KR20180046706A - Welded structure apllied to upper deck support of container ship - Google Patents

Welded structure apllied to upper deck support of container ship Download PDF

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KR20180046706A
KR20180046706A KR1020160142211A KR20160142211A KR20180046706A KR 20180046706 A KR20180046706 A KR 20180046706A KR 1020160142211 A KR1020160142211 A KR 1020160142211A KR 20160142211 A KR20160142211 A KR 20160142211A KR 20180046706 A KR20180046706 A KR 20180046706A
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South Korea
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upper deck
insertion member
welded structure
welded
container ship
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KR1020160142211A
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Korean (ko)
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박금기
김성민
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대우조선해양 주식회사
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Priority to KR1020160142211A priority Critical patent/KR20180046706A/en
Publication of KR20180046706A publication Critical patent/KR20180046706A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
    • B63B73/10—Building or assembling vessels from prefabricated hull blocks, i.e. complete hull cross-sections
    • B63B9/06—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/002—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for goods other than bulk goods
    • B63B25/004—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for goods other than bulk goods for containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B3/00—Hulls characterised by their structure or component parts
    • B63B3/14—Hull parts
    • B63B3/48—Decks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B3/00—Hulls characterised by their structure or component parts
    • B63B3/14—Hull parts
    • B63B3/48—Decks
    • B63B3/54—Hatch openings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
    • B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
    • B63B73/43—Welding, e.g. laser welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B2221/00—Methods and means for joining members or elements
    • B63B2221/02—Methods and means for joining members or elements by welding
    • B63B2701/08—
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/10—Measures concerning design or construction of watercraft hulls

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Bridges Or Land Bridges (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

Disclosed is a welded structure applied to an upper deck of a container ship. A welded structure to be applied to an upper deck of a container ship is provided. According to the present invention, an oval insertion member of the same material as the upper decks of the container ship is provided in a corresponding area between the upper decks of the container ship where a brittle crack can spread so that a brittle fracture crack generated at a welding joint and then spreading to a hull shell or hatch coaming can be blocked.

Description

컨테이너선 상갑판에 적용되는 용접 구조체{WELDED STRUCTURE APLLIED TO UPPER DECK SUPPORT OF CONTAINER SHIP}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a welded structure applied to an upper deck of a container ship,

본 발명은 용접 구조체에 관한 것으로, 보다 상세하게는 취성 균열이 전파될 가능성이 있는 컨테이너선의 상갑판 사이의 해당 영역에 상갑판과 동일한 재질의 타원형상에 삽입부재가 구비되어 전파되는 취성 파괴 균열 차단할 수 있는 컨테이너선 상갑판에 적용되는 용접 구조체에 관한 것이다.The present invention relates to a welded structure, and more particularly, to a welded structure capable of preventing brittle fracture crack propagation which is provided with an insertion member on an elliptical shape of the same material as the upper deck plate in a corresponding area between upper and lower decks of a container line, The present invention relates to a welded structure applied to an upper deck of a container ship.

일반적으로 강 구조물을 건조하기 위해서 용접을 사용하는 것이 필수로서 건조 비용을 저감시키거나 건조 능률을 향상시키려는 목적으로 대입열 용접이 널리 적용되고 있다. 특히, 강판의 판 두께가 증대되면, 용접 공수(工數)가 비약적으로 증가하기 때문에 최대한 대입열로 용접하고자 하는 요구가 많다.In general, it is necessary to use welding to dry steel structures, and large-scale heat welding is widely applied for the purpose of reducing the drying cost or improving the drying efficiency. Particularly, when the plate thickness of the steel sheet is increased, the number of welds increases drastically, so there is a great demand for welding with the maximum heat input.

도 1을 참조하면, 현재 25mm 두께의 강판(1)에 사용되고 있는 용접 이음부(2)에서는 취성 균열이 발생하여도, 용접부의 잔류 응력에 의하여 취성 균열이 용접 이음부(2)로부터 모재 측으로 옮겨가므로 모재 균열정지(어레스트) 성능을 확보하기만 하면 만일 용접 이음부(2)에서 취성 균열이 발생하여도 모재에서 취성 균열을 정지할 수 있다고 생각되어 왔다.1, in the weld joint 2 used in the steel sheet 1 having a thickness of 25 mm, brittle cracks are transferred from the weld joint 2 to the base metal by the residual stress of the weld even if brittle cracks occur Therefore, it has been considered that brittle cracking can be stopped in the base material even if brittle cracks occur in the welded joint (2) by ensuring the performance of the base material crack stop (arrest).

그러나 강 구조물이 대형화됨에 따라 종전 보다 판 두께가 더 두꺼운 강판의 사용이 요구되고. 또한 구조의 간소화를 위하여도 강판의 후육화가 유효하므로 설계 응력이 높은 고장력강의 후강판이 사용되고 있다.However, as steel structures become larger, the use of thicker steel sheets is required. In order to simplify the structure, since the thickening of the steel sheet is effective, a post-steel sheet of high tensile steel having a high design stress is used.

이러한 강판의 취성 파괴와 관련된 시험에 따르면, 판 두께 50 mm 이하의 강판(1)에서, 상기 강판(1)의 맞대기 용접 이음부(2)와 교차하도록 필렛 용접에 의하여 골재 보강판을 설치하면 강판(1)에 취성 균열이 발생하여도 골재보강판에 의하여 취성 균열의 전파가 정지되어(어레스트), 강판(1)이 파단되지 않는 경우가 많았다.According to the test related to the brittle fracture of such a steel sheet, in the steel sheet 1 having a thickness of 50 mm or less, when aggregate reinforcing plates are provided by fillet welding so as to cross the butt weld joints 2 of the steel sheet 1, Even if brittle cracks are generated in the steel plate 1, the propagation of the brittle cracks is stopped by the aggregate reinforcing plate (an arrest), and the steel plate 1 is often not broken.

그러나 판 두께가 두꺼워지면, 예를 들어 컨테이너선 상갑판 철판의 두께가 50 mm를 초과하여 70 mm 정도까지 두꺼워지면, 골재가 장착되어 있어도, 이와 관계없이 취성 균열이 모재로 옮겨가지 않고, 이에 따라 용접 이음부(2)를 따라서 전파되는 경우가 있었다.However, if the plate thickness becomes thick, for example, if the thickness of the upper plate of the container line plate is increased from 50 mm to 70 mm, the brittle cracks do not move to the base material regardless of whether the aggregate is mounted, And propagated along the joint portion 2 in some cases.

즉, 이러한 두꺼운 강판(1)에서는 용접 이음부(2)의 파괴 인성의 정도에 따라서는 취성 균열이 모재로 옮겨가지 않고 용접 이음부의 열영향 영역을 따라서 전파되는 것이 각종 실험에 의하여 밝혀졌다.In other words, it has been revealed by various experiments that brittle cracks do not migrate to the base material but propagate along the heat affected zone of the welded joint depending on the degree of fracture toughness of the welded joint 2 in such a thick steel plate 1.

최근 특히 컨테이너선 상갑판 선행탑재 및 탑재 용접부 균열 진전 방지에 대한 국제해사기구 및 주요 선급들의 규제가 강화되고 있으며 최근 NK선급의 경우 컨테이너선 상갑판 강재의 균열 정지 특성 값을 상향하는 추세에 있다.Recently, the regulation of international maritime organizations and major classification societies has been strengthened in order to prevent the advance of upper deck of container ships and the prevention of crack propagation of mounted welded joints. Recently, NK class ships have been upgrading the crack stopping characteristics of the upper deck plate of container ships.

예를 들어 기존 컨테이너선 상갑판 철판의 균열 정지 특성 값은 80t 이상 일 때 최소 6,000 N/mm3/2으로 상향되었다.For example, the value of the crack stopping property of the existing upper deck plate was raised to at least 6,000 N / mm 3/2 over 80t .

현재 컨테이너선 상갑판(Upper deck) 용접부 취성파괴 균열 정지 특성에서는 그 형상이나 형상에 따른 예측 경로가 매우 중요하다. 그러나, 취성파괴 균열 정지 특성에 대하여 테스트 장비 문제, 시편 크기 문제, 엄청난 비용, 시수 소요 등에 의하여 실험에 대한 자료가 현저히 부족한 상태에다.Upper deck welded part of container line Currently, predictive path of brittle fracture cracking stopping characteristics is very important. However, there is a considerable lack of data on the brittle fracture stopping properties due to test equipment problems, specimen size problems, enormous expense, and time requirements.

또한 강재는 균열 정지 특성을 가지고 있지만, 실질적인 용접부 용접금속에는 균열 정지 특성을 가지고 있지 않으므로, 이에 대한 연구가 시급하다.Also, the steel has crack stopping properties, but it is urgent to study it because it does not have the crack stopping property in the actual weld metal.

한국등록특허 제10-1382670호Korean Patent No. 10-1382670

따라서 이러한 문제점을 해결하기 위한 본 발명의 목적은 취성 균열이 전파될 가능성이 있는 컨테이너선의 상갑판 사이의 해당 영역에 상갑판과 동일한 재질의 타원형상에 삽입부재가 구비되어 용접이음부에서 발생하여 선체 외판 또는 해치코밍으로의 전파되는 취성 파괴 균열을 차단할 수 있는 컨테이너선 상갑판에 적용되는 용접 구조체를 제공하는 것이다.Accordingly, it is an object of the present invention to solve such a problem, and an object of the present invention is to provide a hull structure which is provided with an insertion member in an elliptical shape of the same material as the upper deck plate in a corresponding area between upper decks of a container line, And to provide a welded structure to be applied to a container ship upper deck capable of blocking brittle fracture crack propagated to a hatch coam.

상기 목적을 달성하기 위하여 본 발명은 컨테이너선의 상갑판의 용접이음부에서 취성 파괴 균열이 발생하여 선체 외판 또는 해치코밍으로의 전파를 차단하는 용접 구조체로, 해치코밍과, 상기 해치코밍에 연장되고, 제1상갑판과 제2상갑판으로 구획되는 상갑판과, 상기 제1상갑판과 제2상갑판를 결합하는 용접이음부와, 상기 용접이음부의 일측에 위치되어 취성 균열의 전파를 차단하는 기능을 갖는 타원형상의 삽입부재를 포함하는 컨테이너선 상갑판에 적용되는 용접 구조체를 제공한다.In order to attain the above object, the present invention provides a welded structure for preventing brittle fracture cracks in welded joints of an upper deck plate of a container ship to block propagation to the outer shell of a ship or a hatch coam, the hatch coamings being extended to the hatch coam, An upper deck comprising a first upper deck and a second upper deck, an elliptical insert member having a function of interposing the first upper deck plate and the second upper deck plate at one side of the weld deck to block the propagation of a brittle crack, The present invention provides a welded structure applied to a container ship upper deck including the above-mentioned welded structure.

또한 상기 삽입부재는, 그 재질이 상기 상갑판과 동일한 재질로 형성될 수 있다.The insertion member may be made of the same material as the upper deck.

그리고 상기 삽입부재는, 용접이음부에서의 균열의 전파 방향과, 상기 삽입부재의 사분점을 이은 직선과 이루는 사이각이 100도 이상 130도 이하가 되도록 타원형으로 형성될 수 있다.The insertion member may be formed in an elliptic shape such that an angle formed by a propagation direction of a crack at a welded joint and a straight line connecting a quadrant of the insert member is 100 degrees or more and 130 degrees or less.

상기에서 설명한 본 발명의 컨테이너선 상갑판에 적용되는 용접 구조체에 의하면, 컨테이너선의 상갑판의 용접이음부에 타원형의 삽입부재가 구비되어 용접이음부에서 발생하여 선체 외판 또는 해치코밍으로의 전파되는 취성 파괴 균열 차단하는 효과가 있다.According to the welding structure applied to the upper deck of the container ship of the present invention as described above, the upper deck plate of the container line is provided with an elliptical insertion member at the welded portion, and the brittle fracture crack propagated to the hull shell or the hull coamings, There is an effect to block.

또한 상기 삽입부재는 소정의 초입각을 갖는 타원형으로 형성하되, 그 재질은 상갑판과 동일한 재질로 형성하여 높은 인성을 갖는 효과가 있다.Further, the insertion member is formed into an elliptical shape having a predetermined superimposed angle, and the material thereof is formed of the same material as the upper deck, so that the insert member has high toughness.

도 1은 용접된 강판의 용접 이음부에 취성 균열이 발생된 모습을 나타낸 사진이다.
도 2 및 도 3은 본 발명의 용접 구조체가 적용되는 상갑판과 해치코밍 및 용접 이음부를 도시한 개략도와 단면도이다.
도 4는 도 2에 도시된 상갑판과, 이를 결합하는 용접이음부 및 삽입부재를 도시한 개략도이다.1 is a photograph showing a brittle crack in a welded joint of a welded steel sheet.
Figures 2 and 3 are schematic and cross-sectional views showing the upper deck and the hatch coaming and weld joints to which the welded structure of the present invention is applied.
Fig. 4 is a schematic view showing the upper deck shown in Fig. 2 and a welded joint and an insertion member for coupling the same.

본 발명을 충분히 이해하기 위해서 본 발명의 바람직한 실시예를 첨부 도면을 참조하여 설명한다. 본 발명의 실시예는 여러 가지 형태로 변형될 수 있으며, 본 발명의 범위가 아래에서 상세히 설명하는 실시예로 한정되는 것으로 해석되어서는 안 된다. 본 실시예는 당업계에서 평균적인 지식을 가진 자에게 본 발명을 보다 완전하게 설명하기 위하여 제공 되는 것이다. 따라서 도면에서의 요소의 형상 등은 보다 명확한 설명을 강조하기 위해서 과장되어 표현될 수 있다. 각 도면에서 동일한 부재는 동일한 참조부호로 도시한 경우가 있음을 유의하여야 한다. 또한, 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 공지 기능 및 구성에 대한 상세한 기술은 생략된다.For a better understanding of the present invention, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. The present embodiments are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Further, detailed descriptions of well-known functions and configurations that may be unnecessarily obscured by the gist of the present invention are omitted.

우선 본 발명에 의한 컨테이너선 상갑판에 적용되는 용접 구조체는 컨테이너선 상갑판(Upper deck)의 용접부에서 취성 파괴 균열이 발생하여 선체 외판(Side shell) 과 해치코밍(hatch coaming)부로 진전하는 경우에 적용되는 기술로써, 종래 기술인 컨테이너선 해치코밍(hatch coaming)부와, 용접부 및 모재(철판)에서 균열이 생성되어 용접부를 따라 진전하는 경우와 차이를 두고 있다.First, the welding structure applied to the upper deck of the container according to the present invention is applied to the case where the brittle fracture crack occurs in the welded portion of the upper deck of the container ship and the steel is advanced to the side shell and the hatch coaming portion Technology differs from the conventional case of a container hatch coaming part and a case where cracks are generated in the welded part and the base material (steel plate) to develop along the welded part.

참고로 종래에 소개되고 있는 기술은 컨테이너선 해치코밍의 사이드 플레이트(side plate)에 시공되는 기술로써 본 발명에서 개시되는 기술과 명확하게 구분될 수 있다.For reference, the technique that has been conventionally introduced can be clearly distinguished from the technique disclosed in the present invention as a technique of being applied to a side plate of a container line hatch coaming.

이하 본 발명에 의한 컨테이너선 상갑판에 적용되는 용접 구조체를 도 2 내지 도 4를 참조하여 설명하기로 한다.The welding structure applied to the upper deck of the container ship according to the present invention will be described with reference to Figs. 2 to 4. Fig.

도 2 및 도 3은 본 발명의 용접 구조체가 적용되는 상갑판과 해치코밍 및 용접 이음부를 도시한 개략도와 단면도이다.Figures 2 and 3 are schematic and cross-sectional views showing the upper deck and the hatch coaming and weld joints to which the welded structure of the present invention is applied.

이 경우 도 2 및 도 3에서 도면부호 (100)은 해치코밍을, (200)은 컨테이너선 상갑판(이하 '상갑판')을, (300)은 삽입부재를, (400)은 용접이음부를 나타낸다.2 and 3, reference numeral 100 denotes a hatch coaming, reference numeral 200 denotes a container upper deck (hereinafter referred to as an upper deck), reference numeral 300 denotes an insertion member, and reference numeral 400 denotes a welded joint .

우선 컨테이너선 상갑판에 적용되는 용접 구조체로서, 도 2에 도시된 취성 균열이 전파될 가능성이 있는 용접이음부(400)가 도면 방향으로 하측에서 상측으로 전파되는 것을 용접이음부(400)에 의하여 정지시킬 수 있는 구조로, 해치코밍(100)으로 전파를 미연에 방지할 수 있는 기능을 갖는다.First, as a welded structure to be applied to the upper deck of a container line, a welded joint 400 having a possibility of propagating the brittle crack shown in Fig. 2 is propagated from the lower side to the upper side in the drawing direction, The hatch coamer 100 has a function of preventing radio waves from being emitted.

상기 용접이음부(400)는 제1상갑판(210)과 제2상갑판(220) 사이의 해당 영역의 맞대기 용접이음부(400)의 일측에 일정형상의 삽입부재(300)을 위치하여 보수 용접을 수행하여 용접 구조체를 형성한다.The welded joint 400 is formed by placing the insert member 300 having a predetermined shape on one side of the butt weld 400 of the corresponding region between the first upper deck 210 and the second upper deck 220, To form a welded structure.

상기 삽입부재(300)의 여러 조건에 대한 실험에 의하여 결과값을 검토한 결과, 취성 균열이 전파될 가능성이 있는 제1상갑판(210)과 제2상갑판(220) 사이의 해당 영역의 맞대기 용접이음부(400)의 취성 균열을 정지시키는 영역에 있어서, 용접이음부(400)를 따라 전파되는 취성 균열이 삽입부재(300)로 옮겨지게 하여 균열의 전파를 정지시키거나, 또는 측면으로 분산하는 경우에 가장 좋은 결과를 얻을 수 있었다.As a result of examination of various conditions of the insertion member 300, it was found that the butt welding of the corresponding region between the first upper deck 210 and the second upper deck 220, in which brittle cracks may propagate, In the region where brittle cracks of the negative portion 400 are stopped, the brittle crack propagated along the weld joint 400 is transferred to the insertion member 300 to stop the propagation of cracks or disperse the brittle cracks to the side The best results were obtained.

따라서 상기 삽입부재(300)는 소정의 초입각을 갖는 타원형으로 형성하여 균열의 전파를 차단하는 것이 바람직하고, 그 재질은 상갑판(200)과 동일한 재질로 형성하여 높은 인성을 갖는 용접 구조체를 이루는 것이 바람직하다.Therefore, it is preferable that the insertion member 300 is formed in an elliptical shape having a predetermined angle of inclination to block the propagation of cracks. The material of the insertion member 300 is made of the same material as the upper deck 200, desirable.

도 4는 도 2에 도시된 상갑판과, 이를 결합하는 용접이음부 및 삽입부재를 도시한 개략도이다.Fig. 4 is a schematic view showing the upper deck shown in Fig. 2 and a welded joint and an insertion member for coupling the same.

도 4에 도시된 바와 같이, 상기 용접이음부(400)에서 발생되는 취성 균열은 잔류 인장 응력이 발생하기 쉬운 상갑판(200) 일측의 용접이음부(400)에 열 영향부에서 발생하여 삽입부재(300)을 향하여 전파된다. 이 경우 쉬운 이해를 위해 도 4에는 전파경로가 화살표방향으로 도시되어 있다.As shown in FIG. 4, the brittle crack generated in the weld joint 400 is generated in the welded joint portion 400 of the upper deck 200 where the residual tensile stress is likely to occur, in the heat affected portion, 300). In this case, the propagation path is shown in the arrow direction in Fig. 4 for easy understanding.

이 경우 균열의 전파는 타원형의 삽입부재(300)에 외주면을 향하여 유도되고, 외주면을 따라 그 크기가 점차 감소하여 정지되는 것을 알 수 있었다.In this case, the propagation of the crack is induced toward the outer circumferential surface of the elliptical insertion member 300, and the size of the crack gradually decreases along the outer circumferential surface.

또한 상기 삽입부재(300)는 균열의 전파 방향과, 상기 삽입부재(300)의 사분점을 이은 직선과 이루는 사이각(310)이 100도 이상 130도 이하가 되도록 타원형으로 형성함으로써, 용접이음부(400)에서 전파되는 취성 균열을 상갑판(200)으로 유도하여 균열의 전파를 정지시킬 수 있게 되었다. 참고로, 상기 사이각(310)이 135도 인 경우 삽입부재(300)은 원형으로 형성되고, 135도를 초과하면 도면상 세로방향으로 긴 타원형이 된다.The insertion member 300 is formed in an elliptical shape so that the angle 310 between the propagation direction of the crack and the straight line connecting the quadrants of the insertion member 300 is 100 degrees or more and 130 degrees or less, The brittle crack propagated in the upper plate 400 can be guided to the upper deck 200 and the propagation of the crack can be stopped. For example, when the angle 310 is 135 degrees, the insertion member 300 is formed in a circular shape, and when it exceeds 135 degrees, the insertion member 300 is formed into a long oval shape in the vertical direction in the drawing.

이 경우 상기 사이각(310)이 100도 미만의 경우에는 삽입부재(300)에 타원의 형상이 너무 납작하게 되어, 균열이 상갑판(200)으로 유도되지 않고, 삽입부재(300)에 균열이 정지되지 않고, 계속적인 침입이 이루어진다.In this case, when the interval 310 is less than 100 degrees, the shape of the ellipse is too flat on the insertion member 300, the crack is not guided to the upper deck 200, And continuous invasion is achieved.

또한 상기 사이각(310)이 130도를 초과하는 경우에는 균열이 상기 상갑판(200)으로 유도되나, 완전한 흡수가 이루어지지 않아, 계속적인 침입이 발생하여 전파된다.When the angle 310 is more than 130 degrees, a crack is induced in the upper deck 200, but complete absorption is not achieved, and continuous invasion occurs and propagates.

따라서, 본 발명의 기술 사상의 주안점은 상술한 바와 같이, 컨테이너선 상갑판(200)에 적용되는 용접 구조체로써, 컨테이너선 상갑판(Upper deck)의 용접부에서 취성 파괴 균열이 발생하여 선체 외판(Side shell) 과 해치코밍(hatch coaming)부로 진전하는 경우를 미연에 차단할 수 있는 기능을 갖는 것이다. 즉 균열을 상갑판(200)으로 경로를 유도하고, 균열의 힘을 분산하여 정지시킬 수 있게 되는 것이다.Therefore, the main point of the technical idea of the present invention is the welded structure applied to the upper deck 200 of the container line, as described above, and brittle fracture cracks are generated in the welded portion of the upper deck of the container ship, And a function of blocking the case of advancing to a hatch coaming part in advance. That is, the crack can be guided to the upper deck 200, and the force of the crack can be dispersed and stopped.

이상에서 설명된 본 발명의 컨테이너선 상갑판에 적용되는 용접 구조체의 실시예는 예시적인 것에 불과하며, 본 발명이 속한 기술분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 잘 알 수 있을 것이다. 그러므로 본 발명은 상기의 상세한 설명에서 언급되는 형태로만 한정되는 것은 아님을 잘 이해할 수 있을 것이다. 따라서 본 발명의 진정한 기술적 보호 범위는 첨부된 특허청구범위의 기술적 사상에 의해 정해져야 할 것이다. 또한, 본 발명은 첨부된 청구범위에 의해 정의되는 본 발명의 정신과 그 범위 내에 있는 모든 변형물과 균등물 및 대체물을 포함하는 것으로 이해되어야 한다.The embodiments of the welded structure to be applied to the container upper deck of the present invention described above are merely illustrative and those skilled in the art can make various modifications and other equivalent embodiments You can see that it is. Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

100 : 해치코밍 200 : 상갑판
210 : 제1상갑판 220 : 제2상갑판
300 : 삽입부재 310 : 사이각
400 : 용접이음부100: Hatch coaming 200: Upper deck
210: first upper deck 220: second upper deck
300: insertion member 310: inter-angle
400: welded joint

Claims (3)

컨테이너선의 상갑판(200)의 용접이음부(400)에서 취성 파괴 균열이 발생하여 선체 외판(Side shell) 또는 해치코밍(100)으로의 전파를 차단하는 용접 구조체로,
해치코밍(100);
상기 해치코밍(100)에 연장되고, 제1상갑판(210)과 제2상갑판(220)으로 구획되는 상갑판(200);
상기 제1상갑판(210)과 제2상갑판(220)를 결합하는 용접이음부(400);
상기 용접이음부(400)의 일측에 위치되어 취성 균열의 전파를 차단하는 기능을 갖는 타원형상의 삽입부재(300)
를 포함하는 컨테이너선 상갑판에 적용되는 용접 구조체.A welded structure for preventing brittle fracture cracks in the welded joint portion 400 of the upper deck 200 of the container line to block propagation to the side shell or the hatch coaming 100,
A hatch coaming 100;
An upper deck 200 extending to the hatch coam 100 and being divided into a first upper deck 210 and a second upper deck 220;
A welding portion 400 for coupling the first upper deck 210 and the second upper deck 220;
An elliptical insertion member 300 having a function of blocking the propagation of a brittle crack by being positioned at one side of the weld joint 400,
A welded structure applied to a container ship upper deck comprising: 제1항에 있어서,
상기 삽입부재(300)는,
그 재질이 상기 상갑판(200)과 동일한 재질로 형성되는 컨테이너선 상갑판에 적용되는 용접 구조체.The method according to claim 1,
The insertion member (300)
Wherein the upper deck (200) is made of the same material as the upper deck (200). 제1항에 있어서,
상기 삽입부재(300)는,
용접이음부(400)에서의 균열의 전파 방향과, 상기 삽입부재(300)의 사분점을 이은 직선과 이루는 사이각(310)이 100도 이상 130도 이하가 되도록 타원형으로 형성되는 컨테이너선 상갑판에 적용되는 용접 구조체.
The method according to claim 1,
The insertion member (300)
(310) between the propagation direction of cracks in the weld joint (400) and the straight line connecting the quadrants of the insertion member (300) is not less than 100 degrees and not more than 130 degrees, Applicable welded structure.
KR1020160142211A 2016-10-28 2016-10-28 Welded structure apllied to upper deck support of container ship KR20180046706A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110937080A (en) * 2019-10-31 2020-03-31 上海江南长兴造船有限责任公司 Construction method for assembling transverse bulkhead top plate of container ship
CN112758276A (en) * 2020-12-30 2021-05-07 大连船舶重工集团有限公司 Method for integrally building ultra-large container ship cabin opening circumference and torsion box
CN113501105A (en) * 2021-06-28 2021-10-15 沪东中华造船(集团)有限公司 Method for installing multipurpose heavy lift vessel supporting block box on subsection
CN115158596A (en) * 2022-08-19 2022-10-11 上海外高桥造船有限公司 Assembling and welding process for horn mouth surrounding plate pushed from head to side

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110937080A (en) * 2019-10-31 2020-03-31 上海江南长兴造船有限责任公司 Construction method for assembling transverse bulkhead top plate of container ship
CN110937080B (en) * 2019-10-31 2023-12-26 上海江南长兴造船有限责任公司 Construction method for assembling transverse compartment top plate of container ship
CN112758276A (en) * 2020-12-30 2021-05-07 大连船舶重工集团有限公司 Method for integrally building ultra-large container ship cabin opening circumference and torsion box
CN112758276B (en) * 2020-12-30 2023-03-14 大连船舶重工集团有限公司 Method for integrally building hatch circumference and torsion box of ultra-large container ship
CN113501105A (en) * 2021-06-28 2021-10-15 沪东中华造船(集团)有限公司 Method for installing multipurpose heavy lift vessel supporting block box on subsection
CN115158596A (en) * 2022-08-19 2022-10-11 上海外高桥造船有限公司 Assembling and welding process for horn mouth surrounding plate pushed from head to side
CN115158596B (en) * 2022-08-19 2024-03-26 上海外高桥造船有限公司 Assembling and welding process for horn mouth coaming pushed at head side

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