The The purpose of this study is to investigate the actual liquefaction occurrence site in Pohang area and to analyze the ground characteristics of Pohang area using the data of the National Geotechnical Information DB Center and to calculate the liquefaction potential index. Based on the results, the distribution of soil classification in Pohang area and the risk of liquefaction under various earthquake accelerations were prepared. As a result of the study, soils in Pohang has the soil characteristics that can cause the site amplification phenomenon. In the analysis through liquefaction hazard maps under earthquake scenarios, it is found that the liquefaction occurred in the area of Heunghae town is more likely to be liquefied than other areas in Pohang. From these results, it is expected that the study on the preparation of liquefaction hazard maps will contribute to the preparation of countermeasures against liquefaction by predicting the possibility in the future.

A B S T R A C T
 1. 서 론
 2. 포항시 액상화 발생 및 피해
 3. 포항지역의 지반특성
 4. Macro 액상화 위험도 작성
  4.1 액상화 위험도 작성방법
  4.2 액상화 가능성 지수계산
 5. 포항시 액상화 위험도 분석
  5.1 N(avg)치 및 지반분류를 통한 비교
  5.2 포항본진 기준
  5.3 시나리오 기준
 6. 결론 및 한계
 REFERENCES

• 백우현(서경대학교 토목건축공학과) | Baek, Woo Hyun
• 최재순(서경대학교 토목건축공학과) | Choi, Jae Soon Corresponding author
• 안재광(기상청 지진화산연구과) | Ahn, Jae-Kwang