• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2009.05a
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• pp.79-82
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• 2009

• 주택과사람들
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• s.199
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• pp.100-103
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• 2006

겨울을 겨울답게 보내고자 한다면 세계 유명 스키장이 있는 곳으로 떠나자. 국내 스키장에서는 느낄 수 없는 설질과 끝없는 슬로프, 그리고 여유로움을 만날 수 있다. 스키를 즐길 후에 맛보는 온천에서는 노곤함도 아찔한 유혹이다.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2013.04a
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• pp.626-627
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• 2013

• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2009.11a
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• pp.155-156
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• 2009

• Bulletin of the Society of Naval Architects of Korea
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• v.53 no.4
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• pp.17-22
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• 2016

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2013.10a
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• pp.825-826
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• 2013

• Journal of the Korea institute for structural maintenance and inspection
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• v.13 no.3 s.55
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• pp.135-144
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• 2009

The cable system of suspension bridges is a very important non-elastic element which caries an external load by a tension force of the cable, such that creates the integrity of a structure. It is not easy to find if cable system have been changed by the maintenance activities such as repairs or reinforcement. Sometimes the maintenance can cause structural deformations and changes of the tension force in cables. In most cases, the cable stayed bridges are managed by health monitering system, however, the main cable of suspension bridges need to develop more accurate and efficient monitoring system. The Namhee Bridge was constructed 35 years ago and it has been continually repaired and reinforced after then. This study describes the behavior of the cable system by analysing many of inspective reports and by using the results of hanger rope test and for the shape of main cables surveys.

• Journal of Korean Society of Steel Construction
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• v.17 no.3 s.76
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• pp.307-316
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• 2005

This study analyzed the characteristics of four kinds of bridge rubber pads and suggested a method of determining the stiffness and the damping ratio of the pads.The stiffness of rubber pads can be estimated by a direct static test and a dynamic test indirectly.This study used both methods to determine the pad's stiffness.The damping ratio of pads can be obtained using the dynamic test and the damping ratio of polyurethane rubber pads was estimated to aproximate that of natural and chloroprene rubber pads.The polyurethane rubber pads are harder than natural and chloroprene rubber pads and thus carry larger load bearing capacity.In addition, they showed higher stiffness with the same shape factor than the others and thus are more available for bridge bearings.Although natural and chloroprene rubber pads are elongated to large deformation in the horizontal direction due to vertical loads, polyurethane rubber pads almost do not generate horizontal deformation due to vertical loads regardless of the thickness and hardness of the pads.Therefore, they do not need reinforced plate to restrict horizontal deformation.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.9
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• pp.569-574
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• 2020

A floating dock is the main facility for launching ships. In the early 2000s, ship-launching technology using floating docks was developed in Korea. Therefore, the opportunity to participate in new construction projects without investment in dry docks has expanded. In this paper, a basic calculation for the safe mooring of a floating dock was performed, and a mooring system was designed based on this. This study was conducted considering the typhoon situation, which is the most serious environmental requirements of Daebul Pier, a site to be installed and operated, for a floating dock. The design load was calculated by wind load, tidal load, and wave-induced load in accordance with the internationally accepted standards. After performing the initial arrangement of the mooring line of the floating dock using the existing mooring facilities of Daebul Pier, the minimum breaking load for each mooring line was calculated for the given load. Based on the calculation, the mooring arrangement was modified to minimize the breaking load, and a final specification of each mooring line was selected.

• Journal of the Korea institute for structural maintenance and inspection
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• v.22 no.1
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• pp.56-63
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• 2018

The present study examined the reversal cyclic flexural behavior of walls with jacket section approach for seismic strengthening through forming the boundary elements at both ends of the wall. The prestressed wire ropes were used for the lateral reinforcement to confine the boundary element of the wall. The main parameter investigated was the height of the jacket section for strengthening. The limit height of the strengthening jacket section was determined by comparing the moment distributions between the existing and strengthened walls. Test results showed that the examined jacket section approach was significantly effective in enhancing the flexural resistance of walls, indicating 46% higher stiffness at peak strength and 210% greater work damage indicator, compared with the flexural performance of the unstrengthened wall. The ductility of the strengthened walls was insignificantly affected by the height of the jacket section when the height is greater than twice the wall length. The flexural capacity of the strengthened walls was 22% higher than the predictions obtained using the equivalent stress block specified in ACI 318-14.