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굴착사면의 안정해석과 보강설계법
Stability Analysis and Reinforced Design Method of Excavation Slopes

강예묵    (충남대학교 농과대학   ); 이달원    (한국토지공사 토지연구원   ); 조재홍    (충남대학교 대학원  );
  • 초록

    In this study, displacement, deformation, and stability according to change of cohesion and internal friction angle were investigated through elasto-plastic method, finite-element method, and in-site experiment when excavating soft ground using sheet pile. The results of the study were as follows : 1. The horizontal displacement was 5.5% of the excavation depth by the elasto-plastic method and 3.9% of the excavation depth by the on-site experiment at the final excavation depth(GL-8.Om) on the condition of double stair strut after excavating GL-6.Om. 2. Relationships between cohesion(c) and internal friction angle $({\varphi})$ when safety factor to the penetration depth was 1.2 is shown in the following equations : (a) c= -O.0086 $({\varphi})$ + O.3(D=3m) and (b) c=-0.00933 $({\varphi})$ +0.14(D=4m). 3. The results of elasto-plastic method and the experiment show that possible excavation depth was GL-6.Om after setting single stair strut in a short period in terms of possibility of carrying out on the condition of experimental site on the contrary general reinforcement method, setting double stair strut after excavating GL-4.0m. 4. After setting the strut, distribution of the horizontal displacement had concentrated on the excavation base and possible local failure which the shear strain caused decreased by the strut reinforced. 5. After setting strut, displacement of sheet pile was decreased by half, the limit of stable excavation depth of ground was GL-8.Om, and the maximum horizontal displacement at the GL-8.Om was 1.6% of excavation depth by the elasto-plastic method, 0.7% of excavation depth by the finite-element method.


  • 주제어

    탄소성법 .   유한요소법 .   변위 .   근입깊이 .   널말뚝.  

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  • 이 논문을 인용한 문헌 (1)

    1. 1997. "A Study on the Characteristics of Alluvial Clay in Yangsan-Mulgum" 한국농공학회지 = Journal of the Korean Society of Agricultural Engineers, 39(1): 102~111     

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