This study proposes a methodology for assessing seismic liquefaction hazard by implementing high-resolution three-dimensional (3D) ground models with high-density/high-precision site investigation data acquired in an area of interest, which would be linked to geotechnical numerical analysis tools. It is possible to estimate the vulnerability of earthquake-induced geotechnical phenomena (ground motion amplification, liquefaction, landslide, etc.) and their triggering complex disasters across an area for urban development with several stages of high-density datasets. In this study, the spatial-ground models for city development were built with a 3D high-precision grid of 5 m x 5 m x 1 m by applying geostatistic methods. Finally, after comparing each prediction error, the geotechnical model from the Gaussian sequential simulation is selected to assess earthquake-induced geotechnical hazards. In particular, with seven independent input earthquake motions, liquefaction analysis with finite element analyses and hazard mappings with LPI and LSN are performed reliably based on the spatial geotechnical models in the study area. Furthermore, various phenomena and parameters, including settlement in the city planning area, are assessed in terms of geotechnical vulnerability also based on the high-resolution spatial-ground modeling. This case study on the high-precision 3D ground model-based zonations in the area of interest verifies the usefulness in assessing spatially earthquake-induced hazards and geotechnical vulnerability and their decision-making support.

본 논문에서는 초고압 특수 공간지를 활용한 다기능 포터블 카약을 제작하였다. 초고압 특수 공간지를 활용한 설계로 기존의 인플레터블 카약의 성능을 개선하여 하드쉘 카약의 성능에 근접하도록 제작하였다. 하드쉘 카약의 성능과 인플레터블 카약의 기능성 및 휴대성의 장점을 모두 가진 카약을 제작하였으며, 시제품 성능평가를 통해 기존 하드쉘 카약과의 성능을 비교하였다. 저항성능 검증결과는 목표속도 6knot에 대해 Hobie KONA kayak에 비해 Developed kayak이 12.33% 저항성능이 우수하였다. 경사시험결과는 동일배수량일 경우 Hobie KONA kayak 보다 Developed kayak의 무게중심이 선저를 기준으로 22.7% 낮게 분포하고 있으며, 이는 Hobie KONA kayak 보다 Developed kayak의 무게중심이 낮음으로 복원팔(GZ)에 대한 차이가 일정부분 감소된다. 선체 복원력에서는 Hobie KONA kayak이 약간 우수한 성능을 보여주었으나, 선회력과 저항계수면에서 Developed kayak이 더 우수한 결과를 보였다.