• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.05a
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• pp.199-202
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• 2018

현재 대규모 항만국가공사 대부분은 대수심, 고파랑 지역에 위치하고 있어 대안설계 진행시는 해당 해역의 특성을 고려한 설계파 산정, 평면 및 단면계획, 구조물의 안정성 검토 등의 사항을 기존설계 대비 상향시켜 설계에 반영하고 있는 사례를 최근 발주된 동해항 3단계 방파호안 축조공사를 사례를 들어 최근 설계방향성을 검토함.

• Journal of the Korean GEO-environmental Society
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• v.24 no.12
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• pp.39-45
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• 2023

In this paper, a track irregularity according to adjacent deep excavation of railway was analyzed using three-dimensional numerical analysis. The construction for excavation adjacent to the railway track is likely to have a negative impact on train operations. Despite mandatory assessments of the stability and impact on adjacent structures during construction, reports continue to indicate ongoing settlement and track irregularity resulting from construction. Changes in the groundwater level and stress state of the ground due to excavation are pointed out as causes for settlement and track irregularity in structures adjacent to the excavation. In this study, therefore, numerical analysis was conducted taking into account factors that induce track irregularity during adjacent excavation work as variables. The KRL-2012 standard train load was applied to simulate operating trains. As a results, The position of the train load, the distance from the excavation point, had a significant impact on track irregularity, and there was a significant occurrence of track misalignment when the train load was applied. The impact of the groundwater level was not significant.

• Journal of the Korea Institute of Building Construction
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• v.1 no.2
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• pp.69-75
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• 2001

• Magazine of the Korea Concrete Institute
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• v.12 no.4
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• pp.49-56
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• 2000

• Magazine of the Korea Concrete Institute
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• v.11 no.5
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• pp.66-72
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• 1999

• 건축구조
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• v.19 no.4
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• pp.23-29
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• 2012

• Magazine of korean Tunnelling and Underground Space Association
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• v.21 no.2
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• pp.25-40
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• 2019

• Geotechnical Engineering
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• v.35 no.4
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• pp.27-33
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• 2019

• Journal of the Korea institute for structural maintenance and inspection
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• v.25 no.1
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• pp.103-111
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• 2021

Naju Seokdanggan, Treasure No. 49, was dismantled and reconstructed due to poor performance. During construction, the crack area was reinforced and the inclination was improved. It is necessary to analyze the stiffness changes before and after the reconstruction of these cultural properties, and to establish a database of related information. In addition, there is a need for research on a scientific non-destructive testing method capable of predicting or evaluating the reinforcing effect. In this study, a simple equation for estimating the overall stiffness of the structural system was derived from information on the elasticity coefficient and the natural frequency measured by vibration tests before and after reconstruction work, and the applicability of the equation was examined. If the stiffness of important cultural properties is regularly investigated by the suggested method, it is judged that it can be used as data to estimate the time when structural safety diagnosis is necessary or when repair or reinforcement is necessary.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 1999.06a
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• pp.157-162
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• 1999

본 연구는 현장의 굴착공사에 따른 토류 구조물 설치공사의 수행에 있어서 토류 벽체의 지지 구조체률 형성하는 Earth Anchor에 대한 시공의 적정성 여부 및 설계목적에의 부합 여부를 판정하여 토류 벽체의 안정성 판단 및 Earth Anchor의 설계 목적에의 부합성 여부를 판단하기 위하여 본 연구를 수행하며 실험의 기준은 SIA. Standard Edition 1977 규정에 따르며, Earth Anchor의 설계, 정착장 및 자유장의 길이를 적절히 산출하고 정착력에 대한 신뢰도, 즉 인발력을 실험하여 정착장의 소요 안전율을 추정하며 더불어 지반에 대한 비교, 판단도 행하는 것이 목적이다. (중략)