King Seong carried out the large-scale construction transferring the capital from Wungjin (Gongju) to Sabi (Buyeo) in 538. But because most of the Buyeo area was the low swamp in the time, it needed above all to form a site before transferring the capital. Until recently, in addition to the scientific excavation, the relief excavations for the construction of new building or the formation of road were conducted on many sites in the Buyeo area. As a result, many remains which were formed on the low swamp including the temple site of Neungsan-ri, Dongna Castle, the remains of Ssangbuk-ri (280-5 Bukpo, Hyeonnaedeul) and the remains of Gua-ri were identified. Also in these remains, the various engineering construction methods irrespective of the nature of remains were used for the purpose of the soft ground reinforcement as follows: mattress method of construction, pile designation, stone alignment, filing of decomposed granite soil, culverts and storage tanks. Especially, the mattress method of construction and the pile designation are thought to be the traditional engineering construction method at least in that they are appeared since the Three Han Sates era. And these soft ground construction methods had an effect on the construction of reservoir in Japan at the time. In the future, the construction method for soft ground reinforcement shall be concerned and studied further in the architecture and the civil engineering as well as the archeology.

1. 서론
2. 부여지역 저습지상의 유적 자료검토
    2-1. 능산리사지
    2-2. 구아리 432번지 유적
    2-3. 쌍북리 280-5번지 유적
    2-4. 쌍북리 173-8․172-5번지 유적
    2-5. 쌍북리 현내들유적
    2-6. 쌍북리 북포유적
    2-7. 동나성
3. 연약지반 개량공법과 특성
    3-1. 부섶시설
    3-2. 말뚝지정
    3-3. 부섶시설과 말뚝지정의 혼축
    3-4. 암거시설
    3-5. 자갈석렬과 마사토 충전
4. 결론
참고문헌
Abstract

• 조원창(한얼문화유산연구원) | Cho, Weon-Chang (Hanul Cultural Heritage Institute) Corresponding author