한국지반공학회:학술대회논문집 (Proceedings of the Korean Geotechical Society Conference)
- 한국지반공학회 2010년도 추계 학술발표회
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- Pages.49-59
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- 2010
새만금지역에서 GIS를 이용한 광역액상화 판정
Liquefaction Judgement on Saemangeum with GIS
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Song, Byung-Woong
(Dept. of Geotechnical Engineering, DASAN Consultant) ;
- Kim, Gun-Ho (Dept. of Geotechnical Engineering, DASAN Consultant) ;
- Yoo, Jin-Ho (Civil Business Department, Halla Construction) ;
- Kim, Hong-Taek (Dept. of Civil Engineering, Hongik University)
- 발행 : 2010.09.09
초록
Earthquake-induced liquefaction on saturated loose sand is well known in the world. Since Saemangeum Dike Project has a plan to be reclaimed with dredged sand on wide river, possibility of liquefaction should be checked. Section Dongjin5 was selected to evaluate possibility of liquefaction. Estimating method follows as 1) determination of PL value with SPT results, passing curve, and soil properties, 2) prediction for maximum earthquake acceleration, 3) calculation for FL value on depth with Korean specification for highway bridges, 4) visualization for possibility of liquefaction on all of project area with GIS 5) comparison with Japanese specification for highway bridges, Youd and Idriss method, and Andrus and Stokoe II method for verification, 6) ascertainment for the potential liquefaction with cyclic triaxial test. 7) establishing for countermeasure if needed. From the results, even though most of area covered with sand, no potential liquefaction exists except some areas. Those need to soil improvement with grout or attaching measurement on substructure.