비틂전단시험에 의한 서해안 새만금 모래의 동적특성 연구
Study of Dynamic Characteristics of West Coast Saemangeum Sand by Torsional Shear Test
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초록
The dynamic characteristics of west coast sand were investigated in order to evaluate the design properties of the offshore wind turbine foundations to be constructed in the West Sea. Torsional shear tests were performed at different confining pressures and densities on specimens constituted by the dry fluviation method. The strain-dependent shear modulus and damping curves were obtained, together with modulus degradation curves. The results show that the confining pressure is more influential on the dynamic characteristics of the sand than the density. It was also found that the dynamic curves from this study were similar to those proposed by others. The modulus degradation ratioG/G1stvaries slightly at a small strain level, but increases significantly once beyond the intermediate strain level.
Abstract
The dynamic characteristics of west coast sand were investigated in order to evaluate the design properties of the offshore wind turbine foundations to be constructed in the West Sea. Torsional shear tests were performed at different confining pressures and densities on specimens constituted by the dry fluviation method. The strain-dependent shear modulus and damping curves were obtained, together with modulus degradation curves. The results show that the confining pressure is more influential on the dynamic characteristics of the sand than the density. It was also found that the dynamic curves from this study were similar to those proposed by others. The modulus degradation ratioG/G1stvaries slightly at a small strain level, but increases significantly once beyond the intermediate strain level.
참고문헌 (21)
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