해저지반 상부에 설치된 침매터멀에 작용하는 동수압에 관한 수치실험
Numerical Experiments of Dynamic Wave Pressure Acting on the Immersed Tunnel on Seabed Foundation
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초록
지금까지침매터널에대한대부분의연구들은건설기술자의경험에바탕을둔연구들이었다. 공학적인 관점에서파랑하중에의한침매터널의안정성은지반기초의거동에큰영향을받으므로파ㆍ지반ㆍ침매터널의상호작용에대한이해는매우중요하다. 본연구에서는파ㆍ지반ㆍ침매터널의상호작용의메커니즘에대한이해를위하여부산-거제간연결도로민간투자사업구간중침매터널구간에직접수치해석기법을적용하여침매터널주변의지반및피복층내에서파랑하중에의한간극수압, 와도및흐름의특성을종합적으로살펴보았다. 또한다양한파랑조건및피복층의평균입경변화에따른비선형성의파랑과침매터널및지반의상호작용이침매터널의 안정성과관련하여논의되었다.
Abstract
Most imersed tunnels investigated have ben investigated based on the enginer’s experience withdesign and construction. From engineering point of view, it is very important to understand the wave interactionwith the seabed and imersed tunnel, since the stability of an imersed tunnel depends largely on the behaviorinteraction with the seabed and imersed tunnel, the benchmarking method called as direct numerical simulation(DNS) was employed to analyze comprehensively the wave-induced pore water presures, vorticity and flows inseabed or inside rubble stone around the imersed tunnel. The imersed tunnel is modeled based on Busan-Geoje fixed link project in Korea, which is now on the stage of planning. Moreover, the nonlinear water waveinteraction with an imersed tunneof the immersed tunnel subjected to various water wave conditions, median grain size and so forth.
참고문헌 (14)
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