictional resistance between the inner surface of the bracket 20 and the outer surface of the casing 11, irregularities 22 provided on the inner surface of the bracket 20 or the outer surface of the casing 11;
A filling material 21 filling the space 12 between the inner surface of the bracket 20 and the outer surface of the casing 11;
One side is exposed to the water, and the other side is seated on the bracket 20, and the underwater structure 30 coupled with the pile foundation 10 using a bonding material 14 containing at least one of steel, concrete, grout, and mortar. );
One end is installed on the bracket 20 or the pile foundation 10, and the other end is directed upward and when the underwater structure 30 descends, a guide 23 that contacts the underwater structure 30 and guides the position ;
A shear stiffener 31 provided under the underwater structure 30 and for overlapping the underwater structure 30 and the hardware of the pile foundation 10 after the underwater structure 30 is seated on the bracket 20; An underwater structure that is combined with the pile foundation using a bracket comprising a. 삭제delete 삭제delete 삭제delete
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