• Title/Summary/Keyword: 지반 보강

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Performance Evaluation of Earthquake Resistant Caisson Type Quay Walls (케이슨식 안벽의 내진보강 성능 평가 -수치해석적 측면에서-)

  • 권오순;황성춘;박우선
    • Journal of the Korean Geotechnical Society
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    • v.16 no.4
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    • pp.129-139
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    • 2000
  • The liquefaction of reclaimed land generally caused the harbor facilities to hazards. In Korea, the major harbor quay walls are gravity type and the gravity quay wall is not a good earthquake resistant structure. Recently, various earthquake resistant quay walls have been suggested, but the study on the efficiency of reinforced quay wall was not much performed. In this study, numerical analysis is carried out for performance evaluation of easily adoptable earthquake resistant quay walls. The results of numerical analysis are compared with shaking table test that is performed at the same cross-section.

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Ultimate Bearing Capacity of Strip Foundation on Geogrid -Reinforced Clayey Soil

  • Shin, Eun-Chul;Choi, Chan-Yong
    • Geotechnical Engineering
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    • v.13 no.3
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    • pp.77-86
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    • 1997
  • Laboratory model test results for the ultimate bearing capacity of a surface strip foundation supported by a near-saturated clayey soil reinforced with layers of geogrid have been presented. The optimum values for the width of the reinforcement layers, the depth of reinforcement, and the location of the first layer of geogrid for mobilization of maximum bearing capacity have been determined. Based on the model test results, an empirical procedure to estimate the ultimate bearing capacity has been developed.

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Numerical Modeling of Soil-Reinforcement Interaction Under a Buried Pipeline (매설관 하부지반-보강재 상호작용의 수치모델 연구)

  • 손준익;정하익
    • Computational Structural Engineering
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    • v.4 no.3
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    • pp.129-135
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    • 1991
  • This paper reports the application study of the ground reinforcement under a buried pipeline subjected to differential settlement via a finite element modeling. The soil-reinforcement interaction helps to minimize the differential settlement between the adjoining pipe segments. The settlement pattern and deformation slope of a pipeline have been evaluated for a boundary condition at the joint between a rigid structure and a pipeline. The analysis results are compared for both non-reinforced and reinforced cases to numerically evaluate the stress transfer mechanism and the effectiveness of the soil reinforcement for restraining the settlement of the pipeline.

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Nonlinear Finite Element Analysis of Foundation with Shear Reinforcements on the Ground (전단보강된 기초의 지반에서의 거동해석)

  • Yi, Waon-Ho;Lee, Yong-Jae;HwangBo, Seok;Yang, Won-Jik;Heo, Kab-Soo;Jin, Seong-Chan
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2011.04a
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    • pp.615-618
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    • 2011
  • 최근 건설공사에서 많은 물량이 투입되는 기초구조의 자재비 및 원가절감을 위해 여러 가지 기초구조시스템이 개발되고 있으나, 보편적으로 현장에 적용하기에는 다소 무리가 있는 것으로 지적받고 있다. 본 연구는 강판을 ㄷ자형으로 절곡한 기초전단보강시스템을 개발하기 위한 해석적 연구의 일환으로 진행되었다. 현행 전단머리 보강식에서는 기초판에 대한 전단내력 산정을 위한 기준식이 마련되어 있지 않으며 플랫플레이트 슬래브의 기준식에 따르도록 되어져있다. 그러나 기초판은 지반에 지지되는 구조물로 플랫플레이트 슬래브와는 경계조건이 다르다. 따라서 본 연구에서는 지반에 지지된 경우와 플랫플레이트 슬래브와 같이 모멘트 제로지점을 단순지지한 형태로 기초구조물을 모델링하여 해석을 실시하였다. 해석프로그램은 유한 요소기법이 적용된 ABAQUS를 사용하여 두 지지조건의 차이가 구조물에 미치는 영향을 비교분석하였다.

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