• Proceedings of the Korea Concrete Institute Conference
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• 1999.04a
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• pp.821-824
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• 1999

콘크리트 케이슨 제작장(Casting Bed)내에 케이슨의 제작 및 이동경로가 되는 이동통로(Trough)를 형성하고 거푸집과 이동통로를 겸할 수 있도록 고안한 소핏폼(Soffit Form)을 설치함으로써, 제작된 케이슨 하부로 케이슨 부양용 에어로 고(Aero Go)가 양방향으로 자유로이 이동할수 있게 하여 제작에서 운반까지의 각 단계별 공정이 일직선상에서 공장식 연속 조립공정으로 진행되며, 또한 별도의 대차 및 회수시설이 불필요한 공장형 일관 제작 시스템에 의한 다단계 케이슨 제작, 운반 및 진수방법이다.

• 한국방재학회:학술대회논문집
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• 2009.02b
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• pp.88-88
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• 2009

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.11a
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• pp.52-54
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• 2018

울산신항 북방파제(제3공구)축조공사에서는 국내 최초로 선박제조용 F/D(Floating Dock)선을 적용하여 케이슨 제작 및 거치공사를 실시하였으며, 공장형 슬립폼 제작장(IP-CCV)를 적용한 경우 보다 공기단축 및 원가절감의 효과가 있었다. F/D선 공법 순서는 작업부두에 F/D선 접안, 케이슨 제작, F/D선 진수장 이동, F/D선 및 케이슨 진수, 케이슨 예인 및 거치의 순서로 시행되었으며, 현재 턴키공사의 설계특화 내용으로 활용되어 시공안정성 향상 및 공기, 공사비 절감 방안으로 적용되고 있다. 향후 남북관계가 원만히 해결되어 동해안 항만개발이 가속화되면 국외특허공법(IP-CCV)에 의존없이 경쟁력있는 공법이라 판단된다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.39 no.1
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• pp.195-201
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• 2019

Long caisson breakwaters can improve the structural safety of a caisson due to the wave dispersion effect which reduces the average wave force acting on one caisson. However, in order to make long caissons, there are many manufacturing and construction limitations. Recently, interlocking caisson systems, which are to form a long caisson by interlocking individual caissons with adjacent caissons, have been much attention. In the present study, a interlocking caisson system with shear-keys was proposed and the wave dispersion effect according to the shear-key was evaluated analytically. As a result, (1) Because of the asymmetric shape of the interlocking caisson, the structure behavior and the wave dispersion effect of one are also asymmetric. (2) The wave dispersion effect is more influenced by the distribution and characteristics of wave acting on each caisson rather than the shape of the shear-key such as shear angle, height, shear length ratio. (3) The interlocking caisson breakwater is almost the same behavior and wave dispersion effect as a fully integrated breakwater.

• 어항어장
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• s.57
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• pp.48-54
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• 2001

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.29 no.2
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• pp.121-127
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• 2017

The actual wave is multi-direction irregular wave. In the case of a long structure, a reduction effect of the wave occurs. In this study, in order to grasp the extent to which these influences contribute to the failure probability and compare the existing modular breakwaters to the stability, we used existing modular breakwaters and long caisson breakwaters using wave force reduction parameter to analysis the reliability. As a result, the reliability index of the long caisson breakwater was higher than that of the existing modular caisson breakwater, and it was confirmed that the significant wave height of the design variables had the highest influence. In addition, the reliability analysis was performed according to the change of the mean value of the variables used in the calculation of the wave force reduction parameter. It is confirmed that the relationship between each variable value and the wave force reduction parameter appears in the analysis results.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2014.11a
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• pp.42-43
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• 2014

In order to ensure the construction of sustainable reinforced concrete structures, durability evaluation of Caisson structures before construction should be carried out. In this paper, a service life evaluation technique using a safety factor determined by a reliability theory for Caisson structures subjected to chloride attack is proposed.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.29 no.2
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• pp.77-82
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• 2017

Recently, the possibility of abnormal waves of which height is greater than design wave height have been increased due to the climate change, and therefore it has been urgent to secure the stability for harbor structures. As a countermeasure for improving the stability of conventional caisson breakwaters, a method has been proposed in which adjacent caissons are interlocked with each other to consecutively resist the abnormal wave forces. In order to reflect this research trend, the reduction effect of the maximum wave force resulted from introducing a long caisson has been presented in the revision to the design criteria for ports and fishing harbors and commentary. However, no method has been proposed to evaluate the stability of interlocking caisson breakwater. In this study, we consider the effect of the phase difference of the oblique incidence of the wave based on the linear wave theory and apply the Goda pressure formula for considering design wave pressure distribution in the vertical direction. Sliding stability assessment formula of an interlocking caisson breakwater is proposed for regular, irregular, and multi-directional irregular wave conditions.

• Journal of Ocean Engineering and Technology
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• v.24 no.1
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• pp.83-89
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• 2010

This study presents a stability analysis procedure for caisson structures and a case study for a honeycomb slit-caisson. CADMAS-SURF was used to calculate the wave pressures based on an irregular wave with a 50-year period and the data for three regular waves obtained from a target site. Then, the irregular and regular wave pressures were used to obtain the dynamic responses (stresses) of the caisson structure using an explicit time integration program, ANSYS/LS-DYNA. Finally, the DNV code was used for structural and fatigue stability analyses.

• Water for future
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• v.39 no.3 s.152
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• pp.56-70
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• 2006